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Cassava Sciences, Inc.

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FY2019 Annual Report · Cassava Sciences, Inc.
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_______________

Form 10-K
_______________

(Mark One)

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

For the Fiscal Year Ended December 31, 2019
or

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

For the transition period from _____ to _____

Commission File Number: 000-29959

Cassava Sciences, Inc.

(Exact name of registrant as specified in its charter)

Delaware 
(State or other jurisdiction of
incorporation or organization)

91-1911336 
(I.R.S. Employer
Identification Number)

7801 N. Capital of Texas Highway,  Suite 260,  Austin,  TX 78731
 (512)  501-2444
(Address, including zip code, of registrant's principal executive offices and
telephone number, including area code)

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

0

Title of each class
Common Stock, $0.001 par value

Trading
Symbol(s)
SAVA

Name of each exchange on which registered
NASDAQ Capital 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 ☐  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 ☑
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 ☑  No ☐

Indicate by check mark whether the registrant has submitted electronically every 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 ☑  No ☐.

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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.  (Check one):

Large accelerated filer  ☐
Non-accelerated filer    ☑

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. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes ☐  No ☑
The aggregate market value of the voting and non-voting common equity held by non-affiliates was $19,381,188  computed by reference to the last sales
price of $1.21 as reported on the Nasdaq Capital Market, as of the last business day of the Registrant's most recently completed second fiscal quarter, June 28,
2019. The number of shares outstanding of the Registrant's common stock on March 19, 2020 was 24,729,902.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's Proxy Statement for its 2020 Annual Meeting of Stockholders (the Proxy Statement), to be filed with the U.S. Securities and

Exchange Commission, are incorporated by reference to Part III of this Form 10-K Report.

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CASSAVA SCIENCES, INC.

FORM 10-K
INDEX

PART I

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

PART II

Market  for  Registrant’s  Common  Equity,  Related  Stockholder  Matters  and  Issuer  Purchases  of
Equity Securities
Selected Financial Data
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 

PART III

Directors and 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 2.
Item 3.
Item 4.

Item 5.

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

Item 10.
Item 11.
Item 12.

Item 13.
Item 14.

Item 15.
Item 16.

Exhibits and Financial Statement Schedules
Form 10-K Summary

PART IV

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PART I

FORWARD-LOOKING STATEMENTS

This  Annual  Report  on  Form  10-K  contains  forward-looking  statements  within  the  meaning  of  the  Private  Securities
Reform  Act  of  1995.  All  statements  other  than  statements  of  historical  facts  contained  in  this  Annual  Report  are  forward-
looking statements. We intend that such statements be protected by the safe harbor created thereby. Forward-looking statements
relate  to  expectations,  beliefs,  projections,  future  plans  and  strategies,  anticipated  events  or  trends  and  similar  expressions
concerning matters that are not historical facts. In some cases, you can identify forward-looking statements by terms such as
“anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “should,” “will” and “would” or the
negatives of these terms or other comparable terminology.

The forward-looking statements are based on our beliefs, assumptions and expectations of our future performance, taking
into account all information currently available to us. 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.  Such
forward-looking  statements  and  our  business  are  subject  to  numerous  risks  and  uncertainties  that  you  should  consider
before investing in our Company. These risks are described more fully in the section titled “Risk Factors.” Accordingly, you
should not rely upon forward-looking statements as predictions of future events. Examples of such forward-looking statements
include, but are not limited to statements about:

·

·

·

·

·

·

·

·

·

·

·

·

·

·

·

Our  ability  to  initiate,  conduct  or  analyze  studies  with  PTI-125  or  SavaDx  (formerly  referred  to  as  PTI-
125Dx), our lead product candidates targeted at Alzheimer’s disease and other neurodegenerative diseases;

our estimated timeline for announcing top-line results of a Phase 2b study of PTI-125;

our estimated timeline for testing clinical samples with SavaDx, our investigational blood-based diagnostic;

our  intention  to  conduct  additional  clinical  studies  of  PTI-125  or  SavaDx,  the  anticipated  scope  of  such
studies and our estimated timeline for doing so;

the beneficial characteristics, safety, efficacy, and therapeutic effects of our product candidates, such as PTI-
125 or SavaDx;

the utility of protection, or the sufficiency, of our intellectual property;

our potential competitors or competitive products;

expected future sources of revenue and capital and increasing cash needs;

our continued reliance on third parties to conduct additional clinical studies of our product candidates, and for
the manufacture of our product candidates;

expectations  regarding  trade  secrets,  technological  innovations,  licensing  agreements  and  outsourcing  of
certain business functions;

our expenses increasing or fluctuations in our financial or operating results;

our operating losses and anticipated operating and capital expenditures;

expectations regarding the issuance of shares of common stock to employees pursuant to equity compensation
awards, net of employment taxes;

our ability to maintain compliance with the ongoing listing requirements for the Nasdaq Capital Market;

the development and maintenance of our internal systems and infrastructure;

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·

·

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our need to hire additional personnel and our ability to attract and retain such personnel;

existing regulations and regulatory developments in the United States and other jurisdictions;

the sufficiency of our current resources to continue to fund our operations;

the  accuracy  of  our  estimates  regarding  expenses,  capital  requirements,  and  needs  for  additional  financing;
and

assumptions and estimates used for our disclosures regarding stock-based compensation.

We  cannot  assure  you  that  we  will  realize  the  results  or  developments  we  expect  or  anticipate  or,  even  if  substantially
realized,  that  they  will  result  in  the  consequences  or  affect  us  or  our  operations  in  the  way  we  expect.  The  forward-looking
statements included in this Annual Report on Form 10-K are made only as of the date hereof. We undertake no obligation to
publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as
required by law.

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 report, 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 you are cautioned not to unduly rely upon these statements.

Our research programs in neurodegeneration benefits from longstanding scientific and financial support from the National
Institutes of Health (NIH). The contents of this Annual Report are solely our responsibility and do not necessarily represent any
official views of NIH.

Item 1.    Business

Overview

Cassava  Sciences,  Inc.  is  a  clinical  stage  biotechnology  company.  Our  mission  is  to  detect  and  treat  neurodegenerative
diseases, such as Alzheimer’s disease. Our novel science is based on stabilizing – but not removing – a critical protein in the
brain.

Over the past 10 years, we have combined state-of-the-art technology with new insights in neurobiology to develop novel
solutions  for  Alzheimer’s  disease  and  other  neurodegenerative  diseases.  Our  strategy  is  to  leverage  our  unique
scientific/clinical platform to develop a first-in-class program for treating neurodegenerative diseases, such as Alzheimer’s.  

We currently have two clinical-stage biopharmaceutical assets under development:

·

·

our lead therapeutic product candidate, called PTI-125, for the treatment of Alzheimer’s disease; and

our  lead  investigational  diagnostic  product  candidate,  called  SavaDx,  to  detect  Alzheimer’s  disease  from  a
small sample of blood, possibly years before the overt appearance of clinical symptoms.

Our scientific approach for the treatment of Alzheimer’s disease seeks to simultaneously improve both neurodegeneration
and neuroinflammation. We believe our ability to improve multiple vital functions in the brain represents a new, different and
crucial approach to address Alzheimer’s disease.

Our  lead  therapeutic  product  candidate,  PTI-125,  is  a  proprietary  small  molecule  (oral)  drug.  PTI-125  targets  an  altered
form of a protein called filamin A (FLNA) in the Alzheimer’s brain. Published studies have demonstrated that the altered form
of FLNA causes neuronal dysfunction, neuronal degeneration and neuroinflammation. 

We  believe  PTI-125  improves  brain  health  by  reverting  altered  FLNA  back  to  its  native,  healthy  confirmation,  thus

countering the downstream toxic effects of altered FLNA. We have generated and published experimental and clinical

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evidence of improved brain health with PTI-125. Importantly, PTI-125 is not dependent on clearing amyloid from the brain.
Since  PTI-125  has  a  unique  mechanism  of  action,  we  believe  its  potential  therapeutic  effects  may  be  additive  or  synergistic
with that of other therapeutic candidates aiming to treat neurodegeneration.

PTI-125  has  demonstrated  a  multitude  of  beneficial  effects  in  animal  models  of  disease,  including  normalizing

neurotransmission, decreasing neuroinflammation, suppressing neurodegeneration, and restoring memory and cognition. 

In  2019,  we  completed  a  small,  first-in-human,  clinical-proof-of-concept,  open-label  Phase  2a  study  of  PTI-125  in  the
U.S., with substantial support from the National Institute on Aging (NIA), a division of the NIH. Treatment with PTI-125 for 28
days  significantly  improved  key  biomarkers  of  Alzheimer’s  pathology,  neurodegeneration  and  neuroinflammation  (p<0.001).
 Biomarkers effects were seen in all patients in both cerebrospinal fluid (CSF) and plasma. To our knowledge, no other drug
candidate has improved an entire panel of biomarkers of in patients with Alzheimer’s disease. 

A  confirmatory,  randomized,  placebo-controlled,  multi-center  Phase  2b  study  of  PTI-125  in  Alzheimer’s  disease is  on-

going as of March 2020. We expect to announce Phase 2b results in approximately mid-2020.

Our  diagnostic  effort,  called  SavaDx,  is  an  early-stage  program  focused  on  detecting  Alzheimer’s  disease  from  a  small
sample  of  blood,  possibly  years  before  the  overt  appearance  of  clinical  symptoms.  We  are  developing  SavaDx  as  a  fast,
accurate and quantitative blood-based investigational biomarker/diagnostic to detect and monitor Alzheimer's disease. The goal
is to make the detection of Alzheimer’s disease as simple as getting a blood test. 

Alzheimer’s disease is a progressive neurodegenerative disorder that affects cognition, function and behavior. An estimated
5.8  million  Americans  are  living  with  Alzheimer’s  disease  in  2020,    according  to  the  Alzheimer’s  Association,  a  non-profit
organization. There are no disease-modifying drug therapies to treat the disease.  

PTI-125 and SavaDx were both discovered and designed in-house and were characterized by our academic collaborators
during research activities that were conducted from approximately 2008 to date. We own exclusive, worldwide rights to these
drug assets and related technologies, without royalty obligations to any third party. Our patent protection in this area currently
runs through 2034.

Our Scientific Approach is Different.

Over  the  last  ten  years,  we  have  developed  a  new  and  promising  scientific  approach  for  the  treatment  and  diagnosis  of
neurodegenerative diseases, such as Alzheimer’s disease. Importantly, we do not seek to clear amyloid out of the brain. Rather,
we seek to stabilize a critical protein in the brain that has many downstream effects.

Our scientific approach is to treat neurodegeneration by targeting an altered form of a scaffolding protein called FLNA.
Through  years  of  basic  research,  we  and  our  academic  collaborators  identified  FLNA  as  a  structurally  altered  protein  in  the
Alzheimer’s brain. We have shown that the altered form of FLNA is pervasive in the Alzheimer’s brain and undetectable in
healthy control brains.

Using  scientific  insight  and  advanced  techniques  in  molecular  biochemistry,  bioinformatics  and  imaging,  we  have
elucidated  this  protein  dysfunction.  Through  this  work,  we  have  produced  experimental  evidence  that  altered  FLNA  plays  a
critical role in Alzheimer’s disease. We engineered a family of high-affinity, small molecules to target this structurally altered
protein  and  restore  its  normal  shape  and  function.  This  family  of  small  molecules,  including  our  lead  therapeutic  candidate,
PTI-125, was designed in-house and characterized by our academic collaborators.

Our lead therapeutic product candidate, PTI-125, is a small molecule (oral) drug with a novel mechanism of action. The
target of PTI-125 is altered FLNA, the brain protein we seek to stabilize. Importantly, since PTI-125 has a unique mechanism
of action, we believe its potential therapeutic effects may be additive or synergistic with that of other therapeutic candidates
aiming to treat neurodegeneration.

Given  the  biopharmaceutical  industry’s  challenging  track  record  in  Alzheimer’s  research,  we  believe  there  is  an  urgent
need  to  consider  more  recent  and  innovative  approaches  to  combat  this  disease.  We  believe  our  scientific  approach  may
broaden the range of possible treatment approaches for this complex disease.

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Our science is based on stabilizing a critical protein in the brain.

Proteins are essential for cell function because they participate in virtually every biological process. If protein function is
impaired, the health consequences can be devastating. Technological advances in medicine and improvements in lifestyle are
making our lives longer. But with age, genetic mutations and other factors conspire against healthy cells, resulting in altered
proteins. Sometimes a cell can rid itself of altered proteins. However, when disease changes the shape and function of critical
proteins,  multiple  downstream  processes  are  impaired.  There  are  many  clinical  conditions  in  which  proteins  become
structurally altered and impair the normal function of cells, tissues and organs, leading to disease.  Conversely, restoring altered
proteins back to health –called proteostasis – is a well-accepted therapeutic strategy in clinical medicine.

For over 100 years, scientists have ascribed various neurodegenerative diseases to proteins that misfold and are rendered
pathological.  In  Alzheimer’s  disease,  certain  proteins,  such  as  amyloid  and  tau,  lose  their  normal  shape  and  function.  Such
misfolded  proteins  can  breakdown  or  aggregate  in  clumps  and  form  plaque  in  the  brain.  Destruction  of  neuronal  synapses,
accelerated nerve cell death, and dysfunction of the brain support cells, are all widely believed to be direct consequences of
misfolded proteins.

FLNA is a scaffolding protein widely found throughout the body. A healthy scaffolding protein brings multiple proteins
together,  initiating  their  interaction.  However,  an  altered  form  of  FLNA  protein  is  found  in  the  Alzheimer’s  brain.  Our
experimental evidence shows that altered FLNA protein contribute to Alzheimer’s disease by disrupting the normal function of
neurons, leading to neurodegeneration and brain inflammation. Our product candidate, PTI-125, aims to counter the altered and
toxic  form  of  FLNA  in  the  brain,  thus  restoring  the  normal  function  of  this  critical  protein.  Our  novel  science  is  based  on
stabilizing – but not removing – a critical protein in the brain.

One drug, multiple effects.

Our  lead  therapeutic  candidate,  PTI-125,  binds  to  altered  FLNA  with  very  high  (femtomolar)  affinity.  This  drug  effect
restores the normal shape of FLNA and the normal function of three key brain receptors: the alpha-7 nicotinic acetylcholine
receptor; the N-methyl-D-aspartate (NMDA) receptor; and the insulin receptor. These receptors have pivotal roles in brain cell
survival, cognition and memory. 

In animal models, treatment with PTI-125 resulted in dramatic improvements in brain health, such as reduced amyloid and
tau  deposits,  improved  receptor  signaling  and  improved  learning  and  memory.  In  addition,  PTI-125  has  another  beneficial
treatment effect of significantly reducing inflammatory cytokines in the brain. In animal models of disease, treatment with PTI-
125 greatly reduced levels of IL-6 and suppressed TNF-alpha and IL-1beta levels by 86% and 80%, respectively, illustrating a
powerful anti-neuroinflammatory effect. 

In  2019,  a  small,  first-in-patient,  clinical  proof-of-concept  Phase  2a  study  funded  by  NIH,  showed  that  open-label
treatment with PTI-125 for 28 days significantly improved key biomarkers of Alzheimer’s pathology, neuroinflammation and
neurodegeneration (p<0.001). By restoring function to multiple receptors and exerting powerful anti-inflammatory effects, we
believe our approach has potential to slow the progression of neurodegeneration in patients. Thus, we have designed PTI-125 to
slow or, potentially, even reverse the deterioration of brain cells. We believe the ability to simultaneously improve many vital
functions in the brain represents a new, different and crucial approach to combating neurodegeneration.

Our science is published in multiple peer-reviewed journals. In addition, our research has been supported by NIH under
multiple research grant awards. Each grant was awarded following an in-depth, peer-reviewed evaluation of our approach for
scientific and technical merit by a panel of outside experts in the field. Strong, long-term support from NIH has allowed us to
advance our two product candidates for neurodegeneration, PTI-125 and SavaDx, into clinical development.

Overview of Alzheimer’s disease.

Alzheimer’s disease is a progressive neurodegenerative disorder that has debilitating effects on patients' cognition, memory
and day-to-day functioning. Most cases of Alzheimer’s disease are age-related. Alzheimer’s disease has become markedly more
common with the aging of the U.S. population. The prevalence of Alzheimer's disease is widely expected to increase over time,
with 13.8 million people age 65 and older projected to have the disease by 2050 in the U.S., up from 5.6 million in 2019.

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According  to  the  non-profit  Alzheimer's  Association,  the  aggregate  cost  of  care  in  2019  for  patients  with  Alzheimer's
disease  and  other  types  of  dementia  in  the  U.S.  was  estimated  to  be  $234  billion.  The  prevalence  of  Alzheimer’s  disease  is
expected to nearly triple in the U.S. between now and 2050.  If this occurs, there is potential for Alzheimer's disease to cause a
major financial drain on the national economy.

Currently marketed drug therapies for Alzheimer’s disease have limited therapeutic effect.

There are no disease-modifying drug therapies to treat Alzheimer’s disease. The U.S. Food & Drug Administration (FDA)
has not approved any new drugs for Alzheimer’s disease since 2003. Currently marketed drug therapies focus solely on treating
symptoms, mostly in patients with mild-to-moderate Alzheimer's disease. At the time of diagnosis, patients are initiated on a
class of drugs called cholinesterase inhibitors. The Alzheimer’s brain has low levels of a neurotransmitter called acetylcholine.
Cholinesterase  inhibitors  prevent  an  enzyme  in  the  brain,  called  acetylcholinesterase,  from  breaking  down  acetylcholine.
Currently  marketed  cholinesterase  inhibitors  include  donepezil  (marketed  by  Eisai  Co.,  Ltd.  and  Pfizer,  Inc.  as  Aricept®),
rivastigmine  (marketed  by  Novartis  AG  as  Exelon®)  and  galantamine  (marketed  by  Janssen  Pharmaceuticals,  Inc.  as
Razadyne®). Cholinesterase inhibitors may benefit some patients for several months, after which the targeted brain receptors are
desensitized, and drug efficacy is lost.

PTI-125 is our Proprietary Drug for the Treatment of Alzheimer’s Disease.

We have generated and published experimental evidence of improved brain health by restoring altered FLNA with PTI-
125,  our  lead  therapeutic  product  candidate.  PTI-125  is  a  proprietary  small  molecule  drug  that  represents  an  entirely  new
scientific approach to treat neurodegeneration. Published studies have demonstrated that PTI-125 targets an altered form of a
protein  called  FLNA  that  is  pervasive  in  the  Alzheimer’s  brain.  Altered  FLNA  causes  neuronal  dysfunction,  neuronal
degeneration  and  neuroinflammation.  We  believe  our  drug  candidate,  PTI-125,  improves  brain  health  by  reverting  altered
FLNA back to its native, healthy confirmation, thus countering downstream toxic effects of altered FLNA. Importantly, PTI-
125 is not dependent on clearing amyloid from the brain. The following is a summary profile of PTI-125’s drug development
program. 

IND submission to FDA.

Over the past ten years, we successfully conducted basic research, in vitro studies and preclinical studies in support of an
Investigational New Drug (IND) submission to the FDA for PTI-125, including requisite studies around safety pharmacology,
toxicology, genotoxicity and bioanalytical methods. In 2017 we filed an IND with FDA for PTI-125.

Clinical safety of PTI-125 in a Phase 1 study.

Following FDA acceptance of our IND in 2017, we investigated the safety, dosing and pharmacokinetic profile of PTI-125
in healthy human volunteers. The design of our first-in-human Phase 1 study was based on regulatory feedback, clinical and
scientific rationale and observations from previously conducted preclinical and in vitro studies.

In a Phase 1 study, PTI-125 was evaluated in 24 healthy human volunteers in a single site in the U.S. for safety, tolerability
and pharmacokinetics. Study subjects were administered a single oral dose of 50, 100 or 200 mg of PTI-125. Drug was well-
tolerated in all subjects. Importantly, PTI-125 showed no treatment-related adverse effects and no dose-limiting safety findings.
Pharmacokinetic measurements demonstrated that PTI-125, a small molecule, was rapidly absorbed. Dose-proportionality was
observed over the full dose range of 50 to 200 mg. Results of this Phase 1 study were presented at the 10th Annual International
Conference on Clinical Studies on Alzheimer's Disease in 2017 (Figure 1).

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Figure 1. Phase 1 study results with PTI-125 in healthy volunteers demonstrated dose-proportional pharmacokinetics.

Given the absence of any observable dose-limiting effects in healthy adults in a Phase 1 study, a strong scientific rationale,
and multiple peer-reviewed publications and research grant awards, we believe this program demonstrated favorable proof-of-
principle for the development of PTI-125 in Alzheimer’s disease.

Phase 2 clinical development program for PTI-125.

In  2018,  we  mapped  out,  in  collaboration  with  outside  science  advisors  and  medical  experts,  a  strategic  clinical  plan  to
advance PTI-125 into a comprehensive Phase 2 clinical development program. The general objective of our Phase 2 program
with PTI-125 is to gain an initial estimate of the safety, tolerability and biological activity of this drug candidate in patients with
Alzheimer’s disease. We believe meaningful Phase 2 data may enable us to design and conduct a large-scale Phase 3 efficacy
program for PTI-125 and may also enable us to seek one or more strategic collaborations with pharmaceutical or biotechnology
companies.

Phase 2a Clinical Study 
In 2019, we completed a first-in-patient, clinical proof-of-concept study of PTI-125 in the U.S. Our Phase 2a was an open-
label,  multi-center,  safety  and  pharmacokinetic  study  of  PTI-125.  Thirteen  (13)  patients  with  mild-to-moderate  Alzheimer’s
disease, age 50-85, received 100 mg oral PTI-125 twice daily for 28 days. A diagnosis of Alzheimer’s disease was confirmed
with Mini-Mental State Examination (MMSE) ≥ 16 and ≤ 24 and a cerebrospinal fluid (CSF) T-tau/Aβ42 ratio ≥ 0.30. Safety
was assessed by ECGs, clinical labs, adverse event monitoring and physical examinations. CSF was drawn from patients before
dosing started and again after 28 continuous days of dosing with PTI-125. CSF samples were then analyzed for biomarkers of
Alzheimer’s pathology (T-tau, P-tau, Aβ42); neurodegeneration (NfL, neurogranin); and neuroinflammation (YKL-40, IL-6, IL-
1β and TNFα). A consulting biostatistician conducted an independent analysis of the data set.

A key objective of our Phase 2a study was to measure levels of biomarkers in the brain. Key results of this study include

(Figure 2): 

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Total tau (T-tau) decreased 20% (p<0.001)

Phosphorylated tau (P-tau) decreased 34% (p<0.0001)

Neurofilament light chain (NfL), a marker for neurodegeneration, decreased 22% (p<0.0001)

Neurogranin, a marker for cognitive decline, decreased 32% (p<0.0001)

Neuroinflammatory marker YKL-40, an indicator of microglial activation, decreased 9% (p<0.0001)

Proinflammatory Interleukin 6 (IL-6) decreased 14% (p<0.0001)

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·

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Proinflammatory Interleukin 1 beta (IL-1β) decreased 11% (p<0.0001)

Proinflammatory Tumor Necrosis Factor alpha (TNFα) decreased 5% (p<0.001)  

The ratio of CSF P-tau to Aβ42, a widely accepted biochemical value of Alzheimer’s disease, improved in all patients
(p<0.001)

Figure 2: PTI-125 treatment reduces levels of CSF biomarkers in patients with Alzheimer’s in a Phase 2a study.

Neurogranin* NfL*

T-tau+

P-tau181* YKL40*

IL-6*

IL-1β*

TNFα+

Figure  2.  Percent  change  from  baseline  in  CSF  biomarkers  measured  by  ELISA.  Eight  CSF  biomarkers  of  disease  in
Alzheimer’s patients were significantly reduced with PTI-125 treatment.  *p < 0.0001, +p < 0.001 in paired t test comparing
Day 28 to pre-dose baseline.

In addition, visual line plots, which are also known as spaghetti plots, of each individual patient and each individual
biomarker  measurement  show  that  all  patients  had  a  biomarker  response  to  treatment  with  PTI-125  in  our  Phase  2a  study
(Figure 3).

Figure 3. Individual patient response to treatment with PTI-125 in a Phase 2a study. CSF data are plotted as pg/mL.

9

 
 
 
 
 
 
 
 
 
Figure 3. Each spaghetti plot shows change from baseline to Day 28 for each patient and each biomarker.

Consistent  with  over  10  years  of  basic  research  and  pre-clinical  data,  we  believe  our  Phase  2a  study  showed  clinical

evidence of PTI-125’s mechanism of action and drug-target engagement, including:

·

Improvements in biomarkers of Alzheimer’s disease in CSF, plasma and lymphocytes;

· Consistency across biomarker improvements in CSF, plasma, and lymphocytes;

· Significant reductions (p<0.01) in both nitrated and phosphorylated forms of tau protein;

· Evidence that each individual patient showed biomarker responses to PTI-125;

· Evidence that PTI-125 reversed the shape of altered filamin A in lymphocytes;

· Evidence that PTI-125 reduced levels of amyloid bound to alpha 7 nicotinic receptors in lymphocytes;

· Early clinical validation of the drug target – altered filamin A – as a facilitator protein between amyloid beta and both

neuroinflammation and tau pathology.

To our knowledge, no competing drug candidate has demonstrated the ability to reduce an entire panel of biomarkers of
disease in patients with Alzheimer’s disease. For this reason, CSF biomarker data generated in our Phase 2a study may not be
directly comparable to clinical results generated by our competitors.

In December 2019, we presented data from our Phase 2a study at the 12th International Conference on Clinical Trials on
Alzheimer’s Disease (CTAD),  a  conference  for  the  medical  and  scientific  community  held  in  San  Diego,  CA.  Our  Phase  2a
presentation was selected as a “Late Breaking Oral Communication” by CTAD 2019. 

In  February  2020,  our  Phase  2a  study  was  published  in  The  Journal  of  Prevention  of  Alzheimer’s  Disease  (JPAD),  a

technical journal for the research community. This peer-reviewed publication highlighted that biomarkers of Alzheimer’s

10

 
 
disease pathology (P-tau, total tau and Aβ42), neurodegeneration (NfL and neurogranin) and neuroinflammation (YKL-40, IL-
6, IL-1β and TNFα) improved significantly after 28 days of treatment with PTI-125.

Cognition and function were not assessed in this small Phase 2a study. However, independent research has shown that high
levels of CSF biomarkers of P-tau and total tau/Aβ42 ratio correlate with worse performance on a wide range of memory and
attention tests. Conversely, lowering biomarkers of disease may benefit patients.

Phase 2b Clinical Study 
In  September  2019,  we  announced  initiation  of  a  Phase  2b  confirmatory  clinical  study  in  Alzheimer’s  patients,  with
funding provided by NIH. This Phase 2b clinical study is designed to evaluate safety, tolerability and drug effects of PTI-125
on  biomarkers  of  Alzheimer’s  disease.  This  is  a  blinded,  randomized,  placebo-controlled,  multi-center,  multi-dose  research
study  in  64  patients  with  mild-to-moderate  Alzheimer’s  disease.  Patients  received  PTI-125  100  mg,  50  mg,  or  matching
placebo, twice daily for 28 continuous days. The primary endpoint is improvement in biomarkers of Alzheimer’s disease from
baseline to Day 28.  

In January 2020, we announced the completion of patient enrollment for our Phase 2b study. In  February  2020,  the  last
study participants were successfully dosed. In March 2020, the last study participants underwent final, routine follow-ups. No
safety issues were found. Cerebrospinal fluid and plasma samples from study participants were then shipped to independent,
third party labs for biomarker analysis. Study samples will be analyzed under blinded conditions, meaning no one will know
whether  a  test  sample  came  from  a  study  participant  who  was  on  drug  or  placebo  until  the  study  is  unblinded.  Lab  testing,
statistical analysis, data analytics and interpretation of results are expected to run through approximately May 2020. We expect
to announce Phase 2b results approximately in approximately mid-2020.

Open-label Extension Clinical Study 
On  March  25,  2020,  we  announced  the  initiation  of  an  open-label  extension  study  to  evaluate  PTI-125  in  patients  with
Alzheimer’s disease. This open-label, multi-center, extension study will monitor the long-term safety and tolerability of PTI-
125 at 100 mg twice-daily for 12 months. The study’s target enrollment is approximately 100 patients with mild-to-moderate
Alzheimer’s  disease,  including  patients  from  prior  studies  of  PTI-125.  Study  sites  may  initially  slow  the  pace  of  patient
enrollment to minimize any risks of exposing elderly patients to infectious disease during office visits. 

Future Clinical Plans
The basis for rational drug development is to ask and answer important questions around safety, tolerability and efficacy.
The sequence of our smaller Phase 1 and Phase 2 studies are intended to generate preliminary conclusions around the safety
and tolerability of PTI-125 for its intended indication to treat Alzheimer’s disease. Following the conclusion of these smaller
studies, we may design and conduct a large-scale Phase 3 efficacy program of PTI-125 in Alzheimer’s disease in the future.
Our strategy would be to tailor a Phase 3 efficacy program to the strengths and prior clinical observations of PTI-125. 

In  early  2018,  FDA  released  a  draft  guidance  document  for  Alzheimer’s  drug  development.  While  helpful,  this  draft
guidance document does not provide a consensus opinion around the proper design of a Phase 3 efficacy program. In addition,
the  basic  requirement  to  show  a  drug-placebo  difference  on  a  cognitive  measure  and  a  global  or  functional  co-primary
measurement  appears  to  be  unchanged.  We  believe  our  clinical  efficacy  program  will  need  to  correlate  improvements  in
biomarkers with beneficial effects on cognition and or function in Alzheimer’s patients.

In  order  to  take  advantage  of  an  evolving  regulatory  landscape,  we  intend  to  design  and  conduct  a  Phase  3  efficacy
program in close collaboration with FDA and scientific, clinical and industry advisors. Any detailed consideration of our Phase
3  efficacy  program  is  predicated  on  such  collaboration.  However,  we  believe  current  regulatory  standards  around  the  design
and conduct of a Phase 3 study in Alzheimer’s disease may include the following baseline requirements:

·

Study design: randomized, placebo-controlled, double-blind, multi-center study;

· Objective: to assess the effects of PTI-125 on cognition, function and biomarkers;

·

·

Study size: 750 to 1,000 patients;

Patient population: mild to moderate Alzheimer’s disease, also including mild cognitively impaired;

11

 
 
·

·

·

Study duration: 18 to 24 months;

Primary endpoint: slower rate of decline over 18 months vs placebo on cognition and/or daily function; and

Co-primary endpoint: biomarkers of disease, hippocampal volume, others.

Large-scale Phase 3 efficacy programs in Alzheimer’s disease are complex and very expensive, with greater challenges in

planning, design, measurements methodology, implementation and analysis compared to smaller studies.

SavaDx is our investigational diagnostic to detect Alzheimer’s disease from a small sample of blood.

Our  diagnostic  effort,  called  SavaDx,  is  an  early-stage  program  focused  on  detecting  Alzheimer’s  disease  from  a  small
sample of blood, possibly years before the overt appearance of clinical symptoms. The goal of SavaDx, an early-stage product
candidate, is to make the detection of Alzheimer’s disease as simple as getting a blood test. We are developing SavaDx as a
fast, accurate and quantitative blood-based biomarker/diagnostic to detect and monitor Alzheimer's disease. If successful, we
believe SavaDx has potential to make obsolete more invasive approaches for diagnosing Alzheimer’s disease.

Over  the  past  ten  years,  we  discovered  that  altered  FLNA  is  a  hallmark  feature  of  brain  pathology  in  patients  with
Alzheimer’s disease. We believe SavaDx, which is a complex and unique detection system for altered filamin A (FLNA), can
reveal early traces of the disease, potentially even before the overt appearance of disease symptoms, such as memory loss. 

In September 2017, we announced a $1.8 million research grant award from the NIH for SavaDx. The NIH awarded us this
research  grant  following  a  confidential,  in-depth  evaluation  of  SavaDx  technology  for  scientific  and  technical  merit.  This
technical milestone-based grant award enables us to work collaboratively with leaders in the field to collect  clinical  samples
needed to develop our blood-based diagnostic for Alzheimer’s disease.   

A  diagnostic  test  usually  measures  one  or  more  biomarkers,  which  are  biological  indicators  of  disease.  A  deep
understanding of the biology of disease is required to identify and develop a diagnostic. A valid diagnostic has certain baseline
characteristics  to  be  functional  and  useful  for  clinical  practice.  It  must  detect  disease  in  patients  and,  conversely,  not  detect
disease in healthy subjects; and it is preferably quantitative, giving some indication of severity or stage of disease. Collectively,
the ability to selectively detect disease indicators can be useful to provide diagnostic information (i.e., detect the disease) or
prognostic information (i.e., predict the disease or its future course). 

Currently,  the  most  definitive  method  to  diagnose  Alzheimer’s  disease  is  through  autopsy  after  death,  which  is  not
particularly helpful. Methods to detect Alzheimer’s disease during its course can be  expensive,  invasive,  subjective,  risky  or
uncomfortable.  Importantly,  because  of  the  expense  and  invasiveness  of  current  tests, most  people  are  not  tested  until  they
show obvious cognitive decline. 

Current approaches for diagnosing Alzheimer’s disease include measurement of amyloid-β (specifically, Aβ42), total tau
(T-tau) or phosphorylated tau (P-tau) levels in CSF; structural neuroimaging techniques, including magnetic resonance imaging
(MRI)  or  computerized  tomography  (CT);  positron-emission  tomography  (PET)  imaging  of  brain  amyloid  (AmyVid®);  and
batteries of cognitive tests. Usually, a combination of more than one test is necessary to provide a working diagnosis. When
such tests and techniques are used together, the totality of data can be sensitive and specific for the detection of Alzheimer’s
disease. In practice, however, such tests and techniques are only used after overt symptoms of impaired memory. 

We  believe  there  is  a  profound  need  for  a  blood-based  diagnostic  test  for  Alzheimer’s  disease.  A  quick,  simple,
inexpensive  test  may  benefit  the  medical  community  in  many  ways.  Advantages  may  include  confirming  the  presence  of
Alzheimer’s disease earlier, when lifestyle changes and potential therapeutics may have the most impact, or conversely, to rule
out  Alzheimer’s  disease  at  such  early  stages.  Other  potential  benefits  include  discriminating  Alzheimer’s  disease  from  other
causes  of  dementias;  helping  to  identify  stage  of  Alzheimer’s  disease;  selection  and  enrollment  of  appropriate  patients  into
clinical  studies  of  experimental  product  candidates;  and  better  alignment  of  a  patient’s  specific  diagnosis  with  a  targeted
therapeutic. 

12

 
 
It  is  widely  accepted  that  in  Alzheimer’s  disease,  pathological  changes  in  the  brain  occur  at  least  10-15  years  before
clinical symptoms appear. These “pre-symptomatic” changes include deposits of certain misfolded or impaired proteins in the
brain.  Our  long-term  goal  with  SavaDx  is  to  identify  people  with  Alzheimer’s  disease,  potentially  long  before  clinical
symptoms occur. Early detection may be critical for any intervention to cease - or at least slow down - brain damage before it is
too  late.  Importantly,  a  non-invasive  screen  for  latent  Alzheimer’s  disease  prior  to  overt  symptoms  could  be  conducted  as  a
general health screen, not just in patients at risk by family history or in patients already showing cognitive impairment. Once a
disease-modifying treatment is found, early detection is likely to be critically important. Early detection and treatment may also
be  critical  in  identifying  such  a  disease-modifying  treatment,  as  many  believe  one  reason  for  clinical  study  failures  in
Alzheimer’s disease is that treatment has routinely started too late in the course of disease to make any impact.

Moreover,  with  repeat  measurements  over  time,  SavaDx  may  provide  a  probability  of  cognitive  decline  or  disease
progression. Even if SavaDx does not provide a precise numerical cutoff value for Alzheimer’s disease, we believe it may be
important  to  incorporate  data  from  SavaDx  into  the  overall  diagnostic  framework  for  neurodegeneration,  and  Alzheimer’s
disease in particular.  As  with  any  diagnosis  of  disease,  some  people  may  embrace  a  way  to  detect  Alzheimer’s  disease  long
before clinical symptoms appear, while others may prefer not to know – at least until a treatment is found.

Diagnostic development program for SavaDx.

Diagnostic  development  differs  from  drug  development  in  many  important  ways.  As  a  result,  diagnostic  development

requires substantial differences in planning, study design and study execution.

Some of the ways that diagnostic development differs from drug development include the following:

·

·

·

We  may  need  to  choose  among  a  wider  range  of  regulatory  pathways  for  approval  of  SavaDx,  depending  on  factors
such as intended use and user, test type and complexity and role in patient-care decisions;

Drug studies usually deal primarily with one office within FDA, but the regulatory pathway for SavaDx may require us
to consider the policies of multiple federal or state regulatory agencies and offices;

Unlike drug programs, statistical analysis with SavaDx does not focus on efficacy and safety endpoints. Rather, study
endpoints  for  SavaDx  will  focus  on  sensitivity  (true  positives),  specificity  (true  negatives),  positive  predictive  value
(percentage of correct positive diagnoses of known positive cases) and negative predictive value (percentage of correct
negative diagnoses of known negative cases);

SavaDx is an investigational diagnostic product candidate that has not yet been reviewed by FDA. Clinical testing consists
of collecting blood samples on a limited scale to validate SavaDx. Our ability to test such samples depends on multiple factors,
many of which are beyond our control. For example, optimal sample collection depends on risk of sample degradation, storage
requirements to preserve samples, cost of sample storage and actual vs. predicted time of assay validation.

Over the past three years, we have conducted four such rounds of early validation tests, with funding from NIH. In three
blinded  studies  of  test  samples,  SavaDx  detected  more  than  a  10-fold  separation  between  Alzheimer’s  patients  and  normal
healthy  control  subjects  (N=232  test  samples).  In  these  three  proof-of-concept  studies,  SavaDx  demonstrated  nearly  100%
accuracy and specificity. The three studies deployed a research grade antibody manufactured by an outside vendor. 

A fourth blinded study of SavaDx failed to generate meaningful diagnostic data. We believe the fourth study deployed a
faulty  research  antibody  sourced  from  an  outside  vendor.  Commercially  available  research  antibodies  can  present  certain
technical  flaws,  such  as  improper  validation,  significant  batch-to-batch  variations  or  inconsistent  storage,  any  of  which  can
jeopardize results of studies and experiments. For these reasons, and in order to increase consistency of quality, reliability and
availability, we are now developing and validating a proprietary, fit-for-purpose, antibody system for use with SavaDx. NIH is
funding the development expenses for this project. Such technical activities are on-going. Assuming technical success with on-
going efforts, we expect to run validation studies with SavaDx in the second half of 2020.

The legal system for intellectual property around diagnostic methods is highly complex and uncertain. In the U.S., patent
courts  have  struggled  to  define  a  clear  means  of  patent  eligibility  for  modern  age  diagnostics.  Generally,  a  simple  process
involving  correlations  between  blood  test  results  and  patient  health  is  not  eligible  for  patent  claims  because  such  processes
incorporate “laws of nature”. However, different outcomes from different courts, including Federal Circuit, district court and

13

 
 
Patent  Trial  and  Appeal  Board  decisions,  have  continued  to  create  a  sometimes  vague  or  conflicting  legal  framework  for
determining the eligibility of patent claims for diagnostic methods. As a result, we cannot be certain how SavaDx fits into the
current  U.S.  legal  framework  for  obtaining  effective  patent  claims.  Furthermore,  claims  for  diagnostic  methods  can  be
complicated to enforce.

Expansion of our science to other indications.

It is well-known that protein misfolds occur in a wide variety of biological processes and diseases. We may leverage our
scientific insights in neurodegeneration and advanced tools in biochemistry, bioinformatics and imaging to expand our science
to other diseases. New indications and new drug development approaches may complement our initial focus on Alzheimer’s
disease. 

Pre-clinical  programs  are  always  visionary,  sometimes  innovative  and  often  of  high  biomedical  potential.  However,  by
definition such programs are exploratory and risky. Moreover, most pre-clinical programs fail for scientific or other reasons,
regardless of the amount of effort or resources that are brought to bear upon such programs. For these reasons, in general we do
not intend to disclose our pre-clinical programs until such time as they become material to our pipeline of product candidates.

We own worldwide rights to our neurodegeneration program.

We own intellectual property, including patents, patent applications, technology, trade secrets and know-how in the U.S.
and other countries. The protection of patents, designs, trademarks and other proprietary rights that we own or license is critical
to our success and competitive position. We consider the overall protection of our patents and other intellectual property rights
to be of material value and act to protect these rights from infringement.

We seek to protect our technology by, among other methods, filing and prosecuting U.S. and foreign patents and patent
applications  with  respect  to  our  technology  and  products  and  their  uses.  The  focus  of  our  patent  strategy  is  to  secure  and
maintain intellectual property rights to technology for our program in neurodegeneration.

PTI-125 and SavaDx were both discovered and designed in-house and were characterized by our academic collaborators
during research activities that were conducted from approximately 2008 to date. We own exclusive, worldwide rights to these
drug assets and related technologies, without royalty obligations to any third party. Our patent protection in this area currently
runs through 2034, plus extensions, and includes six issued patents and related patent filings and applications.

Our Development Team

Our product development team is led by seasoned professionals with a proven track record of innovation in drug discovery

and development, as well as substantial business expertise.

Our Founder and Chief Executive Officer, Remi Barbier, has over 25 years of biopharmaceutical industry experience and
has  led  teams  responsible  for  pioneering  several  pharmaceutical  innovations,  including  abuse-deterrent  drugs;  the  clinical
development of multiple pain drugs; an innovative antibody program in cancer; and other programs in neuroscience and other
therapeutics areas. Before founding Cassava Sciences (formerly known as Pain Therapeutics, Inc.), he held leadership roles and
was founder or co-founder of four life science companies, three of which are now publicly traded. Our Chief Medical Officer,
Nadav Friedmann PhD, MD, has eight prior FDA drug approvals and previously served as CEO of Daiichi Pharmaceuticals
USA and Head of Johnson & Johnson’s Biotechnology Research Center. Lindsay Burns, PhD, SVP, Neuroscience, worked on
the development of several product candidates in neuroscience and other therapeutics areas while at Neurex (acquired by Elan
Pharmaceuticals) and Abgenix (acquired by Amgen). Michael Zamloot, SVP of Technology Operations, has four prior  FDA
drug approvals and has worked in drug operations and supply chain management at Boehringer Mannheim (acquired by Roche
Diagnostics), Athena Neuroscience (acquired by Elan Pharmaceuticals) and Ciba-Geigy (acquired by Novartis). George (Ben)
Thornton, PhD, SVP of Technology, has led research and development teams at Johnson & Johnson as well as translated basic
science to the clinical setting at biotechnology start-ups such as GeneMedicine and Apovia.

Our management team is further supported by scientific advisors that share our commitment to advancing new treatments

for Alzheimer’s disease. Leading experts in the field who advise us include:

14

 
 
·

·

·

·

·

Jeff  Cummings,  MD,  Director  of  Cleveland  Clinic  Lou  Ruvo  Center  for  Brain  Health  and  Professor  of
Neurotherapeutics and Drug Development, Cleveland Clinic. 

Hoau-Yan Wang, PhD, Tenured Medical Professor at CUNY Medical School; co-lead scientist on discovery
& development of PTI-125 and SavaDx.

Steven  E.  Arnold,  MD,  Translational  Neurology  Head  of  the  Interdisciplinary  Brain  Center,  Massachusetts
General Hospital, Harvard Medical School.  

Barbara Sahakian, FBA, FMedSci, Professor  of  Clinical  Neuropsychology  at  the  Department  of  Psychiatry
and Medical Research Council /Wellcome Trust Behavioral and Clinical Neuroscience Institute, University of
Cambridge.

Trevor W. Robbins, CBE FRS FMedSci, Professor of Cognitive Neuroscience at the University of Cambridge
and Past President of the British Neuroscience Association.

Our Strategy

Our  goal  is  to  develop  product  candidates  to  diagnose  and  treat  neurodegeneration,  such  as  Alzheimer’s  disease.  Key

elements of our business strategy to achieve this mission include:

·

·

·

·

·

building  a  lean  company  that  is  narrowly  focused  on  developing  innovative  product  candidates  for
Alzheimer’s disease and other areas of neurodegeneration;

validating our unique scientific approach with competitive research grants and publishing our scientific data
in peer-reviewed journals;

applying  our  development  capabilities  to  advance  our  product  candidates  through  clinical  proof-of-concept
studies and beyond;

using  our  expertise  and  experience  to  continue  to  focus  on  discovering  new  indications  and  product
candidates, validated by experimental evidence and leading experts in the field; and

continuing to outsource preclinical studies, clinical studies and formulation development activities in order to
allow more efficient deployment of our resources

We  also  conduct  basic  research  and  development  in  collaboration  with  academic  and  other  partners.  Our  research  and
development expenses were $1.6 million and $3.0 million for the year ended December 31, 2019 and 2018, respectively. These
amounts  are  net  of  significant  reimbursement  received  from  NIH.  See  “Item  7  Management’s  Discussion  and  Analysis  of
Financial Condition and Results of Operations” for additional details regarding our research and development activities.

Competition

The drug discovery and development industry is characterized by rapidly advancing technologies, intense competition and
a  strong  emphasis  on  proprietary  products.  We  face  potential  competition  from  many  different  sources,  including
pharmaceutical and biotechnology companies, academic institutions and governmental agencies and public and private research
institutions.  Any  product  candidates  that  we  successfully  develop  and  commercialize,  such  as  PTI-125  or  SavaDx,  may
compete with existing therapies and new therapies that may become available in the future.

Historically, the drug industry has attempted to treat Alzheimer’s disease by developing drugs that block the synthesis of,
or remove or dis-aggregate, beta amyloid and, more recently another protein in the brain called tau. Essentially, the prevailing
doctrine says amyloid must be cleared out of the brain. This scientific approach – known as the amyloid hypothesis - has been
repeatedly  tested  by  our  competitors  in  late  stage  clinical  studies  using  a  variety  of  antibody  backbones,  epitopes,  target
conformations, biomarkers and in various stages of disease. While this approach may yet work, to date the amyloid hypothesis
has failed to generate unambiguous therapeutic benefit in patients with Alzheimer’s disease. More recent competitors in

15

 
 
Alzheimer’s  research  are  focused  on  modulating  proteins  in  the  brain  that  have  anti-inflammatory  or  other  properties,  an
approach known as immunotherapy.

In  contrast,  our  scientific  approach  seeks  to  simultaneously  improve  neurodegeneration  and  neuroinflammation.  We
believe improving multiple vital functions in the brain represents a new, different and crucial approach to address Alzheimer’s
disease.

Regardless of scientific approach, improvements in cognition and function remains a key criterion for FDA approval of a

new drug in Alzheimer’s disease, a hurdle which, to date, no drug candidate has met with clear and compelling clinical data.

Our  competitors  may  have  significantly  greater  financial  resources,  an  established  presence  in  the  market,  expertise  in
research and development,  manufacturing,  preclinical  and  clinical  testing,  obtaining  regulatory  approvals  and  reimbursement
and marketing-approved products. These competitors also compete with us in recruiting and retaining qualified scientific and
technical  personnel,  establishing  clinical  study  sites  and  patient  registration  for  clinical  studies,  as  well  as  in  acquiring  or
developing technologies complementary to, or necessary for, our programs. Smaller or early-stage companies may also prove to
be significant competitors, particularly through collaborative arrangements with large and established companies.

The key competitive factors affecting the success of PTI-125, and any other product candidates that we develop to address
neurodegenerative  disorders,  if  approved,  are  likely  to  be  their  efficacy,  safety,  convenience,  price,  the  level  of  generic
competition,  patient  and  physician  acceptance  and  the  availability  of  reimbursement  from  government  and  other  third-party
payors. Our commercial opportunity could be reduced  or  eliminated  if  our  competitors  develop  and  commercialize  products
that are more effective, have fewer or less severe side effects, are more convenient or are less expensive than any products that
we may develop.

Our competitors also may obtain FDA approval for their products more rapidly than we may obtain approval for ours. For
example, we are aware that Biogen, Inc., a large biopharmaceutical company, has announced their intention to seek regulatory
approval in the U.S. for aducanumab in 2020. Aducanumab is a proprietary investigational drug candidate (human monoclonal
antibody)  that  has  been  intensely  studied  for  the  treatment  of  Alzheimer’s  disease.  The  safety  and  efficacy  data  with
aducanumab  are  complex  and  subject  to  debate.  However,  aducanumab  may  become  the  first  therapy  since  2003  to  receive
FDA approval in patients with Alzheimer’s disease.

In recent years, we have observed ramped-up worldwide efforts aimed at developing blood-based techniques to detect and
monitor Alzheimer’s disease. The key competitive factors affecting the success of SavaDx, and any other product candidates
that we develop to diagnose neurodegeneration, if approved, are likely to be their measure of accuracy, such as specificity and
sensitivity, as well as their convenience, patient acceptance, price and the availability of reimbursement from government and
other  third-party  payors.  Our  competitors  in  the  diagnostic  area  are  pharmaceutical  and  biotechnology  companies,  academic
institutions and governmental agencies and public and private research institutions. Despite increased research effort, the field
has generally been hampered by lack of reproducibility and an unclear path on how to move academic discoveries into clinical
utilization.

In addition to blood-based techniques to detect Alzheimer’s disease, competitors are examining the use of novel tracing
agents  and  imaging  techniques  to  map  the  course  of  neurodegeneration.  In  2012  the  FDA  approved  Amyvid®  (Eli  Lilly
Pharmaceuticals),  which  is  a  radioactive  diagnostic  agent  for  brain  imaging  of  amyloid  plaque.  Amyvid  can  rule  out
Alzheimer’s disease but does not confirm its presence. That is, a negative scan means little or no plaque is present; however, a
positive  scan  does  not  necessarily  indicate  Alzheimer’s  disease.  In  addition,  Amyvid  cannot  be  used  to  stage  Alzheimer’s
disease  because  some  people  take  years  to  show  cognitive  decline  after  amyloid  plaque  develops,  while  other  others  rapidly
develop advanced Alzheimer’s disease within months. Since its approval in 2012, Amyvid has had modest clinical utilization
due to its high cost, lack of widespread reimbursement and need for specialized training. 

Manufacturing

We  do  not  own  or  lease  any  manufacturing  facilities.  We  outsource  formulation,  manufacturing  and  related  activities  to
third  parties.  For  the  foreseeable  future,  we  will  continue  to  rely  on  third  parties  to  conduct  certain  quality  control  and
assurance testing, shipping or storage of our product candidates.

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We  currently  rely  on  contract  development  and  manufacturing  organizations  (CDMOs)  for  the  manufacture  of  all  our
materials  for  preclinical  and  clinical  studies  and  expect  to  continue  to  do  so,  and  for  commercial  supply  of  any  product
candidates that we may develop. We currently have established relationships with several CDMOs for the manufacturing of our
product candidates.

Our suppliers must comply with current good manufacturing practices (cGMP) enforced by the FDA and other government
agencies. Our suppliers are subject to unannounced inspection by regulators, including pre-approval inspections by the FDA, to
ensure they are in strict compliance with government regulations and standards. Our suppliers may be forced to stop producing,
storing, shipping or testing our drug products if they fall out of compliance with government regulations and standards.

We have no control over our suppliers’ compliance, or lack thereof, with the multitude of regulations and standards that
affect  our  drug products.  We  cannot  control  decisions  by  our  suppliers  that  affect  their  ability  or  willingness  to  continue  to
supply us on acceptable terms, or at all. 

Strategic Shift Away from Analgesic Drug Development

Historically, our focus had been on analgesic drug development. During that time, we conceived, formulated, developed,
tested and patented various analgesic drug candidates. In late 2018, we announced a strategic shift away from analgesic drug
development. On March 20, 2019, we gave a prior collaborator, Durect Corporation, written notice of termination of a licensing
agreement  for  analgesic  drugs.  This  action  effectively  ended  our  involvement  with  analgesic  drug  development.    In  March
2019,  we  announced  that  going  forward  we  would  focus  exclusively  on  our  on-going  program  in  neurodegeneration.  On  or
around that time, we also announced our new company name, logo, NASDAQ ticker symbol and website.

Government Regulation

Government authorities in the U.S. at the federal, state and local level and in other countries regulate, among other things,
the  research,  development,  testing,  manufacture,  quality  control,  approval,  labeling,  packaging,  storage,  record-keeping,
promotion,  advertising,  distribution,  post-approval  monitoring  and  reporting,  marketing  and  export  and  import  of  drug  and
diagnostic products. Generally, before a new drug or diagnostic can be marketed, considerable data demonstrating its quality,
safety and efficacy and/or specificity must be obtained, organized into a format specific for each regulatory authority, submitted
for review and approved by the regulatory authority.

U.S. Drug Development

In the U.S., the FDA regulates drugs under the Food, Drug, and Cosmetic Act (FDCA). Both drugs and diagnostics also
are  subject  to  other  federal,  state  and  local  statutes  and  regulations.  The  process  of  obtaining  regulatory  approvals  and  the
subsequent  compliance  with  appropriate  federal,  state,  local  and  foreign  statutes  and  regulations  requires  the  expenditure  of
substantial time and financial resources. Failure to comply with the applicable U.S. requirements at any time during the product
development process, approval process or post-market may subject an applicant to administrative or judicial sanctions. These
sanctions could include, among other actions, the FDA’s refusal to approve pending applications, withdrawal of an approval, a
clinical hold, untitled or warning letters, product recalls or market withdrawals, product seizures, total or partial suspension of
production or distribution, injunctions, fines, refusals of government contracts, restitution, disgorgement and civil or criminal
penalties. Any agency or judicial enforcement action could have a material adverse effect on us.

Product  candidates  must  be  approved  by  the  FDA  before  they  may  be  commercialized  in  the  U.S.  The  drug  approval

process generally involves the following:

·

·

·

Completion  of  extensive  preclinical  studies  in  accordance  with  applicable  regulations,  including  studies
conducted in accordance with good laboratory practice;

Submission to the FDA of an IND, which must become effective before human clinical studies may begin;

Approval by an independent institutional review board (IRB) or ethics committee before each study may be
initiated;

17

 
 
 
·

·

·

·

·

·

·

Performance  of  adequate  and  well-controlled  human  clinical  studies  in  accordance  with  applicable  IND
regulations, code of good clinical practice (cGCP), requirements and other clinical trial-related regulations to
establish the safety and efficacy of the investigational product for each proposed indication;

Submission to the FDA of an NDA;

A determination by the FDA within 60 days of its receipt of an NDA to accept the filing for review;

Satisfactory completion of an FDA pre-approval inspection of the manufacturing facility or facilities where
the drug will be produced to assess compliance with cGMP, requirements to assure that the facilities, methods
and controls are adequate to preserve the drug’s identity, strength, quality and purity;

Potential FDA audit of the preclinical study and/or clinical study sites that generated the data in support of the
NDA;

FDA review and approval of the NDA, including consideration of the views of any FDA advisory committee,
prior to any commercial marketing or sale of the drug in the U.S.; and 

Compliance  with  any  post-approval  requirements,  including  the  potential  requirement  to  conduct  post-
approval studies.

The  data  required  to  support  an  NDA  are  generated  in  two  distinct  developmental  stages:  preclinical  and  clinical.  The
preclinical and clinical testing and approval process requires substantial time, effort and financial resources, and we cannot be
certain that any approvals for any future product candidates will be granted on a timely basis, or at all.

Preclinical Studies and IND

The preclinical developmental stage generally involves laboratory evaluations of drug chemistry, formulation and stability,
as well as studies to evaluate toxicity in animals, which support subsequent clinical testing. As sponsor, we must submit the
results  of  the  preclinical  studies,  together  with  manufacturing  information,  analytical  data,  any  available  clinical  data  or
literature and a proposed clinical protocol, to the FDA as part of the IND. An IND is a request for authorization from the FDA
to administer an investigational product to humans and must become effective before human clinical studies may begin.

Preclinical  studies  include  laboratory  evaluation  of  product  chemistry  and  formulation,  as  well  as  in  vitro  and  animal
studies to assess the potential for adverse events and in some cases to establish a rationale for therapeutic use. The conduct of
preclinical studies is subject to federal regulations and requirements, including cGCP regulations for safety/toxicology studies.
An IND sponsor must submit the results of the preclinical tests, together with manufacturing information, analytical data, any
available clinical data or literature and plans for clinical studies, among other things, to the FDA as part of an IND. Some long-
term preclinical testing, such as long-term toxicity tests, animal tests of reproductive adverse events and carcinogenicity, may
continue after the IND is submitted. An IND automatically becomes effective 30 days after receipt by the FDA, unless before
that time the FDA raises concerns or questions about any aspect of the program. In such a case, the IND sponsor and the FDA
must resolve any outstanding concerns before the clinical study can begin.

Clinical Studies

The  clinical  stage  of  development  involves  the  administration  of  the  investigational  product  to  healthy  volunteers  or
patients  under  the  supervision  of  qualified  investigators,  generally  physicians  not  employed  by  or  under  the  study  sponsor’s
control, in accordance with cGCP requirements, which include the requirement that all research subjects provide their informed
consent for their participation in any clinical trial. Clinical studies are conducted under protocols detailing, among other things,
the objectives of the clinical trial, dosing procedures, subject selection and exclusion criteria and the parameters to be used to
monitor subject safety and assess efficacy. Each protocol, and any subsequent amendments to the protocol, must be submitted
to the FDA as part of the IND. Furthermore, each clinical study must be reviewed and approved by an IRB for each institution
at  which  the  clinical  study  will  be  conducted  to  ensure  that  the  risks  to  individuals  participating  in  the  clinical  studies  are
minimized and are reasonable in relation to anticipated benefits. The IRB also approves the informed consent form that must be
provided to each clinical study subject or his or her legal representative and must monitor the clinical study until

18

 
 
completed. There also are requirements governing the reporting of ongoing clinical studies and completed clinical study results
to public registries.

A    sponsor  who  wishes  to  conduct  a  clinical  study  outside  of  the  U.S.  may,  but  need  not,  obtain  FDA  authorization  to
conduct the clinical study under an IND. If a foreign clinical study is not conducted under an IND, the sponsor may submit data
from the clinical study to the FDA in support of an NDA. The FDA may accept a well-designed and well-conducted foreign
clinical study not conducted under an IND if the study was conducted in accordance with cGCP requirements and the FDA is
able  to  validate  the  data  through  an  onsite  inspection  if  deemed  necessary.  In  2019  we  did  not  conduct  any  clinical  studies
outside of the U.S. but we may do so in the future.

Clinical studies in the U.S. generally are conducted in three sequential phases, known as Phase 1, Phase 2 and Phase 3, and

may overlap.

·

·

·

Phase 1 clinical studies generally involve a small number of healthy volunteers or disease-affected patients
who  are  initially  exposed  to  a  single  dose  and  then  multiple  doses  of  the  product  candidate.  The  primary
purpose of these clinical studies is to assess the metabolism, pharmacologic action, tolerability and safety of a
drug candidate.

Phase 2 clinical studies involve studies in disease-affected patients to determine the proper dose required to
produce  the  desired  benefits.  At  the  same  time,  safety  and  further  pharmacokinetic  and  pharmacodynamic
information is collected, possible adverse effects and safety risks are identified, and a preliminary evaluation
of efficacy may be observed.

Phase 3 clinical studies generally involve many patients at multiple sites and are designed to provide the data
necessary to demonstrate the effectiveness of the product for its intended use, its safety in use and to establish
the overall benefit/risk relationship of the product and provide an adequate basis for product approval. These
studies may include comparisons with placebo and/or other comparator treatments. The duration of treatment
is often extended to mimic the actual use of a product during marketing.

Post-approval studies, sometimes referred to as Phase 4 clinical studies, may be conducted after initial marketing approval.
These studies are used to gain additional experience from the treatment of patients in the intended therapeutic indication. In
certain instances, the FDA may mandate the performance of Phase 4 clinical studies as a condition of approval of an NDA.

Progress reports detailing the results of the clinical studies, among other information, must be submitted at least annually
to  the  FDA.  Written  safety  reports  and  the  investigators  for  serious  and  unexpected  adverse  events,  or  any  other  findings
suggesting a significant risk to humans exposed to the drug must be submitted to the FDA. 

Phase 1, Phase 2, and Phase 3 clinical studies may not be completed successfully within any specified period, if at all. The
FDA  or  the  sponsor  may  suspend  or  terminate  a  clinical  study  at  any  time  on  various  grounds,  including  a  finding  that  the
research  subjects  or  patients  are  being  exposed  to  an  unacceptable  health  risk.  Similarly,  an  IRB  can  suspend  or  terminate
approval  of  a  clinical  study  at  its  institution  if  the  clinical  study  is  not  being  conducted  in  accordance  with  the  IRB’s
requirements or if the drug has been associated with unexpected serious harm to patients. Additionally, some clinical studies are
overseen  by  an  independent  group  of  qualified  experts  organized  by  the  clinical  study  sponsor,  known  as  a  data  safety
monitoring board or committee. This group provides authorization for whether a study may move forward at designated check-
points based on access to certain data from the trial. Concurrent with clinical studies, companies usually complete additional
animal studies and must develop additional information about the chemistry and physical characteristics of the drug as well as
finalize  a  process  for  manufacturing  the  product  in  commercial  quantities  in  accordance  with  cGMP  requirements.  The
manufacturing  process  must  be  capable  of  consistently  producing  quality  batches  of  the  product  and,  among  other  things,
companies  must  develop  methods  for  testing  the  identity,  strength,  quality  and  purity  of  the  final  product.  Additionally,
appropriate  packaging  must  be  selected  and  tested,  and  stability  studies  must  be  conducted  to  demonstrate  that  our  product
candidates do not undergo unacceptable deterioration over their shelf life.

19

 
 
 
NDA Review Process

Following  completion  of  the  clinical  studies,  data  is  analyzed  to  assess  whether  the  investigational  product  is  safe  and
effective for the proposed indicated use or uses. The results of preclinical studies and clinical studies are then submitted to the
FDA as part of an NDA, along with proposed labeling, chemistry and manufacturing information to ensure product quality and
other relevant data. In short, the NDA is a request for approval to market a drug for one or more specified indication and must
contain proof of safety and efficacy for a drug’s purity and potency. The application may include both negative and ambiguous
results of preclinical studies and clinical studies, as well as positive findings. Data may come from company-sponsored clinical
studies intended to test the safety and efficacy of a product’s use or from several alternative sources, including studies initiated
by investigators. To support marketing approval, the data submitted must be sufficient in quality and quantity to establish the
safety and efficacy of the investigational product to the satisfaction of FDA. FDA approval of an NDA must be obtained before
a drug may be marketed in the U.S. 

Under the Prescription Drug User Fee Act (PDUFA), as amended, each NDA must be accompanied by a user fee. FDA
adjusts  the  PDUFA  user  fees  on  an  annual  basis.  According  to  the  FDA’s  fiscal  year  2020  fee  schedule,  effective  through
September 30, 2020, the user fee for an application requiring clinical data, such as an NDA, is approximately $2.9 million. Fee
waivers or reductions are available in certain circumstances, including a waiver of the application fee for the first application
filed by a small business. Additionally, no user fees are assessed on NDAs for products designated as orphan drugs, unless the
product also includes a non-orphan indication.

The FDA reviews all submitted NDAs before it accepts them for filing and may request additional information rather than
accept  the  NDA  for  filing.  The  FDA  must  decide  on  accepting  an  NDA  for  filing  within  60  days  of  receipt.  Once  the
submission is accepted for filing, the FDA begins an in-depth review of the NDA. Under the goals and policies agreed to by the
FDA under PDUFA, the FDA has 10 months, from the filing date, in which to complete its initial review of a new molecular-
entity NDA and respond to the applicant, and six months from the filing date of a new molecular-entity NDA designated for
priority review. The FDA does not always meet its PDUFA goal dates for standard and priority NDAs, and the review process
is often extended by FDA requests for additional information or clarification.

Before  approving  an  NDA,  the  FDA  may  conduct  a  pre-approval  inspection  of  the  manufacturing  facilities  for  the  new
product  to  determine  whether  they  comply  with  cGMP  requirements.  The  FDA  will  not  approve  the  product  unless  it
determines that the manufacturing processes and facilities fully comply with cGMP requirements and are adequate to assure
consistent production of the product within required specifications. The FDA also may audit data from clinical studies to ensure
compliance with cGCP requirements. Additionally, the FDA may refer applications for novel product candidates which present
difficult questions of safety or efficacy to an advisory committee, typically a panel that includes clinicians and other experts, for
review, evaluation and a recommendation as to whether the application should be approved and under what conditions, if any.
The FDA is not bound by recommendations of an advisory committee, but it considers such recommendations when making
decisions  on  approval.  The  FDA  likely  will  reanalyze  the  clinical  study  data,  which  could  result  in  extensive  discussions
between the FDA and the applicant during the review process. After the FDA evaluates an NDA, it will issue either an approval
letter  or  a  Complete  Response  Letter  (CRL).  An  approval  letter  authorizes  commercial  marketing  of  the  drug  with  specific
prescribing information for specific indications. A CRL indicates that the FDA’s review of the application is complete and the
application cannot be approved in its present form. A CRL usually describes the specific deficiencies in the NDA identified by
the FDA. The CRL may require additional clinical data, additional pivotal Phase 3 clinical trial(s) and/or other significant and
time-consuming requirements related to clinical studies, preclinical studies or manufacturing. If a CRL is issued, the applicant
may either resubmit the NDA, addressing all the deficiencies identified in the CRL, or withdraw the application. Even if such
data and information are submitted, the FDA may decide that the NDA does not satisfy the criteria for approval. Data obtained
from clinical studies are not always conclusive and the FDA may interpret data differently than we interpret the same data.

Advertising and Promotion 

The  FDA  and  other  federal  regulatory  agencies  closely  regulate  the  marketing  and  promotion  of  drugs  through,  among
other  things,  standards  and  regulations  for  direct‑to‑consumer  advertising,  communications  regarding  unapproved  uses,
industry‑sponsored scientific and educational activities, and promotional activities involving the Internet. None of our product
candidates can be commercially promoted before receiving FDA approval. After approval, product promotion can include only
those  claims  relating  to  safety  and  effectiveness  that  are  consistent  with  the  labeling  approved  by  the  FDA.  Healthcare
providers are permitted to prescribe drugs for “off‑label” uses — that is, uses not approved by the FDA and therefore not

20

 
 
described  in  the  drug’s  labeling  —  because  the  FDA  does  not  regulate  the  practice  of  medicine.  However,  FDA  regulations
impose  stringent  restrictions  on  manufacturers’  communications  regarding  off‑label  uses.  Failure  to  comply  with  applicable
FDA requirements and restrictions in this area may subject us to adverse publicity and enforcement action by the FDA, the U.S.
Department of Justice, or the Office of the Inspector General of Health and Human Services, as well as state authorities. This
could subject us to a range of penalties that could have a significant commercial impact, including civil and criminal fines and
agreements that materially restrict the manner in which we promote or distribute our product candidates.

Post‑Approval Requirements

After  a  product  candidate  receives  regulatory  approval,  it  is  often  subject  to  pervasive  and  continuing  regulation  by  the
FDA, including, among other things, requirements relating to drug listing and registration, recordkeeping, periodic reporting,
product sampling and distribution, adverse event reporting and advertising, marketing and promotion restrictions.

Adverse event reporting and submission of periodic reports is required following FDA approval of an NDA. The FDA also
may require post‑market testing, known as Phase 4 testing, or the FDA may place conditions on an approval that could restrict
the distribution or use of the product. In addition, quality control, drug manufacture, packaging, and labeling procedures must
continue to conform to cGMP after approval. Drug manufacturers and certain of their subcontractors are required to register
their establishments with the FDA and certain state agencies. Registration may result in periodic announced or unannounced
inspections by the FDA or these state agencies, during which the agency inspects manufacturing facilities to assess compliance
with cGMP. Accordingly, manufacturers must continue to expend time, money, and effort in the areas of production and quality
control to maintain compliance with cGMP. Regulatory authorities may withdraw product approvals or request product recalls
if a company fails to comply with regulatory standards, if it encounters problems following initial marketing, or if previously
unrecognized problems are subsequently discovered. In addition, other regulatory actions may be taken, including, among other
things, warning letters, the seizure of products, injunctions, consent decrees placing significant restrictions on or suspending
manufacturing operations, refusal to approve pending applications or supplements to approved applications, civil penalties, and
criminal prosecution.

The FDA may require post‑approval clinical studies to help assure continued safety or effectiveness of the approved drug.
The FDA may also require a labeling change if it becomes aware of new safety information that it believes should be included
in the labeling of a drug.

The Hatch‑Waxman Amendments 

Orange Book Listing 

In  seeking  approval  for  our  product  candidates  through  an  NDA,  we  will  be  required  to  list  with  the  FDA  each  patent
whose claims cover the drug product. Upon receiving regulatory approval, each of the patents listed in the application for this
drug is then published in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as
the  “Orange  Book”.  Drugs  listed  in  the  Orange  Book  can,  in  turn,  be  cited  by  potential  generic  competitors  in  support  of
approval  of  an  abbreviated  NDA,  or  ANDA.  An  ANDA  provides  for  marketing  of  a  drug  product  that  has  the  same  active
ingredient in the same strengths and dosage form as the listed drug and has been shown through bioequivalence testing to be
therapeutically equivalent to the listed drug. Other than the requirement for bioequivalence testing, ANDA applicants are not
required to conduct, or submit results of, preclinical or clinical tests to prove the safety or efficacy of their drug product. Drugs
approved  in  this  way  are  commonly  referred  to  as  “generic  equivalents”  to  the  listed  drug,  and  can  often  be  substituted  by
pharmacists under prescriptions written for the original listed drug.

The ANDA applicant is required to make certain certifications to the FDA concerning any patents listed for the approved
product in the FDA’s Orange Book. Specifically, the applicant must certify that: (i) the required patent information has not been
filed; (ii) the listed patent has expired; (iii) the listed patent has not expired but will expire on a particular date and approval is
sought  after  patent  expiration;  or  (iv)  the  listed  patent  is  invalid  or  will  not  be  infringed  by  the  new  product.  The  ANDA
applicant may also elect to submit a section viii statement certifying that its proposed ANDA label does not contain (or carves
out)  any  language  regarding  the  patented  method‑of‑use  rather  than  make  certifications  concerning  a  listed  method‑of‑use
patent.  If  the  applicant  does  not  challenge  the  listed  patents,  the  ANDA  application  will  not  be  approved  until  all  the  listed
patents claiming the referenced product have expired.

21

 
 
A certification that the new product will not infringe the already approved product’s listed patents, or that such patents are
invalid, is called a Paragraph IV certification. If the ANDA applicant has provided a Paragraph IV certification to the FDA, the
applicant  must  also  send  notice  of  the  Paragraph  IV  certification  to  the  NDA  and  patent  holders  once  the  ANDA  has  been
accepted for filing by the FDA. The NDA and patent holders may then initiate a patent infringement lawsuit in response to the
notice  of  the  Paragraph  IV  certification.  The  filing  of  a  patent  infringement  lawsuit  within  45  days  of  the  receipt  of  a
Paragraph IV certification automatically prevents the FDA from approving the ANDA until the earlier of 30 months, expiration
of the patent, settlement of the lawsuit, or a decision in the infringement case that is favorable to the ANDA applicant. The
ANDA  application  also  will  not  be  approved  until  any  applicable  non‑patent  exclusivity  listed  in  the  Orange  Book  for  the
referenced product has expired.

Exclusivity 

Upon  NDA  approval  of  a  new  chemical  entity,  or  NCE,  which  is  a  drug  that  contains  no  active  moiety  that  has  been
approved by the FDA in any other NDA, that drug receives five years of marketing exclusivity during which the FDA cannot
receive any ANDA seeking approval of a generic version of that drug or any Section 505(b)(2) NDA that relies on the FDA’s
findings regarding that drug. A drug may obtain a three‑year period of exclusivity for a change to the drug, such as the addition
of  a  new  indication  to  the  labeling  or  a  new  formulation,  during  which  the  FDA  cannot  approve  an  ANDA  or  any
Section 505(b)(2) NDA, if the supplement includes reports of new clinical studies (other than bioavailability clinical studies)
essential to the approval of the supplement.

An ANDA may be submitted one year before NCE exclusivity expires if a Paragraph IV certification is filed. If there is no
listed patent in the Orange Book, there may not be a Paragraph IV certification, and, thus, no ANDA may be filed before the
expiration of the exclusivity period.

Disclosure of Clinical Study Information 

Sponsors  of  clinical  studies  of  FDA‑regulated  products,  including  drugs,  are  required  to  register  and  disclose  certain
clinical study information. Information related to the product, patient population, phase of investigation, clinical study sites and
investigators, and other aspects of the clinical study is then made public as part of the registration. Sponsors are also obligated
to  post  certain  information  regarding  the  results  of  their  clinical  studies  after  completion.  Disclosure  of  the  results  of  these
studies  can  be  delayed  until  the  new  product  or  new  indication  being  studied  has  been  approved.  Competitors  may  use  this
publicly available information to gain knowledge regarding the progress of development programs.

Other Regulatory Requirements

We may be subject to federal, state and local environmental laws and regulations, including the Environmental Protection
Act and the Clean Air Act. Although we believe that our safety procedures for handling and disposing of controlled materials
comply with the standards prescribed by state and federal regulations, accidental contamination or injury from these materials
may occur. In the event of such an occurrence, we could be held liable for any damages that result and any such liability could
exceed our resources.

We  may  also  be  subject  to  regulations  under  other  federal,  state,  and  local  laws,  including  the  Occupational  Safety  and
Health  Act,  national  restrictions  on  technology  transfer,  and  import,  export,  and  customs  regulations.  It  is  possible  that  any
portion of the regulatory framework under which we operate may change and that such change could have a negative impact on
our  current  and  anticipated  operations.  Failure  to  comply  with  these  requirements  could  result,  among  other  things,  in
suspension of regulatory approval, recalls, injunctions or civil or criminal sanctions.

Third‑Party Payor Coverage and Reimbursement

The commercial success of our product candidates, if approved, will depend, in part, upon the availability of coverage and
adequate  reimbursement  from  third‑party  payors  at  the  federal,  state  and  private  levels.  Third‑party  payors  include
governmental  programs  such  as  Medicare  or  Medicaid,  private  insurance  plans  and  managed  care  plans.  These  third‑party
payors may deny coverage or reimbursement for our product candidates in whole or in part if they determine that our product
candidates are not medically appropriate or necessary. Also, third-party payors attempt to control costs by limiting coverage
through  the  use  of  formularies  and  other  cost‑containment  mechanisms  and  the  amount  of  reimbursement  for  particular
procedures or drug treatments.

22

 
 
Some third‑party payors also require pre‑approval of coverage for new or innovative devices or drug therapies before they
will reimburse healthcare providers who use such therapies. While we cannot predict whether any proposed cost‑containment
measures will be adopted or otherwise implemented in the future, these requirements or any announcement or adoption of such
proposals could have a material adverse effect on our ability to obtain adequate prices for our approved product candidates to
operate profitably.

Employees

As  of  December  31,  2019,  we  had  9  full-time  employees.  None  of  our  employees  are  represented  by  a  labor  union  or
covered  under  a  collective  bargaining  agreement.  We  also  engage  numerous  consultants  to  perform  services  on  retainer,  per
diem or an hourly basis.

Corporate Information

We were incorporated as a Delaware corporation in May 1998 under the name Pain Therapeutics, Inc. On March 26, 2019,
we  changed  our  company  name  to  Cassava  Sciences,  Inc.  Our  principal  offices  are  located  at  7801  N.  Capital  of  Texas
Highway,  Suite  260,  Austin,  TX,  78731.  Our 
is
www.CassavaSciences.com.

is  512-501-2444.  Our  website  address 

telephone  number 

We use Cassava Sciences, the Cassava Sciences logo, artwork and other marks as trademarks in the United States and other
countries. Solely for convenience, trademarks and trade names referred to in this Annual Report, including logos, artwork, and
other visual displays, may appear without the ® or TM symbols, but such references are not intended to indicate in any way that
we  will  not  assert,  to  the  fullest  extent  under  applicable  law,  our  rights,  or  the  rights  of  the  applicable  licensor  to  these
trademarks and trade names. We do not intend our use or display of other entities’ trade names, trademarks, or service marks to
imply a relationship with, or endorsement or sponsorship of us by, any other entity.

We file electronically with the Securities and Exchange Commission, or 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(a) or 15(d) of the Securities Exchange Act of
1934.  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 the site is http://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 
the  SEC  on  our  website  at
http://www.cassavasciences.com, by contacting our corporate offices by calling 512-501-2450 or by sending an e-mail message
to IR@cassavasciences.com.

the  day  of 

filing  with 

reports  on 

those 

to 

23

 
 
Item 1A.     Risk Factors

RISK FACTORS

Investing in our common stock involves a high degree of risk. You should carefully consider the risks described below, as
well as other information contained in this Annual Report on Form 10-K, including our financial statements and the related
notes and the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” before
deciding whether to invest in our common stock. The occurrence of any of the events or developments described below could
harm our business, financial condition, results of operations, and growth prospects. In such an event, the market price of our
common stock could decline, and you may lose all or part of your investment.

Additional risks and  uncertainties  not  presently  known  to  us  or  that  we  currently  deem  immaterial  also  may  impair  our

business operations and the market price of our common stock.

Risks Related to Our Business, Financial Condition, and Capital Requirements

We may need to cease our operations if we are unable to retain key personnel.

We are engaged in developing early-stage technologies and will continue to do so for the foreseeable future.  Unlike
larger  organizations,  we  rely  on  a  very  small  number  of  highly  skilled,  and  highly  sought  after,  employees  to  continue  the
advancement  of  our  development  stage  technologies.  The  knowledge  and  skills  contributed  by  our  key  employees  may  be
irreplaceable and the loss of a key employee may cause substantial negative financial, operational and scientific consequences
for our business.  As an example, our research grant awards from NIH depend in part on the continued participation of certain
key employees, known as a Principal Investigator.  The loss of a Principal Investigator may result in the loss of one or more
research grant awards from NIH, which would have significant adverse effects on our ability to continue to conduct, conclude
or  fund  our  research  programs  in  Alzheimer’s  disease.  Likewise,  the  intellectual  property  that  is  intended  to  protect  our
development stage technologies is still evolving and its evolution remains highly dependent on a small number of employees
with specific expertise. The loss of a key employee may jeopardize our existing or pending intellectual property or may prevent
us  from  accessing  the  technical  information  and  knowledge  necessary  to  extend  our  portfolio  of  intellectual  property.
Furthermore, we believe the adverse effects that may result from losing a key employee’s participation cannot be compensated
with any specific insurance policies, such as “key person” or “business life” insurance. If we are not successful in retaining key
employees, our business and financial condition will suffer, and we may need to cease our operations.

We will need substantial funding to advance PTI-125 into a Phase 3 clinical efficacy program in Alzheimer’s disease.

We believe our future success is highly dependent upon our ability to successfully advance PTI-125 in a Phase 3 clinical
efficacy program in patients with Alzheimer’s disease. Phase 3 programs in Alzheimer’s are complex and costly, sometimes
exceeding  $100  million  in  the  aggregate  over  a  period  of  years.  We  currently  do  not  have  sufficient  cash-on-hand  to  fund  a
Phase  3  program  of  PTI-125  in  Alzheimer’s  disease,  nor  can  we  readily  anticipate  having  access  to  such  funding  in  the
future.  If access to sufficient funds does become available to us in the future, the terms and conditions may be so onerous that
current stockholders will suffer substantial dilution or loss of investment. If we cannot access sufficient funds, we will not be
able to advance PTI-125 in a Phase 3 clinical efficacy program and our business, results of operations and financial condition
will suffer.

We may not be successful in developing our product candidates in neurodegeneration. 

Our product candidates in neurodegeneration are still in the early stages of development and will take several more years to
develop  and  must  undergo  extensive  clinical  and  scientific  validations. Even  if  we  are  successful  in  developing  any  of  our
product candidates through clinical and scientific validation, we may not be able to develop a drug or a diagnostic that:

·

·

·

meets applicable regulatory standards, in a timely manner or at all;

successfully competes with other technologies and tests; 

avoids infringing the proprietary rights of others; 

24

 
 
·

·

·

are adequately reimbursed by third-party payors; 

can be performed at commercial levels or at reasonable cost; or

can be successfully marketed.

To  the  extent  we  are  not  successful  in  developing  our  new  product  candidates  in  neurodegeneration,  our  results  of

operations and business will be materially adversely affected. 

We have a limited operating history in our business targeting Alzheimer’s disease and no history of product approvals for
commercial sale, which may make it difficult to evaluate our current business and predict our future success and viability.

We  are  an  early  clinical-stage  biopharmaceutical  company  with  a  limited  operating  history  in  our  business  targeting
Alzheimer’s  disease.  Since  we  commenced  operations  in  May  1998,  we  have  had  no  product  candidates  approved  for
commercial sale and have not generated any revenue from product sales. Drug development is a highly uncertain undertaking
and  involves  a  substantial  degree  of  risk.  To  date,  we  have  not  initiated  or  completed  a  pivotal  clinical  study  involving
Alzheimer’s  disease,  obtained  marketing  approval  for  any  product  candidates,  or  conducted  sales  and  marketing  activities
necessary for successful product commercialization. Our long operating history as a company without product revenue makes
any assessment of our future success and viability subject to significant uncertainty.

We will continue to encounter risks and difficulties frequently experienced by early-stage biopharmaceutical companies in
rapidly evolving fields. We have not yet demonstrated an ability to successfully overcome such risks and difficulties. If we do
not  successfully  address  these  risks  and  difficulties,  our  business,  results  of  operations  and  financial  condition  will  suffer
materially.

In  addition,  from  inception  through  2018  our  principal  activity  was  analgesic  drug  development.    In  late  2018,  we
announced a strategic shift away from analgesic drug development to focus on neurodegeneration. Going forward, and for the
foreseeable future, we anticipate that our product candidates for neurodegeneration will be the principal focus of our business
operations and such efforts will consume the vast majority of our resources. We may not be successful in transitioning to the
development of product candidates for neurodegeneration, such as Alzheimer’s disease.

We have incurred significant net losses in each period since our inception and anticipate that we will continue to incur net
losses for the foreseeable future.

We have incurred net losses in each reporting period since our inception, including a net loss of $4.6 million for the year

ended December 31, 2019. As of December 31, 2019, we had an accumulated deficit of $168.6 million.

We have invested significant financial resources in research and development activities for product candidates. We do not
expect to generate revenue from product sales for several years, if at all. The amount of our future net losses will depend, in
part, on the level of our future expenditures and revenue. Moreover, our net losses may fluctuate significantly from quarter to
quarter and year to year, such that a period-to-period comparison of our results of operations may not be a good indicator of our
future performance.

We expect to continue to incur significant expenses and higher operating losses for the foreseeable future. We anticipate

that our expenses will increase substantially as we:  

·

·

·

·

·

continue our research and discovery activities;

advance our current and any future product candidates through preclinical and clinical development;

initiate and conduct additional preclinical, clinical, or other studies for our product candidates;

work with our CDMO’s to scale up the manufacturing processes for our product candidates;

seek regulatory approvals and marketing authorizations for our product candidates;

25

 
 
·

·

·

·

·

obtain, maintain, protect, defend and enforce our intellectual property portfolio;

attract, hire, and retain qualified personnel;

provide additional internal infrastructure to support our continued research and development operations and
any planned commercialization efforts in the future;

experience any delays or encounter other issues related to our operations; and

meet the requirements and demands of being a public company.

Our  prior  losses  and  expected  future  losses  have  had  and  will  continue  to  have  an  adverse  effect  on  our  stockholders’
equity  and  working  capital.  In  any  quarter,  our  operating  results  could  be  below  the  expectations  of  securities  analysts  or
investors, which could cause our stock price to decline.

We have no product revenues and may never achieve revenues or profitability based on product revenues.

We have no products approved for commercial sale. To obtain revenues from the sales of our product candidates that are
significant or large enough to achieve profitability, we must succeed, either alone or with third parties, in developing, obtaining
regulatory  approval  for,  manufacturing,  and  marketing  product  candidates  with  significant  commercial  value.  This  is  a
significant  endeavor  that  few  early-stage  biopharmaceutical  companies  can  successfully  achieve.  Our  ability  to  generate
revenue and achieve profitability depends on many factors, including:

·

·

·

·

·

·

·

·

completing research and preclinical and clinical development of our product candidates;

obtaining regulatory approvals and marketing authorizations for product candidates for which we successfully
complete clinical development;

developing  a  sustainable  and  scalable  manufacturing  process  for  our  product  candidates,  as  well  as
establishing  and  maintaining  commercially  viable  supply  relationships  with  third  parties  that  can  provide
adequate  products  and  services  to  support  clinical  activities  and  commercial  demand  for  our  product
candidates;

identifying, assessing, acquiring, and/or developing new product candidates;

negotiating favorable terms in any collaboration, licensing, or other arrangements into which we may enter;

addressing any competing technological and market developments;

maintaining,  protecting,  expanding,  and  enforcing  our  portfolio  of  intellectual  property  rights,  including
patents, trade secrets, and know-how; and 

attracting, hiring, and retaining qualified personnel.

Because of the numerous risks and uncertainties associated with drug development, we are unable to predict the timing or
amount of our expenses, or when we will be able to generate any meaningful revenue or achieve or maintain profitability, if
ever.  In  addition,  our  expenses  could  increase  beyond  our  current  expectations  if  we  are  required  by  the  FDA  or  foreign
regulatory agencies to perform studies in addition to those that we currently anticipate, or if there are any delays in any of our
clinical studies or the development of any of our product candidates.

We  will  require  additional  capital  to  fund  our  operations  and  to  complete  the  development  of  our  product  candidates.  A
failure to obtain this necessary capital on acceptable terms, or at all, could force us to delay, limit, reduce, or terminate our
commercialization efforts, product development, or other operations.

Our  operations  have  required  substantial  amounts  of  cash  since  inception,  and  we  expect  our  expenses  to  increase

significantly in the foreseeable future. To date, we have financed our operations primarily through the sale of equity securities,

26

 
 
 
 
research grants and payments received from prior third-party collaborations. Developing our product candidates and conducting
clinical studies for the treatment of neurodegenerative diseases, including Alzheimer’s disease, will require substantial amounts
of capital. We will also require a significant amount of capital to commercialize any approved products.

As of December 31, 2019, we had cash and cash equivalents of $23.1 million. Based on our current operating plan, we
believe  that  our  existing  cash  and  cash  equivalents  will  be  sufficient  to  fund  our  projected  operations  for  at  least  the  next
12 months. Our estimate as to how long we expect our existing cash and cash equivalents to be available to fund our operations
is based on assumptions that may prove inaccurate, and we could use our available capital resources sooner than we currently
expect.  In  addition,  changing  circumstances  may  cause  us  to  increase  our  spending  significantly  faster  than  we  currently
anticipate, and we may need to spend more money than currently expected because of circumstances beyond our control. We
may need to raise additional funds sooner than we anticipate if we choose to expand more rapidly than we presently anticipate.

We  will  require  additional  capital  for  the  further  development  of  our  product  candidates.  Additional  capital  may  not  be
available when we need it, or on terms acceptable to us or at all. We have no committed source of additional capital. If adequate
capital is not available to us on a timely basis, we may be required to significantly delay, limit, reduce or terminate our research
and development programs or the commercialization of product candidates, if approved, or be unable to continue or expand our
operations,  or  otherwise  capitalize  on  our  business  opportunities,  as  desired,  which  could  materially  affect  our  business,
financial condition, results of operations, and growth prospects and cause the price of our common stock to decline.

To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest
of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely
affect  your  rights  as  a  common  stockholder.  Debt  financing,  if  available,  may  involve  agreements  that  include  covenants
limiting  or  restricting  our  ability  to  take  specific  actions,  such  as  incurring  additional  debt,  making  capital  expenditures,  or
declaring  dividends.  If  we  raise  additional  funds  through  collaborations,  strategic  alliances,  or  licensing  arrangements  with
pharmaceutical  partners,  we  may  have  to  relinquish  valuable  rights  to  our  technologies,  future  revenue  streams,  research
programs, or product candidates, or grant licenses on terms that may not be favorable to us.

Global credit and financial market conditions could negatively impact the value of our portfolio of cash equivalents, short-
term investments or long-term investments and our ability to meet our financing objectives.

Our cash and cash equivalents are generally maintained in highly liquid investments with original maturities of 90 days or
less  at  the  time  of  purchase.  Our  short-term  investments,  if  any,  consist  primarily  of  readily  marketable  debt  securities  with
original maturities of greater than 90 days from the date of purchase but remaining maturities of less than one year from the
balance sheet date. Our long-term investments, if any, consist primarily of readily marketable debt securities with maturities in
one  year  or  beyond  from  the  balance  sheet  date.  While,  as  of  the  date  of  this  filing,  we  are  not  aware  of  any  downgrades,
material losses, or other significant deterioration in the fair value of our cash equivalents, short-term investments or long-term
investments  since  December  31,  2019,  no  assurance  can  be  given  that  deterioration  in  conditions  of  the  global  credit  and
financial markets would not negatively impact our current portfolio of cash equivalents, short-term investments or long-term
investments or our ability to meet our financing objectives.

New accounting pronouncements and legislative actions may significantly impact our future financial position or results of
operations.

Future  changes  in  financial  accounting  standards  may  cause  adverse,  unexpected  fluctuations  in  the  timing  of  the
recognition of revenues or expenses and may affect our financial position or results of operations. New pronouncements and
varying  interpretations  of  existing  pronouncements  have  occurred  with  frequency,  and  may  occur  again  in  the  future,  which
may  require  us  to  make  changes  in  our  accounting  policies  in  the  future.  Compliance  with  changing  regulation  of  corporate
governance  and  public  disclosure  may  result  in  additional  expenses.  Changing  laws,  regulations  and  standards  relating  to
corporate governance and public disclosure, including the Sarbanes-Oxley Act of 2002 (SOX), new SEC regulations, PCAOB
pronouncements and Nasdaq rules, are creating uncertainty for companies such as ours and insurance, accounting and auditing
costs are high as a result of this uncertainty and other factors. We are committed to maintaining high standards of corporate
governance and public disclosure. As a result, we intend to invest all reasonably necessary resources to comply with evolving
standards, and this investment may result in increased general and administrative expenses and a diversion of management time
and attention to compliance activities.

27

 
 
Risks Related to the Discovery, Development, and Commercialization of Our Product Candidates

Research and development of biopharmaceutical products is very risky. Our business is heavily dependent on the successful
development of our product candidates, which are all in the early stages of development. We cannot give any assurance that
any of our product candidates will receive regulatory approval, which is necessary before they can be commercialized.

We  are  at  the  early  stages  of  development  of  our  product  candidates.  To  date,  we  have  invested  substantial  effort  and
financial  resources  to  identify,  procure  intellectual  property  for,  and  develop  our  programs  in  neurodegeneration,  including
conducting preclinical studies and early-stage clinical studies for our product candidates, PTI-125 and SavaDx, and providing
general and administrative support for these operations. Our future success is dependent on our ability to successfully develop,
obtain regulatory approval for, and then successfully commercialize our product candidates, and we may fail to do so for many
reasons, including the following:  

·

·

·

·

·

·

·

·

·

our product candidates may not successfully complete preclinical studies or clinical studies;

a product candidate may, on further study, be shown to have harmful side effects or other characteristics that
indicate it is unlikely to be effective or otherwise does not meet applicable regulatory criteria;

our competitors may develop products that render our product candidates obsolete or less attractive;

the product candidates that we develop may not be sufficiently covered by intellectual property;

the  product  candidates  that  we  develop  may  be  challenged  by  third  parties’  patents  or  other  intellectual
property or exclusive rights;

the market for our product candidates may change so that the continued development of a product candidate
is no longer reasonable or commercially attractive;

our product candidate may not be capable of being produced in commercial quantities at an acceptable cost,
or at all;

if  a  product  candidate  obtains  regulatory  approval,  we  may  be  unable  to  establish  sales  and  marketing
capabilities, or successfully market such approved product candidate, to gain market acceptance; and

 a product candidate may not be accepted as safe, effective or useful by patients, the medical community or
third-party payors, if applicable.

If  any  of  these  events  occur,  we  may  be  forced  to  abandon  our  development  efforts  for  a  program  or  programs,  which

would have a material adverse effect on our business and could potentially cause us to cease operations.

We may not be successful in our efforts to further develop our current product candidates. We are not permitted to market
or  promote  any  of  our  product  candidates  before  we  receive  regulatory  approval  from  the  FDA  or  comparable  foreign
regulatory  authorities,  and  we  may  never  receive  such  regulatory  approval  for  any  of  our  product  candidates.  Each  of  our
product  candidates  is  in  the  early  stages  of  development  and  will  require  significant  additional  clinical  development,
management  of  preclinical,  clinical,  and  manufacturing  activities,  regulatory  approval,  adequate  manufacturing  supply,  a
commercial organization, and significant marketing efforts before we generate any revenue from product sales, if at all.

We  have  never  completed  a  product  development  program  in  neurodegeneration.  None  of  our  product  candidates  in
neurodegeneration have advanced into late-stage development and it may be years before any such study is initiated, if at all.
Further, we cannot be certain that any of our product candidates will be successful in clinical studies. We may in the future
advance product candidates into clinical studies and terminate such studies prior to their completion.

If  any  of  our  product  candidates  successfully  complete  clinical  studies,  we  may  seek  regulatory  approval  to  market  our
product  candidates  in  the  U.S.,  the  European  Union,  and  in  additional  foreign  countries  where  we  believe  there  is  a  viable
commercial  opportunity.  We  may  never  receive  regulatory  approval  to  market  any  product  candidates  even  if  such  product
candidates successfully complete clinical studies, which would adversely affect our viability. To obtain regulatory approval

28

 
 
in  countries  outside  the  U.S.,  we  would  need  to  comply  with  numerous  and  varying  regulatory  requirements  of  such  other
countries regarding safety, efficacy, manufacturing and controls, clinical studies, commercial sales, pricing, and distribution of
our  product  candidates.  Even  if  we  are  successful  in  obtaining  approval  in  one  jurisdiction,  we  cannot  ensure  that  we  will
obtain  approval  in  any  other  jurisdictions.  If  we  are  unable  to  obtain  approval  for  our  product  candidates  in  multiple
jurisdictions, our business, financial condition, results of operations, and our growth prospects could be negatively affected.

Even if we receive regulatory approval to market any of our product candidates, whether for the treatment or diagnosis of
neurodegenerative diseases or other diseases, we cannot provide assurance that any such product candidate will be successfully
commercialized, widely accepted in the marketplace or more effective than other commercially available alternatives.

Investment  in  biopharmaceutical  product  development  involves  significant  risk  that  any  product  candidate  will  fail  to
demonstrate adequate efficacy or an acceptable safety profile, gain regulatory approval, and become commercially viable. We
cannot  provide  any  assurance  that  we  will  be  able  to  successfully  advance  any  of  our  product  candidates  through  the
development process or, if approved, successfully commercialize any of our product candidates.

Alzheimer’s disease has failed every attempt at drug approval.

Despite billions of dollars invested by the biopharmaceutical industry in research programs to develop novel therapeutics
for Alzheimer’s disease, no FDA approved treatments have been developed in the past 15 years. In that span of time, many new
types and classes of drugs have been developed and tested in Alzheimer’s disease, including monoclonal antibodies, g-secretase
modulators  and  inhibitors,  β-site  amyloid  precursor  protein  cleaving  enzyme  (BACE)  inhibitors,  receptor  for  advanced
glycation end-products (RAGE) inhibitors, nicotinic agonists, serotonin subtype receptor (5HT6) antagonists, and others. All of
these scientific programs have failed in clinical testing. 

We may not be successful in our efforts to expand our technology or product candidates in other indications.

Our  drug  development  strategy  is  to  clinically  test  and  seek  regulatory  approval  for  our  product  candidates  in
Alzheimer’s disease, our primary indication. We may expand our research efforts outside of this primary indication and into
other areas of clinical medicine based on genetic, biological or mechanistic overlap with the primary indication. Conducting
clinical  studies  for  additional  indications  for  our  product  candidates  will  require  substantial  technical,  financial  and  human
resources and is prone to the inherent risks of failure in drug development. We cannot provide you any assurance that we will
be  successful  in  our  effort  to  expand  our  technology  or  our  product  candidates  in  additional  indications,  even  if  we  obtain
approval for our product candidate in Alzheimer’s disease.

We  only  have  two  product  candidates  in  clinical  development  and  we  may  not  be  successful  in  our  efforts  to  continue  to
create  additional  product  candidates.  If  we  fail  to  successfully  identify  and  develop  additional  product  candidates,  our
commercial opportunity may be limited.

Identifying,  developing,  obtaining  regulatory  approval,  and  commercializing  additional  product  candidates  requires
substantial  expertise  and  funding  and  is  prone  to  the  risks  of  failure  inherent  in  drug  development.  We  cannot  provide  any
assurance that we will be able to successfully identify or acquire additional product candidates, advance any additional product
candidates through the development process, or assemble sufficient resources to identify, acquire, or develop additional product
candidates. If we are unable to successfully identify, acquire, develop, and commercialize additional product candidates, our
commercial opportunity may be limited.

Early indications of safety, tolerability or biomarker results from our small clinical studies with PTI-125 may not predict the
results of later studies

Results  of  a  Phase  1  clinical  study  with  PTI-125  demonstrated  safety,  tolerability  and  pharmacokinetics  in  24  healthy
subjects exposed to 50-200 mg in a single ascending dose study. However,  this  was  a  small,  “first-in-human” Phase 1  study
designed to assess the initial safety characteristics of PTI-125 in healthy subjects and this study was not designed to, and did
not, evaluate safety, tolerability and efficacy of PTI-125 in patients. Additional large, well-controlled, multi-dose studies will be
required to evaluate the safety, tolerability and efficacy of PTI-125 to treat patients with any indication, including Alzheimer’s
disease. There can be no assurance that such future studies will demonstrate the safety, tolerability or efficacy of PTI-125.

29

 
 
Results of a Phase 2a clinical study with PTI-125 demonstrated a reduction in biomarkers of disease. However, this was a
small, first-in-patient, clinical-proof-of-concept Phase 2a study designed to assess the initial safety characteristics of PTI-125 in
patients. Our Phase 2a study was not designed to, and did not, evaluate large-scale or long-term safety, tolerability and efficacy
of PTI-125 in patients. Additional large, well-controlled, multi-dose studies will be required to evaluate the safety, tolerability
and  efficacy  of  PTI-125  to  treat  patients  with  any  indication,  including  Alzheimer’s  disease.  There  can  be  no  assurance  that
such  future  studies  will  demonstrate  the  safety,  tolerability  or  efficacy  of  PTI-125.  The  failure  of  PTI-125  to  show  safety,
tolerability or efficacy in any future clinical studies would significantly harm our business.

We  have  never  obtained  FDA  approval  for  a  diagnostic  test  and  we  may  not  be  able  to  secure  such  approval  in  a  timely
manner or at all.

We are developing a blood-based diagnostic test for Alzheimer’s disease, called SavaDx, which will require FDA approval
prior to commercialization. Our diagnostic product candidate, marketing, sales and development activities and manufacturing
processes  are  subject  to  extensive  and  rigorous  regulation  by  the  FDA  pursuant  to  the  FDCA,  by  comparable  agencies  in
foreign  countries,  and  by  other  regulatory  agencies  and  governing  bodies.  Under  the  FDCA,  a  diagnostic  must  receive  FDA
clearance  or  approval  before  it  can  be  commercially  marketed  in  the  U.S.  The  process  of  obtaining  marketing  approval  or
clearance from the FDA or by comparable agencies in foreign countries for new products could:

·

·

·

·

·

take a significant period of time;

require the expenditure of substantial resources;

 involve rigorous pre-clinical testing, as well as increased post-market surveillance; 

require changes to products; and 

result in limitations on the indicated uses of products.

If we do not compete effectively with scientific and commercial competitors, we may not be able to successfully develop our
diagnostic test for Alzheimer’s disease.

The field of clinical laboratory testing is highly competitive. Diagnostic tests that are developed are characterized by rapid
technological  change.  Our  competitors  in  the  U.S.  and  abroad  are  numerous  and  include,  among  others,  major  diagnostic
companies, reference laboratories, molecular diagnostic firms, universities and other research institutions. Most of our potential
competitors have considerably greater financial, technical, marketing and other resources than we do, which may allow these
competitors  to  discover  important  biological  markers  and  determine  their  function  before  we  do.  We  could  be  adversely
affected if we do not discover proteins or biomarkers and characterize their function, develop diagnostic and pharmaceutical
and clinical services based on these discoveries, obtain required regulatory and other approvals and launch these tests and their
related services before our competitors. We also expect to encounter significant competition with respect to any diagnostic tests
that we may develop or commercialize. Those companies that bring to market new diagnostic tests before we do may achieve a
significant  competitive  advantage  in  marketing  and  commercializing  their  tests.  We  may  not  be  able  to  develop  additional
diagnostic tests successfully and we may not obtain or enforce patents covering these tests that provide protection against our
competitors. Moreover, our competitors may succeed in developing diagnostic tests that circumvent our technologies or tests.
Furthermore, our competitors may succeed in developing technologies or tests that are more effective or less costly than those
developed by us or that would render our technologies or tests less competitive or obsolete. We expect competition to intensify
in the fields in which we are involved as technical advances in these fields occur and become more widely known and changes
in intellectual property laws generate challenges to our intellectual property position.

Our blood-based diagnostic to detect Alzheimer’s disease, called SavaDx, relies in part on the use of research antibodies that
we  source  from  commercial  vendors.  Research  antibodies  are  not  consistently  available  or  reliable,  and  we  will  need  to
develop our own proprietary antibodies to advance our diagnostic program.

SavaDx currently relies on the use of commercially available antibodies, which are complex molecules that can recognize

and bind to an intended protein. Commercially available antibodies present certain technical flaws, such as improper

30

 
 
validation,  significant  batch-to-batch  variations  or  inconsistent  storage,  any  of  which  can  jeopardize  our  studies  and
experiments.  Because  antibody  underperformance  can  be  a  significant  drain  on  time  and  resources,  we  are  developing  and
validating our own, fit-for-purpose antibody for use with SavaDx and such technical activities are on-going. The complexity of
developing our own antibody gives rise to many technical issues that are challenging to solve, and we cannot be certain that we
will be able to successfully complete any of these activities, in which case our program may be harmed.

We  are  heavily  dependent  on  the  success  of  PTI-125  and  SavaDx,  our  product  candidates  which  are  still  under  clinical
development. If these product candidates do not receive regulatory approval, our business may be harmed.

Since inception, we have not succeeded in getting regulatory approval for our product candidates and we may never do so.
In recent years we have invested a significant portion of our efforts and financial resources in the development of PTI-125 and
SavaDx for the treatment and detection of Alzheimer’s disease, respectively. Our future success is substantially dependent on
our ability to successfully complete clinical development and obtain regulatory approval for our product candidates, which may
never occur. We expect that a substantial portion of our efforts and expenditures over the next few years will be devoted to PTI-
125  and  SavaDx.  This  will  require  additional  clinical  development,  management  of  clinical  and  manufacturing  activities,
regulatory  approval  in  one  or  more  national  jurisdictions  and  obtaining  commercial-scale  manufacturing  supply.  Substantial
investment and significant efforts will be required before we can generate any revenues from any commercial sales. We cannot
be certain that we will be able to successfully complete any of these activities.

We  have  concentrated  a  substantial  portion  of  our  research  and  development  efforts  on  the  treatment  and  detection  of
Alzheimer’s disease, an area of research that has seen significant failure rates. Further, our product candidates are based
on new scientific approaches and novel technology, which makes it difficult to predict the time and cost of product candidate
development.

We focus substantially all of our research and development efforts on addressing neurodegenerations, such as Alzheimer’s
disease.  Collectively,  efforts  by  biopharmaceutical  companies  in  the  field  of  neurodegenerative  diseases  have  seen  many
failures  and  limited  success  in  drug  development.  For  example,  there  are  no  therapeutic  options  available  to  reverse
Alzheimer’s disease, or even to halt its progress. Our future success is highly dependent on the successful development of our
product candidates for treating Alzheimer’s disease. Developing and, if approved, commercializing our product candidates for
treatment of Alzheimer’s disease subjects us to many challenges, including obtaining regulatory approval from the FDA and
other regulatory authorities who have only a limited set of precedents to rely on. We cannot be sure that our approach will yield
satisfactory therapeutic products that are safe and effective, scalable, or profitable.

Our Phase    2  clinical  studies  with  PTI-125  in  patients  with  Alzheimer’s  disease  are  not  designed  to  show  a  statistically
meaningful difference between those patients who receive placebo and those who receive drug.

Clinical research data is often analyzed with statistical probability (p-value) to address the question of whether a clinical
observation  is  related  to  a  treatment  effect,  a  random  effect  or  something  else.  This,  in  turn,  requires  a  clinical  study  to
incorporate a sufficiently large sample patient population to infer the appropriate statistical analysis. By  design,  our  Phase  2
clinical  program  with  PTI-125  does  not  include  a  sufficiently  large  patient  population  to  generate  statistical  probability  on
clinical observations. This feature may make it difficult for investors to properly interpret whether clinical observations in our
Phase 2 studies with PTI-125, if any, are important or meaningful. Conversely, our clinical studies may generate statistically
meaningful  data  (i.e.,  p<0.05)  with  regard  to  biomarkers,  or  other  endpoints,  that  has  trivial  or  no  clinical  importance.  In
general, the distinction between statistical significance and clinical significance is a complex area of research that continues to
evolve and may be subject to differences of opinion among scientists, clinicians and other professionals. 

We may encounter substantial delays in our clinical studies or may not be able to conduct or complete our clinical studies
on the timelines we expect, if at all.

Clinical testing is expensive, time consuming, and subject to uncertainty. We cannot guarantee that any clinical studies will
be conducted as planned or completed on schedule, if at all. We cannot be sure that submission of an IND or a clinical study
application  (CTA)  will  result  in  the  FDA  or  European  Medicines  Agency  (EMA),  as  applicable,  allowing  clinical  studies  to
begin in a timely manner, if at all. Moreover, even if these studies begin, safety or other issues may arise that could suspend or
terminate such clinical studies. A failure of one or more clinical studies can occur at any stage of testing, and our future clinical
studies may not be successful. Events that may prevent successful or timely initiation or completion of clinical studies include:

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inability to generate sufficient preclinical, toxicology, or other in vivo or in vitro data to support the initiation
or continuation of clinical studies;

delays  in  confirming  target  engagement,  patient  selection,  or  other  relevant  biomarkers  to  be  utilized  in
preclinical and clinical product candidate development;

delays in reaching a consensus with regulatory agencies on study design;

delays in reaching an agreement on acceptable terms with prospective contract research organizations (CROs)
and clinical study sites, the terms of which can be subject to extensive negotiation and may vary significantly
among different CROs and clinical study sites;

delays in identifying, recruiting, and training suitable clinical investigators;

delays in obtaining required IRB approval for each clinical study site;

  imposition  of  a  temporary  or  permanent  clinical  hold  by  regulatory  agencies  for  a  number  of  reasons,
including:

 after review of an IND or amendment, CTA or amendment, or equivalent application or amendment;

 as a result of a new safety finding that presents unreasonable risk to clinical study participants;

 a negative finding from an inspection of our clinical study operations or study sites; or

the finding that the investigational protocol or plan is clearly deficient to meet its stated objectives;

delays  in  identifying,  recruiting,  and  enrolling  suitable  patients  to  participate  in  our  clinical  studies,  and
delays caused by patients withdrawing from clinical studies, or failing to return for post-treatment follow-up;

delays caused by disease epidemics or pandemics, such as COVID-19, a novel coronavirus first detected in
2019 and for which no specific vaccine or treatment are currently available;

difficulty collaborating with patient groups and investigators;

failure by our CROs, other third parties, or us to adhere to clinical study requirements;

failure to perform in accordance with the FDA’s or any other regulatory authority’s Code of Good Clinical
Practice (GCPs) requirements, or applicable EMA or other regulatory guidelines in other countries;

occurrence of adverse events associated with the product candidate that are viewed to outweigh its potential
benefits;

changes in regulatory requirements and guidance that require amending or submitting new clinical protocols;

changes in the standard of care on which a clinical development plan was based, which may require new or
additional studies;

the cost of clinical studies of our product candidates being greater than we anticipate;

clinical studies of our product candidates producing negative or inconclusive results, which may result in our
deciding,  or  regulators  requiring  us,  to  conduct  additional  clinical  studies  or  abandon  product  development
programs; and

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delays  in  manufacturing,  testing,  releasing,  validating,  or  importing/exporting  sufficient  stable  quantities  of
our product candidates for use in clinical studies or the inability to do any of the foregoing.

Any inability to successfully initiate or complete clinical studies could result in additional costs to us or impair our ability
to  generate  revenue.  In  addition,  if  we  make  manufacturing  or  formulation  changes  to  our  product  candidates,  we  may  be
required  to,  or  we  may  elect,  to  conduct  additional  studies  to  bridge  our  modified  product  candidates  to  earlier  versions.
Clinical  study  delays  could  also  shorten  any  periods  during  which  our  products  have  patent  protection  and  may  allow  our
competitors to bring products to market before we do, which could impair our ability to successfully commercialize our product
candidates and may harm our business and results of operations.

We could also encounter delays if a clinical study is suspended or terminated by us, by the data safety monitoring board for
such study or by the FDA, EMA, or any other regulatory authority, or if the IRBs of the institutions in which such studies are
being conducted suspend or terminate the participation of their clinical investigators. Such authorities may suspend or terminate
a  clinical  study  due  to  a  number  of  factors,  including  failure  to  conduct  the  clinical  study  in  accordance  with  regulatory
requirements  or  our  clinical  protocols,  inspection  of  the  clinical  study  operations  or  study  site  by  the  FDA,  EMA,  or  other
regulatory authorities resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to
demonstrate a benefit from using a product candidate, changes in governmental regulations or administrative actions, or lack of
adequate funding to continue the clinical trial. 

We may in the future advance product candidates into clinical studies and terminate such studies prior to their completion,

which could adversely affect our business.

Delays in the completion of any clinical study of our product candidates will increase our costs, slow down our product
candidate  development  and  approval  process  and  delay,  or  potentially  jeopardize  our  ability  to  commence  product  sales  and
generate revenue. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical
studies may also ultimately lead to the denial of regulatory approval of our product candidates.

We may encounter difficulties enrolling patients in our clinical studies, and our clinical development activities could thereby
be delayed or otherwise adversely affected.

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

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the size and nature of the patient population;

the patient eligibility criteria defined in the protocol, including biomarker-driven identification and/or certain
highly-specific  criteria  related  to  stage  of  disease  progression,  which  may  limit  the  patient  populations
eligible for our clinical studies to a greater extent than competing clinical studies for the same indication that
do not have biomarker-driven patient eligibility criteria;

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

the design of the study;

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

competing clinical studies for similar therapies or targeting patient populations meeting our patient eligibility
criteria;

clinicians’ and patients’ perceptions as to the potential advantages and side effects of the product candidate
being studied in relation to other available therapies and product candidates;

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our ability to obtain and maintain patient consents; and

the risk that patients enrolled in clinical studies will not complete such studies, for any reason.

Our clinical studies may fail to demonstrate substantial evidence of the safety and efficacy of our product candidates, which
would prevent, delay, or limit the scope of regulatory approval and commercialization.

Before obtaining regulatory approvals for any of our product candidates, we must demonstrate through lengthy, complex,
and expensive preclinical experiments and clinical studies that our product candidates are both safe and effective for use in an
intended  population.  Each  product  candidate  must  demonstrate  an  adequate  risk  versus  benefit  profile  in  its  intended  patient
population and for its intended use.

Clinical  testing  is  expensive  and  can  take  many  years  to  complete,  and  its  outcome  is  inherently  uncertain.  Failure  can
occur  at  any  time  during  the  clinical  study  process.  The  results  of  preclinical  studies  of  our  product  candidates  may  not  be
predictive  of  the  results  of  early-stage  or  later-stage  clinical  studies,  and  results  of  early  clinical  studies  of  our  product
candidates may not be predictive of the results of later-stage clinical studies. The results of clinical studies in one set of patients
or disease indications may not be predictive of those obtained in another. In some instances, there can be significant variability
in safety or efficacy results between different clinical studies of the same product candidate due to numerous factors, including
changes in study procedures set forth in protocols, differences in the size and type of the patient populations, changes in and
adherence to the dosing regimen, and other clinical study protocols and the rate of dropout among clinical study participants.
Open-label extension studies may also extend the timing and cost of a clinical study substantially. Product candidates in later
stages of clinical studies may fail to show the desired safety and efficacy profile despite having progressed through preclinical
studies  and  initial  clinical  studies.  Many  companies  in  the  biopharmaceutical  industry  have  suffered  significant  setbacks  in
advanced  clinical  studies  due  to  lack  of  efficacy  or  unacceptable  safety  issues,  notwithstanding  promising  results  in  earlier
studies. This is particularly true in neurodegenerative diseases, where failure rates historically have been higher than in many
other  disease  areas.  Most  product  candidates  that  begin  clinical  studies  are  never  approved  by  regulatory  authorities  for
commercialization.

We have limited experience in designing clinical studies in neurodegeneration and may be unable to design and execute a
clinical study to support marketing approval. We cannot be certain that our current clinical studies or any other future clinical
studies  will  be  successful.  Additionally,  any  safety  concerns  observed  in  any  one  of  our  clinical  studies  in  our  targeted
indications  could  limit  the  prospects  for  regulatory  approval  of  our  product  candidates  in  those  and  other  indications,  which
could have a material adverse effect on our business, financial condition, and results of operations.

In  addition,  even  if  such  clinical  studies  are  successfully  completed,  we  cannot  guarantee  that  the  FDA  or  foreign
regulatory  authorities  will  interpret  the  results  as  we  do,  and  more  studies  could  be  required  before  we  submit  our  product
candidates  for  approval.  To  the  extent  that  the  results  of  the  studies  are  not  satisfactory  to  the  FDA  or  foreign  regulatory
authorities  for  support  of  a  marketing  application,  we  may  be  required  to  expend  significant  resources,  which  may  not  be
available  to  us,  to  conduct  additional  studies  in  support  of  potential  approval  of  our  product  candidates.  Even  if  regulatory
approval is secured for any of our product candidates, the terms of such approval may limit the scope and use of our product
candidates, which may also limit its commercial potential.

The market opportunities for PTI-125 and SavaDx, if approved, may be smaller than we anticipate.

If our clinical development programs succeed, we expect to seek regulatory approval of PTI-125 and SavaDx for patients
with  Alzheimer’s  disease.  Our  projections  of  the  number  of  patients  with  Alzheimer’s  disease  is  based  on  our  beliefs  and
estimates. These estimates have been derived from a variety of sources, including scientific literature, patient foundations and
market  research,  and  may  prove  to  be  incorrect.  The  actual  number  of  patients  may  turn  out  to  be  lower  than  expected.
Additionally, the potential patient population for our current programs or future product candidates may be limited. Even if we
obtain  significant  market  share  for  any  product  candidate,  if  approved,  if  the  potential  target  populations  are  smaller  than
anticipated, we may never achieve profitability without obtaining marketing approval for additional indications.

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We face significant competition in an environment of rapid technological and scientific change, and there is a possibility
that our competitors may achieve regulatory approval before us or develop therapies that are safer, more advanced, or more
effective than ours, any of which may harm our business operations. 

The  development  and  commercialization  of  new  product  candidates 

the
neurodegenerative field is characterized by intense and increasing competition, and a strong emphasis on intellectual property.
We may face competition with respect to any of our product candidates that we seek to develop or commercialize in the future
from  major  pharmaceutical  companies,  specialty  pharmaceutical  companies,  and  biotechnology  companies  worldwide.
Potential  competitors  also  include  academic  institutions,  government  agencies,  and  other  public  and  private  research
organizations that conduct research, seek patent protection, and establish collaborative arrangements for research, development,
manufacturing, and commercialization.

is  highly  competitive.  Moreover, 

Several  large  pharmaceutical  and  biotechnology  companies  are  currently  pursuing  the  development  of  products  for  the
treatment of neurodegenerative diseases, including Alzheimer’s disease. Many of these current or potential competitors, either
alone or with their strategic partners, have significantly greater financial resources and expertise in research and development,
manufacturing,  preclinical  testing,  conducting  clinical  studies,  obtaining  regulatory  approvals,  and  marketing  approved
products than we do.

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize products that
are safer, more effective, have fewer or less severe side effects, are more convenient, or are less expensive than any products
that  we  may  develop.  Furthermore,  currently  approved  products  could  be  discovered  to  have  application  for  treatment  of
neurodegenerative  disease  indications,  which  could  give  such  products  significant  advantages  over  any  of  our  product
candidates. Our competitors also may obtain FDA, EMA, or other regulatory approval for their products more rapidly than we
may obtain approval for ours, which could result in our competitors establishing a strong market position before we are able to
enter  the  market.  Additionally,  products  or  technologies  developed  by  our  competitors  may  render  our  potential  product
candidates  uneconomical  or  obsolete,  and  we  may  not  be  successful  in  marketing  any  product  candidates  we  may  develop
against competitors.

In  addition,  we  could  face  litigation  or  other  proceedings  with  respect  to  the  scope,  ownership,  validity,  and/or
enforceability of our patents relating to our competitors’ products and our competitors may allege that our products infringe,
misappropriate,  or  otherwise  violate  their  intellectual  property.  The  availability  of  our  competitors’  products  could  limit  the
demand, and the price we are able to charge, for any products that we may develop and commercialize.

The manufacture of our product candidates is complex, and we may encounter difficulties in production. If we or any of our
third-party manufacturers encounter such difficulties, or fail to meet rigorously enforced regulatory standards, our ability to
provide supply of our product candidates for clinical studies or our products for patients, if approved, could be delayed or
stopped, or we may be unable to maintain a commercially viable cost structure.

The processes involved in manufacturing our product candidates are complex, expensive, highly regulated, and subject to
multiple  risks.  Further,  as  product  candidates  are  developed  through  preclinical  studies  to  late-stage  clinical  studies  towards
approval  and  commercialization,  it  is  common  that  various  aspects  of  the  development  program,  such  as  manufacturing
methods, are altered along the way in an effort to optimize processes and results. Such changes carry the risk that they will not
achieve  these  intended  objectives,  and  any  of  these  changes  could  cause  our  product  candidates  to  perform  differently  and
affect the results of planned clinical studies or other future clinical studies.

In order to conduct clinical studies of our product candidates, or supply commercial products, if approved, we will need to
manufacture them in large quantities. Our contract development and manufacturing organizations (CDMOs) may be unable to
successfully increase the manufacturing capacity for any of our product candidates in a timely or cost-effective manner, or at
all.  In  addition,  quality  issues  may  arise  during  scale-up  activities.  If  our  CDMOs  are  unable  to  successfully  scale  up  the
manufacture of our product candidates in sufficient quality and quantity, the development, testing, and clinical studies of that
product candidate may be delayed or become infeasible, and regulatory approval or commercial launch of any resulting product
may  be  delayed  or  not  obtained,  which  could  significantly  harm  our  business.  The  same  risk  would  apply  to  our  internal
manufacturing facilities, should we in the future decide to build internal manufacturing capacity. In addition, building internal
manufacturing capacity would carry significant risks in terms of being able to plan, design, and execute on a complex project to
build manufacturing facilities in a timely and cost-efficient manner.

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In  addition,  the  manufacturing  process  for  any  products  that  we  may  develop  is  subject  to  FDA,  EMA,  and  foreign
regulatory authority approval processes, and continuous oversight, and we will need to contract with manufacturers who can
meet all applicable FDA, EMA, and foreign regulatory authority requirements, including complying with cGMP on an ongoing
basis. If we or our third-party manufacturers are unable to reliably produce products to specifications acceptable to the FDA,
EMA, or other regulatory authorities, we may not obtain or maintain the approvals we need to commercialize such products.
Even if we obtain regulatory approval for any of our product candidates, there is no assurance that either we or our CDMOs
will be able to manufacture the approved product to specifications acceptable to the FDA, EMA, or other regulatory authorities,
to produce it in sufficient quantities to meet the requirements for the potential launch of the product, or to meet potential future
demand. Any of these challenges could delay completion of clinical studies, require bridging clinical studies or the repetition of
one or more clinical studies, increase clinical study costs, delay approval of our product candidates, impair commercialization
efforts, increase our cost of goods, and have an adverse effect on our business, financial condition, results of operations, and
growth prospects.

If our product candidates receive regulatory approval, we and our collaborators will be subject to ongoing FDA obligations
and continued regulatory review, such as continued safety reporting requirements, and we and our collaborators may also
be subject to additional FDA post-marketing obligations or new regulations, all of which may result in significant expense
and limit our and our collaborators’ ability to commercialize our potential drugs.

Any regulatory approvals that our product candidates receive may also be subject to limitations on the indicated uses for
which the drug may be marketed or contain requirements for potentially costly post-marketing follow-up studies. In addition, if
the  FDA  approves  any  of  our  product  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 but not limited to adverse events of unanticipated severity or frequency,
or  the  discovery  that  adverse  events  previously  observed  in  preclinical  research  or  clinical  studies  that  were  believed  to  be
minor  actually  constitute  much  more  serious  problems,  may  result  in  restrictions  on  the  marketing  of  the  drug,  and  could
include withdrawal of the drug from the market.

The  FDA’s  policies  may  change,  and  additional  government  regulations  may  be  enacted  that  could  prevent  or  delay
regulatory  approval  of  our  product  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  U.S.  or  abroad.  If  we  are  not  able  to
maintain regulatory compliance, we may be subject to fines, suspension or withdrawal of regulatory approvals, product recalls,
seizure of products, operating restrictions and criminal prosecution. Any of these events could prevent us from marketing our
drugs and our business could suffer.

Risks Related to Regulatory Approval and Other Legal Compliance Matters

The regulatory cycles of the FDA, EMA, and comparable foreign regulatory authorities are lengthy, time consuming, and
inherently unpredictable. If we are ultimately unable to obtain regulatory approval for our product candidates, we will be
unable to generate product revenue and our business will be substantially harmed.

The time required to obtain approval by the FDA, EMA, and comparable foreign regulatory authorities is unpredictable,
typically takes many years following the commencement of clinical studies, and depends upon numerous factors, including the
type, complexity, and novelty of the product candidates involved. In addition, approval policies, regulations, or the type and
amount of clinical data necessary to gain approval may change during the course of a product candidate’s clinical development
and  may  vary  among  jurisdictions,  which  may  cause  delays  in  the  approval  or  the  decision  not  to  approve  an  application.
Regulatory  authorities  have  substantial  discretion  in  the  approval  process  and  may  refuse  to  accept  any  application  or  may
decide that our data are insufficient for approval and require additional preclinical, clinical, or other studies. The FDA has not
approved a new drug for Alzheimer’s disease since 2003. We have not obtained regulatory approval for any product candidate,
including our product candidates aimed at Alzheimer’s disease, and it is possible that none of our existing product candidates or
any product candidates we may seek to develop in the future will ever obtain regulatory approval.

Applications for our product candidates could fail to receive regulatory approval in an initial or subsequent indication for

many reasons, including but not limited to the following:

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the FDA, EMA, or comparable foreign regulatory authorities may disagree with the design, implementation,
or results of our clinical studies;

the FDA, EMA, or comparable foreign regulatory authorities may determine that our product candidates are
not safe and effective, only moderately effective or have undesirable or unintended side effects, toxicities, or
other characteristics that preclude our obtaining marketing approval or prevent or limit commercial use;

the  population  studied  in  the  clinical  program  may  not  be  sufficiently  broad  or  representative  to  assure
efficacy and safety in the full population for which we seek approval;

we  may  be  unable  to  demonstrate  to  the  FDA,  EMA  or  comparable  foreign  regulatory  authorities  that  a
product candidate’s risk-benefit ratio when compared to the standard of care is acceptable;

the  FDA,  EMA,  or  comparable  foreign  regulatory  authorities  may  disagree  with  our  interpretation  of  data
from preclinical studies or clinical studies;

the  data  collected  from  clinical  studies  of  our  product  candidates  may  not  be  sufficient  to  support  the
submission  of  a  new  drug  application  (NDA),  or  other  submission  or  to  obtain  regulatory  approval  in  the
United States or elsewhere;

the  FDA,  EMA,  or  comparable  foreign  regulatory  authorities  may  fail  to  approve  the  manufacturing
processes,  test  procedures,  and  specifications,  or  facilities  of  third-party  manufacturers  with  which  we
contract for clinical and commercial supplies; and

the  approval  policies  or  regulations  of  the  FDA,  EMA,  or  comparable  foreign  regulatory  authorities  may
significantly change in a manner rendering our clinical data insufficient for approval.

This lengthy approval process, as well as the unpredictability of the results of clinical studies, may result in our failing to
obtain  regulatory  approval  to  market  any  of  our  product  candidates,  which  would  significantly  harm  our  business,  results  of
operations, and growth prospects.

Our  product  candidates  may  cause  undesirable  side  effects  or  have  other  properties  that  could  halt  their  clinical
development,  prevent  their  regulatory  approval,  limit  their  commercial  potential,  or  result  in  significant  negative
consequences.

We have not yet completed long term safety studies with PTI-125 to determine if this product candidate is safe for humans.
Adverse events or other undesirable side effects caused by PTI-125 could cause us or regulatory authorities to interrupt, delay,
or halt clinical studies and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA,
EMA, or other comparable foreign regulatory authorities.

Drug-related  side  effects  could  affect  patient  recruitment,  the  ability  of  enrolled  patients  to  complete  the  study,  and/or
result  in  potential  product  liability  claims.  We  are  required  to  maintain  product  liability  insurance  pursuant  to  certain  of  our
development and commercialization agreements. We may not be able to maintain insurance coverage at a reasonable cost or in
sufficient amounts to protect us against losses due to liability. A successful product liability claim or series of claims brought
against us could adversely affect our results of operations, business, and reputation. In addition, regardless of merit or eventual
outcome, product liability claims may result in impairment of our business reputation, withdrawal of clinical study participants,
costs due to related litigation, distraction of management’s attention from our primary business, initiation of investigations by
regulators, substantial monetary awards to patients or other claimants, the inability to commercialize our product candidates,
and decreased demand for our product candidates, if approved for commercial sale.

Our employees, independent contractors, consultants, commercial partners, and vendors may engage in misconduct or other
improper activities, including noncompliance with regulatory standards and requirements.

We  are  exposed  to  the  risk  of  fraud,  misconduct,  or  other  illegal  activity  by  our  employees,  independent  contractors,
consultants, commercial partners, and vendors. Misconduct by these parties could include intentional, reckless, and negligent
conduct that fails to:

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comply with the laws of the FDA, EMA, and other comparable foreign regulatory authorities;

provide true, complete, and accurate information to the FDA, EMA, and other comparable foreign regulatory
authorities;

comply with manufacturing standards we have established;

comply with healthcare fraud and abuse laws in the U.S. and similar foreign fraudulent misconduct laws; or

report financial information or data accurately or to disclose unauthorized activities to us.

Activities subject to laws also involve the improper use of information obtained in the course of patient recruitment for
clinical studies, which could result in regulatory sanctions and cause serious harm to our reputation. Further, it is not always
possible to identify and deter misconduct by employees and third parties, and the precautions we take to detect and prevent this
activity  may  not  be  effective  in  controlling  unknown  or  unmanaged  risks  or  losses  or  in  protecting  us  from  governmental
investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws. If any such actions are
instituted  against  us,  and  we  are  not  successful  in  defending  ourselves  or  asserting  our  rights,  those  actions  could  have  a
significant impact on our business, including the imposition of significant fines or other sanctions.

A  recent  federal  court  ruling  may  mandate  significant  new  disclosure  requirements  for  clinical  data  dating  back  over  a
decade.    In  many  cases,  we  were  the  responsible  party  for  generating  such  clinical  data,  but  it  may  be  difficult  or  not
feasible to access such data, which may leave us in a conflicting position in regards to these new disclosure requirements.

A  recent  federal  court  ruling  may  require  all  clinical  study  sponsors  to  report  a  decade’s  worth  of  previously  exempted
clinical study data to the federal government for publication on ClinicalTrials.gov. In February 2020, the U.S. District Court for
the Southern District of New York invalidated a prior interpretation of NIH regulations that had exempted many clinical studies
conducted between 2007 and 2017 from reporting requirements mandated by the Food and Drug Administration Amendments
Act. If this court ruling takes effect without appeal, or if it is upheld on appeal, it could require us to submit an onerous amount
of old clinical data to the federal government. In many cases, we were the responsible party for generating such clinical data,
but such prior data may be difficult or not feasible for us to access as a result of our strategic shift away from analgesic drug
development in 2019.  We may no longer have control over, or access to, prior clinical data that we may legally be required to
report to NIH in the future.  Furthermore, it is unclear whether such new disclosure requirements apply to inactive, failed or
abandoned  drug  development  programs.  As  a  result  of  these  uncertainties,  the  government’s  recent  ruling  may  leave  us  in  a
conflicted  position  or  out  of  compliance  with  new  disclosure  requirements.    We  currently  do  not  and  cannot  understand  or
anticipate the full impact and potential implications of this recent court ruling on our business.

Risks Related to Our Reliance on Third Parties

We expect to rely on third parties to conduct our studies and some aspects of our research, and such third parties may not
perform satisfactorily, including failing to meet deadlines for the completion of such studies, research, or testing.

We currently rely and expect to continue to rely on third parties, such as CROs, clinical data management organizations,
medical institutions, and clinical investigators, to conduct some aspects of our research and preclinical testing and our clinical
studies. Any of these third parties may terminate their engagements with us or be unable to fulfill their contractual obligations.
If we need to enter into alternative arrangements, it will delay our product development activities.

Our reliance on these third parties for research and development activities reduces our control over these activities but does
not  relieve  us  of  our  responsibilities.  For  example,  we  remain  responsible  for  ensuring  that  all  of  our  clinical  studies  are
conducted  in  accordance  with  the  general  investigational  plan  and  protocols  for  the  trial.  Moreover,  the  FDA  requires  us  to
comply with the norms of Good Clinical Practice (GCPs) for conducting, recording, and reporting the results of clinical studies
to assure that data and reported results are credible, reproducible, and accurate and that the rights, integrity, and confidentiality
of study participants are protected. We also are required to register ongoing clinical studies and post the results of completed
clinical  studies  on  a  government-sponsored  database  within  certain  timeframes.  Failure  to  do  so  can  result  in  fines,  adverse
publicity, and civil and criminal sanctions.

38

 
 
If our third party vendors do not successfully carry out their contractual duties, meet expected deadlines, or conduct studies
in  accordance  with  regulatory  requirements  or  our  stated  protocols,  we  will  not  be  able  to  obtain,  or  may  be  delayed  in
obtaining, marketing approvals for any product candidates we may develop and will not be able to, or may be delayed in our
efforts  to,  successfully  commercialize  our  product  candidates.  For  example,  one  of  our  vendors  failed  to  fully  comply  with
certain  Good  Laboratory  Practice  (GLP)  norms  in  its  research  facility,  which  required  us  to  repeat  a  lab  study  at  a  different
research site.

We also expect to rely on other third parties to store and distribute drug supplies for our clinical studies. Any performance
failure on the part of our distributors, including with the shipment of any drug supplies, could delay clinical development or
marketing  approval  of  any  product  candidates  we  may  develop  or  commercialization  of  our  product  candidates,  producing
additional losses and depriving us of potential product revenue.

We  contract  with  third  parties  for  the  manufacture  of  materials  for  our  research  programs,  preclinical  studies,  clinical
studies, and for commercialization of any product candidates that we may develop. This reliance on third parties carries and
may  increase  the  risk  that  we  will  not  have  sufficient  quantities  of  such  materials,  product  candidates,  or  any
product candidates that we may develop and commercialize, or that such supply will not be available to us at an acceptable
cost, which could delay, prevent, or impair our development or commercialization efforts.

We do not have any manufacturing facilities. We currently rely on CDMOs for all of the manufacture of our materials for
preclinical  studies  and  clinical  studies  and  expect  to  continue  to  do  so  for  preclinical  studies,  clinical  studies,  and  for
commercial supply of any product candidates that we may develop. We currently have established relationships with several
CDMOs for the manufacturing of our product candidates. We may be unable to establish any further agreements with CDMOs
or  to  do  so  on  acceptable  terms.  Even  if  we  are  able  to  establish  agreements  with  third-party  manufacturers,  reliance  on
CDMOs entails additional risks, including:

·

·

·

·

the possible breach of the manufacturing agreement by the third party;

the  possible  termination  or  nonrenewal  of  the  agreement  by  the  third  party  at  a  time  that  is  costly  or
inconvenient for us;

reliance on the third party for regulatory compliance, quality assurance, safety, and pharmacovigilance and
related reporting; and

the inability to produce required volume in a timely manner and to quality standards.

Third-party manufacturers may not be able to comply with cGMP regulations or similar regulatory requirements outside
the U.S. Our failure, or the failure of our CDMOs, to comply with applicable regulations could result in clinical holds on our
studies,  sanctions  being  imposed  on  us,  including  fines,  injunctions,  civil  penalties,  delays,  suspension  or  withdrawal  of
approvals,  seizures,  or  recalls  of  product  candidates  or  product  candidates,  operating  restrictions,  and  criminal  prosecutions,
any  of  which  could  significantly  and  adversely  affect  supplies  of  our  product  candidates  and  harm  our  business,  financial
condition, results of operations, and growth prospects.

Any  product  candidates  that  we  may  develop  may  compete  with  other  product  candidates  and  products  for  access  to
manufacturing facilities. There are a limited number of manufacturers that operate under cGMP regulations and that might be
capable of manufacturing for us.

Any performance failure on the part of our existing or future third-party manufacturers could delay clinical development or
marketing approval. If any one of our current contract manufacturers cannot perform as agreed, we may be required to replace
that  manufacturer  and  may  incur  added  costs  and  delays  in  identifying  and  qualifying  any  such  replacement.  Furthermore,
securing and reserving production capacity with contract manufacturers may result in significant costs.

Our current and anticipated future dependence upon others for the manufacture of any product candidates we may develop
may adversely affect our future profit margins and our ability to commercialize any medicines that receive marketing approval
on a timely and competitive basis.

39

 
 
We depend on third-party suppliers for key raw materials used in our manufacturing processes, and the loss of these third-
party suppliers or their inability to supply us with adequate raw materials could harm our business.

We rely on third-party suppliers for the supply of the raw materials required for the production of our product candidates,
and we expect to continue to rely on third party manufacturers for the commercial supply of any of our product candidates for
which  we  obtain  marketing  approval.  Our  dependence  on  these  third-party  suppliers  and  the  challenges  we  may  face  in
obtaining adequate supplies of raw materials involve several risks, including limited control over pricing, availability, quality,
and delivery schedules. As a small company, our negotiation leverage is limited and we are likely to get lower priority than our
competitors  who  are  larger  than  we  are.  We  do  not  have  long-term  supply  agreements,  and  we  purchase  our  required  drug
product on a development manufacturing services agreement or purchase order basis. We cannot be certain that our suppliers
will continue to provide us with the quantities of these raw materials that we require or satisfy our anticipated specifications
and quality requirements. Any supply interruption in limited or sole sourced raw materials could materially harm our ability to
manufacture our product candidates until a new source of supply, if any, could be identified and qualified. We may be unable to
find a sufficient alternative supply channel in a reasonable time or on commercially reasonable terms. Any performance failure
on the part of our suppliers could delay the development and potential commercialization of our product candidates, including
limiting  supplies  necessary  for  clinical  studies  and  regulatory  approvals,  which  would  have  a  material  adverse  effect  on  our
business.

Risks Related to Our Intellectual Property

If  we  are  unable  to  obtain  and  maintain  patent  protection  for  any  product  candidates  we  develop,  our  competitors  could
develop and commercialize products similar or identical to ours, and our ability to successfully commercialize any product
candidates we may develop may be adversely affected.

Our success depends in large part on our ability to obtain and maintain patent protection in the U.S. and other countries
with respect to our proprietary product candidates and other technologies we may develop. We seek to protect our proprietary
position by filing patent applications in the U.S. and abroad relating to our core programs and product candidates, as well as
other technologies that are important to our business. Given that the development of our product candidates is at an early stage,
our  intellectual  property  portfolio  with  respect  to  certain  aspects  of  our  product  candidates  is  also  at  an  early  stage.  For
example, we have filed or intend to file patent applications on aspects of our technology and core product candidates; however,
there can be no assurance that any such patent applications will issue as granted patents. Furthermore, in some cases, we have
only  filed  provisional  patent  applications  on  certain  aspects  of  our  technology  and  product  candidates  and  each  of  these
provisional patent applications is not eligible to become an issued patent until, among other things, we file a non-provisional
patent application within 12 months of the filing date of the applicable provisional patent application. Any failure to file a non-
provisional  patent  application  within  this  timeline  could  cause  us  to  lose  the  ability  to  obtain  patent  protection  for  the
inventions disclosed in the associated provisional patent applications.

Furthermore,  in  some  cases,  we  may  not  be  able  to  obtain  issued  claims  covering  compositions  relating  to  our  core
programs and product candidates, as well as other technologies that are important to our business, and instead may need to rely
on filing patent applications with claims covering a method of use and/or method of manufacture for protection of such core
programs, product candidates, and other technologies. There can be no assurance that any such patent applications will issue as
granted  patents,  and  even  if  they  do  issue,  such  patent  claims  may  be  insufficient  to  prevent  third  parties,  such  as  our
competitors,  from  utilizing  our  technology.  Any  failure  to  obtain  or  maintain  patent  protection  with  respect  to  our  core
programs  and  product  candidates  could  have  a  material  adverse  effect  on  our  business,  financial  condition,  results  of
operations, and growth prospects.

40

 
 
If any of our patent applications do not issue as patents in any jurisdiction, we may not be able to compete effectively.

Changes in either the patent laws or their interpretation in the U.S. and other countries may diminish our ability to protect
our inventions, obtain, maintain, and enforce our intellectual property rights and, more generally, could affect the value of our
intellectual property or narrow the scope of our patents with respect to our product candidates. With respect to our intellectual
property  related  to  our  product  candidates,  we  cannot  predict  whether  the  patent  applications  we  are  currently  pursuing  will
issue as patents in any particular jurisdiction or whether the claims of any issued patents will provide sufficient protection from
competitors or other third parties.

The  patent  prosecution  process  is  expensive,  time-consuming,  and  complex,  and  we  may  not  be  able  to  file,  prosecute,
maintain, or enforce all necessary or desirable 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  in  time  to  obtain  patent  protection.
Although we enter into nondisclosure and confidentiality agreements with parties who have access to confidential or patentable
aspects  of  our  research  and  development  output,  such  as  our  employees,  outside  scientific  collaborators,  CROs,  CDMOs,
consultants, advisors, and other third parties, any of these parties may breach the agreements and disclose such output before a
patent  application  is  filed,  thereby  jeopardizing  our  ability  to  seek  patent  protection.  In  addition,  our  ability  to  obtain  and
maintain valid and enforceable patents depends on whether the differences between our inventions and the prior art allow our
inventions  to  be  patentable.  Furthermore,  publications  of  discoveries  in  the  scientific  literature  often  lag  behind  the  actual
discoveries, and patent applications in the U.S. and other jurisdictions are typically not published until 18 months after filing, or
in some cases not at all. Therefore, we cannot be certain that we were the first to make the inventions claimed in any of our
patents or pending patent applications, or that we were the first to file for patent protection of such inventions.

U.S. intellectual property rights around diagnostic methods is a complex, evolving area of law and effective patent claims
may not be available to us for our investigational diagnostic product candidate, SavaDx.

The legal system for intellectual property around diagnostic methods is highly complex, remains uncertain and continues to
evolve. In the U.S., patent courts have struggled to define a clear means of patent eligibility for modern age diagnostics. Case
law interpretations from the U.S. Supreme Court has left certain important scientific advances in the area of diagnostics without
effective patent claims. In 2012, the Supreme Court held that a simple process involving correlations between blood test results
and patient health is not eligible for patent claims because such processes incorporate “laws of nature”. Since then, different
outcomes  from  different  courts,  including  Federal  Circuit,  district  court  and  Patent  Trial  and  Appeal  Board  decisions,  have
continued  to  create  a  sometimes  vague  or  conflicting  legal  framework  for  determining  the  eligibility  of  patent  claims  for
diagnostic  methods.  As  a  result,  we  cannot  be  certain  how  SavaDx  fits  into  the  current  U.S.  legal  framework  for  obtaining
effective patent claims. Furthermore, claims for diagnostic methods can be complicated to enforce. For patent infringement to
occur  with  a  protected  diagnostic,  the  patented  method  must  generally  either  be  performed  by  one  person  in  its  entirety  or
performed by multiple parties all under the control or direction of a single party. Accordingly, even if effective patent claims are
issued  for  SavaDx,  it  may  not  be  practical,  possible  or  even  desirable  to  enforce  potential  infringement  claims  around  this
product candidate.

If the scope of any patent protection we obtain is not sufficiently broad, or if we lose any of our patent protection, our ability
to prevent our competitors from commercializing similar or identical technology and product candidates would be adversely
affected.

The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves complex legal
and  factual  questions,  and  has  been  the  subject  of  much  litigation  in  recent  years.  As  a  result,  the  issuance,  scope,  validity,
enforceability, and commercial value of our patent rights are highly uncertain. Our pending and future patent applications may
not result in patents being issued which protect our product candidates or other technologies or which effectively prevent others
from commercializing competitive technologies and product candidates.

Moreover,  the  coverage  claimed  in  a  patent  application  can  be  significantly  reduced  before  the  patent  is  issued,  and  its
scope can be reinterpreted after issuance. Even if patent applications we own currently or in the future issue as patents, they
may not issue in a form that will provide us with any meaningful protection, prevent competitors or other third parties from
competing  with  us,  or  otherwise  provide  us  with  any  competitive  advantage.  Any  patents  to  which  we  have  rights  may  be
challenged, narrowed, circumvented, or invalidated by third parties. Consequently, we do not know whether product candidates
or other technologies will be protectable or remain protected by valid and enforceable patents. Our competitors or other third
parties may be able to circumvent our patents by developing similar or alternative technologies or products in a

41

 
 
non-infringing  manner  which  could  materially  adversely  affect  our  business,  financial  condition,  results  of  operations  and
growth prospects.

The issuance of a patent is not conclusive as to its inventorship, scope, validity, or enforceability, and our patents may be
challenged in the courts or patent offices in the U.S. and abroad. We may be subject to a third-party pre-issuance submission of
prior art to the United States Patent and Trademark Office (USPTO) or become involved in opposition, derivation, revocation,
reexamination,  post-grant  and  inter  partes  review,  or  interference  proceedings  or  other  similar  proceedings  challenging  our
patent  rights.  An  adverse  determination  in  any  such  submission,  proceeding,  or  litigation  could  reduce  the  scope  of,  or
invalidate  or  render  unenforceable,  such  patent  rights,  allow  third  parties  to  commercialize  our  product  candidates  or  other
technologies and compete directly with us, without payment to us, or result in our inability to manufacture or commercialize
products without infringing third-party patent rights. Moreover, we may have to participate in interference proceedings declared
by the USPTO to determine priority of invention or in post-grant challenge proceedings, such as oppositions in a foreign patent
office,  that  challenge  our  priority  of  invention  or  other  features  of  patentability  with  respect  to  our  patents  and  patent
applications.  Such  challenges  may  result  in  loss  of  patent  rights,  loss  of  exclusivity,  or  in  patent  claims  being  narrowed,
invalidated,  or  held  unenforceable,  which  could  limit  our  ability  to  stop  others  from  using  or  commercializing  similar  or
identical  technology  and  products,  or  limit  the  duration  of  the  patent  protection  of  our  product  candidates  and  other
technologies.  Such  proceedings  also  may  result  in  substantial  cost  and  require  significant  time  from  our  scientists  and
management, even if the eventual outcome is favorable to us. If we are unsuccessful in any such proceeding or other priority or
inventorship dispute, we may be required to obtain and maintain licenses from third parties, including parties involved in any
such interference proceedings or other priority or inventorship disputes. Such licenses may not be available on commercially
reasonable terms or at all or may be non-exclusive. If we are unable to obtain and maintain such licenses, we may need to cease
the development, manufacture, and commercialization of one or more of the product candidates we may develop. The loss of
exclusivity  or  the  narrowing  of  our  owned  and  licensed  patent  claims  could  limit  our  ability  to  stop  others  from  using  or
commercializing similar or identical technology and products.

In  addition,  given  the  amount  of  time  required  for  the  development,  testing,  and  regulatory  review  of  new  product
candidates,  patents  protecting  such  product  candidates  might  expire  before  or  shortly  after  such  product  candidates  are
commercialized.  As  a  result,  our  intellectual  property  may  not  provide  us  with  sufficient  rights  to  exclude  others  from
commercializing products similar or identical to ours.

We may not be able to protect our intellectual property and proprietary rights throughout the world.

Filing, prosecuting, and defending patents on our product candidates and other technologies in all countries throughout the
world would be prohibitively expensive, and the laws of foreign countries may not protect our rights to the same extent as the
laws of the U.S.

Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the U.S.,
or from selling or importing products made using our inventions in and into the U.S. or other jurisdictions. Competitors may
use our technologies in jurisdictions where we have not obtained patent protection to develop their own products, and, further,
may export otherwise infringing products to territories where we have patent protection, but enforcement is not as strong as that
in  the  U.S.  These  products  may  compete  with  our  products,  and  our  patents  or  other  intellectual  property  rights  may  not  be
effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign
jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of
patents,  trade  secrets,  and  other  intellectual  property  protection,  particularly  those  relating  to  biotechnology  products,  which
could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our
intellectual property and proprietary rights generally. Proceedings to enforce our intellectual property and proprietary rights in
foreign  jurisdictions  could  result  in  substantial  costs  and  divert  our  efforts  and  attention  from  other  aspects  of  our  business,
could put our patents at risk of being invalidated or interpreted narrowly, could put our patent applications at risk of not issuing,
and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate, and the damages
or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual
property  and  proprietary  rights  around  the  world  may  be  inadequate  to  obtain  a  significant  commercial  advantage  from  the
intellectual property that we develop or license.

42

 
 
Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  procedural,  document  submission,
fee payment, and other requirements imposed by government 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 government fees on patents and applications will
be due to be paid to the USPTO and various government patent agencies outside of the U.S. over the lifetime of our owned or
licensed  patents  and  applications.  The  USPTO  and  various  non-U.S.  government  agencies  require  compliance  with  several
procedural,  documentary,  fee  payment,  and  other  similar  provisions  during  the  patent  application  process.  In  some  cases,  an
inadvertent lapse can be cured by payment of a late fee or by other means in accordance with the applicable rules. There are
situations, however, in which non-compliance can result in abandonment or lapse of the patent or patent application, resulting
in a partial or complete loss of patent rights in the relevant jurisdiction. In such an event, potential competitors might be able to
enter the market with similar or identical products or technology, which could have a material adverse effect on our business,
financial condition, results of operations, and growth prospects.

Changes  in  U.S.  patent  law  could  diminish  the  value  of  patents  in  general,  thereby  impairing  our  ability  to  protect  our
products.

Changes in either the patent laws or interpretation of the patent laws in the U.S. could increase the uncertainties and costs
surrounding  the  prosecution  of  patent  applications  and  the  enforcement  or  defense  of  issued  patents.  Assuming  that  other
requirements for patentability are met, prior to March 2013, in the U.S., the first to invent the claimed invention was entitled to
the patent, while outside the U.S., the first to file a patent application was entitled to the patent. After March 2013, under the
Leahy-Smith  America  Invents  Act  (the  America  Invents  Act)  enacted  in  September  2011,  the  U.S.  transitioned  to  a  first
inventor to file system in which, assuming that other requirements for patentability are met, the first inventor to file a patent
application will be entitled to the patent on an invention regardless of whether a third party was the first to invent the claimed
invention. A third party that files a patent application in the USPTO after March 2013, but before us could therefore be awarded
a  patent  covering  an  invention  of  ours  even  if  we  had  made  the  invention  before  it  was  made  by  such  third  party.  This  will
require us to be cognizant going forward of the time from invention to filing of a patent application. Since patent applications in
the U.S. and most other countries are confidential for a period of time after filing or until issuance, we cannot be certain that we
were the first to either (i) file any patent application related to our product candidates or other technologies or (ii) invent any of
the inventions claimed in our patents or patent applications.

The  America  Invents  Act  also  includes  a  number  of  significant  changes  that  affect  the  way  patent  applications  will  be
prosecuted  and  also  may  affect  patent  litigation.  These  include  allowing  third  party  submission  of  prior  art  to  the  USPTO
during  patent  prosecution  and  additional  procedures  to  attack  the  validity  of  a  patent  by  USPTO  administered  post-grant
proceedings,  including  post-grant  review,  inter  partes  review,  and  derivation  proceedings.  Because  of  a  lower  evidentiary
standard in USPTO proceedings as compared to the evidentiary standard in U.S. federal courts necessary to invalidate a patent
claim, a third party could potentially provide evidence in a USPTO proceeding sufficient for the USPTO to hold a claim invalid
even  though  the  same  evidence  would  be  insufficient  to  invalidate  the  claim  if  first  presented  in  a  district  court  action.
Accordingly, a third party may attempt to use the USPTO procedures to invalidate our patent claims that would not have been
invalidated if first challenged by the third party as a defendant in a district court action. Therefore, the America Invents Act and
its  implementation  could  increase  the  uncertainties  and  costs  surrounding  the  prosecution  of  our  patent  applications  and  the
enforcement  or  defense  of  our  issued  patents,  all  of  which  could  have  a  material  adverse  effect  on  our  business,  financial
condition, results of operations, and growth prospects.

In  addition,  the  patent  positions  of  companies  in  the  development  and  commercialization  of  pharmaceuticals  are
particularly  uncertain.  Recent  U.S.  Supreme  Court  rulings  have  narrowed  the  scope  of  patent  protection  available  in  certain
circumstances  and  weakened  the  rights  of  patent  owners  in  certain  situations.  This  combination  of  events  has  created
uncertainty with respect to the validity and enforceability of patents, once obtained. Depending on future actions by the U.S.
Congress, the federal courts, and the USPTO, the laws and regulations governing patents could change in unpredictable ways
that could have a material adverse effect on our existing patent portfolio and our ability to protect and enforce our intellectual
property in the future.

43

 
 
Issued  patents  covering  our  product  candidates  and  other  technologies  could  be  found  invalid  or  unenforceable  if
challenged in court or before administrative bodies in the U.S. or abroad.

If  we  initiated  legal  proceedings  against  a  third  party  to  enforce  a  patent  covering  our  product  candidates  or  other
technologies,  the  defendant  could  counterclaim  that  such  patent  is  invalid  or  unenforceable.  In  patent  litigation  in  the  U.S.,
defendant counterclaims alleging invalidity or unenforceability are commonplace. Grounds for a validity challenge could be an
alleged  failure  to  meet  any  of  several  statutory  requirements,  including  lack  of  novelty,  obviousness,  or  non-enablement.
Grounds  for  an  unenforceability  assertion  could  be  an  allegation  that  someone  connected  with  prosecution  of  the  patent
withheld relevant information from the USPTO, or made a misleading statement, during prosecution. Third parties may raise
claims challenging the validity or enforceability of our patents before administrative bodies in the U.S. or abroad, even outside
the  context  of  litigation.  Such  mechanisms  include  re-examination,  post-grant  review,  inter  partes  review,  interference
proceedings,  derivation  proceedings,  and  equivalent  proceedings  in  foreign  jurisdictions  (e.g.,  opposition  proceedings).  Such
proceedings could result in the revocation of, cancellation of, or amendment to our patents in such a way that they no longer
cover our product candidates or other technologies. The outcome following legal assertions of invalidity and unenforceability is
unpredictable. With respect to the validity question, for example, we cannot be certain that there is no invalidating prior art, of
which we or our licensing partners and the patent examiner were unaware during prosecution. If a third party were to prevail on
a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps all, of the patent protection on our
product  candidates  or  other  technologies.  Such  a  loss  of  patent  protection  would  have  a  material  adverse  impact  on  our
business, financial condition, results of operations, and growth prospects.

If we do not obtain patent term extension and data exclusivity for any product candidates we may develop, our business may
be materially harmed.

Depending  upon  the  timing,  duration,  and  specifics  of  any  FDA  marketing  approval  of  any  product  candidates  we  may
develop, one or more of our U.S. patents may be eligible for limited patent term extension under the Drug Price Competition
and Patent Term Restoration Act of 1984 (Hatch-Waxman Act). The Hatch-Waxman Act permits a patent term extension of up
to five years as compensation for patent term lost during the FDA regulatory review process. A patent term extension cannot
extend the remaining term of a patent beyond a total of 14 years from the date of product approval, only one patent may be
extended and only those claims covering the approved drug, a method for using it, or a method for manufacturing it may be
extended.  Similar  extensions  as  compensation  for  patent  term  lost  during  regulatory  review  processes  are  also  available  in
certain foreign countries and territories, such as in Europe under a Supplementary Patent Certificate. However, we may not be
granted  an  extension  in  the  U.S.  and/or  foreign  countries  and  territories  because  of,  for  example,  failing  to  exercise  due
diligence during the testing phase or regulatory review process, failing to apply within applicable deadlines, failing to apply
prior  to  expiration  of  relevant  patents,  or  otherwise  failing  to  satisfy  applicable  requirements.  Moreover,  the  applicable  time
period  or  the  scope  of  patent  protection  afforded  could  be  less  than  we  request.  If  we  are  unable  to  obtain  a  patent  term
extension or the term of any such extension is shorter than what we request, our competitors may obtain approval of competing
products  following  our  patent  expiration,  and  our  business,  financial  condition,  results  of  operations,  and  growth  prospects
could be materially harmed.

We may be subject to claims challenging the inventorship of our patents and other intellectual property.

We may be subject to claims that former employees, scientific collaborators or other third parties have an interest in our
patents,  trade  secrets,  or  other  intellectual  property  as  an  inventor  or  co-inventor.  For  example,  we  may  have  inventorship
disputes  arise  from  conflicting  obligations  of  employees,  consultants,  or  others  who  are  involved  in  developing  our  product
candidates or other technologies. Litigation may be necessary to defend against these and other claims challenging inventorship
or ownership of our patents, trade secrets, or other intellectual property. If the defense of any such claims fails, 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 and other technologies. 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  growth
prospects.

If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed.

In  addition  to  seeking  patents  for  our  product  candidates  and  other  technologies,  we  also  rely  on  trade  secrets  and

confidentiality agreements to protect our unpatented know-how, technology, and other proprietary information and to maintain

44

 
 
our competitive position. We consider trade secrets and know-how to be one of our primary sources of intellectual property.
Trade  secrets  and  know-how  can  be  difficult  to  protect.  We  expect  our  trade  secrets  and  know-how  to  over  time  be
disseminated  within  the  industry  through  independent  development,  the  publication  of  journal  articles  describing  the
methodology, and the movement of personnel from academic to industry scientific positions.

We  seek  to  protect  these  trade  secrets  and  other  proprietary  technology,  in  part,  by  entering  into  non-disclosure  and
confidentiality  agreements  with  parties  who  have  access  to  them,  such  as  our  employees,  corporate  collaborators,  outside
scientific  collaborators,  CROs,  CDMOs,  consultants,  advisors,  and  other  third  parties.  We  also  enter  into  confidentiality  and
invention or patent assignment agreements with our employees and consultants as well as train our employees not to bring or
use proprietary information or technology from former employers to us or in their work, and remind former employees when
they  leave  their  employment  of  their  confidentiality  obligations.  We  cannot  guarantee  that  we  have  entered  into  such
agreements  with  each  party  that  may  have  or  have  had  access  to  our  trade  secrets  or  proprietary  technology  and  processes.
Despite  our  efforts,  any  of  these  parties  may  breach  the  agreements  and  disclose  our  proprietary  information,  including  our
trade secrets, and we may not be able to obtain adequate remedies for such breaches. Enforcing a claim that a party illegally
disclosed or misappropriated a trade secret is difficult, expensive, and time-consuming, and the outcome is unpredictable. In
addition, some courts inside and outside the U.S. are less willing or unwilling to protect trade secrets. If any of our trade secrets
were  to  be  lawfully  obtained  or  independently  developed  by  a  competitor  or  other  third  party,  we  would  have  no  right  to
prevent them from using that technology or information to compete with us. If any of our trade secrets were to be disclosed to
or independently developed by a competitor or other third party, our competitive position would be materially and adversely
harmed.

We may not be successful in obtaining necessary rights to our product candidates or other technologies.

Many pharmaceutical companies, biotechnology companies, and academic institutions that compete with us in the field of
neurodegeneration therapy may have patents filed and are likely filing patent applications potentially relevant to our business.
In  order  to  avoid  infringing  these  third-party  patents,  we  may  find  it  necessary  or  prudent  to  obtain  licenses  to  such  patents
from such third-party intellectual property holders. We may also require licenses from third parties for certain technologies for
use with future product candidates. In addition, with respect to any patents we co-own with third parties, we may wish to obtain
licenses to such co-owner’s interest to such patents. However, we may be unable to secure such licenses or otherwise acquire
any  compositions,  methods  of  use,  processes,  or  other  intellectual  property  rights  from  third  parties  that  we  identify  as
necessary  for  our  future  product  candidates.  The  licensing  or  acquisition  of  third-party  intellectual  property  rights  is  a
competitive area, and several more established companies may pursue strategies to license or acquire third-party intellectual
property rights that we may consider attractive or necessary. These established companies may have a competitive advantage
over us due to their size, capital resources, and greater clinical development and commercialization capabilities. In addition,
companies that perceive us to be a competitor may be unwilling to assign or license rights to us. We also may be unable to
license  or  acquire  third-party  intellectual  property  rights  on  terms  that  would  allow  us  to  make  an  appropriate  return  on  our
investment or at all. If we are unable to successfully obtain rights to required third party intellectual property rights or maintain
the  existing  intellectual  property  rights  we  have,  we  may  have  to  abandon  development  of  the  relevant  program  or  product
candidate, which could have a material adverse effect on our business, financial condition, results of operations, and growth
prospects.

We may be subject to claims that our employees, consultants, or advisors have wrongfully used or disclosed alleged trade
secrets  of  their  current  or  former  employers  or  claims  asserting  ownership  of  what  we  regard  as  our  own  intellectual
property.

Many  of  our  employees,  consultants,  and  advisors  are  currently  or  were  previously  employed  at  universities  or  other
biotechnology or pharmaceutical companies, including our competitors and potential competitors. Although we try to ensure
that our employees, consultants, and advisors do not use the proprietary information or know-how of others in their work for
us, we may be subject to claims that we or these individuals have used or disclosed intellectual property, including trade secrets
or other proprietary information, of any such individual’s current or former employer. Litigation may be necessary to defend
against these claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable
intellectual property rights or personnel. Even if we are successful in defending against such claims, litigation could result in
substantial costs and be a distraction to management.

In  addition,  while  it  is  our  policy  to  require  our  employees  and  contractors  who  may  be  involved  in  the  conception  or

development of intellectual property to execute agreements assigning such intellectual property to us, we may be unsuccessful

45

 
 
in executing such an agreement with each party who, in fact, conceives or develops intellectual property that we regard as our
own. The assignment of intellectual property rights may not be self-executing, or the assignment agreements may be breached,
and we may be forced to bring claims against third parties, or defend claims that they may bring against us, to determine the
ownership of what we regard as our intellectual property. Such claims could have a material adverse effect on our business,
financial condition, results of operations, and growth prospects.

Third-party  claims  of  intellectual  property  infringement,  misappropriation,  or  other  violation  against  us  may  prevent  or
delay the development and commercialization of our product candidates and other technologies.

The field of developing innovations for neurodegenerative diseases is highly competitive and dynamic. Due to the focused
research  and  development  that  is  taking  place  by  several  companies,  including  us  and  our  competitors,  in  this  field,  the
intellectual property landscape is in flux, and it may remain uncertain in the future. Additionally, the technology used in our
product candidates is still in an early stage and no products utilizing similar technology have yet reached the market. As such,
there may be significant intellectual property related litigation and proceedings relating to our, and other third party, intellectual
property and proprietary rights in the future.

Our commercial success depends in part on our ability to develop, manufacture, market, and sell any product candidates
that  we  develop  and  to  use  our  proprietary  technologies  without  infringing,  misappropriating,  and  otherwise  violating  the
patents  and  other  intellectual  property  rights  of  third  parties.  There  is  a  substantial  amount  of  complex  litigation  involving
patents  and  other  intellectual  property  rights  in  the  biotechnology  and  pharmaceutical  industries,  as  well  as  administrative
proceedings  for  challenging  patents,  including  interference,  derivation,  and  reexamination  proceedings  before  the  USPTO  or
oppositions  and  other  comparable  proceedings  in  foreign  jurisdictions.  We  may  become  party  to,  or  threatened  with,  such
actions in the future, regardless of their merit. As discussed above, recently, due to changes in U.S. law referred to as patent
reform,  new  procedures  including  inter  partes  review  and  post-grant  review  have  been  implemented.  As  stated  above,  this
reform adds uncertainty to the possibility of challenge to our patents in the future.

Numerous  U.S.  and  foreign  issued  patents  and  pending  patent  applications  owned  by  third  parties  exist  in  the  fields  in
which we are developing our product candidates. As the biotechnology and pharmaceutical industries expand and more patents
are issued, the risk increases that our product candidates and other technologies may give rise to claims of infringement of the
patent rights of others. Although we believe that we do not infringe on any third parties’ patents or other intellectual property,
we  cannot  assure  you  that  our  product  candidates  and  other  technologies  that  we  have  developed,  are  developing  or  may
develop in the future will not infringe existing or future patents owned by third parties. We may not be aware of patents that
have already been issued to a third party, such as a competitor in the fields in which we are developing product candidates, who
might assert infringement of patents it may hold by our current or future product candidates or other technologies, including
claims to compositions, formulations, methods of manufacture or methods of use or treatment that cover our product candidates
or other technologies. It is also possible that patents owned by third parties of which we are aware, but which we do not believe
are relevant to our product candidates or other technologies, could be found to be infringed by our product candidates or other
technologies.  In  addition,  because  patent  applications  can  take  many  years  to  issue,  there  may  be  currently  pending  patent
applications that may later result in issued patents that our product candidates or other technologies may infringe.

Third parties may have patents or obtain patents in the future and claim that the manufacture, use or sale of our product
candidates  or  other  technologies  infringes  upon  these  patents.  In  the  event  that  any  third-party  claims  that  we  infringe  their
patents or that we are otherwise employing their proprietary technology without authorization and initiates litigation against us,
even  if  we  believe  such  claims  are  without  merit,  a  court  of  competent  jurisdiction  could  hold  that  such  patents  are  valid,
enforceable and infringed by our product candidates or other technologies. In this case, the holders of such patents may be able
to  block  our  ability  to  commercialize  the  applicable  product  candidate  or  technology  unless  we  obtain  a  license  under  the
applicable patents, or until such patents expire or are finally determined to be held invalid or unenforceable. Such a license may
not be available on commercially reasonable terms or at all. Even if we are able to obtain a license, the license would likely
obligate us to pay license fees or royalties or both, and the rights granted to us might be nonexclusive, which could result in our
competitors  gaining  access  to  the  same  intellectual  property.  If  we  are  unable  to  obtain  a  necessary  license  to  a  third-party
patent on commercially reasonable terms, we may be unable to commercialize our product candidates or other technologies, or
such commercialization efforts may be significantly delayed, which could in turn significantly harm our business.

46

 
 
Defense  of  infringement  claims,  regardless  of  their  merit,  would  involve  substantial  litigation  expense  and  would  be  a
substantial diversion of management and other employee resources from our business, and may impact our reputation. In the
event of a successful claim of infringement against us, we may be enjoined from further developing or commercializing our
infringing  product  candidates  or  other  technologies.  In  addition,  we  may  have  to  pay  substantial  damages,  including  treble
damages  and  attorneys’  fees  for  willful  infringement,  obtain  one  or  more  licenses  from  third  parties,  pay  royalties,  and/or
redesign our infringing product candidates or technologies, which may be impossible or require substantial time and monetary
expenditure.  In  that  event,  we  would  be  unable  to  further  develop  and  commercialize  our  product  candidates  or  other
technologies, which could harm our business significantly.

Engaging  in  litigation  to  defend  against  third  parties  alleging  that  we  have  infringed,  misappropriated,  or  otherwise
violated their patents or other intellectual property rights is very expensive, particularly for a company of our size, and time-
consuming.  Some  of  our  competitors  may  be  able  to  sustain  the  costs  of  litigation  or  administrative  proceedings  more
effectively  than  we  can  because  of  greater  financial  resources.  Patent  litigation  and  other  proceedings  may  also  absorb
significant  management  time.  Uncertainties  resulting  from  the  initiation  and  continuation  of  patent  litigation  or  other
proceedings against us could impair our ability to compete in the marketplace. The occurrence of any of the foregoing could
have a material adverse effect on our business, financial condition, results of operations, and growth prospects.

We may become involved in lawsuits to protect or enforce our patents and other intellectual property rights, which could be
expensive, time consuming, and unsuccessful.

Competitors may infringe on our patents or the patents of our licensing partners, or we may be required to defend against
claims  of  infringement.  In  addition,  our  patents  or  the  patents  of  our  licensing  partners  also  may  become  involved  in
inventorship, priority, or validity disputes. To counter or defend against such claims can be expensive and time consuming. In
an infringement proceeding, a court may decide that a patent in which we have an interest is invalid or unenforceable, the other
party’s use of our patented technology falls under the safe harbor to patent infringement, or may refuse to stop the other party
from using the technology at issue on the grounds that our patents do not cover the technology in question. An adverse result in
any litigation proceeding could put one or more of our patents at risk of being invalidated or interpreted narrowly. 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.

Even if resolved in our favor, litigation or other legal proceedings relating to intellectual property claims may cause us to
incur significant expenses and could distract our personnel from their normal responsibilities. In addition, there could be public
announcements of the results of hearings, motions, or other interim proceedings or developments, and if securities analysts or
investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock. Such
litigation or proceedings could substantially increase our operating losses and reduce the resources available for development
activities or any future sales, marketing, or distribution activities. We may not have sufficient financial or other resources to
conduct such litigation or proceedings adequately. Some of our competitors may be able to sustain the costs of such litigation or
proceedings  more  effectively  than  we  can  because  of  their  greater  financial  resources  and  more  mature  and  developed
intellectual  property  portfolios.  Uncertainties  resulting  from  the  initiation  and  continuation  of  patent  litigation  or  other
proceedings could have a material adverse effect on our ability to compete in the marketplace.

Intellectual property rights do not necessarily address all potential threats.

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights
have limitations and may not adequately protect our business or permit us to maintain our competitive advantage. For example:

·

·

·

others may be able to make products that are similar to our product candidates or utilize similar technology
but that are not covered by the claims of the patents that we may own;

we  might  not  have  been  the  first  to  make  the  inventions  covered  by  the  issued  patent  or  pending  patent
application that we own now or in the future;

we might not have been the first to file patent applications covering certain of our inventions;

47

 
 
·

·

·

·

·

·

·

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

it is possible that our current or future pending patent applications will not lead to issued patents;

issued  patents  that  we  hold  rights  to  may  be  held  invalid  or  unenforceable,  including  as  a  result  of  legal
challenges by our competitors or other third parties;

our competitors or other third parties might conduct research and development activities in countries where
we do not have patent rights and then use the information learned from such activities to develop competitive
products for sale in our major commercial markets;

we may not develop additional proprietary technologies that are patentable;

the patents of others may harm our business; and

we may choose not to file a patent in order to maintain certain trade secrets or know-how, and a third party
may subsequently file a patent covering such intellectual property.

Should any of these events occur, they could have a material adverse effect on our business, financial condition, results of

operations, and growth prospects.

Risks Related to Our Operations

The  worldwide  outbreak  of  an  infectious  disease,  called  COVID-19,  may  materially  and  adversely  affect  our  business
operations and our ability to conduct clinical studies.

A  recent,  widespread  outbreak  of  a  novel  infectious  disease  called  Coronavirus  Disease  2019,  or  COVID-19,  has  been
declared by the World Health Organization to be a “public health emergency of international concern”; a national emergency by
the President of the U.S; and a major disaster by several states in which we operate. This unprecedented spread of disease may
affect our operations by causing a period of business disruption, including the potential interruption or halt of our clinical study
activities and delays or disruptions in the supply of our products and product candidates, or the inability of our employees to
continue their normal course of work due to disease, quarantine or leave requirements, or the possibility of legal claims and
actions  against  us  for  claims  of  loss  arising  out  of  COVID-19.  As  a  small  company  that  operates  with  a  limited  number  of
employees, the impact of disease may disproportionately hurt our operations. Further, our business insurance may not provide
coverage against economic loss or claims specifically tied to COVID-19 or any other disease.

COVID-19 presents many challenges that are without precedent. As such, we cannot presently assess or predict all current
and  potential  uncertainties  around  the  scope  and  severity  of  COVID-19  on  our  business  operations  with  any  meaningful
precision. There is no assurance that COVID-19 will not have a material adverse impact on our future results. For example, the
continued spread of COVID-19 could adversely impact our clinical study operations, including our ability to recruit and retain
patients and principal investigators and site staff who, as healthcare providers, may have heightened exposure to COVID-19 if
an  outbreak  occurs  in  their  geography.  COVID-19  could  also  negatively  affect  our  manufacturing  operations,  which  could
result in delays or disruptions in the supply of our product candidates. A greater number of our employees working remotely
during  this  outbreak  of  disease  may  expose  us  to  greater  risks  related  to  cybersecurity  and  cyber-liability.  Our  study
participants,  vendors,  employees,  suppliers  or  others  may  allege  they  became  sick  due  to  our  negligence.  In  addition,  there
could be a potential effect of a slowdown at FDA, which could result in delays of regulatory correspondence that are necessary
for us to maintain or advance our product candidates in clinical studies. Further, the COVID-19 outbreak may adversely impact
our  ability  to  file  on  a  routine  and  timely  basis  our  obligations  under  federal  securities  laws,  present  new  data  at  annual
scientific meetings and attend professional conferences, reach out to institutional investors through in-person meetings, advance
PTI-125 in a Phase 3 efficacy program, add an international component to our clinical studies, obtain additional financing as
needed, engage in partnering discussions or conduct other activities necessary to the success of our business.

48

 
 
If we or any of the third parties with whom we engage were to experience shutdowns or other business disruptions related
to COVID-19, our ability to conduct our business in the manner and on the timelines presently planned could be materially and
negatively impacted, which could have a material adverse effect on our business, results of operations and financial condition.  

We are a small company with a limited number of employees. We are highly dependent on our key personnel, and if we are
not  successful  in  attracting,  motivating,  and  retaining  highly  qualified  personnel,  we  may  not  be  able  to  successfully
implement our business strategy.

Our ability to compete in the highly competitive biotechnology and pharmaceutical industries depends upon our ability to
attract,  motivate,  and  retain  highly  qualified  managerial,  scientific,  and  medical  personnel.  We  are  highly  dependent  on  our
management, particularly our Chief Executive Officer, Remi Barbier, and our scientific and technical personnel. The loss of the
services  provided  by  any  of  our  executive  officers,  other  key  employees,  and  other  scientific  and  medical  advisors,  and  our
inability  to  find  suitable  replacements,  could  result  in  delays  in  the  development  of  our  product  candidates  and  harm  our
business.

Competition for skilled personnel is intense and the turnover rate can be high, which may limit our ability to hire and retain
highly qualified personnel on acceptable terms or at all. We expect that we may need to recruit talent from outside of our region
in Austin, TX, and doing so may be costly and difficult.

To  induce  valuable  employees  to  remain  at  our  company,  in  addition  to  salary  and  cash  incentives,  we  have  provided
equity option grants that vest over time. The value to employees of these equity grants that vest over time may be significantly
affected by movements in our stock price that are beyond our control and may at any time be insufficient to counteract more
lucrative offers from other companies. Although we have employment agreements with our key employees, these employment
agreements provide for at-will employment, which means that any of our employees could leave our employment at any time,
with or without notice. If we are unable to attract and incentivize quality personnel on acceptable terms, or at all, it may cause
our business and operating results to suffer.

If  our  current  research  collaborators  or  scientific  advisors  terminate  their  relationships  with  us  or  develop  relationships
with a competitor, our ability to continue our business operations could be adversely affected.

We have relationships with research collaborators at academic and other institutions who conduct research at our request.
These  research  collaborators  are  not  our  employees.  As  a  result,  we  have  limited  control  over  their  activities  and,  except  as
otherwise  required  by  our  collaboration  agreements,  can  expect  only  limited  amounts  of  their  time  to  be  dedicated  to  our
activities. Our ability to discover drugs and biomarkers involved in human disease and validate and commercialize diagnostic
tests will depend in part on the continuation of these collaborations. If any of these collaborations are terminated, we may not
be  able  to  enter  into  other  acceptable  collaborations.  In  addition,  our  existing  collaborations  may  not  be  successful.  Our
research  collaborators  and  scientific  advisors  may  have  relationships  with  other  commercial  entities,  some  of  which  could
compete with us. Our research collaborators and scientific advisors sign agreements which provide for the confidentiality of our
proprietary  information  and  the  results  of  studies  conducted  at  our  request.  We  may  not,  however,  be  able  to  maintain  the
confidentiality  of  our  technology  and  other  confidential  information  related  to  all  collaborations.  The  dissemination  of  our
confidential information could have a material adverse effect on our business.

We  will  need  to  grow  the  size  and  capabilities  of  our  organization,  and  we  may  experience  difficulties  in  effectively
managing this growth.

As  our  development  plans  and  strategies  develop,  we  may  need  to  add  a  significant  number  of  additional  managerial,
operational,  financial,  and  other  personnel.  Future  growth  will  impose  significant  added  responsibilities  on  members  of
management, including:

·

·

identifying, recruiting, integrating, retaining, and motivating additional employees;

managing our internal development efforts effectively, including the clinical and FDA review process for our
current  and  future  product  candidates,  while  complying  with  our  contractual  obligations  to  contractors  and
other third parties;

49

 
 
·

·

expanding our operational, financial and management controls, reporting systems, and procedures; and 

managing increasing operational and managerial complexity.

Our  future  financial  performance  and  our  ability  to  continue  to  develop  and,  if  approved,  commercialize  our  product
candidates  will  depend,  in  part,  on  our  ability  to  effectively  manage  any  future  growth.  Our  management  may  also  have  to
divert a disproportionate amount of its attention away from day-to-day activities in order to manage these growth activities.

We  currently  rely,  and  for  the  foreseeable  future  will  continue  to  rely,  in  substantial  part  on  certain  independent
organizations,  advisors,  and  consultants  to  provide  certain  services.  There  can  be  no  assurance  that  the  services  of  these
independent organizations, advisors, and consultants will continue to be available to us on a timely basis when needed, or that
we can find qualified replacements. In addition, if we are unable to effectively manage our outsourced activities or if the quality
or  accuracy  of  the  services  provided  by  consultants  is  compromised  for  any  reason,  our  clinical  studies  may  be  extended,
delayed, or terminated, and we may not be able to obtain regulatory approval of our product candidates or otherwise advance
our business. There can be no assurance that we will be able to manage our existing consultants or find other competent outside
contractors and consultants on economically reasonable terms, if at all.

If we are not able to effectively expand our organization by hiring new employees and expanding our groups of consultants
and contractors, we may not be able to successfully implement the tasks necessary to further develop our product candidates
and, accordingly, may not achieve our research, development, and commercialization goals.

Our  internal  computer  systems,  or  those  used  by  our  third-party  research  institution  collaborators,  Clinical  Research
Organizations  (CROs)  or  other  contractors  or  consultants,  may  fail  or  suffer  other  breakdowns,  cyberattacks,  or
information security breaches that could compromise the confidentiality, integrity, and availability of such systems and data,
result  in  material  disruptions  of  our  development  programs  and  business  operations,  risk  disclosure  of  confidential,
financial, or proprietary information, and affect our reputation.

In  the  ordinary  course  of  our  business,  we  collect  and  store  sensitive  data,  including  legally  protected  patient  health
information,  personally  identifiable  information  about  our  employees,  intellectual  property,  and  proprietary  business
information.  We  manage  and  maintain  our  applications  and  data  utilizing  on-site  systems.  These  applications  and  data
encompass  a  wide  variety  of  business-critical  information  including  research  and  development  information,  commercial
information  and  business  and  financial  information.  Despite  the  implementation  of  security  measures,  our  internal  computer
systems  and  those  of  our  current  or  future  CROs  and  other  contractors  and  consultants  may  be  vulnerable  to  damage  from
computer  viruses  and  unauthorized  access.  As  the  cyber-threat  landscape  evolves,  these  attacks  are  growing  in  frequency,
sophistication, and intensity, and are becoming increasingly difficult to detect. Such attacks could include the use of key loggers
or  other  harmful  and  virulent  malware,  including  ransomware  or  other  denials  of  service,  and  can  be  deployed  through
malicious  websites,  the  use  of  social  engineering,  and/or  other  means.  If  a  breakdown,  cyberattack,  or  other  information
security  breach  were  to  occur  and  cause  interruptions  in  our  operations,  it  could  result  in  a  misappropriation  of  confidential
information,  including  our  intellectual  property  or  financial  information,  and  a  material  disruption  of  our  development
programs and our business operations. For example, the loss of clinical study data from completed, ongoing, or future clinical
studies could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the
data.  Likewise,  we  rely  on  our  third-party  research  institution  collaborators  for  research  and  development  of  our  product
candidates  and  other  third  parties  for  the  manufacture  of  our  product  candidates  and  to  conduct  clinical  studies,  and  similar
events  relating  to  their  computer  systems  could  also  have  a  material  adverse  effect  on  our  business.  To  the  extent  that  any
disruption  or  security  breach  were  to  result  in  a  loss  of,  or  damage  to,  our  data  or  systems,  or  inappropriate  disclosure  of
confidential,  financial,  or  proprietary  information,  including  data  related  to  our  personnel,  we  could  incur  liability  or  risk
disclosure  of  confidential,  financial,  or  proprietary  information,  and  the  further  development  and  commercialization  of  our
product candidates could be delayed. There can be no assurance that we and our business counterparties will be successful in
efforts to detect, prevent, or fully recover systems or data from all breakdowns, service interruptions, attacks, or breaches of
systems that could adversely affect our business and operations and/or result in the loss of critical or sensitive data, which could
result in financial, legal, business, or reputational harm to us.

Our business involves environmental risks that may result in liability for us.

In connection with our research and development activities, we, and our collaborators and vendors, are subject to federal,

state and local laws, rules, regulations and policies governing the use, generation, manufacture, storage, air emission, effluent

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discharge, handling and disposal of certain materials, biological specimens, chemicals and wastes. Although we believe that we
comply with such applicable laws, regulations and policies in all material respects and have not been required to correct any
material noncompliance, we may incur significant costs to comply with environmental and health and safety regulations in the
future.  Although  we  believe  that  our  safety  procedures  for  handling  and  disposing  of  controlled  materials  comply  with  the
standards prescribed by state and federal regulations, accidental contamination or injury from these materials may occur. In the
event  of  such  an  occurrence,  we  could  be  held  liable  for  any  damages  that  result  and  any  such  liability  could  exceed  our
resources.

Business disruptions and lack of appropriate levels of commercial insurance could seriously harm our future revenue and
financial condition and increase our costs and expenses.

Our  operations,  and  those  of  our  third-party  research  institution  collaborators,  CROs,  CDMOs,  suppliers,  and  other
contractors  and  consultants,  could  be  subject  to  earthquakes,  power  shortages,  telecommunications  failures,  water  shortages,
floods, hurricanes, typhoons, fires, extreme weather conditions, disease epidemics or pandemics, such as COVID-19, a novel
coronavirus first detected in 2019 and for which no specific vaccine or treatment are available, and other natural or man-made
disasters or business interruptions, for which we are partly or entirely uninsured. In addition, we rely on our third-party research
institution  collaborators  for  conducting  research  and  development  of  our  product  candidates,  and  they  may  be  affected  by
government shutdowns or withdrawn funding. The occurrence of any of these business disruptions could seriously harm our
operations and financial condition and increase our costs and expenses. We rely on third party manufacturers to produce and
process  our  product  candidates.  Our  ability  to  obtain  clinical  supplies  of  our  product  candidates  could  be  disrupted  if  the
operations of these suppliers are affected by a man-made or natural disaster or other business interruption.

Our day-to-day operations are located in a single office facility in Austin, TX. Damage or extended periods of interruption
to our corporate, development, or research facilities could cause us to cease or delay development of some or all our product
candidates. Our insurance might not cover losses under such circumstances and our business may be seriously harmed by such
delays and interruption.

Social media platforms present risks and challenges.

As social media continues to expand, it also presents us with new challenges. The inappropriate or unauthorized use of our
confidential  information  on  media  platforms  could  cause  brand  damage  or  information  leakage,  which  would  cause  legal  or
regulatory  problems  for  us.  In  addition,  negative,  inappropriate  or  inaccurate  posts  or  comments  about  us  or  our  product
candidates  on  social  media  internet  sites  could  quickly  and  irreversible  damage  our  reputation,  brand  image  and  goodwill.
Further, the accidental or intentional disclosure of non-public sensitive information by our workforce or others through media
channels could lead to information loss or could lead to legal or regulatory problems for us.

Risks Related to the Ownership of Our Common Stock

We do not know whether a market will continue to develop for our common stock or what the market price of our common
stock will be, and, as a result, it may be difficult to sell shares of our common stock.

If a market for our common stock is not sustained, it may be difficult to sell shares of our common stock at an attractive
price  or  at  all.  We  cannot  predict  the  prices  at  which  our  common  stock  will  trade.  It  is  possible  that  in  one  or  more  future
periods  our  results  of  operations  and  progression  of  our  product  pipeline  may  not  meet  the  expectations  of  public  market
analysts and investors, and, as a result of these and other factors, the price of our common stock may fall.

The market price of our common stock may be volatile, which could result in substantial losses for investors who purchase
our shares.

Some of the factors that may cause the market price of our common stock to fluctuate include:

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the success of existing or new competitive products or technologies;

the timing and results of clinical studies for our current product candidates and any future product candidates
that we may develop;

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·

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·

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·

·

·

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failure or discontinuation of any of our product development and research programs;

results  of  preclinical  studies,  clinical  studies,  or  regulatory  approvals  of  product  candidates  of  our
competitors, or announcements about new research programs or product candidates of our competitors;

regulatory or legal developments in the United States and other countries;

developments or disputes concerning patent applications, issued patents, or other proprietary rights;

the recruitment or departure of key personnel;

the  level  of  expenses  related  to  any  of  our  research  programs,  clinical  development  programs,  or  product
candidates that we may develop;

the results of our efforts to develop additional product candidates or products;

actual or anticipated changes in estimates as to financial results, development timelines, or recommendations
by securities analysts;

announcement or expectation of additional financing efforts;

sales of our common stock by us, our insiders, or other stockholders;

variations in our financial results or those of companies that are perceived to be similar to us;

changes in estimates or recommendations by securities analysts, if any, that cover our stock;

market conditions in the pharmaceutical and biotechnology sectors; and

general economic, industry, and market conditions.

In recent years, the stock market in general, Nasdaq, and the markets for early stage companies and pharmaceutical and
biotechnology  companies,  has  experienced  significant  price  and  volume  fluctuations  that  have  often  been  unrelated  or
disproportionate to changes in the operating performance of the companies whose stock is experiencing those price and volume
fluctuations. Broad market and industry factors may seriously affect the market price of our common stock, regardless of our
actual operating performance. Following periods of such volatility in the market price of a company’s securities, securities class
action litigation has often been brought against that company. Because of the potential volatility of our stock price, we may
become  the  target  of  securities  litigation  in  the  future.  Securities  litigation  could  result  in  substantial  costs  and  divert
management’s attention and resources from our business.

If securities analysts do not publish research or reports about our business or if they publish negative evaluations of our
stock, the price of our stock and trading volume could decline.

The  trading  market  for  our  common  stock  is  influenced  in  part  by  the  research  and  reports  that  industry  or  financial
analysts publish about us or our business. We do not have any control over the equity research analysts that provide research
coverage  of  our  common  stock  or  the  content  and  opinions  included  in  their  reports.  We  currently  have  limited  research
coverage by industry or financial analysts, and there  is  no  assurance  that  such  coverage  will  continue.  If  no  or  few  analysts
maintain coverage of us, the trading price of our stock could decrease. Even if we do obtain additional analyst coverage, if one
or  more  of  the  analysts  covering  our  business  downgrade  their  evaluations  of  our  stock  or  if  we  fail  to  meet  their  operating
results estimates for us, the price of our stock could decline. If one or more of these analysts cease to cover our stock, we could
lose visibility in the market for our stock, which in turn could cause our stock price and trading volume to decline.

Raising additional capital may cause dilution to our existing stockholders, restrict our operations or require us to relinquish
rights to our technologies or product candidates.

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We  may  seek  additional  capital  through  a  combination  of  public  and  private  equity  offerings,  debt  financings,  strategic
partnerships and alliances, and licensing arrangements. We, and indirectly, our stockholders, will bear the cost of issuing and
servicing such securities. Because our decision to issue debt or equity securities in any future offering will depend on market
conditions  and  other  factors  beyond  our control,  we  cannot  predict  or  estimate  the  amount,  timing,  or  nature  of  any  future
offerings. To the extent that we raise additional capital through the sale of equity or debt securities, your ownership interest will
be diluted, and the terms may include liquidation or other preferences that adversely affect your rights as a stockholder. The
incurrence of indebtedness would result in increased fixed payment obligations and could involve restrictive covenants, such as
limitations on our ability to incur additional debt, limitations on our ability to acquire, sell, or license intellectual property rights
and  other  operating  restrictions  that  could  adversely  impact  our  ability  to  conduct  our  business.  Additionally,  any  future
collaborations we enter into with third parties may provide capital in the near term but limit our potential cash flow and revenue
in  the  future.  If  we  raise  additional  funds  through  strategic  partnerships  and  alliances  and  licensing  arrangements  with  third
parties,  we  may  have  to  relinquish  valuable  rights  to  our  technologies  or  product  candidates,  or  grant  licenses  on  terms
unfavorable to us.

If we are unable to maintain effective internal controls, our business, financial position, and results of operations could be
adversely affected.

As  a  public  company,  we  are  subject  to  reporting  and  other  obligations  under  the  Securities  Exchange  Act  of  1934,  as
amended (Exchange Act), including the requirements of Section 404 of SOX, which require annual management assessments
of the effectiveness of our internal control over financial reporting.

The rules governing the standards that must be met for management to assess our internal control over financial reporting
are complex and require significant documentation, testing and possible remediation to meet the detailed standards under the
rules. During testing, our management may identify material weaknesses or deficiencies which may not be remedied in time to
meet the deadline imposed by SOX. These reporting and other obligations place significant demands on our management and
administrative and operational resources, including accounting resources.

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting.  Our
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 accounting principles
generally accepted in the U.S. Any failure to maintain effective internal controls could have an adverse effect on our business,
financial position, and results of operations.

We are a smaller reporting company and we cannot be certain if the reduced disclosure requirements applicable to smaller
reporting companies will make our common stock less attractive to investors.

We are currently a “smaller reporting company” as defined in the Exchange Act, and are thus allowed to provide simplified
executive compensation disclosures in our filings and have certain other reduced disclosure obligations with respect to our SEC
filings. We will remain a “smaller reporting company” until the aggregate market value of our outstanding common stock held
by  non-affiliates  as  of  the  last  business  day  our  recently  completed  second  fiscal  quarter  is  $700  million  or  more  while  our
revenue remains under $100 million. We cannot predict whether investors will find our common stock less attractive because of
our reliance on any of these exemptions. If some investors find our common stock less attractive as a result, there may be a less
active trading market for our common stock and our stock price may be more volatile.

We cannot ensure that there will be an active, liquid trading market for our common stock, as we have in the past and may
in  the  future  fail  to  meet  all  applicable  listing  requirements  and,  our  common  stock  may  be  delisted  from  The  Nasdaq
Capital Market, which could have an adverse impact on the liquidity and market price of our common stock.

Our common stock is currently listed on The Nasdaq Capital Market, which has qualitative and quantitative listing criteria

that we must meet in order to remain listed on Nasdaq.

Until August 2018, we were listed on the Nasdaq Global Market and have in the past temporarily fallen out of compliance
with  Nasdaq  listing  standards  and  there  can  be  no  assurance  that  we  will  continue  to  meet  the  appropriate  Nasdaq  listing
requirements in the future.

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On March 13, 2018, we received a notice from the staff of The Nasdaq Stock Market LLC (the Staff) that we were not in
compliance  with  Nasdaq  Listing  Rule  5450,  setting  forth  the  requirements  for  continued  listing  on  Nasdaq.  Nasdaq  Listing
Rule 5450 requires, among other things, that we meet one of the three standards under Nasdaq Listing Rule 5450(b); the Equity
Standard; the Market Value Standard; or the Total Asset/Total Revenue Standard. The Staff notice stated that we were not in
compliance with Nasdaq Listing Rule 5450(b)(2)(A) (under the Market Value Standard), as the minimum market value of our
common stock had been below $50 million for 30 consecutive business days. In addition, the Staff notice stated that we did not
meet the requirements under Nasdaq Listing Rule 5450(b)(3)(A) (under the Total Asset/Total Revenue Standard).

On April 26, 2018, following ten consecutive business days during which the market value of our common stock was $50

million or greater, we regained compliance with Nasdaq Listing Rule 5450(b)(2)(A).

On  August  8,  2018,  we  received  a  letter  from  the  Listing  Qualifications  Department  of  Nasdaq  notifying  us  that  our
application  to  transfer  our  Nasdaq  listing  from  the  Nasdaq  Global  Select  Market  to  The  Nasdaq  Capital  Market  had  been
approved. Our common stock was transferred to The Nasdaq Capital Market the opening of business on August 13, 2018 under
the symbol “PTIE.” On March 28, 2019, our common stock symbol was changed to “SAVA”. This transfer of our listing to The
Nasdaq Capital Market or any other similar future transfers could adversely affect the liquidity of our common stock. Any such
event could make it more difficult to dispose of, or obtain accurate quotations for the price of, our common stock, and there
also would likely be a reduction in our coverage by securities analysts, if any, and the news media, which could cause the price
of our common stock to decline further. We may also face other material adverse consequences in such event, such as negative
publicity, a decreased ability to obtain additional financing, diminished investor and/or employee confidence, and the loss of
business development opportunities, some or all of which may contribute to a further decline in our stock price.

If future events cause our common stock to be delisted, the liquidity of our common stock would be adversely affected,
investors may not be able to sell their shares quickly or at the latest market price if trading in our stock is not active, and the
market price of our common stock could decrease.  

Anti-takeover  provisions  in  our  charter  documents  and  Delaware  law  may  prevent  or  delay  removal  of  incumbent
management or a change of control.

Anti-takeover provisions of our amended and restated certificate of incorporation and amended and restated bylaws and
Delaware  law  may  have  the  effect  of  deterring  or  delaying  attempts  by  our  stockholders  to  remove  or  replace  management,
engage in proxy contests and effect changes in control. The provisions of our charter documents include:

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a classified board so that only one of the three classes of directors on our Board is elected each year;

elimination of cumulative voting in the election of directors;

procedures for advance notification of stockholder nominations and proposals;

the ability of the Board to amend our bylaws without stockholder approval; and

the ability of the Board to issue up to 10,000,000 shares of preferred stock without stockholder approval upon
the terms and conditions and with the rights, privileges and preferences as the Board may determine.

In addition, as a Delaware corporation, we are subject to Delaware law, including Section 203 of the Delaware General
Corporation Law. In general, Section 203 prohibits a Delaware corporation from engaging in any business combination with
any interested stockholder for a period of three years following the date that the stockholder became an interested stockholder
unless certain specific requirements are met as set forth in Section 203.

These  provisions,  alone  or  together,  could  have  the  effect  of  deterring  or  delaying  changes  in  incumbent  management,

proxy contests or changes in control.

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Our  share  ownership  is  concentrated,  and  our  officers,  directors  and  principal  stockholders  can  exert  significant  control
over matters requiring stockholder approval.

Due to their combined stock holdings, our officers, directors and principal stockholders (i.e., stockholders holding greater
than 5% of our common stock) acting collectively may have the ability to exercise significant influence over matters requiring
stockholder approval including the election of directors and approval of significant corporate transactions. In particular, Remi
Barbier, our founder, Chairman of the Board, President and Chief Executive Officer, owns or controls a significant amount of
the voting power of our outstanding capital stock. This concentration of ownership may delay or prevent a change in control of
the Company and may make some transactions, including but not limited to any merger, consolidation, or sale of substantially
all of our assets, more difficult or impossible to complete without the support of key stockholders.

Publicly  available  information  regarding  stockholders’  ownership  may  not  be  comprehensive  because  the  SEC  does  not

require certain large stockholders to publicly disclose their stock ownership positions.

If the fair value of our stock increases and outstanding performance awards vest, we expect to use substantial amounts of
cash to fund employee tax liabilities.

We have performance awards outstanding. If these performance awards vest, we expect to issue our employees shares of
our common stock net of statutory employment taxes. This net issuance results in fewer shares issued and uses our cash to fund
such  taxes.  The  use  of  cash  could  be  substantially  higher,  depending  on  the  fair  value  of  our  common  stock  on  the  date  the
performance awards vest. If our use of cash to fund these taxes is substantial, our cash balance could substantially decline and
our stock price could also decline.

We may in the future seek to fund the cash used for performance awards through the sale of our common stock. However,
we may not be successful in selling shares of our common stock to fund the cash used for performance awards. If the number of
shares we sell to fund the cash used for performance awards is significant, our stock price could decline.

Our operating results may fluctuate from quarter to quarter and this fluctuation may cause our stock price to decline.

Our quarterly operating results have fluctuated in the past and are likely to fluctuate in the future. Factors contributing to
these fluctuations include, among other items, the timing and enrollment rates of clinical studies for our product candidates, our
need  for  clinical  supplies,  the  valuation  of  stock-based  compensation  and  grant  reimbursement  received  from  NIH.  Thus,
quarter-to-quarter  comparisons  of  our  operating  results  may  not  be  indicative  of  what  to  expect  in  the  future.  As  a  result,  in
some  future  quarters  our  clinical,  financial  or  operating  results  may  not  meet  the  expectations  of  securities  analysts  and
investors and could result in a decline in the price of our stock.

We may sell additional equity or debt securities to fund our operations, and have outstanding securities exercisable for our
common stock, which may result in dilution to our stockholders and impose restrictions on our business.

In order to raise additional capital to support our operations, we may sell additional shares of our common stock or other

securities convertible into or exchangeable for our common stock which could result in dilution our stockholders.

We cannot assure you that we will be able to sell shares or other securities in any other offering at a price per share that is
equal to or greater than the price per share paid by investors in prior offerings, and investors purchasing our shares or other
securities  in  the  future  could  have  rights  superior  to  existing  shareholders.  The  price  per  share  at  which  we  sell  additional
shares of our common stock or securities convertible into or exchangeable for our common stock in future transactions may be
higher or lower than the price per share in prior offerings. You may also be diluted upon the exercise of warrants outstanding as
of February 29, 2020 to purchase 1,615,999 shares of our common stock at an exercise price of $1.25 per share, outstanding
stock options as of February 29, 2020 to purchase 3,210,965 shares of our common stock at a weighted average price of $12.27
per share, and the future issuance of up to 277,500 compensatory equity awards authorized under our 2018 Omnibus Incentive
Plan and up to 58,017 shares we may sell under our Employee Stock Purchase Plan.

Changes in our ownership could limit our ability to utilize net operating loss carryforwards.

As of December 31, 2019, we had aggregate federal net operating loss carryforwards of approximately $81.5 million,

which begin to expire in 2029. Under Section 382 of the Internal Revenue Code of 1986, as amended, changes in our

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ownership  may  limit  the  amount  of  our  net  operating  loss  carryforwards  that  could  be  utilized  annually  to  offset  our  future
taxable income, if any. This limitation would generally apply in the event of a cumulative change in ownership of our company
of more than 50% within a rolling three-year period. Any such limitation may significantly reduce our ability to utilize our net
operating loss carryforwards and tax credit carryforwards. Any such limitation, whether as the result of past offerings, sales of
our  common  stock  by  our  existing  stockholders  or  additional  sales  of  our  common  stock  by  us  in  the  future  could  have  a
material  adverse  effect  on  our  results  of  operations  in  future  years.  We  have  not  completed  a  study  to  assess  whether  an
ownership change for purposes of Section 382 has occurred, or whether there have been multiple ownership changes since our
inception, nor do we plan to do so due to the significant costs and complexities associated with such study.

Organizational Risks

We  have  broad  discretion  in  the  use  of  the  net  proceeds  from  any  of  our  financing  transactions  and  may  not  use  them
effectively.

Our management has broad discretion in the application of the net proceeds from our financing transactions, and investors
will not have the opportunity to assess whether the net proceeds are being used appropriately. Our management could spend the
net  proceeds  from  offerings  in  ways  that  may  vary  substantially  from  their  intended  use,  do  not  improve  our  results  of
operations or enhance the value of our common stock. The failure by our management to apply these funds effectively could
result  in  financial  losses  that  could  have  a  material  adverse  effect  on  our  business,  cause  the  price  of  our  common  stock  to
decline  and  delay  the  development  of  our  product  candidates.  Pending  their  use,  we  may  invest  the  net  proceeds  from  our
financing transactions in a manner that does not produce income or that loses value.

Risks Relating to Commercialization

We currently have no in-house capabilities to manufacture or commercialize our product candidates and we rely on third-
party commercial drug manufacturers for clinical drug supplies. If we are unable to develop our own manufacturing, sales,
marketing  and  distribution  capabilities,  or  if  we  are  not  successful  in  contracting  with  third  parties  for  these  services  on
favorable terms, or at all, our product revenues could be adversely impacted.

We rely on various third parties to manufacture, fill, label, store, test and ship our product candidates. We plan to continue
to outsource formulation, manufacturing and related activities. These suppliers must comply with cGMP regulations enforced
by  the  FDA  and  other  government  agencies,  and  are  subject  to  ongoing  periodic  unannounced  inspection,  including
preapproval inspections by the FDA and corresponding state and foreign government agencies to ensure strict compliance with
cGMP  and  other  standards.  These  manufacturers  may  subsequently  be  stopped  from  producing,  manufacturing,  filling,
labeling,  storing,  testing  and  shipping  our  product  candidates  due  to  their  non-compliance  with  federal,  state  or  local
regulations. We do not have control over our suppliers’ compliance with these regulations and standards and we cannot control
decisions by our suppliers that affect their ability or willingness to continue to supply us on acceptable terms, or at all.

Disputes  in  the  past  have  arisen  with  some  of  these  third  parties  with  respect  to  fulfilling  certain  conditions  and
obligations. There can be no guarantee that such disputes will not arise again in the future, which may lead to termination of an
agreement.  If  an  agreement  is  terminated,  we  would  not  be  able  to  commercialize  our  product  candidates  until  another
manufacturer is identified and we have entered into a manufacturing agreement with such manufacturer. We may not be able to
replace a commercial supplier on commercially reasonable terms, or at all. Replacing any of our commercial suppliers would
be  expensive  and  time  consuming.  Failure  by  any  of  our  suppliers  to  perform  as  expected  could  delay  or  prevent  the
commercialization  or  potential  regulatory  approval  of  our  product  candidates  for  an  extended  period  of  time,  result  in
shortages, cost overruns or other problems and would materially harm our business.

We currently have no sales, marketing or distribution capabilities. We have not established commercial strategies regarding
any of our product candidates. In order to commercialize our products, if any are approved by the FDA, we will either have to
develop such capabilities internally or collaborate with third parties who can perform these services for us.

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If we decide to commercialize any of our drugs ourselves, we may not be able to

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hire and retain the necessary experienced personnel;

build  sales,  marketing  and  distribution  operations  in  a  cost-effective  manner  which  are  capable  of
successfully launching new drugs;

obtain access to adequate numbers of physicians to prescribe our products; or

generate sufficient product revenues.

In  addition,  establishing  such  operations  on  our  own  will  take  time  and  involve  significant  expense.  If  our  commercial
operations lack complementary products, we may not be able to compete in a cost-effective manner with competitors with more
products to sell. If we engage third-party collaborators to perform any commercial operations, our future revenues may depend
significantly upon the performance of those collaborators.

If we decide to enter into new co-promotion or other licensing arrangements with third parties, we may be unable to locate
acceptable collaborators because the number of potential collaborators is limited and because of competition from others for
similar alliances. Even if we are able to identify one or more acceptable new collaborators, we may not be able to enter into any
collaborative arrangements on favorable terms, or at all.

In  addition,  due  to  the  nature  of  the  market  for  our  product  candidates,  it  may  be  necessary  for  us  to  license  all  or
substantially all of our product candidates to a single collaborator, thereby eliminating our opportunity to commercialize these
other products independently. If we enter into any such new collaborative arrangements, our revenues are likely to be lower
than if we marketed and sold our products ourselves.

In addition, any revenues we receive would depend upon our collaborators’ efforts which may not be adequate due to lack
of attention or resource commitments, management turnover, change of strategic focus, business combinations or other factors
outside  of  our  control.  Depending  upon  the  terms  of  our  collaboration,  the  remedies  we  have  against  an  under-performing
collaborator may be limited. If we were to terminate the relationship, it may be difficult or impossible to find a replacement
collaborator on acceptable terms, or at all.

If physicians and patients do not accept and use our drugs, we will not achieve sufficient product revenues and our business
will suffer.

Even  if  the  FDA  approves  our  drugs,  physicians  and  patients  may  not  accept  and  use  them.  Acceptance  and  use  of  our

drugs will depend on a number of factors including:

·

·

·

·

·

·

·

when the drug is launched into the market and related competition;

approved label claims;

perceptions  by  members  of  the  healthcare  community,  including  physicians,  about  the  safety  and
effectiveness of our drugs;

perceptions by physicians regarding the cost benefit of our product candidates;

published studies demonstrating the cost-effectiveness of our drugs relative to competing products;

availability of reimbursement for our products from government or healthcare payers;

effectiveness of marketing and distribution efforts by us and other licensees and distributors.

Because we expect to rely on sales generated by our current lead product candidates for substantially all of our revenues
for  the  foreseeable  future,  the  failure  of  any  of  these  drugs  to  find  market  acceptance  would  harm  our  business  and  could
require us to seek additional financing.

57

 
 
Our ability to market and promote our product candidates will be determined and limited by FDA-approved labeling.

The  commercial  success  of  our  product  candidates  will  depend  upon  our  ability  to  obtain  FDA-approved  labeling
describing their features. Our failure to achieve FDA approval of product labeling containing such information will prevent us
from  advertising  and  promoting  the  key  features  of  our  product  candidates  in  order  to  differentiate  them  from  other  similar
products. This would make our products less competitive in the market.

Risks Related to Government Regulation

If we fail to comply with the complex federal, state, local and foreign laws and regulations that apply to our business, we
could suffer severe consequences that could materially and adversely affect our operating results and financial condition.

Our operations are subject to extensive federal, state, local and foreign laws and regulations, all of which are subject to change.
These laws and regulations currently include, among other things:

·

·

·

·

·

·

·

·

·

The  Clinical  Laboratory  Improvement  Amendments  (CLIA)  of  1988,  which  are  United  States  federal
regulatory standards that apply to all clinical laboratory testing performed on humans in the United States,
requires that laboratories obtain certification from the federal government, and state licensure laws;

FDA laws and regulations;

The  Health  Insurance  Portability  and  Accountability  Act  (HIPAA),  which  imposes  comprehensive  federal
standards with respect to the privacy and security of protected health information and requirements for the
use of certain standardized electronic transactions, including penalties for violators, enforcement authority to
state attorneys general and requirements for breach notification;

state  laws  regulating  testing  and  protecting  the  privacy  of  test  results,  as  well  as  state  laws  protecting  the
privacy and security of health information and personal data and mandating reporting of breaches to affected
individuals and state regulators;

the federal anti-kickback law, or the Anti-Kickback Statute, which prohibits knowingly and willfully offering,
paying,  soliciting,  receiving,  or  providing  remuneration,  directly  or  indirectly,  in  exchange  for  or  to  induce
either the referral of an individual, or the furnishing, arranging for, or recommending of an item or service
that is reimbursable, in whole or in part, by a federal health care program;

the federal False Claims Act (FCA), which imposes liability on any person or entity that, among other things,
knowingly  presents,  or  causes  to  be  presented,  a  false  or  fraudulent  claim  for  payment  to  the  federal
government;

the  federal  Civil  Monetary  Penalties  Law,  which  prohibits,  among  other  things,  the  offering  or  transfer  of
remuneration to a Medicare or state health care program beneficiary if the person knows or should know it is
likely  to  influence  the  beneficiary’s  selection  of  a  particular  provider,  practitioner,  or  supplier  of  services
reimbursable by Medicare or a state health care program, unless an exception applies;

other  federal  and  state  fraud  and  abuse  laws,  such  as  anti-kickback  laws,  prohibitions  on  self-referral,  and
false  claims  acts,  which  may  extend  to  services  reimbursable  by  any  third-party  payor,  including  private
insurers;

the federal Physician Payments Sunshine Act, which requires manufacturers to track and report to the federal
government  certain  payments  and  other  transfers  of  value  made  to  physicians  and  teaching  hospitals  and
ownership or investment interests held by physicians and their immediate family members; 

58

 
 
·

·

·

Section  216  of  the  federal  Protecting  Access  to  Medicare  Act  of  2014  (PAMA),  which  requires  applicable
laboratories to report private payer data in a timely and accurate manner beginning in 2017 and every three
years thereafter (and in some cases annually);

state laws that impose reporting and other compliance-related requirements; and 

similar  foreign  laws  and  regulations  that  will  apply  to  us  in  foreign  countries  in  which  we  may  choose  to
operate in the future. 

Enacted and future legislation may increase the difficulty and cost for us to commercialize our product candidates and may
reduce the prices we are able to obtain for our product candidates.

Legislative and regulatory changes and future changes regarding the healthcare system could prevent or delay marketing
approval of our product candidates, restrict or regulate post-approval activities or affect our ability to profitably sell any product
candidates for which we obtain marketing approval.

In the U.S., the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (the Medicare Modernization
Act) established the Medicare Part D program and provided authority for limiting the number of drugs that will be covered in
any  therapeutic  class  thereunder.  The  Medicare  Modernization  Act,  including  its  cost  reduction  initiatives,  could  limit  the
coverage  and  reimbursement  rate  that  we  receive  for  any  of  our  approved  products.  Private  payors  may  follow  Medicare
coverage policies and payment limitations in setting their own reimbursement rates resulting in similar limits in payments from
private payors.

The  Patient  Protection  and  Affordable  Care  Act,  as  amended  by  the  Health  Care  and  Education  Reconciliation  Act,  or
collectively, the Affordable Care Act, among other things, imposes a significant annual fee on companies that manufacture or
import branded prescription product candidates. It also contains substantial provisions intended to, among other things, broaden
access to health insurance, reduce or constrain the growth of health care spending, enhance remedies against healthcare fraud
and abuse, add new transparency requirements for the healthcare and health insurance industries, and impose additional health
policy reforms, any of which could have a material adverse effect on our business. A significant number of provisions are not
yet, or have only recently become, effective, but the Affordable Care Act may result in downward pressure on pharmaceutical
pricing, especially under the Medicare program, and may also increase our regulatory burdens and operating costs.

The Affordable Care Act, as well as other healthcare reform measures that have been and may be adopted in the future,
may  result  in  more  rigorous  coverage  criteria  and  in  additional  downward  pressure  on  the  price  that  we  receive  for  any
approved  product,  and  could  seriously  harm  our  future  revenues.  Any  reduction  in  reimbursement  from  Medicare  or  other
government  programs  may  result  in  a  similar  reduction  in  payments  from  private  payors.  The  implementation  of  cost
containment  measures  or  other  healthcare  reforms  may  compromise  our  ability  to  generate  revenue,  attain  profitability  or
commercialize our products.

The  Affordable  Care  Act  is  a  highly  complex  piece  of  legislation  that  continues  to  evolve.  We  do  not  and  cannot

understand or anticipate the full impact and potential implications of the Affordable Care Act on our business or on our drugs.

59

 
 
Our relationships with customers and payors will be subject to applicable anti-kickback, fraud and abuse, transparency, and
other  healthcare  laws  and  regulations,  which  could  expose  us  to  criminal  sanctions,  civil  penalties,  exclusion  from
government healthcare programs, contractual damages, reputational harm, administrative burdens, and diminished profits
and future earnings.

Healthcare providers, physicians and payors play a primary role in the recommendation and prescription of any product
candidates for which we may obtain marketing approval. Our future arrangements with payors and customers 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 market, sell and distribute any product candidates for which we may obtain
marketing approval. Even though we do not and will not control referrals of healthcare services or bill directly to Medicare,
Medicaid  or  other  third-party  payors,  federal  and  state  healthcare  laws  and  regulations  pertaining  to  fraud  and  abuse  and
patients'  rights  are  and  will  be  applicable  to  our  business.  Restrictions  under  applicable  federal,  state  and  foreign  healthcare
laws and regulations may affect our ability to operate and expose us to areas of risk, including:

·

·

·

·

·

·

the federal Anti-Kickback Statute, which prohibits, among other things, 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 federal and state healthcare programs such as Medicare and Medicaid. A
person or entity does not need to have actual knowledge of the statute or specific intent to violate it in order
to have committed a violation;

the  FCA,  which  imposes  criminal  and  civil  penalties,  including  through  civil  whistleblower  or  qui  tam
actions,  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. In addition, the government may assert that a
claim including items and services resulting from a violation of the federal Anti-Kickback Statute constitutes
a false or fraudulent claim for purposes of the FCA;

HIPAA, which imposes criminal and civil liability for executing a scheme to defraud any healthcare benefit
program  or  making  false  statements  relating  to  healthcare  matters.  Similar  to  the  federal  Anti-Kickback
Statute, a person or entity does not need to have actual knowledge of the statute to defraud any healthcare
benefit program or specific intent to violate it in order to have committed a violation;

HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009
and  its  implementing  regulations,  which  also  imposes  obligations  on  certain  covered  entity  healthcare
providers, health plans, and healthcare clearinghouses as well as their business associates that perform certain
services involving the use or disclosure of individually identifiable health information, including mandatory
contractual  terms,  with  respect  to  safeguarding  the  privacy,  security  and  transmission  of  individually
identifiable health information;

federal  laws  requiring  drug  manufacturers  to  report  information  related  to  payments  and  other  transfers  of
value made to physicians and other healthcare providers, as well as ownership or investment interests held by
physicians  and  their  immediate  family  members,  including  under  the  federal  Open  Payments  program,
commonly known as the Sunshine Act, as well as other state and foreign laws regulating marketing activities;
and

state and foreign equivalents of each of the above laws, including state anti-kickback and false claims laws,
which  may  apply  to  sales  or  marketing  arrangements  and  claims  involving  healthcare  items  or  services
reimbursed by non-governmental payors, including private insurers; state laws which require pharmaceutical
companies  to  comply  with  the  pharmaceutical  industry's  voluntary  compliance  guidelines  and  the  relevant
compliance guidance promulgated by the federal government or otherwise restricting payments that may be
made  to  healthcare  providers;  and  state  and  foreign  laws  governing  the  privacy  and  security  of  health
information in certain circumstances, many of which differ from each other in significant ways and often are
not preempted by HIPAA, thus complicating compliance efforts.

60

 
 
Efforts  to  ensure  that  our  business  arrangements  with  third  parties  will  comply  with  applicable  healthcare  laws  and
regulations  will  involve  substantial  costs.  Nonetheless,  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, imprisonment, exclusion from participation in government funded healthcare programs, such as Medicare and
Medicaid, and the curtailment or restructuring of our operations.

Government agencies may establish and promulgate usage guidelines that could limit the use of our product candidates.

Government agencies, professional and medical societies, and other groups may establish usage guidelines that apply to
our product candidates. These guidelines could address such matters as usage and dose, among other factors. Application of
such guidelines could limit the clinical use or commercial appeal of our product candidates.

Risks Relating to Manufacturing

We do not own any manufacturing facilities and we rely on third-party commercial drug manufacturers for clinical drug
supply.

We  do  not  own  any  manufacturing  facilities.  We  plan  to  continue  to  outsource  formulation,  manufacturing  and  related
activities. We  rely  on  a  limited  number  of  third-party  suppliers  to  formulate,  manufacture,  fill,  label,  ship  or  store  all  of  our
product candidates. These suppliers must comply with current cGMP regulations enforced by the FDA and other government
agencies,  and  are  subject  to  ongoing  periodic  unannounced  inspection,  including  preapproval  inspections  by  the  FDA  and
corresponding state and foreign government agencies to ensure strict compliance with cGMP and other government regulations
and corresponding foreign standards. These manufacturers may subsequently be stopped from producing, storing, shipping or
testing our drug products due to their non-compliance with federal, state or local regulations. We do not have control over our
suppliers’ compliance with these regulations and standards. We cannot control decisions by our suppliers that affect their ability
or willingness to continue to supply us on acceptable terms, or at all. We may not be able to replace a commercial supplier on
commercially reasonable terms, or at all. Replacing any of our commercial suppliers would be expensive and time consuming.
Failure by any of our suppliers to perform as expected could delay or prevent commercialization of our product candidates or
result in shortages, cost overruns, or other problems and would materially harm our business.

Item 1B.     Unresolved Staff Comments

None.

Item 2.     Properties

We lease approximately 6,000 square feet of office space pursuant to a non-cancelable operating lease in Austin, TX that

expires December 31, 2020. We believe that our facilities are adequate and suitable for our current needs.

Item 3.     Legal Proceedings

From time to time, we may become involved in litigation or other legal proceedings. We are not currently a party to
any litigation or legal proceedings that, in the opinion of our management, are likely to have a material adverse effect on our
business. Regardless of outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion
of management resources, and other factors.

Item 4.     Mine Safety Disclosures

Not applicable.

61

 
 
PART II

Item 5.    Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Price of Dividends of the Registrants Common Equity and Related Stockholder Matters

Our common stock is quoted on Nasdaq, under the symbol "SAVA."

We  currently  expect  to  retain  future  earnings,  if  any,  for  use  in  the  operation  and  expansion  of  our  business  and,
notwithstanding  our  special  non-dividend  distributions  in  December  2012  (of  $0.75  per  share  of  common  stock  totaling
$34.0 million) and December 2010 (of $2.00 per share of common stock totaling $85.7 million), we have not paid and do not
anticipate paying any cash dividends in the foreseeable future. As of January 21, 2020, there were approximately 30 registered
holders of record of our common stock.

Item 6.    Selected Financial Data

Not applicable.

62

 
 
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

Cassava  Sciences,  Inc.  is  a  clinical  stage  biotechnology  company.  Our  mission  is  to  detect  and  treat  neurodegenerative
diseases, such as Alzheimer’s disease. Our novel science is based on stabilizing – but not removing – a critical protein in the
brain.

Over the past 10 years, we have combined state-of-the-art technology with new insights in neurobiology to develop novel
solutions  for  Alzheimer’s  disease  and  other  neurodegenerative  diseases.  Our  strategy  is  to  leverage  our  unique
scientific/clinical platform to develop a first-in-class program for treating neurodegenerative diseases, such as Alzheimer’s.  

We currently have two clinical-stage biopharmaceutical assets under development:

·

·

our lead therapeutic product candidate, called PTI-125, for the treatment of Alzheimer’s disease; and

our lead investigational diagnostic product candidate, called SavaDx, to detect Alzheimer’s disease from a small
sample of blood, possibly years before the overt appearance of clinical symptoms.

Our scientific approach for the treatment of Alzheimer’s disease seeks to simultaneously improve both neurodegeneration
and neuroinflammation. We believe our ability to improve multiple vital functions in the brain represents a new, different and
crucial approach to address Alzheimer’s disease.

Our  lead  therapeutic  product  candidate,  PTI-125,  is  a  proprietary  small  molecule  (oral)  drug.  PTI-125  targets  an  altered
form of a protein called filamin A (FLNA) in the Alzheimer’s brain. Published studies have demonstrated that the altered form
of FLNA causes neuronal dysfunction, neuronal degeneration and neuroinflammation. 

We  believe  PTI-125  improves  brain  health  by  reverting  altered  FLNA  back  to  its  native,  healthy  confirmation,  thus
countering the downstream toxic effects of altered FLNA. We have generated and published experimental and clinical evidence
of improved brain health with PTI-125. Importantly, PTI-125 is not dependent on clearing amyloid from the brain. Since PTI-
125 has a unique mechanism of action, we believe its potential therapeutic effects may be additive or synergistic with that of
other therapeutic candidates aiming to treat neurodegeneration.

PTI-125  has  demonstrated  a  multitude  of  beneficial  effects  in  animal  models  of  disease,  including  normalizing

neurotransmission, decreasing neuroinflammation, suppressing neurodegeneration, and restoring memory and cognition. 

In  2019,  we  completed  a  small,  first-in-human,  clinical-proof-of-concept,  open-label  Phase  2a  study  of  PTI-125  in  the
U.S., with substantial support from the National Institute on Aging (NIA), a division of the NIH. Treatment with PTI-125 for 28
days  significantly  improved  key  biomarkers  of  Alzheimer’s  pathology,  neurodegeneration  and  neuroinflammation  (p<0.001).
 Biomarkers effects were seen in all patients in both CSF and plasma. To our knowledge, no other drug candidate has improved
an entire panel of biomarkers of in patients with Alzheimer’s disease. 

A  confirmatory,  randomized,  placebo-controlled,  multi-center  Phase  2b  study  of  PTI-125  in  Alzheimer’s  disease is  on-

going as of March 2020. We expect to announce Phase 2b results in approximately mid-2020.

Our  diagnostic  effort,  called  SavaDx,  is  an  early-stage  program  focused  on  detecting  Alzheimer’s  disease  from  a  small
sample  of  blood,  possibly  years  before  the  overt  appearance  of  clinical  symptoms.  We  are  developing  SavaDx  as  a  fast,
accurate and quantitative blood-based investigational biomarker/diagnostic to detect and monitor Alzheimer's disease. The goal
is to make the detection of Alzheimer’s disease as simple as getting a blood test. 

Alzheimer’s disease is a progressive neurodegenerative disorder that affects cognition, function and behavior. An estimated
5.8  million  Americans  are  living  with  Alzheimer’s  disease  in  2020,    according  to  the  Alzheimer’s  Association,  a  non-profit
organization. There are no disease-modifying drug therapies to treat the disease.  

63

 
 
PTI-125 and SavaDx were both discovered and designed in-house and were characterized by our academic collaborators
during research activities that were conducted from approximately 2008 to date. We own exclusive, worldwide rights to these
drug assets and related technologies, without royalty obligations to any third party. Our patent protection in this area currently
runs through 2034. 

Financial Overview

We  have  yet  to  generate  any  revenues  from  product  sales.  We  have  an  accumulated  deficit  of  $168.6  million  at
December 31, 2019. These losses have resulted principally from costs incurred in connection with research and development
activities,  salaries  and  other  personnel-related  costs  and  general  corporate  expenses.  Research  and  development  activities
include costs of preclinical and clinical studies as well as clinical supplies associated with our product candidates. Salaries and
other  personnel-related  costs  include  non-cash  stock-based  compensation  associated  with  options  and  other  equity  awards
granted to employees and non-employees. Our operating results may fluctuate substantially from period to period as a result of
the  timing  of  preclinical  activities,  enrollment  rates  of  clinical  studies  for  our  product  candidates  and  our  need  for  clinical
supplies.

We believe that our cash and cash equivalents at December 31, 2019, will enable us to fund our operating expenses for at
least  the  next  12  months.  In  addition,  we  may  seek  in  the  future  to  fund  our  operations  through  additional  public  or  private
equity  or  debt  financings  or  other  sources.  However,  we  may  be  unable  to  raise  additional  funds  or  enter  into  such  other
arrangements when needed on favorable terms or at all. If we are unable to obtain financing or reach profitability, the related
lack of liquidity will have a material adverse effect on our operations and future prospects.

We expect to continue to use significant cash resources in our operations for the next several years. Our cash requirements

for operating activities and capital expenditures may increase substantially in the future as we:

·

·

·

·

·

·

·

conduct preclinical and clinical studies for our product candidates;

seek regulatory approvals for our product candidates;

develop, formulate, manufacture and commercialize our product candidates;

implement additional internal systems and develop new infrastructure;

acquire or in-license additional products or technologies, or expand the use of our technology;

maintain, defend and expand the scope of our intellectual property; and

hire additional personnel.

Product  revenue  will  depend  on  our  ability  to  receive  regulatory  approvals  for,  and  successfully  market,  our  product
candidates.  If  our  development  efforts  result  in  regulatory  approval  and  successful  commercialization  of  our  product
candidates, we will generate revenue from direct sales of our drugs and/or, if we license our drugs to future collaborators, from
the receipt of license fees and royalties from sales of licensed products. We conduct our research and development programs
through  a  combination  of  internal  and  collaborative  programs.  We  rely  on  arrangements  with  universities,  our  collaborators,
CROs and clinical research sites for a significant portion of our product development efforts.

64

 
 
The  following  table  summarizes  expenses  which  have  been  reduced  for  reimbursements  received  for  NIH  grants  (in

thousands):

Research and development expenses - gross
Less:  Reimbursement from NIH grants
 Research and development expenses - net

Twelve months ended

December 31,

2019

2018

$

$

6,297 
4,729 
1,568 

$

$

6,016 
3,047 
2,969 

Research  and  development  expenses  include  compensation,  contractor  fees  and  supplies  as  well  as  allocated  common
costs.  Contractor  fees  and  supplies  generally  include  expenses  for  preclinical  studies  and  clinical  studies  and  costs  for
formulation  and  manufacturing  activities.  Other  common  costs  include  the  allocation  of  common  costs  such  as  facilities.
During the year ended December 31, 2019 and 2018, we received $4.7 million and $3.0 million from research grants from the
NIH. These reimbursements were recorded as a reduction to our research and development expenses.

Our technology has been applied across certain of our portfolio of product candidates. Data, know-how, personnel, clinical
results, research results and other matters related to the research and development of any one of our product candidates also
relate  to,  and  further  the  development  of,  our  other  product  candidates.  As  a  result,  costs  allocated  to  a  specific  product
candidate may not necessarily reflect the actual costs surrounding research and development of such product candidate due to
cross application of the foregoing.

Estimating  the  dates  of  completion  of  clinical  development,  and  the  costs  to  complete  development,  of  our  product
candidates  would  be  highly  speculative,  subjective  and  potentially  misleading.  Pharmaceutical  products  take  a  significant
amount  of  time  to  research,  develop  and  commercialize.  The  clinical  study  portion  of  the  development  of  a  new  drug  alone
usually spans several years. We expect to reassess our future research and development plans based on our review of data we
receive  from  our  current  research  and  development  activities.  The  cost  and  pace  of  our  future  research  and  development
activities are linked and subject to change.

Critical Accounting Policies

The preparation of our financial statements in accordance with U.S. generally accepted accounting principles requires us to
make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and interest income in
our  financial  statements  and  accompanying  notes.  We  evaluate  our  estimates  on  an  ongoing  basis,  including  those  estimates
related  to  agreements  and  research  collaborations.  We  base  our  estimates  on  historical  experience  and  various  other
assumptions  that  we  believe  to  be  reasonable  under  the  circumstances,  the  results  of  which  form  the  basis  for  making
judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results

65

 
 
 
may  differ  from  these  estimates  under  different  assumptions  or  conditions.  The  following  items  in  our  financial  statements
require significant estimates and judgments:

·

·

·

Stock-based compensation. We recognize non-cash expense for the fair value of all stock options and other
share-based  awards.  We  use  the  Black-Scholes  option  valuation  model  to  calculate  the  fair  value  of  stock
options, using the single-option award approach and straight-line attribution method. The Company adopted
ASU No. 2018-07, Compensation—Stock Compensation (Topic 718), Improvements to Nonemployee Share-
Based  Payment  Accounting,  on  January  1,  2019.  Accordingly,  for  all  options  granted,  it  recognizes  the
resulting fair value as expense on a straight-line basis over the vesting period of each respective stock option,
generally four years.

We  have  granted  share-based  awards  that  vest  upon  achievement  of  certain  performance  criteria,  or
performance  awards.  We  multiply  the  number  of  performance  awards  by  the  fair  market  value  of  our
common stock on the date of grant to calculate the fair value of each award. We estimate an implicit service
period for achieving performance criteria for each award. We recognize the resulting fair value as expense
over  the  implicit  service  period  when  we  conclude  that  achieving  the  performance  criteria  is  probable.  We
periodically review and update as appropriate our estimates of implicit service periods and determinations on
achievement  of  the  performance  criteria.  Performance  awards  vest  and  common  stock  is  issued  upon
achievement of the performance criteria.

Income Taxes. The Company accounts for income taxes under the asset and liability method.  Deferred tax
assets  and  liabilities  are  recognized  for  the  estimated  future  tax  consequences  attributable  to  differences
between  the  financial  statement  carrying  amounts  of  existing  assets  and  liabilities  and  their  respective  tax
bases.  Deferred tax balances are adjusted to reflect tax rates based on currently enacted tax laws, which will
be  in  effect  in  the  years  in  which  the  temporary  differences  are  expected  to  reverse.    The  Company  has
accumulated  significant  deferred  tax  assets  that  reflect  the  tax  effects  of  net  operating  loss  and  tax  credit
carryovers  and  temporary  differences  between  the  carrying  amounts  of  assets  and  liabilities  for  financial
reporting purposes and the amounts used for income tax purposes. Realization of certain deferred tax assets is
dependent  upon  future  earnings.  The  Company  is  uncertain  about  the  timing  and  amount  of  any  future
earnings. Accordingly, the Company offsets these deferred tax assets with a valuation allowance.

The  Company  accounts  for  uncertain  tax  positions  in  accordance  with  ASC  740,  “Income  Taxes”,  which
clarifies the accounting for uncertainty in tax positions. These provisions require recognition of the impact of
a  tax  position  in  the  Company’s  financial  statements  only  if  that  position  is  more  likely  than  not  of  being
sustained upon examination by taxing authorities, based on the technical merits of the position. Any interest
and penalties related to uncertain tax positions will be reflected as a component of income tax expense.

Research  Contract  Costs  and  Accruals.  The  Company  has  entered  into  various  research  and  development
contracts with research institutions and other third-party vendors. These agreements are generally cancelable,
and related payments are recorded as research and development expenses as incurred. The Company records
accruals  for  estimated  ongoing  research  costs.  When  evaluating  the  adequacy  of  the  accrued  liabilities,  the
Company analyzes progress of the studies including the phase or completion of events, invoices received and
contracted costs. Significant judgments and estimates are made in determining the accrued balances at the end
of any reporting period. Actual results could differ from the Company’s estimates. The Company’s historical
accrual estimates have not been materially different from the actual costs.

Recent Accounting Pronouncements

In  December  2019,  the  FABS  issued  ASU  No.  2019-12,  Income  Taxes  (Topic  740)  Simplifying  Accounting  for  Income
Taxes  as  part  of  its  initiative  to  reduce  complexity  in  the  accounting  standards.  The  guidance  amended  certain  disclosure
requirements  that  had  become  redundant,  outdated  or  superseded.  Additionally,  this  guidance  amends  accounting  for  the
interim period effects of changes in tax laws or rates, and simplifies aspects of the accounting for franchise taxes. The guidance
is  effective  for  annual  periods  beginning  after  December  15,  2020,  and  is  applicable  for  the  Company  in  fiscal  2021.  Early
adoption  is  permitted.  The  Company  does  not  anticipate  that  this  guidance  will  have  a  material  impact  on  its  consolidated
financial statements.

66

 
 
In  November  2018,  the  FASB  issued  ASU  No.  2018-18,  Collaborative  Arrangements  (Topic  808):  Clarifying  the
Interaction  Between  Topic  808  and  Topic  606.  The  amendments  in  this  update  provide  guidance  on  how  to  assess  whether
certain  transactions  between  collaborative  arrangement  participants  should  be  accounted  for  within  the  revenue  recognition
standard. The amendments in this update are effective for interim and annual periods for the Company beginning on January 1,
2020. The Company does not anticipate that this guidance will have a material impact on its consolidated financial statements.

In  August  2018,  the  FASB  issued  ASU  No.  2018-13,  Fair  Value  Measurement  (Topic  820)  -  Disclosure  Framework  -
Changes  to  the  Disclosure  Requirements  for  Fair  Value  Measurement  (ASU  2018-13),  which  is  designed  to  improve  the
effectiveness of disclosures by removing, modifying and adding disclosures related to fair value measurements. ASU 2018-13
is  effective  for  fiscal  years  beginning  after  December  15,  2019,  including  interim  periods  within  those  fiscal  years.  The
Company is currently evaluating the impact of ASU 2018-13 on its consolidated financial statements.

Results of Operations

Research and Development Expense

Research  and  development  expense  consist  primarily  of  costs  of  drug  development  work  associated  with  our  product

candidates, including:

·

·

·

·

preclinical testing,

clinical studies,

clinical supplies and related formulation and design costs, and

compensation and other personnel-related expenses.

Research  and  development  expenses  decreased  to  $1.6  million  in  2019  from  $3.0  million  in  2018,  representing  a  47%
decrease. This decrease was attributable to reimbursements of $4.7 million received from research grants in 2019 from the NIH
and recorded as a reduction to research and development expense, as compared to $3.0 million in recorded reimbursements in
2018, and decreased non-cash stock-related compensation expenses of $0.5 million in 2019 compared to $1.0 million in 2018,
offset by $0.8 million in increased research and development expenses compared to the prior year due to costs incurred for our
Phase 2 clinical programs.

We expect research and development expense to fluctuate in future periods as we continue our development efforts. We
expect our development efforts to result in our product candidates progressing through various stages of clinical studies. Our
research  and  development  expenses  may  fluctuate  from  period  to  period  due  to  the  timing  and  scope  of  our  development
activities and the results of clinical studies and preclinical studies.

General and Administrative Expense

General  and  administrative  expenses  consist  of  personnel  costs,  allocated  expenses  and  other  expenses  for  outside
professional  services,  including  legal,  human  resources,  audit  and  accounting  services.  Personnel  costs  consist  of  salaries,
bonus,  benefits  and  stock-based  compensation.  Allocated  expenses  consist  primarily  of  facility  costs.  We  incur  expenses
associated with operating as a public company, including expenses related to compliance with the rules and regulations of the
SEC  and  Nasdaq,  additional  insurance  expenses,  additional  audit  expenses,  investor  relations  activities,  SOX  compliance
expenses  and  other  administrative  expenses  and  professional  services.  General  and  administrative  expense  decreased  to
$3.4 million in 2019 from $3.7 million in 2018, representing an 8% decrease. This was due primarily to decreases in non-cash
stock-based compensation expenses offsetting an increase in compensation costs from the hiring of a chief financial officer in
October 2018. 

General  and  administrative  expenses  included  non-cash  stock-based  compensation  expenses  of  $0.8  million  in  2019

compared to $1.4 million in 2018. We expect other general and administrative expense for 2020 will be consistent with 2019.

67

 
 
Interest Income

Interest and other income, net, was $328,000 in 2019 compared to $105,000 in 2018. The increase was due primarily to

higher cash balances from our August 2018 stock offering as well as fluctuations in interest rates.

Liquidity and Capital Resources

Since inception, we have financed our operations primarily through public and private stock offerings, payments received
under collaborative agreements and interest earned on our investments. We intend to continue to use our capital resources to
fund  research  and  development  activities,  capital  expenditures,  working  capital  requirements  and  other  general  corporate
purposes. As of December 31, 2019, cash and cash equivalents totaled $23.1 million.

2018 Registered Direct Offering 

On  August  17,  2018,  we  completed  a  common  stock  offering  pursuant  to  which  certain  investors  purchased  8.9  million
shares of common stock and warrants at a price of $1.275 per share. Net proceeds of the offering were approximately $10.1
million after deducting offering expenses. The warrants are exercisable for 8.9 million shares of common stock at $1.25 per
share. Subject to certain ownership limitations described in the warrants, the warrants were immediately exercisable and will
remain  exercisable  until  February  17,  2021.  The  warrants  will  be  exercisable  on  a  “cashless”  basis  in  certain  circumstances,
including while there is no effective registration statement registering the shares of common stock issuable upon exercise of the
warrants at any time until the expiry of the warrants. Such registration statement was declared effective by the SEC on January
30,  2019.  The  warrants  provide  that  holders  will  have  the  right  to  participate  in  any  rights  offering  or  distribution  of  assets
together with the holders of common stock on an as-exercised basis. 

In conjunction with the offering, we also issued to the placement agent warrants to purchase up to 0.3 million shares of
common  stock  (the  Placement  Agent  Warrants).  The  Placement  Agent  Warrants  have  substantially  the  same  terms  as  the
warrants to be issued to the purchasers of common stock, except that their exercise price is $1.59 per share.

During  2019,  we  received  proceeds  of  $5.9  million  from  the  exercise  of  4.6  million  warrants.  Subsequently,  from
December 31, 2019 to March 26, 2020, we received proceeds of $3.6 million from  the  exercise  of  an  additional  2.9  million
warrants.  As  of  March  26,  2020,  1.6  million  warrants  remain  outstanding,  each  with  a  strike  price  of  $1.25  per  share.  All
warrants outstanding expire February 17, 2021.

At the Market (ATM) Common Stock Issuance

On February 8, 2018, we established an at-the-market offering program (ATM) to sell, from time to time, shares of our
common  stock  in  transactions  pursuant  to  a  shelf  registration  statement  that  was  declared  effective  by  the  SEC  on  July  31,
2017.  During  the  year  ended  December  31,  2018,  we  sold  a  total  of  1,763,013  shares  of  our  common  stock  under  the  ATM
Agreement in the open market for net proceeds of $3.9 million.

We sold no shares under the ATM in 2019. We terminated the ATM on February 20, 2020.

NIH Research Grant Awards

Our research has been supported by NIH under multiple research grant awards. Strong, long-term support from NIH

has allowed us to advance our two lead product candidates, PTI-125 and SavaDx, into clinical development.

During the year ended December 31, 2018, we were awarded two NIH grants totaling up to $6.7 million to support

Phase II programs with PTI-125.

In March 2020, we were awarded a supplemental research funding grant from NIH of up to $374,000.  This new, non-

dilutive research funding is intended to strengthen our clinical program of PTI-125 in patients with Alzheimer’s disease.

Use of Cash

68

 
 
Net cash used in operating activities was $2.5 million for 2019, resulting primarily from a $4.6 million net loss incurred
partially  offset  by  $1.3  million  of  stock-based  compensation  expense  and  $0.8  million  from  changes  in  operating  assets  and
liabilities. 

Net cash used in operating activities was $4.8 million for 2018, resulting primarily from a $6.6 million net loss incurred
partially offset by $2.4 million of stock-based compensation expense. Net cash used in operating activities also included $0.7
million of cash used from changes in operating assets and liabilities. 

Cash used in investing activities was $18,000 for 2019 from purchases of computer equipment. There was no cash from

investing activities in 2018.

Net cash provided by financing activities was $5.8 million consisting of $5.9 million proceeds from exercise of common

stock warrants partially offset by $0.1 million in offering expenses related the 2018 sale of common stock and warrants.

Net cash provided by financing activities was $14.1 million in 2018 consisting of net proceeds from the sale of common

stock and warrants in August 2018 as well as the sale of common stock under our At-The-Market facility, as described above. 

Realization of our deferred tax assets is dependent on future earnings, if any. We are uncertain about the timing and amount

of any future earnings. Accordingly, we offset these net deferred tax assets with a valuation allowance.

We lease approximately 6,000 square feet of office space pursuant to a non-cancelable operating lease in Austin, TX that

expires in 2020. Future minimum lease payments are $0.1 million at December 31, 2019.

We  have  an  accumulated  deficit  of  $168.6  million  at  December  31,  2019.  We  expect  our  cash  requirements  to  be
significant  in  the  future.  The  amount  and  timing  of  our  future  cash  requirements  will  depend  on  regulatory  and  market
acceptance of our product candidates and the resources we devote to researching and developing, formulating, manufacturing,
commercializing and supporting our products. We believe that our current resources should be sufficient to fund our operations
for at least the next 12 months. We may seek additional future funding through public or private financing in the future, if such
funding is available and on terms acceptable to us.

Off-balance Sheet Arrangements

As of December 31, 2019, we did not have any relationships with unconsolidated entities or financial partnerships, such as
entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of
facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. In addition, we do not engage in
trading  activities  involving  non-exchange  traded  contracts.  Therefore,  we  are  not  materially  exposed  to  financing,  liquidity,
market or credit risk that could arise if we had engaged in these relationships. We do not have relationships or transactions with
persons or entities that derive benefits from their non-independent relationship with us or our related parties.

Item 7A.    Quantitative and Qualitative Disclosures about Market Risk

Pursuant to Item 305(e) of Regulation S-K, the information called for by Item 7A is not required.

69

 
 
Item 8.    Financial Statements and Supplementary Data

INDEX TO FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations

Statements of Stockholders' Equity 
Statements of Cash Flows
Notes to Financial Statements

70

Page
71
72
73

74
75
76

 
 
 
Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Cassava Sciences, Inc.

Opinion on the Financial Statements

We  have  audited  the  accompanying  balance  sheets  of  Cassava  Sciences,  Inc.  (the  Company)  as  of  December  31,  2019  and
2018, the related statements of operations, stockholders' equity and cash flows for the years then ended, and the related notes
(collectively  referred  to  as  the  “financial  statements”).  In  our  opinion,  the  financial  statements  present  fairly,  in  all  material
respects, the financial position of the Company at December 31, 2019 and 2018, and the results of its operations and its cash
flows for the years then ended, in conformity with U.S. generally accepted accounting principles.

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 Public Company
Accounting  Oversight  Board  (United  States)  (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.  The  Company  is  not  required  to  have,  nor  were  we  engaged  to  perform,  an  audit  of  its  internal  control  over
financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting
but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting.
Accordingly, we express no such opinion.

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.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2002.

Austin, Texas
March 26, 2020

71

 
 
CASSAVA SCIENCES, INC.

BALANCE SHEETS
(In thousands, except share and par value data)

ASSETS

December 31,

2019

2018

Current assets:

Cash and cash equivalents
Other current assets
Total current assets

Operating lease right-of-use assets
Property and equipment, net
Other assets

Total assets

$

$

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
Accounts payable
Accrued development expense
Accrued compensation and benefits
Operating lease liabilities, current
Other current liabilities
Total current liabilities

Operating lease liabilities, non-current

Total liabilities

$

Commitments and contingencies
Stockholders' equity:
Preferred  stock,  $.001  par  value;  10,000,000  shares  authorized,  none  issued  and
outstanding
Common  stock,  $.001  par  value;  120,000,000  shares  authorized;  21,841,810  and
17,219,300 shares issued and outstanding at December 31, 2019 and 2018, respectively  

Additional paid-in capital
Accumulated deficit

Total stockholders' equity
Total liabilities and stockholders' equity

$

See accompanying notes to financial statements.

72

23,081   $
268  
23,349  
90  
47  
 —  
23,486   $

453   $
777  
58  
90  
9  
1,387  
 —  
1,387  

19,807 
233 
20,040 
 —
87 
12 
20,139 

294 
156 
61 
 —
 —
511 
 —
511 

 —  

 —

22  
190,664  
(168,587) 
22,099  
23,486   $

17 
183,567 
(163,956)
19,628 
20,139 

 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
CASSAVA SCIENCES, INC.

STATEMENTS OF OPERATIONS
(In thousands, except per share data)

Operating expenses:

Research and development, net of grant reimbursement
General and administrative
Total operating expenses

Operating loss
Interest income
Net loss
Net loss per share, basic and diluted
Shares used in computing net loss per share, basic and diluted

Year ended December 31,

2019

2018

1,568   $
3,391  
4,959  
(4,959)
328  
(4,631)  $
(0.27)  $

17,412  

2,969 
3,693 
6,662 
(6,662)
105 
(6,557)
(0.61)
10,682 

  $

  $
  $

See accompanying notes to financial statements.

73

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CASSAVA SCIENCES, INC.

STATEMENTS OF STOCKHOLDERS' EQUITY
(in thousands)

Balance at December 31, 2017

Non-cash stock-related compensation for:

Stock options for employees
Stock options for non-employees
Issuance of common stock and warrants

Net loss

Balance at December 31, 2018

Non-cash stock-related compensation for:

Stock options for employees
Stock options for non-employees
Issuance  costs  from  2018  sale  of  common  stock
and warrants
Issuance of common stock pursuant to exercise of
warrants

Net loss

Balance at December 31, 2019

  Accumulated    
other

Total

Common stock

  Additional  comprehensive  Accumulated   stockholders'

Shares

6,595,509  $

Par
value

paid-in
capital
7  $ 167,091  $

income

deficit

 —  $(157,399) $

equity
9,699 

 —   
 —   
10,623,791   
 —   
17,219,300  $

2,352   
 —   
 —   
36   
10    14,088   
 —   
 —   
17  $ 183,567  $

2,352 
 —   
 —   
 —   
36 
 —   
 —    14,098 
 —   
 —   
(6,557)
(6,557)  
 —  $(163,956) $ 19,628 

 —   
 —   

 —   
 —   

1,287   
9   

 —   
 —   

 —   
 —   

1,287 
9 

 —   

 —   

(60)  

 —   

 —   

(60)

4,622,510   
 —   
21,841,810  $

5,861   
5   
 —   
 —   
22  $ 190,664  $

5,866 
 —   
 —   
 —   
(4,631)
(4,631)  
 —  $(168,587) $ 22,099 

See accompanying notes to financial statements.

74

 
    
    
    
    
    
 
    
    
    
    
    
 
    
    
    
    
    
 
   
 
   
 
   
 
   
 
   
 
 
   
 
   
 
   
 
   
 
   
 
 
   
 
   
 
 
   
 
 
  
 
 
  
 
 
 
 
 
 
 
   
   
   
   
   
 
   
   
   
   
   
 
 
    
    
    
    
    
 
 
 
CASSAVA SCIENCES, INC.

STATEMENTS OF CASH FLOWS
(In thousands)

Cash flows from operating activities:

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

Year ended December 31,

2019

2018

$

(4,631)  $

(6,557)

Non-cash stock-based compensation
Depreciation and amortization
Changes in operating assets and liabilities:

Other current assets
Accounts payable
Accrued development expense
Accrued compensation and benefits
Other current liabilities

Net cash used in operating activities

Cash flows from investing activities:
Purchases of property and equipment

Net cash used in investing activities

Cash flows from financing activities:

Issuance costs from 2018 sale of common stock and warrants
Proceeds from sale of common stock and warrants, net
Proceeds from exercise of common stock warrants, net

Net cash provided by financing activities

Net increase in cash and cash equivalents
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period

$

See accompanying notes to financial statements.

75

1,296  
58  

(23) 
159  
621  
(3) 
9  
(2,514) 

(18) 
(18) 

(60) 
 —  
5,866  
5,806  
3,274  
19,807  
23,081   $

2,388 
69 

(49)
(130)
(243)
(248)
 —
(4,770)

 —
 —

 —
14,098 
 —
14,098 
9,328 
10,479 
19,807 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CASSAVA SCIENCES, INC.
NOTES TO FINANCIAL STATEMENTS

1.  General and Liquidity

Cassava Sciences, Inc.  (the  Company),  formerly  known  as  Pain  Therapeutics,  Inc.,  develops  proprietary  drugs  that
offer  significant  improvements  to  patients  and  healthcare  professionals.  The  Company  generally  focuses  its  drug
development efforts on disorders of the nervous system.

Liquidity 

The  Company  has  incurred  significant  net  losses  and  negative  cash  flows  since  inception,  and  as  a  result  has  an
accumulated deficit of $168.6 million at December 31, 2019.  The Company expects its cash requirements to be significant
in the future. The amount and timing of its future cash requirements will depend on regulatory and market acceptance of
the Company’s product candidates and the resources it devotes to researching and developing, formulating, manufacturing,
commercializing and supporting its products. The Company may seek additional future funding through public or private
financing in the future, if such funding is available and on terms acceptable to the Company.

2.  Summary of Significant Accounting Policies

Use of Estimates

The  preparation  of  financial  statements  in  conformity  with  accounting  principles  generally  accepted  in  the  United
States requires that management make estimates and assumptions that affect the reported amounts of assets and liabilities
and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amount of revenue
earned and expenses incurred during the reporting period. Actual results could differ from those estimates.

Proceeds from Grants

In 2019,  the Company received $4.7 million of reimbursement from the National  Institutes  of  Health  and  National
Institute on Drug Abuse and $3.0 million in 2018. The Company records the proceeds from these grants as reductions to its
research and development expenses.

Cash and Cash Equivalents and Concentration of Credit Risk

The  Company  invests  in  cash  and  cash  equivalents  and,  in  the  past,  marketable  securities.  The Company  considers
highly-liquid financial instruments with original maturities of three months or less to be cash equivalents. Highly liquid
investments  that  are  considered  cash  equivalents  include  money  market  funds,  certificates  of  deposit,  treasury  bills  and
commercial paper. The carrying value of cash equivalents approximates fair value due to the short-term maturity of these
securities.

The  Company’s  investment  policy  allows  for  investments  in  marketable  securities  with  active  secondary  or  resale
markets,  establishes  diversification  and  credit  quality  requirements  and  limits  investments  by  maturity  and  issuer.  The
Company maintains its investments at one financial institution.

76

 
 
 
 
 
Fair Value Measurements

The Company reports its cash and cash equivalents at fair value as Level 1, Level 2 or Level 3 using the following

inputs:

·

·

·

Level  1  includes  quoted  prices  in  active  markets.  The Company bases  the  fair  value  of  money  market
funds and U.S. treasury securities on Level 1 inputs.

Level 2 includes significant observable inputs, such as quoted prices for identical or similar investments,
or  other  inputs  that  are  observable  and  can  be  corroborated  by  observable  market  data  for  similar
securities. The Company uses  market  pricing  and  other  observable  market  inputs  obtained  from  third-
party providers. It uses the bid price to establish fair value where a bid price is available. The Company
bases the fair value of its certificates of deposit and marketable securities, if any, on Level 2 inputs.

Level  3  includes  unobservable  inputs  that  are  supported  by  little  or  no  market  activity.  The Company
does not have any investments where the fair value is based on Level 3 inputs.

If  a  financial  instrument  uses  inputs  that  fall  in  different  levels  of  the  hierarchy,  the  instrument  will  be  categorized
based  upon  the  lowest  level  of  input  that  is  significant  to  the  fair  value  calculation.  Certificates  of  deposit  are  included
within  cash  equivalents  as  a  Level  2  input.  The  fair  value  of  the  remainder  of  cash  and  cash  equivalents  was  based  on
Level 1 inputs at December 31, 2019 and 2018.

Business Segments

The  Company  reports  segment  information  based  on  how  it  internally  evaluates  the  operating  performance  of  its
business units, or segments. The Company’s operations are confined to one business segment: the development of novel
drugs and diagnostics.

Stock-based Compensation 

The Company recognizes non-cash expense for the fair value of all stock options and other share-based awards. The
Company uses  the  Black-Scholes  option  valuation  model  to  calculate  the  fair  value  of  stock  options,  using  the  single-
option  award  approach  and  straight-line  attribution  method.  This  model  requires  the  input  of  subjective  assumptions
including expected stock price volatility, expected life and estimated forfeitures of each award. These assumptions consist
of  estimates  of  future  market  conditions,  which  are  inherently  uncertain,  and  therefore,  are  subject  to  management's
judgment.

The  Company  adopted  ASU  No.  2018-07,  Compensation—Stock  Compensation  (Topic  718),  Improvements  to
Nonemployee Share-Based Payment Accounting, on January 1, 2019. Accordingly, for all options granted, it recognizes the
resulting fair value as expense on a straight-line basis over the vesting period of each respective stock option, generally
four years. 

The  Company  has  granted  share-based  awards  that  vest  upon  achievement  of  certain  performance  criteria,  or
performance awards. The Company multiplies the number of performance awards by the fair market value of its common
stock on the date of grant to calculate the fair value of each award. It estimates an implicit service period for achieving
performance criteria for each award. The Company recognizes the resulting fair value as expense over the implicit service
period  when  it  concludes  that  achieving  the  performance  criteria  is  probable.  The  Company  periodically  reviews  and
updates  as  appropriate  its  estimates  of  implicit  service  periods  and  conclusions  on  achieving  the  performance  criteria.
Performance awards vest and common stock is issued upon achievement of the performance criteria.

77

 
 
 
Net Loss per Share

Basic net loss per share is computed on the basis of the weighted-average number of common shares outstanding for
the  reporting  period.  Diluted  net  loss  per  share  is  computed  on  the  basis  of  the  weighted-average  number  of  common
shares outstanding plus dilutive potential common shares outstanding using the treasury-stock method. Potential dilutive
common shares consist of outstanding equity awards and warrants. There is no difference between the Company’s net loss
and comprehensive loss. The numerators and denominators in the calculation of basic and diluted net loss per share were
as follows (in thousands):

Numerator:
Net loss
Denominator:

Shares used in computing net loss per share, basic and diluted

Net loss per share, basic and diluted

Year ended December 31,

2019

2018

$

$

(4,631)  $

(6,557) 

17,412  

(0.27)  $

10,682  
(0.61) 

The  Company  excluded  weighted  equity  awards  and  warrants  outstanding  to  purchase  common  stock  from  the
calculation  of  diluted  net  loss  per  share  because  the  effect  of  including  these  shares  in  this  calculation  would  be  anti-
dilutive.

The potential shares of common stock that have been excluded from the diluted loss per share calculation above

for the years ended December 31, 2019 and 2018 were as follows:

Stock options
Stock warrants
 Potential common shares

Fair Value of Financial Instruments 

Year ended December 31,
2018
2,864,754 
9,126,601 
11,991,355 

2019
2,932,421 
4,504,091 
7,436,512 

Financial instruments include cash and cash equivalents, accounts payable and accrued liabilities. The estimated
fair value of financial instruments has been determined using available market information or other appropriate valuation
methodologies. However, considerable judgment is required in interpreting market data to develop estimates of fair value;
therefore, the estimates are not necessarily indicative of the amounts that could be realized or would be paid in a current
market exchange. The effect of using different market assumptions and/or estimation methodologies may be material to the
estimated fair value amounts. The carrying amounts of cash and cash equivalents, accounts payable and accrued liabilities
are at cost, which approximates fair value due to the short maturity of those instruments. 

Right-of-use Asset and Liability

The  Company  has  a  single  non-cancelable  operating  lease  for  approximately  6,000  square  feet  of  office  space  in
Austin, Texas that expires on December 31, 2020, which is used for the development of novel drugs. Prior to January 1,
2019, the Company accounted for leases in accordance with the provisions of ASC Topic 840. Under the previous leasing
guidance,  the  Company  expensed  lease  payments  over  the  term  of  the  lease  and  did  not  give  recognition  to  any  lease
related assets or liabilities on its balance sheet.

On January 1, 2019, the Company adopted ASU No. 2016-02, Leases (ASC 842) which, as permitted by ASC Topic
842, is the date of initial application. The core principle of ASC Topic 842 is that a lessee should recognize the assets and
liabilities  that  arise  from  leases. For  operating  leases,  a  lessee  is  required  to  recognize  a  right-of-use  asset  and  a  lease
liability, initially measured at the present value of the lease payments, in the statement of financial position. The Company
recognized a right-of-use asset and operating lease liability upon the adoption of ASU 2016-02 which increased total

78

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
assets  and  total  liabilities  relative  to  such  amounts  prior  to  adoption.  The  Company  utilized  a  discount  rate  of  5.5% to
determine the present value of the future lease payments which represents the Company’s incremental borrowing rate.

The  impact  of  adopting  ASC  842  on  assets  and  liabilities  recorded  as  of  January  1,  2019  were  as  follows  (in

thousands):

Assets
 Operating lease right-of-use assets

Liabilities
 Operating lease liabilities, current
 Operating lease liabilities, non-current

$

$

180 

90 
90 

The Company recorded a reduction of the non-current portion of the lease liability and an offsetting reduction in the
right-of-use  assets  of  $90,000    during  the  year  ended  December  31,  2019.  There  was  no  change  to  the  statement  of
operations during the year ended December 31, 2019 or statement of cash flows during the year ended September 30, 2019
as a result of the adoption of ASC Topic 842. See additional information regarding leases in Note 8 – Commitments and
Contingencies.

Income Taxes

The Company accounts for income taxes under the asset and liability method.  Deferred tax assets and liabilities are
recognized for the estimated future tax consequences attributable to differences between the financial statement carrying
amounts of existing assets and liabilities and their respective tax bases.  Deferred tax balances are adjusted to reflect tax
rates  based  on  currently  enacted  tax  laws,  which  will  be  in  effect  in  the  years  in  which  the  temporary  differences  are
expected  to  reverse.    The  Company  has  accumulated  significant  deferred  tax  assets  that  reflect  the  tax  effects  of  net
operating loss and tax credit carryovers and temporary differences between the carrying amounts of assets and liabilities
for financial reporting purposes and the amounts used for income tax purposes. Realization of certain deferred tax assets is
dependent  upon  future  earnings.  The  Company  is  uncertain  about  the  timing  and  amount  of  any  future  earnings.
Accordingly, the Company offsets these deferred tax assets with a valuation allowance.

The Company accounts for uncertain tax positions in accordance with ASC 740, “Income Taxes”, which clarifies the
accounting  for  uncertainty  in  tax  positions.  These  provisions  require  recognition  of  the  impact  of  a  tax  position  in  the
Company’s financial statements only if that position is more likely than not of being sustained upon examination by taxing
authorities, based on the technical merits of the position. Any interest and penalties related to uncertain tax positions will
be reflected as a component of income tax expense.

Research Contract Costs and Accruals

The Company has entered into various research and development contracts with research institutions and other third-
party vendors. These agreements are generally cancelable, and related payments are recorded as research and development
expenses as incurred. The Company records accruals for estimated ongoing research costs. When evaluating the adequacy
of  the  accrued  liabilities,  the  Company  analyzes  progress  of  the  studies  including  the  phase  or  completion  of  events,
invoices received and contracted costs. Significant judgments and estimates are made in determining the accrued balances
at  the  end  of  any  reporting  period.  Actual  results  could  differ  from  the  Company’s  estimates.  The  Company’s  historical
accrual estimates have not been materially different from the actual costs.

Recent Accounting Pronouncements

The Company reviewed recently issued accounting pronouncements and plan to adopt those that are applicable to it,
and does not expect the adoption of these pronouncements to have a material impact on its financial position, results of
operations or cash flows.

79

 
 
 
 
 
 
 
 
 
 
 
 
In December 2019, the FABS issued ASU No. 2019-12, Income Taxes (Topic 740) Simplifying Accounting for Income
Taxes as part of its initiative to reduce complexity in the accounting standards. The guidance amended certain disclosure
requirements that had become redundant, outdated or superseded. Additionally, this guidance amends accounting for the
interim  period  effects  of  changes  in  tax  laws  or  rates,  and  simplifies  aspects  of  the  accounting  for  franchise  taxes.  The
guidance is effective for annual periods beginning after December 15, 2020, and is applicable for the Company in fiscal
2021. Early adoption is permitted. The Company does not anticipate that this guidance will have a material impact on its
consolidated financial statements.

In  November  2018,  the  FASB  issued  ASU  No.  2018-18,  Collaborative  Arrangements  (Topic  808):  Clarifying  the
Interaction Between Topic 808 and Topic 606. The amendments in this update provide guidance on how to assess whether
certain transactions between collaborative arrangement participants should be accounted for within the revenue recognition
standard.  The  amendments  in  this  update  are  effective  for  interim  and  annual  periods  for  the  Company  beginning  on
January  1,  2020.  The  Company  does  not  anticipate  that  this  guidance  will  have  a  material  impact  on  its  consolidated
financial statements.

In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820) - Disclosure Framework -
Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13), which is designed to improve the
effectiveness  of  disclosures  by  removing,  modifying  and  adding  disclosures  related  to  fair  value  measurements.  ASU
2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years.
The Company is currently evaluating the impact of ASU 2018-13 on its consolidated financial statements.

3.  Collaboration Agreement

The Company had formerly entered into a Development and License Agreement (the License Agreement) with Durect
Corporation around certain controlled-release technology. On March 20, 2019, the Company gave notice of termination for
such License Agreement. This and other actions effectively ended the Company’s development of any product candidates
related to such technology.

4.  Property and Equipment

The  Company’s  property  and  equipment  include  furniture  and  equipment  with  a  purchase  value  of  $1.0  million  at
December  31,  2019  and  2018.  Depreciation  is  recognized  using  the  straight-line  method  over  the  expected  life  of  the
property and equipment. Accumulated depreciation was $0.9 million at December 31, 2019 and 2018.

Subsequent to December 31, 2019, the Company completed the sale, to an independent third party, of fully depreciated

surplus manufacturing equipment and received net proceeds totaling $100,000.

5.  Stockholders' Equity and Stock-Based Compensation

Preferred Stock

The Company’s Board of Directors has the authority to issue preferred stock in one or more series and to fix the rights,

preferences, privileges, restrictions and the number of shares constituting any series or the designation of the series.

2018 Registered Direct Offering 

On August 17, 2018, the Company completed a common stock offering pursuant to which certain investors purchased
8,860,778  shares  of  common  stock  and  warrants  at  a  price  of  $1.275  per  share.  Net  proceeds  of  the  offering  were
approximately  $10.1  million  after  deducting  offering  expenses.  The  warrants  are  exercisable  for  8,860,778  shares  of
common  stock  at  $1.25  per  share.  Subject  to  certain  ownership  limitations  described  in  the  warrants,  the  warrants  are
exercisable  until  February  17,  2021.  The  warrants  will  be  exercisable  on  a  “cashless”  basis  in  certain  circumstances,
including while there is no effective registration statement registering the shares of common stock issuable upon exercise
of the warrants until the expiry of the warrants. Such registration statement was declared effective by the SEC on January
30, 2019. The warrants provide that holders will have the right to participate in any rights offering or distribution of assets
together with the holders of Common Stock on an as-exercised basis.

80

 
 
 
 
 
 
In conjunction with the offering, the Company also issued to the placement agent warrants to purchase up to 265,823
shares  of  common  stock  (the  Placement  Agent  Warrants).  The  Placement  Agent  Warrants  have  substantially  the  same
terms as the warrants to be issued to the purchasers of common stock, except that their exercise price is $1.59 per share.

 During  2019,  the  Company  received  proceeds  of  $5.9  million  from  the  exercise  of  4.6  million  shares  pursuant  to
warrants. Subsequent to December 31, 2019 and through March 26, 2020, the Company received proceeds of $3.6 million
from the exercise of an additional 2.9 million shares pursuant to warrants.

Warrants outstanding as of December 31, 2019 and 2018 were as follows:

Issuance Date

Expiration Date

Exercise Price Per
Share

August 17, 2018 
August 17, 2018 

February 17, 2021 
February 17, 2021 

1.25  
1.59  

Number of Shares Outstanding under Warrant

December 31,

2019

2018

4,496,116  
7,975  
4,504,091  

8,860,778 
265,823 
9,126,601 

The sale of common stock and issuance of warrants qualified for equity treatment under GAAP. The respective values
of the warrants and common stock were calculated using their relative fair values and classified under common stock and
additional paid-in capital. The value ascribed to the warrants is $7.2  million  and  to  the  common  stock  is  approximately
$3.0 million.

The  fair  value  of  these  warrants  was  estimated  using  a  Black-Scholes  model  with  the  following  assumptions:

estimated volatility 136%, risk-free interest rate of 2.65%,  no dividend and an expected life of 2.5 years.

At the Market (ATM) Common Stock Issuance

In  February  2018,  the  Company  established  an  at-the-market  offering  program  (ATM)  to  sell,  from  time  to  time,
shares of Company common stock in transactions pursuant to a shelf registration statement that was declared effective by
the SEC on July 31, 2017. 

There were no sales of common stock under the ATM Agreement during the year ended December 31, 2019. During
the year ended December 31, 2018, the Company  sold  a  total  of  1,763,013 shares of its  common  stock  under  the  ATM
Agreement in the open market for net proceeds of $3.9 million. The Company terminated the ATM on February 20, 2020.

2008 Equity Incentive Plan

Under  the  Company’s  2008  Equity  Incentive  Plan,  or  2008  Equity  Plan,  its  employees,  directors  and  consultants
received share-based awards, including grants of stock options and performance awards. The 2008 Equity Plan expired in
December 2017. Share-based awards generally expire ten years from the date of grant.

2018 Equity Incentive Plan

On January 31, 2018, the Company’s Board of Directors approved the Company’s 2018 Omnibus Incentive Plan (the
2018 Plan). The Company’s Board of Directors or a designated Committee of the Board is responsible for administration
of the 2018 Plan and determined the terms and conditions of each option granted, consistent with the terms of the 2018
Plan. The Company’s employees, directors, and consultants are eligible to receive awards under the 2018 Plan, including
grants of stock options and performance awards. Share-based awards generally expire ten years from the date of grant. The
2018 Plan provides for issuance of up to 1,000,000 shares of common stock, par value $0.001 per share under the 2018
Plan, subject to adjustment as provided in the 2018 Plan.

When stock options or performance awards are exercised net of the exercise price and taxes, the number of shares of
stock issued is reduced by the number of shares equal to the amount of taxes owed by the award recipient and that number

81

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
of shares are cancelled. The Company then uses its cash to pay tax authorities the amount of statutory taxes owed by and
on behalf of the award recipient.

Stock Options

The following summarizes information about stock option activity during 2019:

Number of
Options

Weighted
Average
Exercise Price  

Weighted
Average
Remaining
Contractual
Term

Aggregate Intrinsic
Value

Outstanding as of December 31, 2018

Options granted
Options exercised
Options forfeited/canceled

Outstanding as of December 31, 2019
Vested and expected to vest at December 31, 2019 
Exercisable at December 31, 2019

2,964,973   $
425,000    
 —   
(179,008)   
3,210,965    
3,210,965    
2,143,886   $

14.14 
1.80 
 —
18.37 
12.27 
12.27 
17.06 

In years
6.06

  $

In millions
0.0

6.05
6.05
4.70

  $
  $
  $

4,153,583 
4,153,583 
1,258,713 

The following summarizes information about stock options at December 31, 2019 by a range of exercise prices:

Range of exercise prices

From
0.95
3.24
4.10
16.87
36.40

$
$
$
$
$

To
1.88
4.09
16.66
35.00
53.55

  $
  $
  $
  $
  $

Options outstanding
  Weighted
average

Number of

outstanding

options

707,500  
892,575  
688,323  
779,691  
142,876  
3,210,965  

remaining

contractual

life (in years)
9.4
7.7
5.2
2.7
1.6
6.1

  $
  $
  $
  $
  $
  $

Weighted

average

exercise

price
1.48
3.56
12.04
25.03
51.65
12.27

Options exercisable

Number of

vested

options

93,487   $
497,433   $
631,412   $
778,678   $
142,876   $
2,143,886   $

Weighted

average

exercise

price
1.02
3.54
12.44
25.03
51.65
17.06

The Company uses Black-Scholes to estimate the fair value of options granted. Black-Scholes considers a number of
factors, including the market price of the Company’s  common  stock.  For  options  granted  to  employees  and  directors,  it
used certain factors to value each stock option granted, which resulted in a weighted average fair value of options granted
during 2019 and 2018, as follows:

Volatility
Risk-free interest rates
Expected life of option
Dividend yield
Forfeiture rate
Weighted average fair value of stock options granted

2019

2018

118% to 119%   87% to 118%
1.7% to 2.5%   2.7% to 2.9%

7 years
zero
zero
$1.60

7 years
zero
zero
$0.98

Volatility is based on reviews of the historical volatility of the Company’s common stock. Risk-free interest rates are
based on yields of U.S. treasury notes in effect at the date of grant. Expected life of option is based on actual historical
option exercises. Dividend yield is zero because the Company does not anticipate paying cash dividends in the foreseeable
future.

82

 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
     
   
 
   
 
 
 
 
 
 
 
 
 
   
 
 
 
   
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
For  options  granted  to  non-employees,  the Company estimates  the  fair  value  of  stock  options  granted  using  factors
similar  to  those  used  for  stock  options  granted  to  employees  and  directors  and  appropriate  for  the  terms  underlying  the
stock options granted to non-employees.

As of December 31, 2019,  the Company expects to recognize compensation expense of $2.1 million related to non-

vested options held by employees and directors over the weighted average remaining recognition period of 2.7 years.

Performance Awards

The following summarizes information about performance award activity during 2019:

Outstanding as of December 31, 2018

Granted
Vested performance awards
Forfeited/Canceled

Outstanding as of December 31, 2019

Number of Performance
Awards

138,055 
 —
 —
 —
138,055 

If  and  when  outstanding  performance  awards  vest,  the  Company  would  recognize  $2.3  million  in  non-cash  stock-

based compensation expense. These performance awards expire between 2022 and 2026.

Stock-Based Compensation Expense

The following summarizes information about non-cash stock-based compensation expense, in thousands:

Research and development

General and administrative

Total non-cash stock-based compensation expense

6.  Employee 401(k) Benefit Plan

Twelve months ended

December 31,

2019

2018

 $

$

542 

 $

754 

1,296 

 $

1,043 

1,345 

2,388 

The Company has a defined-contribution savings plan under Section 401(k) of the Internal Revenue Code. The plan
covers substantially all employees. Employees are eligible to participate in the plan the first day of the month after hire and
may contribute up to the current statutory limits under Internal Revenue Service regulations. The 401(k) plan permits the
Company  to  make  additional  matching  contributions  on  behalf  of  all  employees.  Through  December  31,  2019,    the
Company has not made any matching contributions to the 401(k) plan.

7.  Income Taxes

U.S. Tax Reform

In December 2017, legislation commonly known as the Tax Cuts and Jobs Act, or the Tax Act, was signed into law.
The Tax Act included a number of changes to existing tax law, including, among other changes, a permanent reduction the
U.S. federal corporate tax rate from 35% to 21%, effective as of January 1, 2018, as well as limitation of the deduction for
net operating losses to 80% of annual taxable income and elimination of net operating loss carrybacks, in each case, for
losses arising in taxable years beginning after December 31, 2017 (though any such net operating losses may be carried
forward indefinitely). 

In connection with the Tax Act, the Company remeasured certain deferred tax assets and liabilities based on the rates
at which they are expected to reverse in the future, which is generally 21%. The remeasurement of the Company's deferred
tax balance was primarily offset by application of its valuation allowance. The Company completed its

83

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
accounting for all of the enactment date income tax effects of the Tax Act as of December 31, 2018 and recognized no
material adjustments.

The Company did not provide for income taxes in 2019 and 2018 because it had a net operating loss for tax purposes
in  those  years  and  the  tax  benefit  that  would  have  resulted  from  the  statutory  rate  was  fully  offset  by  the  valuation
allowance.

The  reconciliation  of  the  statutory  federal  income  tax  rate  to  the  Company’s  effective  tax  rate  for  the  years  ended

December 31, 2019 and 2018 was as follows:

Tax at federal statutory rate
State tax, net of federal benefit
Equity-based compensation
Research & development credits
Change in valuation allowance
Effective income tax rate

Deferred tax assets and valuation allowance

Year ended December 31,

2019

2018

21.0 %
 -
(2.4)
0.6 
(19.2)

 — %

21.0 %
 -
(2.9)
1.9 
(20.0)

 — %

Deferred tax assets reflect the tax effects of net operating loss and tax credit carryforwards and temporary differences
between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax
purposes. The Company’s deferred taxes assets at December 31, 2019 and 2018 were valued at the corporate tax rate of
21% to reflect the Tax Act. The Company offsets its deferred tax assets by a valuation allowance because it is uncertain
about  the  timing  and  amount  of  any  future  profits.  Significant  components  of  its  deferred  tax  assets  are  as  follows  (in
thousands):

Deferred tax assets:

Net operating loss carryforwards
Stock-related compensation
Research & development credit carryforwards
Other

Total deferred tax assets:
Valuation allowance
Net deferred tax assets:
Deferred tax liabilities:

Property and equipment
Operating lease right-of-use assets

Total deferred tax liabilities:
Net deferred tax asset / (liability):

December 31,

2019

2018

$

$

$

$
$

17,110 
5,817 
6,587 
237 
29,751 
(29,725)
26 

$

$

$

(7)
(19)
(26)
$
 — $

16,500 
5,700 
6,500 
100 
28,800 
(28,800)
 —

 —
 —
 —
 —

The valuation allowance increased by $0.9 million and $1.3 million in 2019 and 2018, respectively, due to additional

book losses in the periods.  

The Company’s pre-tax net operating loss carryforwards of $81.5 million are federal, of which $74.1 million expires
between 2029 and 2037 and $7.4 million carries forward indefinitely. As of December 31, 2019, the Company had federal
research and development tax credits of approximately $11.0 million, which expire in the years 2023 through 2038.

84

 
 
 
Unrecognized tax benefits

The  Company  has  unrecognized  tax  benefits  related  to  tax  credits.  The  Company  added  to  its  unrecognized  tax

benefits in 2019 and 2018 as follows (in thousands):

Beginning balance
Additions based on tax positions related to the current year
Ending balance

Year ended December 31,
2018
2019

$

$

4,400 
 —
4,400 

$

$

4,300 
100 
4,400 

As  of  December  31,  2019,  there  were  no  unrecognized  tax  benefits  that  we  expect  would  change  significantly

over the next 12 months.

The Company files U.S. and Texas income tax returns. In the United States, the statute of limitations with respect
to the federal income tax returns for tax years after 2015 are open to audit; however, since the Company has net operating
losses, the taxing authority has the ability to review tax returns prior to the 2016 tax year and make adjustments to these net
operating loss carryforwards. We are not under audit in any taxing jurisdiction at this time.

8.  Leases and Commitments

The Company leases approximately 6,000 square feet of office space pursuant to a non-cancelable operating lease in

Austin, TX that expires on  December 31, 2020. Future minimum lease payments are (in thousands).

For the year ending December 31,
2020
Total future minimum lease payments
Lease: imputed interest
Total

  $

  $

99 
99 
(9)
90 

The Company believes that its facilities are adequate and suitable for its current needs. Rent expense was $0.1 million

both in 2019 and 2018.

The  Company  conducts  its  product  research  and  development  programs  through  a  combination  of  internal  and
collaborative  programs  that  include,  among  others,  arrangements  with  universities,  contract  research  organizations  and
clinical research sites. It has contractual arrangements with these organizations, however these contracts are cancelable on
thirty days’ notice and the Company’s obligations under these contracts are largely based on services performed.

85

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, evaluated the
effectiveness of our disclosure controls and procedures as of the end of the period covered by this Annual Report on Form
10-K.  Based  on  this  evaluation,  our  Chief  Executive  Officer  and  our  Chief  Financial  Officer  have  concluded  that  our
disclosure controls and procedures are effective to ensure that information we are required to disclose in reports that we
file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified
in  the  Securities  and  Exchange  Commission,  or  SEC,  rules  and  forms  and  that  such  information  is  accumulated  and
communicated to management as appropriate to allow timely decisions regarding required disclosures.

Management’s  annual  report  on  internal  control  over  financial  reporting.  Our  management  is  responsible  for
establishing  and  maintaining  adequate  internal  control  over  our  financial  reporting.  Our  management  has  assessed  the
effectiveness of internal control over financial reporting as of December 31, 2019. Our assessment was based on criteria set
forth  by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission,  or  COSO,  in  Internal  Control-
Integrated Framework (2013 Framework).

Our  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.  Our  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 our transactions and

dispositions of our assets;

(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 our receipts and expenditures are
being made only in accordance with authorizations of our management and board of directors; and

(3) provide  reasonable  assurance  regarding  prevention  or  timely  detection  of  unauthorized  acquisition,  use,  or

disposition of our 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.

Based on the COSO criteria, we  believe  our  internal  control  over  financial  reporting  as  of  December  31,  2019 was

effective.

This  Annual  Report  on  Form  10-K  does  not  include  an  attestation  report  of  our  independent  registered  public
accounting firm regarding internal control over financial reporting.  Management’s assessment of the effectiveness of our
internal  control  over  financial  reporting  as  of  December  31,  2019,  was  not  subject  to  attestation  by  our  independent
registered  public  accounting  firm  pursuant  to  rules  of  the  SEC  that  permit  a  smaller  reporting  company  to  provide  only
management’s report in the Company’s Annual Report on Form 10-K.

Changes in internal control over financial reporting.

There  was  no  change  in  our  internal  control  over  financial  reporting  that  occurred  during  the  quarter  ended
December  31,  2019  that  has  materially  affected,  or  is  reasonably  likely  to  materially  affect,  our  internal  control  over
financial reporting. 

86

 
 
 
 
Item 9B.    Other Information

None.

PART III

Item 10.    Directors and Executive Officers and Corporate Governance

The  information  regarding  our  directors,  executive  officers,  director  nomination  process  and  the  audit  committee  of
the  Board  is  incorporated  by  reference  from  "Directors  and  Executive  Officers"  in  our  Proxy  Statement  for  our  2020
Annual Meeting of Stockholders.

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Exchange Act requires our executive officers and directors and persons who own more than ten
percent (10%) of a registered class of our equity securities to file reports of ownership and changes in ownership with the
SEC. Executive officers, directors and greater than ten percent (10%) stockholders are required to furnish us with copies of
all Section 16(a) forms they file. We believe all of our executive officers and directors complied with all applicable filing
requirements during 2019.

Code of Ethics

We have adopted a Code of Ethics that applies to all of our directors, officers and employees, including our principal
executive officer and principal financial officer. We publicize the Code of Ethics through posting the policy on our website,
http://www.cassavasciences.com. We will disclose on our website any waivers of, or amendments to, our Code of Ethics.

Item 11.    Executive Compensation

The information required by this Item is incorporated by reference from our definitive Proxy Statement referred to in

Item 10 above where it appears under the heading "Executive Compensation and Other Matters."

Item 12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this Item regarding security ownership of certain beneficial owners and management is
incorporated  by  reference  from  our  definitive  Proxy  Statement  referred  to  in  Item  10  above  where  it  appears  under  the
heading "Security Ownership of Certain Beneficial Owners and Management."

The  following  table  summarizes  the  securities  authorized  for  issuance  under  our  equity  compensation  plans  as  of

December 31, 2019:

Equity compensation plans approved by stockholders
Equity compensation plans not approved by stockholders  

Number of
Securities to be
Issued Upon
Exercise of
Outstanding
Options, Warrants
and Rights

Weighted Average
Exercise Price of
Outstanding
Options,
Warrants
and Rights

Number of Securities
Remaining Available
for Future Issuance
Under Equity
Compensation
Plans

3,349,020  (1) $

 —  

3,349,020   $

11.77  (2)
 —  
11.77  

335,517  (3)

 —  
335,517  

(1) Includes outstanding stock options and awards for 2,626,520 shares of our common stock under the 2008 Plan

and 722,500 shares of our common stock under the 2018 Plan.

(2) Includes the weighted average stock price for outstanding stock options of $15.36 under the 2008 Plan and $1.65

for the 2018 Plan.

87

 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
(3) Represents 277,500 shares of our common stock for the 2018 Plan and 58,017 for the Employee Stock Purchase

Plan. No future awards shall occur under the 2008 Plan.

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 referred to in

Item 10 above where it appears under the heading "Certain Relationships and Related Transactions."

Item 14.    Principal Accountant Fees and Services

The information required by this Item is incorporated by reference from our definitive Proxy Statement referred to in

Item 10 above where it appears under the heading “Principal Accountant Fees and Services.”

88

 
 
 
 
Item 15.    Exhibits and Financial Statement Schedules

(a) The following documents are filed as part of this Form 10-K:

PART IV

(1)

(2)

Financial Statements (included in Part II of this report):
Report of Independent Registered Public Accounting Firm
Balance Sheets
Statements of Operations
Statements of Stockholders' Equity
Statements of Cash Flows
Notes to Financial Statements
Financial Statement Schedules:
All financial statement schedules are omitted because the information is inapplicable or presented in the notes
to the financial statements.

(3) Management Contracts, Compensatory Plans and Arrangements.  

Management  contracts,  compensatory  plans  and  arrangements  are  indicated  by  the  symbol
“*” in the applicable exhibits listed in Item 15(b), below.

(b) Exhibits

The exhibits listed below are filed as part of this Form 10-K other than Exhibit 32.1, which shall be deemed furnished.

Exhibit
No.
3.1
3.2
3.3
3.4
4.1
4.2
4.3
4.4
10.1

10.2

10.5

10.6
10.7
10.8

10.9

 Description
  Amended and Restated Certificate of Incorporation.
  Certificate of Amendment of Restated Certificate of Incorporation.
  Certificate of Amendment of Restated Certificate of Incorporation.
  Amended and Restated Bylaws of Cassava Sciences, Inc.
  Specimen Common Stock Certificate.
  Description of Registrant’s Securities.
  Form of Common Stock Purchase Warrant.
  Form of Wainwright Warrant.

*

*

*

Form of Indemnification Agreement between Registrant and each of its
directors and officers.
Employment  Agreement,  dated  October  23,  2001,  between  Registrant
and Nadav Friedmann, PhD. M.D. 
Employment Agreement, dated July 1, 1998 and amended December 17,
2008, between Registrant and Remi Barbier.

* 2000 Employee Stock Purchase Plan, as amended and restated.
* Amendment Number 1 to the 2008 Equity Incentive Plan.

*

Amendment  No.  2  to  Employment  Agreement  between  Registrant  and
Remi Barbier.
Lease Agreement, dated as of February 14, 2011 between Registrant and
StoneCliff Office, L.P.

10.10 * First Amendment to Lease Agreement, dated September 21, 2011.
10.11  

Second  Amendment  to  Lease  Agreement,  dated  as  of  April  3,  2014
between Registrant and StoneCliff Office, L.P. 
Third Amendment to Lease Agreement, dated as of November 3, 2017
between  Registrant  US  REIF  Eurus  Austin,  LLC  dba  StoneCliff
Building as successor in interest to StoneCliff Office, L.P.

10.12  

Incorporated by
Reference
Filing
Date

 Form 
  10-Q   7/29/2005  
  8-K   5/8/2017  
  10-K   3/29/2019  
  10-K   3/29/2019  
  10-Q   8/12/2019  

Exhibit
No.
3.1
3.1
3.3
3.4
4.1

Filed
Herewith

X

  8-K   8/20/2018  
  8-K   8/20/2018  

4.1
4.2

S-1   3/14/2000   10.1  

10-K   3/22/2002   10.5  

10-K   2/13/2009   10.12  

  10-Q   7/29/2010   10.1  
  10-Q   8/1/2013   10.1  
10-Q   8/1/2013   10.2  

10-Q   4/27/2011   10.1  

  10-K   2/9/2012   10.20  
10-Q   8/6/2014   10.1  

10-K   2/6/2018   10.17  

10.13 * 2018 Omnibus Incentive Plan.
10.14  

Form of Securities Purchase Agreement, dated August 15, 2018, by and
between Registrant and the purchasers named therein.

  8-K   5/11/2018   10.1  
8-K   8/20/2018   10.1  

89

 
   
  
  
  
  
   
  
  
  
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
10.15  

10.16 *

Agreement  between  Registrant  and  H.C.  Wainwright  &  Co.,  dated
August 15, 2018.
Employment Agreement, executed on October 9, 2018, by and between
Registrant and Eric Schoen.

8-K   8/20/2018   10.2  

8-K   10/11/2018   10.1  

23.1
24.1
31.1

31.2

32.1

  Consent of Independent Registered Public Accounting Firm.
  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  Financial  Officer  pursuant  to  Section  302  of
the Sarbanes-Oxley Act of 2002. 
Certifications  of  the  Chief  Executive  Officer  and  the  Chief  Financial
Officer  pursuant  to  18  U.S.C.  Section  1350,  as  adopted  pursuant  to
Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS   XBRL Instance Document.
101.SCH  XBRL Taxonomy Extension Schema Document.
101.CAL  XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF  XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB  XBRL Taxonomy Extension Labels Linkbase Document.
101.PRE  XBRL Taxonomy Extension Presentation Linkbase Document.
* Management contract, compensatory plan or arrangement.
+ Portions of this Exhibit are subject to a confidential treatment order.

(c) Financial Statement Schedules

X
X

X

X

X

X
X
X
X
X
X

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

The Company has elected not to include summary information.

90

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly

caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Cassava Sciences, Inc.
(Registrant)

/s/ REMI BARBIER
Remi Barbier,
Chairman of the Board of Directors,
President and Chief Executive Officer

Dated: March 26, 2020

POWER OF ATTORNEY

KNOW  ALL  PERSONS  BY  THESE  PRESENTS,  that  each  person  whose  signature  appears  below  constitutes  and
appoints  Remi  Barbier  his  true  and  lawful  attorneys-in-fact,  with  full  power  of  substitution,  for  him  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  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

Date

/s/  REMI BARBIER

Remi Barbier

/s/  ERIC J. SCHOEN

Eric J. Schoen

President, Chief Executive Officer and
Chairman of the Board of Directors
(Principal Executive Officer)

Chief Financial Officer
(Principal Financial Officer and Principal
Accounting Officer)

March 26, 2020

March 26, 2020

/s/  NADAV FRIEDMANN, PH.D., M.D.

Nadav Friedmann, Ph.D., M.D.

Chief Operating and Medical Officer
and Director

  March 26, 2020

/s/  ROBERT Z. GUSSIN, PH.D.

Robert Z. Gussin, Ph.D.

/s/  MICHAEL J. O'DONNELL, ESQ.

Michael J. O'Donnell, Esq.

/s/  SAIRA RAMASASTRY

Saira Ramasastry

/s/  SANFORD R. ROBERTSON
Sanford R. Robertson

/s/  PATRICK SCANNON, M.D., PH.D.

Patrick Scannon, M.D., Ph.D.

Director

Director

Director

Director

Director

91

March 26, 2020

March 26, 2020

March 26, 2020

March 26, 2020

March 26, 2020

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DESCRIPTION OF THE REGISTRANT’S SECURITIES
REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 4.2

The following is a brief description of the common stock, $0.00001 par value per share (the “Common

Stock”), of Cassava Sciences, Inc. (the “Company”), which is the only security of the Company registered pursuant to
Section 12 of the Securities Exchange Act of 1934, as amended.

General

Description of Common Stock

The following summary of the material features of our Common Stock and certain provisions of Delaware law

do not purport to be complete and is subject to, and qualified in its entirety by, the provisions of our amended and
restated certificate of incorporation, our bylaws, the Delaware General Corporation Law (“DGCL”) and other
applicable law. For additional detail about our capital stock, please refer to our amended and restated certificate of
incorporation and bylaws, each as amended, copies of which are included as exhibits to our Annual Report on Form 10-
K for the year ended December 31, 2019.

As of the date of this Exhibit to the Form 10-K, our authorized capital stock consists of 130,000,000 shares.

The Company is authorized to issue two classes of shares to be designated, respectively, Common Stock and Preferred
Stock. The total number of shares of Common Stock which this Company is authorized to issue is 120,000,000, with a
par value of $0.001, and the total number of shares of Preferred Stock which we is authorized to issue is 10,000,000,
with a par value of $0.001. The total number of shares of Common Stock, as of December 31, 2019, there were
21,841,810 shares of Common Stock issued and outstanding. Our Common Stock is listed on the Nasdaq Capital
Market under the symbol “SAVA.” 

Liquidation Rights

In the event of our liquidation, dissolution or winding up, the holders of Common Stock are entitled to share

ratably in all assets remaining after payment of liabilities, subject to prior distribution rights of preferred stock then
outstanding. The Common Stock has no preemptive or conversion rights or other subscription rights. There are no
redemption or sinking fund provisions applicable to the Common Stock.

Voting Right

The holders of Common Stock are entitled to one vote per share on all matters to be voted upon by the

stockholders.

Dividends

Subject to preferences that may be applicable to any outstanding preferred stock, the holders of Common

Stock are entitled to receive ratably any dividends that may be declared from time to time by the board of directors out
of funds legally available for that purpose. However, the Company is not currently paying any dividends.

No Preemptive or Similar Rights

The Common Stock has no preemptive or conversion rights or other subscription rights. There are no

redemption or sinking fund provisions applicable to the Common Stock.

Limitation on Rights of Holders of Common Stock – Preferred Stock

We currently have no shares of preferred stock outstanding. Our board of directors has the authority, without
further action by the stockholders, to issue up to 10,000,000 shares of preferred stock in one or more series and to fix
the rights, preferences, privileges and restrictions granted to or imposed upon the preferred stock. Any or all of these
rights may be greater than the rights of the Common Stock.

 
 
The board of directors, without stockholder approval, can issue preferred stock with voting, conversion or

other rights that could negatively affect the voting power and other rights of the holders of Common Stock. Preferred
stock could thus be issued quickly with terms calculated to delay or prevent a change in control of us or make it more
difficult to remove our management. Additionally, the issuance of preferred stock may have the effect of decreasing the
market price of the Common Stock.

Certain Anti-Takeover Matters

Our  amended  and  restated  certificate  of  incorporation  requires  that  certain  amendments  of  the  amended  and
restated certificate of incorporation and certain amendments by the stockholders of our bylaws require the approval of
at least 66 2/3% of the voting power of all outstanding stock. These provisions could discourage a potential acquirer
from making a tender offer or otherwise attempting to obtain control of our company and could delay changes in our
management.

Our  bylaws  establish  an  advance  notice  procedure  for  stockholder  proposals  to  be  brought  before  an  annual
meeting of our stockholders, including proposed nominations of persons for election to the board of directors. At an
annual meeting, stockholders may only consider proposals or nominations specified in the notice of meeting or brought
before  the  meeting  by  or  at  the  direction  of  the  board  of  directors.  Stockholders  may  also  consider  a  proposal  or
nomination by a person who was a stockholder of record on the record date for the meeting, who is entitled to vote at
the meeting and who has given to our Secretary timely written notice, in proper form, of his or her intention to bring
that business before the meeting. The  bylaws  do  not  give  the  board  of  directors  the  power  to  approve  or  disapprove
stockholder  nominations  of  candidates  or  proposals  regarding  other  business  to  be  conducted  at  a  special  or  annual
meeting  of  the  stockholders.  However,  our  bylaws  may  have  the  effect  of  precluding  the  conduct  of  business  at  a
meeting if the proper procedures are not followed. These provisions may also 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 our company.

Our  bylaws  provide  that  only  our  board  of  directors,  the  chairman  of  the  board,  the  president  or  the  chief
executive officer may call a special meeting of stockholders. Because our stockholders do not have the right to call a
special meeting, a stockholder could not force stockholder consideration of a proposal over the opposition of the board
of  directors  by  calling  a  special  meeting  of  stockholders  prior  to  such  time  as  a  majority  of  the  board  of  directors
believed  or  the  chief  executive  officer  believed  the  matter  should  be  considered  or  until  the  next  annual  meeting
provided that the requestor met the notice requirements. The restriction on the ability of stockholders to call a special
meeting means that a proposal to replace the board also could be delayed until the next annual meeting.

Director Classification

Our amended and restated certificate of incorporation provides for our board of directors to be divided into three
classes  serving  staggered  terms.  Approximately  one-third  of  the  board  of  directors  will  be  elected  each  year.  The
provision for a classified board could prevent a party who acquires control of a majority of the outstanding voting stock
from  obtaining  control  of  the  board  of  directors  until  the  second  annual  stockholders  meeting  following  the  date  the
acquirer obtains the controlling stock interest. The classified board provision could discourage a potential acquirer from
making a tender offer or otherwise attempting to obtain control of our company and could increase the likelihood that
incumbent  directors  will  retain  their  positions.  Our  amended  and  restated  certificate  of  incorporation  provides  that
directors  may  be  removed  with  cause  by  the  affirmative  vote  of  the  holders  of  the  outstanding  shares  of  Common
Stock.

Limitation of Liability and Indemnification Matters

Our amended and restated certificate of incorporation provides that to the fullest extent permitted by the DGCL
as the same exists or as may hereafter be amended, a director of the Company or any subsidiary of the Company will
not be held personally liable to the Company or its stockholders and will otherwise be indemnified by the Company for
monetary damages for breach of fiduciary duty as a director of the Company, any predecessor of the Company or any
subsidiary of the Company.  

 
The Company, under the amended and restated certificate of incorporation, also indemnifies to the fullest extent
permitted by law any person made or threatened to be made a party to an action or proceeding, whether criminal, civil,
administrative or investigative, by reason of the fact that he, his testator or intestate is or was a director or officer of the
Company, any predecessor of the Company or any subsidiary of the Company or serves or served at any other
enterprise as a director or officer at the request of the Company, any predecessor to the Company or any subsidiary of
the Company.  

Section 203 of the Delaware General Corporation Law

We are subject to the provisions of Section 203 of the DGCL. Under Section 203, we would generally be
prohibited from engaging in any business combination with any interested stockholder for a period of three years
following the time that this stockholder became an interested stockholder unless:

·

·

·

prior to this time, the board of directors of the Company approved either the business combination or the
transaction that resulted in the stockholder becoming an interested stockholder;

upon consummation of the transaction that resulted in the stockholder’s becoming an interested
stockholder, the interested stockholder owned at least 85% of the voting stock of the Company
outstanding at the time the transaction commenced, excluding shares owned by persons who are directors
and also officers, and by employee stock plans in which employee participants do not have the right to
determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange
offer; or

at or subsequent to such time, the business combination is approved by the board of directors and
authorized at an annual or special meeting of stockholders, and not by written consent, by the affirmative
vote of at least 66  2⁄3% of the outstanding voting stock that is not owned by the interested stockholder.

Under Section 203, a “business combination” includes:

·

·

·

·

·

any merger or consolidation involving the Company and the interested stockholder;

any sale, transfer, pledge or other disposition of 10% or more of the assets of the Company involving the
interested stockholder;

any transaction that results in the issuance or transfer by the Company of any stock of the Company to the
interested stockholder, subject to limited exceptions;

any transaction involving the Company that has the effect of increasing the proportionate share of the
stock of any class or series of the Company beneficially owned by the interested stockholder; or

the receipt by the interested stockholder of the benefit of any loans, advances, guarantees, pledges or other
financial benefits provided by or through the Company

In general, Section 203 defines an interested stockholder as an entity or person beneficially owning 15% or

more of the outstanding voting stock of the Company and any entity or person affiliated with or controlling or
controlled by such entity or person.

Consent of Independent Registered Public Accounting Firm

EXHIBIT 23.1

We consent to the incorporation by reference in the following Registration Statements:

1) Registration Statement (Form S-3 No. 333-217319) and related Prospectus of Cassava Sciences, Inc.,

2) Registration Statement (Form S-8 No. 333-168390) pertaining to the 2000 Employee Stock Purchase Plan of

Pain Therapeutics, Inc.,

3) Registration Statement (Form S-8 No. 333-225708) pertaining to the 2018 Omnibus Incentive Plan of Pain

Therapeutics, Inc., and

4) Registration Statement (Form S-1 No. 333-228883) and related Prospectus of Cassava Sciences, Inc.,

of our report dated March 26, 2020, with respect to the financial statements of Cassava Sciences, Inc., included in this
Annual Report (Form 10-K) for the year ended December 31, 2019.

/s/Ernst &Young LLP

Austin, Texas
March 26, 2020

PRINCIPAL EXECUTIVE OFFICER CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 31.1

I, Remi Barbier, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Cassava Sciences, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material  fact  necessary  to  make  the  statements  made,  in  light  of  the  circumstances  under  which  such
statements were made, not misleading with respect to the period covered by this report;

3. Based  on  my  knowledge,  the  financial  statements,  and  other  financial  information  included  in  this  report,
fairly  present  in  all  material  respects  the  financial  condition,  results  of  operations  and  cash  flows  of  the
registrant as of, and for, the periods presented in this report;

4. The  registrant’s  other  certifying  officer  and  I  are  responsible  for  establishing  and  maintaining  disclosure
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures
to  be  designed  under  our  supervision,  to  ensure  that  material  information  relating  to  the  registrant,
including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial
reporting  to  be  designed  under  our  supervision,  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;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end
of the period covered by this report based on such evaluation; and

d. Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the
case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant's internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of
directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over
financial  reporting  which  are  reasonably  likely  to  adversely  affect  the  registrant’s ability to record,
process, summarize and report financial information; and

b. Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a

significant role in the registrant’s internal control over financial reporting.

Date: March 26, 2020

/s/ REMI BARBIER
Remi Barbier,
Chairman of the Board of Directors,
President and Chief Executive Officer
(Principal Executive Officer)

PRINCIPAL FINANCIAL OFFICER CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

EXHIBIT 31.2

I, Eric J. Schoen, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Cassava Sciences, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material  fact  necessary  to  make  the  statements  made,  in  light  of  the  circumstances  under  which  such
statements were made, not misleading with respect to the period covered by this report;

3. Based  on  my  knowledge,  the  financial  statements,  and  other  financial  information  included  in  this  report,
fairly  present  in  all  material  respects  the  financial  condition,  results  of  operations  and  cash  flows  of  the
registrant as of, and for, the periods presented in this report;

4. The  registrant’s  other  certifying  officer  and  I  are  responsible  for  establishing  and  maintaining  disclosure
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures
to  be  designed  under  our  supervision,  to  ensure  that  material  information  relating  to  the  registrant,
including  its  consolidated  subsidiaries,  is  made  known  to  us  by  others  within  those  entities,
particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial
reporting  to  be  designed  under  our  supervision,  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;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end
of the period covered by this report based on such evaluation; and

d. Disclosed  in  this  report  any  change  in  the  registrant’s  internal  control  over  financial  reporting  that
occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the
case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of
directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over
financial  reporting  which  are  reasonably  likely  to  adversely  affect  the  registrant’s ability to record,
process, summarize and report financial information; and

b. Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a

significant role in the registrant’s internal control over financial reporting.

ERIC 

/s/ 
SCHOEN
Eric J. Schoen,
Chief Financial Officer
(Principal Financial Officer)

J.

Date: March 26, 2020

EXHIBIT 32.1

CERTIFICATIONS OF THE CHIEF EXECUTIVE OFFICER AND THE
CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of
the undersigned officers of Cassava Sciences, Inc. (the “Company”), hereby certifies that to the best of such officer’s
knowledge:

1. The Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, and to which this
certification  is  attached  as  Exhibit  32.1  (the  “Periodic  Report”),  fully  complies  with  the  requirements  of
Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and

2. The  information  contained  in  this  Periodic  Report  fairly  presents,  in  all  material  respects,  the  financial

condition and results of operations of the Company.

Date: March 26,  2020

/s/ REMI BARBIER
Remi Barbier,
Chairman of the Board of Directors,
President and Chief Executive Officer

/s/ ERIC J. SCHOEN
Eric J. Schoen,
Chief Financial Officer