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Cytokinetics

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FY2023 Annual Report · Cytokinetics
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ANNUAL REPORT 2023

REACHING
NEW HEIGHTS

DEAR SHAREHOLDER,
The seeds of possibility that we planted 
over  25  years  ago  with  the  founding  of 
(cid:38)(cid:92)(cid:87)(cid:82)(cid:78)(cid:76)(cid:81)(cid:72)(cid:87)(cid:76)(cid:70)(cid:86)(cid:3) (cid:75)(cid:68)(cid:89)(cid:72)(cid:3) (cid:81)(cid:82)(cid:90)(cid:3) (cid:565)(cid:82)(cid:88)(cid:85)(cid:76)(cid:86)(cid:75)(cid:72)(cid:71)(cid:3) (cid:76)(cid:81)(cid:87)(cid:82)(cid:3)
towering  giants  of  progress  that  have 
exceeded  even  our  high  aspirations.  In 
2023,  our  company  reached  impressive 
new heights. Today, like the majestic trees 
that lend their names to the clinical trials in 
our development program for (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81), 
(cid:90)(cid:72)(cid:3)(cid:86)(cid:87)(cid:68)(cid:81)(cid:71)(cid:3)(cid:564)(cid:85)(cid:80)(cid:79)(cid:92)(cid:3)(cid:74)(cid:85)(cid:82)(cid:88)(cid:81)(cid:71)(cid:72)(cid:71)(cid:15)(cid:3)(cid:90)(cid:76)(cid:87)(cid:75)(cid:3)(cid:71)(cid:72)(cid:72)(cid:83)(cid:3)(cid:85)(cid:82)(cid:82)(cid:87)(cid:86)(cid:3)(cid:76)(cid:81)(cid:3)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:87)(cid:76)(cid:564)(cid:70)(cid:3)(cid:76)(cid:81)(cid:81)(cid:82)(cid:89)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:15)(cid:3)
and  an  unwavering  mission  and  culture  of  compassionate 
commitment, reaching higher and higher in service to our mission. 

In a year punctuated with positives, most notable among our 
achievements  was  our  sharing  positive  results  from 
SEQUOIA-HCM, the pivotal Phase 3 clinical trial of (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81), our 
cardiac myosin inhibitor, in patients with symptomatic obstructive 
hypertrophic  cardiomyopathy  (HCM).  The  results  surpassed 
already high expectations and represented a transformational 
(cid:76)(cid:81)(cid:565)(cid:72)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:83)(cid:82)(cid:76)(cid:81)(cid:87)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:82)(cid:88)(cid:85)(cid:3)(cid:70)(cid:82)(cid:80)(cid:83)(cid:68)(cid:81)(cid:92)(cid:17)(cid:3)(cid:918)(cid:81)(cid:3)(cid:21)(cid:19)(cid:21)(cid:23)(cid:3)(cid:90)(cid:72)(cid:3)(cid:68)(cid:85)(cid:72)(cid:3)(cid:80)(cid:82)(cid:89)(cid:76)(cid:81)(cid:74)(cid:3)(cid:87)(cid:82)(cid:90)(cid:68)(cid:85)(cid:71)(cid:3)
regulatory submissions in both the U.S. and Europe, and have 
activated our next phase of commercial readiness ahead of the 
potential approval and commercial launch of (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)in 2025.

At  the  same  time,  as  patients  from  SEQUOIA-HCM  enroll  in 
FOREST-HCM,  the  open-label  extension  clinical  study  of 
(cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:15)(cid:3)(cid:90)(cid:72)(cid:3)(cid:70)(cid:82)(cid:81)(cid:87)(cid:76)(cid:81)(cid:88)(cid:72)(cid:3)(cid:87)(cid:82)(cid:3)(cid:70)(cid:82)(cid:79)(cid:79)(cid:72)(cid:70)(cid:87)(cid:3)(cid:72)(cid:89)(cid:76)(cid:71)(cid:72)(cid:81)(cid:70)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:72)(cid:605)(cid:70)(cid:68)(cid:70)(cid:92)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
safety of longer-term treatment with (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:17)(cid:3)(cid:918)(cid:81)(cid:3)(cid:72)(cid:68)(cid:85)(cid:79)(cid:92)(cid:3)(cid:21)(cid:19)(cid:21)(cid:23)(cid:15)(cid:3)
we shared data from FOREST-HCM showing that treatment with 
(cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)resulted in favorable cardiac structural remodeling, 
suggesting that our potential medicine may be able to alter the 
architecture of the heart in patients with obstructive HCM.

Building on SEQUOIA-HCM, last year we expanded the development 
program for (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)with two additional Phase 3 clinical trials: 
MAPLE-HCM, evaluating (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)as monotherapy compared to 
metoprolol as monotherapy in patients with obstructive HCM, and 
ACACIA-HCM,  a  pivotal  trial  evaluating  (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3) in  patients 
with  non-obstructive  HCM.  Each  of  these  clinical  trials  holds 
opportunity for (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)as a next-in-class cardiac myosin inhibitor 
to potentially support additional patient populations with HCM 
potentially underserved by currently available treatment options. 

Alongside progress made with (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)in 2023, we also advanced 
our earlier-stage pipeline. During the year, we started a Phase 1 
study of CK-586, our cardiac myosin inhibitor with a mechanism of 
action distinct from (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81), that we intend to develop for the 
potential treatment of a subgroup of patients with heart failure 
with  preserved  ejection  fraction,  or  HFpEF.  Despite  available 
therapies, patients with HFpEF remain at high risk of cardiovascular

(cid:72)(cid:89)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:68)(cid:85)(cid:72)(cid:3)(cid:76)(cid:81)(cid:3)(cid:81)(cid:72)(cid:72)(cid:71)(cid:3)(cid:82)(cid:73)(cid:3)(cid:81)(cid:72)(cid:90)(cid:3)(cid:87)(cid:75)(cid:72)(cid:85)(cid:68)(cid:83)(cid:76)(cid:72)(cid:86)(cid:17)(cid:3)(cid:918)(cid:81)(cid:3)(cid:21)(cid:19)(cid:21)(cid:23)(cid:15)(cid:3)(cid:90)(cid:72)(cid:3)(cid:72)(cid:91)(cid:83)(cid:72)(cid:70)(cid:87)(cid:3)(cid:87)(cid:82)(cid:3)
complete the Phase 1 study and subsequently share data in the 
second quarter, with the goal of starting a Phase 2 clinical trial of 
CK-586 in patients with HFpEF in the second half of this year.

In 2023, unfortunately, we also experienced setbacks, including 
our receipt of a Complete Response Letter from the U.S. Food & 
Drug  Administration  regarding  our  New  Drug  Application  for 
(cid:82)(cid:80)(cid:72)(cid:70)(cid:68)(cid:80)(cid:87)(cid:76)(cid:89)(cid:3)(cid:80)(cid:72)(cid:70)(cid:68)(cid:85)(cid:69)(cid:76)(cid:79) for the potential treatment of heart failure 
with reduced ejection fraction (HFrEF), as well as the termination 
of development of (cid:85)(cid:72)(cid:79)(cid:71)(cid:72)(cid:86)(cid:72)(cid:80)(cid:87)(cid:76)(cid:89)(cid:3)after COURAGE-ALS, the Phase 3 
clinical trial of (cid:85)(cid:72)(cid:79)(cid:71)(cid:72)(cid:86)(cid:72)(cid:80)(cid:87)(cid:76)(cid:89)(cid:3)in patients with ALS, showed it had no 
(cid:72)(cid:909)(cid:72)(cid:70)(cid:87)(cid:3)(cid:82)(cid:81)(cid:3)(cid:72)(cid:76)(cid:87)(cid:75)(cid:72)(cid:85)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:83)(cid:85)(cid:76)(cid:80)(cid:68)(cid:85)(cid:92)(cid:3)(cid:82)(cid:85)(cid:3)(cid:86)(cid:72)(cid:70)(cid:82)(cid:81)(cid:71)(cid:68)(cid:85)(cid:92)(cid:3)(cid:72)(cid:81)(cid:71)(cid:83)(cid:82)(cid:76)(cid:81)(cid:87)(cid:86)(cid:17)(cid:3)(cid:58)(cid:75)(cid:76)(cid:79)(cid:72)(cid:3)(cid:87)(cid:75)(cid:72)(cid:86)(cid:72)(cid:3)
setbacks were disappointing, inspired by the patients we aim to 
serve, we push forward with learnings in support of our mission.

We also commemorated our 25th anniversary throughout last year. 
We honored our history, spotlighted our longstanding commitment 
(cid:87)(cid:82)(cid:3)(cid:85)(cid:76)(cid:74)(cid:82)(cid:85)(cid:82)(cid:88)(cid:86)(cid:3)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:87)(cid:76)(cid:564)(cid:70)(cid:3)(cid:85)(cid:72)(cid:86)(cid:72)(cid:68)(cid:85)(cid:70)(cid:75)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:85)(cid:72)(cid:565)(cid:72)(cid:70)(cid:87)(cid:72)(cid:71)(cid:3)(cid:82)(cid:81)(cid:3)(cid:82)(cid:88)(cid:85)(cid:3)(cid:68)(cid:70)(cid:75)(cid:76)(cid:72)(cid:89)(cid:72)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)(cid:17)(cid:3)
Just as Ralph Waldo Emerson wrote of “the creation of a thousand 
forests  is  in  one  acorn,”  we  now  look  ahead  to  a  future  for 
Cytokinetics coalesced by our science and guided by our Vision 
2025.  Pivoting on (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)as our most advanced program, we are 
on our way to building an uncommon specialty cardiology company 
that can stand tall amongst other sustaining peer group companies 
(cid:83)(cid:82)(cid:90)(cid:72)(cid:85)(cid:72)(cid:71)(cid:3)(cid:69)(cid:92)(cid:3)(cid:72)(cid:81)(cid:71)(cid:88)(cid:85)(cid:76)(cid:81)(cid:74)(cid:3)(cid:76)(cid:81)(cid:81)(cid:82)(cid:89)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:69)(cid:72)(cid:81)(cid:72)(cid:564)(cid:87)(cid:3)(cid:82)(cid:73)(cid:3)(cid:83)(cid:68)(cid:87)(cid:76)(cid:72)(cid:81)(cid:87)(cid:86)(cid:17)(cid:3)

(cid:49)(cid:82)(cid:90)(cid:15)(cid:3) (cid:76)(cid:81)(cid:3) (cid:21)(cid:19)(cid:21)(cid:23)(cid:15)(cid:3) (cid:90)(cid:72)(cid:3) (cid:68)(cid:85)(cid:72)(cid:3) (cid:90)(cid:72)(cid:79)(cid:79)(cid:3) (cid:83)(cid:82)(cid:86)(cid:76)(cid:87)(cid:76)(cid:82)(cid:81)(cid:72)(cid:71)(cid:3) (cid:87)(cid:82)(cid:3) (cid:72)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:72)(cid:3) (cid:87)(cid:75)(cid:68)(cid:87)(cid:3) (cid:89)(cid:76)(cid:86)(cid:76)(cid:82)(cid:81)(cid:17)(cid:3)
(cid:58)(cid:72)(cid:3)(cid:69)(cid:72)(cid:74)(cid:68)(cid:81)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:92)(cid:72)(cid:68)(cid:85)(cid:3)(cid:82)(cid:81)(cid:3)(cid:86)(cid:87)(cid:85)(cid:82)(cid:81)(cid:74)(cid:3)(cid:564)(cid:81)(cid:68)(cid:81)(cid:70)(cid:76)(cid:68)(cid:79)(cid:3)(cid:73)(cid:82)(cid:82)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:90)(cid:76)(cid:87)(cid:75)(cid:3)(cid:87)(cid:90)(cid:82)(cid:3)(cid:92)(cid:72)(cid:68)(cid:85)(cid:86)(cid:3)(cid:82)(cid:73)(cid:3)
cash runway. As more programs mature from our laboratories 
and into the clinic, we look forward to expanding our pipeline 
beyond the mechanics of muscle contractility to also extend 
to  other  areas  of  muscle  biology,  including  metabolism  and 
energetics of muscle, as may further unlock shareholder value. 

(cid:36)(cid:86)(cid:3)(cid:90)(cid:72)(cid:3)(cid:85)(cid:72)(cid:565)(cid:72)(cid:70)(cid:87)(cid:3)(cid:82)(cid:81)(cid:3)(cid:82)(cid:88)(cid:85)(cid:3)(cid:79)(cid:68)(cid:86)(cid:87)(cid:3)(cid:92)(cid:72)(cid:68)(cid:85)(cid:15)(cid:3)(cid:90)(cid:72)(cid:3)(cid:68)(cid:85)(cid:72)(cid:3)(cid:75)(cid:88)(cid:80)(cid:69)(cid:79)(cid:72)(cid:71)(cid:3)(cid:69)(cid:92)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:85)(cid:72)(cid:80)(cid:68)(cid:85)(cid:78)(cid:68)(cid:69)(cid:79)(cid:72)(cid:3)
resilience that characterizes both our company and the towering 
trees of the forest that shelter and exhilarate us. Our mission is 
(cid:70)(cid:72)(cid:81)(cid:87)(cid:72)(cid:85)(cid:72)(cid:71)(cid:3) (cid:76)(cid:81)(cid:3) (cid:70)(cid:68)(cid:85)(cid:71)(cid:76)(cid:68)(cid:70)(cid:3) (cid:80)(cid:92)(cid:82)(cid:86)(cid:76)(cid:81)(cid:15)(cid:3) (cid:87)(cid:75)(cid:72)(cid:3) (cid:73)(cid:82)(cid:88)(cid:81)(cid:71)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3) (cid:82)(cid:73)(cid:3) (cid:82)(cid:88)(cid:85)(cid:3) (cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:87)(cid:76)(cid:564)(cid:70)(cid:3)
expertise and the engine that powers our muscles. Cytokinetics 
remains  grounded  in  the  integrity  of  science  as  we  continue 
(cid:87)(cid:82)(cid:3)(cid:85)(cid:72)(cid:68)(cid:70)(cid:75)(cid:3)(cid:81)(cid:72)(cid:90)(cid:3)(cid:75)(cid:72)(cid:76)(cid:74)(cid:75)(cid:87)(cid:86)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:83)(cid:68)(cid:87)(cid:76)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:90)(cid:75)(cid:82)(cid:3)(cid:80)(cid:68)(cid:92)(cid:3)(cid:75)(cid:82)(cid:83)(cid:72)(cid:73)(cid:88)(cid:79)(cid:79)(cid:92)(cid:3)(cid:69)(cid:72)(cid:81)(cid:72)(cid:564)(cid:87)(cid:17)

We  look  forward  to  keeping  you  updated  on  our  continued 
progress at Cytokinetics and are indeed grateful for your support. 

Robert I. Blum
(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)

Protein Target

Therapeutic Area

Drug Candidate

Research

Pre-Clinical

Phase 1

Phase 2

Phase 3

Approval

Myosin

oHCM

(cid:36)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)

oHCM
(First-line*)

Myosin-Targeted
Therapy

nHCM

(cid:36)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)

(cid:36)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)

HFpEF

CK-586

HFrEF

(cid:50)(cid:80)(cid:72)(cid:70)(cid:68)(cid:80)(cid:87)(cid:76)(cid:89)
(cid:48)(cid:72)(cid:70)(cid:68)(cid:85)(cid:69)(cid:76)(cid:79)

Troponin

Troponin-
Targeted Therapy

Heart Failure,
other

CK-136

Other Biology

Muscle Biology
Directed

(cid:53)(cid:72)(cid:86)(cid:72)(cid:68)(cid:85)(cid:70)(cid:75)

Preparing for regulatory
submissions in 2H 2024

EMA review pending

(cid:13)(cid:51)(cid:72)(cid:81)(cid:71)(cid:76)(cid:81)(cid:74)(cid:3)(cid:85)(cid:72)(cid:86)(cid:88)(cid:79)(cid:87)(cid:86)(cid:3)(cid:73)(cid:85)(cid:82)(cid:80)(cid:3)(cid:48)(cid:36)(cid:51)(cid:47)(cid:40)(cid:16)(cid:43)(cid:38)(cid:48)(cid:15)(cid:3)(cid:68)(cid:81)(cid:3)(cid:82)(cid:81)(cid:74)(cid:82)(cid:76)(cid:81)(cid:74)(cid:3)(cid:51)(cid:75)(cid:68)(cid:86)(cid:72)(cid:3)(cid:22)(cid:3)(cid:70)(cid:79)(cid:76)(cid:81)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:87)(cid:85)(cid:76)(cid:68)(cid:79)(cid:3)(cid:72)(cid:89)(cid:68)(cid:79)(cid:88)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:83)(cid:82)(cid:87)(cid:72)(cid:81)(cid:87)(cid:76)(cid:68)(cid:79)(cid:3)(cid:86)(cid:88)(cid:83)(cid:72)(cid:85)(cid:76)(cid:82)(cid:85)(cid:76)(cid:87)(cid:92)(cid:3)(cid:82)(cid:73)(cid:3)(cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)(cid:68)(cid:86)(cid:3)(cid:80)(cid:82)(cid:81)(cid:82)(cid:87)(cid:75)(cid:72)(cid:85)(cid:68)(cid:83)(cid:92)(cid:3)(cid:70)(cid:82)(cid:80)(cid:83)(cid:68)(cid:85)(cid:72)(cid:71)(cid:3)(cid:87)(cid:82)(cid:3)(cid:80)(cid:72)(cid:87)(cid:82)(cid:83)(cid:85)(cid:82)(cid:79)(cid:82)(cid:79)(cid:3)(cid:68)(cid:86)(cid:3)(cid:80)(cid:82)(cid:81)(cid:82)(cid:87)(cid:75)(cid:72)(cid:85)(cid:68)(cid:83)(cid:92)(cid:3)(cid:76)(cid:81)(cid:3)(cid:83)(cid:68)(cid:87)(cid:76)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:90)(cid:76)(cid:87)(cid:75)(cid:3)(cid:82)(cid:69)(cid:86)(cid:87)(cid:85)(cid:88)(cid:70)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:43)(cid:38)(cid:48)(cid:17)
(cid:36)(cid:79)(cid:79)(cid:3)(cid:71)(cid:85)(cid:88)(cid:74)(cid:3)(cid:70)(cid:68)(cid:81)(cid:71)(cid:76)(cid:71)(cid:68)(cid:87)(cid:72)(cid:86)(cid:3)(cid:68)(cid:69)(cid:82)(cid:89)(cid:72)(cid:3)(cid:68)(cid:85)(cid:72)(cid:3)(cid:76)(cid:81)(cid:89)(cid:72)(cid:86)(cid:87)(cid:76)(cid:74)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:68)(cid:79)(cid:3)(cid:83)(cid:85)(cid:82)(cid:71)(cid:88)(cid:70)(cid:87)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:68)(cid:85)(cid:72)(cid:3)(cid:81)(cid:82)(cid:87)(cid:3)(cid:68)(cid:83)(cid:83)(cid:85)(cid:82)(cid:89)(cid:72)(cid:71)(cid:3)(cid:68)(cid:86)(cid:3)(cid:86)(cid:68)(cid:73)(cid:72)(cid:3)(cid:82)(cid:85)(cid:3)(cid:72)(cid:909)(cid:72)(cid:70)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:68)(cid:81)(cid:92)(cid:3)(cid:76)(cid:81)(cid:71)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:17)

UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 10-K

(Mark One)
(cid:3) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2023 
or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

From the transition period from      to      
Commission file number: 000-50633

CYTOKINETICS, INCORPORATED

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

350 Oyster Point Boulevard
South San Francisco, CA
(Address of principal executive offices)

94-3291317
(I.R.S. Employer
Identification No.)

94080
(Zip Code)

(650) 624-3000
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Common Stock, $0.001 par value

Trading symbol

CYTK

Name of each exchange on which registered

The Nasdaq Global Select Market

Securities registered pursuant to Section 12(g) of the Act:
None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  (cid:3)    No   ☐ 

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ☐    No  (cid:3)

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 
12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.   Yes  (cid:3)    No  
☐

Indicate by check mark whether the Registrant has submitted electronically Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 

of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  (cid:3)    No  ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth 

company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  (cid:3)    Accelerated filer  ☐

   Non-accelerated filer  ☐

   Smaller reporting company  ☐

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised 

financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.     (cid:3)    

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial 

reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C.7262(b)) by the registered public accounting firm that prepared or issued its audit report. (cid:3)

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the 

correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the 

registrant’s executive o(cid:31)cers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  (cid:3)

The approximate aggregate market value of voting and non-voting common stock held by non-affiliates of the registrant was $2.0 billion as of June 30, 2023.(A) 
(A) Excludes 36.1 million shares of common stock held by directors and executive officers, and any stockholders whose ownership exceeds ten percent of the shares outstanding, at June 30, 2023. 
Exclusion of shares held by any person should not be construed to indicate that such person possesses the power, directly or indirectly, to direct or cause the direction of the management or policies of the 
registrant, or that such person is controlled by or under common control with the registrant. 

As of February 27, 2024, the number of shares outstanding of the Registrant’s common stock, par value $0.001 per share, was 103,004,710 shares. 

Portions of the Registrant’s Proxy Statement for its 2024 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission, no later than 120 days 

after the end of the fiscal year, are incorporated by reference into Part III of this Annual Report on Form 10-K.

DOCUMENTS INCORPORATED BY REFERENCE

 
 
 
 
 
 
 
Table of Contents

CYTOKINETICS, INCORPORATED

FORM 10-K

YEAR ENDED DECEMBER 31, 2023

INDEX

Glossary of Terms ............................................................................................................................................
   Forward Looking Statements Private Securities Litigation Reform Act of 1995 ............................................
Summary of Principal Risk Factors..................................................................................................................

PART I

   Business............................................................................................................................................................
   Risk Factors ......................................................................................................................................................
   Unresolved Staff Comments.............................................................................................................................
Cybersecurity....................................................................................................................................................
   Properties..........................................................................................................................................................
   Legal Proceedings ............................................................................................................................................
   Mine Safety Disclosures...................................................................................................................................

PART II

Market  for  Registrant’s  Common  Equity,  Related  Stockholder  Matters  and  Issuer  Purchases  of  Equity 
Securities ..........................................................................................................................................................
   [Reserved].........................................................................................................................................................
   Management’s Discussion and Analysis of Financial Condition and Results of Operations ..........................
   Quantitative and Qualitative Disclosures About Market Risk .........................................................................
   Financial Statements and Supplementary Data ................................................................................................
   Changes in and Disagreements with Accountants on Accounting and Financial Disclosure ..........................
   Controls and Procedures...................................................................................................................................
   Other Information.............................................................................................................................................
Disclosure Regarding Foreign Jurisdictions that Prevent Inspections .............................................................

PART III

   Directors, Executive Officers and Corporate Governance ...............................................................................
   Executive Compensation ..................................................................................................................................
   Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ........
   Certain Relationships and Related Transactions, and Director Independence.................................................
   Principal Accountant Fees and Services...........................................................................................................

Item 1.
Item 1A.
Item 1B.
Item 1C.
Item 2.
Item 3.
Item 4.

Item 5.

Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.
Item 9C.

Item 10.
Item 11.
Item 12.
Item 13.
Item 14.

Item 15.
   Exhibits and Financial Statement Schedules....................................................................................................
Exhibits ........................................................................................................................................................................................
   Form 10-K Summary........................................................................................................................................
Item 16.
Signatures.....................................................................................................................................................................................

PART IV

Page

3
7  
9

11  
30  
60  
60
62  
62  
62  

63  
64  
65  
74  
75
106  
106  
108  
108

109  
109  
109  
109  
109  

110  
110
114  
115  

 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

GLOSSARY OF TERMS

Unless  the  context  requires  otherwise,  references  to  “Cytokinetics,”  “the  Company,”  “we,”  “us”  or  “our”  in  this  Form  10-K
(defined below) refer to Cytokinetics, Incorporated and its subsidiaries. References to “Notes” in this Form 10-K are to the Notes to the 
Consolidated Financial Statements in this Form 10-K. We also have used other specific terms in this Form 10-K, most of which are 
explained or defined below:

Term/Abbreviation 

Definition

2004 Plan 

2020 RTW Transactions 

2021 RTW Transactions 

2022 RPI Transactions 

2026 Notes 

2027 Indenture 

2027 Notes 

ACA 

ACACIA-HCM 

ACC 

AHA 

ALS 

ALSFRS-R 

Amended ATM Facility 
Amgen Agreement 

ARR 

Astellas Agreement 

Astellas FSRA Agreement 

Astellas OSSA Agreement 

ASU 2020-06 

cGMP 

Cantor 
China 

CMC 

CMO 

Cytokinetics’ Amended and Restated 2004 Equity Incentive Plan

The transactions contemplated by the RTW Royalty Purchase Agreement, Ji Xing 
Aficamten License Agreement and the Common Stock Purchase Agreements, dated
July 14, 2020, by and between Cytokinetics and the RTW Investors

The transactions contemplated by the Ji Xing OM License Agreement and the
Common Stock Purchase Agreements, dated December 20, 2021 by and between 
Cytokinetics and the RTW Investors

The transactions contemplated by the RP Loan Agreement and the RP Aficamten
RPA
Cytokinetics’ 4% convertible senior notes due 2026

Indenture Agreement, dated July 6, 2022, between Cytokinetics and U.S. Bank Trust
Company, as trustee
Cytokinetics’ 3.50% convertible senior notes due 2027

Patient Protection and Affordable Care Act, as amended by the Health Care and
Education Reconciliation Act
Assessment Comparing Aficamten to Placebo on Cardiac Endpoints In Adults with
Non-Obstructive HCM
American College of Cardiology

American Heart Association

amyotrophic lateral sclerosis (also known as Lou Gehrig’s Disease)

ALS Functional Rating Scale – Revised

amended and restated Controlled Equity Offering Sales Agreement
Collaboration and Option Agreement, dated December 29, 2006, as amended,
between Cytokinetics and Amgen 

absolute risk reductions

License and Collaboration Agreement, dated June 21, 2013, between Cytokinetics and
Astellas
Fast Skeletal Regulatory Activator Agreement, dated April 23, 2020 between
Cytokinetics and Astellas
License and Collaboration Agreement for Other Skeletal Sarcomere Activators, dated
April 23, 2020, as amended, between Cytokinetics and Astellas
ASU 2020-06, Debt-Debt with Conversion and Other Options (Subtopic 470-20) and
Derivatives and Hedging-Contracts in Entity’s Own Equity (Subtopic 815-40): 
Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity

current Good Manufacturing Practice

Cantor Fitzgerald & Co.
People's Republic of China (including the Hong Kong and Macau SARs)

Chemistry, Manufacturing and Controls

Contract Manufacturing Organizations

Common Stock 
Compensation Committee 

Convertible Notes 

COURAGE-ALS 

our common stock, par value $0.001 per share
Compensation and Talent Committee of Cytokinetics’ Board of Directors 

2026 Notes and 2027 Notes

Clinical Outcomes Using Reldesemtiv on ALSFRS-R in a Global Evaluation in ALS

3

Table of Contents

CPET 

CRL 

CRO 

CV 

E.U. or EU 

EEA 

EMA 

ESPP 

Exchange Act 

FDA 

Final Payment Amount 

FOREST-HCM 

FSRA 

FSTA 

Fundamental Change 

GAAP 

GALACTIC-HF 

GCP 

GDPR 

HCM 

HFpEF 
HFrEF 

HFSA 

HHS 

HIPAA 

ICER 

IND 

IRA 

IRB 

Ji Xing 

Ji Xing Aficamten License Agreement 

Ji Xing Agreements 

Ji Xing OM License Agreement 

KCCQ 

KCCQ-OSS 

Lenders 

LVEF 

LVOT 

LVOT-G 

cardiopulmonary exercise testing

Complete Response Letter

Contract Research Organization

cardiovascular

European Union

European Economic Area

European Medicines Agency

employee stock purchase plan

Securities Exchange Act of 1934, as amended

U.S. Food and Drug Administration

As  defined  in  Part  II,  Item  7  (Management’s  Discussion  and  Analysis  of  Financial 
Conditions and Results of Operations) of this Annual Report on Form 10-K – Sources 
and Uses of Cash, Royalty Pharma Transactions

Five-Year, Open-Label, Research Evaluation of Sustained Treatment with Aficamten
in HCM
fast skeletal regulatory activator

fast skeletal muscle troponin activator

As defined in the 2027 Indenture

Generally Accepted Accounting Principles in the U.S.

Global Approach to Lowering Adverse Cardiac Outcomes Through Improving
Contractility in Heart Failure 
Good Clinical Practice

General Data Protection Regulation ((EU) 2016/679)

hypertrophic cardiomyopathy

heart failure with preserved ejection fraction
heart failure with reduced ejection fraction

Heart Failure Society of America

U.S. Department of Health and Human Services

The federal Health Insurance Portability and Accountability Act of 1996, as amended
by the Health Information Technology for Economic and Clinical Health Act 
Institute for Clinical and Economic Review

Investigational New Drug

Inflation Reduction Act of 2022

Institutional Review Board

Ji Xing Pharmaceuticals Limited and/or its affiliates, including Ji Xing
Pharmaceuticals Hong Kong Limited
License and Collaboration Agreement, dated July 14, 2020, by and between
Cytokinetics and Ji Xing Pharmaceuticals Limited
Ji Xing Aficamten License Agreement and Ji Xing OM License Agreement

License and Collaboration Agreement, dated December 20, 2021, by and between
Cytokinetics and Ji Xing Pharmaceuticals Limited 
Kansas City Cardiomyopathy Questionnaire

KCCQ Overall Summary Score

Silicon Valley Bank and Oxford Finance LLC

left ventricular ejection fraction

left ventricular outflow tract

left ventricular outflow tract gradient

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Table of Contents

MAA 

MAPLE-HCM 

Mavacamten Royalty 

NDA 

nHCM 

NOLs 

NYHA 

oHCM 

OLE 

Ownership Change 

Oxford 

Oyster Point Lease 

Partial Redemption Limitation 

PSU 

Radnor Lease 

REDWOOD-HCM 

REDWOOD-HCM OLE 

REMS 

RP Aficamten RPA 

RP Loan Agreement 

RP OM Liability 

RP OM RPA 

RPDF 

RPFT 

RPI ICAV 

RSU 

RTW ICAV 

RTW Investors 

RTW Royalty Holdings 

RTW Royalty Purchase Agreement 

Section 382 

Marketing Authorization Application

Metoprolol vs Aficamten in Patients with LVOT Obstruction on Exercise Endpoints
Capacity in HCM

certain payments on the net sales of products containing the compound mavacamten
pursuant to the Research Collaboration Agreement, dated August 24, 2012, between 
Cytokinetics and MyoKardia, Inc.

New Drug Application

non-obstructive HCM

net operating loss carryforward

New York Heart Association

obstructive HCM

Open-Label Extension

As  defined  in  Part  1,  Item  1A  (Risk  Factors)  of  this  Annual  Report  on  Form  10-K,
Financial Risks 
Oxford Finance LLC

Lease, dated July 24, 2019, by and between Cytokinetics and KR Oyster Point 1,
LLC, as amended
As defined in the 2027 Indenture

Performance Stock Unit

As defined in Part II, Item 8 (Financial Statements and Supplementary Data), Notes to
Consolidated  Financial  Statements  of  this  Annual  Report  on  Form  10-K  -  Note  9 
(Commitments and Contingencies) – Operating Leases

Randomized Evaluation of Dosing With CK-274 in Obstructive Outflow Disease in
HCM
Randomized Evaluation of Dosing With CK-274 in Obstructive Outflow Disease in
HCM Open Label Extension
Risk Evaluation and Mitigation Strategy

Revenue Participation Right Purchase Agreement, dated January 7, 2022, by and
between Cytokinetics and Royalty Pharma Investments 2019 ICAV
Development Funding Loan Agreement, dated January 7, 2022, by and among
Royalty Pharma Development Funding, LLC and Cytokinetics
As defined in Part II, Item 8 (Financial Statements and Supplementary Data), Notes to
Consolidated  Financial  Statements  of  this  Annual  Report  on  Form  10-K  -  Note  6 
(Agreements with Royalty Pharma) – 2017 RP Omecamtiv Mecarbil Royalty Purchase 
Agreement

Royalty Purchase Agreement, dated February 1, 2017, by and between the
Cytokinetics and RPI Finance Trust, as amended by Amendment No. 1, dated January 
7, 2022
Royalty Pharma Development Funding, LLC

RPI Finance Trust

Royalty Pharma Investments 2019 ICAV

Restricted Stock Unit

RTW Investments ICAV for RTW Fund 1

RTW Master Fund, Ltd., RTW Innovation Master Fund, Ltd. and RTW Venture Fund
Limited
RTW Royalty Holdings Designated Activity Company

Royalty Purchase Agreement, dated July 14, 2020, between Cytokinetics and RTW
Royalty Holdings
Section 382 of the Internal Revenue Code

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Table of Contents

Securities Act

SEQUOIA-HCM

SGLT2

SMA

SPA

Tax Act

Term Loan Agreement

U.S. or US

Securities Act of 1933, as amended

Safety, Efficacy, and Quantitative Understanding of Obstruction Impact of Aficamten 
in HCM
sodium-glucose cotransporter-2

spinal muscular atrophy

Special Protocol Assessment 

Tax Cuts and Jobs Act

Loan and Security Agreement, dated as of October 19, 2015, by and among 
Cytokinetics, Oxford Finance LLC and Silicon Valley Bank and Loan and Security 
Agreement, dated as of May 17, 2019, by and among Cytokinetics, Oxford Finance 
LLC and Silicon Valley Bank
United States

This Form 10-K includes discussion of certain clinical studies relating to various in-line products and/or product candidates. 
These studies typically are part of a larger body of clinical data relating to such products or product candidates, and the discussion herein 
should be considered in the context of the larger body of data. In addition, clinical trial data are subject to differing interpretations, and, 
even when we view data as sufficient to support the safety and/or effectiveness of a product candidate or a new indication for an in-line 
product, regulatory authorities may not share our views and may require additional data or may deny approval altogether.

CYTOKINETICS and our C-shaped logo are registered trademarks of Cytokinetics in the U.S. and certain other countries. 

Other service marks, trademarks and trade names referred to in this report are the property of their respective owners.

The information contained on our website, our Facebook, Instagram, YouTube and LinkedIn pages or our Twitter accounts, or 

any third-party website, is not incorporated by reference into this Form 10-K.

6

Table of Contents

FORWARD LOOKING STATEMENTS
PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

This  report  contains  forward-looking  statements  indicating  expectations  about  future  performance  and  other  forward-looking 
statements  within  the  meaning  of  Section  27A  of  the  Securities  Act,  Section  21E  of  the  Exchange  Act,  and  the  Private  Securities 
Litigation Reform Act of 1995, that involve risks and uncertainties. We intend that such statements be protected by the safe harbor 
created thereby. Forward-looking statements involve risks and uncertainties and our actual results and the timing of events may differ 
significantly from the results discussed in the forward-looking statements. Examples of such forward-looking statements include, but 
are not limited to, statements about or relating to:

•

•

•

•

•

•

•

•

•

•

•

•

•

the timing of submissions and potential approvals of marketing authorization applications to FDA, EMA and other foreign 
regulatory authorities;

the initiation, design, conduct, enrollment, progress, timing and scope of clinical trials and development activities for our 
drug candidates conducted by ourselves or our partners, including the anticipated timing for completion and announcement 
of results of our clinical trials, and anticipated rates of enrollment for clinical trials;

guidance concerning revenues and net cash use for 2024;

the sufficiency of existing resources to fund our operations for at least the next 12 months;

our capital requirements and needs for additional financing;

the results from the clinical trials, the non-clinical studies and chemistry, manufacturing, and controls activities of our drug 
candidates and other compounds, and the significance and utility of such results; anticipated interactions with regulatory 
authorities;

our ability to ensure commercial availability of an antibody-based immunoassay for the dose optimization of omecamtiv 
mecarbil;

our and our partners’ plans or ability to conduct the continued research and development of our drug candidates and other 
compounds;

our  expected  roles  in  research,  development  or  commercialization  under  our  strategic  alliances  with  our  partners  and 
collaborators;

the properties and potential benefits of, and the potential market opportunities for, our drug candidates and other compounds, 
including the potential indications for which they may be developed or commercialized;

the sufficiency of the clinical trials conducted with our drug candidates to demonstrate that they are safe and efficacious;

our receipt of milestone payments, royalties, reimbursements and other funds from current or future partners under strategic 
alliances;

our ability to continue to identify additional potential drug candidates that may be suitable for clinical development;

• market acceptance and commercial viability of our drugs;

•

•

•

•

•

•

•

•

•

changes in third party healthcare coverage and reimbursement policies;

our plans or ability to commercialize drugs, with or without a partner, including our intention to develop sales and marketing 
capabilities and execute on commercial plans;

the focus, scope and size of our research and development activities and programs;

the utility of our focus on the biology of muscle function, and our ability to leverage our experience in muscle contractility 
to the research and development of drug candidates directed to other areas of muscle biology and muscle functions;

our ability to protect our intellectual property and to avoid infringing the intellectual property rights of others;

future payments and other obligations under loan, lease, and revenue interest agreements and the Convertible Notes;

potential competitors and competitive products;

retaining key personnel and recruiting additional key personnel; and

the potential impact of recent accounting pronouncements on our financial position or results of operations.

7

Table of Contents

Such forward-looking statements involve risks and uncertainties, including, but not limited to:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

decisions by Ji Xing with respect to the timing, design and conduct of development and commercialization activities for 
aficamten or omecamtiv mecarbil in China and Taiwan;

our ability to meet any of the conditions for disbursement and our receipt of any loan disbursements under the RP Loan 
Agreement; 

our ability to enroll patients in our clinical trials by any particular date;

our ability to complete our clinical trials by any particular date;

our ability to enter into strategic partnership agreements for any of our programs on acceptable terms and conditions or in 
accordance with our planned timelines;

our ability to obtain additional financing on acceptable terms, if at all;

our receipt of funds and access to other resources under our current or future strategic alliances, in the development, testing, 
manufacturing or commercialization of our drug candidates or slower than anticipated patient enrollment, in our or partners’ 
clinical trials, or in the manufacture and supply of clinical trial materials;

failure by our contract research organizations, contract manufacturing organizations and other vendors to properly fulfill 
their obligations or otherwise perform as expected;

results from non-clinical studies that may adversely impact the timing or the further development or regulatory approvals of 
our drug candidates and other compounds;

the possibility the FDA or foreign regulatory agencies may delay or limit our or our partners’ ability to conduct clinical trials 
or may delay or withhold approvals for the manufacture and sale of our drug candidates;

changing  standards  of  care  and  the  introduction  of  products  by  competitors  or  alternative  therapies  for  the  treatment  of 
indications we target that may limit the commercial potential of our drug candidates;

difficulties or delays in achieving market access, reimbursement and favorable drug pricing for our products and the potential 
impacts of health care reform;

changes in laws and regulations applicable to drug development, commercialization, pricing or reimbursement;

the uncertainty of protection for our intellectual property, whether in the form of patents, trade secrets or otherwise;

potential infringement or misuse by us of the intellectual property rights of third parties;

activities and decisions of, and market conditions affecting, current and future strategic partners;

accrual  information  provided  by  and  performance  of  our  contract  research  organizations,  contract  manufacturing 
organizations, and other vendors;

potential ownership changes under Internal Revenue Code Section 382; and

the timeliness and accuracy of information filed with the U.S. Securities and Exchange Commission by third parties.

In addition, such statements are subject to the risks and uncertainties discussed in the “Risk Factors” section and elsewhere in 
this document. Such statements speak only as of the date on which they are made, and, except as required by law, we undertake no 
obligation to update any forward-looking statement to reflect events or circumstances after the date on which the statement is made or 
to reflect the occurrence of unanticipated events. New factors emerge from time to time, and it is not possible for us to predict which 
factors will arise. In addition, we cannot assess the impact of each factor on our business or the extent to which any factor, or combination 
of factors, may cause actual results to differ materially from those contained in any forward-looking statements.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These 
statements are based upon information available to us as of the date of this Annual Report on Form 10-K, and while we believe such 
information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not 
be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These 
statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.

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SUMMARY OF PRINCIPAL RISK FACTORS

Risks Specific to our Research and Development Activities

•

The regulatory approval and marketing authorization process is expensive, time-consuming and uncertain and may prevent 
our partners or us from obtaining approvals to commercialize some or all of our drug candidates, including aficamten and 
omecamtiv mecarbil.

• We  received  a  CRL  from  FDA  in  response  to  our  NDA  for  omecamtiv  mecarbil.  The  CRL  stated  that  results  from  an 
additional clinical trial of omecamtiv mecarbil are required to establish substantial evidence of effectiveness for the treatment 
of  HFrEF,  with  benefits  that  outweigh  the  risks.  No  assurance  can  be  given  that  we  will  be  able  to  address  any  of  the 
deficiencies noted in the CRL and/or obtain FDA approval of our NDA for omecamtiv mecarbil.

•

Clinical  trials  may  fail  to  demonstrate  the  desired  safety  and  efficacy  of  our  drug  candidates  which  could  prevent  or 
significantly delay completion of clinical development and regulatory approval.

• Our clinical trials, including FOREST-HCM, MAPLE-HCM and ACACIA-HCM, are expensive, time-consuming and may 

be subject to delay.

•

•

If we encounter difficulties enrolling patients in our clinical trials, including FOREST-HCM, MAPLE-HCM and ACACIA-
HCM, our clinical development activities in relation to aficamten and our other drug candidates could be delayed or otherwise 
adversely affected.

The  failure  to  successfully  develop,  manufacture  and  obtain  regulatory  clearance  or  approval  of  an  antibody-based 
immunoassay for blood concentrations of omecamtiv mecarbil by Microgenics Corporation, a subsidiary of Thermo Fisher, 
could harm our development and commercialization strategy for omecamtiv mecarbil in key markets. In addition, if required 
by regulatory authorities as part of any approved label for omecamtiv mecarbil, we will be dependent on Microgenics to 
manufacture and commercialize such an immunoassay in sufficient quantities in all key markets in which we may seek to 
commercialize omecamtiv mecarbil.

• We depend on CROs to conduct our clinical trials as well as other third parties to manufacture drug candidates for use in 
clinical trial and we have limited control over their performance. If these CROs do not successfully carry out their contractual 
duties or meet expected deadlines, or if we lose any of our CROs, we may not be able to obtain regulatory approval for or 
commercialize our product candidates on a timely basis, if at all.

Risks Specific to our Commercial Operations

•

If we or our partners receive regulatory approval for our drug candidates, we or they will be subject to ongoing obligations 
to  and  continued  regulatory  review  by  the  FDA  and  foreign  regulatory  agencies,  and  may  be  subject  to  additional  post-
marketing obligations such as an ETASU or other form of REMS, all of which may result in significant expense and limit 
commercialization of our potential drugs.

• Our competitors may develop drugs that are less expensive, safer and/or more effective than ours, which may diminish or 

eliminate the commercial success of any drugs that we may commercialize.

•

•

Even  if  our  drug  candidates  are  approved,  we  may  experience  difficulties  or  delays  in  achieving  market  access, 
reimbursement and favorable drug pricing for our drug products.

The  commercial  success  of  our  products  depends  on  the  availability  and  sufficiency  of  third  party  payor  coverage  and 
reimbursement.

• We  have  no  manufacturing  capabilities  and  depend  on  contract  manufacturers  to  produce  our  clinical  trial  materials, 
including  our  drug  candidates,  and  will  have  continued  reliance  on  contract  manufacturers  for  the  development  and 
commercialization of our potential drugs.

• We may not be able to successfully manufacture our drug candidates in sufficient quality and quantity, which would delay 

or prevent us from developing our drug candidates and commercializing approved drug products, if any.

•

•

If we or our partners receive regulatory approval for our drug candidates, we or they will be subject to ongoing obligations 
to  and  continued  regulatory  review  by  the  FDA  and  foreign  regulatory  agencies,  and  may  be  subject  to  additional  post-
marketing obligations, all of which may result in significant expense and limit commercialization of our potential drugs.

If physicians and patients do not accept our drugs, we may be unable to generate significant revenue, if any.

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Risks Specific to our Intellectual Property

• Our success depends substantially upon our ability to obtain and maintain intellectual property protection relating to our drug 

candidates, compounds and research technologies.

•

•

If we are unable to protect the confidentiality of our trade secrets, the value of our technology could be materially adversely 
affected and our business would be harmed.

If we are sued for infringing third-party intellectual property rights, it will be costly and time-consuming, and an unfavorable 
outcome could have a significant adverse effect on our business.

• We may undertake infringement or other legal proceedings against third parties, causing us to spend substantial resources on 

litigation and exposing our own intellectual property portfolio to challenge.

• We may become involved in disputes with our strategic partners over intellectual property ownership, and publications by 
our  research  collaborators  and  clinical  investigators  could  impair  our  ability  to  obtain  patent  protection  or  protect  our 
proprietary information, either of which would have a significant impact on our business.

• We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed 
confidential information of third parties or that we or our employees have wrongfully used or disclosed trade secrets of their 
former employers.

Financial Risks

• We have a history of significant losses and may not achieve or sustain profitability and, as a result, you may lose part or all 

of your investment.

• We will need substantial additional capital in the future to sufficiently fund and maintain our operations.

• We have never generated, and may never generate, revenues from commercial sales of our drugs, and we may not have drugs 

to commercialize for at least several years, if ever.

• We may not be entitled to obtain additional loan disbursements under the RP Loan Agreement.

• Our indebtedness and liabilities could limit the cash flow available for our operations, expose us to risks that could adversely 
affect our business, financial condition and results of operations and impair our ability to satisfy our obligations under the 
2026 Notes, the 2027 Notes and the RP Loan Agreement.

Legal and Compliance Risks

•

Recently  enacted  laws,  including  the  Inflation  Reduction  Act,  or  IRA,  and  potential  future  legislation  may  increase  the 
difficulty and cost for us to obtain regulatory approval of, and to commercialize our products and affect the prices we may 
obtain upon commercialization.

• Our relationships with customers, healthcare providers, clinical trial sites and professionals and third-party payors will be 
subject to applicable anti-kickback, fraud and abuse and other laws and regulations. If we fail to comply with federal, state 
and foreign laws and regulations, including healthcare, privacy and data security laws and regulations, we could face criminal 
sanctions, civil penalties, contractual damages, reputational harm and diminished profits and future earnings.

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ITEM 1. BUSINESS

Overview

PART I

We are a late-stage biopharmaceutical company focused on discovering, developing and commercializing first-in-class muscle 
activators  and  next-in-class  muscle  inhibitors  as  potential  treatments  for  debilitating  diseases  in  which  muscle  performance  is 
compromised and/or declining. We have discovered and are developing muscle-directed investigational medicines that may potentially 
improve  the  health  span  of  people  with  devastating  cardiovascular  and  neuromuscular  diseases  of  impaired  muscle  function.  Our 
research and development activities relating to the biology of muscle function have evolved from our knowledge and expertise regarding 
the  cytoskeleton,  a  complex  biological  infrastructure  that  plays  a  fundamental  role  within  every  human  cell.  As  a  leader  in  muscle 
biology and the mechanics of muscle performance, we are developing small molecule drug candidates specifically engineered to impact 
muscle function and contractility. 

Our research continues to drive innovation and leadership in muscle biology. All of our drug candidates have arisen from our 
cytoskeletal research activities. Our focus on the biology of the cytoskeleton distinguishes us from other biopharmaceutical companies, 
and  potentially  positions  us  to  discover  and  develop  novel  therapeutics  that  may  be  useful  for  the  treatment  of  severe  diseases  and 
medical conditions. Each of our drug candidates represents a first or next in class molecule compared to currently marketed drugs, which 
we believe validates our focus on the cytoskeleton as a productive area for drug discovery and development. We intend to leverage our 
experience in muscle contractility to expand our current pipeline and expect to identify additional potential drug candidates that may be 
suitable for clinical development. 

Corporate Strategy 

As a leader in muscle biology and the mechanics of muscle performance, we are developing small molecule drug candidates 
specifically engineered to impact muscle function and contractility. Our goal is to discover, develop and commercialize novel drug 
products  that  modulate  muscle  function  to  improve  patient  health  span,  with  the  intent  of  establishing  a  fully-integrated 
biopharmaceutical company. 

In 2020, we articulated our five-year strategic plan, Vision 2025: “Leading with Science, Delivering for Patients,” designed to 
enable Cytokinetics to become the leading muscle biology biopharmaceutical company that meaningfully improves the lives of patients 
with diseases of impaired muscle function through access to novel medicines arising from our research.

The key components of our five-year Corporate Strategy are: 

•

•

Achieve regulatory approvals for drugs arising from our pipeline. We are committed to fueling a diverse and expansive 
pipeline of muscle-directed drug candidates advancing toward regulatory approvals. As we advance our drug candidates into 
later-stage clinical development, we extensively evaluate previous clinical trial designs and results to assess key learnings 
that may be applied to our late-stage clinical development activities. We believe this may result in more successful later-
stage clinical development activities that may increase the likelihood of achieving regulatory successes and deliver effective 
therapies to patients that can address the needs of people living with devastating diseases of muscle impairment. Pursuing a 
broad-based clinical development strategy may afford us the opportunity to not be reliant on the outcome of a singular clinical 
program or clinical trial result, thereby potentially mitigating the risk of clinical development and regulatory hurdles.  

Build commercial capabilities to market and sell our medicines reflective of their innovation and value. With a focus on 
disease areas for which there are serious unmet medical needs, we direct our activities to potential commercial opportunities 
in  concentrated  and  tractable  customer  segments,  such  as  hospital  specialists  and  disease-specific  centers  of  excellence, 
which  may  be  addressed  by  smaller,  targeted  sales  forces.  In  preparing  for  the  potential  commercialization  of  our  drug 
candidates directed to these markets, we are focusing our activities on the key issues facing, physicians, patients and payors, 
including the principal drivers of clinical and economic burdens associated with these diseases. We have established alliances 
and collaborations with leading academic institutions and professional societies to analyze clinical and claims data to better 
understand the real-world burden of disease from a clinical and economic standpoint. We believe this approach may inform 
the value proposition that our potential first-in-class and next-in-class therapies may offer to various stakeholders within the 
healthcare ecosystem. Targeting unmet medical needs may provide us competitive advantages and support our development 
of a franchise in diseases involving muscle function. In the markets for our potential therapies, we believe that a company 
with limited resources may be able to compete effectively against larger, more established companies with greater financial 
and commercial resources. For these opportunities, we intend to build sales and marketing capabilities in North America and 
potentially in Europe with the goal of becoming a fully-integrated biopharmaceutical company. 

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• Generate  sustainable  and  growing  revenues  from  product  sales.  As  we  move  toward  becoming  a  fully  integrated 
biopharmaceutical company, we expect to evolve our corporate development strategies to raise capital through a combination 
of  strategic  partnerships  and  equity  capital  financings  to  one  that  is  sustained  from  product  generated  revenues  that  are 
expected to grow over time. Through prudent investment spending fueled by commercial returns alongside other potential 
strategic  partnerships  and  structured  finance  and  royalty  monetization  deals,  we  seek  to  provide  investor  returns  while 
continuing to conduct proprietary research to support future research, development and commercial programs. Additionally, 
we strive to ensure sustainable growth of product sales and long-term profitability through lifecycle management strategies.

•

•

•

Expand  our  development  pipeline.  We  believe  that  our  extensive  understanding  of  muscle  biology  and  our  proprietary 
research activities should enable us to discover and potentially to develop additional muscle directed drug candidates with 
novel mechanisms of action that may offer potential benefits not provided by existing drugs and which may have application 
across a broad array of diseases and medical conditions. Progressing related programs in parallel may afford us an opportunity 
to  build  a  broader  business  that  could  benefit  from  multiple  products  that  serve  related  clinical  and  commercial  needs 
associated with impaired muscle function, muscle weakness and fatigue. In addition, this strategy may enable us to diversify 
certain technical, financial and operating risks by advancing several drug candidates in parallel.  

Expand our discovery platform to muscle energetics, growth and metabolism. We expect that we may be able to leverage 
our expertise in muscle contractility to expand muscle biology research programs related to other areas of muscle function 
and which may extend to the potential treatment of other serious, yet adjacent, diseases and conditions. As most muscle-
related diseases are accompanied by defects in metabolism or mitochondrial function, we also anticipate that treatments that 
modulate  contractility  could  be  additive  with  therapeutics  that  boost  metabolic  capacity.  We  can  augment  our  industry-
leading expertise in muscle contractility by building similar expertise in mitochondrial biology and technologies. Strategies 
toward enhancing our discovery platform into muscle energetics, regeneration and metabolism include building human and 
capital  resources  for  mitochondrial  and  metabolism  research  capabilities,  expanding  strategic  academic  partnerships, 
engaging the mitochondrial research community, engaging the mitochondrial disease advocacy community, and evaluating 
therapeutic and technology platforms for potential in-licensing.

Be the science-driven company people want to join and partner with. We build our science around patients and their families 
through authentic and ongoing engagement and are committed to transforming patients’ lives through our activities. Our goal 
is to provide employees with an opportunity to contribute to something bigger than any one of the individuals at the company. 
We  believe  that  a  commitment  to  a  diverse,  inclusive  and  respectful  culture  goes  beyond  what  is  “right”  to  do;  it  is 
foundational  to  building  a  successful,  creative,  and  science  driven  company,  and  essential  to  develop  a  community  of 
colleagues who are impassioned by our purpose to improve the lives of patients. As a patient-centric organization, we rely 
on an approach where clinical outcomes, patient experiences and patients’ goals for care intersect. We value our partnerships 
with industry, professional societies, advocacy organizations, vendors and academic institutions and aim to solicit ongoing 
feedback to ensure interests are aligned and collaborations are successful.

Building a Specialty Cardiology Franchise

We believe that we are well positioned to build a specialty cardiology business franchise anchored by our late-stage development 
program for aficamten, complemented by earlier stage drug candidates that have arisen from our industry leading research and leadership 
in muscle biology and the mechanics of contractility. We anticipate that aficamten, the first product in our potential franchise opportunity 
will  help  serve  unmet  needs  in  the  growing  hypertrophic  cardiomyopathy  market.    If  aficamten  is  approved  and  indicated  for  the 
treatment of patients with  oHCM (based upon the positive results of SEQUOIA-HCM, and assuming positive results from MAPLE-
HCM), it could be followed by a subsequent approval and indication for the treatment of patients with HCM (assuming positive results 
from    ACACIA-HCM).  We  further  believe  that  our  pioneering  leadership  and  research  activities  directed  to  the  same  biology  and 
emerging pharmacology could result in an expansion of our business franchise with the development and potential approval of CK-586 
for the potential treatment of a subset of patients with HFpEF whose hypercontractility resembles that of patients with nHCM. 

Our commercial business franchise is focused to the advancement of potential medicines that may address high unmet needs of 
patients primarily treated by a concentrated segment of cardiologists. Our focus is in contrast to other biopharmaceutical companies 
focused  to  cardiology,  but  whose  potential  medicines  may  be  targeted  to  a  greater  number,  and  more  diffuse  geographical  base  of, 
primary care physicians.  Specifically, HCM is primarily diagnosed with initiation of treatment by approximately 10,000 cardiologists 
in the U.S., including in centers of excellence and targeted community hospitals.  We aim to achieve similar if not higher return on 
investments relative to comparable biopharmaceutical companies with a relatively limited sales and marketing infrastructure focused to 
key prescribers and with a specialty distribution model. We aim to achieve commercial returns from our franchise business strategies as 
would be enabled by experienced sales representatives who bring established rapport with their potential customers and appropriately 
couple their selling activities with high touch customer support services designed to benefit prescribers and patients alike.

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Research and Development Programs

Our long-standing interest in the cytoskeleton has led us to focus our research and development activities on the biology of muscle 
function and, in particular, small molecule modulation of muscle contractility. We believe that our expertise in the modulation of muscle 
contractility  is  an  important  differentiator  for  us.  Our  preclinical  and  clinical  experience  in  muscle  contractility  may  position  us  to 
discover and develop additional novel therapies that have the potential to improve the health of patients with severe and debilitating 
diseases or medical conditions.

Small  molecules  that  affect  muscle  contractility  may  have  several  applications  for  a  variety  of  serious  diseases  and  medical 
conditions. For example, heart failure is a disease often characterized by impaired cardiac muscle contractility which may be treated by 
modulating the contractility of cardiac muscle. Similarly, certain diseases and medical conditions associated with muscle weakness may 
be amenable to treatment by enhancing the contractility of skeletal muscle. Because the modulation of the contractility of different types 
of muscle, such as cardiac and skeletal muscle, may be relevant to multiple diseases or medical conditions, we believe we can leverage 
our expertise in these areas to more efficiently discover and develop potential drug candidates that modulate the applicable muscle type 
for multiple indications.

We segment our research and development activities related to muscle contractility by our cardiac muscle contractility program 
and our skeletal muscle contractility program. We also conduct research and development on novel treatments for disorders involving 
muscle function beyond muscle contractility.

Our research and development expenses were $330.1 million for 2023, $240.8 million for 2022, and $159.9 million for 2021.

Cardiac Muscle Program

Our cardiac muscle contractility program is focused on the cardiac sarcomere, the basic unit of muscle contraction in the heart. 
The cardiac sarcomere is a highly ordered cytoskeletal structure composed of cardiac myosin, actin and a set of regulatory proteins. 
Cardiac myosin is the cytoskeletal motor protein in the cardiac muscle cell. It is directly responsible for converting chemical energy into 
the  mechanical  force,  resulting  in  cardiac  muscle  contraction.  Our  most  advanced  cardiac  program  is  based  on  the  hypothesis  that 
inhibitors of hyperdynamic contraction and obstruction of left ventricular blood flow may counteract the pathologic effects of mutations 
in  the  sarcomere  that  lead  to  hypertrophic  cardiomyopathies.  A  targeted  oral  therapy  addressing  this  disease  etiology  may  improve 
symptoms, exercise capacity and potentially slow disease progression. 

We also have a late stage program based on the hypothesis that activators of cardiac myosin may address certain adverse properties 
of existing positive inotropic agents. Our novel cardiac myosin activators work by a mechanism that directly stimulates the activity of 
the cardiac myosin motor protein, without increasing the intracellular calcium concentration. They accelerate the rate-limiting step of 
the myosin enzymatic cycle and shift it in favor of the force-producing state. Rather than increasing the velocity of cardiac contraction, 
this mechanism instead lengthens the systolic ejection time, which results in increased cardiac function in a potentially more oxygen-
efficient manner.

Aficamten 

Aficamten is a novel, oral, small molecule cardiac myosin inhibitor that our company scientists discovered. Aficamten arose from 
an extensive chemical optimization program conducted with attention to therapeutic index and pharmacokinetic properties that may 
translate into next-in-class potential in clinical development. Aficamten was purposely designed to reduce the hypercontractility that is 
associated  with  HCM.  In  preclinical  models,  aficamten  reduces  myocardial  contractility  by  binding  directly  to  cardiac  myosin  at  a 
distinct and selective allosteric binding site, thereby preventing myosin from entering a force producing state. Aficamten reduces the 
number  of  active  actin-myosin  cross  bridges  during  each  cardiac  cycle  and  consequently  reduces  myocardial  contractility.  This 
mechanism of action may be therapeutically effective in conditions characterized by excessive hypercontractility, such as HCM. The 
preclinical pharmacokinetics of aficamten were characterized evaluated and optimized for potential rapid onset, ease of titration and 
rapid  symptom  relief  in  the  clinical  setting.  The  initial  focus  of  the  development  program  for  aficamten  will  include  an  extensive 
characterization of its pharmacokinetics/pharmacodynamic (“PK/PD”) relationship as has been a hallmark of Cytokinetics’ development 
programs in muscle pharmacology. The overall development program will assess the potential of aficamten to improve exercise capacity 
and relieve symptoms in patients with hyperdynamic ventricular contraction due to HCM.

HCM is a disease in which the heart muscle (myocardium) becomes abnormally thick (hypertrophied). The thickening of cardiac 
muscle leads to the inside of the left ventricle becoming smaller and stiffer, and thus the ventricle becomes less able to relax and fill 
with blood. This ultimately limits the heart’s pumping function, resulting in symptoms including chest pain, dizziness, shortness of 
breath, or fainting during physical activity. 

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HCM is the most common monogenic inherited cardiovascular disorder, with approximately 280,000 patients diagnosed in the 
U.S., however, there are an estimated 400,000-800,000 additional patients who remain undiagnosed, a rate that is growing at the same 
rate as the population. Two-thirds of patients with HCM have obstructive HCM (oHCM), in which the thickening of the cardiac muscle 
leads to left ventricular outflow tract (LVOT) obstruction, while one-third have non-obstructive HCM (nHCM), in which blood flow 
isn’t impacted, but the heart muscle is still thickened. HCM is fairly evenly split across gender and while patients are typically diagnosed 
in  their  early  40s,  the  average  age  of  an  oHCM  patient  is  in  the  early  60s.  People  with  HCM  are  at  high  risk  of  also  developing 
cardiovascular complications including atrial fibrillation, stroke and mitral valve disease. People with HCM are at risk for potentially 
fatal ventricular arrhythmias and it is one of the leading causes of sudden cardiac death in younger people or athletes. A subset of patients 
with  HCM  are  at  high  risk  of  progressive  disease  leading  to  dilated  cardiomyopathy  and  heart  failure  necessitating  cardiac 
transplantation.

FDA  has  granted  aficamten  orphan  drug  designation  for  the  treatment  of  symptomatic  HCM  and  Breakthrough  Therapy 

Designation for aficamten for the treatment of oHCM.

SEQUOIA-HCM

SEQUOIA-HCM was a Phase 3 randomized, placebo-controlled, double-blind, multi-center clinical trial designed to evaluate 
aficamten in patients with symptomatic oHCM on background medical therapy for 24 weeks. The primary objective was to assess the 
effect  of  aficamten  on  change  in  peak  oxygen  uptake  (pVO2)  measured  by  CPET  from  baseline  to  week  24.  Secondary  objectives 
included change in KCCQ score from baseline to week 12 and week 24, the proportion of patients with ≥1 class improvement in NYHA 
Functional Class from baseline to week 12 and week 24, change in post-Valsalva LVOT-G to week 12 and week 24, the proportion of 
patients with post-Valsalva LVOT-G <30 mmHg, and change in total workload during CPET to week 24. 

On December 27, 2023, we announced positive topline results of SEQUOIA-HCM. The results of SEQUOIA-HCM show that 
treatment  with  aficamten  significantly  improved  exercise  capacity  compared  to  placebo,  increasing  peak  oxygen  uptake  (pVO2) 
measured by cardiopulmonary exercise testing (CPET) by a least square mean difference (95% CI) of 1.74 (1.04 - 2.44) mL/kg/min 
(p=0.000002).  The  treatment  effect  with  aficamten  was  consistent  across  all  prespecified  subgroups  reflective  of  patient  baseline 
characteristics and treatment strategies, including patients receiving or not receiving background beta-blocker therapy.

Statistically significant (p<0.0001) and clinically meaningful improvements were also observed in all 10 prespecified secondary 
endpoints,  including  Kansas  City  Cardiomyopathy  Questionnaire  Clinical  Summary  Score  (KCCQ-CSS)  at  weeks  12  and  24,  the 
proportion of patients with ≥1 class improvement in New York Heart Association (NYHA) functional class at weeks 12 and 24, change 
in  provoked  left  ventricular  outflow  tract  gradient  (LVOT-G)  and  proportion  <30  mmHg  at  weeks  12  and  24,  as  well  as  exercise 
workload and guideline-eligibility for septal reduction therapy. 

Aficamten  was  well-tolerated  in  SEQUOIA-HCM  with  an  adverse  event  profile  comparable  to  placebo.  Treatment  emergent 
serious adverse events occurred in 8 (5.6%) and 13 (9.3%) patients on aficamten and placebo, respectively. Core echocardiographic left 
ventricular  ejection  fraction  (LVEF)  was  observed  to  be  <50%  in  5  patients  (3.5%)  on  aficamten  compared  to  1  patient  (0.7%)  on 
placebo. There were no instances of worsening heart failure or treatment interruptions due to low LVEF.

The  full  results  of  SEQUOIA-HCM  will  be  presented  at  an  upcoming  medical  conference  and  published  in  a  peer-reviewed 

medical journal.

MAPLE-HCM

MAPLE-HCM (Metoprolol vs Aficamten in Patients with LVOT Obstruction on Exercise Endpoints in HCM) is our second 
Phase 3 clinical trial of aficamten as monotherapy in patients with oHCM. It is a Phase 3, multi-center, randomized, double-blind, active-
comparator  trial  in  patients  with  symptomatic  oHCM  and  elevated  LVOT  gradient,  which  is  expected  to  enroll  approximately  170 
patients.  The  primary  endpoint  is  change  in  peak  oxygen  uptake  (pVO2),  assessed  by  CPET  from  baseline  to  Week  24.  Secondary 
endpoints include change in NYHA class, KCCQ, N-terminal prohormone brain natriuretic peptide (NT-proBNP), and measures of 
structural remodeling. 

On August 3, 2023, we announced that we had initiated patient enrollment in MAPLE-HCM.

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ACACIA-HCM

ACACIA-HCM (Assessment Comparing Aficamten to Placebo on Cardiac Endpoints in Adults with Non-Obstructive HCM) is 
a Phase 3, multi-center, randomized, double-blind, placebo-controlled clinical trial. The trial is expected to enroll approximately 420 
patients with symptomatic nHCM. The primary endpoint is the change in KCCQ Clinical Summary Score from baseline to Week 36. 
Secondary endpoints include change from baseline to Week 36 in the following: exercise capacity as measured by CPET, proportion of 
patients with an improvement of at least 1 NYHA Functional Class, NT-proBNP, and left atrial volume index. Additionally, while the 
primary analysis will take place at 36 weeks, patients will continue treatment with aficamten or placebo for up to 72 weeks in order to 
evaluate additional secondary and exploratory analyses including the time to first cardiovascular event.

On September 6, 2023, we announced that ACACIA-HCM is open to enrollment of patients.

FOREST-HCM (formerly REDWOOD-HCM OLE)

In May 2021, we announced that the first site had been activated to enroll patients in REDWOOD-HCM OLE, an open-label 
extension  clinical  study  designed  to  assess  the  long-term  safety  and  tolerability  of  aficamten  in  patients  with  symptomatic  oHCM. 
Eligible  patients  were  initially  to  have  completed  participation  in  REDWOOD-HCM.  However,  since  initiation  of  the  open-label 
extension clinical study, we expanded eligibility to include patients having participated in SEQUOIA-HCM, our first Phase 3 clinical 
trial of aficamten for the treatment of oHCM, and as a result, the trial has been renamed FOREST-HCM.

On  March  4,  2023,  we  announced  48-week  data  from  FOREST-HCM  at  the  American  College  of  Cardiology  72nd  Annual 
Scientific Session. Specifically, we announced that new data through 48 weeks of treatment showed that aficamten was associated with 
significant reductions in the average resting LVOT-G (mean change from baseline (SD) = -32 (28) mmHg, p<0.0002) and Valsalva 
LVOT-G  (mean  change  from  baseline  (SD)  =  -47  (28)  mmHg,  p<0.0001).  Treatment  with  aficamten  also  resulted  in  significant 
improvements  in  NYHA  class,  with  88%  of  patients  experiencing  a  ≥1  NYHA  Functional  Class  improvement,  and  significant 
improvements in NT-proBNP, with an average decrease of 70% from baseline to Week 48 (p<0.0001). At baseline, 19 patients met 
eligibility criteria for septal reduction therapy (SRT), defined as NYHA Class III and peak LVOT-G ≥50 mmHg, but treatment with 
aficamten eliminated SRT eligibility in all 19 patients at 48 weeks. Aficamten was safe and well-tolerated, with no treatment-related 
serious adverse events (SAEs). There were no instances of LVEF <50% attributed to aficamten. One dose reduction and one temporary 
dose interruption occurred, neither of which were attributed to treatment with aficamten.

On October 19, 2023, we announced new long-term efficacy and safety data from FOREST-HCM. Specifically, we announced 
that more than 200 patients had been enrolled in FOREST-HCM as of such date and 143 patients were available for this analysis. Of the 
94 patients who had completed the titration period (by Week 12), approximately two-thirds were receiving the 15 mg or 20 mg doses of 
aficamten. During the titration period, there had been no treatment-related instances of left ventricular ejection fraction (LVEF) <50%. 
During the maintenance phase, there had been no instances of LVEF <40%, which would have required dose interruption, and only 
three instances of LVEF <50% that required a dose down-titration. Therefore, of the 579 monitoring echocardiograms completed during 
the maintenance phase of treatment, 99.5% of them did not result in a dose reduction. Additionally, after prolonged treatment for more 
than  two  years  in  some  patients,  the  mean  resting  left  ventricular  outflow  tract  gradients  (LVOT-G)  and  mean  Valsalva  LVOT-Gs 
remained reduced and below the diagnostic threshold for oHCM. As of such date, patients had also experienced sustained reductions in 
cardiac biomarkers and improved symptoms. As of such date, the KCCQ increased by ≥5 points in 71% of patients, 30% of whom had 
an improvement of ≥10 points. Approximately half of patients were, as of such date, asymptomatic at one year by NYHA Functional 
Class assessment, and 80% of patients improved by one or more Functional Class at every visit after starting treatment with aficamten. 
Of patients eligible for septal reduction therapy (SRT) at baseline, 90% were no longer SRT-eligible at the time of the analysis. In 
addition, as of the date of the analysis, aficamten had been generally well-tolerated, with 60% of patients experiencing at least one 
treatment emergent adverse event (TEAE) but no treatment-related serious adverse events (SAEs) as assessed by investigators, and no 
patient deaths.

FOREST-HCM continues to enroll patients.

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Ji Xing Collaboration for Greater China

On July 14, 2020, we entered into the Ji Xing Aficamten License Agreement, pursuant to which we granted to Ji Xing an exclusive 
license to develop and commercialize aficamten in China and Taiwan. Under the terms of the Ji Xing Aficamten License Agreement, 
we may be eligible to receive from Ji Xing milestone payments totaling up to $200.0 million for the achievement of certain development 
and commercial milestone events in connection to aficamten in the field of oHCM, and/or nHCM and other indications. In addition, Ji 
Xing will pay us tiered royalties in the low-to-high teens range on the net sales of pharmaceutical products containing aficamten in 
China  and  Taiwan,  subject  to  certain  reductions  for  generic  competition,  patent  expiration  and  payments  for  licenses  to  third  party 
patents. The Ji Xing Aficamten License Agreement, unless terminated earlier, will continue on a market-by-market basis until expiration 
of the relevant royalty term. 

Royalty Pharma Revenue Interest

On January 7, 2022, we entered into a Revenue Participation Right Purchase Agreement, which we refer to as the RP Aficamten 
RPA, with Royalty Pharma Investments 2019 ICAV, which we refer to as RPI ICAV, pursuant to which RPI ICAV purchased rights to 
certain  revenue  streams  from  net  sales  of  pharmaceutical  products  containing  aficamten  by  us,  our  affiliates  and  our  licensees  in 
exchange for up to $150.0 million in consideration, $50.0 million of which was paid on the closing date, $50.0 million of which was 
paid to us on March 10, 2022 following the initiation of the first pivotal trial in oHCM for aficamten and $50.0 million of which was 
paid to us in September 2023 following the initiation of the first pivotal clinical trial in nHCM for aficamten. The RP Aficamten RPA 
also provides that the parties will negotiate terms for additional funding if we achieve proof of concept results in certain other indications 
for aficamten, with a reduction in the applicable royalty if we and RPI ICAV fail to agree on such terms in certain circumstances.

Pursuant to the RP Aficamten RPA, RPI ICAV purchased the right to receive a percentage of net sales equal to 4.5% for annual 
worldwide  net  sales  of  pharmaceutical  products  containing  aficamten  up  to  $1  billion  and  3.5%  for  annual  worldwide  net  sales  of 
pharmaceutical products containing aficamten in excess of $1 billion, subject to reduction in certain circumstances.

Omecamtiv mecarbil

We are developing omecamtiv mecarbil as a potential treatment across the continuum of care in heart failure both for use in the 

hospital setting and for use in the outpatient setting.

Omecamtiv mecarbil is a selective, small molecule cardiac myosin activator, the first of a novel class of myotropes designed to 
directly target the contractile mechanisms of the heart, binding to and recruiting more cardiac myosin heads to interact with actin during 
systole. Omecamtiv mecarbil is designed to increase the number of active actin-myosin cross bridges during each cardiac cycle and 
consequently augment the impaired contractility that is associated with heart failure with reduced ejection fraction, or HFrEF. 

Heart failure is a grievous condition that is estimated to affect more than 64 million people worldwide an estimated half of whom 
have reduced left ventricular function. It is the leading cause of hospitalization and readmission in people age 65 and older. Despite 
broad use of standard treatments and advances in care, the prognosis for patients with heart failure is generally poor. An estimated one 
in five people over the age of 40 are at risk of developing heart failure, and approximately 50% of people diagnosed with heart failure 
will die within five years of initial hospitalization. Approximately 2 million people in the U.S. are estimated to have an ejection fraction 
<30%, indicating they may have worsening heart failure.

GALACTIC-HF

GALACTIC-HF was a Phase 3 cardiovascular outcomes clinical trial of omecamtiv mecarbil which was conducted by Amgen, 
in collaboration with Cytokinetics. The primary objective of this double-blind, randomized, placebo-controlled multicenter clinical trial 
was to determine if treatment with omecamtiv mecarbil when added to standard of care is superior to standard of care plus placebo in 
reducing the risk of cardiovascular death or heart failure events in patients with high risk chronic heart failure and reduced ejection 
fraction. GALACTIC-HF was conducted under an SPA with the FDA. GALACTIC-HF completed enrollment in mid-2019, having 
enrolled 8,256 symptomatic chronic heart failure patients with reduced ejection fraction in over 1,000 sites in 35 countries who were 
either currently hospitalized for a primary reason of heart failure or had had a hospitalization or admission to an emergency room for 
heart failure within one year prior to screening. Patients were randomized to either placebo or omecamtiv mecarbil with dose titration 
up to a maximum dose of 50 mg twice daily based on the plasma concentration of omecamtiv mecarbil after initiation of drug therapy. 
The primary endpoint was a composite of time to cardiovascular death or first heart failure event, whichever occurs first, with heart 
failure event defined as hospitalization, emergency room visit, or urgent unscheduled clinic visit for heart failure. Secondary endpoints 
included time to cardiovascular death; patient reported outcomes as measured by the KCCQ Total Symptom Score; time to first heart 
failure hospitalization; and time to all-cause death.

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GALACTIC-HF: Primary Results

The  results  of  GALACTIC-HF  showed  that  after  a  median  duration  of  follow-up  of  21.8  months,  the  trial  demonstrated  a 
statistically significant effect of treatment with omecamtiv mecarbil to reduce risk of the primary composite endpoint of CV death or 
heart failure events (heart failure hospitalization and other urgent treatment for heart failure) compared to placebo in patients treated 
with standard of care. A first primary endpoint event occurred in 1,523 of 4,120 patients (37.0%) in the omecamtiv mecarbil group and 
in 1,607 of 4,112 patients (39.1%) in the placebo group (hazard ratio, 0.92; 95% confidence interval [CI] 0.86, 0.99; p=0.025). This 
effect was observed without evidence of an increase in the overall rates of myocardial ischemic events, ventricular arrhythmias or death 
from cardiovascular or all causes.

The statistically significant reduction in the composite of heart failure events or CV deaths, without significant imbalances in the 
overall  incidence  of  adverse  events  across  treatment  arms,  was  observed  in  one  of  the  broadest  and  most  diverse  range  of  patients 
enrolled in a contemporary heart failure trial. GALACTIC-HF included both inpatients and outpatients, and with a high representation 
of  participants  with  moderate  to  severe  heart  failure  symptoms  as  well  as  lower  ejection  fraction,  systolic  blood  pressure  and renal 
function. 

No reduction in the secondary endpoint of time to CV death was observed. Death from cardiovascular causes occurred in 808 
(19.6%) patients treated with omecamtiv mecarbil and 798 patients (19.4%) assigned to placebo (hazard ratio, 1.01; 95% CI, 0.92 to 
1.11; p=0.86). The pre-specified analysis of change from baseline to week 24 in the KCCQ total symptom score by randomization 
setting (inpatient mean difference [95% CI]: 2.50 [0.54, 4.46], outpatient mean difference: -0.46 [-1.40, 0.48], joint P = 0.028) did not 
meet the significance threshold of P=0.002 based upon the multiplicity control testing procedure. No other secondary endpoints were 
met in accordance with the prespecified statistical analysis. 

The effect of omecamtiv mecarbil was consistent across most prespecified subgroups and with a potentially greater treatment 
effect suggested in patients with a lower LVEF (LVEF ≤28%, n=>4,000, hazard ratio, 0.84; 95% CI 0.77, 0.92; interaction p=0.003). 
Omecamtiv mecarbil also significantly decreased NT-proBNP concentrations by 10% (95% CI 6-14%) at Week 24 compared to placebo. 

The overall safety profile of omecamtiv mecarbil in GALACTIC-HF appeared to be consistent with data from previous trials. 
Adverse events and treatment discontinuation of study drug were balanced between the treatment arms. In general, the overall rates of 
myocardial ischemia, ventricular arrhythmias and death were similar between treatment and placebo groups. Additionally, there was no 
significant difference in the change in systolic blood pressure between baseline and at 24 or 48 weeks between the omecamtiv mecarbil 
and placebo groups. There was a small but significant decrease in heart rate in participants assigned to omecamtiv mecarbil compared 
to placebo at both timepoints. Median cardiac troponin I concentration increased 4 ng/L (95% CI 3-5; limit of detection, 6 ng/L) from 
baseline with omecamtiv mecarbil compared to placebo.

GALACTIC-HF: Further Analyses

Since our release of the primary results, we have conducted and announced supplemental and subgroup analyses suggesting that 
certain subgroups of patients treated with omecamtiv mecarbil in GALACTIC-HF may have benefited more than the general patient 
population in such trial. 

For example, additional results showed that the effect of omecamtiv mecarbil on the primary composite endpoint in GALACTIC-
HF was consistent across most prespecified subgroups and with a potentially greater treatment effect suggested in patients with a lower 
LVEF (LVEF ≤28%, n=4,456, hazard ratio, 0.84; 95% CI 0.77, 0.92; interaction p=0.003). Supplemental analyses of this lower ejection 
fraction subgroup in GALACTIC-HF showed that this potentially greater treatment effect in patients who received omecamtiv mecarbil 
was consistently observed in patients with characteristics that may indicate advanced heart failure status, such as being hospitalized 
within the last 3 months (HR 0.83, 95% CI 0.74 – 0.93, p=0.001), having New York Association Class III or IV heart failure (HR 0.80, 
95% CI 0.71 – 0.90, p<0.001), higher N-terminal-pro brain natriuretic peptide levels (HR 0.77, 95% CI 0.69 – 0.87, p<0.001), and lower 
blood pressures (HR 0.81, 95% CI 0.70 – 0.92, p=0.002). The ARR ranged from 5.2% to 8.1% in these subgroups as compared to the 
ARR of 2.1% observed in the overall population. Additionally, a supplemental analysis of the continuous relationship between ejection 
fraction and the hazard ratio for the primary composite endpoint in GALACTIC-HF suggested a potentially stronger treatment effect of 
omecamtiv mecarbil in patients with increasingly lower ejection fractions.

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Another  analysis  assessed  the  effect  of  omecamtiv  mecarbil  on  clinical  outcomes  in  relationship  to  patient  baseline  ejection 
fraction by evaluating the effect of patient treatment with omecamtiv mecarbil based on quartiles of baseline EF defined as EF ≤22%, 
EF 23-28%, EF 29-32% and EF ≥33% as well as considering baseline EF as a continuous variable. The incidence of the primary outcome 
of first heart failure event or cardiovascular death increased with decreasing ejection fraction; in the lowest LVEF quartile (EF ≤22%) 
the incidence (35.6 per 100 patient-years) was almost 80% greater than in the highest EF quartile (EF ≥33%; 20 per 100 patient-years). 
Treatment with omecamtiv mecarbil demonstrated a 15% (HR 0.85; 95% CI 0.74-0.97; p = 0.016) and 17% (HR 0.83; 95% CI 0.73-
0.95; p = 0.005) relative risk reduction in the lower two quartiles, respectively, compared to no difference in the upper two quartiles.

Analysis of ejection fraction as a continuous variable demonstrated a progressively larger treatment effect of omecamtiv mecarbil 
with decreasing ejection fraction. Accordingly, the absolute treatment effect on the primary composite endpoint also increased between 
the patients treated with placebo and omecamtiv mecarbil as baseline ejection fraction decreased such that in the lowest ejection fraction 
quartile, there was an absolute reduction of 7.4 events per 100 patient-years, with a number-needed-to-treat of 11.8 patients necessary 
to prevent an event over three years.

An analysis of patients with low blood pressure showed that there was a greater treatment effect from omecamtiv mecarbil on the 
primary composite endpoint of cardiovascular death or first heart failure event than in patients without low blood pressure such that 
there was an absolute risk reduction of 9.8 events per 100 patient-years (hazard ratio, 0.81; 95% confidence interval [CI] 0.70, 0.94; 
interaction  p=0.051).  Patients  with  low  blood  pressure  treated  with  omecamtiv  mecarbil  also  experienced  improvements  in  blood 
pressure over time as did those treated with placebo. Additionally, the incidence of treatment-emergent serious adverse events in patients 
with low blood pressure who received omecamtiv mecarbil (RR 0.88; 95% CI 0.82, 0.95; p<0.001) and adjudicated first stroke (RR 
0.31; 95% CI 0.12, 0.79; p=0.009) was lower compared to placebo.

An analysis of Black patients participating in GALACTIC-HF showed that treatment with omecamtiv mecarbil resulted in a trend 
towards reduction in the primary endpoint by 18% (HR=0.82, 95% CI 0.64-1.04), corresponding to a reduction in the primary event rate 
of 7.7/100 patient-years with a number-needed-to-treat of 13 patients. This result, like the overall study results, was driven primarily by 
a reduction in HF hospitalizations (HR=0.80) and HF events (HR=0.82), with no effect on cardiovascular mortality (HR=1.03). There 
were no significant differences in adverse events in Black patients between the groups treated with omecamtiv mecarbil and placebo.

A further analysis indicated that the rate of the primary outcome in GALACTIC-HF was higher in hospitalized patients in the 
placebo group (38.3/100 person-years [PY]) than in outpatients (23.1/100 PY) with an adjusted hazard ratio (HR) of 1.21 (95% CI 1.12, 
1.31). There was a stepwise gradient in risk, with those randomized as outpatients in the placebo group within 3 months of a heart failure 
event at the highest risk (26.6/100 patient years (PY)) as compared with those 9-12 months post-event (19.0/100 PY) with an adjusted 
hazard ratio (HR) of 1.20 (95% CI 1.01, 1.42), p for trend = 0.008). The effect of omecamtiv mecarbil versus placebo on the primary 
outcome was similar in hospitalized patients (HR 0.89, 95% CI 0.78, 1.01) and outpatients (HR 0.94, 95% CI 0.86, 1.02), indicating 
that omecamtiv mecarbil similarly reduced the risk of the primary outcome both when initiated in hospitalized patients and in outpatients. 
In both hospitalized patients and outpatients, the initiation of omecamtiv mecarbil was safe and well tolerated. Treatment-emergent 
serious adverse events occurred more frequently in patients randomized during hospitalization but did not differ significantly between 
the treatment groups.

New Drug Application/Regulatory

On February 28, 2023, we announced that we received a CRL from the FDA’s Division of Cardiology and Nephrology regarding 
our NDA for omecamtiv mecarbil for the treatment of HFrEF. According to the CRL, GALACTIC-HF is not sufficiently persuasive to 
establish substantial evidence of effectiveness for reducing the risk of heart failure events and cardiovascular death in adults with chronic 
heart failure with HFrEF, in lieu of evidence from at least two adequate and well-controlled clinical investigations. In addition, FDA 
stated that results from an additional clinical trial of omecamtiv mecarbil are required to establish substantial evidence of effectiveness 
for the treatment of HFrEF, with benefits that outweigh the risks. FDA’s decision to issue a CRL followed an FDA Cardiovascular and 
Renal Drugs Advisory Committee’s vote of 8 to 3 in December 2022 that the benefits of omecamtiv mecarbil do not outweigh its risks 
for the treatment of HFrEF.

In 2023, we participated in a Type A meeting with FDA in order to understand FDA’s views regarding the CRL and what may 
be required to support potential approval of omecamtiv mecarbil in the United States, and subsequently submitted a formal dispute 
resolution  request  to  FDA,  with  the  objective  to  appeal  the  FDA's  conclusion,  as  stated  in  the  CRL,  that  substantial  evidence  of 
effectiveness had not been established to support approval of omecamtiv mecarbil. FDA subsequently denied our appeal in November 
2023 and reaffirmed its decision in the CRL that GALACTIC-HF is not sufficiently persuasive to establish substantial evidence of 
effectiveness for reducing the risk of heart failure events and cardiovascular death in adults with chronic heart failure with HFrEF, in 
lieu of evidence from at least two adequate and well-controlled clinical investigations.

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In December 2022, the EMA accepted for review our MAA seeking approval of omecamtiv mecarbil for the treatment of HFrEF 
in the E.U. and the other states of the EEA.  We continue to support reviews and address questions related to the marketing application 
for omecamtiv mecarbil for the treatment of HFrEF with the EMA.

In  November  2022,  our  partner,  Ji  Xing  announced  that  the  Center  for  Drug  Evaluation  of  the  National  Medical  Products 
Administration of the People’s Republic of China had accepted the submission of the NDA for omecamtiv mecarbil for the treatment 
of HFrEF. Subsequently, Ji Xing submitted a request for voluntary withdrawal of the NDA for omecamtiv mecarbil to the Center for 
Drug Evaluation of the National Medical Products Administration of the People’s Republic of China, subject to potential re-submission 
upon receipt of favorable feedback from EMA or FDA with regard to potential drug approval for omecamtiv mecarbil in the EU or US, 
respectively. 

Ji Xing Collaboration for Greater China

On December 20, 2021, we entered into the Ji Xing OM License Agreement, pursuant to which we granted to Ji Xing an exclusive 
license to develop and commercialize omecamtiv mecarbil in China and Taiwan. Under the terms of the Ji Xing OM License Agreement, 
we may be eligible to receive from Ji Xing additional payments totaling up to $330.0 million for the achievement of certain commercial 
milestone events in China in connection to omecamtiv mecarbil. In addition, Ji Xing will pay us tiered royalties in the mid-teens to the 
low twenties range on the net sales of pharmaceutical products containing omecamtiv mecarbil in China and Taiwan, subject to certain 
reductions  for  generic  competition,  patent  expiration  and  payments  for  licenses  to  third  party  patents.  The  Ji  Xing  OM  License 
Agreement, unless terminated earlier, will continue on a market-by-market basis until expiration of the relevant royalty term. 

Royalty Pharma Revenue Interest

In  2017,  we  entered  into  a  Royalty  Purchase  Agreement,  which  we  refer  to  as  the  RP  OM  RPA,  with  Royalty  Pharma 
Development Funding, LLC, or RPFT, and amended the RP OM RPA on January 7, 2022. Pursuant to the RP OM RPA, as amended, 
RPFT has a revenue interest entitling it to up to 5.5% of our and our affiliates’ and licensees’ worldwide net sales of omecamtiv mecarbil. 
If FDA or EMA approves omecamtiv mecarbil in the future, the royalty rate at which payments are owed to RPFT will be 5.5%. 

CK-586

CK-586 is a novel, selective, oral, small molecule cardiac myosin inhibitor designed to reduce the hypercontractility associated 
with  heart  failure  with  preserved  ejection  fraction,  or  HFpEF.  In  preclinical  models,  CK-586  reduced  cardiac  hypercontractility  by 
decreasing the number of active myosin cross-bridges during cardiac contraction thereby reducing the contractile force, without effect 
on calcium transients.

Dosing  of  patients  in  a  Phase  1  clinical  trial  of  CK-586  commenced  in  May  2023.  The  primary  objective  of  this  Phase  1 
randomized, double-blind, placebo-controlled, double-blind, multi-part single and multiple ascending dose clinical study is to evaluate 
the safety, tolerability and pharmacokinetics of CK-586 when administered orally as single or multiple doses to healthy participants. 
The study design includes single ascending dose and multiple ascending dose cohorts. We proceeded to begin the multiple ascending 
dose cohorts. The study is ongoing. 

CK-136

CK-136 is a novel, selective, oral, small molecule cardiac troponin activator. In preclinical models, CK-136 increases myocardial 
contractility by binding to cardiac troponin through an allosteric mechanism that sensitizes the cardiac sarcomere to calcium, facilitating 
more actin-myosin cross bridge formation during each cardiac cycle thereby resulting in increased myocardial contractility. Similar to 
cardiac  myosin  activation,  preclinical  research  has  shown  that  cardiac  troponin  activation  does  not  change  the  calcium  transient  of 
cardiac myocytes. 

Dosing of patients in a Phase 1 clinical trial of CK-136 commenced in December 2022. The primary objective of this Phase 1 
randomized,  double-blind,  placebo-controlled,  single  and  multiple  ascending  dose  trial  is  to  assess  the  safety,  tolerability  and 
pharmacokinetics of CK-136 when administered orally as single or multiple doses to healthy participants. The study design, as amended, 
includes  five  groups  of  at  least  eight  participants  in  single  ascending  dose  cohorts  and  four  groups  of  at  least  eight  participants  in 
multiple-dose  ascending  cohorts.  A  final  optional  cohort  will  include  eight  participants  in  an  open-label,  2-period  crossover  arm  to 
investigate the effect of food on CK-136. We have completed the single ascending dose cohorts in the Phase 1 study of CK-136 in 
healthy participants and have begun analyses of the data. 

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Skeletal Muscle Program

Our skeletal muscle contractility program is focused on the activation of the skeletal sarcomere, the basic unit of skeletal muscle 
contraction. The skeletal sarcomere is a highly ordered cytoskeletal structure composed of skeletal muscle myosin, actin, and a set of 
regulatory  proteins,  which  include  the  troponins  and  tropomyosin.  This  program  leverages  our  expertise  developed  in  our  ongoing 
discovery and development of cardiac sarcomere activators.

We  believe  that  our  skeletal  sarcomere  activators  may  lead  to  new  therapeutic  options  for  diseases  and  medical  conditions 
associated with neuromuscular dysfunction and potentially also conditions associated with aging and muscle weakness and wasting. The 
clinical  effects  of  muscle  weakness  and  wasting,  fatigue  and  loss  of  mobility  can  range  from  decreased  quality  of  life  to,  in  some 
instances,  life-threatening  complications.  By  directly  improving  skeletal  muscle  function,  a  small  molecule  activator  of  the  skeletal 
sarcomere potentially could enhance functional performance and quality of life in patients suffering from diseases or medical conditions 
associated with skeletal muscle weakness or wasting, such as ALS, SMA, chronic obstructive pulmonary disease (COPD) or sarcopenia 
(general frailty associated with aging).

We currently have no clinical stage drug candidates arising from our skeletal muscle contractility program.

Ongoing Research in Skeletal Muscle Activators 

We are conducting translational research in preclinical models of disease and muscle function with FSTAs to explore the potential 

clinical applications of this novel mechanism in diseases or conditions associated with skeletal muscle dysfunction. 

Beyond Muscle Contractility

We developed preclinical expertise in the mechanics of skeletal, cardiac and smooth muscle that extends from proteins to tissues 
to intact animal models. Our translational research in muscle contractility has enabled us to better understand the potential impact of 
small molecule compounds that increase cardiac or skeletal muscle contractility and to apply those findings to the further evaluation of 
our drug candidates in clinical populations. In addition to contractility, other major functions of muscle play a role in certain diseases 
that could benefit from novel mechanism treatments. Accordingly, our knowledge of muscle contractility may serve as an entry point to 
the discovery of novel treatments for disorders involving muscle functions other than muscle contractility. We are leveraging our current 
understandings of muscle biology to investigate new ways of modulating these other aspects of muscle function for other potential 
therapeutic applications.

Commercial Readiness

We began building our commercial capabilities in the U.S. prior to the potential FDA approval and launch of omecamtiv mecarbil, 
our cardiac myosin activator. Upon receipt of the CRL from FDA in response to our NDA for omecamtiv mecarbil, we maintained the 
infrastructure that had been built and further refined the team and activities in anticipation of what may now be our first commercial 
launch  with  aficamten,  our  cardiac  myosin  inhibitor,  as  early  as  2025.  We  had  hired  a  number  of  headquarter  and  other  positions, 
including our field sales leadership team with substantial cardiovascular experience, as well as market access team that includes filed 
payer professionals and other professionals with experience in HEOR, pricing, market analyses and commercial strategies, systems, and 
operational  execution.  We  plan  to  expand  the  team  with  customer-facing  positions  as  we  near  potential  FDA  approval  in  2025. 
Additionally, we have established our field-based medical affairs team, inclusive of medical directors, medical education and medical 
communications  functions,  as  well  as  medical  science  liaisons  in  key  geographies  across  the  U.S..  In  Europe,  we  have  filled  key 
leadership positions in medical affairs and market access and hired an experienced executive as Head of Europe.

Our  go-to-market  approach  will  include  three  phases;  learn,  design,  and  build.  Our  focus  in  2023  was  on  learning.  We  have 
commissioned market research with nearly 850 healthcare professionals and more than 160 individuals suffering from HCM. Market 
research and clinical data has informed our target product profile, positioning, potential customer profiles and anticipated differentiators 
for  a  proposed  REMS  program.  Based  on  our  market  research,  we  have  learned  the  overall  journey  to  diagnosis  is  complex  and 
challenging due to the unique symptoms present in each patient along with limited disease awareness across the broader health care 
system, leading to confusion and complexity for patients and the healthcare professionals who treat them. HCM patients experience 
many  complications,  and,  in  addition  to  the  physical  impact,  patients  experience  profound  psychological  effects  that  impact  social 
involvement and other aspects of everyday life. 

With a refined understanding of the patient experience, we have also begun to design a comprehensive patient and HCP support 
program to help address patient needs to facilitate ease of transitioning to therapy with a cardiac myosin inhibitor. The program design 
will include reimbursement support, affordability programs and patient education resources to support the patient journey. 

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Market research has revealed challenges that have impacted the adoption and uptake of another cardiac myosin inhibitor related 
to the ETASU REMs program, including echo monitoring, pharmacy certification, drug-drug interactions, down titration challenges and 
overall REMS process complexity. We believe aficamten may have attributes that could impact differentiation, including time to onset 
and reversibility, predictable dose response, no clinically meaningful P450 liabilities resulting in REMS related drug-drug interaction 
monitoring and frequency of echo monitoring. We have also begun development of a market development and education campaign, 
building out the field commercial training modules, starting to engage with payers with compliant, pre-approval information planning 
and planning to build out the necessary technologies to optimize customer engagement.  

We recognize the critical importance of market access; critical to contracting with payers is our experienced account team with 
established relationships with key payer customers. We have hired a seasoned account management team that covers over 100 plans that 
represent greater than 90% of covered lives for our priority segment. The team has interacted with every major payer in introducing our 
company and will engage further in 2024 to share results from SEQUOIA-HCM with the goal to educate payers on the potential clinical 
meaningfulness of the results thereof, as well as health economic data and the anticipated launch timeline for aficamten. We maintain a 
strong  commitment  to  health  economics  research,  which  is  intended  to  facilitate  us  in  effectively  conveying  the  potential  value 
proposition of aficamten to a broad range of stakeholders. The two platforms that we expect to generate this value include the results of 
SEQUOIA-HCM and the clinical attributes of aficamten. Our customer-facing strategy and deployment has been informed by insights 
gathered from potential health care professional customers through market research, focus groups and advisory boards. This strategy 
and deployment, coupled with secondary data, patient diagnosis data, prescriptions and treatment data, have identified a universe of 
approximately 10,000 treaters across 500 to 700 healthcare organizations, which represent approximately 75% of HCM patient volume, 
a focused group covering the vast majority of patients, enabling the design of an efficient and impactful customer-facing structure. 

Manufacturing Resources and Product Supply 

Our drug candidates require precise high-quality manufacturing that is compliant with good manufacturing processes (or foreign 
equivalent) and other applicable laws. We have no manufacturing capabilities and rely on third party sources for the supply or sourcing 
of raw materials, the manufacture of active pharmaceutical ingredients and the manufacture and packaging of finished drug products for 
both clinical trial materials and commercial supply. 

We have established relationships with leading contract manufacturers in North America and Western Europe for the manufacture 
and supply of active pharmaceutical ingredients and finished drug product for use in our clinical trials. Clinical trial materials sourced 
from contract manufacturers generally have longer lead times than commercial product, have a higher cost per unit as a result of smaller 
batch  sizes,  and  may  be  more  difficult  to  manufacture  to  necessary  specifications.  As  a  result,  we  endeavor  to  seek  contract 
manufacturers with proven manufacturing capabilities and quality standards whom we can rely on for timely supply. For our portfolio 
of small molecules, we continue to expand our network through well-established and reputable third-party contract manufacturers for 
our CMC development and manufacturing that have good regulatory standing, suitable manufacturing capabilities and capacities. These 
third parties must comply with applicable regulatory requirements, including FDA’s cGMP, the E.U.’s Guidelines on Good Distribution 
Practice (cGDP), as well as other stringent regulatory requirements enforced by the FDA or foreign regulatory agencies, as applicable, 
and are subject to routine inspections by such regulatory agencies. In addition, through our third-party contract manufacturers and data 
service providers, we continue to provide serialized commercial products as required to comply with the Drug Supply Chain Security 
Act.

We monitor and evaluate the performance of our third-party contract manufacturers on an ongoing basis for compliance with 
these requirements and to affirm their continuing capabilities to meet both our commercial and clinical needs. We employ highly skilled 
personnel with both technical and manufacturing experience to diligently manage the activities at our third-party contract manufacturers 
and other supply chain partners, and our quality department audits them on a periodic basis.

In  the  event  any  of  our  drug  candidates  were  to  be  approved  for  commercial  marketing  by  the  FDA  or  any  other  regulatory 
authorities,  we  would  need  to  enter  into  contractual  arrangements  with  contract  manufacturers  for  the  manufacture  of  active 
pharmaceutical ingredients and packaging of finished drug product for commercial use.

We have contract manufacturing arrangements in place with leading contract manufacturers for the development and supply of 

the active pharmaceutical ingredient and finished drug product for aficamten for use in our clinical trials.

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Competition

There are many companies focused on the development of small molecules for the treatment HCM, HFrEF and other diseases 
that  our  drug  candidates  are  intended  to  treat.  Our  competitors  and  potential  competitors  include  major  pharmaceutical  and 
biotechnology companies, as well as academic research institutions, clinical reference laboratories and government agencies that are 
pursuing research activities similar to ours. Many of the organizations competing with us have greater capital resources, larger research 
and development staff and facilities, deeper regulatory expertise and more extensive product manufacturing and commercial capabilities 
than we do, which may afford them a competitive advantage.

Competition for Aficamten

If aficamten is approved for sales and marketing by the FDA or other regulatory authorities for the treatment of HCM, we 
believe it will likely compete with Camzyostm (mavacamten), a first in class cardiac myosin inhibitor marketed by Bristol Myers 
Squibb. In addition to Camzyostm, other companies, including but not limited to Edgewise Therapeutics, Tenaya Therapeutics, 
Novartis AG, Eli Lilly, Boehringer Ingelheim, Gilead and Imbria are conducting clinical trials and pre-clinical activities in HCM and 
could complete with aficamten.

As a condition to its FDA approval, Camzyostm is subject to a REMS program that may be slowing its market uptake. We 

cannot predict whether FDA will impose a similar REMS program as a condition to a potential, future approval of aficamten or 
whether the FDA will alter or lessen the REMS program for CAMZYOSTM altering the competitive landscape. Despite the challenges 
associated with a REMS program, Bristol Myers Squibb has been able to enroll many physicians in its training program and has been 
able to start new patients on therapy. We expect that this will increase over time with more experience with this class of drugs.

We believe that our ability to successfully compete will depend on, among other things:

efficacy, safety and reliability of aficamten, both alone and in combination with other therapies;

the timing and scope of regulatory approval;

our ability to obtain regulatory approvals and marketing authorizations for aficamten;

the imposition by FDA or other regulatory authorities of a REMS program that is differentiated and less burdensome to 
healthcare providers, pharmacists and patients than the REMS program to which CAMZYOSTM is subject;

our ability to manufacture and sell commercial quantities of aficamten product to the market;

our ability to gain market access, successfully commercialize aficamten and secure coverage and adequate reimbursement in 
approved indications;

product acceptance by physicians and other health care providers;

protection of our intellectual property, including our ability to enforce our intellectual property rights against potential generic 
competition; and

the availability of substantial capital resources to fund development and commercialization activities.

•

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•

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•

•

•

•

Competition for Omecamtiv Mecarbil

We believe the principal competition for omecamtiv mecarbil, if ultimately approved for sales and marketing by FDA and/or 
other regulatory agencies for the treatment of HFrEF includes generic drugs, such as milrinone, dobutamine or digoxin, categories of 
generic  therapies,  including  beta-blockers,  angiotensin-converting  enzyme  (ACE)  inhibitors,  angiotensin  receptor  blockers  (ARBs), 
Mineralocorticoid  receptor  antagonists  (MRAs),  and  branded  drugs  such  as  CORLANOR®  (ivabradine),  ENTRESTO® 
(sacubitril/valsartan)  and  VERQUVO®  (vericiguat).  Omecamtiv  mecarbil  could  also  potentially  compete  against  other  novel  drug 
candidates and therapies in development, such as those being developed by, but not limited to, Novartis AG, Merck & Co., Inc., Bayer 
AG, AstraZeneca PLC and Bristol-Myers Squibb Company. Omecamtiv mecarbil may also compete with currently approved drugs, 
such as in the SGLT2 inhibitor class, that have either expanded or are planning to expand their labels to include treatment of patients 
with  heart  failure,  including  FORXIGA®  (dapagliflozin),  INVOKANA®  (canagliflozin),  and  JARDIANCE®  (empagliflozin).  The 
competitive  landscape  for  HFrEF  is  already  crowded  and  evolving  rapidly,  especially  given  the  addition  of  SGLT2  inhibitors  as 
AHA/ACC/HFSA guideline directed medical therapy for HFrEF. SGLT2 inhibitors have steadily gained market share over the previous 
two years. In addition, there are a number of medical devices both marketed and in development for the potential treatment of patients 
living with heart failure.

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We believe that our ability to successfully compete will depend on, among other things:

•

•

•

•

•

•

•

•

•

•

efficacy, safety and reliability of omecamtiv mecarbil, both alone and in combination with other therapies;

in the U.S., the ability to fund and successfully complete an additional confirmatory phase 3 clinical trial of omecamtiv 
mecarbil in HFrEF and resolve to the satisfaction of FDA the other deficiencies stipulated in the CRL we received in response 
to our initial NDA submission for omecamtiv mecarbil;

in  the  E.U.  and  other  jurisdictions  outside  of  the  U.S.,  the  timing  and  scope  of  regulatory  approval  by  EMA  and  other 
regulatory bodies;

our ability to manufacture and sell commercial quantities of omecamtiv mecarbil product to the market;

our  ability  to  successfully  commercialize  omecamtiv  mecarbil  and  secure  coverage  and  adequate  reimbursement  with 
affordable patient copay in approved indications;

product acceptance by physicians and other health care providers;

if required in connection to regulatory approval by FDA, EMA and/or other regulatory authorities, the availability of an 
antibody-based immunoassay to timely and properly perform blood tests for omecamtiv mecarbil concentration levels on 
patients to whom omecamtiv mecarbil is prescribed;

price competition, particularly of generic products;

protection of our intellectual property, including our ability to enforce our intellectual property rights against potential generic 
competition; and

the availability of substantial capital resources to fund development and commercialization activities.

Intellectual Property Resources

Our  policy  is  to  seek  patent  protection  for  the  technologies,  inventions  and  improvements  that  we  develop  that  we  consider 
important to the advancement of our business. As of December 31, 2023, we owned, co-owned or licensed 76 issued U.S. patents, over 
700 issued patents in various foreign jurisdictions, and over 480 additional pending U.S. and foreign patent applications. We also rely 
on trade secrets, technical know-how and continuing innovation to develop and maintain our competitive position. Our commercial 
success will depend on obtaining and maintaining patent protection and trade secret protection for our drug candidates and technologies 
and  our  successfully  defending  these  patents  against  third-party  challenges.  We  will  only  be  able  to  protect  our  technologies  from 
unauthorized use by third parties to the extent that valid and enforceable patents cover them or we maintain them as trade secrets.

We have a U.S. patent covering aficamten, which expires in 2039 unless extended or otherwise adjusted. We also have a U.S. 
patent  covering  omecamtiv  mecarbil,  which  expires  in  2027,  inclusive  of  605  days  of  Patent  Term  Adjustment,  unless  extended  or 
otherwise adjusted. A recent U.S. Federal Circuit decision could have implications for patents whose expiration dates include Patent 
Term Adjustment, including the U.S. patent covering omecamtiv mecarbil. The implications of this decision may lead to loss of the 
portion  of  the  patent  term  that  is  due  to  Patent  Term  Adjustment.  We  also  have  issued  patents  in  various  foreign  jurisdictions  and 
additional U.S. and foreign patent applications pending for these drug candidates. It is not known or determinable whether other patents 
will issue from any of our other pending applications or what the expiration dates would be for any other patents that do issue.

In relation to our collaborations, our partners may develop or have developed, solely or with us, intellectual property rights in 
connection with our drug candidates. Our collaboration agreements generally contain provisions regarding ownership, prosecution and 
maintenance, assignment and license rights to enable us to protect and benefit from intellectual property rights that are developed with 
or by our partners. 

Our drug candidates are still in clinical development and have not yet been approved by the FDA. If any of these drug candidates 
are approved, then pursuant to federal law, we may apply for an extension of the U.S. patent term for one patent covering the approved 
drug, which could extend the term of the applicable patent by up to a maximum of five additional years.

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The degree of future protection of our proprietary rights is uncertain because legal means may not adequately protect our rights 
or  permit  us  to  gain  or  keep  our  competitive  advantage.  Due  to  evolving  legal  standards  relating  to  the  patentability,  validity  and 
enforceability of patents covering pharmaceutical inventions and the claim scope of these patents, our ability to enforce our existing 
patents and to obtain and enforce patents that may issue from any pending or future patent applications is uncertain and involves complex 
legal, scientific and factual questions. The standards that the U.S. Patent and Trademark Office and its foreign counterparts use to grant 
patents are not always applied predictably or uniformly and are subject to change. To date, no consistent policy has emerged regarding 
the breadth of claims allowed in biotechnology and pharmaceutical patents. Thus, we cannot be sure that any patents will issue from 
any pending or future patent applications owned by, co-owned by, or licensed to us. Even if patents do issue, we cannot be sure that the 
claims  of  these  patents  will  be  held  valid  or  enforceable  by  a  court  of  law,  will  provide  us  with  any  significant  protection  against 
competitive products, or will afford us a commercial advantage over competitive products. For example:

• we or our licensors might not have been the first to make the inventions covered by each of our pending patent applications 

or issued patents;

• we or our licensors might not have been the first to file patent applications for the inventions covered by our pending patent 

applications or issued patents;

•

•

•

•

others may independently develop similar or alternative technologies or duplicate any of our technologies without infringing 
our intellectual property rights;

some or all of our or our licensors’ pending patent applications may not result in issued patents or the claims that issue may 
be narrow in scope and not provide us with competitive advantages;

our and our licensors’ issued patents may not provide a basis for commercially viable drugs or therapies or may be challenged 
and invalidated by third parties;

our  or  our  licensors’  patent  applications  or  patents  may  be  subject  to  interference,  post-grant  proceedings,  derivation, 
reexamination, inter partes review, opposition or similar legal and administrative proceedings that may result in a reduction 
in their scope or their loss altogether;

• we may not develop additional proprietary technologies or drug candidates that are patentable; or

•

the patents of others may prevent us or our partners from discovering, developing or commercializing our drug candidates.

The defense and prosecution of intellectual property infringement suits, interferences, post-grant proceedings, oppositions and 
related legal and administrative proceedings are costly, time-consuming to pursue and divert resources. The outcome of these types of 
proceedings is uncertain and could significantly harm our business. For example, an unknown third party has filed an opposition against 
a granted European patent relating to compositions of omecamtiv mecarbil. Although we are defending the patent, we cannot be certain 
that  the  patent  will  be  upheld  as  valid.  If  our  European  patent  is  invalidated,  our  intellectual  property  position  in  Europe  could  be 
weakened and it could have a negative impact on our business.

Our ability to commercialize drugs depends on our ability to use, manufacture and sell those drugs without infringing the patents 
or other proprietary rights of third parties. U.S. and foreign issued patents and pending patent applications owned by third parties exist 
that may be relevant to the therapeutic areas and chemical compositions of our drug candidates. While we are aware of certain relevant 
patents and patent applications owned by third parties, there may be issued patents or pending applications of which we are not aware 
that could cover our drug candidates. Because patent applications are often not published immediately after filing, there may be currently 
pending applications, unknown to us, which could later result in issued patents that our activities with our drug candidates could infringe.

The  development  of  our  drug  candidates  and  the  commercialization  of  any  resulting  drugs  may  be  impacted  by  patents  of 
companies engaged in competitive programs with significantly greater resources. This could result in the expenditure of significant legal 
fees and management resources.

We also rely on trade secrets to protect our technology, especially where we do not believe patent protection is appropriate or 
obtainable. However, trade secrets are often difficult to protect, especially outside of the United States. While we believe that we use 
reasonable efforts to protect our trade secrets, our employees, consultants, contractors, partners and other advisors may unintentionally 
or willfully disclose our trade secrets to competitors. Enforcing a claim that a third party had illegally obtained and is using our trade 
secrets would be expensive and time-consuming, and the outcome would be unpredictable. Even if we are able to maintain our trade 
secrets as confidential, our competitors may independently develop information that is equivalent or similar to our trade secrets.

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We seek to protect our intellectual property by requiring our employees, consultants, contractors and other advisors to execute 
nondisclosure and invention assignment agreements upon commencement of their employment or engagement, through which we seek 
to protect our intellectual property. Agreements with our employees also preclude them from bringing the proprietary information or 
materials of third parties to us. We also require confidentiality agreements or material transfer agreements from third parties that receive 
our confidential information or materials.

For  further  details  on  the  risks  relating  to  our  intellectual  property,  please  see  the  risk  factors  under  Item  1A  of  this  report, 
including,  but  not  limited  to,  the  risk  factors  entitled  “Our  success  depends  substantially  upon  our  ability  to  obtain  and  maintain 
intellectual property protection relating to our drug candidates and research technologies” and “If we are sued for infringing third-party 
intellectual property rights, it will be costly and time-consuming, and an unfavorable outcome would have a significant adverse effect 
on our business.”

Compliance with Government Regulation 

The  FDA  and  comparable  regulatory  agencies  in  state  and  local  jurisdictions  and  in  foreign  countries  impose  substantial 
requirements upon the clinical development, manufacture, marketing and distribution of drugs. These agencies and other federal, state 
and local entities regulate research and development activities and the testing, manufacture, quality control, labeling, storage, record 
keeping, approval, advertising and promotion of our drug candidates and drugs.

In the United States, the FDA regulates drugs under the Federal Food, Drug and Cosmetic Act and implementing regulations. 

The process required by the FDA before our drug candidates may be marketed in the United States generally involves the following:

•

•

•

•

•

•

completion  of  extensive  preclinical  laboratory  tests,  preclinical  animal  studies  and  formulation  studies,  all  performed  in 
accordance with the FDA’s good laboratory practice regulations;

submission to the FDA of an IND, which must become effective before clinical trials may begin;

performance of adequate and well-controlled clinical trials to establish the safety and efficacy of the drug candidate for each 
proposed indication in accordance with GCP;

submission of a NDA to the FDA, which must usually be accompanied by payment of a substantial user fee;

satisfactory completion of an FDA preapproval inspection of the manufacturing facilities at which the product is produced 
to assess compliance with cGMP regulations and FDA audits of select clinical investigator sites to assess compliance with 
GCP; and

FDA review and approval of the NDA prior to any commercial marketing, sale or shipment of the drug.

Similar regulatory procedures generally apply in countries outside of the United States. This testing and approval process requires 
substantial time, effort and financial resources, and we cannot be certain that any approvals for our drug candidates will be granted on 
a timely basis, if at all.

Non-clinical tests include laboratory evaluation of product chemistry, formulation and stability, and studies to evaluate toxicity 
and pharmacokinetics in animals. The results of non-clinical tests, together with manufacturing information and analytical data, are 
submitted as part of an IND application to the FDA. The IND automatically becomes effective 30 days after receipt by the FDA, unless 
the FDA, within the 30-day period, raises concerns or questions about the conduct of the proposed clinical trial, including concerns that 
human research subjects may be exposed to unreasonable health risks. In such a case, the IND sponsor and the FDA must resolve any 
outstanding concerns before the clinical trial can begin. Our submission of an IND or a foreign equivalent, or those of our collaborators, 
may not result in authorization from the FDA or its foreign equivalent to commence a clinical trial. A separate submission to an existing 
IND must also be made for each successive clinical trial conducted during product development. Further, an independent IRB or its 
foreign equivalent for each medical center proposing to conduct the clinical trial must review and approve the plan for any clinical trial 
before it commences at that center and it must monitor the clinical trial until completed. The FDA, the IRB or their foreign equivalents, 
or the clinical trial sponsor may suspend a clinical trial at any time on various grounds, including a finding that the subjects or patients 
are being exposed to an unacceptable health risk.

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Clinical Trials.  For purposes of an NDA or equivalent submission and approval, clinical trials are typically conducted in the 

following three sequential phases, which may overlap:

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•

•

Phase 1: Phase 1 trials include the initial introduction of a drug candidate into humans. These studies may be conducted in 
patients, but are usually conducted in healthy volunteer subjects. These studies are designed to determine the metabolic and 
pharmacologic actions of the drug candidate in humans, the side effects associated with increasing doses, and, if possible, to 
gain early evidence on effectiveness. 

Phase  2:  Phase  2  trials  include  the  early  controlled  clinical  studies  conducted  to  obtain  some  preliminary  data  on  the 
effectiveness of the drug candidate for a particular indication or indications in patients with the disease or condition. This 
phase of testing also helps determine the common short-term side effects and risks associated with the drug candidate. These 
clinical trials are generally conducted in a limited patient population to identify possible adverse effects and safety risks, to 
make an initial determination of potential efficacy of the drug candidate for specific targeted indications and to determine 
dose tolerance and optimal dosage. Multiple Phase 2 clinical trials may be conducted by the sponsor to obtain information 
prior to beginning larger and more expensive Phase 3 clinical trials. Phase 2a clinical trials generally are designed to study 
the pharmacokinetic or pharmacodynamic properties and to conduct a preliminary assessment of safety of the drug candidate 
over a measured dose response range. In some cases, a sponsor may decide to conduct a Phase 2b clinical trial, which is a 
second, typically larger, confirmatory Phase 2 trial that could, if positive and accepted by a regulatory authority, support 
approval of a drug candidate.

Phase  3:  Phase  3  clinical  trials  are  then  undertaken  in  large  patient  populations  to  further  evaluate  dosage,  to  provide 
substantial evidence of clinical efficacy and to further test for safety in an expanded and diverse patient population at multiple, 
geographically dispersed clinical trial sites. Phase 3 trials are also intended to provide an adequate basis for extrapolating the 
results to the general population and transmitting that information in the drug labeling. Phase 3 studies usually include several 
hundred to several thousand people, and are usually longer in duration than Phase 2 trials.

At any time during the conduct of a clinical trial, the FDA or a foreign equivalent can impose a clinical hold on the trial if it 
believes the trial is unsafe or that the protocol is clearly deficient in design in meeting its stated objectives, which requires the conduct 
of the trial to cease until the clinical hold is removed. In some cases, the FDA or foreign equivalent may condition approval of marketing 
approval for a drug candidate on the sponsor’s agreement to conduct additional clinical trials to further assess the drug’s safety and 
effectiveness after marketing approval, known as Phase 4 clinical trials.

The clinical trials we conduct for our drug candidates, both before and after approval, and the results of those trials, are generally 
required to be included in a clinical trials registry database that is available and accessible to the public via the internet. A failure by us 
to properly participate in the clinical trial database registry could subject us to significant civil monetary penalties.

Health  care  providers  in  the  United  States,  including  research  institutions  from  which  we  or  our  partners  obtain  patient 
information,  are  subject  to  privacy  rules  under  the  Health  Insurance  Portability  and  Accountability  Act  of  1996  and  state  and  local 
privacy laws. In the E.U., these entities are subject to the Directive 95/46-EC of the European Parliament on the protection of individuals 
with regard to the processing of personal data and individual E.U. member states implementing additional legislation. The General Data 
Protection Regulation (E.U.) 2016/679 is a regulation in E.U. law on data protection and privacy for all individuals within the E.U. and 
the EEA. Other countries have similar privacy legislation. We could face substantial penalties if we knowingly receive individually 
identifiable health information from a health care provider that has not satisfied the applicable privacy laws. In addition, certain privacy 
laws and genetic testing laws may apply directly to our operations and/or those of our partners and may impose restrictions on the use 
and dissemination of individuals’ health information and use of biological samples.

New Drug/Marketing Approval Application.  The results of drug candidate development, preclinical testing and clinical trials are 
submitted to the FDA as part of an NDA. The NDA also must contain extensive manufacturing information. In addition, the FDA may 
require that a proposed REMS, be submitted as part of the NDA if the FDA determines that it is necessary to ensure that the benefits of 
the drug outweigh its risks. Similar, and in some cases additional, requirements apply in foreign jurisdictions for marketing approval 
applications  for  drugs  in  those  jurisdictions.  The  FDA  may  refer  the  NDA  to  an  advisory  committee  for  review,  evaluation  and 
recommendation as to whether the application should be approved. The FDA often, but not always, follows the advisory committee’s 
recommendations. The FDA may also require preapproval inspections of manufacturing operations and clinical trial sites during the 
course of NDA review, and findings arising from any of these inspections may delay or prevent the approval of the NDA. The FDA 
may deny approval of an NDA by issuing a CRL if the applicable regulatory criteria are not satisfied, or it may require additional clinical 
data, including data in a pediatric population, or an additional Phase 3 clinical trial or impose other conditions that must be met in order 
to secure final approval for an NDA.

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Even if such data are submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval. Data 
from clinical trials are not always conclusive and the FDA may interpret data differently than we or our partners do. Once issued, the 
FDA or foreign equivalent may withdraw a drug approval if ongoing regulatory requirements are not met or if safety problems occur 
after the drug reaches the market. In addition, the FDA or its foreign counterparts may require further testing, including Phase 4 clinical 
trials, and surveillance or restrictive distribution programs to monitor the effect of approved drugs which have been commercialized. 
The FDA and its foreign counterparts have the power to prevent or limit further marketing of a drug based on the results of these post-
marketing programs. Drugs may be marketed only for the approved indications and in accordance with the provisions of the approved 
label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off-label uses, and a company 
that is found to have improperly promoted off-label may be subject to significant liability. However, physicians may, in their independent 
medical judgment, prescribe legally available products for off-label uses. The FDA does not regulate the behavior of physicians in their 
choice of treatments but the FDA does restrict manufacturer’s communications on the subject of off-label use of their products. Further, 
if there are any modifications to a drug, including changes in indications, labeling or manufacturing processes or facilities, we may be 
required to submit and obtain prior FDA approval of a new NDA or NDA supplement, or the foreign equivalent, which may require us 
to develop additional data or conduct additional preclinical studies and clinical trials.

Satisfaction of FDA regulations and requirements or similar regulations and requirements of state, local and foreign regulatory 
agencies typically takes several years. The actual time required may vary substantially based upon the type, complexity and novelty of 
the drug candidate or disease. Government regulation may delay or prevent marketing of drug candidates for a considerable period of 
time  and  impose  costly  procedures  upon  our  activities.  The  FDA  or  any  other  regulatory  agency  may  not  grant  approvals  for  new 
indications for our drug candidates on a timely basis, if at all. Even if a drug candidate receives regulatory approval, the approval may 
be significantly limited to specific disease states, patient populations and dosages or restrictive distribution programs. Further, even after 
regulatory approval is obtained, later discovery of previously unknown problems with a drug may result in restrictions on the drug or 
even complete withdrawal of the drug from the market. Delays in obtaining, or failures to obtain, regulatory approvals for any of our 
drug candidates would harm our business. In addition, we cannot predict what future U.S. or foreign governmental regulations may be 
implemented.

Orphan Drug Designation.  Some jurisdictions, including the United States, may designate drugs for relatively small patient 
populations as orphan drugs. The FDA grants orphan drug designation to drugs intended to treat a rare disease or condition, which is 
generally a disease or condition that affects fewer than 200,000 individuals in the United States. 

An FDA orphan drug designation does not shorten the duration of the regulatory review and approval process. If a drug candidate 
that has an orphan drug designation receives the first FDA marketing approval for the indication for which the designation was granted, 
then the approved drug is entitled to orphan drug exclusivity. This means that the FDA may not approve another company’s application 
to market the same drug for the same indication for a period of seven years, except in certain circumstances, such as a showing of clinical 
superiority to the drug with orphan exclusivity or if the holder of the orphan drug designation cannot assure the availability of sufficient 
quantities  of  the  orphan  drug  to  meet  the  needs  of  patients  with  the  disease  or  condition  for  which  the  designation  was  granted. 
Competitors may receive approval of different drugs or biologics for the indications for which the orphan drug has exclusivity.

Special Protocol Assessment.  A sponsor may request an SPA agreement with FDA on the Phase 3 clinical trial protocol design 
and analysis that will form the primary basis of an efficacy claim. Even if the FDA agrees to the design, execution and analyses proposed 
in protocols reviewed under the SPA process, the FDA may revoke or alter its agreement if public health concerns emerge that were 
unrecognized at the time of the SPA agreement, or a substantial scientific issue essential to determining safety or efficacy is identified 
after testing has begun. An SPA does not guarantee that an NDA will be approved.

Other Regulatory Requirements.  Any drugs manufactured or distributed by us or our partners pursuant to FDA approvals or their 
foreign counterparts are subject to continuing regulation by the applicable regulatory authority, including recordkeeping requirements 
and reporting of adverse experiences associated with the drug. Drug manufacturers and their subcontractors are required to register their 
establishments with the FDA and other applicable regulatory authorities, and are subject to periodic unannounced inspections by these 
regulatory authorities for compliance with ongoing regulatory requirements, including cGMPs, which impose certain procedural and 
documentation requirements upon us and our third-party manufacturers. Failure to comply with the statutory and regulatory requirements 
can  subject  a  manufacturer  to  possible  legal  or  regulatory  action,  such  as  warning  letters,  suspension  of  manufacturing,  seizure  of 
product, injunctive action or possible civil penalties. We cannot be certain that we or our present or future third-party manufacturers or 
suppliers will be able to comply with the cGMP regulations and other ongoing FDA and other regulatory requirements. If our present 
or future third-party manufacturers or suppliers are not able to comply with these requirements, the FDA or its foreign counterparts may 
halt our or our partners’ clinical trials, require us to recall a drug from distribution, or withdraw approval of the NDA for that drug.

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For further details on the risks relating to government regulation of our business, please see the risk factors under Item 1A of this 
report, including, but not limited to, the risk factor entitled “The regulatory approval process is expensive, time-consuming and uncertain 
and may prevent our partners or us from obtaining approvals to commercialize some or all of our drug candidates.”

Other Healthcare Laws.  We are currently or will in the future be subject to healthcare regulation and enforcement by the federal 
government  and  the  states  in  which  we  will  conduct  our  business  once  our  product  candidates  are  approved  by  the  FDA  and 
commercialized in the United States. In addition to the FDA’s restrictions on marketing of pharmaceutical products, the U.S. healthcare 
laws and regulations that may affect our ability to operate include: the federal fraud and abuse laws, including the federal anti-kickback 
and false claims laws; federal data privacy and security laws; and federal transparency laws related to payments and/or other transfers 
of  value  made  to  physicians  and  other  healthcare  professionals  and  teaching  hospitals.  Such  federal  and  state  healthcare  laws  and 
regulations, including, but are not limited to, the following:

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•

•

•

•

The federal healthcare anti-kickback statute prohibits, among other things, persons from knowingly and willfully soliciting, 
offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward either the referral 
of an individual for, or the purchase, order or recommendation of, any good or service, for which payment may be made 
under federally funded healthcare programs such as Medicare and Medicaid. This statute has been broadly interpreted to 
apply  to  manufacturer  arrangements  with  prescribers,  purchasers  and  formulary  managers,  among  others.  Several  other 
countries, including the United Kingdom, have enacted similar anti-kickback, fraud and abuse, and healthcare laws and 
regulations. 

The federal false claims laws, including the False Claims Act, which can be enforced through whistleblower or qui tam 
actions, imposes penalties against individuals or entities for knowingly presenting, or causing to be presented, to the federal 
government, claims for payment that are false or fraudulent or making a false statement to avoid, decrease or conceal an 
obligation to pay money to the federal government. The government and qui tam relators have brought False Claims Act 
actions against pharmaceutical companies on the theory that their practices have caused false claims to be submitted to the 
government.  

HIPAA imposes criminal and civil liability for executing a scheme to defraud any healthcare benefit program. HIPAA also 
imposes  obligations,  including  mandatory  contractual  terms,  with  respect  to  safeguarding  the  privacy,  security  and 
transmission  of  individually  identifiable  health  information.  HIPAA  also  imposes  criminal  liability  for  knowingly  and 
willfully falsifying, concealing or covering up a material fact or making any materially false statement in connection with 
the delivery of or payment for healthcare benefits, items or services. 

In  addition,  HIPAA,  as  amended  by  Health  Information  Technology  for  Economic  and  Clinical  Health  Act  of  2009 
(“HITECH”), imposes certain requirements on covered entities, which include certain healthcare providers, health plans 
and healthcare clearinghouses, and their business associates and covered subcontractors that receive or obtain protected 
health information in connection with providing a service on behalf of a covered entity relating to the privacy, security and 
transmission of individually identifiable health information.

The federal Physician Payments Sunshine Act requires manufacturers of drugs, devices, biologics and medical supplies to 
report  to  the  HHS  information  related  to  payments  and  other  transfers  of  value  made  to  or  at  the  request  of  physicians 
(defined to include doctors, dentists, optometrists, podiatrists and chiropractors), other health care professionals (such as 
physician  assistants  and  nurse  practitioners),  and  teaching  hospitals,  as  well  as  information  regarding  ownership  and 
investment interests held by physicians and their immediate family members. Payments made to physicians and research 
institutions for clinical trials are included within the ambit of this law.

Many  states  have  similar  laws  and  regulations  that  may  differ  from  each  other  and  federal  law  in  significant  ways,  thus 
complicating  compliance  efforts.  For  example,  states  have  anti-kickback  and  false  claims  laws  that  may  be  broader  in  scope  than 
analogous  federal  laws  and  may  apply  regardless  of  payor.  In  addition,  state  data  privacy  laws  that  protect  the  security  of  health 
information may differ from each other and may not be preempted by federal law. Moreover, several states have enacted legislation 
requiring pharmaceutical manufacturers to, among other things, establish marketing compliance programs, file periodic reports with the 
state,  make  periodic  public  disclosures  on  sales  and  marketing  activities,  report  information  related  to  drug  pricing,  require  the 
registration of sales representatives, and prohibit certain other sales and marketing practices. If our operations are found to be in violation 
of these laws, we may be subject to significant civil, criminal, and administrative penalties, including, without limitation, damages, 
fines, imprisonment, exclusion from participation in government healthcare programs, additional reporting obligations and oversight if 
we become subject to a corporate integrity agreement or other agreement to resolve allegations of non-compliance with these laws, and 
the curtailment or restructuring of our operations, any of which could adversely affect our ability to operate our business and our results 
of operations.

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Health  Care  Reform.    Additionally,  in  the  United  States  and  some  foreign  jurisdictions  there  have  been,  and  continue  to  be, 
several legislative and regulatory changes and proposed reforms of the healthcare system in an effort to contain costs, improve quality, 
and expand access to care. These reform initiatives may, among other things, result in modifications to the aforementioned laws and/or 
the  implementation  of  new  laws  affecting  the  healthcare  industry.  In  particular,  in  March  2010,  the  ACA,  was  enacted,  which 
substantially changed the way health care is financed by both governmental and private insurers, and continues to significantly impact 
the U.S. pharmaceutical industry. Similarly, a significant trend in the healthcare industry is cost containment. Third-party payors have 
attempted to control costs by limiting coverage and the amount of reimbursement for particular medications. Moreover, in the United 
States, there have been several recent Congressional inquiries, presidential executive orders and proposed and enacted federal and state 
legislation  designed  to,  among  other  things,  bring  more  transparency  to  drug  pricing,  review  the  relationship  between  pricing  and 
manufacturer patient programs, and reform government program reimbursement methodologies for drugs. For example, in August 2022, 
the IRA was signed into law, which, among other things, includes prescription drug provisions that may impact product pricing including 
the potential for net price reductions and/or the ability to increase price beyond the level of inflation over the lifecycle of our products, 
and/or may increase our rebate obligation to Medicare. Provisions include a requirement that the HHS negotiate drug prices for single-
source brand-name drugs and biologics that are among the 50 drugs with the highest total Medicare Part D spending. The law establishes 
a maximum fair price, outlines the process by which the Secretary of HHS will identify drugs for negotiations, and establishes non-
compliance penalties for manufacturers. The Act implements inflation rebates in Medicare when a drug’s Average Manufacturer Price 
(AMP, in Part D) or Average Sale Price (ASP, in Part B) rises faster than the inflation index (CPI-U). In addition, the Part D drug benefit 
caps  beneficiary  spending  at  $2,000,  eliminates  the  coverage  gap  for  patients,  and  modifies,  beginning  in  2025,  liabilities  for  drug 
manufacturers by replacing the 70% discount in the Coverage gap with a 10% discount in the Initial Coverage phase and a 20% discount 
in the Catastrophic phase. The IRA permits HHS to implement many of these provisions through guidance, as opposed to regulation, 
for the initial years. These provisions take effect progressively starting in fiscal year 2023. On August 29, 2023, HHS announced the 
list of the first ten drugs that will be subject to price negotiations, although the Medicare drug price negotiation program is currently 
subject to legal challenges. In response to the Biden administration’s October 2022 executive order, on February 14, 2023, HHS released 
a  report  outlining  three  new  models  for  testing  by  the  Centers  for  Medicare  &  Medicaid  Services  Innovation  Center  which  will  be 
evaluated on their ability to lower the cost of drugs, promote accessibility, and improve quality of care. It is unclear whether the models 
will be utilized in any health reform measures in the future. Further, on December 7, 2023, the Biden administration announced an 
initiative to control the price of prescription drugs through the use of march-in rights under the Bayh-Dole Act. On December 8, 2023, 
the National Institute of Standards and Technology published for comment a Draft Interagency Guidance Framework for Considering 
the Exercise of March-In Rights which for the first time includes the price of a product as one factor an agency can use when deciding 
to exercise march-in rights. While march-in rights have not previously been exercised, it is uncertain if that will continue under the new 
framework.  At  the  state  level,  legislatures  have  increasingly  passed  legislation  and  implemented  regulations  designed  to  control 
pharmaceutical and biological product pricing, including price or patient reimbursement constraints, discounts, restrictions on certain 
product  access  and  marketing  cost  disclosure  and  transparency  measures,  and,  in  some  cases,  to  encourage  importation  from  other 
countries and bulk purchasing. For example, on January 5, 2024, the FDA approved Florida’s Section 804 Importation Program (SIP) 
proposal to import certain drugs from Canada for specific state healthcare programs. It is unclear how this program will be implemented, 
including which drugs will be chosen, and whether it will be subject to legal challenges in the United States or Canada. Other states 
have also submitted SIP proposals that are pending review by the FDA. Any such approved importation plans, when implemented, may 
result in lower drug prices for products covered by those programs.

Coverage and Reimbursement.  Our ability to commercialize any of our products successfully will depend in part on the extent 
to which coverage and adequate reimbursement for these products and will be available from third-party payors. Even if we obtain 
coverage  for  a  given  drug  product,  the  associated  reimbursement  rate  may  not  be  adequate  to  cover  our  costs,  including  research, 
development,  intellectual  property,  manufacture,  sale  and  distribution  expenses,  or  may  require  co-payments  that  patients  find 
unacceptably high. Coverage and reimbursement policies for drug products can differ significantly from payor to payor as there is no 
uniform policy of coverage and reimbursement for drug products among third-party payors in the U.S. Reimbursement by a third-party 
payor  may  depend  upon  a  number  of  factors,  including  the  third-party  payor’s  determination  that  a  product  is  safe,  effective  and 
medically necessary; and neither cosmetic, experimental nor investigational. To support securing coverage and reimbursement for any 
product that might be approved for sale, we may need to conduct expensive pharmacoeconomic studies in order to demonstrate the 
medical  necessity  and  cost-effectiveness  of  our  approved  products.  There  may  be  significant  delays  in  obtaining  coverage  and 
reimbursement as the process of determining coverage and reimbursement is often time-consuming and costly. Further, coverage policies 
and third party reimbursement rates may change at any time. Additionally, we or our partners may develop companion diagnostic tests 
for  use  with  our  product  candidates.  Companion  diagnostic  tests  require  coverage  and  reimbursement  separate  and  apart  from  the 
coverage and reimbursement for their companion pharmaceutical or biological products. Similar challenges to obtaining coverage and 
reimbursement, applicable to pharmaceutical products, will apply to companion diagnostics.

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Cytokinetics Human Capital

As of December 31, 2023, we had 423 employees and 141 consultants. 28 of those employees have more than 10 years tenure 
with us and 75 have over 5 years of service. In 2023, employee turnover was 10.6%, which we believe is a lower attrition rate compared 
to the industry. 

We  are  committed  to  fostering  and  maintaining  a  culture  that  engenders  collaboration  and  teamwork,  inclusion,  respect, 
transparency and candor. We provide our employees with an array of professional development resources and tools to support their 
learning, growth and development opportunities. We were honored to be recognized as a San Francisco Times Best Place to Work and 
Great Places to Work in 2023.

Our compensation and benefit programs are designed to enable us to attract and retain the best employees in a very competitive 
life science sector and regularly benchmark and survey the market to ensure we maintain competitive programs. In addition, we routinely 
survey our employees to measure engagement, identify and take action on opportunities for improvement, and share these results with 
employees. 

We have a rigorous annual goal setting and goal evaluation process under the supervision of our Board of Directors and senior 

management to assist our employees in understanding what is expected of them individually and as an organization.

We are going into our third year of implementing a Diversity, Equity, Inclusion and Respect program and are fully committed 
across all aspects of our organization including recruiting and hiring, development and promotion practices. Employees identifying as 
ethnic or racial minorities held 43% of director-level and above positions. Employees identifying as women held 43% of director-level 
and above positions.

Our Compensation and Talent Committee of the Board of Directors reviews employee engagement, reward programs, human 

resource metrics, including attrition, retention and staffing on an on-going basis.

Investor Information

We file electronically with the SEC our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on 
Form 8-K pursuant to Section 13 or 15(d) of the Exchange Act. The SEC maintains an Internet site that contains reports, proxy and 
information  statements,  and  other  information  regarding  issuers  that  file  electronically  with  the  SEC.  The  address  of  that  site  is 
www.sec.gov.

You may obtain a free copy of our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 
8-K and amendments to those reports on the day of filing with the SEC on our website at www.cytokinetics.com or by contacting the 
Investor Relations Department at our corporate offices by calling 650-624-3060. The information found on our website is not part of 
this or any other report filed with or furnished to the SEC.

ITEM 1A. RISK FACTORS 

In evaluating our business, you should carefully consider the following risks in addition to the other information in this report. 
Any  of  the  following  risks  could  materially  and  adversely  affect  our  business,  results  of  operations,  financial  condition  or  your 
investment in our securities, and many are beyond our control. The risks and uncertainties described below are not the only ones facing 
us. Additional risks and uncertainties not presently known to us, or that we currently see as immaterial, may also adversely affect our 
business.

Risks Specific to our Company in connection with our Research and Development Activities

The regulatory approval and marketing authorization process is expensive, time-consuming and uncertain and may prevent 
our partners or us from obtaining approvals to commercialize some or all of our drug candidates, including aficamten and 
omecamtiv mecarbil.

The research, testing, manufacturing, selling and marketing of drugs are subject to extensive regulation by the FDA and other 
regulatory authorities in the United States and other countries, and regulations differ from country to country. Neither we nor our partners 
are permitted to market our potential drugs in the United States until we receive approval of an NDA from the FDA. Neither we nor our 
partners have ever received NDA or other marketing approval for any of our drug candidates.

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Obtaining  NDA  approval  is  a  lengthy,  expensive  and  uncertain  process.  In  addition,  failure  to  comply  with  FDA  and  other 
applicable foreign and U.S. regulatory requirements may subject us to administrative or judicially imposed sanctions. These include 
warning  letters,  civil  and  criminal  penalties,  injunctions,  product  seizure  or  detention,  product  recalls,  total  or  partial  suspension  of 
production, and refusal to approve pending NDAs or supplements to approved NDAs.

Although we have announced positive results from SEQUOIA-HCM for aficamten and GALACTIC-HF for omecamtiv mecarbil, 
regulatory approval of an NDA or NDA supplement is never guaranteed, and the approval process typically takes several years and is 
extremely expensive. For example, our NDA for omecamtiv mecarbil for the treatment of HFrEF resulted in a CRL notwithstanding the 
fact that GALACTIC-HF met its primary efficacy endpoint. The FDA and foreign regulatory agencies also have substantial discretion 
in the drug approval process, and the guidance and advice issued by such agencies is subject to change at any time. Despite the time and 
efforts exerted, failure can occur at any stage, and we may encounter problems that cause us to abandon clinical trials or to repeat or 
perform additional preclinical testing and clinical trials. For example, the CRL we received from FDA in connection with our NDA for 
omecamtiv  mecarbil  stated  that  results  from  an  additional  clinical  trial  of  omecamtiv  mecarbil  are  required  to  establish  substantial 
evidence of effectiveness for the treatment of HFrEF, with benefits that outweigh the risks. The number and focus of preclinical studies 
and clinical trials that will be required for approval by the FDA and foreign regulatory agencies varies depending on the drug candidate, 
the disease or condition that the drug candidate is designed to address, and the regulations applicable to any particular drug candidate. 
In addition, the FDA may require that a proposed REMS be submitted as part of an NDA if the FDA determines that it is necessary to 
ensure that the benefits of the drug outweigh its risks. The FDA and foreign regulatory agencies can delay, limit or deny approval of a 
drug candidate for many reasons, including, but not limited to:

•

•

•

•

they might determine that a drug candidate is not safe or effective;

they might not find the data from non-clinical testing and clinical trials sufficient and could request that additional trials be 
performed;

they might not approve our, our partner’s or the contract manufacturer’s processes or facilities; or

they might change their approval policies or adopt new regulations.

Even if we receive regulatory approval to manufacture and sell a drug in a particular regulatory jurisdiction, other jurisdictions’ 
regulatory authorities may not approve that drug for manufacture and sale. Moreover, the refusal of one regulatory authority to approve 
one of our drug candidates may influence the decision-making of another regulatory authority in a different jurisdiction in a manner that 
is adverse to us. For example, FDA's recent CRL in response to our NDA for omecamtiv mecarbil may influence EMA to decline to 
approve our MAA for omecamtiv mecarbil in the E.U. or other regulatory authorities in other jurisdictions to decline to approve our 
potential marketing applications for omecamtiv mecarbil in such other jurisdictions.   

If we or our partners fail to receive and maintain regulatory approval for the sale of any drugs resulting from our drug candidates, 

it would significantly harm our business and negatively affect our stock price.

We received a CRL from FDA in response to our NDA for omecamtiv mecarbil. The CRL stated that results from an additional 
clinical trial of omecamtiv mecarbil are required to establish substantial evidence of effectiveness for the treatment of HFrEF, 
with benefits that outweigh the risks. No assurance can be given that we will be able to address any of the deficiencies noted 
in the CRL and/or obtain FDA approval of our NDA for omecamtiv mecarbil.

On February 28, 2023, we announced that we received a CRL from the FDA’s Division of Cardiology and Nephrology regarding 
our NDA for omecamtiv mecarbil for the treatment of HFrEF. According to the CRL, GALACTIC-HF is not sufficiently persuasive to 
establish substantial evidence of effectiveness for reducing the risk of heart failure events and cardiovascular death in adults with chronic 
heart failure with HFrEF, in lieu of evidence from at least two adequate and well-controlled clinical investigations. In addition, FDA 
stated that results from an additional clinical trial of omecamtiv mecarbil are required to establish substantial evidence of effectiveness 
for the treatment of HFrEF, with benefits that outweigh the risks. FDA’s decision to issue a CRL followed an FDA Cardiovascular and 
Renal Drugs Advisory Committee’s vote of 8 to 3 in December 2022 that the benefits of omecamtiv mecarbil do not outweigh its risks 
for the treatment of HFrEF. No assurance can be given that we will be able to address any of the deficiencies noted in the CRL and/or 
obtain FDA approval of our NDA for omecamtiv mecarbil.

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In 2023, we participated in a Type A meeting with FDA in order to understand FDA’s views regarding the CRL and what may 
be required to support potential approval of omecamtiv mecarbil in the United States, and subsequently submitted a formal dispute 
resolution  request  to  FDA,  with  the  objective  to  appeal  the  FDA's  conclusion,  as  stated  in  the  CRL,  that  substantial  evidence  of 
effectiveness had not been established to support approval of omecamtiv mecarbil. FDA subsequently denied our appeal in November 
2023 and reaffirmed its decision in the CRL that GALACTIC-HF is not sufficiently persuasive to establish substantial evidence of 
effectiveness for reducing the risk of heart failure events and cardiovascular death in adults with chronic heart failure with HFrEF, in 
lieu of evidence from at least two adequate and well-controlled clinical investigations.

Clinical  trials  may  fail  to  demonstrate  the  desired  safety  and  efficacy  of  our  drug  candidates,  which  could  prevent  or 
significantly delay completion of clinical development and regulatory approval.

Prior to receiving approval to commercialize any of our drug candidates, we or our partners must adequately demonstrate to the 
satisfaction of FDA and foreign regulatory authorities that the drug candidate is sufficiently safe and effective with substantial evidence 
from well-controlled clinical trials. We or our partners will need to demonstrate efficacy in clinical trials for the treatment of specific 
indications and monitor safety throughout the clinical development process and following approval. None of our drug candidates have 
yet met the safety and efficacy standards required for regulatory approval for commercialization and they may never do so. For example, 
the CRL we received on February 28, 2023 in connection to our NDA for omecamtiv mecarbil stated the results of GALACTIC-HF are 
not  sufficiently  persuasive  to  establish  substantial  evidence  of  effectiveness  for  reducing  the  risk  of  heart  failure  events  and 
cardiovascular death in adults with chronic heart failure with HFrEF, and on March 31, 2023, we announced the discontinuation of 
COURAGE-ALS, our Phase 3 clinical trial of reldesemtiv in patients with ALS, due to futility.

In  addition,  for  each  of  our  preclinical  compounds,  we  or  our  partners  must  adequately  demonstrate  satisfactory  chemistry, 
formulation, quality, stability and toxicity in order to submit an IND to the FDA, or an equivalent application in foreign jurisdictions, 
that would allow us to advance that compound into clinical trials. Furthermore, we or our partners may need to submit separate INDs 
(or  foreign  equivalent)  to  different  divisions  within  the  FDA  (or  foreign  regulatory  authorities)  in  order  to  pursue  clinical  trials  in 
different therapeutic areas. Each new IND (or foreign equivalent) must be reviewed by the new regulatory division before the clinical 
trial under its jurisdiction can proceed, entailing all the risks of delay inherent to regulatory review. If our or our partners’ current or 
future  preclinical  studies  or  clinical  trials  are  unsuccessful,  our  business  will  be  significantly  harmed  and  our  stock  price  could  be 
negatively affected.

All of our drug candidates are prone to the risks of failure inherent in drug development. Preclinical studies may not yield results 
that would adequately support the filing of an IND (or a foreign equivalent) with respect to our potential drug candidates. Even if the 
results of preclinical studies for a drug candidate are sufficient to support such a filing, the results of preclinical studies do not necessarily 
predict  the  results  of  clinical  trials.  As  an  example,  because  the  physiology  of  animal  species  used  in  preclinical  studies  may  vary 
substantially from other animal species and from humans, it may be difficult to assess with certainty whether a finding from a study in 
a particular animal species will result in similar findings in other animal species or in humans. For any of our drug candidates, the results 
from Phase 1 clinical trials in healthy volunteers and clinical results from Phase 1 and 2 trials in patients are not necessarily indicative 
of the results of later and larger clinical trials that are necessary to establish whether the drug candidate is safe and effective for the 
applicable indication. Likewise, interim results from a clinical trial may not be indicative of the final results from that trial, and results 
from early Phase 2 clinical trials may not be indicative of the results from later clinical trials.

In  addition,  while  the  clinical  trials  of  our  drug  candidates  are  designed  based  on  the  available  relevant  information,  such 
information may not accurately predict what actually occurs during the course of the trial itself, which may have consequences for the 
conduct of an ongoing clinical trial or for the eventual results of that trial. For example, the number of patients planned to be enrolled 
in a placebo-controlled clinical trial is determined in part by estimates relating to expected treatment effect and variability about the 
primary endpoint. These estimates are based upon earlier non-clinical and clinical studies of the drug candidate itself and clinical trials 
of other drugs thought to have similar effects in a similar patient population. If information gained during the conduct of the trial shows 
these estimates to be inaccurate, we may elect to adjust the enrollment accordingly, which may cause delays in completing the trial, 
additional expense or a statistical penalty to apply to the evaluation of the trial results.

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Furthermore, in view of the uncertainties inherent in drug development, such clinical trials may not be designed with focus on 
indications, patient populations, dosing regimens, endpoints, safety, efficacy or pharmacokinetic parameters or other variables that will 
provide the necessary safety or efficacy data to support regulatory approval to commercialize the resulting drugs. Clinical trials of our 
drug candidates are designed based on guidance or advice from regulatory agencies, which is subject to change during the development 
of the drug candidate at any time. Such a change in a regulatory agency’s guidance or advice may cause that agency to deem results 
from trials to be insufficient to support approval of the drug candidate and require further clinical trials of that drug candidate to be 
conducted. In addition, individual patient responses to the dose administered of a drug may vary in a manner that is difficult to predict. 
Also,  the  methods  we  select  to  assess  particular  safety,  efficacy  or  pharmacokinetic  parameters  may  not  yield  the  same  statistical 
precision in estimating our drug candidates’ effects as may other methodologies. Even if we believe the data collected from clinical 
trials  of  our  drug  candidates  are  promising,  these  data  may  not  be  sufficient  to  support  approval  by  the  FDA  or  foreign  regulatory 
authorities. Non-clinical and clinical data can be interpreted in different ways. Accordingly, the FDA or foreign regulatory authorities 
could interpret these data in different ways from us or our partners, which could delay, limit or prevent regulatory approval.

Furthermore,  while  planned  interim  analyses  in  clinical  trials  can  enable  early  terminations  for  futility  or  for  overwhelming 
efficacy,  the  timing,  which  can  be  based  on  accrual  of  events,  enrollment  or  other  factors,  and  the  results  of  such  analyses,  is 
unpredictable. 

Administering  any  of  our  drug  candidates  or  potential  drug  candidates  may  produce  undesirable  side  effects,  also  known  as 
adverse  events.  Toxicities  and  adverse  events  observed  in  preclinical  studies  for  some  compounds  in  a  particular  research  and 
development  program  may  also  occur  in  preclinical  studies  or  clinical  trials  of  other  compounds  from  the  same  program.  Potential 
toxicity issues may arise from the effects of the active pharmaceutical ingredient itself or from impurities or degradants that are present 
in the active pharmaceutical ingredient or could form over time in the formulated drug candidate or the active pharmaceutical ingredient. 
These toxicities or adverse events could delay or prevent the filing of an IND (or a foreign equivalent) with respect to our drug candidates 
or  potential  drug  candidates  or  cause  us,  our  partners  or  the  FDA  or  foreign  regulatory  authorities  to  modify,  suspend  or  terminate 
clinical trials with respect to any drug candidate at any time during the development program. Further, the administration of two or more 
drugs contemporaneously can lead to interactions between them, and our drug candidates may interact with other drugs that trial subjects 
are taking. If the adverse events are severe or frequent enough to outweigh the potential efficacy of a drug candidate, the FDA or other 
regulatory authorities could deny approval of that drug candidate for any or all targeted indications. Even if one or more of our drug 
candidates were approved for sale as drugs, the occurrence of even a limited number of adverse events or toxicities when used in large 
populations may cause the FDA or foreign regulatory authorities to impose restrictions on, or stop, the further marketing of those drugs. 
Indications of potential adverse events or toxicities which do not seem significant during the course of clinical trials may later turn out 
to actually constitute serious adverse events or toxicities when a drug is used in large populations or for extended periods of time.

We have observed certain adverse events in the clinical trials conducted with our drug candidates. Moreover, clinical trials of our 
drug candidates enroll patients who typically suffer from serious diseases which put them at increased risk of death. These patients may 
die while receiving our drug candidates. In such circumstances, it may not be possible to exclude with certainty a causal relationship to 
our drug candidate, even though the responsible clinical investigator may view such an event as not study drug-related.

Any failure or significant delay in completing preclinical studies or clinical trials for our drug candidates, or in receiving and 
maintaining regulatory approval for the sale of any resulting drugs, may significantly harm our business and negatively affect our stock 
price.

Our clinical trials, including FOREST-HCM, MAPLE-HCM and ACACIA-HCM, are expensive, time-consuming and may be 
subject to delay.

Clinical trials are subject to rigorous regulatory requirements and are very expensive, difficult and time-consuming to design and 
implement. The length of time and number of trial sites and patients required for clinical trials vary substantially based on the type, 
complexity, novelty, intended use of the drug candidate and safety concerns. Clinical trials of our current drug candidates can each 
continue  for  several  more  years.  However,  the  clinical  trials  for  all  or  any  of  our  drug  candidates  may  take  significantly  longer  to 
complete. In addition, as is the case for omecamtiv mecarbil given the CRL requirement to perform an additional Phase 3 clinical trial, 
the time and expense associated with an additional clinical trial may limit the commercial returns given the eventual loss of market 
exclusivity. The commencement and completion of our or our partners’ clinical trials could be delayed or prevented by many factors, 
including, but not limited to:

•

delays in obtaining, or inability to obtain, regulatory or other approvals to commence and conduct clinical trials in the manner 
we or our partners deem necessary for the appropriate and timely development of our drug candidates and commercialization 
of any resulting drugs;

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•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

delays  in  identifying  and  reaching  agreement,  or  inability  to  identify  and  reach  agreement,  on  acceptable  terms,  with 
prospective clinical trial sites and other entities involved in the conduct of our or our partners’ clinical trials;

delays or additional costs in developing, or inability to develop, appropriate formulations of our drug candidates for clinical 
trial use;

slower than expected rates of patient recruitment and enrollment;

for those drug candidates that are the subject of a strategic alliance, delays in reaching agreement with our partner as to 
appropriate development strategies;

a regulatory authority may require changes to a protocol for a clinical trial that then may require approval from regulatory 
agencies in other jurisdictions where the trial is being conducted;

a regulatory authority in one jurisdiction may not accept a clinical trial design that is acceptable in another jurisdiction;

an IRB or its foreign equivalent may require changes to a protocol that then require approval from regulatory agencies and 
other  IRBs  and  their  foreign  equivalents,  or  regulatory  authorities  may  require  changes  to  a  protocol  that  then  require 
approval from the IRBs or their foreign equivalents;

for clinical trials conducted in foreign countries, the time and resources required to identify, interpret and comply with foreign 
regulatory requirements or changes in those requirements, and political instability or natural disasters occurring in those 
countries;

lack of effectiveness of our drug candidates during clinical trials;

unforeseen safety issues;

inadequate supply, or delays in the manufacture or supply, of clinical trial materials;

uncertain dosing issues;

failure by us, our partners, or clinical research organizations, investigators or site personnel engaged by us or our partners to 
comply with good clinical practices and other applicable laws and regulations, including those concerning informed consent;

inability or unwillingness of investigators or their staffs to follow clinical protocols;

failure by our clinical research organizations, clinical manufacturing organizations and other third parties supporting our or 
our partners’ clinical trials to fulfill their obligations;

inability to monitor patients adequately during or after treatment;

introduction of new therapies or changes in standards of practice or regulatory guidance that render our drug candidates or 
their clinical trial endpoints obsolete; and

results from non-clinical studies that may adversely impact the timing or further development of our drug candidates.

We do not know whether planned clinical trials will begin on time, or whether planned or currently ongoing clinical trials will 
need  to  be  restructured  or  will  be  completed  on  schedule,  if  at  all.  Significant  delays  in  clinical  trials  will  impede  our  ability  to 
commercialize our drug candidates and generate revenue and could significantly increase our development costs.

If we encounter difficulties enrolling patients in our clinical trials, including FOREST-HCM, MAPLE-HCM and ACACIA-
HCM, our clinical development activities could be delayed or otherwise adversely affected.

The timely completion of clinical trials in accordance with their protocols depends, among other things, on our ability to enroll a 
sufficient number of patients who remain in the trial until its conclusion. We may experience difficulties in patient enrollment in clinical 
trials for a variety of reasons. The enrollment of patients depends on many factors, including:

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the patient eligibility criteria defined in the protocol;

the size of the patient population required for analysis of the trial’s primary endpoints;

the proximity of patients to study sites;

the design of the trial;

the ability to recruit clinical trial investigators with the appropriate competencies and experience;

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clinicians’ and patients’ perceptions as to the potential advantages of the product candidate being studied in relation to other 
available therapies or clinical trials, including any new drugs that may be approved for the indications we are investigating 
or clinical trial results;

the ability to obtain and maintain patient consents;

the risk that patients enrolled in clinical trials will drop out of the trials before completion.

In addition, our and our partners’ clinical trials will compete with other clinical trials for product candidates that are in the same 
therapeutic areas as our and our partners’ product candidates, and this competition will reduce the number and types of patients available 
to us, because some patients who might have opted to enroll in our or our partners’ trials may instead opt to enroll in a trial being 
conducted by one of our competitors. Since the number of qualified clinical investigators is limited, we expect to conduct some of our 
or our partners’ clinical trials at the same clinical trial sites that some of our competitors use, which will reduce the number of patients 
who are available for our clinical trials in such clinical trial site. 

Delays in patient enrollment may result in increased costs or may affect the timing or outcome of the planned clinical trials, 

which could prevent completion of these trials and adversely affect our and our partners’ ability to advance the development of 
product candidates.

The  failure  to  successfully  develop,  manufacture  and  obtain  regulatory  clearance  or  approval  of  an  antibody-based 
immunoassay for blood concentrations of omecamtiv mecarbil by Microgenics Corporation, a subsidiary of Thermo Fisher, 
could harm our development and commercialization strategy for omecamtiv mecarbil in key markets. In addition, if required 
by  FDA  and/or  EMA  as  part  of  any  approved  label  for  omecamtiv  mecarbil,  we  will  be  dependent  on  Microgenics  to 
manufacture and commercialize such an immunoassay in sufficient quantities in all key markets in which we may seek to 
commercialize omecamtiv mecarbil.

In connection with our NDA and our MAA for omecamtiv mecarbil, FDA and/or EMA may require that patients treated with 
omecamtiv mecarbil have their blood monitored during titration for concentrations of the drug in order to ensure optimized dosing that 
maximizes benefits without undue increased risk. We have recently contracted with Microgenics Corporation, a subsidiary of Thermo 
Fisher, to develop and eventually commercialize an antibody-based immunoassay for blood concentrations of omecamtiv mecarbil. The 
development,  manufacture  and  regulatory  approval  of  an  antibody-based  immunoassay,  however,  may  be  complex  and/or  time 
consuming. Such an immunoassay could require regulatory clearance by FDA as a companion diagnostic device or similar regulatory 
clearance by EMA, and there is no assurance that such regulatory clearance will be obtained. In addition, if required by FDA and/or 
EMA  as  part  of  any  approved  label  for  omecamtiv  mecarbil,  we  will  be  dependent  on  Microgenics  Corporation  to  successfully 
manufacture and commercialize its immunoassay in sufficient quantities in all key markets in which we may seek to commercialize 
omecamtiv mecarbil, failing which, our potential sales of omecamtiv mecarbil could be materially adversely affected.

We depend on CROs to conduct our clinical trials as well as other third parties to manufacture drug candidates for use in 
clinical trials and we have limited control over their performance. If these CROs do not successfully carry out their contractual 
duties or meet expected deadlines, or if we lose any of our CROs, we may not be able to obtain regulatory approval for or 
commercialize our product candidates on a timely basis, if at all.

We have used and intend to continue to use a limited number of CROs within and outside of the United States to conduct clinical 
trials of our drug candidates and related activities. We do not have control over many aspects of our CROs’ activities, and cannot fully 
control the amount, timing or quality of resources that they devote to our programs. CROs may not assign as high a priority to our 
programs or pursue them as diligently as we would if we were undertaking these programs ourselves. The activities conducted by our 
CROs therefore may not be completed on schedule or in a satisfactory manner. CROs may also give higher priority to relationships with 
our competitors and potential competitors than to their relationships with us. Outside of the United States, we are particularly dependent 
on our CROs’ expertise in communicating with clinical trial sites and regulatory authorities and ensuring that our clinical trials and 
related activities and regulatory filings comply with applicable laws.

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Our CROs’ failure to carry out development activities on our behalf as agreed and in accordance with our and the FDA’s or other 
regulatory agencies’ requirements and applicable U.S. and foreign laws, or our failure to properly coordinate and manage these activities, 
could increase the cost of our operations and delay or prevent the development, approval and commercialization of our drug candidates. 
In addition, if a CRO fails to perform as agreed, our ability to collect damages may be contractually limited. If we fail to effectively 
manage the CROs carrying out the development of our drug candidates or if our CROs fail to perform as agreed, the commercialization 
of our drug candidates will be delayed or prevented. In many cases, our CROs have the right to terminate their agreements with us in 
the  event  of  an  uncured  material  breach.  Identifying,  qualifying  and  managing  performance  of  third-party  service  providers  can  be 
difficult, time consuming and cause delays in our development programs. In addition, there is a natural transition period when a new 
CRO commences work and the new CRO may not provide the same type or level of services as the original provider. If any of our 
relationships with our third-party CROs terminate, we may not be able to enter into arrangements with alternative CROs or to do so 
timely or on commercially reasonable terms.

The mechanisms of action of certain of our drug candidates are unproven, and we do not know whether we will be able to 
develop any drug of commercial value.

We have discovered and develop drug candidates that have what we believe are novel mechanisms of action directed against 
cytoskeletal targets. The results we have seen for our compounds in preclinical models may not translate into similar results in humans, 
and results of early clinical trials in humans may not be predictive of the results of larger clinical trials that may later be conducted with 
our drug candidates. Even if we are successful in developing and receiving regulatory approval for a drug candidate for the treatment of 
a particular disease, we cannot be certain that it will be accepted by prescribers or be reimbursed by insurers or that we will also be able 
to develop and receive regulatory approval for that or other drug candidates for the treatment of other diseases. If we or our partners are 
unable to successfully develop and commercialize our drug candidates, our business will be materially harmed.

Moreover, in the event any of our competitors were to develop their own drug candidates that have a similar mechanism of action 
to any of our drug candidates and compounds, any efficacy or safety concerns identified during the development of such similar drug 
candidates may have an adverse impact on the development of our own drug candidates. For example, if a competitor's drug candidate 
having a similar mechanism of action as any of our own drug candidates is shown in clinical trials to give rise to serious safety concerns 
or have poor efficacy when administered to the target patient population, the FDA or other regulatory bodies may subject our drug 
candidates to increased scrutiny, leading to additional delays in development and potentially decreasing the chance of ultimate approval 
of our own drug candidates.

We  have  been  granted  orphan  designation  by  the  FDA  for  aficamten  for  the  potential  treatment  of  symptomatic  HCM; 
however, there can be no guarantee that we will receive approval for aficamten for this indication, nor that we will be able to 
prevent third parties from developing and commercializing products that are competitive to aficamten.

We have been granted orphan drug designation in the U.S. by the FDA for aficamten for the treatment of symptomatic HCM. In 
the U.S., upon approval from the FDA of an NDA, products granted orphan drug designation are generally provided with seven years 
of marketing exclusivity in the U.S., meaning the FDA will generally not approve applications for other product candidates that contain 
the same active ingredient for the same orphan indication. Even if we are the first to obtain approval of an orphan product and are 
granted such exclusivity in the U.S., there are limited circumstances under which a later competitor product may be approved for the 
same indication during the seven-year period of marketing exclusivity, such as if the later product is shown to be clinically superior to 
our product or due to an inability to assure a sufficient quantity of the orphan drug.

Orphan medicinal product status in the E.U. can provide up to 10 years of marketing exclusivity, meaning that another application 
for marketing authorization of a later similar medicinal product for the same therapeutic indication will generally not be approved in the 
E.U. Although we may have drug candidates that may obtain orphan drug exclusivity in Europe, the orphan approval and associated 
exclusivity period may be modified for several reasons, including a significant change to the orphan medicinal product designations or 
approval  criteria  after-market  authorization  of  the  orphan  product  (e.g.,  product  profitability  exceeds  the  criteria  for  orphan  drug 
designation), problems with the production or supply of the orphan drug or a competitor drug, although similar, is safer, more effective 
or otherwise clinically superior than the initial orphan drug.

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We are not guaranteed to maintain orphan status from the FDA for aficamten or to receive orphan status for aficamten for any 
other indication or for any of our other drug candidates for any indication. We are not guaranteed to be granted orphan designation in 
the E.U. for aficamten by the EMA. If our drug candidates that are granted orphan status were to lose their status as orphan drugs or the 
marketing exclusivity provided for them in the U.S. or the E.U., our business and results of operations could be materially adversely 
affected. While orphan status for any of our products, if granted or maintained, would provide market exclusivity in the U.S. and the 
E.U. for the time periods specified above, we would not be able to exclude other companies from manufacturing and/or selling products 
using the same active ingredient for the same indication beyond the exclusivity period applicable to our product on the basis of orphan 
drug status. Moreover, we cannot guarantee that another company will not receive approval before we do of an orphan drug application 
in the U.S. or the E.U. for a product candidate that has the same active ingredient or is a similar medicinal product for the same indication 
as  any  of  our  drug  candidates  for  which  we  plan  to  file  for  orphan  designation  and  status.  If  that  were  to  happen,  our  orphan  drug 
applications for our drug candidate for that indication may not be approved until the competing company’s period of exclusivity has 
expired in the U.S. or the E.U., as applicable. Further, application of the orphan drug regulations in the U.S. and Europe is uncertain, 
and we cannot predict how the respective regulatory bodies will interpret and apply the regulations to our or our competitors’ products.

We  have  been  granted  Breakthrough  Therapy  Designation  for  aficamten  by  the  FDA  and  we  may  seek  additional  special 
designations from regulatory authorities to expedite the review and approval process for our product candidates. However, 
these designations may not lead to a faster development or regulatory review or approval process, and it does not increase the 
likelihood that our product candidates will receive marketing approval.

We  have  been  granted  Breakthrough  Therapy  Designation  for  aficamten  for  oHCM  by  the  FDA  and  may  seek  these  and/or 
additional special designations from regulatory authorities to expedite the review and approval process for our product candidates. A 
breakthrough therapy is defined as a drug candidate that is intended, alone or in combination with one or more other products, to treat a 
serious or life-threatening disease or condition, and preliminary clinical evidence indicates that the product may demonstrate substantial 
improvement over existing therapies on one or more clinically important endpoints, such as substantial treatment effects observed early 
in clinical development. For products that have been designated as breakthrough therapies, interaction and communication between the 
FDA and the sponsor of the trial can help to identify the most efficient path for clinical development while minimizing the number of 
patients placed in ineffective control regimens. Drug candidates designated as breakthrough therapies by the FDA can also be eligible 
for accelerated approval. If a drug candidate is intended for the treatment of a serious or life-threatening condition and the product 
demonstrates the potential to address unmet medical needs for this condition, the drug candidate sponsor may apply for Fast Track 
Designation.

Fast Track Designation is an FDA process designed to facilitate the development and expedite the review of drugs to treat serious 
conditions and fill an unmet medical need. The purpose of the program is to make important new drugs available to the patient earlier. 
Filling an unmet medical need is defined as providing a therapy where none exists or providing a potential improvement upon the current 
standard of care. Once a drug candidate receives Fast Track Designation, early and frequent communication between the FDA and the 
sponsor  is  encouraged  throughout  the  entire  drug  development  and  review  process.  The  frequency  of  communication  assures  that 
questions and issues are resolved quickly, often leading to earlier drug approval and access by patients.

The FDA has broad discretion whether or not to grant these designations, so even if we believe a particular drug candidate is 
eligible for a particular designation, we cannot assure you that the FDA would decide to grant it. Accordingly, even if we believe one 
of our drug candidates meets the criteria for a designation, the FDA may disagree and instead determine not to make such designation. 
In any event, the receipt of a particular designation for a product candidate may not result in a faster development process, review or 
approval  compared  to  drug  candidates  considered  for  approval  under  conventional  FDA  procedures  and  does  not  assure  ultimate 
approval by the FDA. In addition, even if one or more of our drug candidates qualify as breakthrough therapies, the FDA may later 
decide that the products no longer meet the conditions for qualification and rescind the breakthrough designation. Further, the FDA may 
withdraw Fast Track Designation if it believes that the designation is no longer supported by data from a clinical development program.

If we are unable to maintain any existing Breakthrough Therapy Designation or Fast Track Designation or fail to secure such 
designation for any additional product candidates, this would have an adverse impact on our development timelines and our ability to 
obtain approval for and commercialize our product candidates.

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Disruptions at the FDA and other government agencies caused by funding shortages or global health concerns could hinder 
their ability to hire and retain key leadership and other personnel, or otherwise prevent new products and services from being 
developed or commercialized in a timely manner, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget 
and funding levels, ability to hire and retain key personnel and accept the payment of user fees, and statutory, regulatory, and policy 
changes.  Average  review  times  at  the  agency  have  fluctuated  in  recent  years  as  a  result.  In  addition,  government  funding  of  other 
government  agencies  that  fund  research  and  development  activities  is  subject  to  the  political  process,  which  is  inherently  fluid  and 
unpredictable.

Disruptions at the FDA and other agencies may also slow the time necessary for new drugs to be reviewed and/or approved by 
necessary government agencies, which would adversely affect our business. For example, over the last several years, including for 35 
days beginning on December 22, 2018, the U.S. government has shut down several times and certain regulatory agencies, such as the 
FDA, have had to furlough critical FDA employees and stop critical activities. If a prolonged government shutdown occurs, it could 
significantly impact the ability of the FDA to timely review and process our regulatory submissions, which could have a material adverse 
effect on our business.

Separately, in response to the global COVID-19 pandemic, the FDA had a period during which manufacturing inspections were 
not  conducted,  leading  to  delay,  and  has  resumed  on-site  inspections  of  domestic  manufacturing  facilities  subject  to  a  risk-based 
prioritization system. If a prolonged government shutdown occurs, or if global health concerns continue to prevent the FDA or other 
regulatory authorities from conducting their regular inspections, reviews, or other regulatory activities, it could significantly impact the 
ability of the FDA or other regulatory authorities to timely review and process our regulatory submissions, which could have a material 
adverse effect on our business.

Risks Specific to our Company in connection with our Commercial Operations

Our competitors may develop drugs that are less expensive, safer and/or more effective than ours, which may diminish or 
eliminate the commercial success of any drugs that we may commercialize.

We compete with companies that have developed drugs or are developing drug candidates for cardiovascular diseases, diseases 
and conditions associated with muscle weakness or wasting and other diseases for which our drug candidates may be useful treatments. 

Our competitors may:

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develop drug candidates and market drugs that are less expensive or more effective than our future drugs;

commercialize competing drugs before we or our partners can launch any drugs developed from our drug candidates;

hold or obtain proprietary rights that could prevent us from commercializing our products;

initiate or withstand substantial price competition more successfully than we can;

• more successfully recruit skilled scientific workers and management from the limited pool of available talent;

• more effectively negotiate third-party licenses and strategic alliances;

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take advantage of acquisition or other opportunities more readily than we can;

develop drug candidates and market drugs that increase the levels of safety or efficacy that our drug candidates will need to 
show in order to obtain regulatory approval; or

introduce therapies or market drugs that render the market opportunity for our potential drugs obsolete.

We will compete for market share against large pharmaceutical and biotechnology companies and smaller companies that are 
collaborating with larger pharmaceutical companies, new companies, academic institutions, government agencies and other public and 
private research organizations. Many of these competitors, either alone or together with their partners, may develop new drug candidates 
that will compete with ours. Many of these competitors have larger research and development programs or substantially greater financial 
resources than we do. Our competitors may also have significantly greater experience in:

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developing drug candidates;

undertaking preclinical testing and clinical trials;

building relationships with key customers and opinion-leading physicians;

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obtaining and maintaining FDA and other regulatory approvals of drug candidates;

formulating and manufacturing drugs; and

launching, marketing and selling drugs.

If our competitors market drugs that are less expensive, safer and/or more efficacious than our potential drugs, or that reach the 
market sooner than our potential drugs, we may not achieve commercial success. In addition, the life sciences industry is characterized 
by rapid technological change. If we fail to stay at the forefront of technological change, we may be unable to compete effectively. Our 
competitors  may  render  our  technologies  obsolete  by  improving  existing  technological  approaches  or  developing  new  or  different 
approaches, potentially eliminating the advantages in our drug discovery process that we believe we derive from our research approach 
and proprietary technologies.

Even if our drug candidates are approved, we may experience difficulties or delays in achieving market access, reimbursement 
and favorable drug pricing for our drug products.

We currently have limited interactions and relationships with payors. Over time, we anticipate that our drugs will be adopted by 
our patients as indicated by the labels once they are approved by regulatory authorities. To achieve this adoption, our drugs will need to 
be covered and listed in formularies of major pharmacy benefit managers and payors in the U.S. These major pharmacy benefit managers 
and payors include Medicare, Medicaid, VA, DoD, TriCare, and other commercial payors with whom we have had limited interactions. 
The process to achieve coverage with pharmacy benefit managers and payors can be time consuming, is not guaranteed and if achieved 
can impact profitability given the level of rebates often required.

Specifically in relation to aficamten and omecamtiv mecarbil, even if such drug candidates are ultimately approved by the FDA 
or other regulatory authorities for commercialization, they may not become a guideline-directed medical therapy for oHCM or HFrEF 
respectively  or  they  may  not  reach  such  status  in  a  timely  manner  upon  commercialization,  which  may  adversely  impact  its  sales 
prospects.  Furthermore,  we  assume  omecamtiv  mecarbil  will  have  a  disproportionally  larger  share  of  Medicare  patients  relative  to 
commercial and other payors. Overall coverage could be delayed given Medicare’s defined bid timelines for inclusion in the Medicare 
Part D formulary. In addition, the rebate levels we may have to offer to pharmacy benefit managers and payors to be included in their 
formularies may also impact the profitability of omecamtiv mecarbil. 

Moreover, pricing of our drug candidates, if approved by the FDA or other regulatory authorities for commercialization, may be 
impacted by cost-effectiveness and economic analyses by a Health Technology Assessment organization such as the Institute for Clinical 
and Economic Review, or ICER, an independent non-profit research institute that produces reports analyzing the evidence underlying 
the  effectiveness  and  value  of  drugs  and  other  medicinal  services.  ICER  assessments  and  recommended  pricing  based  on  cost-
effectiveness may affect our ability to obtain favorable pricing terms with Medicare, Medicaid, VA, DoD, TriCare, and other commercial 
payors. For example, in November 2021, ICER published its final evidence report and policy recommendations related to CAMZYOSTM 
(mavacamten), a small molecule myosin inhibitor developed formerly by MyoKardia, Inc. and commercialized by Bristol-Myers Squibb 
Company that has a similar mechanism of action to aficamten. The report concluded that a majority of contributing panelists found that 
current evidence was not adequate to demonstrate a net health benefit for CAMZYOSTM (mavacamten) added to background therapy 
when compared to background therapy alone or a net health benefit of CAMZYOSTM (mavacamten) when compared to disopyramide. 
Moreover, ICER’s final report concluded that modeling short-term clinical benefits of CAMZYOSTM (mavacamten) over a longer time 
period  produces  a  health-benefit  price  benchmark  index  for  CAMZYOSTM  (mavacamten)  between  $12,000-$15,000  per  year, 
significantly lower than Bristol-Myers Squibb Company's current annual list price in the U.S. Whilst not binding on Medicare, Medicaid, 
VA, DoD, TriCare, and other commercial payors, or indicative of the net health benefits, ICER could conclude for aficamten a similar 
conclusion that could adversely impact our ability to obtain favorable pricing and/or reimbursement.

The  commercial  success  of  our  products  depends  on  the  availability  and  sufficiency  of  third-party  payor  coverage  and 
reimbursement.

Patients in the United States and elsewhere generally rely on third-party payors to reimburse part or all of the costs associated 
with their prescription drugs. Accordingly, market acceptance of our products is dependent on the extent to which third-party coverage 
and reimbursement is available from government health administration authorities (including in connection with government healthcare 
programs, such as Medicare and Medicaid in the United States), private healthcare insurers and other healthcare funding organizations. 
Significant uncertainty exists as to the coverage and reimbursement status of any products for which we may obtain regulatory approval. 
Even if we obtain coverage for a given drug product, the timeframe from approval to coverage could be lengthy, inadequate, and/or the 
associated  reimbursement  rate  may  not  be  adequate  to  cover  our  costs,  including  research,  development,  intellectual  property, 
manufacture, sale and distribution expenses, or may require co-payments that patients find unacceptably high. 

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Coverage and reimbursement policies for drug products can differ significantly from payor to payor as there is no uniform policy 
of coverage and reimbursement for drug products among third-party payors in the United States. There may be significant delays in 
obtaining coverage and reimbursement as the process of determining coverage and reimbursement is often time-consuming and costly 
which will require us to provide scientific and clinical support for the use of our products to each payor separately, with no assurance 
that coverage or adequate reimbursement will be obtained. It is difficult to predict at this time what third-party will decide with respect 
to coverage and reimbursement for our products. Coverage policies and third party reimbursement rates may change at any time. Even 
if favorable coverage and reimbursement status is attained for one or more products for which we receive regulatory approval, less 
favorable coverage policies and reimbursement rates may be implemented in the future.

In addition, there is significant uncertainty regarding the reimbursement status of newly approved healthcare products. We may 
need  to  conduct  expensive  pharmacoeconomic  studies  in  order  to  demonstrate  the  cost-effectiveness  of  our  products.  If  third-party 
payors do not consider our products to be cost-effective compared to other therapies, the payors may not cover our products as a benefit 
under their plans, or if they do, the level of payment may not be sufficient to allow us to sell our products on a profitable basis.

Additionally,  we  or  our  partners  may  develop  companion  diagnostic  tests  for  use  with  our  product  candidates.  Companion 
diagnostic  tests  require  coverage  and  reimbursement  separate  and  apart  from  the  coverage  and  reimbursement  for  their  companion 
pharmaceutical  or  biological  products.  Similar  challenges  to  obtaining  coverage  and  reimbursement,  applicable  to  pharmaceutical 
products, will apply to companion diagnostics.

We expect that increased emphasis on cost containment measures in the United States by third-party payors to continue and will 
place pressure on pharmaceutical pricing and coverage. Coverage policies and third-party reimbursement rates may change at any time. 
Therefore, even if favorable coverage and reimbursement status is attained for one or more drug products for which we receive regulatory 
approval, less favorable coverage policies and reimbursement rates may be implemented in the future. If we are unable to obtain and 
maintain sufficient third-party coverage and adequate reimbursement for our products, the commercial success of our drug products 
may be greatly hindered and our financial condition and results of operations may be materially and adversely affected.

We  have  no  manufacturing  capabilities  and  depend  on  contract  manufacturers  to  produce  our  clinical  trial  materials, 
including  our  drug  candidates,  and  will  have  continued  reliance  on  contract  manufacturers  for  the  development  and 
commercialization of our potential drugs.

We do not currently operate manufacturing facilities for clinical or commercial production of our drug candidates and rely on 
CMOs  for  the  manufacture  of  finished  drug  product  and  active  pharmaceutical  ingredient.  We  have  limited  experience  in  drug 
formulation and manufacturing, and we lack the resources and the capabilities to manufacture any of our drug candidates on a clinical 
or commercial scale. 

In addition, under the Ji Xing Agreements, we have committed to providing Ji Xing with supply of aficamten and omecamtiv 
mecarbil for development and commercialization of aficamten and omecamtiv mecarbil in China and Taiwan, which we will have to 
source from our contract manufacturers. We expect to rely on contract manufacturers to supply all future drug candidates for which we 
conduct development, as well as other materials required to conduct our clinical trials, and to fulfil our obligations under the Ji Xing 
Agreements. 

If any of our existing or future contract manufacturers fail to perform satisfactorily, it could delay development or regulatory 
approval of our drug candidates or commercialization of our drugs, producing additional losses and depriving us of potential product 
revenues, and also lead to our breach of one or both of the Ji Xing Agreements, giving rise to the ability to terminate such agreements 
and other adverse consequences as stipulated in the Ji Xing Agreements. In addition, if a contract manufacturer fails to perform as 
agreed, our ability to collect damages may be contractually limited.

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Our  drug  candidates  require  precise  high-quality  manufacturing.  The  failure  to  achieve  and  maintain  high  manufacturing 
standards, including failure to detect or control anticipated or unanticipated manufacturing errors or the frequent occurrence of such 
errors, could result in patient injury or death, discontinuance or delay of ongoing or planned clinical trials, delays or failures in product 
testing or delivery, cost overruns, product recalls or withdrawals and other problems that could seriously hurt our business. Contract 
drug  manufacturers  often  encounter  difficulties  involving  production  yields,  quality  control  and  quality  assurance  and  shortages  of 
qualified  personnel.  These  manufacturers  are  subject  to  stringent  regulatory  requirements,  including  the  FDA’s  current  good 
manufacturing  practices  regulations  and  similar  foreign  laws  and  standards.  Each  contract  manufacturer  must  pass  a  pre-approval 
inspection before we can obtain marketing approval for any of our drug candidates and following approval will be subject to ongoing 
periodic  unannounced  inspections  by  the  FDA,  the  U.S.  Drug  Enforcement  Agency  and  other  regulatory  agencies,  to  ensure  strict 
compliance with current good manufacturing practices and other applicable government regulations and corresponding foreign laws and 
standards. We seek to ensure that our contract manufacturers comply fully with all applicable regulations, laws and standards. However, 
we do not have control over our contract manufacturers’ compliance with these regulations, laws and standards. If one of our contract 
manufacturers fails to pass its pre-approval inspection or maintain ongoing compliance at any time, the production of our drug candidates 
could be interrupted, resulting in delays or discontinuance of our clinical trials, additional costs and potentially lost revenues. In addition, 
failure of any third-party manufacturers or us to comply with applicable regulations, including pre- or post-approval inspections and the 
current good manufacturing practice requirements of the FDA or other comparable regulatory agencies, could result in sanctions being 
imposed  on  us.  These  sanctions  could  include  fines,  injunctions,  civil  penalties,  failure  of  regulatory  authorities  to  grant  marketing 
approval  of  our  products,  delay,  suspension  or  withdrawal  of  approvals,  license  revocation,  product  seizures  or  recalls,  operational 
restrictions and criminal prosecutions, any of which could significantly and adversely affect our business.

In  addition,  our  existing  and  future  contract  manufacturers  may  not  perform  as  agreed  or  may  not  remain  in  the  contract 
manufacturing business for the time required to successfully produce, store and distribute our drug candidates. If a natural disaster, 
business failure, strike or other difficulty occurs, we may be unable to replace these contract manufacturers in a timely or cost-effective 
manner and the production of our drug candidates would be interrupted, resulting in delays, loss of customers and additional costs.

Switching  manufacturers  or  manufacturing  sites  would  be  difficult  and  time-consuming  because  the  number  of  potential 
manufacturers is limited. In addition, before a drug from any replacement manufacturer or manufacturing site can be commercialized, 
the FDA and, in some cases, foreign regulatory agencies, must approve that site. These approvals would require regulatory testing and 
compliance  inspections.  A  new  manufacturer  or  manufacturing  site  also  would  have  to  be  educated  in,  or  develop  substantially 
equivalent processes for, production of our drugs and drug candidates. It may be difficult or impossible to transfer certain elements of a 
manufacturing process to a new manufacturer or for us to find a replacement manufacturer on acceptable terms quickly, or at all, either 
of which would delay or prevent our ability to develop drug candidates and commercialize any resulting drugs.

We may not be able to successfully manufacture our drug candidates in sufficient quality and quantity, which would delay or 
prevent us from developing our drug candidates and commercializing approved drug products, if any.

To date, our drug candidates have been manufactured in quantities adequate for preclinical studies and early through late-stage 
clinical trials. In order to conduct large scale clinical trials for a drug candidate and for commercialization of the resulting drug if that 
drug candidate is approved for sale, we will need to manufacture some drug candidates in larger quantities. We may not be able to 
successfully repeat or increase the manufacturing capacity for any of our drug candidates, whether in collaboration with third-party 
manufacturers  or  on  our  own,  in  a  timely  or  cost-effective  manner  or  at  all.  If  a  contract  manufacturer  makes  improvements  in  the 
manufacturing  process  for  our  drug  candidates,  we  may  not  own,  or  may  have  to  share,  the  intellectual  property  rights  to  those 
improvements. Significant changes or scale-up of manufacturing may require additional validation studies, which are costly and which 
regulatory authorities must review and approve. In addition, quality issues may arise during those changes or scale-up activities because 
of the inherent properties of a drug candidate itself or of a drug candidate in combination with other components added during the 
manufacturing and packaging process, or during shipping and storage of the finished product or active pharmaceutical ingredients. If 
we are unable to successfully manufacture of any of our drug candidates in sufficient quality and quantity, the development of that drug 
candidate and regulatory approval or commercial launch for any resulting drugs may be delayed or there may be a shortage in supply, 
which could significantly harm our business. In addition, data demonstrating the stability of both drug substance and drug product, using 
the  commercial  manufacturing  process  and  at  commercial  scale,  are  required  for  marketing  applications.  Failure  to  produce  drug 
substance and drug products in a timely manner and obtain stability data could result in delay of submission of marketing applications.

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If we or our partners receive regulatory approval for our drug candidates, we or they will be subject to ongoing obligations to 
and continued regulatory review by the FDA and foreign regulatory agencies, and may be subject to additional post-marketing 
obligations  such  as  an  ETASU  or  other  form  of  REMS,  all  of  which  may  result  in  significant  expense  and  limit 
commercialization of our potential drugs.

Any regulatory approvals that we or our partners receive for our drug candidates may be subject to limitations on the indicated 
uses for which the drug may be marketed or require potentially costly post-marketing follow-up studies or compliance with a REMS. 
For  example,  CAMZYOSTM  (mavacamten),  a  small  molecule  myosin  inhibitor  developed  formerly  by  MyoKardia,  Inc.  and 
commercialized by Bristol-Myers Squibb Company that has a similar mechanism of action to aficamten, is subject to an ETASU REMS, 
an FDA imposed program designed to reinforce medication use behaviors and actions that support the safe use of certain medication 
with serious safety concerns to help ensure the benefits of the medication outweigh its risks. The CAMZYOSTM (mavacamten) ETASU 
REMS program requires, among other things, restrictions and qualifications on pharmacies that dispense the drug and certification, 
record-keeping  and  patient  counselling  obligations  on  physicians  who  prescribe  the  drug.  The  requirements  of  an  ETASU  REMS 
program may limit the commercial success of a drug due by making it more difficult for physicians to prescribe a drug and patients to 
obtain  and  subsequently  use  a  drug.  Since  aficamten  is  a  small  molecule  myosin  inhibitor  with  a  similar  mechanism  of  action  to 
CAMZYOSTM (mavacamten), it is possible that FDA or other regulatory bodies may condition aficamten’s marketing approval on the 
implementation of a similar ETASU REMS program to that of CAMZYOSTM (mavacamten).

In addition, if the FDA or foreign regulatory agencies approves any of our drug candidates, the labeling, packaging, adverse event 
reporting, storage, advertising, promotion and record-keeping for the drug will be subject to extensive regulatory requirements. The 
subsequent discovery of previously unknown problems with the drug, including adverse events of unanticipated severity or frequency, 
or  the  discovery  that  adverse  events  or  toxicities  observed  in  preclinical  research  or  clinical  trials  that  were  believed  to  be  minor 
constitute much more serious problems, may result in restrictions on the marketing of the drug or withdrawal of the drug from the 
market.

The FDA and foreign regulatory agencies may change their policies and additional government regulations may be enacted that 
could  prevent  or  delay  regulatory  approval  of  our  drug  candidates.  We  cannot  predict  the  likelihood,  nature  or  extent  of  adverse 
government regulation that may arise from future legislation or administrative action, either in the United States or abroad. If we are not 
able to maintain regulatory compliance, we might not be permitted to market our drugs and our business would suffer.

If physicians and patients do not accept our drugs, we may be unable to generate significant revenue, if any.

Even  if  our  drug  candidates  obtain  regulatory  approval,  the  resulting  drugs,  if  any,  may  not  gain  market  acceptance  among 
physicians, healthcare payors, patients and the medical community. Even if the clinical safety and efficacy of drugs developed from our 
drug candidates are established for purposes of approval, physicians may elect not to recommend these drugs for a variety of reasons 
including, but not limited to:

•

•

•

•

•

•

•

•

•

introduction of competitive drugs to the market;

clinical safety and efficacy of alternative drugs or treatments;

cost-effectiveness;

availability of coverage and reimbursement from health maintenance organizations and other third-party payors;

convenience and ease of administration;

prevalence and severity of adverse events;

other potential disadvantages relative to alternative treatment methods; or

insufficient patient support;

insufficient marketing and distribution support.

If our drugs fail to achieve market acceptance, we may not be able to generate significant revenue and our business would suffer.

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Risks Specific to our Company in connection with our Intellectual Property

Our success depends substantially upon our ability to obtain and maintain intellectual property protection relating to our drug 
candidates, compounds and research technologies. 

We own, co-own or hold exclusive licenses to a number of U.S. and foreign patents and patent applications directed to our drug 
candidates, compounds and research technologies. Our success depends on our ability to obtain patent protection both in the United 
States and in other countries for our drug candidates, their methods of manufacture and use, and our technologies. Our ability to protect 
our drug candidates, compounds and technologies from unauthorized or infringing use by third parties depends substantially on our 
ability to obtain and enforce our patents. If our issued patents and patent applications, if granted, do not adequately describe, enable or 
otherwise provide coverage of our technologies and drug candidates, we, our licensors or our licensees would not be able to exclude 
others from developing or commercializing these drug candidates. Furthermore, the degree of future protection of our proprietary rights 
is uncertain because legal means may not adequately protect our rights or permit us to gain or keep our competitive advantage. If we are 
unable to obtain and maintain sufficient intellectual property protection for our technologies and drug candidates, or if the scope of the 
intellectual property protection obtained is not sufficiently broad, our competitors could develop and commercialize drug candidates 
similar or identical to ours, and our ability to successfully commercialize product candidates that we may pursue may be impaired.

Obtaining and enforcing biopharmaceutical patents is costly, time consuming and complex, and we may not be able to file and 
prosecute all necessary or desirable patent applications, or maintain, enforce and license any patents that may issue from such patent 
applications, at a reasonable cost or in a timely manner. It is also possible that we will fail to identify patentable aspects of our research 
and development output before it is too late to obtain patent protection. We may not have the right to control the preparation, filing and 
prosecution of patent applications, or to maintain the rights to patents licensed to third parties. Therefore, these patents and applications 
may not be prosecuted and enforced in a manner consistent with the best interests of our business.

Due  to  evolving  legal  standards  relating  to  the  patentability,  validity  and  enforceability  of  patents  covering  pharmaceutical 
inventions and the claim scope of these patents, our ability to enforce our existing patents and to obtain and enforce patents that may 
issue  from  any  pending  or  future  patent  applications  is  uncertain  and  involves  complex  legal,  scientific  and  factual  questions.  The 
standards which the U.S. Patent and Trademark Office and its foreign counterparts use to grant patents are not always applied predictably 
or  uniformly  and  are  subject  to  change.  To  date,  no  consistent  policy  has  emerged  regarding  the  breadth  of  claims  allowed  in 
biotechnology  and  pharmaceutical  patents.  Thus,  we  cannot  be  sure  that  any  patents  will  issue  from  any  pending  or  future  patent 
applications owned by, co-owned by or licensed to us. Even if patents do issue, we cannot be sure that the claims of these patents will 
be held valid or enforceable by a court of law, will provide us with any significant protection against competitive products, or will afford 
us a commercial advantage over competitive products. In particular:

• we or our licensors might not have been the first to make the inventions covered by each of our pending patent applications 

or issued patents;

• we or our licensors might not have been the first to file patent applications for the inventions covered by our pending patent 

applications or issued patents;

•

•

•

•

others may independently develop similar or alternative technologies or duplicate any of our technologies without infringing 
our intellectual property rights;

some or all of our or our licensors’ pending patent applications may not result in issued patents or the claims that issue may 
be narrow in scope and not provide us with competitive advantages;

our and our licensors’ issued patents may not provide a basis for commercially viable drugs or therapies or may be challenged 
and invalidated by third parties;

our  or  our  licensors’  patent  applications  or  patents  may  be  subject  to  interference,  post-grant  proceedings,  derivation, 
reexamination, inter partes review, opposition or similar legal and administrative proceedings that may result in a reduction 
in their scope or their loss altogether;

• we may not develop additional proprietary technologies or drug candidates that are patentable; or

•

the patents of others may prevent us or our partners from discovering, developing or commercializing our drug candidates.

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We may not be able to protect our intellectual property rights throughout the world. Patent protection is afforded on a country-
by-country basis. Filing, prosecuting and defending patents on our product candidates in all countries throughout the world would be 
prohibitively expensive, and our intellectual property rights in some countries outside the United States can be less extensive than those 
in the United States. Many companies have encountered significant difficulties in protecting and defending intellectual property rights 
in foreign jurisdictions. Some of our development efforts are performed in countries outside of the United States through third-party 
contractors. We may not be able to effectively monitor and assess intellectual property developed by these contractors. We therefore 
may not be able to effectively protect this intellectual property and could lose potentially valuable intellectual property rights. In addition, 
the legal protection afforded to inventors and owners of intellectual property in countries outside of the United States may not be as 
protective of intellectual property rights as in the United States. Therefore, we may be unable to acquire and protect intellectual property 
developed by these contractors to the same extent as if these development activities were being conducted in the United States. If we 
encounter difficulties in protecting our intellectual property rights in foreign jurisdictions, our business prospects could be substantially 
harmed.

Patent terms may be inadequate to protect our competitive position on our technologies and drug candidates for an adequate 
amount of time. Patents have a limited lifespan. In the United States, if all maintenance fees are timely paid, the natural expiration of a 
patent is generally 20 years from its earliest U.S. non-provisional filing date. Various extensions may be available, but the life of a 
patent, and the protection it affords, is limited. Even if patents covering our technologies and drug candidates are obtained, once the 
patent life has expired, we may be open to competition from competitive products, including generics or biosimilars. Given the amount 
of time required for the development, testing and regulatory review of new drug candidates, patents protecting such candidates might 
expire before or shortly after such candidates are commercialized. As a result, our owned, co-owned and licensed patent portfolio may 
not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours or our partners. 

Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  procedural,  document  submission,  fee 
payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated 
for non-compliance with these requirements. Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees 
on patents and/or applications will be due to be paid to the USPTO and various governmental patent agencies outside of the United 
States in several stages over the lifetime of the patents and/or applications. Non-compliance could result in abandonment or lapse of the 
patent  or  patent  application,  resulting  in  partial  or  complete  loss  of  patent  rights  in  the  relevant  jurisdiction.  In  such  an  event,  our 
competitors might be able to enter the market and this circumstance would have a material adverse effect on our business. 

We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property. We rely on 
intellectual  property  assignment  agreements  with  our  corporate  partners,  employees,  consultants,  scientific  advisors  and  other 
collaborators to grant us ownership of new intellectual property that is developed. These agreements may not result in the effective 
assignment to us of that intellectual property. As a result, our ownership of key intellectual property could be compromised.

We or our licensors may be subject to claims that former employees, collaborators, consultants or other third parties have an 
interest in our owned, co-owned or in-licensed patents, trade secrets, or other intellectual property as an inventor or co-inventor. For 
example, we or our licensors may have inventorship disputes arise from conflicting obligations of employees, collaborators, consultants 
or others who are involved in developing our product candidates. Litigation may be necessary to defend against these and other claims 
challenging  inventorship  of  our  or  our  licensors’  ownership  of  our  owned,  co-owned  or  in-licensed  patents,  trade  secrets  or  other 
intellectual property. If we or our licensors fail in defending any such claims, in addition to paying monetary damages, we may lose 
valuable intellectual property rights, such as exclusive ownership of, or right to use, intellectual property that is important to our product 
candidates. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to 
management and other employees. Any of the foregoing could have a material adverse effect on our business, financial condition, results 
of operations and prospects. 

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We  are  a  party  to  license  agreements  and  may  need  to  obtain  additional  licenses  from  others  to  advance  our  research  and 
development activities or allow the commercialization of our drug candidates and future drug candidates we may identify and pursue. 
If we fail to comply with our obligations in the agreements under which we license intellectual property rights from third parties or these 
agreements  are  terminated  or  we  otherwise  experience  disruptions  to  our  business  relationships  with  our  licensors,  we  could  lose 
intellectual  property  rights  that  are  important  to  our  business.  Our  licensors  might  conclude  that  we  have  materially  breached  our 
obligations under such license agreements and might therefore terminate, or seek to terminate, the license agreements, thereby removing 
or  limiting  our  ability  to  develop  and  commercialize  products  and  technology  covered  by  these  license  agreements.  If  our  license 
agreements are terminated, we may be required to cease our development and commercialization of our product candidates. Any of the 
foregoing could have a material adverse effect on our competitive position, business, financial conditions, results of operations and 
prospects. Moreover, disputes may arise regarding intellectual property subject to a licensing agreement. The resolution of any contract 
interpretation disagreement that may arise could narrow what we believe to be the scope of our rights to the relevant intellectual property 
or technology, or increase what we believe to be our financial or other obligations under the agreement, either of which could have a 
material adverse effect on our business, financial condition, results of operations and prospects. Moreover, if disputes over intellectual 
property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on commercially acceptable 
terms, we may be unable to successfully develop and commercialize the affected product candidates. Any of the foregoing could have 
a material adverse effect on our competitive position, business, financial conditions, results of operations and prospects.

Changes in either the patent laws or their interpretation in the United States or other countries may diminish the value of our 
intellectual property or our ability to obtain patents. For example, the America Invents Act of 2011 may affect the scope, strength and 
enforceability of our patent rights in the United States or the nature of proceedings which may be brought by us related to our patent 
rights in the United States.

If  one  or  more  products  resulting  from  our  drug  candidates  is  approved  for  sale  by  the  FDA  and  we  do  not  have  adequate 
intellectual property protection for those products, competitors could duplicate them for approval and sale in the United States without 
repeating the extensive testing required of us or our partners to obtain FDA approval. Regardless of any patent protection, under current 
law, an application for a generic version of a new chemical entity cannot be approved until at least five years after the FDA has approved 
the original product. When that period expires, or if that period is altered, the FDA could approve a generic version of our product 
regardless  of  our  patent  protection.  An  applicant  for  a  generic  version  of  our  product  may  only  be  required  to  conduct  a  relatively 
inexpensive study to show that its product is bioequivalent to our product, and may not have to repeat the lengthy and expensive clinical 
trials that we or our partners conducted to demonstrate that the product is safe and effective. In the absence of adequate patent protection 
for our products in other countries, competitors may similarly be able to obtain regulatory approval in those countries of generic versions 
of our products.

If we are unable to protect the confidentiality of our trade secrets, the value of our technology could be materially adversely 
affected and our business would be harmed. 

We also rely on trade secrets to protect our technology, particularly where we believe patent protection is not appropriate or 
obtainable.  However,  trade  secrets  are  often  difficult  to  protect,  especially  outside  of  the  United  States.  While  we  endeavor  to  use 
reasonable efforts to protect our trade secrets, our or our partners’ employees, consultants, contractors or scientific and other advisors 
may unintentionally or willfully disclose our information to competitors. In addition, confidentiality agreements, if any, executed by 
those individuals may not be enforceable or provide meaningful protection for our trade secrets or other proprietary information in the 
event of unauthorized use or disclosure. We cannot be certain that such agreements have been entered into with all relevant parties, and 
we cannot be certain that our trade secrets and other confidential proprietary information will not be disclosed or that competitors will 
not otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. Pursuing a 
claim that a third party had illegally obtained and was using our trade secrets would be expensive and time-consuming, and the outcome 
would  be  unpredictable.  Even  if  we  are  able  to  maintain  our  trade  secrets  as  confidential,  if  our  competitors  lawfully  obtain  or 
independently develop information equivalent or similar to our trade secrets, our business could be harmed.

If we are not able to defend the patent or trade secret protection position of our technologies and drug candidates, then we will 
not be able to exclude competitors from developing or marketing competing drugs, and we may not generate enough revenue from 
product sales to justify the cost of development of our drugs or to achieve or maintain profitability.

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If we are sued for infringing third-party intellectual property rights, it will be costly and time-consuming, and an unfavorable 
outcome could have a significant adverse effect on our business.

Our ability to commercialize drugs depends on our ability to use, manufacture and sell those drugs without infringing the patents 
or other proprietary rights of third parties. Numerous U.S. and foreign issued patents and pending patent applications owned by third 
parties exist in the therapeutic areas in which we are developing drug candidates and seeking new potential drug candidates. In addition, 
because patent applications can take several years to issue, there may be currently pending applications, unknown to us, which could 
later result in issued patents that our activities with our drug candidates could infringe. There may also be existing patents, unknown to 
us, that our activities with our drug candidates could infringe.

Other future products of ours may be impacted by patents of companies engaged in competitive programs with significantly 
greater resources. Further development of these products could be impacted by these patents and result in significant legal fees. If a third 
party claims that our actions infringe its patents or other proprietary rights, we could face a number of issues that could seriously harm 
our competitive position, including, but not limited to:

•

•

•

•

infringement and other intellectual property claims that, even if meritless, can be costly and time-consuming to litigate, delay 
the regulatory approval process and divert management’s attention from our core business operations;

substantial damages for past infringement which we may have to pay if a court determines that our drugs or technologies 
infringe a third party’s patent or other proprietary rights;

a  court  prohibiting  us  from  selling  or  licensing  our  drugs  or  technologies  unless  the  holder  licenses  the  patent  or  other 
proprietary rights to us, which it is not required to do; and

if a license is available from a holder, we may have to pay substantial royalties or grant cross-licenses to our patents or other 
proprietary rights.

If any of these events occur, it could significantly harm our business and negatively affect our stock price.

We may undertake infringement or other legal proceedings against third parties, causing us to spend substantial resources on 
litigation and exposing our own intellectual property portfolio to challenge.

Third parties may infringe our patents. To prevent infringement or unauthorized use, we may need to file infringement suits, 
which are expensive and time-consuming. In an infringement proceeding, a court may decide that one or more of our patents is invalid, 
unenforceable, or both. In such case third parties may be able to use our technology without paying licensing fees or royalties. Even if 
the validity of our patents is upheld, a court may refuse to stop the other party from using the technology at issue on the ground that the 
other party’s activities are not covered by our patents. Policing unauthorized use of our intellectual property is difficult, and we may not 
be able to prevent misappropriation of our proprietary rights, particularly in countries where the laws may not protect such rights as 
fully as in the United States. In addition, third parties may affirmatively challenge our rights to, or the scope or validity of, our patent 
rights.

The uncertainties associated with litigation could have a material adverse effect on our ability to raise the funds necessary to 
conduct  clinical  trials,  continue  our  research  programs,  license  necessary  technology  from  third  parties,  or  enter  into  development 
partnerships that would help us bring our drug candidates or other product candidates that we may identify to market. Furthermore, 
because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of 
our  confidential  information  could  be  compromised  by  disclosure  during  this  type  of  litigation.  There  could  also  be  public 
announcements of the results of hearings, motions, or other interim proceedings or developments. If securities analysts or investors 
perceive these results to be negative, it could have a material adverse effect on the price of our common stock.

We may become involved in disputes with our strategic partners over intellectual property ownership, and publications by our 
research collaborators and clinical investigators could impair our ability to obtain patent protection or protect our proprietary 
information, either of which would have a significant impact on our business.

Inventions  discovered  under  our  current  or  future  strategic  alliance  agreements  may  become  jointly  owned  by  our  strategic 
partners and us in some cases, and the exclusive property of one of us in other cases. Under some circumstances, it may be difficult to 
determine who owns a particular invention or whether it is jointly owned, and disputes could arise regarding ownership or use of those 
inventions. These disputes could be costly and time-consuming, and an unfavorable outcome could have a significant adverse effect on 
our business if we were not able to protect or license rights to these inventions. In addition, our research collaborators and clinical 
investigators generally have contractual rights to publish data arising from their work. Publications by our research collaborators and 
clinical investigators relating to our research and development programs, either with or without our consent, could benefit our current 
or  potential  competitors  and  may  impair  our  ability  to  obtain  patent  protection  or  protect  our  proprietary  information,  which  could 
significantly harm our business.

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We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed 
confidential information of third parties or that we or our employees have wrongfully used or disclosed trade secrets of their 
former employers.

Many of our employees were previously employed at universities or other biotechnology or pharmaceutical companies, including 
our competitors or potential competitors. Although no legal proceedings against us are currently pending, we may be subject to claims 
that these employees or we have inadvertently or otherwise used or disclosed trade secrets or other proprietary information of their 
former employers. Litigation may be necessary to defend against these claims. If we fail in defending these claims, in addition to paying 
monetary damages, we may lose valuable intellectual property rights or personnel. A loss of key research personnel or their work product 
could hamper or prevent our ability to develop and commercialize certain potential drugs, which could significantly harm our business. 
Even if we are successful in defending against these claims, litigation could result in substantial costs and distract management.

Financial Risks 

We have a history of significant losses and may not achieve or sustain profitability and, as a result, you may lose part or all of 
your investment.

We have generally incurred operating losses in each year since our inception in 1997, due to costs incurred in connection with 
our research and development activities and general and administrative costs associated with our operations. Our drug candidates are all 
in early through late-stage clinical testing, and we must conduct significant additional clinical trials before we and our partners can seek 
the regulatory approvals necessary to begin commercial sales of our drugs. We expect to incur increasing losses for at least several more 
years, as we continue our research activities and conduct development of, and seek regulatory approvals for, our drug candidates, and 
commercialize any approved drugs. If our drug candidates fail or do not gain regulatory approval, or if our drugs do not achieve market 
acceptance, we will not be profitable. If we fail to become and remain profitable, or if we are unable to fund our continuing losses, you 
could lose part or all of your investment.

We will need substantial additional capital in the future to sufficiently fund and maintain our operations.

We have consumed substantial amounts of capital to date, and our operating expenditures will increase over the next several 
years  as  we  expand  our  research  and  development  activities  and  expand  our  organization  to  prepare  for  commercialization  of  any 
approved drug. We have funded our operations and capital expenditures with proceeds primarily from private and public sales of our 
equity securities, royalty monetization agreements, revenue interest agreements, strategic alliances, long-term debt, other financings, 
interest on investments and grants. We believe that our existing cash and cash equivalents, short-term investments and interest earned 
on investments should be sufficient to meet our projected operating requirements for at least the next 12 months. We have based this 
estimate on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we currently 
expect. Because of the numerous risks and uncertainties associated with the development of our drug candidates and other research and 
development activities, including risks and uncertainties that could impact the rate of progress of our development activities, we are 
unable to estimate with certainty the amounts of capital outlays and operating expenditures associated with these activities.

For  the  foreseeable  future,  our  operations  will  require  significant  additional  funding,  in  large  part  due  to  our  research  and 
development expenses, the organizational scale up and associated expenditures with commercial readiness activities to launch approved 
drugs combined with the absence of any revenues from product sales. Until we can generate a sufficient amount of product revenue, we 
expect to raise future capital through strategic alliance and licensing arrangements, public or private equity offerings and debt financings. 
We do not currently have any commitments for future funding other than through loans under the RP Loan Agreement with RPDF and 
reimbursements, milestone and royalty payments that we may receive under our agreements with Ji Xing. We may not receive any 
further funds under any of these agreements. Our ability to raise funds may be adversely impacted by worsening economic conditions 
and the recent disruptions to, and volatility in, the credit and financial markets in the U.S. and worldwide resulting from the effects of 
inflationary pressures, potential future bank failures, global geopolitical factors including war or other hostilities, or otherwise. As a 
result of these and other factors, we do not know whether additional financing will be available when needed, or that, if available, such 
financing would be on terms favorable to our stockholders or us, and if we cannot raise the funds we need to operate our business, we 
will need to delay or discontinue certain research and development activities, and our stock price may be negatively affected.

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We have never generated, and may never generate, revenues from commercial sales of our drugs and we may not have drugs 
to commercialize for at least several years, if ever.

We currently have no drugs for sale and we cannot guarantee that we will ever develop or obtain approval to market any drugs. 
To receive marketing approval for any drug candidate, we must demonstrate that the drug candidate satisfies rigorous standards of safety 
and efficacy to the FDA in the United States and other regulatory authorities abroad. We and our partners will need to conduct significant 
research and preclinical and clinical testing before we or our partners can file applications with the FDA or other regulatory authorities 
for approval of any of our drug candidates. In addition, to compete effectively, our drugs must be easy to use, cost-effective, covered by 
insurance or government sponsored medical plans, and economical to manufacture on a commercial scale, compared to other therapies 
available for the treatment of the same conditions. We may not achieve any of these objectives. Currently, our late clinical-stage drug 
candidates include omecamtiv mecarbil for the potential treatment of heart failure, and aficamten for the potential treatment of HCM 
and potentially other indications. We cannot be certain that the clinical development of our current or any future drug candidates will 
be successful, that they will receive the regulatory approvals required to commercialize them, that they will ultimately be accepted by 
prescribers or reimbursed by insurers or that any of our other research programs will yield a drug candidate suitable for clinical testing 
or commercialization. For example, our NDA for omecamtiv mecarbil for the treatment of HFrEF resulted in a CRL notwithstanding 
the  fact  that  GALACTIC-HF  met  its  primary  efficacy  endpoint,  and  that  the  results  from  an  additional  clinical  trial  of  omecamtiv 
mecarbil are required to establish substantial evidence of effectiveness for the treatment of HFrEF, with benefits that outweigh the risks. 
Our commercial revenues, if any, will be derived from sales of drugs that may not be commercially marketed for several years, if at all. 
The development of any one or all of these drug candidates may be discontinued at any stage of our clinical trials programs and we may 
not generate revenue from any of these drug candidates.

Our indebtedness and liabilities could limit the cash flow available for our operations, expose us to risks that could adversely 
affect our business, financial condition and results of operations and impair our ability to satisfy our obligations under the 
2026 Notes, the 2027 Notes and the RP Loan Agreement.

As of December 31, 2023, we had $617.5 million of debt recorded on the balance sheet comprised of the RP Loan Agreement 

and the 2026 and 2027 Convertible Notes.  

We may also incur additional indebtedness to meet future financing needs. Our indebtedness could have significant negative 

consequences for our security holders and our business, results of operations and financial condition by, among other things:

•

•

•

•

•

•

increasing our vulnerability to adverse economic and industry conditions;

limiting our ability to obtain additional financing;

requiring the dedication of a substantial portion of our cash flow from operations to service our indebtedness, which will 
reduce the amount of cash available for other purposes;

limiting our flexibility to plan for, or react to, changes in our business;

diluting the interests of our existing stockholders as a result of issuing shares of our common stock upon conversion of the 
Convertible Notes; and

placing us at a possible competitive disadvantage with competitors that are less leveraged than us or have better access to 
capital.

Our business may not generate sufficient funds, and we may otherwise be unable to maintain sufficient cash reserves, to pay 
amounts  due  under  our  indebtedness  and  our  cash  needs  may  increase  in  the  future.  In  addition,  any  required  repurchase  of  the 
Convertible Notes for cash as a result of a fundamental change would lower our current cash on hand such that we would not have those 
funds available for us in our business. Further any future indebtedness that we may incur may contain financial and other restrictive 
covenants that limit our ability to operate our business, raise capital or make payments under our other indebtedness. If we fail to comply 
with these covenants or to make payments under our indebtedness when due, then we would be in default under that indebtedness, which 
could, in turn, result in that and our other indebtedness becoming immediately payable in full.

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Covenants in the RP Loan Agreement, the RP Aficamten RPA, the RP OM RPA, and the indentures related to our Convertible 
Notes restrict our business and operations in many ways and if we do not effectively manage our covenants, our financial 
conditions and results of operations could be adversely affected. Our operations may not provide sufficient cash to meet our 
debt repayment obligations.

The RP Loan Agreement, the RP Aficamten RPA, the RP OM RPA, and the indentures related to the Convertible Notes require 
that we comply with certain covenants applicable to us, including among other things, covenants restricting dispositions, changes in 
business,  management,  ownership  or  business  locations,  mergers  or  acquisitions,  indebtedness,  encumbrances,  distributions, 
investments, transactions with affiliates and subordinated debt, any of which could restrict our business and operations, particularly our 
ability to respond to changes in our business or to take specified actions to take advantage of certain business opportunities that may be 
presented to us. In addition, the RP Aficamten RPA and the RP OM RPA contain certain covenants applicable to us, including among 
other  things,  development  and  commercialization  diligence  obligations  in  connection  to  aficamten  and  omecamtiv  mecarbil  and 
reporting  obligations,  which  could  also  restrict  our  business  and  operations,  particularly  in  connection  to  our  development  and 
commercialization of aficamten and omecamtiv mecarbil.

Our failure to comply with any of the covenants could result in a default under the RP Loan Agreement, the RP Aficamten RPA, 
the RP OM RPA, or the indentures related to the Convertible Notes, which could permit the counterparties to declare all or part of any 
outstanding borrowings or other payment obligations to be immediately due and payable and/or enforce any outstanding liens against 
our assets.

We  have  no  rights  to  repurchase  the  revenue  interests  in  omecamtiv  mecarbil  or  aficamten  sold  to  RPFT  or  RPI  ICAV 
respectively, thereby limiting our ability to eliminate future applicability of the covenants contained in the RP OM RPA and the RP 
Aficamten RPA, and although we do have voluntary prepayment rights under the RP Loan Agreement, any voluntary prepayment rights 
will require that we pay RPDF 190% of the principal amount of amounts disbursed to us as tranche 1, tranche 4 and tranche 5 loans and 
200% for tranche 2 and tranche 3 loans, thereby making it potentially disadvantageous to voluntarily prepay RPDF prior to the final 
maturity date applicable to loans outstanding under the RP Loan Agreement. 

In addition, certain provisions in the 2026 Notes, the 2027 Notes and the related indentures could make a third-party attempt to 
acquire us more difficult or expensive. For example, if a takeover constitutes a fundamental change under our indenture, then noteholders 
will have the right to require us to repurchase their notes for cash. In addition, if a takeover constitutes a make-whole fundamental 
change under our indenture, then we may be required to temporarily increase the conversion rate. In either case, and in other cases, our 
obligations under the Convertible Notes and the related Indentures could increase the cost of acquiring us or otherwise discourage a 
third party from acquiring us or removing incumbent management, including in a transaction that noteholders or holders of our common 
stock may view as favorable.

Finally, should we be unable to comply with our covenants or if we default on any portion of our outstanding borrowings under 
the RP Loan Agreement, in addition to its rights to accelerate and demand for immediate repayment of amounts outstanding under the 
RP Loan Agreement, we would be liable for default interest at a rate of 4% over the prime rate.

We may not be entitled to obtain additional loan disbursements under the RP Loan Agreement. 

On January 7, 2022, we announced that we had entered into the RP Loan Agreement with RPDF, such entity being affiliated with 
Royalty Pharma International plc. The RP Loan Agreement makes available to us up to $300.0 million in loans, of which a $50.0 million 
loan was paid to us at the closing of such transaction. With the positive results of SEQUOIA-HCM, we have satisfied the conditions 
related to tranche 4 of the RP Loan Agreement and thus an additional $75 million in loans are currently available to us for disbursement. 
Tranche 5 of the RP Loan Agreement would be available to us upon acceptance for filing by FDA of an NDA for aficamten. Should we 
not satisfy such condition for tranche 5 by March 31, 2025, or in the event we fail to meet our obligations or default under the agreement, 
the actual amount of additional loan disbursements could be substantially less than the maximum amounts available thereunder. For 
example,  as  a  result  of  FDA's  CRL  in  response  to  our  NDA  for  omecamtiv  mecarbil,  we  have  not  satisfied  the  conditions  for  the 
availability of disbursement of the $50 million tranche 2 and $25 million tranche 3 term loans under the RP Loan Agreement.

We are subject to counterparty risk under the RP Loan Agreement

We are subject to counterparty risk in the event that RPDF defaults on its obligations under the RP Loan Agreement. In such 
event, we have no recourse against Royalty Pharma International plc or any of its other affiliated or controlled entities, and in the event 
of an RPDF insolvency, we would have no rights to additional loan disbursements from RPDF.

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Conversion of our outstanding Convertible Notes may result in the dilution of existing stockholders, create downward pressure 
on the price of our common stock, and restrict our ability to take advantage of future opportunities.

The Convertible Notes may be converted into cash and shares of our common stock (subject to our right or obligation to pay cash 
in  lieu  of  all  or  a  portion  of  such  shares).  If  shares  of  our  common  stock  are  issued  to  the  holders  of  the  Convertible  Notes  upon 
conversion, there will be dilution to our stockholders’ equity and the market price of our shares may decrease due to the additional 
selling pressure in the market. Any downward pressure on the price of our common stock caused by the sale or potential sale of shares 
issuable upon conversion of the Convertible Notes could also encourage short sales by third parties, creating additional selling pressure 
on our stock. The existence of the Convertible Notes and the obligations that we incurred by issuing them may restrict our ability to take 
advantage of certain future opportunities, such as engaging in future debt or equity financing activities.

We will depend on Ji Xing for the development and commercialization of aficamten and omecamtiv mecarbil in China and 
Taiwan.

Under the terms of the Ji Xing Agreements, Ji Xing will be responsible for the development and commercialization of aficamten 
and omecamtiv mecarbil in China and Taiwan. The timing and amount of any milestone and royalty payments we may receive under 
the Ji Xing Agreements will depend in part on the efforts and successful commercialization of aficamten and omecamtiv mecarbil by Ji 
Xing.  We  do  not  control  the  individual  efforts  of  Ji  Xing,  and  any  failure  by  Ji  Xing  to  devote  sufficient  time  and  effort  to  the 
development and commercialization of aficamten or omecamtiv mecarbil or to meet its obligations to us, including for future milestone 
and royalty payments; or to adequately deploy business continuity plans in the event of a crisis, or to satisfactorily resolve significant 
disagreements with us could each have an adverse impact on our financial results and operations. We will also depend on Ji Xing to 
comply with all applicable laws relative to the development and commercialization of aficamten and omecamtiv mecarbil in China and 
Taiwan. If Ji Xing were to violate, or was alleged to have violated, any laws or regulations during the performance of its obligations for 
us, it is possible that we could suffer financial and reputational harm or other negative outcomes, including possible legal consequences.

Any termination, breach or expiration of the Ji Xing Agreements could have a material adverse effect on our financial position 
by reducing or eliminating the potential for us to receive milestones and royalties. In such an event, we may be required to devote 
additional  efforts  and  to  incur  additional  costs  associated  with  pursuing  the  development  and  commercialization  of  aficamten  and 
omecamtiv mecarbil in China and Taiwan. Alternatively, we may attempt to identify and transact with a new sub-licensee, but there can 
be no assurance that we would be able to identify a suitable sub-licensee or transact on terms that are favorable to us.

Our ability to use net operating loss carryforwards and tax credit carryforwards to offset future taxable income may be subject 
to certain limitations, and ownership changes may limit our ability to use our net operating losses and tax credits in the future.

Our ability to use our federal and state NOLs to offset potential future taxable income and reduce related income taxes depends 
upon our generation of future taxable income. We cannot predict with certainty when, or whether, we will generate sufficient taxable 
income to use our NOLs. 

Our federal NOLs generated in taxable years beginning prior to 2018 will continue to be governed by tax rules in effect prior to 
the Tax Act, with unused NOLs expiring 20 years after we report a tax loss. These NOLs could expire unused and be unavailable to 
offset future taxable income. We cannot predict if and to what extent various states will conform to the Tax Act, as modified by additional 
tax legislation enacted in 2020.

In addition, generally, if one or more stockholders or groups of stockholders who owns at least 5% of our stock increases its 
ownership by more than 50% over its lowest ownership percentage within a three-year testing period, an ownership change occurs (an 
“Ownership Change”). Our ability to utilize our NOLs and tax credit carryforwards to reduce taxes payable in a year we have taxable 
income may be limited if there has been an Ownership Change in our stock. Similar rules may apply under state tax laws. We may 
experience Ownership Changes in the future as a result of future stock sales or other changes in the ownership of our stock, some of 
which are beyond our control and, as a result, NOLs generated in taxable years beginning 2017 and before, may expire unused. 

Any material limitation or expiration of our NOLs and tax credit carryforwards may harm our future net income by effectively 

increasing our future effective tax rate, which could result in a reduction in the market price of our common stock.

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Comprehensive U.S. tax reform legislation could increase the tax burden on our orphan drug programs and adversely affect 
our business and financial condition.

In 2017, the U.S. government enacted the Tax Act that includes significant changes to the taxation of business entities, which 
was modified by additional federal tax legislation in 2020. The comprehensive tax legislation, among other things, reduces the orphan 
drug tax credit from 50% to 25% of qualifying expenditures. When and if we become profitable, this reduction in tax credits may result 
in an increased federal income tax burden on our orphan drug programs as it may cause us to pay federal income taxes earlier under the 
revised tax law than under the prior law and, despite being partially off-set by a reduction in the corporate tax rate from a top marginal 
rate of 35% to a flat rate of 21%, may increase our total federal tax liability attributable to such programs. 

Notwithstanding the reduction in the corporate income tax rate, the overall impact of this comprehensive tax legislation resulted 
in an overall reduction in our deferred tax assets, and our business and financial condition could still be adversely affected as additional 
guidance and regulations are issued with respect to the original tax law change. In addition, it is uncertain if and to what extent various 
states will conform to this comprehensive tax legislation, and states may enact suspensions or limitations on the use of net operating 
losses and tax credits. The impact of the 2017 tax legislation on holders of our common stock is also uncertain and could be adverse. 

We are obligated to maintain proper and effective internal control over financial reporting. In the future, we may not complete 
our  execution  of  our  internal  control  over  financial  reporting  in  a  timely  manner,  or  these  internal  controls  may  not  be 
determined  to  be  effective,  which  may  result  in  material  misstatements  in  our  consolidated  financial  statements  and  may 
adversely affect investor confidence in our company and, as a result, the value of our common stock.

We are required, pursuant to Section 404 of the Sarbanes-Oxley Act, to furnish a report by management on, among other things, 

the effectiveness of our internal control over financial reporting.

Complying with Section 404 requires a rigorous compliance program as well as adequate time and resources. We may not be able 
to complete our internal control evaluation, testing and any required remediation in a timely fashion. Additionally, if we identify one or 
more material weaknesses in our internal control over financial reporting, we will not be able to assert that our internal controls are 
effective. A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting such that there 
is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected 
on a timely basis. 

If material weaknesses are identified in the future or we are not able to comply with the requirements of Section 404 in a timely 
manner, our reported financial results could be materially misstated, we would receive an adverse opinion regarding our internal controls 
over financial reporting from our independent registered public accounting firm, and we could be subject to investigations or sanctions 
by regulatory authorities, which would require additional financial and management resources, and the value of our common stock could 
decline. To the extent we identify future weaknesses or deficiencies, there could be material misstatements in our consolidated financial 
statements and we could fail to meet our financial reporting obligations. As a result, our ability to obtain additional financing, or obtain 
additional financing on favorable terms, could be materially and adversely affected which, in turn, could materially and adversely affect 
our business, our financial condition and the value of our common stock. If we are unable to assert that our internal control over financial 
reporting is effective in the future, or if our independent registered public accounting firm is unable to express an opinion or expresses 
an adverse opinion on the effectiveness of our internal controls in the future, investor confidence in the accuracy and completeness of 
our financial reports could be further eroded, which would have a material adverse effect on the price of our common stock.

Our reported financial results may be adversely affected by changes in accounting principles generally accepted in the U.S.

We prepare our financial statements in conformity with accounting principles generally accepted in the U.S. These accounting 
principles are subject to interpretation by the FASB and the SEC. A change in these policies or interpretations could have a significant 
effect on our reported financial results, may retroactively affect previously reported results, could cause unexpected financial reporting 
fluctuations, and may require us to make costly changes to our operational processes and accounting systems.

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Legal and Compliance Risks

Recently  enacted  laws,  including  the  Inflation  Reduction  Act,  or  IRA,  and  potential  future  legislation  may  increase  the 
difficulty and cost for us to obtain regulatory approval of, and to commercialize our products and affect the prices we may 
obtain upon commercialization.

The  regulations  that  govern,  among  other  things,  regulatory  approvals,  coverage,  pricing  and  reimbursement  for  new  drug 
products vary widely from country to country. In the United States and some foreign jurisdictions, there have been a number of legislative 
and regulatory changes and proposed changes regarding the healthcare system that could prevent or delay regulatory approval of our 
product  candidates,  restrict  or  regulate  post-approval  activities  and  affect  our  ability  to  successfully  sell  any  product  candidates  for 
which we obtain regulatory approval. In particular, in March 2010, the ACA was enacted, which substantially changed the way health 
care is financed by both governmental and private insurers, and continues to significantly impacts the U.S. pharmaceutical industry. The 
ACA and its implementing regulations, among other things, addressed a new methodology by which rebates owed by manufacturers 
under  the  Medicaid  Drug  Rebate  Program  are  calculated  for  certain  drugs  and  biologics,  including  our  product  candidates  that  are 
inhaled, infused, instilled, implanted or injected, increased the minimum Medicaid rebates owed by manufacturers under the Medicaid 
Drug Rebate Program, extended the Medicaid Drug Rebate Program to utilization of prescriptions of individuals enrolled in Medicaid 
managed care organizations, subjected manufacturers to new annual fees and taxes for certain branded prescription drugs, provided 
incentives to programs that increase the federal government’s comparative effectiveness research and established a new Medicare Part 
D coverage gap discount program.

Other legislative changes have been proposed and adopted in the United States since the ACA was enacted. In August 2011, the 
Budget  Control  Act  of  2011,  among  other  things,  created  measures  for  spending  reductions  by  the  U.S.  Congress.  A  Joint  Select 
Committee  on  Deficit  Reduction,  tasked  with  recommending  a  targeted  deficit  reduction  of  at  least  $1.2  trillion  for  the  years  2013 
through  2021,  was  unable  to  reach  required  goals,  thereby  triggering  the  legislation’s  automatic  reduction  to  several  government 
programs. This includes aggregate reductions of Medicare payments to providers of 2% per fiscal year, which went into effect in April 
2013, and, due to subsequent legislative amendments, will remain in effect until 2032 unless additional Congressional action is taken. 
In January 2013, the American Taxpayer Relief Act of 2012 was enacted which, among other things, further reduced Medicare payments 
to several providers, including hospitals and outpatient clinics, and increased the statute of limitations period for the government to 
recover overpayments to providers from three to five years.

Since its enactment, there have been executive, judicial and Congressional challenges to numerous elements of the ACA, as well 
as efforts to repeal or replace certain aspects of the ACA. For example, on June 17, 2021, the U.S. Supreme Court dismissed a challenge 
on  procedural  grounds  that  argued  the  ACA  is  unconstitutional  in  its  entirety  because  the  “individual  mandate”  was  repealed  by 
Congress. It is possible that the ACA will be subject to executive, judicial, and Congressional challenges in the future. It is unclear how 
any such challenges will impact the ACA and our business. Policy changes, including potential modification or repeal of all or parts of 
the ACA or the implementation of new health care legislation, could result in significant changes to the health care system which may 
adversely affect our business in unpredictable ways.

In August 2022, the Inflation Reduction Act, or IRA, was signed into law, which, among other things, includes prescription drug 
provisions that may impact product pricing including the potential for net price reductions and/or the ability to increase price beyond 
the level of inflation over the lifecycle of our products, and/or may increase our rebate obligation to Medicare. Provisions include a 
requirement that the HHS negotiate drug prices for single-source brand-name drugs and biologics that are among the 50 drugs with the 
highest total Medicare Part D spending. The law establishes a maximum fair price, outlines the process by which the Secretary of HHS 
will identify drugs for negotiations, and establishes non-compliance penalties for manufacturers. The IRA implements inflation rebates 
in Medicare when a drug’s Average Manufacturer Price (AMP, in Part D) or Average Sale Price (ASP, in Part B) rises faster than the 
inflation index (CPI-U). In addition, the Part D drug benefit caps beneficiary spending at $2,000, eliminates the coverage gap for patients, 
and modifies, beginning in 2025, liabilities for drug manufacturers by replacing the 70% discount in the Coverage gap with a 10% 
discount in the Initial Coverage phase and a 20% discount in the Catastrophic phase. The IRA permits HHS to implement many of these 
provisions through guidance, as opposed to regulation, for the initial years. These provisions take effect progressively starting in fiscal 
year 2023. On August 29, 2023, HHS announced the list of the first ten drugs that will be subject to price negotiations, although the 
Medicare drug price negotiation program is currently subject to legal challenges.

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There have been, and likely will continue to be, legislative and regulatory proposals at the foreign, federal and state levels directed 
at broadening the availability of healthcare and containing or lowering the cost of healthcare. However, we cannot predict the timing or 
substance of proposals that may be adopted in the future, particularly in light of the difficulty of advancing legislation through Congress. 
The continuing efforts of governments, insurance companies, managed care organizations and other payors of healthcare services to 
contain or reduce costs of healthcare, including by imposing price controls, may adversely affect the demand and/or potential sales for 
our product candidates for which we obtain regulatory approval and our ability to set a price that we believe is fair for our products. 
Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from 
private payors.

Legislative and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional 
activities for pharmaceutical products. We cannot be sure whether additional legislative changes will be enacted, or whether the FDA 
or foreign regulations, guidance or interpretations will be changed, or what the impact of these changes on the regulatory approvals of 
our product candidates, if any, may be. In the United States, the E.U. and other potentially significant markets for our product candidates, 
government authorities and third-party payors are increasingly attempting to limit or regulate the price of medical products and services, 
particularly for new and innovative products and therapies, which has resulted in lower average selling prices. For example, in the United 
States, there have been several recent Congressional inquiries and proposed and enacted federal and state legislation designed to, among 
other things, bring more transparency to drug pricing, review the relationship between pricing and manufacturer patient programs, and 
reform government program reimbursement methodologies for drugs. At the state level, legislatures have increasingly passed legislation 
and  implemented  regulations  designed  to  control  pharmaceutical  and  biological  product  pricing,  including  price  or  patient 
reimbursement constraints, discounts, restrictions on certain product access and marketing cost disclosure and transparency measures, 
and, in some cases, to encourage importation from other countries and bulk purchasing. For example, on January 5, 2024, the FDA 
approved Florida’s Section 804 Importation Program (SIP) proposal to import certain drugs from Canada for specific state healthcare 
programs. It is unclear how this program will be implemented, including which drugs will be chosen, and whether it will be subject to 
legal challenges in the United States or Canada. Other states have also submitted SIP proposals that are pending review by the FDA. 
Any such approved importation plans, when implemented, may result in lower drug prices for products covered by those programs In 
addition to the enactment of the IRA, in response to the Biden administration’s October 2022 executive order, on February 14, 2023, 
HHS released a report outlining three new models for testing by the Centers for Medicare & Medicaid Services Innovation Center which 
will be evaluated on their ability to lower the cost of drugs, promote accessibility, and improve quality of care. It is unclear whether the 
models will be utilized in any health reform measures in the future. Further, on December 7, 2023, the Biden administration announced 
an initiative to control the price of prescription drugs through the use of march-in rights under the Bayh-Dole Act. On December 8, 
2023,  the  National  Institute  of  Standards  and  Technology  published  for  comment  a  Draft  Interagency  Guidance  Framework  for 
Considering the Exercise of March-In Rights which for the first time includes the price of a product as one factor an agency can use 
when deciding to exercise march-in rights. While march-in rights have not previously been exercised, it is uncertain if that will continue 
under the new framework. Furthermore, the increased emphasis on managed healthcare in the United States and on country and regional 
pricing and reimbursement controls in the E.U. will put additional pressure on product pricing, reimbursement and usage, which may 
adversely affect our future product sales. These pressures can arise from rules and practices of managed care groups, judicial decisions 
and governmental laws and regulations related to Medicare, Medicaid and healthcare reform, pharmaceutical reimbursement policies 
and pricing in general.

We  cannot  predict  the  likelihood,  nature,  or  extent  of  health  reform  initiatives  that  may  arise  from  future  legislation  or 

administrative action. 

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Our relationships with customers, healthcare providers, clinical trial sites and professionals and third-party payors will be 
subject to applicable anti-kickback, fraud and abuse and other laws and regulations. If we fail to comply with federal, state 
and foreign laws and regulations, including healthcare, privacy and data security laws and regulations, we could face criminal 
sanctions, civil penalties, contractual damages, reputational harm and diminished profits and future earnings.

Healthcare providers, including physicians and third-party payors play a primary role in the recommendation and prescription of 
any drug candidates for which we may obtain marketing approval. Our arrangements with customers, healthcare providers and third-
party payors may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the 
business or financial arrangements and relationships through which we develop, and may market, sell and distribute, our products for 
which we obtain marketing approval. Restrictions under applicable federal and state healthcare laws and regulations, include, but are 
not limited to, the following:

•

•

The federal healthcare anti-kickback statute prohibits, among other things, persons from knowingly and willfully soliciting, 
offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward either the referral 
of an individual for, or the purchase, order or recommendation of, any good or service, for which payment may be made 
under federally funded healthcare programs such as Medicare and Medicaid. This statute has been broadly interpreted to 
apply  to  manufacturer  arrangements  with  prescribers,  purchasers  and  formulary  managers,  among  others.  Several  other 
countries,  including  the  United  Kingdom,  have  enacted  similar  anti-kickback,  fraud  and  abuse,  and  healthcare  laws  and 
regulations.

The federal false claims laws, including the False Claims Act, which can be enforced through whistleblower or qui tam 
actions, imposes penalties against individuals or entities for knowingly presenting, or causing to be presented, to the federal 
government, claims for payment that are false or fraudulent or making a false statement to avoid, decrease or conceal an 
obligation to pay money to the federal government. The government and qui tam relators have brought False Claims Act 
actions against pharmaceutical companies on the theory that their practices have caused false claims to be submitted to the 
government. 

• HIPAA imposes criminal and civil liability for executing a scheme to defraud any healthcare benefit program. HIPAA also 
imposes  obligations,  including  mandatory  contractual  terms,  with  respect  to  safeguarding  the  privacy,  security  and 
transmission  of  individually  identifiable  health  information.  HIPAA  also  imposes  criminal  liability  for  knowingly  and 
willfully falsifying, concealing or covering up a material fact or making any materially false statement in connection with 
the delivery of or payment for healthcare benefits, items or services.

•

•

In  addition,  HIPAA,  as  amended  by  Health  Information  Technology  for  Economic  and  Clinical  Health  Act  of  2009 
(“HITECH”), imposes certain requirements on covered entities, which include certain healthcare providers, health plans and 
healthcare clearinghouses, and their business associates and covered subcontractors that receive or obtain protected health 
information  in  connection  with  providing  a  service  on  behalf  of  a  covered  entity  relating  to  the  privacy,  security  and 
transmission of individually identifiable health information.

The federal Physician Payments Sunshine Act requires manufacturers of drugs, devices, biologics and medical supplies to 
report to the HHS information related to payments and other transfers of value made to or at the request of physicians (defined 
to include doctors, dentists, optometrists, podiatrists and chiropractors), other health care professionals (such as physician 
assistants  and  nurse  practitioners),  and  teaching  hospitals,  as  well  as  information  regarding  ownership  and  investment 
interests held by physicians and their immediate family members. Payments made to physicians and research institutions for 
clinical trials are included within the ambit of this law.

• Analogous state laws and regulations, such as state anti-kickback and false claims laws, may apply to sales or marketing 
arrangements  and  claims  involving  healthcare  items  or  services  reimbursed  by  non-governmental  third-party  payors, 
including  private  insurers,  and  some  state  laws  require  pharmaceutical  companies  to  comply  with  the  pharmaceutical 
industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government in 
addition  to  requiring  drug  manufacturers  to  report  information  related  to  payments  to  physicians  and  other  health  care 
providers or marketing expenditures and state and local laws that require the registration of sales representatives.

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Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations 
will involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with 
current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our 
operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be 
subject  to  significant  civil,  criminal  and  administrative  penalties,  damages,  fines,  exclusion  from  government  funded  healthcare 
programs, such as Medicare and Medicaid, and the curtailment or restructuring of our operations. Exclusion, suspension and debarment 
from government funded healthcare programs would significantly impact our ability to commercialize, sell or distribute any drug. If any 
of the physicians or other providers or entities with whom we expect to do business are found to be not in compliance with applicable 
laws,  they  may  be  subject  to  criminal,  civil  or  administrative  sanctions,  including  exclusions  from  government  funded  healthcare 
programs.

We may be subject to costly product liability or other liability claims and may not be able to obtain adequate insurance.

The use of our drug candidates in clinical trials may result in adverse events. We cannot predict all the possible harms or adverse 
events that may result from our clinical trials. We currently maintain limited product liability insurance. We may not have sufficient 
resources to pay for any liabilities resulting from a personal injury or other claim excluded from, or beyond the limit of, our insurance 
coverage.  Our  insurance  does  not  cover  third  parties’  negligence  or  malpractice,  and  our  clinical  investigators  and  sites  may  have 
inadequate insurance or none at all. In addition, in order to conduct clinical trials or otherwise carry out our business, we may have to 
contractually  assume  liabilities  for  which  we  may  not  be  insured.  If  we  are  unable  to  look  to  our  own  insurance  or  a  third  party’s 
insurance to pay claims against us, we may have to pay any arising costs and damages ourselves, which may be substantial.

In addition, if we commercially launch drugs based on our drug candidates, we will face even greater exposure to product liability 
claims.  This  risk  exists  even  with  respect  to  those  drugs  that  are  approved  for  commercial  sale  by  the  FDA  and  foreign  regulatory 
agencies  and  manufactured  in  licensed  and  regulated  facilities.  We  intend  to  secure  additional  limited  product  liability  insurance 
coverage for drugs that we commercialize, but may not be able to obtain such insurance on acceptable terms with adequate coverage, or 
at reasonable costs. Even if we are ultimately successful in product liability litigation, the litigation would consume substantial amounts 
of our financial and managerial resources and may create adverse publicity, all of which would impair our ability to generate sales of 
the affected product and our other potential drugs. Moreover, product recalls may be issued at our discretion or at the direction of the 
FDA  and  foreign  regulatory  agencies,  other  governmental  agencies  or  companies  having  regulatory  control  for  drug  sales.  Product 
recalls are generally expensive and often have an adverse effect on the reputation of the drugs being recalled and of the drug’s developer 
or manufacturer.

We  may  be  required  to  indemnify  third  parties  against  damages  and  other  liabilities  arising  out  of  our  development, 
commercialization and other business activities, which could be costly and time-consuming and distract management. If third parties 
that have agreed to indemnify us against damages and other liabilities arising from their activities do not fulfill their obligations, then 
we may be held responsible for those damages and other liabilities.

European  data  collection  is  governed  by  restrictive  regulations  governing  the  collection,  use,  processing  and  cross-border 
transfer of personal information.

We may collect, process, use or transfer personal information from individuals located in the E.U. in connection with our business, 
including in connection with conducting clinical trials in the E.U. Additionally, if any of our product candidates are approved, we may 
seek to commercialize those products in the E.U. The collection and use of personal health data in the E.U. are governed by the provisions 
of  the  GDPR.  This  legislation  imposes  requirements  relating  to  having  legal  bases  for  processing  personal  information  relating  to 
identifiable individuals and transferring such information outside of the EEA, including to the U.S., providing details to those individuals 
regarding the processing of their personal information, keeping personal information secure, having data processing agreements with 
third parties who process personal information, responding to individuals’ requests to exercise their rights in respect of their personal 
information,  reporting  security  breaches  involving  personal  data  to  the  competent  national  data  protection  authority  and  affected 
individuals, appointing data protection officers, conducting data protection impact assessments and record-keeping. The GDPR imposes 
additional responsibilities and liabilities in relation to personal data that we process and we may be required to put in place additional 
mechanisms ensuring compliance with the new data protection rules. Failure to comply with the requirements of the GDPR and related 
national data protection laws of the member states of the E.U. may result in substantial fines, other administrative penalties and civil 
claims being brought against us, which could have a material adverse effect on our business, financial condition and results of operations.

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European data protection laws, including the GDPR, generally restrict the transfer of personal information from Europe, including 
the  EEA,  United  Kingdom  and  Switzerland,  to  the  United  States  and  most  other  countries  unless  the  parties  to  the  transfer  have 
implemented specific safeguards to protect the transferred personal information. One of the primary safeguards allowing United States 
companies to import personal information from Europe has been certification to the EU-U.S. Privacy Shield and Swiss-U.S. Privacy 
Shield  frameworks  administered  by  the  United  States  Department  of  Commerce.  However,  the  Court  of  Justice  of  the  EU  recently 
invalidated the EU-U.S. Privacy Shield. The same decision also raised questions about whether one of the primary alternatives to the 
EU-U.S.  Privacy  Shield,  namely,  the  European  Commission’s  Standard  Contractual  Clauses,  can  lawfully  be  used  for  personal 
information transfers from Europe to the United States or most other countries. At present, there are few, if any, viable alternatives to 
the EU-U.S. Privacy Shield and the Standard Contractual Clauses. Although we rely primarily on individuals’ explicit consent to transfer 
their personal information from Europe to the United States and other countries, in certain cases we have relied or may rely on the 
Standard Contractual Clauses. Authorities in the United Kingdom and Switzerland, whose data protection laws are similar to those of 
the EU, may similarly invalidate use of the EU-U.S. Privacy Shield and Swiss-U.S. Privacy Shield, respectively, as mechanisms for 
lawful personal information transfers from those countries to the United States. As such, if we are unable to rely on explicit consent to 
transfer individuals’ personal information from Europe, which can be revoked, or implement another valid compliance solution, we will 
face  increased  exposure  to  substantial  fines  under  European  data  protection  laws  as  well  as  injunctions  against  processing  personal 
information from Europe. Inability to import personal information from the EEA, United Kingdom or Switzerland may also restrict our 
clinical trial activities in Europe; limit our ability to collaborate with CROs, service providers, contractors and other companies subject 
to  European  data  protection  laws;  and  require  us  to  increase  our  data  processing  capabilities  in  Europe  at  significant  expense. 
Additionally, other countries outside of Europe have enacted or are considering enacting similar cross-border data transfer restrictions 
and  laws  requiring  local  data  residency,  which  could  increase  the  cost  and  complexity  of  delivering  our  services  and  operating our 
business.

Responding to any claims relating to improper handling, storage or disposal of the hazardous chemicals and radioactive and 
biological materials we use in our business could be time-consuming and costly.

Our research and development processes involve the controlled use of hazardous materials, including chemicals and radioactive 
and biological materials. Our operations produce hazardous waste products. We cannot eliminate the risk of accidental contamination 
or discharge and any resultant injury from those materials. Federal, state and local laws and regulations govern the use, manufacture, 
storage, handling and disposal of hazardous materials. We may be sued for any injury or contamination that results from our or third 
parties’ use of these materials. Compliance with environmental laws and regulations is expensive, and current or future environmental 
regulations may impair our research, development and production activities.

General Risk Factors

Our  failure  to  attract  and  retain  skilled  personnel  could  impair  our  drug  development,  commercialization  and  financial 
reporting activities.

Our business depends on the performance of our senior management and key scientific, commercial and technical personnel. The 
loss of the services of any member of our senior management or key scientific, technical, commercial or financial reporting staff may 
significantly delay or prevent the achievement of drug development and other business objectives by diverting management’s attention 
to transition matters and identifying suitable replacements. We also rely on consultants and advisors to assist us in formulating our 
research and development strategy. All of our consultants and advisors are either self-employed or employed by other organizations, 
and they may have conflicts of interest or other commitments, such as consulting or advisory contracts with other organizations, that 
may  affect  their  ability  to  contribute  to  us.  In  addition,  if  and  as  our  business  grows,  we  will  need  to  recruit  additional  executive 
management  and  scientific,  technical  and  financial  reporting  personnel.  There  is  intense  competition  for  skilled  executives  and 
employees with relevant scientific and technical expertise, and this competition is likely to continue. Our inability to attract and retain 
sufficient scientific, technical, commercial and managerial personnel could limit or delay our product development or commercialization 
activities, which would adversely affect the development of our drug candidates and commercialization of our potential drugs and growth 
of our business.

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Our  internal  computer  systems,  or  those  of  our  CROs,  CMOs,  supply  chain  partners,  collaboration  partners  or  other 
contractors  or  consultants,  may  fail  or  suffer  security  breaches,  which  could  result  in  a  material  disruption  of  our  drug 
development programs.

Despite  the  implementation  of  security  measures,  our  internal  computer  systems  and  those  of  our  third-party  CROs,  CMOs, 
supply chain partners, collaboration partners and other contractors and consultants are vulnerable to damage from computer viruses, 
unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. If such an event were to occur and 
cause interruptions in our operations, it could result in a material disruption of our drug development programs. For example, the loss 
of clinical study data from completed or ongoing clinical studies for any of our drug candidates could result in delays in our regulatory 
approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach 
were to result in a loss of or damage to our data or applications, or inappropriate disclosure of confidential or proprietary information, 
we could incur liability, our operations could be compromised and the further development of our product candidates could be delayed.

Significant disruptions of information technology systems or breaches of data security could adversely affect our business.

Our business is increasingly dependent on complex and interdependent information technology systems, including internet-based 
systems,  databases  and  programs,  to  support  our  business  processes  as  well  as  internal  and  external  communications.  As  use  of 
information technology systems has increased, deliberate attacks and attempts to gain unauthorized access to computer systems and 
networks have increased in frequency and sophistication. Our information technology, systems and networks are potentially vulnerable 
to breakdown, malicious intrusion and computer viruses which may result in the impairment of production and key business processes 
or loss of data or information. We are also potentially vulnerable to data security breaches—whether by employees or others—which 
may  expose  sensitive  data  to  unauthorized  persons.  We  have  in  the  past  and  may  in  the  future  be  subject  to  security  breaches.  For 
example,  in  February  2018,  we  discovered  that  our  e-mail  server  suffered  unauthorized  intrusions  in  which  proprietary  business 
information was accessed. In addition, in December 2019, one of our employee’s email account suffered an unauthorized intrusion, 
leading to the submission and inadvertent payment of a fraudulent invoice in the amount of approximately one hundred thousand dollars. 
In December 2019, our IT systems were exposed to a ransomware attack, which partially impaired certain IT systems for a short period 
of time.  Although we do not believe that we have experienced any material losses related to security breaches, including in three recent 
email “phishing” incidents or the ransomware attack, there can be no assurance that we will not suffer such losses in the future. Breaches 
and other inappropriate access can be difficult to detect and any delay in identifying them could increase their harm. While we have 
implemented measures to protect our data security and information technology systems, such measures may not prevent these events. 
Any such breaches of security and inappropriate access could disrupt our operations, harm our reputation or otherwise have a material 
adverse effect on our business, financial condition and results of operations. 

Our  facilities  in  California  are  located  near  an  earthquake  fault,  and  an  earthquake  or  other  types  of  natural  disasters, 
catastrophic events or resource shortages could disrupt our operations and adversely affect our results.

All our facilities and our important documents and records, such as hard and electronic copies of our laboratory books and records 
for our drug candidates and compounds and our electronic business records, are located in our corporate headquarters at a single location 
in South San Francisco, California near active earthquake zones. If a natural disaster, such as an earthquake, fire or flood, a catastrophic 
event such as a disease pandemic or terrorist attack, or a localized extended outage of critical utilities or transportation systems occurs, 
we could experience a significant business interruption. Our partners and other third parties on which we rely may also be subject to 
business interruptions from such events. In addition, California from time to time has experienced shortages of water, electric power 
and natural gas. Future shortages and conservation measures could disrupt our operations and cause expense, thus adversely affecting 
our business and financial results.

We expect that our stock price will fluctuate significantly, and you may not be able to resell your shares at or above your 
investment price.

The stock market, particularly in recent years, has experienced significant volatility, particularly with respect to pharmaceutical, 
biotechnology  and  other  life  sciences  company  stocks,  which  often  does  not  relate  to  the  operating  performance  of  the  companies 
represented by the stock. For example, in 2023, the closing price of our common stock on the Nasdaq Global Select Market ranged from 
$25.98 to $87.58. Factors that have caused and could cause in the future volatility in the market price of our common stock include, but 
are not limited to:

•

•

•

announcements  concerning  any  of  the  clinical  trials  for  our  drug  candidates  (including,  but  not  limited  to,  the  timing  of 
initiation or completion of such trials and the results of such trials, and delays or discontinuations of such trials, including 
delays resulting from slower than expected or suspended patient enrollment or discontinuations resulting from a failure to 
meet pre-defined clinical end points);

announcements concerning our strategic alliances;

failure or delays in entering additional drug candidates into clinical trials;

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•

•

•

failure or discontinuation of any of our research programs;

issuance of new or changed securities analysts’ reports or recommendations;

failure or delay in establishing new strategic alliances, or the terms of those alliances;

• market conditions in the pharmaceutical, biotechnology and other healthcare-related sectors;

•

•

•

•

actual or anticipated fluctuations in our quarterly financial and operating results;

developments or disputes concerning our intellectual property or other proprietary rights;

introduction of technological innovations or new products by us or our competitors;

issues in manufacturing, packaging, labeling and distribution of our drug candidates or drugs;

• market acceptance of our drugs;

•

•

•

•

•

•

•

•

third-party healthcare coverage and reimbursement policies;

FDA or other U.S. or foreign regulatory actions affecting us or our industry;

litigation or public concern about the safety of our drug candidates or drugs;

additions or departures of key personnel;

substantial sales of our common stock by our existing stockholders, whether or not related to our performance;

automated trading activity by algorithmic and high-frequency trading programs; 

volatility in the stock prices of other companies in our industry or in the stock market generally; and

other factors described in this “Risk Factors” section.

These and other external factors have caused and may cause the market price and demand for our common stock to fluctuate 
substantially, which may limit or prevent investors from readily selling their shares of common stock and may otherwise negatively 
affect the liquidity of our common stock. In addition, when the market price of a stock has been volatile, holders of that stock have 
instituted securities class action litigation against the company that issued the stock. If any of our stockholders brought a lawsuit against 
us, we could incur substantial costs defending the lawsuit. Such a lawsuit could also divert our management’s time and attention.

If securities or industry analysts publish inaccurate or unfavorable research about our business, our stock price and trading 
volume could decline.

The trading market for our common stock depends in part on the research and reports that securities or industry analysts publish 
about us or our business. If one or more of the analysts who covers us downgrades our stock or publishes inaccurate or unfavorable 
research about our business, our stock price may decline. If one or more of these analysts ceases coverage of our company or fails to 
publish reports on us regularly, demand for our stock could decrease, which might cause our stock price and trading volume to decline.

Regardless  of  accuracy,  unfavorable  interpretations  of  our  financial  information  and  other  public  disclosures  could  have  a 
negative impact on our stock price. If our financial performance fails to meet analyst estimates, for any of the reasons discussed above 
or otherwise, or one or more of the analysts who cover us downgrade our common stock or change their opinion of our common stock, 
our stock price would likely decline.

We have never paid dividends on our capital stock, and we do not anticipate paying any cash dividends in the foreseeable 
future.

We have paid no cash dividends on any of our classes of capital stock to date and we currently intend to retain our future earnings, 
if any, to fund the development and growth of our businesses. In addition, the terms of existing or any future debts may preclude us 
from paying these dividends.

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Provisions in our charter documents and under Delaware law could discourage a takeover that stockholders may consider 
favorable and may lead to entrenchment of management.

Our amended and restated certificate of incorporation and amended and restated bylaws contain provisions that may discourage, 
delay or prevent a merger, acquisition or other change in control of us that stockholders may consider favorable, including transactions 
in which you might otherwise receive a premium for your shares. These provisions also could limit the price that investors might be 
willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock. In addition, 
because our board of directors is responsible for appointing the members of our management team, these provisions may frustrate or 
prevent any attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to 
replace members of our board of directors. Among other things, these provisions: 

•

•

•

•

•

•

•

•

•

•

establish  a  classified  board  of  directors  with  three-year  staggered  terms,  which  may  delay  the  ability  of  stockholders  to 
change the membership of a majority of our board of directors;

eliminate cumulative voting in the election of directors, which limits the ability of minority stockholders to elect director 
candidates;

establish the exclusive right of our board of directors to elect a director to fill a vacancy created by the expansion of the board 
of directors or the resignation, death or removal of a director, which prevents stockholders from being able to fill vacancies 
on our board of directors;

prohibit removal of directors without cause;

authorize our board of directors to issue preferred stock and to determine the price and other terms of those shares, including 
preferences and voting rights, without stockholder approval, which could be used to significantly dilute the ownership of a 
hostile acquirer;

authorize our board of directors to alter our bylaws without obtaining stockholder approval;

require the approval of at least two-thirds of the shares entitled to vote at an election of directors to adopt, amend or repeal 
our  bylaws  or  repeal  the  provisions  of  our  amended  and  restated  certificate  of  incorporation  regarding  the  election  and 
removal of directors;

prohibit stockholder action by written consent, which forces stockholder action to be taken at an annual or special meeting 
of our stockholders;

require that a special meeting of stockholders be called only by the chairman of the board of directors, the chief executive 
officer, the president or the board of directors, which may delay the ability of our stockholders to force consideration of a 
proposal or to take action, including the removal of directors; and

provide for advance notice procedures that stockholders must comply with in order to nominate candidates to our board of 
directors or to propose matters to be acted upon at a stockholders’ meeting, which may discourage or deter a potential acquirer 
from  conducting  a  solicitation  of  proxies  to  elect  the  acquirer’s  own  slate  of  directors  or  otherwise  attempting  to  obtain 
control of us.

We are also subject to the anti-takeover provisions contained in Section 203 of the Delaware General Corporation Law. Under 
Section 203, a corporation may not, in general, engage in a business combination with any holder of 15% or more of its capital stock 
unless the holder has held the stock for three years or, among other exceptions, the board of directors has approved the transaction. 
These provisions could discourage potential acquisition proposals and could delay or prevent a change in control transaction. They could 
also have the effect of discouraging others from making tender offers for our common stock, including transactions that may be in your 
best interests. These provisions may also prevent changes in our management or limit the price that investors are willing to pay for our 
stock.

Claims for indemnification by our directors and officers may reduce our available funds to satisfy successful third-party claims 
against us and may reduce the amount of money available to us.

Our  amended  and  restated  certificate  of  incorporation  and  amended  and  restated  bylaws  provide  that  we  will  indemnify  our 

directors and officers, in each case to the fullest extent permitted by Delaware law.

In addition, as permitted by Section 145 of the Delaware General Corporation Law, our amended and restated bylaws and our 

indemnification agreements that we have entered into with our directors and officers provide that:

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• we will indemnify our directors and officers for serving us in those capacities or for serving other business enterprises at our 
request,  to  the  fullest  extent  permitted  by  Delaware  law.  Delaware  law  provides  that  a  corporation  may  indemnify  such 
person if such person acted in good faith and in a manner such person reasonably believed to be in or not opposed to the best 
interests of the registrant and, with respect to any criminal proceeding, had no reasonable cause to believe such person’s 
conduct was unlawful;

• we may, in our discretion, indemnify employees and agents in those circumstances where indemnification is permitted by 

applicable law;

• we are required to advance expenses, as incurred, to our directors and officers in connection with defending a proceeding, 
except that such directors or officers shall undertake to repay such advances if it is ultimately determined that such person is 
not entitled to indemnification;

• we will not be obligated pursuant to our amended and restated bylaws to indemnify a person with respect to proceedings 
initiated by that person against us or our other indemnitees, except with respect to proceedings authorized by our board of 
directors or brought to enforce a right to indemnification;

•

the rights conferred in our amended and restated bylaws are not exclusive, and we are authorized to enter into indemnification 
agreements with our directors, officers, employees and agents and to obtain insurance to indemnify such persons; and

• we may not retroactively amend our amended and restated bylaw provisions to reduce our indemnification obligations to 

directors, officers, employees and agents.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 1C. CYBERSECURITY

Risk management and strategy

Cytokinetics recognizes the critical importance of developing, implementing, and maintaining cybersecurity measures designed 

to safeguard our information systems and protect the confidentiality, integrity, and availability of our critical data.

Managing Material Risks & Integrated Overall Risk Management

Our cybersecurity team, led by our CISO, identifies and assesses risks from cybersecurity threats by monitoring and evaluating 
our threat environment and the Company’s risk profile using various methods including, for example, through manual and automated 
tools, internal and external audits, third-party threat assessments and third-party conducted red/blue team testing and tabletop incident 
response exercises and by subscribing to reports and services that identify cybersecurity threats, analyzing reports of threats and actors, 
conducting scans of the threat environment, evaluating our and our industry’s risk profile, evaluating threats reported to us, conducting 
threat assessments for internal and external threats and conducting vulnerability assessments.

Depending on the environment, we implement and maintain various technical, physical, and organizational measures, processes, 
standards and policies designed to manage and mitigate material risks from cybersecurity threats to our Information Systems and Data, 
including,  for  example:  maintaining  an  incident  response  plan,  a  vulnerability  management  policy,  disaster  recovery  and  business 
continuity plans and a vendor risk management program; conducting employee training, systems monitoring and penetration testing; 
implementing  security  standards,  network  security  controls,  access  controls  and  physical  security;  encrypting  and  segregating  data; 
though asset management, tracking and disposal; and maintaining cybersecurity insurance.

We  have  strategically  integrated  cybersecurity  risk  management  into  our  broader  risk  management  framework  to  promote  a 
culture  of  cybersecurity  risk  management.  This  integration  is  designed  to  make  cybersecurity  considerations  an  integral  part  of  our 
decision-making processes. Our risk management team works closely with our IT department and cybersecurity team to evaluate and 
address cybersecurity risks connected with our business objectives and operational needs.

Engage Third-parties on Risk Management

Recognizing the complexity and evolving nature of cybersecurity threats, Cytokinetics engages with a range of external experts, 
including cybersecurity assessors, consultants, and auditors in evaluating and testing our risk management systems. These partnerships 
enable  us  to  leverage  specialized  knowledge  and  insights.  Our  collaboration  with  these  third  parties  includes  periodic  audits, threat 
assessments, and consultation on security enhancements.

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Oversee Third Party Risk 

Because we are aware of the potentially material risks from cybersecurity threats associated with third-party service providers, 
Cytokinetics implements processes to oversee and manage these risks. Depending on the nature of the services provided and the identity 
of the service provider, we may conduct security assessments of the provider before engagement and may monitor their compliance 
with  our  cybersecurity  policies  after  engagement.  The  monitoring  includes  periodic  assessments  by  our  Chief  Information  Security 
Officer (“CISO”) and on an ongoing basis by our security specialists. This approach is designed to mitigate risks related to data breaches 
or other security incidents originating from third parties.

Risks from Cybersecurity Threats

For a description of the risks from cybersecurity threats that may materially affect the Company and how they may do so, see our 
risk factors under Part I. Item 1A. Risk Factors in this Annual Report on Form 10-K, including the discussion under the headings “Our 
internal  computer  systems,  or  those  of  our  CROs,  CMOs,  supply  chain  partners,  collaboration  partners  or  other  contractors  or 
consultants, may fail or suffer security breaches, which could result in a material disruption of our drug development programs” and 
“Significant disruptions of information technology systems or breaches of data security could adversely affect our business”.

Governance

Cytokinetics’ Board of Directors is aware of the critical nature of managing risks associated with cybersecurity threats. Our Board 
has established oversight mechanisms designed to ensure effective governance in managing material risks associated with cybersecurity 
threats because we recognize the significance of these threats to our operational integrity and stakeholder confidence.

Board of Directors Oversight

The  Audit  Committee  is  central  to  the  Board’s  oversight  of  cybersecurity  risks  and  bears  the  primary  responsibility  for  this 
domain. The Audit Committee is composed of board members with diverse expertise, including, risk management, technology, and 
finance.  The  Audit  Committee  reports  to  the  Board  of  Directors  periodically  regarding  cybersecurity  topics  presented  to  the  Audit 
Committee, and all materials made available to the Audit Committee are available to rest of the Board of Directors.

Management’s Role Managing Risk

The  CISO,  the  Vice  President,  Information  Technology  (“VP  of  IT”),  the  Chief  Executive  Officer  (“CEO”)  and  the  Chief 
Financial Officer (“CFO”) play a pivotal role in informing the Audit Committee on cybersecurity risks. They provide cybersecurity 
briefings to the Audit Committee on a regular basis, with a minimum frequency of once per year. These briefings encompass a broad 
range of topics, including as applicable: the current cybersecurity landscape and emerging threats, the status of ongoing cybersecurity 
initiatives and strategies, incident reports and learnings from any cybersecurity events, and compliance with regulatory requirements 
and industry practices.

In addition to our scheduled meetings, the Audit Committee, CISO, VP of IT, CEO and CFO maintain an ongoing dialogue 
regarding emerging or potential cybersecurity risks. Together, they receive updates from one another, as appropriate, on any significant 
developments in the cybersecurity domain, ensuring the Board’s oversight is proactive and responsive. The Audit Committee actively 
participates in strategic decisions related to cybersecurity, offering guidance and approval for major initiatives. This involvement ensures 
that cybersecurity considerations are integrated into the broader strategic objectives of Cytokinetics. The Audit Committee conducts an 
annual review of the company’s cybersecurity posture and the effectiveness of its risk management strategies. This review helps in 
identifying areas for improvement and ensuring the alignment of cybersecurity efforts with the overall risk management framework. 

Management Personnel in Cybersecurity

Primary responsibility for assessing, monitoring and managing our risks from cybersecurity threats rests with the CISO, Mr. Eric 
Brown. With over 10 years of experience in the field of cybersecurity and over 20 years of experience in IT more broadly, Mr. Brown 
brings a wealth of expertise to his role. His background includes extensive experience as an enterprise CISO. His in-depth knowledge 
and experience are instrumental in developing and executing our cybersecurity strategies. Our CISO oversees our governance programs, 
tests our compliance with standards, remediates known risks, and leads our employee training program.

Mr. Brown reports to the VP of IT, Mr. Daniel Casper. With over 20 years of experience in IT leadership roles in biopharma and 
industry services, Mr. Casper brings expertise in leading the effective business use of technology solutions and services to our industry. 
Our  VP  of  IT  has  overall  responsibility  for  the  Company’s  IT  department  and  operations,  including  oversight  over  the  CISO  and 
cybersecurity team to ensure efforts to contain and remediate security incidents are sufficient and effective. 

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Monitor Cybersecurity Incidents

The CISO is responsible for informing himself from appropriate sources about the latest developments in cybersecurity, including 
potential threats and innovative risk management techniques. The CISO implements and oversees processes for the monitoring of our 
information systems. This includes the deployment of security measures and system audits to identify potential vulnerabilities. In the 
event of a cybersecurity incident, the CISO is equipped with a well-defined incident response plan. This plan includes immediate actions 
designed to mitigate the impact and long-term strategies for remediation and prevention of future incidents.

Reporting to Board of Directors

The CISO, in his capacity, regularly informs the VP of IT, the CFO, the CEO, and the General Counsel or Head of Legal of 
material cybersecurity risks and incidents. This is how executive management is kept abreast of our cybersecurity posture and potentially 
material  cybersecurity  risks  facing  Cytokinetics.  Furthermore,  significant  cybersecurity  matters,  and  strategic  risk  management 
decisions are escalated by any of the CEO, the CFO and the General Counsel or Head of Legal to the Audit Committee, so that the Audit 
Committee can oversee and provide guidance on critical cybersecurity issues.

ITEM 2. PROPERTIES

Our  material  facilities  consist  of  234,892  square  feet  of  leased  office  and  laboratory  space  at  350  Oyster  Point,  South  San 

Francisco, California. Our lease over this property expires in 2033.

We believe that these facilities are suitable and adequate for our current needs.

ITEM 3. LEGAL PROCEEDINGS 

We are not currently subject to any material legal proceedings.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER 
PURCHASES OF EQUITY SECURITIES 

Market information for common stock

Our common stock is listed on the Nasdaq Global Select Market under the symbol “CYTK.” On February 27, 2024, the last 

reported sale price for our common stock was $80.99 per share.  

Performance Graph

The comparisons in the table below are required by the SEC and are not intended to forecast or be indicative of possible future 
performance of our common stock. This graph shall not be deemed “soliciting material” or be deemed “filed” for purposes of Section 
18 of the Exchange Act, or otherwise subject to the liabilities under that Section, and shall not be deemed to be incorporated by reference 
into any of our filings under the Securities Act, whether made before or after the date hereof and irrespective of any general incorporation 
language in any such filing, except to the extent we specifically incorporate it by reference into such filing.

The following graph compares cumulative total return of our common stock with the cumulative total return of (i) The NASDAQ 
Composite Index, and (ii) The NASDAQ Biotechnology Index. The graph assumes (a) $100 was invested on December 31, 2018 in 
each  of  our  common  stock,  the  stocks  comprising  the  NASDAQ  Composite  Index  and  the  stocks  comprising  the  NASDAQ 
Biotechnology Index, and (b) the reinvestment of dividends into shares of common stock; however, no dividends have been declared on 
our common stock to date.

$100 investment in stock or 
index
Cytokinetics, Inc.
Nasdaq Composite Index
Nasdaq Biotechnology Index

12/31/2018

12/31/2019

12/30/2020

12/30/2021

12/31/2022

12/31/2023

$

$

100.00
100.00
100.00

$

167.88
135.23
124.41

$

328.80
194.24
156.36

$

721.20
235.78
155.37

725.00
157.74
138.42

$ 1,321.04
226.24
143.60

Holders of Record

As of February 27, 2024, we had 45 holders of record of common stock. The number of holders of record is based upon the actual 
number of holders registered as of such date and does not include holders of shares in “street name” or persons, partnerships, associates, 
corporations or other entities in security position listings maintained by depositories.

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Table of Contents

Dividends

We have never declared or paid, and do not anticipate declaring or paying in the foreseeable future, any cash dividends on our 
capital stock. Any future determination to declare cash dividends will be made at the discretion of our board of directors, subject to 
applicable laws, and will depend on our financial condition, results of operations, capital requirements, general business conditions and 
other factors that our board of directors may deem relevant.

Unregistered Sales of Equity Securities

None.

Issuer Purchases of Equity Securities

None.

ITEM 6. [RESERVED] 

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Table of Contents

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF 
OPERATIONS 

This  discussion  and  analysis  should  be  read  in  conjunction  with  our  financial  statements  and  accompanying  notes  included 

elsewhere in this report. Operating results are not necessarily indicative of results that may occur in future periods.

Overview

We are a late-stage biopharmaceutical company focused on discovering, developing and commercializing first-in-class muscle 
activators  and  next-in-class  muscle  inhibitors  as  potential  treatments  for  debilitating  diseases  in  which  muscle  performance  is 
compromised and/or declining. We have discovered and are developing muscle-directed investigational medicines that may potentially 
improve  the  health  span  of  people  with  devastating  cardiovascular  and  neuromuscular  diseases  of  impaired  muscle  function.  Our 
research and development activities relating to the biology of muscle function have evolved from our knowledge and expertise regarding 
the  cytoskeleton,  a  complex  biological  infrastructure  that  plays  a  fundamental  role  within  every  human  cell.  As  a  leader  in  muscle 
biology and the mechanics of muscle performance, we are developing small molecule drug candidates specifically engineered to impact 
muscle function and contractility. 

Our clinical-stage drug candidates are: aficamten, a next-in-class cardiac myosin inhibitor, omecamtiv mecarbil, a novel cardiac 

myosin activator, CK-586, an additional cardiac myosin inhibitor.and CK-136, a novel cardiac troponin activator.

For further information regarding our business, refer to Part I, Item 1 (Business) of this Annual Report on Form 10-K.

Critical Accounting Policies and Significant Estimates

Our discussion and analysis of our financial condition and results of operations are based on our financial statements, which have 
been  prepared  in  accordance  with  accounting  principles  generally  accepted  in  the  United  States.  The  preparation  of  these  financial 
statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses and related 
disclosure  of  contingent  assets  and  liabilities.  We  review  our  estimates  on  an  ongoing  basis.  We  base  our  estimates  on  historical 
experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from 
these estimates under different assumptions or conditions. While our significant accounting policies are described in more detail in the 
notes to our financial statements included in this Annual Report on Form 10-K, we believe the following accounting policies to be 
critical to the judgments and estimates used in the preparation of our financial statements.

Accrued Research and Development Expenditures

Clinical  trial  costs  are  a  component  of  research  and  development  expense.  We  accrue  and  expense  clinical  trial  activities 
performed by third parties based upon actual work completed in accordance with agreements established with clinical research and 
manufacturing organizations and clinical sites. We determine the actual costs through monitoring patient enrollment, communications 
with internal personnel and external service providers regarding the progress or stage of completion of trials or services and the agreed-
upon fee to be paid for such services. 

Revenue Participation Right Purchase Agreements 

We  have  entered  into  certain  revenue  participation  right  purchase  agreements  for  omecamtiv  mecarbil  and  aficamten  with 
affiliates of Royalty Pharma, pursuant to which such affiliates purchased rights to royalties from certain revenue streams in exchange 
for consideration. We typically account for such agreements as liabilities to be amortized under the effective interest rate method over 
the life of the related royalty stream, when we have continuing involvement with the underlying R&D. We typically account for such 
agreements as deferred income to be amortized under the units-of-revenue method, when there is no continuing involvement with the 
underlying R&D. We are required to update our estimates, each reporting period, related to the amount and timing of future royalty 
payments to be paid to the counterparties of the revenue participation right purchase agreements. The estimates of the future royalty 
payment determine the measurement of the non-cash interest expense and the carrying value of the liability. 

Revenue participation right purchase agreements are measured using significant unobservable inputs. The estimates of future 
royalties requires the use of several assumptions such as: the probability of clinical success, the probability of regulatory approval, the 
estimated date of a product launch, estimates of eligible patient populations, estimates of prescribing behavior and patient behavior, 
estimates of pricing, payor reimbursement and coverage, and sales ramp. As products containing aficamten and omecamtiv mecarbil 
have not yet been commercialized, the estimates are highly subjective. 

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Table of Contents

The carrying amount of the liabilities are based on our estimate of the future royalties to be paid over the life of the arrangements 
as discounted using an imputed rate of interest. The imputed rate of interest on the RP Aficamten Liability was approximately 24.8% as 
of December 31, 2023 and 22.4% as of December 31, 2022. In 2023, the change in estimate increased our non-cash interest expense and 
net loss by $2.0 million. The imputed rate of interest on the RP OM Liability was approximately 0.2% as of December 31, 2023 and 
8.5% as of December 31, 2022. In 2023, the change in estimate decreased our non-cash interest expense and net loss by $12.8 million. 
We  periodically  assess  the  amount  and  timing  of  expected  royalty  payments  and  account  for  any  changes  in  such  estimates  on  a 
prospective basis. 

As  of  December  31,  2023,  we  have  a  total  carrying  value  of  approximately  $380.0  million  of  liabilities  related  to  revenue 

participation right purchase agreements. 

Results of Operations

A discussion of our results of operations for the year ended December 31, 2021 and year-to-year comparisons between 2022 and 
2021 can be found in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations in our 2022 
Annual Report on Form 10-K under the heading "Results of Operations."

Revenues

Our revenues since inception were primarily from our strategic alliances. We have not generated any revenue from commercial 

product sales to date.

Revenues in 2023, 2022, and 2021 were as follows (in thousands):

Research and development revenues
License revenues
Milestone revenues
Realization of revenue participation 
right purchase agreement

Total revenues

$

$

2023

Years Ended December 31,
2022
(In millions)
$

$

2021

4.0
—
3.5

6.6
—
1.0

—
7.5

$

87.0
94.6

$

Change

2023-2022

2022-2021

10.6
54.9
5.0

—
70.4

$

$

(2.6) $
0.0
2.5

(87.0)
(87.1) $

(4.0)
(54.9)
(4.0)

87.0
24.2

Research  and  development  revenues  in  2023  were  primarily  from  Astellas  for  reimbursements  under  the  Astellas  FSRA 
Agreement and from Ji Xing under the Ji Xing Agreements. In 2022, research and development revenues were primarily from Astellas 
for reimbursements under the Astellas FSRA Agreement. 

Under the Astellas FSRA Agreement, Astellas agreed to pay one-third of the out-of-pocket clinical development costs which may 
be incurred in connection with the Company’s Phase 3 clinical trial of reldesemtiv in ALS, up to a maximum contribution by Astellas 
of  $12  million.  On  March  31,  2023,  we  announced  that  we  would  be  discontinuing  COURAGE-ALS,  our  Phase  3  clinical  trial  of 
reldesemtiv in patients with ALS, and COURAGE-ALS OLE. As of December 31, 2023 we have billed and collected from Astellas up 
to the maximum contribution of $12.0 million, and no further revenue is expected under this arrangement.

Milestone revenues for 2023 consist primarily of a $2.5 mllion milestone payment from Ji Xing for the initiation of our Phase 3 

clinical trial of aficamten in patients with nHCM (ACACIA-HCM).

In 2022, we recognized revenues of $87.0 million related to the RTW Royalty Purchase Agreement. On July 14, 2020, we entered 
the RTW Royalty Purchase Agreement with RTW Royalty Holdings, pursuant to which we sold our Mavacamten Royalty under the 
Research Collaboration Agreement, dated August 24, 2012, between us and MyoKardia, Inc. to RTW Royalty Holdings for a one-time 
payment of $85.0 million. The RTW Royalty Purchase Agreement transaction closed on November 13, 2020. On March 31, 2021, RTW 
Royalty Holdings assigned its rights and obligations under the RTW Royalty Purchase Agreement to its affiliate, RTW ICAV. We 
understand that on April 18, 2022, RTW ICAV and MyoKardia, Inc. entered into agreements, which purported to assign all of RTW 
ICAV's rights, title and interest to the Mavacamten Royalty to MyoKardia, Inc., and on April 25, 2022, we entered into a tripartite 
agreement  with  RTW  ICAV  and  MyoKardia,  Inc.  acknowledging  the  release  and  discharge  of  any  further  obligations  by  us  or 
MyoKardia,  Inc.  in  connection  to  the  Mavacamten  Royalty.  As  a  result  of  the  full  extinguishment  of  the  Mavacamten  Royalty,  we 
recognized revenue of $87.0 million in 2022.

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Table of Contents

Research and Development Expenses

We incur research and development expenses associated with both partnered and our own research activities. 

Research and development expenses related to any development we elect to fund consist primarily of employee compensation, 

supplies and materials, costs for consultants and contract research and manufacturing, facilities costs and depreciation of equipment.

Research and development expenses by program for 2023, 2022, and 2021 were as follows (in thousands):

Cardiac muscle contractility
Skeletal muscle contractility
All other research programs

Total research and development 
expenses

$

$

2023

Years Ended December 31,
2022
(In millions)
$

$

2021

231.9
52.4
45.8

125.6
67.1
48.1

$

102.5
27.9
29.5

$

106.3
(14.7)
(2.3)

Change

2023-2022

2022-2021

330.1

$

240.8

$

159.9

$

89.3

$

23.1
39.2
18.6

80.9

Research and development expenses increased to $330.1 million in 2023 from $240.8 million in 2022, primarily due to higher 
expenses  for  our  clinical  development  activities  for  our  cardiac  muscle  contractility  (i.e.SEQUOIA-HCM)  and  skeletal  muscle 
contractility (i.e. COURAGE-ALS) and for early research activities. 

On March 31, 2023, we announced that we would be discontinuing COURAGE-ALS and COURAGE-ALS OLE. Research and 
development expenses for COURAGE-ALS and COURAGE-ALS OLE was $42.9 million in 2023. We expect the related expenses will 
decrease in 2024.

We continue to develop aficamten to treat both oHCM and nHCM in two phase 3 clinical trials. MAPLE-HCM is our Phase 3 
clinical trial of aficamten as a monotherapy for patients with oHCM and ACACIA-HCM is a Phase 3 clinical trial for patients with 
symptomatic nHCM. Additionally we have FOREST-HCM which is an open label extension study designed to assess the long term 
safety and tolerability of aficamten in patients with symptomatic oHCM. 

On February 28, 2023, we received a CRL from FDA in connection with our NDA for omecamtiv mecarbil for the treatment of 
HFrEF.  With  the  CRL,  FDA  communicated  that  GALACTIC-HF  is  not  sufficiently  persuasive  to  establish  substantial  evidence  of 
effectiveness for reducing the risk of heart failure events and cardiovascular death in adults with chronic heart failure with HFrEF, in 
lieu of evidence from at least two adequate and well-controlled clinical investigations. FDA stated that results from an additional clinical 
trial of omecamtiv mecarbil are required to establish substantial evidence of effectiveness for the treatment of HFrEF, with benefits that 
outweigh the risks. In 2023, we participated in a Type A meeting with FDA in order to understand FDA’s views regarding the CRL and 
what may be required to support potential approval of omecamtiv mecarbil in the United States, and subsequently submitted a formal 
dispute resolution request to FDA, with the objective to appeal the FDA's conclusion, as stated in the CRL, that substantial evidence of 
effectiveness had not been established to support approval of omecamtiv mecarbil. FDA subsequently denied our appeal in November 
2023 and reaffirmed its decision in the CRL that GALACTIC-HF is not sufficiently persuasive to establish substantial evidence of 
effectiveness for reducing the risk of heart failure events and cardiovascular death in adults with chronic heart failure with HFrEF, in 
lieu of evidence from at least two adequate and well-controlled clinical investigations.

Under our strategic alliances with Ji Xing, Ji Xing is responsible for the development of aficamten and omecamtiv mecarbil in 

China and Taiwan.

Clinical development timelines, the likelihood of success and total completion costs vary significantly for each drug candidate 
and are difficult to estimate. We anticipate that we will determine on an ongoing basis which research and development programs to 
pursue and how much funding to direct to each program, taking into account the potential scientific and clinical success of each drug 
candidate. The lengthy process of seeking regulatory approvals and subsequent compliance with applicable regulations requires the 
expenditure of substantial resources. Any failure by us to obtain and maintain, or any delay in obtaining, regulatory approvals could 
cause  our  research  and  development  expenditures  to  increase  and,  in  turn,  could  have  a  material  adverse  effect  on  our  results  of 
operations.

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Table of Contents

General and Administrative Expenses

General and administrative expenses consist primarily of compensation for employees in executive and administrative functions, 
including,  but  not  limited  to,  finance,  human  resources,  legal,  business  and  commercial  development  and  strategic  planning.  Other 
significant costs include facilities costs, consulting costs and professional fees for accounting and legal services, including legal services 
associated with obtaining and maintaining patents and regulatory compliance.

General and administrative expenses by program for 2023, 2022, and 2021 were as follows (in thousands):

Total general and administrative expenses

$

173.6

$

2023

2022
(In millions)
178.0

2021

2023-2022

2022-2021

$

96.8

$

(4.4) $

81.2

Years Ended December 31,

Change

General and administrative expenses decreased to $173.6 million in 2023 from $178.0 million in 2022, primarily due to lower 
outside  service  spend  related  to  commercial  activities,  offset  by  an  increase  in  personnel  related  costs  including  stock-based 
compensation recorded in 2023.

We expect that general and administrative expenses will increase in the future, depending in part on the timing of and investments 

in commercial readiness.

Interest Expense

Interest expense for 2023, 2022, and 2021 were as follows (in thousands):

2023

Years Ended December 31,
2022
(In millions)
$

$

2021

Change

2023-2022

2022-2021

Term loan
2026 Notes
2027 Notes
Other

Total interest expense

$

$

5.1
1.0
22.0
0.2
28.3

4.8
3.6
10.7
0.3
19.4

$

$

4.8
11.5
—
0.1
16.4

$

$

0.3
(2.6)
11.3
(0.1)
8.9

$

$

—
(7.9)
10.7
0.2
3.0

Interest expense in 2023 consists primarily of interest expense related to the RP Loan Agreement between us and RPDF and 
interest expense related to the 2026 Notes and 2027 Notes. Commensurate with our entry into the RP Loan Agreement, we terminated 
the Term Loan Agreement with Silicon Valley Bank and Oxford Finance LLC and repaid all amounts outstanding thereunder in January 
2022. The RP Loan Agreement effectively replaced the Term Loan Agreement. In July 2022, we issued the 2027 Notes and used the 
net proceeds and common stock to partially repurchase the 2026 Notes.

Non-cash interest expense on liabilities related to revenue participation right purchase agreements 

Non-cash interest expense results from the accretion of our liabilities to RPFT and RP ICAV related to the sale of future royalties 

under the RP OM RPA and the RP Aficamten RPA, respectively.

On January 7, 2022, we entered into the RP Aficamten RPA with RPI ICAV. Pursuant to the RP Aficamten RPA, RPI ICAV 
purchased  the  right  to  receive  a  percentage  of  net  sales  equal  to  4.5%  for  annual  worldwide  net  sales  of  pharmaceutical  products 
containing  aficamten  up  to  $1  billion  and  3.5%  for  annual  worldwide  net  sales  of  pharmaceutical  products  containing  aficamten  in 
excess  of  $1  billion,  subject  to  reduction  in  certain  circumstances  (the  “RP  Aficamten  Liability”).  The  carrying  amount  of  the  RP 
Aficamten Liability is based on our estimate of the future royalties to be paid to RPI ICAV over the life of the arrangement as discounted 
using  an  imputed  rate  of  interest.  The  imputed  rate  of  interest  on  the  unamortized  portion  of  the  RP  Aficamten  Liability  was 
approximately 24.8% as of December 31, 2023. 

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In 2023, we updated our analyses of the RP Aficamten RPA to reflect our assumptions resulting from ongoing global market 
research and to reflect other adjustments in connection with our anticipated commercialization, including the additional consideration 
of $50.0 million which was paid to us in September 2023 following the initiation of the first pivotal clinical trial in nHCM for aficamten. 
Our estimates regarding the amount of future royalty payments under the RP Aficamten RPA changed from the fourth quarter of 2022 
due to changes in management’s estimates of unobservable inputs related to market conditions and timing to include projections of 
future royalty payments. The resulting sales forecast for aficamten has increased year over year mainly due to the receipt of positive 
topline  results  from  SEQUOIA-HCM,  the  Phase  3  trial  for  aficamten,  in  December  2023.  The  adjustment  is  accounted  for  on  a 
prospective basis in our liability calculation and resulted in changes in our imputed interest rate and non-cash interest expense from 
22.4% and $5.2 million in the fourth quarter of 2022, 22.4% and $5.4 million in the first quarter of 2023, 19.0% and $4.9 million in the 
second quarter of 2023, 18.0% and $5.4 million in the third quarter of 2023, to 24.8% and $9.8 million in the fourth quarter of 2023.  
The non-cash interest expense was $25.5 million and $15.5 million in 2023 and 2022, respectively. In 2023, the change in estimate 
increased our non-cash interest expense and net loss by $2.0 million. The change in accounting estimate increased the net loss per share 
by $0.02 in 2023.

In 2023, we updated our analyses of the RP OM RPA to reflect our current assumptions resulting from ongoing global market 
research and to reflect other adjustments in connection with our anticipated commercialization, including the result of our receipt of a 
CRL in connection to our NDA for omecamtiv mecarbil. As a consequence of our receipt of the CRL from FDA, the royalty rate under 
the RP OM RPA will increase to no more than 5.5%. The resulting sales forecast for omecamtiv mecarbil has decreased year over year 
because commercialization and sales of omecamtiv mecarbil will be delayed. The adjustment is accounted for on a prospective basis in 
our liability calculation and resulted in changes in our imputed interest rate and non-cash interest expense from 8.5% and $4.0 million 
in the fourth quarter of 2022, 1.9% and $0.9 million in the first quarter of 2023, 2.9% and $1.4 million in the second and third quarter 
of 2023, and to 0.1% and $0.1 million in the fourth quarter of 2023, respectively. The non-cash interest expense was $3.9 million, $16.2 
million, and $12.9 million in 2023, 2022, and 2021, respectively. In 2023, the change in estimate decreased our non-cash interest expense 
and net loss by $12.8 million. The change in accounting estimate reduced the net loss per share by $0.13 in 2023.

We  review  our  assumptions  on  a  regular  basis  and  our  estimates  may  change  in  the  future  as  we  refine  and  reassess  our 

assumptions. 

Non-cash interest expense on liability related to the RP OM RPA and the RP Aficamten RPA for 2023, 2022, and 2021 were as 

follows (in thousands):

RP OM Liability
RP Aficamten Liability

Total non-cash interest expense 
recognized

$

$

Interest and Other Income, net

2023

Years Ended December 31,
2022
(In millions)
$

$

2021

3.9
25.5

16.2
15.5

$

12.9
—

(12.3) $
10.0

Change

2023-2022

2022-2021

29.4

$

31.7

$

12.9

$

(2.3) $

3.3
15.5

18.8

Interest and other income, net for 2023, 2022, and 2021 consisted primarily of interest income generated from our cash, cash 

equivalents and investments.

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Table of Contents

Liquidity and Capital Resources

Our cash, cash equivalents, and investments and a summary of our borrowings and working capital is summarized as follows: 

Financial assets:

Cash and cash equivalents
Short-term investments
Long-term investments

Total cash, cash equivalents, and marketable securities

Borrowings:

Term loan, net
2026 Notes, net
2027 Notes, net

Total borrowings

Working capital:
Current assets
Current liabilities
Working capital

December 31, 2023

December 31, 2022

(In millions)

$

$

$

$

$

$

113.0
501.8
40.5
655.3

58.4
20.8
528.2
607.4

628.1
102.7
525.4

$

$

$

$

$

$

65.6
717.0
46.7
829.3

63.8
20.7
525.1
609.6

795.2
84.6
710.6

The following table shows a summary of our cash flows for the periods set forth below: 

Net cash used in operating activities
Net cash provided by (used in) investing activities
Net cash provided by financing activities

$

Net increase (decrease) in cash, cash equivalents, and 
restricted cash

$

Sources and Uses of Cash 

2023

Years Ended December 31,
2022
(In millions)

2021

(414.3) $
239.3
221.3

(299.5) $
(262.1)
516.2

(142.5)
(147.8)
320.0

46.3

$

(45.4) $

29.7

We have funded our operations and capital expenditures with proceeds primarily from private and public sales of our equity 
securities, a royalty monetization agreement, strategic alliances, long-term debt, other financings and interest on investments. We have 
generated significant operating losses since our inception. Our expenditures are primarily related to research and development activities. 

Cash Flows Used in Operating Activities

Net cash used in operating activities of $414.3 million and $299.5 million for 2023 and 2022, respectively, was largely due to 
ongoing research and development activities and general and administrative expenses to support those activities. In 2022, the net cash 
used in operating activities was offset by collection of receivables primarily from our 2021 RTW Transactions. Net loss for 2023 and 
2022  included,  among  other  items:  non-cash  stock-based  compensation,  non-cash  interest  expense  on  liabilities  related  to  revenue 
participation right purchase agreements, and non-cash interest expense related to debt. 

Cash Flows Used in Investing Activities

Net cash provided by investing activities of $239.3 million for 2023 was primarily due to sales and maturities of investments 

offset by purchases of investments. 

Net cash used in investing activities of $262.1 million for 2022 was primarily due to purchases of investments and property and 

equipment offset by proceeds from maturity of investments.

Cash Flows Provided by Financing Activities

Net cash provided by financing activities of $221.3 million in 2023 was due to proceeds from public offerings of common stock 
of $164.2 million under the Controlled Equity Offering Sales Agreement with Cantor Fitzgerald & Co discussed below and $50.0 million 
of additional consideration associated with the 2022 RP Aficamten Royalty Purchase Agreement which was paid to us in September 
2023 and stock-based award activities.

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Net cash provided by financing activities of $516.2 million in 2022 was primarily due to proceeds related to RP Aficamten RPA 
and the RP Loan Agreement and offset by the repayment of amounts owed under our Term Loan Agreement and stock-based award 
activities. 

Royalty Pharma Transactions

On January 7, 2022, we announced that we had entered into that certain RP Loan Agreement and the RP Aficamten RPA with 
RPDF and RPI ICAV respectively, each of which were at the time of our entry into such agreements affiliated with Royalty Pharma 
International plc.

Under the RP Loan Agreement, we were initially entitled to receive up to $300.0 million in term loans, $50.0 million of which 
was  disbursed  to  us  on  closing  and  the  remaining  $250.0  million  scheduled  to  have  been  available  to  us  upon  our  satisfaction  of 
customary disbursement conditions and certain development conditions by specific deadlines, as follows: 

•

•

•

•

$50.0 million of tranche 2 term loans during the one year period following the receipt on or prior to March 31, 2023 of 
marketing approval from FDA of omecamtiv mecarbil;

$25.0 million of tranche 3 term loans during the one year period following the commercial availability of a diagnostic test 
measuring levels of omecamtiv mecarbil to support the final FDA label language applicable to such drug, subject to such 
commercial availability and the conditions to the tranche 2 term loans having occurred on or prior to March 31, 2023;

$75.0 million of tranche 4 term loans during the one year period following the receipt on or prior to September 30, 2024 of 
positive results from SEQUOIA-HCM, the Phase 3 trial for aficamten; and

$100.0 million of tranche 5 term loans during the one year period following the acceptance by the FDA on or prior to March 
31,  2025  of  an  NDA  for  aficamten,  subject  to  the  conditions  to  the  tranche  4  term  loans  having  occurred  on  or  prior  to 
September 30, 2024.

As a result of our receipt of a CRL in connection to our NDA for omecamtiv mecarbil, we have not satisfied the conditions to the 

availability of the tranche 2 and tranche 3 loans under the RP Loan Agreement. 

In December 2023, we announced positive topline results from SEQUOIA-HCM, the Phase 3 trial for aficamten. This entitled us 
to receive $75.0 million under tranche 4 during the one year period following the receipt of the positive results and requires us to draw 
a minimum of at least $50.0 million of the $75.0 million available under tranche 4.

The remaining $100.0 million under tranche 5 remains available for disbursement to us, subject to satisfaction of the conditions 

described above.

Each term loan under the RP Loan Agreement matures on the 10 year anniversary of the funding date for such term loan and is 
repayable  in  quarterly  installments  of  principal,  interest  and  fees  commencing  on  the  last  business  day  of  the  seventh  full  calendar 
quarter following the calendar quarter of the applicable funding date for such term loan, with the aggregate amount payable in respect 
of each term loan (including interest and other applicable fees) equal to 190% of the principal amount of the tranche 1, tranche 4 and 
tranche 5 term loans and 200% of the principal amount of the tranche 2 and tranche 3 loans (such amount with respect to each term loan, 
“Final Payment Amount”). We have made our first payment in the fourth quarter of 2023.

We may prepay the term loans in full (but not in part) at any time at our option by paying an amount equal to the unpaid portion 
of Final Payment Amount for the outstanding term loans under the RP Loan Agreement; provided that if the conditions for either the 
tranche 4 term loans or the tranche 5 term loans have been met, we must have borrowed at least $50 million principal amount of the 
tranche 4 or 5 term loans. In addition, the term loans under the RP Loan Agreement are repayable in full at the option of either us or the 
lender in an amount equal to the unpaid portion of Final Payment Amount for the outstanding term loans upon a change of control of 
Cytokinetics.

In addition, on January 7, 2022, we entered into the RP Aficamten RPA with RPI ICAV, pursuant to which RPI ICAV purchased 
rights to certain revenue streams from net sales of pharmaceutical products containing aficamten by us, our affiliates and our licensees 
in exchange for up to $150.0 million in consideration, $50.0 million of which was paid on the closing date, $50.0 million of which was 
paid to us in March 2022 following the initiation of the first pivotal trial in oHCM for aficamten, and $50.0 million of which was paid 
to us in September 2023 following the initiation of the first pivotal clinical trial in nHCM for aficamten. 

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The RP Aficamten RPA also provides that the parties will negotiate terms for additional funding if we achieve proof of concept 
results in certain other indications for aficamten, with a reduction in the applicable royalty if we and RPI ICAV fail to agree on such 
terms in certain circumstances.

Pursuant to the RP Aficamten RPA, RPI ICAV purchased the right to receive a percentage of net sales equal to 4.5% for annual 
worldwide  net  sales  of  pharmaceutical  products  containing  aficamten  up  to  $1  billion  and  3.5%  for  annual  worldwide  net  sales  of 
pharmaceutical products containing aficamten in excess of $1 billion, subject to reduction in certain circumstances.

Convertible Notes 

On November 13, 2019, we issued $138.0 million aggregate principal amount of 2026 Notes. On July 6, 2022, we issued $540.0 
million aggregate principal amount of 2027 Notes and used approximately $140.3 million of the net proceeds from the offering of 2027 
Notes and issued 8,071,343 shares of common stock to repurchase approximately $116.9 million aggregate principal amount of the 2026 
Notes pursuant to privately negotiated exchange agreements entered into with certain holders of the 2026 Notes concurrently with the 
pricing of the offering of the 2027 Notes. As a result of the partial repurchase of the 2026 Notes, we recorded an inducement loss of 
$22.2 million, consisting of the difference between the consideration to the holders pursuant to the exchange agreements and the if-
converted value of the 2026 Notes under the original terms. As of December 31, 2023, there remains $21.1 million aggregate principal 
amount of 2026 Notes outstanding and $540.0 million of aggregate principal amount of 2027 Notes outstanding. The 2026 Notes are 
redeemable, in whole or in part, at our option at any time, and from time to time, and, in the case of any partial redemption, on or before 
the 60th scheduled trading day before the maturity date, at a cash redemption price equal to the principal amount of the 2026 Notes to 
be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date but only if the last reported sale price per 
share of our common stock exceeds 130% of the conversion price on (1) each of at least 20 trading days, whether or not consecutive, 
during the 30 consecutive trading days ending on, and including, the trading day immediately before the date we may send the related 
redemption notice; and (2) the trading day immediately before the date we may send such notice.

2021 Ji Xing and RTW Transactions

On December 20, 2021, we entered into the Ji Xing OM License Agreement, pursuant to which we granted to Ji Xing an exclusive 
license to develop and commercialize omecamtiv mecarbil in China and Taiwan. Under the terms of the Ji Xing OM License Agreement, 
we received a $50.0 million nonrefundable payment from Ji Xing comprised of a $40.0 million payment as consideration for the rights 
granted by us to Ji Xing and $10.0 million attributable to our having submitted to FDA an NDA for omecamtiv mecarbil. We may be 
eligible to receive from Ji Xing additional payments totaling up to $330.0 million for the achievement of certain commercial milestone 
events in China in connection to omecamtiv mecarbil. In addition, Ji Xing will pay us tiered royalties in the mid-teens to the low twenties 
range on the net sales of pharmaceutical products containing omecamtiv mecarbil in China and Taiwan, subject to certain reductions for 
generic competition, patent expiration and payments for licenses to third party patents. The Ji Xing OM License Agreement, unless 
terminated earlier, will continue on a market-by-market basis until expiration of the relevant royalty term. We recognized a $2.5 million 
milestone from Ji Xing in 2023 for the initiation of a phase 3 clinical trial for aficamten in nHCM, which was collected in the fourth 
quarter of 2023.

In addition to the Ji Xing OM License Agreement, we entered into common stock purchase agreements with each of the RTW 
Investors, pursuant to which we sold and issued an aggregate of 0.5 million shares of our common stock at a price per share of $39.125 
and an aggregate purchase price of $20.0 million. 

Controlled Equity Offering Sales Agreement with Cantor Fitzgerald & Co.

On March 1, 2023, we entered into the Amended ATM Facility, with Cantor, under which we may offer and sell, from time to 
time at our sole discretion, shares of the Common Stock having an aggregate offering price of up to $300.0 million through Cantor, as 
sales agent. The Amended ATM Facility amends, restates and supersedes the Controlled Equity Offering Sales Agreement dated as of 
March 6, 2019 between the Company and Cantor.

Cantor may sell the Common Stock by any method that is deemed to be an “at the market offering” as defined in Rule 415 of the 
Securities Act of 1933, as amended, including sales made directly on the Nasdaq Global Select Market or any other trading market for 
our common stock. Cantor will use commercially reasonable efforts to sell the Common Stock from time to time, based upon instructions 
from us (including any price, time or size limits or other customary parameters or conditions we may impose). We will pay Cantor a 
commission of up to 3.0% of the aggregate gross sales proceeds of any common stock sold through Cantor under the Amended ATM 
Facility, and also have provided Cantor with customary indemnification rights.

In 2023, we issued 5,016,170 shares of our common stock for net proceeds of $164.2 million pursuant to the Amended ATM 

Facility.

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Future Uses of Cash

In future periods, we expect to incur substantial costs as we continue to expand our research programs and related research and 
development activities. We expect to incur significant research and development expenses as we advance the research and development 
of compounds from our other muscle biology programs through research to candidate selection to clinical development, and we plan to 
file one to two investigational new drug applications in 2023. We may also incur significant sales and marketing expenses in anticipation 
of regulatory approval of one of our drug candidates.

Our future capital uses and requirements depend on numerous factors. These factors include, but are not limited to, the following:

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

the initiation, progress, timing, scope and completion of preclinical research, non-clinical development, CMC, and clinical 
trials for our drug candidates and other compounds;

the time and costs involved in obtaining regulatory approvals;

the  jurisdictions  in  which  we  are  granted  regulatory  approvals  and  thus  are  able  to  successfully  launch  our  products  for 
commercial sale;

delays that may be caused by requirements of regulatory agencies;

our level of funding for the development of current or future drug candidates;

the number of drug candidates we pursue and the stage of development that they are in;

the costs involved in filing and prosecuting patent applications and enforcing or defending patent claims;

our  ability  to  establish  and  maintain  selected  strategic  alliances  required  for  the  development  of  drug  candidates  and 
commercialization of our potential drugs;

our plans or ability to expand our drug development capabilities, including our capabilities to conduct clinical trials for our 
drug candidates;

our plans or ability to engage third-party manufacturers for our drug candidates and potential drugs;

our plans or ability to build or access sales and marketing capabilities and to achieve market acceptance for potential drugs;

the expansion and advancement of our research programs;

the hiring of additional employees and consultants;

the acquisition of technologies, products and other business opportunities that require financial commitments;

our revenues, if any, from successful development of our drug candidates and commercialization of potential drugs;

the cost of additional construction to expand our headquarters in South San Francisco and in relation to our leased office 
facilities in Radnor, Pennsylvania; and

the payments due for interest on the term loan and convertible debt;

We have incurred an accumulated deficit of approximately $2.1 billion since inception and there can be no assurance that we will 
attain profitability. We are subject to risks common to clinical-stage companies including, but not limited to, development of new drug 
candidates, dependence on key personnel, and the ability to obtain additional capital as needed to fund our future plans. Our liquidity 
will be impaired if sufficient additional capital is not available on terms acceptable to us, if at all. Until we achieve profitable operations, 
we intend to continue to fund operations through payments from strategic collaborations, additional sales of equity securities, grants and 
other financings. We have never generated revenues from commercial sales of our drugs and may not have drugs to market for at least 
several  years,  if  ever.  Therefore,  our  success  is  dependent  on  our  ability  to  obtain  additional  capital  by  entering  into  new  strategic 
collaborations and/or through financings, and ultimately on our and our collaborators’ ability to successfully develop and market one or 
more of our drug candidates. We cannot be certain that sufficient funds will be available from such collaborators or financings when 
needed  or  on  satisfactory  terms.  Additionally,  there  can  be  no  assurance  that  any  of  our  drug  candidates  will  be  accepted  in  the 
marketplace or that any future products can be developed or manufactured at an acceptable cost. These factors could have a material 
adverse effect on our future financial results, financial position and cash flows.

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Based on the current status of our development plans, we believe that our existing cash and cash equivalents, investments and 
interest earned on investments will be sufficient to meet our projected operating requirements for at least the next 12 months. If, at any 
time, our prospects for internally financing our research and development programs decline, we may decide to reduce research and 
development expenses by delaying, discontinuing or reducing our funding of development of one or more of our drug candidates or of 
other  research  and  development  programs.  Alternatively,  we  might  raise  funds  through  strategic  relationships,  public  or  private 
financings or other arrangements. There can be no assurance that funding, if needed, will be available on attractive terms, or at all, or in 
accordance with our planned timelines. Furthermore, financing obtained through future strategic relationships may require us to forego 
certain  commercialization  and  other  rights  to  our  drug  candidates.  Similarly,  any  additional  equity  financing  may  be  dilutive  to 
stockholders and debt financing, if available, may involve restrictive covenants. Our failure to raise capital as and when needed could 
have a negative impact on our financial condition and our ability to pursue our business strategy.

Segment Information

We have one primary business activity and operate in one reportable segment.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risks in the ordinary course of our business. These risks primarily include risk related to interest rate 

sensitivities.

Market Risk and Interest Rate Risk

We are exposed to market risk related to changes in interest rates. As of December 31, 2023, we had cash and investments of 
$655.4  million,  which  consist  of  U.S.  Treasury  securities,  U.S.  and  non-U.S.  government  agency  bonds,  commercial  paper,  global 
portfolio of corporate debt, money market fund, and repurchase agreements backed by U.S. Treasury securities. To reduce the volatility 
relating to these exposures, we have put investment and risk management policies and procedures in place. The primary objective of our 
investment activities is to preserve capital to fund our operations. We do not enter into investments for trading or speculative purposes 
and have not used any derivative financial instruments to manage our interest rate risk exposure. Our investments are subject to interest 
rate risk and could fall in value if market interest rates increase. We have not been exposed to, nor do we anticipate being exposed to, 
material risks due to changes in interest rates. A 1% increase or decrease in current interest rates would not have a material effect on our 
financial results.

We had $21.1 million under 2026 Notes with a fixed rate of 4.0% and $540.0 million under 2027 Notes with a fixed rate of 3.5% 
outstanding  as  of  December 31,  2023.  The  convertible  notes  issued  at  fixed  interest  rates  are  exposed  to  fluctuations  in  fair  value 
resulting from changes in market price and interest rates. We do not record our convertible debt at fair value but present the fair value 
for disclosure purposes (see Note 7 to our Consolidated Financial Statements). As of December 31, 2022, the fair value of the 2026 
Notes and 2027 Notes was estimated at $168.4 million and $990.4 million using quoted market prices. 

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ITEM 8. 

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm (PCAOB ID 42) ............................................................................
Consolidated Balance Sheets .......................................................................................................................................................
Consolidated Statements of Operations and Comprehensive Loss..............................................................................................
Consolidated Statements of Stockholders’ (Deficit) Equity ........................................................................................................
Consolidated Statements of Cash Flows......................................................................................................................................
Notes to Consolidated Financial Statements................................................................................................................................

Page

76 
78 
79 
80 
81 
82 

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders
Cytokinetics, Incorporated

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Cytokinetics, Incorporated (the “Company”) as of December 31, 
2023 and 2022, the related consolidated statements of operations and comprehensive loss, stockholders’ (deficit) equity, and cash 
flows for each of the three years in the period ended December 31, 2023, and the related notes (collectively referred to as the 
“consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the 
financial position of the Company at December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the 
three years in the period ended December 31, 2023, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the Company’s internal control over financial reporting as of December 31, 2023, based on criteria established in Internal 
Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 
Framework) and our report dated February 28, 2024 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the 
Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to 
be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and 
regulations of the Securities and Exchange Commission and the PCAOB. 

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit 
to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. 
Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to 
error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence 
regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used 
and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe 
that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was 
communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material 
to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the 
critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, 
by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or 
disclosures to which it relates.

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Description of the 
Matter

How We Addressed 
the Matter in Our 
Audit

Measurement of Revenue Participation Right Purchase Agreements

As of December 31, 2023, the liabilities related to revenue participation right purchase agreements, net were 
$380.0  million.  The  Company  recognized  non-cash  interest  expense  on  the  liabilities  related  to  revenue 
participation right purchase agreements of $29.4 million for the year ended December 31, 2023. As described 
in Note 6 to the consolidated financial statements, the Company has entered into agreements, pursuant to which
counterparties  purchased  rights  to  receive  royalty  streams  from  the  net  sales  of  pharmaceutical  products 
containing Aficamten and Omecamtiv Mecarbil. The cash received by the Company from these royalty purchase
agreements was initially recognized as a liability related to revenue participation right purchase agreements. 
The Company is required to update its estimate, each reporting period, related to the amount and timing of future
royalty payments to be paid to the counterparties of the revenue participation right purchase agreements.  The 
estimates of the future royalty payment determine the measurement of the non-cash interest expense and the 
carrying value of the liability. 

Auditing the Company’s measurement of the revenue participation right purchase agreements was complex due 
to the significant estimation uncertainty in projecting future royalty payments to be paid to the counterparties 
of the revenue participation right purchase agreements.  The estimates of future royalties requires the use of 
several  assumptions  such  as:  the  probability  of  clinical  success,  the  probability  of  regulatory  approval,  the
estimated date of a product launch, estimates of eligible patient populations, estimates of prescribing behavior 
and patient behavior, estimates of pricing and payor reimbursement and coverage, and sales ramp.  As products
containing Aficamten and Omecamtiv Mecarbil have not yet been commercialized, the estimates are highly
subjective. 

We obtained an understanding, evaluated the design, and tested the operating effectiveness of controls over the
Company’s processes for estimating the amount and timing of future royalty payments.

To  test  the  amount  and  timing  of  future  royalty  payments  to  be  paid  to  the  counterparties  of  the  revenue 
participation  right  purchase  agreements,  our  audit  procedures  included,  among  others,  evaluating  the 
reasonableness  of  significant  assumptions  used  by  management.  Evaluating  the  reasonableness  of
management’s assumptions included consideration of (i) relevant industry forecasts and data, (ii) consistency
with observable data for competitor products, and (iii) whether the assumptions were consistent with evidence 
obtained in other areas of the audit.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2018.
San Jose, California
February 28, 2024

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CYTOKINETICS, INCORPORATED

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share data)

ASSETS
Current assets:

Cash and cash equivalents
Short-term investments
Accounts receivable
Prepaid expenses and other current assets

Total current assets
Long-term investments
Property and equipment, net
Operating lease right-of-use assets
Other assets

Total assets

LIABILITIES AND STOCKHOLDERS’ DEFICIT
Current liabilities:

Accounts payable
Accrued liabilities
Short-term operating lease liabilities
Current portion of long-term debt
Other current liabilities

Total current liabilities

Term loan, net
Convertible notes, net
Liabilities related to revenue participation right purchase agreements, net
Long-term operating lease liabilities
Other non-current liabilities

Total liabilities

Commitments and contingencies
Stockholders’ deficit:

Preferred stock, $0.001 par value:

Authorized: 10,000,000 shares; Issued and outstanding: none

Common stock, $0.001 par value:
Authorized: 163,000,000 shares
Issued and outstanding: 101,637,922 shares at December 31, 2023
   and 94,833,975 shares at December 31, 2022

Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit

Total stockholders’ deficit
Total liabilities and stockholders’ deficit

December 31,

2023

2022

$

$

$

113,024
501,800
1,283
11,944
628,051
40,534
68,748
78,987
7,996
824,316

21,507
42,641
17,891
10,080
10,559
102,678
58,384
548,989
379,975
120,427
186
1,210,639

65,582
716,995
147
12,462
795,186
46,708
80,453
82,737
9,691
1,014,775

25,611
44,096
12,829
958
1,123
84,617
63,810
545,808
300,501
126,895
1,044
1,122,675

—

—

102
1,725,823
(10)
(2,112,238)
(386,323)
824,316

$

94
1,481,590
(3,590)
(1,585,994)
(107,900)
1,014,775

$

$

$

$

The accompanying notes are an integral part of these consolidated financial statements. 

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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

CYTOKINETICS, INCORPORATED

(In thousands, except per share data)

Revenues:

Research and development revenues
License revenues
Milestone revenues
Realization of revenue participation right purchase agreement

Total revenues
Operating expenses:

Research and development
General and administrative
Total operating expenses

Operating loss

Interest expense
Loss on extinguishment of debt
Non-cash interest expense on liabilities related to revenue 
participation right purchase agreements
Interest and other income, net

Net loss
Net loss per share — basic and diluted
Weighted-average number of shares used in computing net loss per 
share — basic and diluted
Other comprehensive gain (loss):

Unrealized gain (loss) on available-for-sale securities, net
Foreign currency translation adjustments

Comprehensive loss

2023

Years Ended December 31,
2022

2021

$

$
$

$

4,030
—
3,500
—
7,530

330,123
173,612
503,735
(496,205)
(28,306)
—

(29,362)
27,629
(526,244)
(5.45)

96,524

3,600
(20)
(522,664)

$

$
$

$

6,588
—
1,000
87,000
94,588

240,813
177,977
418,790
(324,202)
(19,414)
(24,939)

(31,742)
11,342
(388,955)
(4.33)

89,825

(2,721)
—
(391,676)

$

$
$

$

10,572
54,856
5,000
—
70,428

159,938
96,803
256,741
(186,313)
(16,440)
—

(12,892)
331
(215,314)
(2.80)

76,886

(1,018)
—
(216,332)

The accompanying notes are an integral part of these consolidated financial statements.

79

Accumulated
Other
Comprehensive
Loss

Accumulated
Deficit

Total
Stockholders’
(Deficit) Equity

Table of Contents

CYTOKINETICS, INCORPORATED
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ (DEFICIT) EQUITY 
(In thousands, except shares)

Balance, December 31, 2020
Exercise of stock options
Vesting of restricted stock units,
   net of taxes withheld
Net share settlement
Underwritten public offering of 
   common stock, net of discounts, 
   commissions and offering cost
Issuance of common stock upon private placement
Issuance of common stock under
   Employee Stock Purchase Plan
Stock-based compensation
Other comprehensive loss
Net loss

Balance, December 31, 2021
ASU 2020-06 adoption
Exercise of stock options
Issuance of common stock under restricted stock 
units
Shares withheld related to net share settlement of 
equity awards
Issuance of common stock under
   Employee Stock Purchase Plan
Induced conversion of convertible notes
Exercise of warrants
Settlement of capped call on 2026 Notes
Stock-based compensation
Other comprehensive loss
Net loss

Balance, December 31, 2022
Exercise of stock options
Vesting of restricted stock units
Shares withheld related to net share settlement of 
equity awards
Issuance of common stock under
   Employee Stock Purchase Plan
Issuance of common stock under at-the-market 
offering, net of issuance costs
Stock-based compensation
Other comprehensive income
Net loss

Balance, December 31, 2023

Common Stock

Shares
71,015,183
1,304,347

Amount
70
$
3

Additional
Paid-In
Capital
$ 1,105,470
11,017

360,050
—

11,500,000
511,182

108,780
—
—
—
84,799,542
—
1,389,031

707,772

(260,172)

98,153
8,071,343
28,306
—
—
—
—
94,833,975
1,193,325
721,216

(262,829)

136,065

—
—

11
—

—
—
—
—
84
—
2

—

—

—
8
—
—
—
—
—
94
2
1

—

—

(4,449)
(418)

296,894
15,144

1,778
26,832
—
—
1,452,268
(49,476)
14,314

—

(9,602)

3,227
(3,386)
—
26,392
47,853
—
—
1,481,590
14,317
—

(10,517)

4,140

$

$

149
—

(992,306)
—

$

—
—

—
—

—
—
(1,018)
—
(869)
—
—

—

—

—
—
—
—
—
(2,721)
—
(3,590)
—
—

—

—

—
—

—
—

—
—
—
(215,314)
(1,207,620)
10,581
—

—

—

—
—
—
—
—
—
(388,955)
(1,585,994)
—
—

—

—

5,016,170
—
—
—
101,637,922

$

5
—
—
—
102

164,228
72,065
—
—
$ 1,725,823

$

—
—
3,580
—
(10)

—
—
—
(526,244)
$ (2,112,238)

$

113,383
11,020

(4,449)
(418)

296,905
15,144

1,778
26,832
(1,018)
(215,314)
243,863
(38,895)
14,316

—

(9,602)

3,227
(3,378)
—
26,392
47,853
(2,721)
(388,955)
(107,900)
14,319
1

(10,517)

4,140

164,233
72,065
3,580
(526,244)
(386,323)

The accompanying notes are an integral part of these consolidated financial statements.

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CYTOKINETICS, INCORPORATED
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)

2023

Years Ended December 31,
2022

2021

$

(526,244)

$

(388,955)

$

(215,314)

Cash flows from operating activities:

Net loss
Adjustments to reconcile net loss to net cash used in operating activities:

Non-cash interest expense on liabilities related to revenue participation right purchase 
agreement
Stock-based compensation expense
Non-cash lease expense
Impairment of right-of-use assets
Depreciation of property and equipment
Realized gain on investment, net
Interest receivable and amortization on investments
Non-cash interest expense related to debt
Loss on extinguishment of debt
Loss on inducement of convertible debt
Changes in operating assets and liabilities:

Accounts receivable
Prepaid and other assets
Accounts payable
Accrued and other liabilities
Deferred revenue
Operating lease liabilities
Other non-current liabilities

Net cash used in operating activities

Cash flows from investing activities:

Purchases of investments
Maturities of investments
Sales of investments
Purchases of property and equipment

Net cash provided by (used in) investing activities

Cash flows from financing activities:
Repayment of finance lease liabilities
Repayment of term loan
Debt extinguishment costs
Repayment of convertible debt
Proceeds from issuance of convertible debt, net
Proceeds from public offerings of common stock, net of discounts, commissions and 
offering cost
Proceeds from private placement, net
Proceeds from 2022 RPI Transactions, net
Proceeds from issuance of common stock related to at-the-market offering, net of 
issuance costs
Proceeds from issuance of common stock under equity incentive and stock purchase 
plans
Taxes paid related to net share settlement of equity awards
Cash settlement of capped call options associated with 2026 Notes

Net cash provided by financing activities

Effect of exchange rate changes
Net increase (decrease) in cash, cash equivalents, and restricted cash
Cash, cash equivalents, and restricted cash, beginning of period
Cash, cash equivalents, and restricted cash, end of period

Supplemental cash flow disclosures:

Cash paid for interest

Non-cash investing and financing activities:

Right-of-use assets recognized in exchange for operating lease obligations
Right-of-use assets recognized in exchange for finance lease obligations
Amounts unpaid for purchases of property and equipment
Issuance of common stock in connection with repurchase of convertible note

$

$

$
$
$
$

29,474
72,065
3,750
—
11,892
35
(15,735)
7,341
—
—

(1,136)
1,596
(3,483)
17,103
—
(1,406)
(9,585)
(414,333)

(635,211)
870,905
4,975
(1,416)
239,253

(858)
—
—
—
—

—
—
50,000
164,233

18,459
(10,517)
—
221,317
(20)
46,217
67,182
113,399

10,295

$

$

— $
— $
— $
— $

31,858
47,853
2,585
—
5,814
107
(4,710)
5,697
2,693
22,246

56,672
(7,414)
4,524
10,844
(87,000)
1,728
(4,058)
(299,516)

(855,393)
604,594
—
(11,335)
(262,134)

(944)
(47,651)
(2,409)
(140,330)
523,586

—
—
149,581
—

17,543
(9,602)
26,392
516,166
—
(45,484)
112,666
67,182

15,165

10,904
1,055
621
317,123

$

$

$
$
$
$

13,004
26,832
7,361
2,844
2,276
—
4,894
7,125
—
—

(47,399)
(7,381)
1,055
15,060
—
43,472
3,649
(142,522)

(525,042)
422,837
3,300
(48,872)
(147,777)

—
—
—
—
—

296,905
15,144
—
—

12,380
(4,449)
—
319,980
—
29,681
82,985
112,666

9,175

80,395
1,294
11,982
—

The accompanying notes are an integral part of these consolidated financial statements.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

CYTOKINETICS, INCORPORATED
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1 — Organization and Accounting Policies

Organization

Cytokinetics, Incorporated (the “Company”, “we” or “our”) was incorporated under the laws of the state of Delaware on August 
5, 1997. We are a late-stage biopharmaceutical company focused on the discovery and development of novel small molecule therapeutics 
that modulate muscle function for the potential treatment of serious diseases and medical conditions.

Our  financial  statements  contemplate  the  conduct  of  our  operations  in  the  normal  course  of  business.  We  have  incurred  an 
accumulated deficit of approximately $2.1 billion since inception and there can be no assurance that we will attain profitability. We had 
a  net  loss  of  $526.2  million  and  net  cash  used  in  operations  of  $414.3  million  for  the  year  ended  December 31,  2023.  Cash,  cash 
equivalents, and investments decreased to $655.4 million as of December 31, 2023 from $829.3 million as of December 31, 2022. We 
anticipate that we will have operating losses and net cash outflows in future periods.

We are subject to risks common to late-stage biopharmaceutical companies including, but not limited to, development of new 
drug  candidates,  dependence  on  key  personnel,  and  the  ability  to  obtain  additional  capital  as  needed  to  fund  our  future  plans.  Our 
liquidity will be impaired if sufficient additional capital is not available on terms acceptable to us. To date, we have funded operations 
primarily  through  sales  of  our  common  stock,  contract  payments  under  our  collaboration  agreements,  sales  of  future  revenues  and 
royalties, debt financing arrangements, government grants and interest income. Until we achieve profitable operations, we intend to 
continue  to  fund  operations  through  payments  from  strategic  collaborations,  additional  sales  of  equity  securities,  grants  and  debt 
financings. We have never generated revenues from commercial sales of our drugs and may not have drugs to market for several years, 
if  ever.  Our  success  is  dependent  on  our  ability  to  enter  into  new  strategic  collaborations  and/or  raise  additional  capital  and  to 
successfully develop and market one or more of our drug candidates. We cannot be certain that sufficient funds will be available from 
such a financing or through a collaborator when required or on satisfactory terms. Additionally, there can be no assurance that our drug 
candidates will be accepted in the marketplace or that any future products can be developed or manufactured at an acceptable cost. These 
factors could have a material adverse effect on our future financial results, financial position and cash flows.

Based on the current status of our research and development activities, we believe that our existing cash, cash equivalents, and 
investments will be sufficient to fund cash requirements for at least the next 12 months after the issuance of these consolidated financial 
statements. If, at any time, our prospects for financing our research and development programs decline, we may decide to reduce research 
and development expenses by delaying, discontinuing or reducing our funding of one or more of our research or development programs. 
Alternatively, we might raise funds through strategic collaborations, public or private financings or other arrangements. Such funding, 
if needed, may not be available on favorable terms, or at all. The financial statements do not include any adjustments that might result 
from the outcome of this uncertainty.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that 
affect the reported amounts of assets and liabilities and disclosures of contingent liabilities at the date of the financial statements and 
the reported amounts of revenues and expenses during the reporting periods. We evaluate our estimates on an ongoing basis. We base 
our  estimates  on  our  historical  experience  and  also  on  assumptions  that  we  believe  are  reasonable;  however,  actual  results  could 
significantly differ from those estimates.

Basis of Presentation

The consolidated financial statements include the accounts of Cytokinetics, Incorporated and its wholly-owned subsidiaries and 
have been prepared in accordance with GAAP. Intercompany transactions and balances have been eliminated in consolidation. Certain 
prior period amounts have been reclassified to conform the prior period presentation to the current year. 

Concentration of Credit Risk and Other Risks and Uncertainties

Financial instruments that potentially subject us to concentrations of risk consist principally of cash, cash equivalents, restricted 

cash, investments, and accounts receivable.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Our cash, cash equivalents, restricted cash, and investments held with large financial institutions in the United States and deposits 

may exceed the Federal Deposit Insurance Corporation’s insurance limit.

Drug candidates we develop may require approvals or clearances from the FDA or other regulatory agencies prior to commercial 
sales. There can be no assurance that our drug candidates will receive any of the required approvals or clearances. If we were to be 
denied approval, or clearance or any such approval or clearance was to be delayed, it would have a material adverse impact on us.

Cash, Cash Equivalents, and Restricted Cash

We consider all highly liquid investments with a maturity of three months or less at the time of purchase to be cash equivalents, 
which  consist  of  money  market  funds  and  repurchase  agreements  backed  by  U.S.  Treasury  securities.  Repurchase  agreements  are 
collateralized by US Treasury securities for an amount not less than 102% of their value and are reported at a carrying value which 
approximates fair value due to their short duration.

A reconciliation of cash, cash equivalents, and restricted cash reported in our consolidated balance sheets to the amount reported 

within our consolidated statements of cash flows was as follows (in thousands):

Cash and cash equivalents
Restricted cash

Total cash, cash equivalents, and restricted cash as reported 
within our consolidated statement of cash flows

December 31,

2023

2022

$

$

113,024
375

113,399

$

$

65,582
1,600

67,182

As of December 31, 2023, our restricted cash balance of $0.4 million is used to collateralize letters of credit.

Investments

Our investments consist of U.S. Treasury securities, U.S. government agency securities, commercial paper, corporate obligations, 
and money market funds. We designate all investments as available-for-sale and report them at fair value, based on quoted market prices, 
with unrealized gains and losses recorded in accumulated other comprehensive loss. The cost of securities sold is based on the specific-
identification method. Investments with original maturities greater than three months and remaining maturities of one year or less are 
classified as short-term investments. Investments with remaining maturities greater than one year are classified as long-term investments. 

All  of  our  available-for-sale  investments  are  subject  to  a  periodic  impairment  review.  For  each  available-for-sale  investment 
whose fair value is below its amortized cost, we determine if the impairment is a result of a credit-related loss or other factors using both 
quantitative and qualitative factors. If the impairment is a result of a credit-related loss, we recognize an allowance for credit losses. If 
the impairment is not a result of a credit loss, we recognize the loss in other comprehensive loss. 

Property and Equipment, net

Property and equipment are stated at cost less accumulated depreciation and are depreciated on a straight-line basis over the 
estimated  useful  lives  of  the  related  assets,  which  are  generally  three  years  for  computer  equipment  and  software,  five  years  for 
laboratory equipment and office equipment, and seven years for furniture and fixtures. Amortization of leasehold improvements and 
finance lease right-of-use assets are computed using the straight-line method over the shorter of the remaining lease term or the estimated 
useful life of the related assets, typically ranging from three to twelve years. Upon sale or retirement of assets, the costs and related 
accumulated depreciation and amortization are removed from the balance sheet and the resulting gain or loss is reflected in operations. 

Impairment of Long-lived Assets

We review long-lived assets, including property, equipment and right-of-use assets, for impairment whenever events or changes 
in business circumstances indicate that the carrying amount of the assets may not be fully recoverable. Impairment is measured as the 
amount  by  which  the  carrying  amount  of  a  long-lived  asset  exceeds  its  fair  value.  We  would  recognize  an  impairment  loss  when 
estimated undiscounted future cash flows expected to result from the use of the asset and its eventual disposition are less than its carrying 
amount. 

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Leases

CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

We determine if the arrangement contains a lease at inception based on whether the contract conveys the right to control the use 
of an identified asset. The lease classification is determined at lease commencement, which is the date the underlying asset is available 
for use by the Company, and preliminary based on whether the arrangement is effectively a financed purchase of the underlying asset 
(finance lease) or not (operating lease). We determined the lease term at the commencement date by considering whether renewal options 
and termination options are reasonably assured of exercise. In addition to the fixed minimum lease payments required under the lease 
arrangements, certain leases include payments of operating expenses that may be revised based on the landlord’s estimate. These variable 
payments are excluded from the lease payments used to determine the right-of-use asset and lease liability and are recognized when the 
associated activity occurs.

We recognize right-of-use assets and short-term and long-term lease liabilities on our consolidated balance sheets for operating 
leases. The right-of-use asset and short-term and long-term lease liabilities for finance leases are recognized in property and equipment, 
other current liabilities, and other non-current liabilities, respectively, on the consolidated balance sheets.

In determining the present value of lease payments, we estimated our incremental borrowing rate based on information available 
upon commencement. We base the lease liabilities on the present value of remaining lease payments over the remaining terms of the 
leases  using  an  estimated  rate  of  interest  that  we  would  pay  to  borrow  equivalent  funds  on  a  collateralized  basis  at  the  lease 
commencement date. The initial right-of-use asset, for both operating and finance leases, is measured based on the lease liability adjusted 
for any initial direct costs, lease prepayments, and lease incentives.

We  recognize  rent  expense  for  operating  leases  on  a  straight-line  basis  over  the  lease  term  in  operating  expenses  on  the 
consolidated statements of operations. Finance lease right-of-use assets are amortized on a straight-line basis over the shorter of the 
expected useful life or the lease term, and the carrying amount of the lease liability is adjusted to reflect interest, which is recorded in 
interest expense.

We exclude from our consolidated balance sheets recognition of leases having a term of 12 months or less (short-term leases). 

We account for lease and non-lease components as a single component for our operating leases.

Revenue Recognition

We recognize revenue when we transfer promised goods or services to customers in an amount that reflects the consideration for 

those goods or services. 

At contract inception, we assess the goods or services promised within each contract and assess whether each promised good or 
service is distinct and determine those that are performance obligations. For example, a license to our intellectual property is determined 
to be distinct from other performance obligations if licensee is able to use and benefit from the license on its own. Otherwise, licenses 
are bundled with other promises, such as ongoing research and development services, as combined performance obligation.

We enter into collaborative arrangements with partners that typically include payment to us for one of more of the following: (i) 
up-front  license  fees;  (ii)  milestone  payments  related  to  the  achievement  of  developmental,  regulatory,  or  commercial  goals;  (iii) 
royalties on net sales of licensed products; and (iv) research and development cost reimbursements. Up-front license fees are included 
in the transaction price. Development and regulatory milestone payments are included in the transaction price using the most likely 
amount method, if we conclude it is probable that a significant revenue reversal would not occur. For contracts that include sales-based 
royalties or sales-based milestones, we recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance 
obligation to which some or all of the royalty or sales-based milestone has been allocated has been satisfied. 

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Our joint programs with Astellas under the Astellas OSSA Agreement, and with Amgen under the Amgen Agreement (both of 
the Astellas OSSA Agreement and the Amgen Agreement having now been terminated), included promises of research and development 
services. We also entered into the Astellas FSRA Agreement on April 23, 2020. Under the Astellas FSRA Agreement, Astellas agreed 
to pay one-third of the out-of-pocket clinical development costs which may be incurred in connection with the Company’s Phase 3 
clinical trial of reldesemtiv in ALS, up to a maximum contribution by Astellas of $12.0 million. We determined that these services 
collectively were distinct from any licenses provided to Astellas and Amgen under such agreements, and as such, these services were 
accounted for as a separate performance obligation recorded over time. We recognized revenue for these services as the performance 
obligations were satisfied, which we estimated using internal research and development costs incurred.

When a collaborative agreement has more than one performance obligation, we must develop estimates and assumptions that 
require  judgment  to  determine  the  underlying  stand-alone  selling  price  for  each  performance  obligation  which  determines  how  the 
transaction price is allocated among the performance obligations. The stand-alone selling price may include such items as, forecasted 
revenues, development timelines, reimbursement rates for personnel costs, discount rates and probabilities of technical and regulatory 
success, to determine the transaction price to allocate to each performance obligation.

For performance obligations that consist of the delivery of an intellectual property license, the revenue is recognized at the point 
in time that the license is delivered. For combined performance obligations consisting of an intellectual property license and research 
and development services, we recognize the combined performance obligation over time, using an input method, as the research and 
development services are performed.

We are required to make estimates related to the determination of the transaction price and our measurement of how revenue is 
recognized over time, using the input method. Any changes in these estimates are recorded on a cumulative catch-up basis, which would 
affect license, collaboration and other revenues and earnings in the period of adjustment. 

Accrued Research and Development Expenditures 

Clinical  trial  costs  are  a  component  of  research  and  development  expense.  We  accrue  and  expense  clinical  trial  activities 
performed by third parties based upon actual work completed in accordance with agreements established with clinical research and 
manufacturing organizations and clinical sites. We determine the actual costs through monitoring patient enrollment, discussions with 
internal personnel and external service providers regarding the progress or stage of completion of trials or services and the agreed-upon 
fee to be paid for such services.

Revenue Participation Right Purchase Agreements 

We  have  entered  into  certain  revenue  participation  right  purchase  agreements  with  certain  investors,  pursuant  to  which  such 
investors  purchased  rights  to  royalties  from  certain  revenue  streams  in  exchange  for  consideration.  We  typically  account  for  such 
agreements as liabilities to be amortized under the effective interest rate method over the life of the related royalty stream, when we 
have continuing involvement with the underlying R&D. We typically account for such agreements as deferred income to be amortized 
under the units-of-revenue method, when there is no continuing involvement with the underlying R&D. We are required to update our 
estimates, at each reporting period, related to the amount and timing of future royalty payments to be paid to the counterparties of the 
revenue participation right purchase agreements. The estimates of the future royalty payment determine the measurement of the non-
cash interest expense and the carrying value of the liability. 

Revenue participation right purchase agreements are measured using significant unobservable inputs. The estimates of future 
royalties requires the use of several assumptions such as: the probability of clinical success, the probability of regulatory approval, the 
estimated date of a product launch, estimates of eligible patient populations, estimates of prescribing behavior and patient compliance 
behavior, estimates of pricing, payor reimbursement and coverage, and sales ramp. As products containing aficamten and omecamtiv 
mecarbil have not yet been commercialized, the estimates are highly subjective. 

85

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In 2020, we entered into a royalty purchase agreement, pursuant to which we sold our right to receive certain payments on the 
net sales of products containing the compound mavacamten. The consideration received was deferred income to be amortized under the 
units-of-revenue  method,  as  there  was  no  continuing  involvement  with  the  underlying  R&D.  In  2022,  we  entered  into  a  tripartite 
agreement  with  RTW  ICAV  and  MyoKardia,  Inc.  acknowledging  the  release  and  discharge  of  any  further  obligations  by  us  or 
MyoKardia, Inc. in connection to the Mavacamten Royalty and consequently we recognized the deferred revenue as Realization of 
revenue participation right purchase agreement on the income statement. 

As  of  December 31,  2023,  we  have  a  total  carrying  value  of  approximately  $380.0  million  of  liabilities  related  to  revenue 

participation right purchase agreements.

Research and Development Expenditures

Research and development costs are charged to operations as incurred. Research and development expenses consist primarily of 
clinical manufacturing costs, preclinical study expenses, consulting and other third-party costs, employee compensation, supplies and 
materials, allocation of overhead and occupancy costs, facilities costs and depreciation of equipment.

Income Taxes

We  account  for  income  taxes  under  the  asset  and  liability  method.  Under  this  method,  deferred  tax  assets  and  liabilities  are 
determined based on the difference between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect 
for the year in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to 
reduce deferred tax assets to the amounts expected to be realized.

We recognize uncertain tax positions taken or expected to be taken on a tax return. Tax positions are initially recognized when it 
is more likely than not that the position will be sustained upon examination by the tax authorities. Such tax positions are initially and 
subsequently measured as the largest amount of tax benefit that is more likely than not of being realized upon ultimate settlement with 
the tax authority assuming full knowledge of the position and relevant facts.

We recognize interest accrued related to unrecognized tax benefits and penalties as income tax expense.

Stock-Based Compensation

We maintain equity incentive plans under which incentive stock options may be granted to employees and nonqualified stock 
options, restricted stock awards, performance-based stock units and stock appreciation rights may be granted to employees, directors, 
consultants and advisors. In addition, we maintain an ESPP under which employees may purchase shares of our common stock through 
payroll deductions.

Stock-based compensation expense related to stock options granted to employees and directors is recognized based on the grant 
date estimated fair values using the Black Scholes option pricing model. The value of the portion of the award that is ultimately expected 
to vest is recognized as expense ratably over the requisite service period. 

Stock-based compensation expense related to performance-based stock units granted to employees is recognized based on the 
grant-date  fair  value  of  each  award  and  recorded  as  expense  over  the  vesting  period  using  the  ratable  method  when  the  underlying 
performance conditions are deemed probable.

Stock-based compensation expense related to the ESPP is recognized based on the fair value of each award estimated on the first 
day of the offering period using the Black Scholes option pricing model and recorded as expense over the service period using the 
straight-line method.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Note 2 — Net Loss Per Share

Basic net loss per share is computed by dividing net loss by the weighted average number of vested common shares outstanding 
during the period. Diluted net loss per share is computed by giving effect to all potentially dilutive common shares, including outstanding 
stock options, unvested restricted stock, warrants, convertible preferred stock and shares issuable under our ESPP, during the period 
using the treasury stock method and convertible notes using the if-converted method.

The following instruments were excluded from the computation of diluted net loss per share for the periods presented because 

their effect would have been antidilutive (in thousands):

Options to purchase common stock
Warrants to purchase common stock
Restricted stock and performance units
Shares issuable related to the ESPP
Shares issuable upon conversion of 2026 Notes
Shares issuable upon conversion of 2027 Notes

Total shares

Note 3 — Research and Development Arrangements

2021 Ji Xing and RTW Transactions

2023

Years Ended December 31,
2022

2021

11,780
13
1,375
16
2,003
10,572
25,759

10,992
13
1,260
13
2,003
10,572
24,853

9,373
48
1,415
8
16,675
—
27,519

In December 2021, we entered into the 2021 RTW Transactions as described below, related to omecamtiv mecarbil.

Ji Xing Omecamtiv Mecarbil License and Collaboration Agreement

On December 20, 2021, we entered into the Ji Xing OM License Agreement, pursuant to which we granted to Ji Xing an exclusive 
license to develop and commercialize omecamtiv mecarbil in China and Taiwan. Under the terms of the Ji Xing OM License Agreement, 
we are the beneficiary of a nonrefundable $50.0 million payment obligation from Ji Xing comprised of a $40.0 million payment as 
consideration for the rights granted by us to Ji Xing and $10.0 million attributable to our having submitted to the FDA an NDA for 
omecamtiv mecarbil. The $50.0 million payment was received by the Company in January 2022. We may be eligible to receive from Ji 
Xing additional payments totaling up to $330.0 million for the achievement of certain commercial milestone events in connection to 
omecamtiv mecarbil. In addition, Ji Xing will pay us tiered royalties in the mid-teens to the low twenties range on the net sales of 
pharmaceutical products containing omecamtiv mecarbil in China and Taiwan, subject to certain reductions for generic competition, 
patent expiration and payments for licenses to third party patents. 

Ji Xing will be responsible for the development and commercialization of omecamtiv mecarbil at its own cost and is required to 
use diligent efforts to develop and commercialize omecamtiv mecarbil in China and Taiwan. The development of omecamtiv mecarbil 
will  be  initially  focused  on  HFrEF,  and  Ji  Xing  will  have  the  opportunity  to  participate  in  Cytokinetics’  global  clinical  trials  of 
omecamtiv mecarbil. Cytokinetics will supply omecamtiv mecarbil to Ji Xing either as a finished product or as an active pharmaceutical 
ingredient. Ji Xing may reimburse Cytokinetics for certain costs related to development and supply activities that we perform on their 
behalf.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The Ji Xing OM License Agreement, unless terminated earlier, will continue on a market-by-market basis until expiration of the 
relevant royalty term. Ji Xing has the right to terminate the Ji Xing OM License Agreement for convenience. Each party may terminate 
the Ji Xing OM License Agreement for the other party’s uncured material breach, insolvency, or failure to perform due to extended 
force majeure events. Cytokinetics may also terminate the Ji Xing OM License Agreement if Ji Xing challenges Cytokinetics’ patents 
or  undergoes  certain  change  of  control  transactions.  Rights  granted  to  Ji  Xing  in  relation  to  omecamtiv  mecarbil  will  revert  to 
Cytokinetics upon termination, and, under certain circumstances, subject to a low single digit royalty payment by the Company to Ji 
Xing on the net sales of the products containing the compound omecamtiv mecarbil in China and Taiwan. We assessed this arrangement 
in accordance with ASC 606 and concluded that there is one performance obligation relating to the license of functional intellectual 
property. The performance obligation was satisfied, and we recognized the residual allocation of arrangement consideration as revenue 
of $54.9 million in 2021. Due to the nature of development, including the inherent risk of development and approval by regulatory 
authorities,  we  are  unable  to  estimate  if  and  when  the  development  milestone  payments  could  be  achieved  or  become  due  and, 
accordingly, we consider the milestone payments to be fully constrained and excluded any potential milestone payments from the initial 
transaction price. 

The consideration related to sales-based milestone payments, including royalties, will be recognized when the related sales occur 

under the sales- and usage-based royalty exception as these amounts have been determined to relate predominantly to the license. 

We re-evaluate the probability of achievement of development milestones and any related constraints each reporting period. We 
will include consideration, without constraint, in the transaction price to the extent it is probable that a significant reversal in the amount 
of cumulative revenue recognized will not occur.

Common Stock Purchase Agreements
On December 20, 2021, as part of the 2021 RTW Transactions, we entered into common stock purchase agreements with each 
of the RTW Investors. These common stock purchase agreements provided for the sale and issuance of an aggregate of 511,182 shares 
of our common stock at a price per share of $39.125 and an aggregate purchase price of $20.0 million. The closing occurred on December 
20, 2021. The RTW Investors have agreed to certain trading and other restrictions with respect to the shares of common stock they 
purchased pursuant to these agreements, including a restriction on sales or other transfers of the shares, subject to certain exceptions, 
for a period of one year from the closing date. The restrictions resulted in a premium paid by the RTW Investors of $4.9 million, which 
represents  the  excess  amount  paid  over  the  fair  value  of  the  shares  of  common  stock  purchased.  The  premium  was  determined  by 
analyzing the restrictions discount applied to the closing stock price as of December 20, 2021, which is a Level 2 fair value input. The 
cash received less the calculated premium is the $15.1 million fair value of the common stock recorded.

2020 Ji Xing and RTW Transactions

On July 14, 2020, we entered in the 2020 RTW Transactions, as described below, with RTW Royalty Holdings and Ji Xing, 
related to aficamten, our proprietary small molecule cardiac myosin inhibitor product, a novel cardiac myosin inhibitor, and other assets. 

Ji Xing Aficamten License and Collaboration Agreement

On July 14, 2020, we entered into the Ji Xing Aficamten License Agreement with Ji Xing, pursuant to which we granted to Ji 
Xing an exclusive license to develop and commercialize aficamten in China and Taiwan. Under the terms of the Ji Xing Aficamten 
License Agreement, we received from Ji Xing a nonrefundable upfront payment of $25.0 million. We may be eligible to receive from 
Ji Xing milestone payments totaling up to $200.0 million for the achievement of certain development and commercial milestone events 
in connection to aficamten in the field of oHCM and/or nHCM and other indications. In addition, Ji Xing will pay us tiered royalties in 
the low-to-high teens range on the net sales of the products containing aficamten in China and Taiwan, subject to certain reductions for 
generic competition, patent expiration and payments for licenses to third party patents.

Ji Xing will be responsible for the development and commercialization of aficamten at its own cost and is required to use diligent 
efforts to develop and commercialize aficamten in China and Taiwan. The development of aficamten will be initially focused on HCM, 
and  Ji  Xing  will  have  the  opportunity  to  participate  in  Cytokinetics’  global  pivotal  clinical  trials  of  aficamten.  Cytokinetics  or  a 
designated supplier will supply aficamten to Ji Xing either as a finished product or as an active pharmaceutical ingredient.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The Ji Xing Aficamten License Agreement, unless terminated earlier, will continue on a market-by-market basis until expiration 
of the relevant royalty term. Ji Xing has the right to terminate the Ji Xing Aficamten License Agreement for convenience. Each party 
may terminate the Ji Xing Aficamten License Agreement for the other party’s uncured material breach, insolvency, or failure to perform 
due to extended force majeure events. Cytokinetics may also terminate the Ji Xing Aficamten License Agreement if Ji Xing challenges 
Cytokinetics’ patents or undergoes certain change of control transactions. Rights granted to Ji Xing in relation to aficamten will revert 
to Cytokinetics upon termination, and, under certain circumstances, subject to a low single digit royalty payment by the Company to Ji 
Xing on the net sales of the products containing the compound aficamten in China and Taiwan.

We assessed this arrangement in accordance with ASC 606 and concluded that there is one performance obligation relating to the 
license  of  functional  intellectual  property.  The  performance  obligation  was  satisfied,  and  we  recognized  the  residual  allocation  of 
arrangement  consideration  as  revenue  of  $36.5  million  for  2020.  Due  to  the  nature  of  development,  including  the  inherent  risk  of 
development and approval by regulatory authorities, we are unable to estimate if and when the development milestone payments could 
be achieved or become due and, accordingly, we consider the milestone payments to be fully constrained and exclude the milestone 
payments from the initial transaction price.

The consideration related to sales-based milestone payments, including royalties, will be recognized when the related sales occur 
under the sales and usage-based royalty exception of ASC 606 as these amounts have been determined to relate predominantly to the 
license.

We re-evaluate the probability of achievement of development milestones and any related constraints each reporting period. We 
will include consideration, without constraint, in the transaction price to the extent it is probable that a significant reversal in the amount 
of cumulative revenue recognized will not occur.

We recognized a $2.5 million milestone from Ji Xing in 2023 for the initiation of a phase 3 clinical trial for aficamten in nHCM 

which was collected in the fourth quarter of 2023.

We recognized a $5.0 million milestone from Ji Xing during the third quarter of 2021 for initiation of a phase 3 clinical trial for 
aficamten in oHCM. Although our contractual right to payment had not arisen under the Ji Xing Aficamten License Agreement, we 
determined recognition of the milestone in 2021 was appropriate based on our expected initiation of a phase 3 clinical trial of aficamten 
in oHCM and was recorded as a corresponding contract asset in other current assets in our consolidated balance sheet as of December 
31, 2021.

Research and development revenue from Ji Xing for 2023 and 2022 was $1.3 million and $0.9 million, respectively, related to 

certain development cost reimbursements. We had no research and development revenue from Ji Xing in 2021.

We had accounts receivable from Ji Xing of $0.3 million as of December 31, 2023 and $0.1 million as of December 31, 2022.

Royalty Purchase Agreement

On July 14, 2020, we entered the RTW Royalty Purchase Agreement with RTW Royalty Holdings, pursuant to which we sold 
our Mavacamten Royalty, under the Research Collaboration Agreement, dated August 24, 2012, between us and MyoKardia, Inc. to 
RTW  Royalty  Holdings  for  a  one-time  payment  of  $85.0  million.  The  RTW  Royalty  Purchase  Agreement  transaction  closed  on 
November 13, 2020. On March 31, 2021, RTW Royalty Holdings assigned its rights and obligations under the RTW Royalty Purchase 
Agreement to its affiliate, RTW ICAV. We understand that on April 18, 2022, RTW ICAV and MyoKardia, Inc. entered into agreements, 
which purported to assign all of RTW ICAV's rights, title and interest to the Mavacamten Royalty to MyoKardia, Inc., and on April 25, 
2022, we entered into a tripartite agreement with RTW ICAV and MyoKardia, Inc. acknowledging the release and discharge of any 
further obligations by us or MyoKardia, Inc. in connection to the Mavacamten Royalty.

The allocation of the consideration for the 2020 RTW Transactions resulted in $87.0 million being allocated to the RTW Royalty 
Purchase Agreement representing its fair value. The $87.0 million was initially recorded as deferred revenue. On April 25, 2022, as 
discussed above, we entered into a tripartite agreement with RTW ICAV and MyoKardia, Inc. acknowledging the release and discharge 
of any further obligations by us or MyoKardia, Inc. in connection to the Mavacamten Royalty. As a result of the full extinguishment of 
the Mavacamten Royalty, we recognized revenue of $87.0 million in 2022. 

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Astellas

CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Our strategic alliance with Astellas to advance novel therapies for diseases and medical conditions associated with skeletal muscle 

impairment and weakness commenced in 2013 under the Astellas Agreement. 

On April 23, 2020, we and Astellas entered into the two agreements referenced below which, taken together, amend and restate 

the Company’s research, development and commercialization collaboration with Astellas under the Astellas Agreement.

Fast Skeletal Regulatory Activator Agreement

The  Company  and  Astellas  entered  into  the  Astellas  FSRA  Agreement  on  April  23,  2020.  As  a  result  of  the  Astellas  FSRA 
Agreement,  the  Company  will  now  have  exclusive  control  and  responsibility  for  the  Company's  future  development  and 
commercialization of reldesemtiv, CK-601 and other FSRA compounds and products, and accordingly, Astellas has agreed to terminate 
its license to all FSRA compounds and related products.

Under the Astellas FSRA Agreement, Astellas agreed to pay one-third of the out-of-pocket clinical development costs which may 
be incurred in connection with the Company’s Phase 3 clinical trial of reldesemtiv in ALS, up to a maximum contribution by Astellas 
of $12 million. Astellas also agreed to non-cash contributions to the Company, which included the transfer of its existing inventories of 
active pharmaceutical ingredient of reldesemtiv and CK-601. As of December 31, 2023, we have billed and collected from Astellas up 
to the maximum contribution of $12.0 million. On March 31, 2023, we announced that we discontinued COURAGE-ALS, our Phase 3 
clinical trial of reldesemtiv in patients with ALS, and COURAGE-ALS OLE. 

Research and development revenue from Astellas for 2023, 2022, and 2021 was $2.7 million, $5.7 million, and $3.2 million, 

respectively.

We had no accounts receivable from Astellas as of December 31, 2023 and 2022.

Amgen

On  November  23,  2020,  we  received  written  notice  of  termination  from  Amgen  of  the  Amgen  Agreement  pertaining  to  the 
discovery, development and commercialization of novel small molecule therapeutics, including omecamtiv mecarbil, a novel cardiac 
myosin activator, and CK-136 (formerly AMG 594), a novel cardiac troponin activator. The termination of the Amgen Agreement was 
effective May 20, 2021.

We recognized research and development revenue for reimbursements from Amgen of both internal costs of certain full-time 
employee  equivalents  and  other  costs  related  to  the  Amgen  Agreement,  which  terminated  effective  May  20,  2021.  Research  and 
development  revenue  from  Amgen  was  $7.4  million  in  2021  and  consisted  of  reimbursement  of  costs  we  incurred  related  to 
METEORIC-HF. There was no research and development revenue from Amgen in 2023 and 2022. 

Note 4 — Fair Value Measurements

We value our financial assets and liabilities at fair value, defined as the price that would be received for assets when sold or paid 
to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). We utilize market data 
or assumptions that we believe market participants would use in pricing the asset or liability, including assumptions about risk and the 
risks  inherent  in  the  inputs  to  the  valuation  technique.  These  inputs  can  be  readily  observable,  market  corroborated  or  generally 
unobservable.

We  primarily  apply  the  market  approach  for  recurring  fair  value  measurements  and  endeavor  to  utilize  the  best  information 
reasonably available. Accordingly, we use valuation techniques that maximize the use of observable inputs and minimize the use of 
unobservable inputs to the extent possible and consider the security issuers’ and the third-party issuers’ credit risk in our assessment of 
fair value.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

We classify fair value based on the observability of those inputs using a hierarchy that prioritizes the inputs used to measure fair 
value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 
measurement) and the lowest priority to unobservable inputs (Level 3 measurement):

Level 1 — Observable inputs, such as quoted prices in active markets for identical assets or liabilities;

Level 2 — Inputs, other than the quoted prices in active markets, that are observable either directly or through corroboration with 

observable market data; and

Level 3 — Unobservable inputs, for which there is little or no market data for the assets or liabilities, such as internally-developed 

valuation models.

Fair Value of Financial Assets 

The follow tables set forth the fair value of our financial assets, which consists of cash equivalents and investments classified as 

available-for-sale securities, that were measured on a recurring basis (in thousands):

Money market funds
U.S. Treasury securities
U.S. Government agency securities
Commercial paper
Corporate obligations

Money market funds
U.S. Treasury securities
U.S. Treasury securities backed 
repurchase agreements
U.S. Government agency securities
Foreign government agency securities
Commercial paper
Corporate obligations

Fair Value 
Hierarchy Level
Level 1
Level 1
Level 2
Level 2
Level 2

Fair Value 
Hierarchy Level
Level 1
Level 1

Level 2

Level 2
Level 2
Level 2
Level 2

$

$

$

$

December 31, 2023

Amortized
Cost

Unrealized
Gains

Unrealized
Losses

77,429
34,625
175,301
252,956
92,384
632,695

$

$

— $
13
87
156
103
359

$

Fair
Value
77,429
— $
34,623
(15)
175,255
(133)
253,053
(59)
(142)
92,345
(349) $ 632,705

December 31, 2022

Amortized
Cost

Unrealized
Gains

Unrealized
Losses

45,887
172,568

16,003

129,174
7,599
329,359
128,594
829,184

$

$

Fair
Value
45,887
171,466

— $
—

— $

(1,102)

—

12
—
28
—
40

$

—

16,003
128,366
(820)
7,530
(69)
328,956
(431)
(1,209)
127,385
(3,631) $ 825,593

No  credit  losses  on  debt  securities  were  recognized  in  2023  or  2022.  In  its  evaluation  to  determine  expected  credit  losses, 
management considered all available historical and current information, expectations of future economic conditions, the type of security, 
the credit rating of the security, and the size of the loss position, as well as other relevant information. The Company does not intend to 
sell, and is unlikely to be required to sell, any of these available-for-sale investments before their effective maturity or market price 
recovery.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Note 5 — Balance Sheet Components

Our property and equipment consisted of (in thousands):

Property and equipment, net:
Laboratory equipment
Computer equipment and software
Office equipment, furniture and fixtures
Leasehold improvements
Construction in progress
Right-of-use assets, finance lease
Total property and equipment
Less: Accumulated depreciation

December 31,

2023

2022

$

$

18,839
3,263
6,061
66,874
220
1,839
97,096
(28,348)
68,748

$

$

18,490
3,900
6,056
65,912
741
2,448
97,547
(17,094)
80,453

Depreciation expense was $11.9 million, $5.8 million, and $2.3 million for 2023, 2022, and 2021, respectively. 

Our accrued liabilities were as follows (in thousands):

Accrued liabilities:

Clinical and preclinical costs
Compensation related
Other accrued expenses

Total accrued liabilities

December 31,

2023

2022

$

$

5,880
29,255
7,506
42,641

$

$

16,105
21,767
6,224
44,096

We sponsor a 401(k) defined contribution plan covering all employees and contributed $2.5 million, $1.8 million, and $1.1 million 

to this plan in 2023, 2022, and 2021, respectively.

 Note 6 — Agreements with Royalty Pharma

On  January  7,  2022,  we  announced  that  we  had  entered  into  the  2022  RPI  Transactions  with  affiliates  of  Royalty  Pharma 

International plc. 

The  RP  Loan  Agreement  and  the  RP  Aficamten  RPA  described  below,  are  determined  to  be  debt  instruments  subsequently 
measured at amortized cost and were entered into with parties that were at the time of our entry into the 2022 RPI Transactions affiliated 
and in contemplation of one another. We used the relative fair value method and made separate estimates of the fair value of each 
freestanding financial instrument and then allocated the proceeds in proportion to those fair value amounts. Arrangement consideration 
for the RP Loan Agreement and the RP Aficamten RPA totaled $150 million, consisting of the two $50 million upfront payments for 
the signing of the RP Loan Agreement and the RP Aficamten RPA and milestone of $50 million for initiation of the first pivotal trial in 
oHCM for aficamten that was deemed probable at the signing of the agreements. 

The initial consideration was allocated as follows (in thousands):

Fair Value

Proceeds

Allocation

Units of Accounting:
Revenue Participation Right Purchase 
Agreement
Development Funding Loan 
Agreement
Total consideration

$

$

69,498

46,887
116,385

$

$

92

100,000

50,000
150,000

$

$

89,571

60,429
150,000

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

2022 RP Loan Agreement

Under the RP Loan Agreement, we were initially entitled to receive up to $300.0 million in term loans, $50.0 million of which 
was  disbursed  to  us  on  closing  and  the  remaining  $250.0  million  scheduled  to  have  been  available  to  us  upon  our  satisfaction  of 
customary disbursement conditions and certain development conditions by specific deadlines, as follows: 

•

•

•

•

$50.0 million of tranche 2 term loans during the one year period following the receipt on or prior to March 31, 2023 of 
marketing approval from FDA of omecamtiv mecarbil;

$25.0 million of tranche 3 term loans during the one year period following the commercial availability of a diagnostic test 
measuring levels of omecamtiv mecarbil to support the final FDA label language applicable to such drug, subject to such 
commercial availability and the conditions to the tranche 2 term loans having occurred on or prior to March 31, 2023;

$75.0 million of tranche 4 term loans during the one year period following the receipt on or prior to September 30, 2024 of 
positive results from SEQUOIA-HCM, the Phase 3 trial for aficamten; and

$100.0 million of tranche 5 term loans during the one year period following the acceptance by the FDA on or prior to March 
31,  2025  of  an  NDA  for  aficamten,  subject  to  the  conditions  to  the  tranche  4  term  loans  having  occurred  on  or  prior  to 
September 30, 2024.

As a result of our receipt of a CRL on February 28, 2023, in connection to our NDA for omecamtiv mecarbil, we have not satisfied 

the conditions to the availability of the tranche 2 and tranche 3 loans under the RP Loan Agreement. 

In December 2023, we announced positive topline results from SEQUOIA-HCM, the Phase 3 trial for aficamten. This entitled us 
to  receive  $75.0  million  under  tranche  4  during  the  one  year  period  following  the  receipt  of  the  positive  results  and  requires  us  to 
complete a minimum mandatory draw of at least $50.0 million of the $75.0 million available. 

The remaining $100.0 million under tranche 5 remains available for disbursement to us, subject to satisfaction of the conditions 

described above.

Each term loan under the RP Loan Agreement matures on the 10 year anniversary of the funding date for such term loan and is 
repayable  in  quarterly  installments  of  principal,  interest  and  fees  commencing  on  the  last  business  day  of  the  seventh  full  calendar 
quarter following the calendar quarter of the applicable funding date for such term loan, with the aggregate amount payable in respect 
of each term loan (including interest and other applicable fees) equal to 190% of the principal amount of the term loan for the tranche 
1, tranche 4 and tranche 5 term loans and 200% of the principal amount of the term loan for tranche 2 and tranche 3 term loans (such 
amount  with  respect  to  each  term  loan,  “Final  Payment  Amount”).  We  accounted  for  amounts  initially  drawn  under  the  RP  Loan 
Agreement using the effective interest method which resulted in an effective interest rate of 7.65% over the ten-year term. As of the date 
of the prepayment or maturity of the term loan (or the date such prepayment or repayment is required to be paid), we will be required to 
pay an additional amount equal to $34.6 million accreted over the term of the loan. We have made our first payment in the fourth quarter 
of 2023.

We may prepay the term loans in full (but not in part) at any time at our option by paying an amount equal to the unpaid portion 
of Final Payment Amount for the outstanding term loans under the RP Loan Agreement; provided that if the conditions for either the 
tranche 4 term loans or the tranche 5 term loans have been met, we must have borrowed at least $50 million principal amount of the 
tranche 4 or 5 term loans. In addition, the term loans under the RP Loan Agreement are repayable in full at the option of either us or the 
lender in an amount equal to the unpaid portion of Final Payment Amount for the outstanding term loans upon a change of control of 
Cytokinetics. 

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Future minimum payments under the existing borrowing under RP Loan Agreement are (in thousands):

Years ending December 31:
2024
2025
2026
2027
2028
Thereafter
Future minimum payments
Less: Unamortized interest and loan costs

Term Loan, net

$

$

10,080
11,520
11,520
11,520
11,520
37,440
93,600
(25,136)
68,464

As of December 31, 2023, the estimated fair value of our RP Loan Agreement was $59.9 million. The fair value was estimated 

based on Level 3 inputs.

Concurrent with our entry into the RP Loan Agreement discussed above, we terminated the Term Loan Agreement with Silicon 

Valley Bank and Oxford Finance LLC and repaid all amounts outstanding thereunder as further described in Note 7.

2022 RP Aficamten Royalty Purchase Agreement

In addition, on January 7, 2022, we entered into the RP Aficamten RPA with RPI ICAV, pursuant to which RPI ICAV purchased 
rights to certain revenue streams from net sales of pharmaceutical products containing aficamten by us, our affiliates and our licensees 
in exchange for up to $150.0 million in consideration, $50.0 million of which was paid on the closing date, $50.0 million of which was 
paid to us in March 2022 following the initiation of the first pivotal trial in oHCM for aficamten, and $50.0 million of which was paid 
to us in September 2023 following the initiation of the first pivotal clinical trial in nHCM for aficamten. The RP Aficamten RPA also 
provides that the parties will negotiate terms for additional funding if we achieve proof of concept results in certain other indications for 
aficamten, with a reduction in the applicable royalty if we and RPI ICAV fail to agree on such terms in certain circumstances.

Pursuant to the RP Aficamten RPA, RPI ICAV purchased the right to receive a percentage of net sales equal to 4.5% for annual 
worldwide  net  sales  of  pharmaceutical  products  containing  aficamten  up  to  $1  billion  and  3.5%  for  annual  worldwide  net  sales  of 
pharmaceutical products containing aficamten in excess of $1 billion, subject to reduction in certain circumstances. Our liability to RPI 
ICAV is referred to as the “RP Aficamten Liability”.

We  account  for  the  RP  Aficamten  Liability  as  a  liability  primarily  because  we  have  significant  continuing  involvement  in 
generating the related revenue stream from which the liability will be repaid. If and when aficamten is commercialized and royalties 
become due, we will recognize the portion of royalties paid to RPI ICAV as a decrease to the RP Aficamten Liability and a corresponding 
reduction in cash.

The carrying amount of the RP Aficamten Liability is based on our estimate of the future royalties to be paid to RPI ICAV over 
the life of the arrangement as discounted using an imputed rate of interest. The imputed rate of interest on the carrying value of the RP 
Aficamten Liability was approximately 24.8% as of December 31, 2023 and 22.4% as of December 31, 2022. 

In 2023, we updated our analyses of the RP Aficamten RPA to reflect our assumptions resulting from ongoing global market 
research and to reflect other adjustments in connection with our anticipated commercialization, including the additional consideration 
of $50.0 million which was paid to us in September 2023 following the initiation of the first pivotal clinical trial in nHCM for aficamten. 
Our estimates regarding the amount of future royalty payments under the RP Aficamten RPA changed from the fourth quarter of 2022 
due to changes in management’s estimates of unobservable inputs related to market conditions and timing to include projections of 
future royalty payments. The resulting probability-adjusted sales forecast for aficamten has increased year over year mainly due to the 
receipt of positive topline results from SEQUOIA-HCM, the Phase 3 trial for aficamten, in December 2023. 

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The change in estimates are accounted for on a prospective basis in our liability calculation and resulted in changes in our imputed 
interest rate and non-cash interest expense from 22.4% and $5.2 million in the fourth quarter of 2022, 22.4% and $5.4 million in the 
first quarter of 2023, 19.0% and $4.9 million in the second quarter of 2023, 18.0% and $5.4 million in the third quarter of 2023, to 24.8% 
and $9.8 million in the fourth quarter of 2023. The non-cash interest expense was $25.5 million and $15.5 million in 2023 and 2022, 
respectively.  In  2023,  the  change  in  estimate  increased  our  non-cash  interest  expense  and  net  loss  by  $2.0  million.  The  change  in 
accounting estimate increased the net loss per share by $0.02 in 2023.

2017 RP Omecamtiv Mecarbil Royalty Purchase Agreement

In February 2017, we entered into the RP OM RPA pursuant to which we sold a portion of our right to receive royalties from 
Amgen on future net sales of omecamtiv mecarbil to RPFT for a one-time payment of $90 million, which is non-refundable even if 
omecamtiv mecarbil is never commercialized. Concurrently, we entered into a common stock purchase agreement with RPFT through 
which RPFT purchased 875,656 shares of the Company’s common stock for $10.0 million. We allocated the consideration and issuance 
costs  on  a  relative  fair  value  basis  to  our  liability  to  RPFT  related  to  sale  of  future  royalties  under  the  RP  OM  RPA  (the  “RP OM 
Liability”) and the common stock sold to RPFT, which resulted in the RP OM Liability being initially recognized at $92.3 million. The 
RP OM RPA provides for the sale of a royalty to RPFT of 4.5% on worldwide net sales of omecamtiv mecarbil, subject to a potential 
increase of up to an additional 1% under certain circumstances. As a result of our receipt of a CRL on February 28, 2023 in connection 
to our NDA for omecamtiv mecarbil, pursuant to the terms of the RP OM RPA, the applicable royalty rate will increase to a maximum 
of 5.5% if omecamtiv approval obtains FDA approval at any time after June 30, 2023. 

As a result of the termination of the Amgen Agreement and pursuant to our obligations under the RP OM RPA, we and RPFT 
amended the RP OM RPA on January 7, 2022 to preserve RPFT’s rights under the RP OM RPA by providing for direct payments by us 
to RPFT of up to 5.5% of our and our affiliates and licensees worldwide net sales of omecamtiv mecarbil. The RP OM RPA, as amended, 
had no impact on the original accounting for the $92.3 million associated with the RP OM Liability established in February 2017.

We account for the RP OM Liability as a liability primarily because we have significant continuing involvement in generating 
the related revenue stream from which the liability will be repaid. If and when omecamtiv mecarbil is commercialized and royalties 
become due, we will recognize the portion of royalties paid to RPFT as a decrease to the RP OM Liability and a corresponding reduction 
in cash.

The carrying amount of the RP OM Liability is based on our estimate of the future royalties to be paid to RPFT over the life of 
the arrangement as discounted using an imputed rate of interest. The excess of future estimated royalty payments over the $92.3 million 
of allocated proceeds, less issuance costs, is recognized as non-cash interest expense using the effective interest method. The imputed 
rate  of  interest  on  the  carring  value  of  the  RP  OM  Liability  was  approximately  0.1%  as  of  December 31,  2023  and  8.5%  as  of 
December 31, 2022. 

In 2023, we updated our analyses of the RP OM RPA to reflect our current assumptions resulting from ongoing global market 
research and to reflect other adjustments in connection with our anticipated commercialization, including the result of our receipt of a 
CRL in connection to our NDA for omecamtiv mecarbil. As a consequence of our receipt of the CRL from FDA, the royalty rate under 
the RP OM RPA will increase to no more than 5.5%. The resulting probability-adjusted sales forecast for omecamtiv mecarbil has 
decreased year over year because commercialization and sales of omecamtiv mecarbil will be delayed. 

Changes in estimates are accounted for on a prospective basis in our liability calculation and resulted in changes in our imputed 
interest rate and non-cash interest expense from 8.5% and $4.0 million in the fourth quarter of 2022, 1.9% and $0.9 million in the first 
quarter of 2023, 2.9% and $1.4 million in the second and third quarter of 2023, and to 0.1% and $0.1 million in the fourth quarter of 
2023,  respectively.  The  non-cash  interest  expense  was  $3.9  million,  $16.2  million,  and  $12.9  million  in  2023,  2022,  and  2021, 
respectively. In 2023, the change in estimate decreased our non-cash interest expense and net loss by $12.8 million. The change in 
accounting estimate reduced the net loss per share by $0.13 in 2023.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Accounting for the Royalty Pharma Royalty Purchase Agreements

We periodically assess the amount and timing of expected royalty payments using a combination of internal projections and 
forecasts from external sources. To the extent such payments are greater or less than our initial estimates or the timing of such payments 
is  materially  different  than  its  original  estimates,  we  will  prospectively  adjust  the  amortization  of  the  RP  OM  Liability  and  the  RP 
Aficamten Liability and the effective interest rate. 

There are a number of factors that could materially affect the amount and timing of royalty payments, a number of which are not 
within our control. The RP OM Liability and the RP Aficamten Liability are recognized using significant unobservable inputs. The 
estimates  of  future  royalties  requires  the  use  of  several  assumptions  such  as:  the  probability  of  clinical  success,  the  probability  of 
regulatory approval, the estimated date of a product launch, estimates of eligible patient populations, estimates of prescribing behavior 
and  patient  compliance  behavior,  estimates  of  pricing,  payor  reimbursement  and  coverage,  and  sales  ramp.  A  significant  change  in 
unobservable inputs could result in a material increase or decrease to the effective interest rate of the RP OM Liability and the RP 
Aficamten Liability.

We recorded $50.0 million of additional consideration associated with the 2022 RP Aficamten Royalty Purchase Agreement upon 

receipt of the cash in the third quarter of 2023. 

We  review  our  assumptions  on  a  regular  basis  and  our  estimates  may  change  in  the  future  as  we  refine  and  reassess  our 

assumptions. 

Changes to the RP Aficamten Liability and the RP OM Liability are as follows (in thousands):

 Beginning balance, January 
1
 Initial carrying value
 Additional consideration
 Interest accretion
 Amortization of issuance 
costs
 Ending balance, December 
31

RP Aficamten Liability
2022
2023

2023

RP OM Liability
2022

2021

$

105,117

$

— $

195,384

$

179,072

$

166,068

—
50,000
25,474
—

89,571
—
15,546
—

—
—
3,888
112

—
—
16,196
116

—
—
12,892
112

$

180,591

$

105,117

$

199,384

$

195,384

$

179,072

Note 7 — Debt

Silicon Valley Bank and Oxford Finance Term Loans

Prior to January 7, 2022, we maintained $45.0 million aggregate principal amount of the Term Loan Agreement with Silicon 

Valley Bank and Oxford Finance LLC.

The Term Loan Agreement was terminated, and all amounts thereunder repaid in connection to our entry into that certain RP 

Loan Agreement, between us and RPDF, as further described above.

As a result of the termination of the Term Loan Agreement and the repayment to the Lenders, in 2022, we recorded $2.7 million 
in loss on debt extinguishment in the consolidated statements of operations and comprehensive loss, consisting of the premium on debt 
repayments and the write-off of the remaining term loan fees and debt issuance costs.

Interest expense for the Term Loan Agreement was immaterial for 2022 because it represented approximately one week of interest 

before extinguishment. Interest expense for the Term Loan Agreement was $4.8 million for 2021. 

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Convertible Notes

CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

On November 13, 2019, we issued $138.0 million aggregate principal amount of 2026 Notes. On July 6, 2022, we issued $540.0 
million aggregate principal amount of 2027 Notes and used approximately $140.3 million of the net proceeds from the offering of 2027 
Notes and issued 8,071,343 shares of common stock to repurchase approximately $116.9 million aggregate principal amount of the 2026 
Notes pursuant to privately negotiated exchange agreements entered into with certain holders of the 2026 Notes concurrently with the 
pricing of the offering of the 2027 Notes. As a result of the partial repurchase of the 2026 Notes, the Company recorded an inducement 
loss of $22.2 million, consisting of the difference between the consideration to the holders pursuant to the exchange agreements and the 
if-converted value of the 2026 Notes under the original terms. As of December 31, 2023, there remain $21.1 million aggregate principal 
amount of 2026 Notes outstanding.

The 2026 Notes are unsecured obligations and bear interest at an annual rate of 4.0% per year, payable semi-annually on May 15 
and December 15 of each year, beginning May 15, 2020. The 2026 Notes are governed by an indenture we entered into with U.S. Bank 
National Association, as trustee. The 2026 Notes will mature on November 15, 2026, unless earlier repurchased or redeemed by us or 
converted at the option of the holders. We may redeem the 2026 Notes prior to the maturity date but we are not required to and no 
sinking fund is provided for the 2026 Notes. The 2026 Notes may be converted, under certain circumstances as described below, based 
on an initial conversion rate of 94.7811 shares of common stock per $1,000 principal amount (which represents an initial conversion 
price of $10.55 per share). The conversion rate for the 2026 Notes will be subject to adjustment upon the occurrence of certain specified 
events.  In  addition,  upon  the  occurrence  of  a  make-whole  fundamental  change  (as  defined  in  the  indenture),  we  will,  in  certain 
circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its notes in connection 
with such make-whole fundamental change. The 2026 Notes are convertible at December 31, 2023 at the option of the holder. 

The 2026 Notes will be redeemable, in whole or in part, at our option at any time, and from time to time, on or after November 
20, 2023 and, in the case of any partial redemption, on or before the 60th scheduled trading day before the maturity date, at a cash 
redemption  price  equal  to  the  principal  amount  of  the  2026  Notes  to  be  redeemed,  plus  accrued  and  unpaid  interest,  if  any,  to, but 
excluding, the redemption date but only if the last reported sale price per share of our common stock exceeds 130% of the conversion 
price on (1) each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, 
the trading day immediately before the date we may send the related redemption notice; and (2) the trading day immediately before the 
date we may send such notice. If a “fundamental change” (as defined in the indenture agreement, dated November 13, 2019 between us 
and U.S. Bank National Association, as trustee, as supplemented by the first supplemental indenture dated as of November 13, 2019 
between us and such trustee) occurs, then, subject to certain exceptions, holders may require us to repurchase their 2026 Notes at a cash 
repurchase price equal to the principal amount of the 2026 Notes to be repurchased, plus accrued and unpaid interest, if any, to, but 
excluding, the fundamental change repurchase date. 

The following table presents the total amount of interest cost recognized relating to the 2026 Notes (in thousands):

Contractual interest expense
Accretion of debt discount
Amortization of debt issuance costs
Total interest expense recognized

2023

Years Ended December 31,
2022

2021

844
—
108
952

$

$

3,265
—
355
3,620

$

$

5,520
5,907
59
11,486

$

$

The effective interest rate of the 2026 Notes was 4.6% as of December 31, 2023 and 2022 and 12.5% as of December 31, 2021. 
As  of  December 31,  2023.  the  unamortized  debt  issuance  cost  for  the  2026  Notes  was  $0.3  million  and  will  be  amortized  over 
approximately 2.9 years.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The 2027 Notes ($540.0 million of aggregate principal) are our senior, unsecured obligations and are (i) senior in right of payment 
to our future indebtedness that is expressly subordinated to the 2027 Notes in right of payment; (ii) equal in right of payment with all of 
our indebtedness that is not so subordinated (including the 2026 Notes); (iii) effectively subordinated to our existing and future secured 
indebtedness, to the extent of the value of the collateral securing that indebtedness; and (iv) structurally subordinated to all existing and 
future indebtedness and other liabilities, including trade payables, and (to the extent we are not a holder thereof) preferred equity, if any, 
of our subsidiaries. The net proceeds of the 2027 Notes were approximately $523.6 million after deducting issuance costs related to the 
2027 Notes. The 2027 Notes bear interest at a rate of 3.5% per year, payable semiannually in arrears on January 1 and July 1 of each 
year, beginning on January 1, 2023. The 2027 Notes will mature on July 1, 2027, unless earlier converted, redeemed or repurchased. 

The 2027 Notes are convertible into cash, shares of our common stock or a combination of cash and shares of our common stock, 
at  our  election,  based  on  the  applicable  conversion  rate(s).  The  initial  conversion  rate  for  the  2027  Notes  is  19.5783  shares  of  our 
common stock per $1,000 principal amount of such Notes, which is equivalent to an initial conversion price of approximately $51.08 
per share. Holders of the 2027 Notes may convert all or any portion of their convertible notes at their option only in the following 
circumstances: (i) during any calendar quarter (and only during such calendar quarter) commencing after the calendar quarter ending on 
September 30, 2022, if the last reported sale price per share of our common stock, $0.001 par value per share, exceeds 130% of the 
conversion price for each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and 
including, the last trading day of the immediately preceding calendar quarter; (ii) during the five consecutive business days immediately 
after any 10 consecutive trading day period (such 10 consecutive trading day period, the “measurement period”) if the trading price per 
$1,000 principal amount of 2027 Notes for each trading day of the measurement period was less than 98% of the product of the last 
reported  sale  price  per  share  of  our  common  stock  on  such  trading  day  and  the  conversion  rate  on  such  trading  day;  (iii)  upon  the 
occurrence of certain corporate events or distributions on our common stock, as described in the 2027 Indenture; (iv) if we call such 
2027 Notes for redemption; and (v) at any time from, and including, March 1, 2027 until the close of business on the scheduled trading 
day immediately before the maturity date. 

We may not redeem the 2027 Notes at our option at any time before July 7, 2025. The 2027 Notes will be redeemable, in whole 
or in part (subject to the “Partial Redemption Limitation” (as defined in the 2027 Indenture)), at our option at any time, and from time 
to time, on or after July 7, 2025 and, in the case of a partial redemption, on or before the 60th scheduled trading day immediately before 
the maturity date, at a cash redemption price equal to the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid 
interest, if any, to, but excluding, the redemption date, but only if the last reported sale price per share of our common stock exceeds 
130% of the conversion price on (i) each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days 
ending on, and including, the trading day immediately before the date we may send the related redemption notice; and (ii) the trading 
day immediately before the date we may send such notice. In addition, calling any of the 2027 Notes for redemption will constitute a 
Make-Whole Fundamental Change with respect to that convertible note, in which case the conversion rate applicable to the conversion 
of that Note will be increased in certain circumstances if it is converted after it is called for redemption. The conversion rate for the 2027 
Notes shall not exceed 25.4517 shares per $1,000 principal amount of such Notes, subject to certain customary anti-dilution adjustments 
(as  defined  in  the  2027  indenture).  Pursuant  to  the  Partial  Redemption  Limitation,  we  may  not  elect  to  redeem  less  than  all  of  the 
outstanding  2027  Notes  unless  at  least  $75.0  million  aggregate  principal  amount  of  2027  Notes  are  outstanding  and  not  subject  to 
redemption as of the time we may send the related redemption notice.

If a “Fundamental Change” (as defined in the 2027 Indenture) occurs, then, subject to a limited exception for certain cash mergers, 
noteholders may require us to repurchase their 2027 Notes at a cash repurchase price equal to the principal amount of the 2027 Notes to 
be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the fundamental change repurchase date. The definition of 
Fundamental Change includes certain business combination transactions involving us and certain de-listing events with respect to our 
common stock.

The following table presents the total amount of interest cost recognized relating to the 2027 Notes (in thousands):

Contractual interest expense
Amortization of debt issuance costs
Total interest expense recognized

$

$

2023

2022

18,900
3,074
21,974

$

$

9,188
1,542
10,730

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The  effective  interest  rate  of  the  2027  Notes  was  4.2%  as  of  December 31,  2023  and  2022.  As  of  December 31,  2023,  the 
unamortized debt issuance cost for the 2027 Notes was $11.8 million and will be amortized over approximately 3.6 years. In 2023, the 
conditions allowing holders of the Notes to convert were not met. As a result, the 2027 Notes are not convertible at December 31, 2023.

Future minimum payments under the 2027 Notes and 2026 Notes are (in thousands): 

Years ending December 31:
2024
2025
2026
2027
Future minimum payments
Less: Interest
Convertible notes, principal amount
Less: Debt issuance costs on the convertible notes
Net carrying amount of the convertible notes

$

$

2027 Notes

2026 Notes

Total

18,900
18,900
18,900
558,900
615,600
(75,600)
540,000
(11,799)
528,201

$

$

845
845
21,978
—
23,668
(2,536)
21,132
(344)
20,788

$

$

19,745
19,745
40,878
558,900
639,268
(78,136)
561,132
(12,143)
548,989

As of December 31, 2023, the estimated fair value of the 2027 Notes and 2026 Notes was $990.4 million and $168.4 million, 
respectively, and was based upon observable, Level 2 inputs, including pricing information from recent trades of the convertible notes.

Capped Call Transactions

In connection with the offering of the 2026 Notes, the Company entered into privately-negotiated capped call transactions with 
one of the underwriters in the offering or its affiliate. On October 24, 2022, we entered into a termination agreement in connection to 
the capped call transactions and thereby released the capped call counterparties of any further obligations in relation to the capped call 
transactions. As a result of the termination agreement and unwinding of the capped call transactions, we received gross proceeds of 
$26.4 million in cash.

Note 8 — Stockholders’ Equity

Equity Incentive Plan

Our 2004 Plan provides for us to grant incentive stock options, non-statutory stock options, restricted stock, stock appreciation 
rights, restricted stock units, performance shares and performance units to employees, directors, and consultants. We may grant options 
for terms of up to ten years at prices not lower than 100% of the fair market value of our common stock on the date of grant. Options 
granted to new employees generally vest 25% after one year and monthly thereafter over a period of four years. Options granted to 
existing employees generally vest monthly over a period of four years.

In May 2022, our stockholders approved an amendment to the 2004 Plan to increase the number of authorized shares reserved 
for issuance under the 2004 Plan by an additional 6.0 million shares. In May 2022 and February 2023, our board of directors approved 
an amendment to the 2004 Plan to increase the number of authorized shares reserved for issuance under the 2004 Plan by an additional 
1.6 million shares and 1.0 million shares, respectively, for inducement grants to new employees. As of December 31, 2023, the total 
authorized shares under the 2004 Plan available for grant was 7.6 million. 

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Our annual grant of stock-based compensation takes place during the first quarter of each year. Stock option activity in 2023, 

2022, and 2021 was as follows:

Stock Options
Outstanding

Weighted
Average Exercise
Price per Share

Weighted
Average 
Remaining
Contractual Life
(in years)

Aggregate
Intrinsic Value
(in millions)

 Balance at December 31, 2020
 Granted
 Exercised
 Forfeited
 Balance at December 31, 2021
 Granted
 Exercised
 Forfeited
 Balance at December 31, 2022
 Granted
 Exercised
 Forfeited
 Balance at December 31, 2023
 Exercisable at December 31, 2023

8,501,949
2,513,350
(1,346,194)
(296,146)
9,372,959
3,424,150
(1,389,031)
(415,675)
10,992,403
2,447,225
(1,200,895)
(458,503)
11,780,230
7,279,310

$

$

$

$
$

10.02
22.43
9.01
14.56
13.35
39.79
10.13
28.94
22.13
38.59
12.13
35.01
26.07
19.29

6.8
5.7

$
$

676.4
467.3

We have elected to account for forfeitures as they occur. The intrinsic value of stock options exercised, calculated based on the 
difference between the market value at the date of exercise and the exercise price, was $33.8 million for 2023, $46.3 million for 2022, 
and $29.3 million for 2021. The intrinsic value of stock options outstanding at December 31, 2023 was $676.4 million.

RSU, including PSU, activity in 2023, 2022, and 2021 was as follows:

 Balance at December 31, 2020
 Granted
 Exercised
 Forfeited
 Balance at December 31, 2021
 Granted
 Exercised
 Forfeited
 Balance at December 31, 2022
 Granted
 Exercised
 Forfeited
 Balance at December 31, 2023

Number of
Restricted
Stock Units

Weighted
Average Award
Date Fair Value
per Share

1,116,642
1,093,450
(606,240)
(189,025)
1,414,827
780,519
(707,772)
(273,310)
1,214,264
965,863
(721,215)
(84,290)
1,374,622

$

$

$

$

11.88
21.69
11.13
21.32
18.52
37.69
16.72
26.65
30.07
39.09
27.40
35.46
37.47

RSUs generally vest annually over two to three years. For 2023, the fair value of RSUs vested, calculated based on the units 

vested multiplied by the closing price of our common stock on the date of vesting, was $28.6 million.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Performance Stock Units

In May 2021, the Compensation Committee granted a total of 375,000 PSUs to certain employees with a weighted average grant 
date fair value of $25.32 per unit. The fair value of the PSUs was determined on the grant date based on the fair value of the Company’s 
common  stock  at  such  time.  The  PSUs  consist  of  two  equal  tranches  with  50%  of  each  tranche  vesting  upon  achieving  certain 
performance criteria and 50% vesting at the one-year anniversary of such achievement provided the recipient has been continuously 
employed by the Company. The first tranche vests upon certification by the Compensation Committee that the NDA for omecamtiv 
mecarbil has been filed and accepted by the FDA by December 31, 2021 or June 30, 2022 and the second tranche vests upon certification 
by the Compensation Committee that the FDA approval of the NDA is with an approved label that is consistent with the expectations 
underlying the Company’s commercial launch plans for omecamtiv mecarbil in effect immediately prior to such approval by June 30, 
2022 or December 31, 2022.

In 2022, the performance target for the first tranche of PSUs was met. As a result, the Company recognized expense of $0.7 
million in 2022 for the first tranche of PSUs. The performance target for the second tranche of PSUs was not met, and therefore, such 
second tranche of PSUs consisting of 182,500 PSUs were deemed forfeited as of December 31, 2022. No expense was recognized for 
the second tranche. 

Employee Stock Purchase Plan

Under our ESPP, employees may purchase common stock up to a specified maximum amount at a price equal to 85% of the fair 
market value at certain plan-defined dates. In May 2020, the Company’s stockholders approved an amendment to the ESPP to increase 
the number of common stock shares reserved for issuance under the ESPP by 0.5 million shares. 

We issued 136,065 shares at an average price of $30.43 per share during 2023, 98,153 shares at an average price of $32.89 per 
share in 2022, and 108,780 shares at an average price of $16.33 per share in 2021 pursuant to the ESPP. At December 31, 2023, we 
have 103,822 shares of common stock reserved for issuance under the ESPP.

Stock-Based Compensation Expense

We use the Black-Scholes option pricing model to determine the fair value of stock option grants to employees and directors and 
employee stock purchase plan shares. The fair value of share-based payments was estimated on the date of grant based on the following 
assumptions:

Year Ended December
31, 2023

Year Ended December
31, 2022

Year Ended December
31, 2021

Risk-free interest rate

Volatility
Expected term in years
Expected dividend yield

Options
3.57% to 
4.6%
67%
6.3
0%

ESPP
5.33% to 
5.44%

Options
1.41% to 
4.01%

ESPP
1.63% to 
4.65%
49% to 50% 66% to 67% 64% to 65% 66% to 67% 66% to 67%
0.5
0%

Options
0.58% to 
1.28%

6.3 to 6.4
0%

6.4 to 6.5
0%

0.5
0%

0.5
0%

0.05%

ESPP

We use U.S. Treasury zero-coupon issues with remaining terms similar to the expected terms of the options for the risk-free 
interest rate. We use our own volatility history based on our stock trading history and our own historical exercise to estimate expected 
term for option grants. We do not anticipate paying dividends in the foreseeable future and use an expected dividend yield of zero. We 
do not estimate forfeitures in our stock-based compensation.

We measure compensation expense for restricted stock units at fair value on the date of grant and recognize the expense over the 
expected vesting period. We recognize stock-based compensation expense on a ratable basis over the requisite service period, generally 
the vesting period of the award for share-based awards. 

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Stock-based compensation expense for 2023, 2022, and 2021 was as follows (in thousands):

Research and development
General and administrative

2023

Years Ended December 31,
2022

2021

$

$

32,134
39,931
72,065

$

$

19,100
28,753
47,853

$

$

10,463
16,369
26,832

As of December 31, 2023, we expect to recognize $102.2 million of unrecognized compensation cost related to unvested stock 
options over a weighted-average period of 2.5 years, $29.2 million of unrecognized compensation cost related to unvested restricted 
stock over a weighted-average period of 1.6 years.

Warrants 

In May 2022, Silicon Valley Bank exercised 16,901 warrants issued pursuant to the Term Loan Agreement with a strike price of 
$7.10 per share and elected the cashless settlement method. In June 2022, Silicon Valley Bank exercised additional 9,226 warrants and 
8,638 warrants with a strike price of $9.76 per share and $10.42 per share, respectively. Accordingly, in 2022, we issued to Silicon 
Valley Bank a total of 28,306 shares of our common stock. 

As of December 31, 2023 and 2022, we had the following warrants outstanding to purchase shares of our common stock:

Issuance Date
January 2020

Expiration Date
January 2030

Exercise Price

$

10.42

Warrants 
Outstanding at
 December 31, 2022
12,957

Warrants 
Outstanding at
 December 31, 2023
12,957

The remaining 12,957 warrants outstanding at December 31, 2023 were exercised in January 2024. 

Controlled Equity Offering Sales Agreement with Cantor Fitzgerald & Co.

On March 1, 2023, we entered into the Amended ATM Facility, with Cantor, under which we may offer and sell, from time to 
time at our sole discretion, shares of the Common Stock having an aggregate offering price of up to $300.0 million through Cantor, as 
sales agent. The Amended ATM Facility amends, restates and supersedes the Controlled Equity Offering Sales Agreement dated as of 
March 6, 2019 between the Company and Cantor.

Cantor may sell the Common Stock by any method that is deemed to be an “at the market offering” as defined in Rule 415 of the 
Securities Act of 1933, as amended, including sales made directly on the Nasdaq Global Select Market or any other trading market for 
our common stock. Cantor will use commercially reasonable efforts to sell the Common Stock from time to time, based upon instructions 
from us (including any price, time or size limits or other customary parameters or conditions we may impose). We will pay Cantor a 
commission of up to 3.0% of the aggregate gross sales proceeds of any common stock sold through Cantor under the Amended ATM 
Facility, and also have provided Cantor with customary indemnification rights.

In 2023, we issued 5,016,170 shares of our common stock for net proceeds of $164.2 million under the Amended ATM Facility.

Note 9 — Commitments and Contingencies

Operating Leases

In July 2019, we entered into the Oyster Point Lease of office and laboratory space at a facility located in South San Francisco, 
California,  and  we  entered  into  amendments  to  the  Oyster  Point  Lease  in  2020,  2021,  2022,  and  2023.  The  Oyster  Point  Lease 
commenced on March 31, 2021 and has an expiration date of October 31, 2033. 

In January 2022, we entered into a series of lease agreements with the sub-landlord and landlord and leased an office space at a 
facility located in Radnor, Pennsylvania (the "Radnor Lease"). The Radnor Lease commenced on September 1, 2022, when the leasehold 
improvements were substantially completed, and we gained control over the use of the underlying assets. The Radnor Lease has an 
expiration date of July 31, 2027 with one five-year option to extend the lease. 

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The weighted-average remaining lease term of the operating leases was 9.7 years, 10.7 years, and 11.7 years as of December 31, 
2023, 2022, and 2021, respectively. The weighted-average discount rate used to determine the related operating lease liabilities was 
8.7% as of December 31, 2023 and 2022, and 10.0% as of December 31, 2021.

Cash paid for operating leases for the years ended December 31, 2023, 2022, and 2021 was $17.8 million, $24.1 million, and 

$6.1 million, respectively, and was included in net cash used in operating activities in our consolidated statements of cash flows. 

Finance Leases

During the third quarter of 2021, we entered into a master lease agreement for laboratory equipment leases that commenced in 
the fourth quarter of 2021. The leases have an initial term of 3 years, commenced through the second quarter of 2022 and expire in 2025. 
The master lease agreement provides a purchase option with a bargain purchase price, which we expect to exercise at the end of the 
term. The Company classified the leases as finance leases.

Finance leases are accounted for on the consolidated balance sheets with right-of-use assets and lease liabilities recognized in 
property and equipment, other current liabilities, and other non-current liabilities, respectively. The finance lease cost is recognized as 
a combination of the amortization expense for the right-of-use assets calculated on a straight-line basis over the five-year estimated 
useful life for laboratory equipment and interest expense for the outstanding lease liabilities using the determined discount rates. As of 
December 31, 2023, we have recognized finance lease right-of-use assets of $1.8 million, short-term finance lease liabilities of $1.0 
million, and long-term finance lease liabilities of $0.2 million.

As of December 31, 2023, 2022, and 2021, the weighted average remaining lease term for the finance leases is 3.0 years, 4.0 
years,  and  4.9  years,  respectively.  The  weighted  average  discount  rate  used  to  determine  the  finance  lease  liabilities  is  9.5%  as  of 
December 31, 2023, 2022, and 2021. 

The cash paid for finance lease for the years ended December 31, 2023 and 2022 was $0.9 million and was included in financing 

activities in our consolidated statement of cash flows. No cash was paid for finance lease in 2021.

Future minimum lease payments under non-cancellable leases as of December 31, 2023 is as follows (in thousands):

Years ending December 31:
2024
2025
2026
2027
2028
Thereafter
Total future minimum lease payments
Less: Imputed interest
Total lease liability

Operating Leases
18,738
$
19,563
20,180
20,514
20,738
109,981
209,714
(71,396)
138,318

$

$

$

Finance Leases

990
204
-
—
—
—
1,194
(51)
1,143

Rent expense for operating and finance leases was $22.1 million, $21.6 million, and $23.1 million for 2023, 2022, and 2021, 

respectively.

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Note 10 — Income Taxes 

We  did  not  record  an  income  tax  provision  in  2023,  2022,  and  2021  because  we  had  net  taxable  losses.  Our  significant 

jurisdictions are the United States and California. 

The following reconciles the statutory federal income tax rate to our effective tax rate:

Tax at federal statutory tax rate
State tax, net of federal benefits
Change in state effected rates
Tax credits, net
Change in valuation allowance
Stock-based compensation
Other

Total

2023

Years Ended December 31,
2022

2021

21%
1%
0%
4%
(24)%
1%
(3)%
0%

21%
1%
0%
4%
(26)%
2%
(2)%
0%

21%
0%
(1)%
3%
(24)%
2%
(1)%
0%

Deferred tax assets, net, reflecting the net tax effect of temporary differences between the carrying amounts of assets and liabilities 

for financial reporting purposes and the amounts used for income tax purposes, were as follows (in thousands):

Deferred tax assets:

Net operating loss carryforwards
Tax credits
Liability related to sale of future royalties
Reserves and accruals
Capitalized R&D
Long-term lease liability

Total noncurrent deferred tax assets

Deferred tax liabilities:

Depreciation and amortization
Operating lease right-of-use assets
Unrealized Loss

Total noncurrent deferred tax liabilities

Less: Valuation allowance
Net deferred tax assets

As of December 31,

2023

2022

$

231,915
119,815
85,501
35,466
95,437
28,634
596,768

(6,842)
(17,392)
(6)
(24,240)
(572,528)

— $

202,459
98,292
68,366
23,950
48,047
28,901
470,015

(7,909)
(18,192)
—
(26,101)
(443,914)
—

$

$

Realization of deferred tax assets is dependent upon future earnings, if any, the timing and amount of which are uncertain. Based 
upon  the  weight  of  available  evidence,  which  includes  our  historical  operating  performance,  reported  cumulative  net  losses  since 
inception,  expected  future  losses,  and  difficulty  in  accurately  forecasting  our  future  results  and  an  assessment  of  both  positive  and 
negative evidence when determining whether it is more likely than not that deferred tax assets are recoverable, we maintained a full 
valuation allowance on the net deferred tax assets as of December 31, 2023 and 2022. The valuation allowance increased by $128.6 
million in 2023 and increased by $116.5 million in 2022.

At December 31, 2023 federal NOL carryforwards were $955.7 million, apportioned state NOL carryforwards before federal 
benefits were $423.7 million, and foreign NOL carryforwards were $0.8 million. If not utilized, federal and state net operating loss 
carryforwards incurred prior to 2018 will begin to expire in various amounts beginning 2024 and 2028, respectively, and the foreign net 
operating loss carryforwards will begin to expire in 2030. 

At  December 31,  2023,  tax  credits  of  $126.3  million  and  $22.8  million  for  federal  and  California  income  tax  purposes, 
respectively consisted of Research and Development Credits and Orphan Drug Credits. If not utilized, the federal carryforwards will 
expire in various amounts beginning in 2024. California based credit carryforwards do not expire.

104

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CYTOKINETICS, INCORPORATED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In general, under Section 382, a corporation that undergoes an ‘ownership change’ is subject to limitations on its ability to utilize 
its pre-change net operating losses and tax credits to offset future taxable income. We do not believe it has experienced an ownership 
change since 2006, however, a portion of its NOLs and tax credits prior to 2007 will be subject to limitations under Section 382.

Activity related to our gross unrecognized tax benefits were (in thousands): 

Balance at the beginning of the year

Increase related to prior year tax positions
Decrease related to prior year tax positions
Increase related to current year tax positions

Balance at the end of the year

$

$

18,355
—
(97)
6,974
25,232

$

$

11,295
4,438
(1,804)
4,426
18,355

$

$

10,522
—
(29)
802
11,295

2023

Years Ended December 31,
2022

2021

We are subject to federal and various state & local and foreign income tax examinations for all fiscal years with unutilized NOLs 
and tax credit carryforwards. Included in the balance of unrecognized tax benefits as of December 31, 2023, 2022, and 2021 are $24.5 
million,  $17.7  million,  and  $10.3  million  of  tax  benefits,  respectively,  that,  if  recognized,  would  result  in  adjustments  to  other  tax 
accounts, primarily deferred taxes.

The Inflation Reduction Act of 2022, or IRA, was signed into law on August 16, 2022. The bill was meant to address the high 
inflation rate in the United States through various climate, energy, healthcare, and other incentives. These incentives are meant to be 
paid for by the tax provisions included in the IRA, such as a new 15 percent corporate minimum tax, a 1 percent new excise tax on stock 
buybacks, additional IRS funding to improve taxpayer compliance, and others. The IRA provisions are effective for tax years beginning 
after December 31, 2022. At this time, none of the IRA tax provisions are expected to have a material impact to our consolidated tax 
provision for the year ending December 31, 2023. The Company will continue to closely monitor any effects from future legislation.

In  October  2021,  the  Organization  for  Economic  Co-operation  and  Development  (“OECD”)/G20  finalized  the  significant 
components of a two-pillar global tax reform plan, which has now been agreed to by the majority of OECD members. Pillar Two requires 
multinational enterprises with annual global revenue exceeding €750 million to pay a global minimum tax of 15%. The Company does 
not currently expect to meet the €750 million revenue threshold. The Company will continue to evaluate the potential impact on future 
periods of the Pillar Two framework and the implementation of the Pillar Two rules in the jurisdictions in which it operates.

Note 11 — Subsequent Events

During the period January 1, 2024 through and inclusive of February 27, 2024, we sold 1,237,460 shares of our common stock 

for net proceeds of $93.6 million under the Amended ATM Facility.  

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ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL 
DISCLOSURE 

None.

ITEM 9A. CONTROLS AND PROCEDURES 

Evaluation of Disclosure Controls and Procedures:

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports 
under the Securities Exchange Act of 1934, as amended, or the Exchange Act, is recorded, processed, summarized and reported within 
the time periods specified in the SEC’s rules and forms and that such information is accumulated and communicated to our management, 
including our Chief Executive Officer, and interim principal financial officer and Chief Accounting Officer, as appropriate, to allow for 
timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, we recognize that 
any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired 
control objectives, and in reaching a reasonable level of assurance, we are required to apply our judgment in evaluating the cost-benefit 
relationship of possible controls and procedures.

As required by Rule 13a-15(b) under the Exchange Act, our management, under the supervision and with the participation of our 
principal executive officer and interim principal financial officer, has evaluated the effectiveness of the design and operation of our 
disclosure  controls  and  procedures  (as  such  term  is  defined  in  Rules  13a-15(e)  and  15d-15(e)  under  the  Exchange  Act)  as  of 
December 31, 2023. Based on such evaluation, our principal executive officer and interim principal financial officer has concluded that, 
as of December 31, 2023, our disclosure controls and procedures were effective at the reasonable assurance level.

Management’s Annual Report on Internal Control Over Financial Reporting:

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term 
is  defined  in  Exchange  Act  Rules  13a-15(f)  and  15d-15(f).  Under  the  supervision  and  with  the  participation  of  our  management, 
including our Chief Executive Officer, and interim principal financial officer and Chief Accounting Officer, we conducted an evaluation 
of the effectiveness of our internal control over financial reporting as of December 31, 2023 based on the framework in Internal Control 
— Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 Framework) (the 
COSO  criteria).  Based  on  the  above  evaluation,  our  management  concluded  that  our  internal  control  over  financial  reporting  was 
effective as of December 31, 2023.

Our independent registered public accounting firm, Ernst & Young LLP, has audited the financial statements included in this 
Annual Report and has issued an attestation report on the effectiveness of our internal control over financial reporting. The report of 
Ernst & Young LLP is included below.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation required by 
Rules 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the fiscal quarter ended December 31, 2023 that have materially 
affected, or are reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B. OTHER INFORMATION

During the fourth quarter ended December 31, 2023, none of our directors or officers (as defined in Rule 16a-1(f) under the 
Exchange Act) adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as those terms 
are defined in Item 408 of Regulation S-K.

Interim Principal Financial Officer

As previously disclosed, effective February 23, 2024 (the “Resignation Date”), Ching W. Jaw resigned from the office of Senior 
Vice President & Chief Financial Officer and from his employment with the Company. Effective as of the Resignation Date, Robert I. 
Blum, the Company’s Chief Executive Officer, assumed the duties and responsibilities of the Company’s principal financial officer on 
an interim basis while the Company conducts a search for a Chief Financial Officer. Mr. Blum, age 60, joined the Company in 1998 and 
has served as the Company’s Chief Executive Officer and a member of the Company’s Board of Directors since January 2007. Additional 
biographical information for Mr. Blum may be found in the Company’s definitive proxy statement on Schedule 14A filed with the 
Securities and Exchange Commission on April 7, 2023. 

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders 
Cytokinetics, Incorporated

Opinion on Internal Control Over Financial Reporting

We  have  audited  Cytokinetics,  Incorporated’s  internal  control  over  financial  reporting  as  of  December  31,  2023,  based  on  criteria 
established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway 
Commission (2013 framework) (the COSO criteria). In our opinion, Cytokinetics, Incorporated (the “Company”) maintained, in all 
material respects, effective internal control over financial reporting as of December 31, 2023, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), 
the 2023 consolidated financial statements of the Company and our report dated February 28, 2024 expressed an unqualified opinion 
thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of 
the effectiveness of internal control over financial reporting included in the accompanying Management’s Annual Report on Internal 
Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting 
based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the 
Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange 
Commission and the PCAOB. 

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to 
obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.  

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness 
exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such 
other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion. 

Definition and Limitations of Internal Control Over Financial Reporting 

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of 
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles.  A  company’s  internal  control  over  financial  reporting  includes  those  policies  and  procedures  that  (1)  pertain  to  the 
maintenance  of  records  that,  in  reasonable  detail,  accurately  and  fairly  reflect  the  transactions  and  dispositions  of  the  assets  of  the 
company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in 
accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in 
accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention 
or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the 
financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections 
of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in 
conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

San Jose, California
February 28, 2024

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ITEM 9B. OTHER INFORMATION

None.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

None.

108

 
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PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE 

The  information  regarding  our  directors  and  executive  officers,  our  director  nominating  process  and  our  audit  committee  is 
incorporated by reference from our definitive Proxy Statement for our 2024 Annual Meeting of Stockholders, where it appears under 
the headings “Board of Directors,” “Executive Officers,” and, if applicable, “Delinquent Section 16(a) Reports.”

Code of Ethics

We have adopted a Code of Ethics that applies to all our directors, officers and employees. We publicize the Code of Ethics 
through posting the policy on our investor relations website, ir.cytokinetics.com. We will disclose on our investor relations website any 
waivers of, or amendments to, our Code of Ethics that applies to the Company's principal executive officer, principal financial officer, 
principal accounting officer or any person performing similar functions within four business days following the date of such amendment 
or waiver rather than filing a Current Report on Form 8-K.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated by reference from our definitive Proxy Statement for our 2024 Annual 

Meeting of Stockholders, where it appears under the heading “Executive Compensation” and “Director Compensation.”

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED 
STOCKHOLDER MATTERS 

The information required by this item is incorporated by reference from our definitive Proxy Statement for our 2024 Annual 
Meeting of Stockholders, where it appears under the headings “Security Ownership of Certain Beneficial Owners and Management” 
and “Executive Compensation – Equity Compensation Plans at December 31, 2023.”

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE 

The information required by this item is incorporated by reference from our definitive Proxy Statement for our 2024 Annual 
Meeting of Stockholders, where it appears under the headings “Certain Business Relationships and Related Party Transactions” and 
“Board of Directors – Independence of Directors.”

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES 

The information required by this item is incorporated by reference from our definitive Proxy Statement for our 2024 Annual 
Meeting of Stockholders, where it appears under the headings “Proposal Three – Ratification of Selection of Ernst & Young LLP as our 
Independent Registered Public Accounting Firm for the Fiscal Year Ending December 31, 2024.

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ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES 

a) The following documents are filed as part of this Form 10-K:

(1) Financial Statements:

PART IV

Our Consolidated Financial Statements are listed in the “Index to Consolidated Financial Statements” under Part II. 
Item 8 of this Annual Report on Form 10-K. 

(2) Financial Statement Schedules:

Financial statement schedules have been omitted in this report because they are not applicable, not required under the 
instructions, or the information requested is set forth in the consolidated financial statements or related notes thereto.

b) Exhibits: 

EXHIBIT INDEX

Exhibit
No.

Exhibits

3.1

3.2

3.3

3.4

3.5

3.6

4.1

4.2

4.3

4.4

4.5

Amended and Restated Certificate of 
Incorporation.

Certificate of Amendment of Amended 
and Restated Certificate of Incorporation.

Certificate of Amendment of Amended 
and Restated Certificate of Incorporation.

Certificate of Amendment of Amended 
and Restated Certificate of Incorporation

Certificate of Amendment of Amended 
and Restated Certificate of Incorporation

  Amended and Restated Bylaws.

  Specimen Common Stock Certificate.

Form of Warrant Issuable to Oxford 
Finance LLC pursuant to that certain Loan 
and Security Agreement, dated as of May 
17, 2019, by and among the Company, 
Oxford Finance LLC and Silicon Valley 
Bank.

Base Indenture, dated November 13, 2019, 
between the Company and U.S. Bank 
National Association, as Trustee

First Supplemental Indenture, dated 
November 13, 2019, between the 
Company and U.S. Bank National 
Association, as Trustee (including the form 
of 4.00% Convertible Senior Note due 
2026)

Indenture, dated July 6, 2022, between the 
Company and U.S. Bank Trust Company, 
National Association, as Trustee (including 
the form of 3.50% Convertible Senior 
Notes due 2027)

Filed
  Herewith

Form

S-3

Incorporated by Reference

File No.

Filing Date

  333-174869

June 13, 2011

10-Q

000-50633

August 4, 2011

8-K

8-K

000-50633

June 25, 2013

000-50633

May 20, 2016

10-Q

000-50633

August 3, 2023

8-K

10-Q

10-Q

000-50633   November 17, 2023  

000-50633  

May 9, 2007

000-50633

August 9, 2019

Exh.
No.

3.1

3.2

5.1

3.1

3.5

3.1

4.1

4.2

8-K

000-50633

November 13, 2019

4.1

8-K

000-50633

November 13, 2019

4.2

8-K

000-50633

July 6, 2022

4.1

110

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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4.6

4.7

4.8

4.9

10.1

10.2

10.3

10.4

10.5

10.6

10.7

10.8+

10.9+

10.10+

10.11+

10.12+

10.13+

10.14+

10.15+

10.16+

Description of Securities

Certificate of Designation

Certificate of Designation

Certificate of Change of Registered Agent

Lease, dated July 24, 2019, by and between
the Company and KR Oyster Point 1, LLC

First Amendment to Lease, dated May 12,
2020, by and between the Company and KR
Oyster Point 1, LLC

Second  Amendment 
to  Lease,  dated
January  26,  2021,  by  and  between  the
Company and KR Oyster Point 1, LLC

Third  Amendment 
to  Lease,  dated 
November  12,  2021,  by  and  between  the 
Company and KR Oyster Point 1, LLC

Fourth Amendment to Lease, dated October 
12, 2022, by and between the Company and
KR Oyster Point 1, LLC

Fifth Amendment to Lease, dated 
November 27, 2023, by and between the 
Company and KR Oyster Point 1, LLC

Form of Indemnification Agreement 
between the Company and each of its 
directors and executive officers

Amended and Restated Executive 
Employment Agreement, dated May 21, 
2007, by and between the Company and 
Robert Blum

Form of Amendment No. 1 to Amended 
and Restated Executive Employment 
Agreements

Amended and Restated 2004 Equity 
Incentive Plan

Amended and Restated 2015 Employee 
Stock Purchase Plan

Form of Option Agreement (Employee 
Annual Grant)

Form of Option Agreement (New Hire 
Inducement)

Form of Option Agreement (Director 
Annual Grant)

Form of Option Agreement (Director 
Onboarding)

Form of Restricted Stock Unit Award 
Agreement (Employee Annual Grant)

10-K

8-K

8-K

10-K

10-Q

000-50633

March 1, 2023

000-50633

April 18, 2011

000-50633

June 30, 2012

000-50633

March 1, 2023

4.6

4.5

4.1

4.9

000-50633

November 1, 2019

10.52

10-K

000-50633

February 26, 2021

10.59

10-K

000-50633

February 26, 2021

10.60

10-K

000-50633

February 25, 2022

10.4

10-K

000-50633

March 1, 2023

10.5

X

10-Q

000-50633

August 5, 2008

10.1

10-Q

000-50633

August 5, 2008

10.69

10-K

000-50633

March 12, 2009

10.68

10-K

000-50633

March 1, 2023

10.9

DEF 14A

000-50633

March 26, 2020

Appendix 
A

10-K

000-50633

March 1, 2023

10.11

10-K

000-50633

March 1, 2023

10.12

10-K

000-50633

March 1, 2023

10.13

10-K

000-50633

March 1, 2023

10.14

10-K

000-50633

March 1, 2023

10.15

111

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

10.17+

10.18+

10.19+

10.20#†

10.21#†

10.22#

10.23

10.24

10.25#†

10.26#

10.27#

Form of Restricted Stock Unit Award 
Agreement (Employee Key Performer)

Form of Restricted Stock Unit Award 
Agreement (Director Annual Grant)

Form of Executive Employment 
Agreement between the Company and its 
executive officers

License and Collaboration Agreement, 
dated July 14, 2020, by and between the 
Company and Ji Xing Pharmaceuticals 
Limited

License and Collaboration Agreement, 
dated December 20, 2021, by and between 
the Company and Ji Xing Pharmaceuticals 
Limited

Development Funding Loan Agreement, 
dated January 7, 2022, by and among 
Royalty Pharma Development Funding, 
LLC and the Company

First Amendment to Development Funding 
Loan Agreement, dated July 6, 2022, by 
and among Royalty Pharma Development 
Funding, LLC and the Company

Second Amendment to Development 
Funding Loan Agreement, dated December 
8, 2022, by and among Royalty Pharma 
Development Funding, LLC and the 
Company

Royalty Purchase Agreement, dated 
February 1, 2017, by and between the 
Company and RPI Finance Trust

Amendment No. 1 to Royalty Purchase 
Agreement, dated January 7, 2022, by and 
between the Company and RPI Finance 
Trust

Revenue Participation Right Purchase 
Agreement, dated January 7, 2022, by and 
between the Company and Royalty Pharma 
Investments 2019 ICAV

10.28+

Description of Director Compensation

10.29

10.30

23.1

Amended and Restated Controlled Equity 
OfferingSM Sales Agreement, dated as of 
March 1, 2023, by and between the 
Company and Cantor Fitzgerald & Co.

Cytokinetics, Incorporated Executive 
Severance Plan and Summary Plan 
Description

Consent of independent registered public 
accounting firm

10-K

000-50633

March 1, 2023

10.16

10-K

000-50633

March 1, 2023

10.17

10-K

000-50633

March 7, 2014

10.39

10-Q/A

000-50633

March 11, 2021

10.1

10-K

000-50633

February 25, 2022

10.14

10-K

000-50633

February 25, 2022

10.18

10-K

000-50633

March 1, 2023

10.22

10-K

000-50633

March 1, 2023

10.23

10-K

000-50633

March 6, 2017

10.44

10-K

000-50633

February 25, 2022

10.20

10-K

000-50633

February 25, 2022

10.21

10-Q

10-K

000-50633

November 4, 2022

10.1

000-50633

March 1, 2023

10.28

8-K

000-50633

October 3, 2023

10.1

112

X

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

24.1

31.1

31.2

32.1

97.1

101.INS

101.SCH

101.CAL

101.DEF

101.LAB

101.PRE

104

Power of Attorney (included in the 
signature page to this report)

Certification of Principal Executive Officer 
pursuant to Section 302 of the Sarbanes-
Oxley Act of 2002

Certification of Principal Accounting 
Officer pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002

Certifications of the Principal Executive 
Officer, the Principal Financial Officer, 
and the Principal Accounting Officer 
pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002 (18 U.S.C. Section 
1350) (1)

Incentive Compensation Recoupment 
Policy

Inline XBRL Instance Document (the 
Instance Document does not appear in the 
Interactive Data File because its XBRL 
tags are embedded within the Inline XBRL 
document)

Inline XBRL Taxonomy Extension 
Schema Document

Inline XBRL Taxonomy Extension 
Calculation Linkbase Document

Inline XBRL Taxonomy Extension 
Definition Linkbase Document

Inline XBRL Taxonomy Extension Label 
Linkbase Document

Inline XBRL Taxonomy Extension 
Presentation Linkbase Document

Cover Page Interactive Data File 
(formatted as Inline XBRL in Exhibit 101)

X

X

X

X

X

X

X

X

X

X

X

X

# Portions of this Exhibit have been omitted as being immaterial and would be competitively harmful if publicly disclosed or is of the 
type of information Cytokinetics treats as confidential.

†  Schedules  have  been  omitted  pursuant  to  Item  601(a)(5)  of  Regulation  S-K  and  will  be  furnished  on  a  supplemental  basis  to  the 
Securities and Exchange Commission upon request. 

+ Management contract or compensatory plan.

(1)

This  certification  accompanies  the  Form  10-K  to  which  it  relates,  is  not  deemed  filed  with  the  Securities  and  Exchange 
Commission and is not to be incorporated by reference into any filing of the Registrant under the Securities Act of 1933, as 
amended,  or  the  Securities  Exchange  Act  of  1934,  as  amended  (whether  made  before  or  after  the  date  of  the  Form  10-K), 
irrespective of any general incorporation language contained in such filing.

(b) Exhibits

The exhibits listed under Item 15(a)(3) hereof are filed as part of this Form 10-K, other than Exhibit 32.1 which shall be 
deemed furnished.

113

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

(c) Financial Statement Schedules

None — All financial statement schedules are omitted because the information is inapplicable or presented in the notes to 
the financial statements.

ITEM 16. FORM 10-K SUMMARY

None.

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Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities and Exchange Act of 1934, the Registrant has duly caused 

this report to be signed on its behalf by the undersigned, thereunto duly authorized.

CYTOKINETICS, INCORPORATED

By:

/ S /    ROBERT I. BLUM
Robert I. Blum
President, Chief Executive Officer and Director

Dated: February 28, 2024

POWER OF ATTORNEY

KNOW  ALL  PERSONS  BY  THESE  PRESENTS,  that  each  person  whose  signature  appears  below  constitutes  and  appoints 
Robert I. Blum and Robert Wong, and each of them, his or her true and lawful attorneys-in-fact, each with full power of substitution, 
for him or her in any and all capacities, to sign any amendments to this Annual Report on Form 10-K and to file the same, with exhibits 
thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming 
all that each of said attorneys-in-fact or their substitute or substitutes may do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities and Exchange Act of 1934, this report has been signed below by the following 

persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature

Title

/s/    ROBERT I. BLUM        
Robert I. Blum

/s/    ROBERT C. WONG 
Robert C. Wong

/s/    JOHN T. HENDERSON
John T. Henderson, M.B. Ch.B.

/s/    MUNA BHANJI
Muna Bhanji

/s/    SANTO J. COSTA
Santo J. Costa

/s/    ROBERT A. HARRINGTON
Robert A. Harrington, M.D.

/s/    EDWARD M. KAYE
Edward M. Kaye, M.D.

/s/    B. LYNNE PARSHALL
B. Lynne Parshall

/s/    SANDFORD D. SMITH
Sandford D. Smith

/s/    WENDELL WIERENGA
Wendell Wierenga, Ph.D.

/s/    NANCY J. WYSENSKI
Nancy J. Wysenski

Date

February 28, 2024

President, Chief Executive Officer and Director 
(Principal Executive Officer, Principal Financial 
Officer)

Vice President, Chief Accounting Officer (Principal 
Accounting Officer)

February 28, 2024

Chairman of the Board of Directors

February 28, 2024

February 28, 2024

February 28, 2024

February 28, 2024

February 28, 2024

February 28, 2024

February 28, 2024

February 28, 2024

February 28, 2024

Director

Director

Director

Director

Director

Director

Director

Director

115

 
  
 
  
 
     
 
  
 
  
 
  
 
  
 
  
 
[THIS PAGE INTENTIONALLY LEFT BLANK]

 
 
 
EXECUTIVE MANAGEMENT

Robert I. Blum
(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)

Prodromos Anthopoulos, M.D.
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:43)(cid:72)(cid:68)(cid:71)(cid:3)(cid:82)(cid:73)(cid:3)(cid:48)(cid:72)(cid:71)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:36)(cid:909)(cid:68)(cid:76)(cid:85)(cid:86)(cid:3)(cid:40)(cid:88)(cid:85)(cid:82)(cid:83)(cid:72)

Andrew Callos
Executive Vice President, Chief Commercial 
(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)

Daniel R. Casper
Vice President, Information Technology

Ajay Chawla, M.D., Ph.D.
Vice President, Translational Sciences

Steven M. Cook 
Senior Vice President, Global Supply Chain and 
Technical Operations

Joseph Dagher
Senior Vice President, Head of Europe

YulyMae DiNapoli
Vice President, Human Resources

Erin Donnelly
Vice President, Portfolio and Project 
Management

Genie Dubuk
Vice President, Customer Experience 
and Insights

John O. Faurescu, Esq.
Vice President, Associate General Counsel 
and Corporate Secretary 

Katia Finck
Vice President, Head of Market Access Europe 

Stephen B. Heitner, M.D.
Vice President, Clinical Research and 
Therapeutic Area Lead, Cardiovascular

John Jacoppi 
Vice President, (cid:36)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)U.S. Marketing

Scott R. Jordan
Senior Vice President, Global Marketing 
and Commercial Strategy

Daniel E. Kates, M.D., M.B.A. 
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:48)(cid:72)(cid:71)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:36)(cid:909)(cid:68)(cid:76)(cid:85)(cid:86)

Stuart Kupfer, M.D.
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:48)(cid:72)(cid:71)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)

Kari K. Loeser, J.D.
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:38)(cid:82)(cid:80)(cid:83)(cid:79)(cid:76)(cid:68)(cid:81)(cid:70)(cid:72)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)

(cid:45)(cid:72)(cid:909)(cid:3)(cid:47)(cid:82)(cid:87)(cid:93)
Vice President, Sales and Operations

Fady I. Malik, M.D., Ph.D., F.A.C.C.
Executive Vice President, Research and 
Development

Lisa Meng, Ph.D.
Vice President, Biometrics

Bradley P. Morgan, Ph.D.
Senior Vice President, Research and 
Non-Clinical Development

Anne M. Murphy, Ph.D.
Vice President, Biology

CORPORATE PROFILE

Christine Murray
Senior Vice President, Regulatory and Quality

Richey Neuman, M.D., M.P.H.
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:48)(cid:72)(cid:71)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:36)(cid:909)(cid:68)(cid:76)(cid:85)(cid:86)

Stacy A. Rudnicki, M.D.
Vice President, Clinical Research and 
Therapeutic Area Lead, Neuromuscular

Elisabeth A. Schnieders, Ph.D.
Senior Vice President, Business Development

Eric Terhaerdt
Senior Vice President, Development Operations

Norma Tom, Ph.D.
Vice President, Chemistry, Manufacturing 
and Control

Megan Truong
Vice President, Quality

Diane Weiser
(cid:54)(cid:72)(cid:81)(cid:76)(cid:82)(cid:85)(cid:3)(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:38)(cid:82)(cid:85)(cid:83)(cid:82)(cid:85)(cid:68)(cid:87)(cid:72)(cid:3)(cid:36)(cid:909)(cid:68)(cid:76)(cid:85)(cid:86)

Robert C. Wong
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:36)(cid:70)(cid:70)(cid:82)(cid:88)(cid:81)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)

Matt Yang
Vice President, Corporate Finance and 
Financial Planning and Analysis

BOARD OF DIRECTORS

John T. Henderson, M.B., Ch.B.
Chairman, Cytokinetics, Incorporated, Former 
(cid:57)(cid:76)(cid:70)(cid:72)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:15)(cid:3)(cid:51)(cid:564)(cid:93)(cid:72)(cid:85)(cid:3)(cid:51)(cid:75)(cid:68)(cid:85)(cid:80)(cid:68)(cid:70)(cid:72)(cid:88)(cid:87)(cid:76)(cid:70)(cid:68)(cid:79)(cid:86)(cid:3)(cid:42)(cid:85)(cid:82)(cid:88)(cid:83)

Robert I. Blum
(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)(cid:15)(cid:3)
Cytokinetics, Incorporated

Muna Bhanji
Former Senior Vice President, Global Market 
Access and Policy, Merck & Co., Inc.

Santo J. Costa
(cid:41)(cid:82)(cid:85)(cid:80)(cid:72)(cid:85)(cid:3)(cid:51)(cid:85)(cid:72)(cid:86)(cid:76)(cid:71)(cid:72)(cid:81)(cid:87)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)(cid:15)(cid:3)
Quintiles Transnational Corporation

Robert A. Harrington, M.D.
Cardiologist, Stephen and Suzanne Weiss Dean 
of Weill Cornell Medicine and Provost for 
(cid:48)(cid:72)(cid:71)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:36)(cid:909)(cid:68)(cid:76)(cid:85)(cid:86)(cid:15)(cid:3)(cid:38)(cid:82)(cid:85)(cid:81)(cid:72)(cid:79)(cid:79)(cid:3)(cid:56)(cid:81)(cid:76)(cid:89)(cid:72)(cid:85)(cid:86)(cid:76)(cid:87)(cid:92)

Edward M. Kaye, M.D.
(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:40)(cid:91)(cid:72)(cid:70)(cid:88)(cid:87)(cid:76)(cid:89)(cid:72)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)(cid:15)(cid:3)(cid:54)(cid:87)(cid:82)(cid:78)(cid:72)(cid:3)(cid:55)(cid:75)(cid:72)(cid:85)(cid:68)(cid:83)(cid:72)(cid:88)(cid:87)(cid:76)(cid:70)(cid:86)(cid:15)(cid:3)(cid:918)(cid:81)(cid:70)(cid:17)

B. Lynne Parshall, Esq.
(cid:41)(cid:82)(cid:85)(cid:80)(cid:72)(cid:85)(cid:3)(cid:38)(cid:75)(cid:76)(cid:72)(cid:73)(cid:3)(cid:50)(cid:83)(cid:72)(cid:85)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)(cid:15)(cid:3)
Ionis Pharmaceuticals

Sandford D. Smth
Former Executive Vice President, 
Genzyme Corporation

Wendell Wierenga, Ph.D.
Former Executive Vice President, 
Research and Development, Santarus, Inc.

Nancy Wysenski
Former Executive Vice President and Chief 
(cid:38)(cid:82)(cid:80)(cid:80)(cid:72)(cid:85)(cid:70)(cid:76)(cid:68)(cid:79)(cid:3)(cid:50)(cid:605)(cid:70)(cid:72)(cid:85)(cid:15)(cid:3)(cid:57)(cid:72)(cid:85)(cid:87)(cid:72)(cid:91)(cid:3)(cid:51)(cid:75)(cid:68)(cid:85)(cid:80)(cid:68)(cid:70)(cid:72)(cid:88)(cid:87)(cid:76)(cid:70)(cid:68)(cid:79)(cid:86)

CORPORATE SECRETARY

John O. Faurescu, Esq.
Cytokinetics, Incorporated

INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

Ernst & Young LLP
Redwood City, California

CORPORATE COUNSEL

Cooley LLP
Palo Alto, California

REGISTRAR AND TRANSFER AGENT

Inquiries regarding change of address, lost stock 
(cid:70)(cid:72)(cid:85)(cid:87)(cid:76)(cid:564)(cid:70)(cid:68)(cid:87)(cid:72)(cid:86)(cid:15)(cid:3)(cid:70)(cid:75)(cid:68)(cid:81)(cid:74)(cid:72)(cid:86)(cid:3)(cid:76)(cid:81)(cid:3)(cid:86)(cid:87)(cid:82)(cid:70)(cid:78)(cid:3)(cid:82)(cid:90)(cid:81)(cid:72)(cid:85)(cid:86)(cid:75)(cid:76)(cid:83)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
other matters related to stock ownership should 
be directed to the transfer agent.

Computershare
(cid:23)(cid:25)(cid:21)(cid:3)(cid:54)(cid:82)(cid:88)(cid:87)(cid:75)(cid:3)(cid:23)(cid:87)(cid:75)(cid:3)(cid:54)(cid:87)(cid:85)(cid:72)(cid:72)(cid:87)
(cid:47)(cid:82)(cid:88)(cid:76)(cid:86)(cid:89)(cid:76)(cid:79)(cid:79)(cid:72)(cid:15)(cid:3)(cid:46)(cid:60)(cid:3)(cid:23)(cid:19)(cid:21)(cid:19)(cid:21)

Phone (800) 837-8091

Foreign Shareholders (201) 680-6578

computershare.com/investor

ANNUAL MEETING

The annual meeting of stockholders will be held 
(cid:68)(cid:87)(cid:3)(cid:20)(cid:19)(cid:29)(cid:19)(cid:19)(cid:3)(cid:36)(cid:48)(cid:3)(cid:82)(cid:81)(cid:3)(cid:48)(cid:68)(cid:92)(cid:3)(cid:20)(cid:24)(cid:15)(cid:3)(cid:21)(cid:19)(cid:21)(cid:23)(cid:3)(cid:68)(cid:87)(cid:29)

Cytokinetics, Incorporated
350 Oyster Point Blvd.
(cid:54)(cid:82)(cid:88)(cid:87)(cid:75)(cid:3)(cid:54)(cid:68)(cid:81)(cid:3)(cid:41)(cid:85)(cid:68)(cid:81)(cid:70)(cid:76)(cid:86)(cid:70)(cid:82)(cid:15)(cid:3)(cid:38)(cid:36)(cid:3)(cid:28)(cid:23)(cid:19)(cid:27)(cid:19)

COMMON STOCK

The company’s common stock is traded on the 
NASDAQ Exchange, symbol: CYTK

STOCKHOLDER INQUIRIES

Stockholder and investor inquiries and requests 
for information should be directed to: 

Investor Relations
Cytokinetics, Incorporated
350 Oyster Point Blvd.
(cid:54)(cid:82)(cid:88)(cid:87)(cid:75)(cid:3)(cid:54)(cid:68)(cid:81)(cid:3)(cid:41)(cid:85)(cid:68)(cid:81)(cid:70)(cid:76)(cid:86)(cid:70)(cid:82)(cid:15)(cid:3)(cid:38)(cid:36)(cid:3)(cid:28)(cid:23)(cid:19)(cid:27)(cid:19)
(cid:11)(cid:25)(cid:24)(cid:19)(cid:12)(cid:3)(cid:25)(cid:21)(cid:23)(cid:16)(cid:22)(cid:19)(cid:25)(cid:19)
investor@cytokinetics.com

CORPORATE INFORMATION

Cytokinetics, Incorporated
350 Oyster Point Blvd.
(cid:54)(cid:82)(cid:88)(cid:87)(cid:75)(cid:3)(cid:54)(cid:68)(cid:81)(cid:3)(cid:41)(cid:85)(cid:68)(cid:81)(cid:70)(cid:76)(cid:86)(cid:70)(cid:82)(cid:15)(cid:3)(cid:38)(cid:36)(cid:3)(cid:28)(cid:23)(cid:19)(cid:27)(cid:19)

(cid:48)(cid:68)(cid:76)(cid:81)(cid:3)(cid:87)(cid:72)(cid:79)(cid:72)(cid:83)(cid:75)(cid:82)(cid:81)(cid:72)(cid:29)(cid:3)(cid:11)(cid:25)(cid:24)(cid:19)(cid:12)(cid:3)(cid:25)(cid:21)(cid:23)(cid:16)(cid:22)(cid:19)(cid:19)(cid:19)(cid:3)(cid:82)(cid:85)(cid:3)
(cid:11)(cid:27)(cid:22)(cid:22)(cid:12)(cid:3)(cid:25)(cid:21)(cid:23)(cid:16)(cid:21)(cid:25)(cid:23)(cid:19)

cytokinetics.com

FORWARD-LOOKING STATEMENTS

This letter contains forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995 (the “Act”). Cytokinetics claims the protection 
of the Act’s Safe Harbor for forward-looking statements. Examples of such statements include, but not limited to, statements, express or implied, relating to our 
or our partners’ research and development and commercial readiness activities, including the initiation, conduct, design, enrollment, progress, continuation, 
(cid:70)(cid:82)(cid:80)(cid:83)(cid:79)(cid:72)(cid:87)(cid:76)(cid:82)(cid:81)(cid:15)(cid:3)(cid:87)(cid:76)(cid:80)(cid:76)(cid:81)(cid:74)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)(cid:85)(cid:72)(cid:86)(cid:88)(cid:79)(cid:87)(cid:86)(cid:3)(cid:82)(cid:73)(cid:3)(cid:68)(cid:81)(cid:92)(cid:3)(cid:82)(cid:73)(cid:3)(cid:82)(cid:88)(cid:85)(cid:3)(cid:70)(cid:79)(cid:76)(cid:81)(cid:76)(cid:70)(cid:68)(cid:79)(cid:3)(cid:87)(cid:85)(cid:76)(cid:68)(cid:79)(cid:86)(cid:15)(cid:3)(cid:86)(cid:87)(cid:68)(cid:87)(cid:72)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:85)(cid:72)(cid:79)(cid:68)(cid:87)(cid:76)(cid:81)(cid:74)(cid:3)(cid:87)(cid:82)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:83)(cid:82)(cid:87)(cid:72)(cid:81)(cid:87)(cid:76)(cid:68)(cid:79)(cid:3)(cid:83)(cid:68)(cid:87)(cid:76)(cid:72)(cid:81)(cid:87)(cid:3)(cid:83)(cid:82)(cid:83)(cid:88)(cid:79)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:90)(cid:75)(cid:82)(cid:3)(cid:70)(cid:82)(cid:88)(cid:79)(cid:71)(cid:3)(cid:69)(cid:72)(cid:81)(cid:72)(cid:564)(cid:87)(cid:3)(cid:73)(cid:85)(cid:82)(cid:80)(cid:3)(cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81), CK-586 or any 
of our other drug candidates; our ability to obtain regulatory approval from FDA or any other regulatory body for (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81), CK-586 or any of our other drug 
candidates in 2025 or at any other time, our ability to launch (cid:68)(cid:564)(cid:70)(cid:68)(cid:80)(cid:87)(cid:72)(cid:81)(cid:3)in 2025 or at any other time, and our ability to commence a Phase 2 clinical trial of CK-586 
(cid:76)(cid:81)(cid:3)(cid:87)(cid:75)(cid:72)(cid:3)(cid:86)(cid:72)(cid:70)(cid:82)(cid:81)(cid:71)(cid:3)(cid:75)(cid:68)(cid:79)(cid:73)(cid:3)(cid:82)(cid:73)(cid:3)(cid:21)(cid:19)(cid:21)(cid:23)(cid:17)(cid:3)(cid:54)(cid:88)(cid:70)(cid:75)(cid:3)(cid:86)(cid:87)(cid:68)(cid:87)(cid:72)(cid:80)(cid:72)(cid:81)(cid:87)(cid:86)(cid:3)(cid:68)(cid:85)(cid:72)(cid:3)(cid:69)(cid:68)(cid:86)(cid:72)(cid:71)(cid:3)(cid:82)(cid:81)(cid:3)(cid:80)(cid:68)(cid:81)(cid:68)(cid:74)(cid:72)(cid:80)(cid:72)(cid:81)(cid:87)(cid:10)(cid:86)(cid:3)(cid:70)(cid:88)(cid:85)(cid:85)(cid:72)(cid:81)(cid:87)(cid:3)(cid:72)(cid:91)(cid:83)(cid:72)(cid:70)(cid:87)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)(cid:15)(cid:3)(cid:69)(cid:88)(cid:87)(cid:3)(cid:68)(cid:70)(cid:87)(cid:88)(cid:68)(cid:79)(cid:3)(cid:85)(cid:72)(cid:86)(cid:88)(cid:79)(cid:87)(cid:86)(cid:3)(cid:80)(cid:68)(cid:92)(cid:3)(cid:71)(cid:76)(cid:909)(cid:72)(cid:85)(cid:3)(cid:80)(cid:68)(cid:87)(cid:72)(cid:85)(cid:76)(cid:68)(cid:79)(cid:79)(cid:92)(cid:3)(cid:71)(cid:88)(cid:72)(cid:3)(cid:87)(cid:82)(cid:3)(cid:89)(cid:68)(cid:85)(cid:76)(cid:82)(cid:88)(cid:86)(cid:3)(cid:85)(cid:76)(cid:86)(cid:78)(cid:86)(cid:3)(cid:68)(cid:81)(cid:71)(cid:3)
uncertainties,  including,  but  not  limited  to  Cytokinetics’  need  for  additional  funding  and  such  additional  funding  may  not  be  available  on  acceptable  terms, 
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or production of Cytokinetics’ drug candidates that could slow or prevent clinical development or product approval; patient enrollment for or conduct of clinical 
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may  incur  unanticipated  research  and  development  and  other  costs;  standards  of  care  may  change,  rendering  Cytokinetics’  drug  candidates  obsolete;  and 
competitive  products  or  alternative  therapies  may  be  developed  by  others  for  the  treatment  of  indications  Cytokinetics’  drug  candidates  and  potential  drug 
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the Securities and Exchange Commission, particularly under the caption “Risk Factors” in Cytokinetics’ 2023 Annual Report on Form 10-K enclosed herewith.

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