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Allakos Inc.

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FY2018 Annual Report · Allakos 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, 2018
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 001-38582

Allakos Inc.

(Exact name of Registrant as specified in its Charter)

Delaware
(State or other jurisdiction of
incorporation or organization)
975 Island Drive, Suite 201
Redwood City, California
(Address of principal executive offices)

45-4798831
(I.R.S. Employer
Identification No.)

94065
(Zip Code)

Registrant’s telephone number, including area code: (650) 597-5002

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

Title of each class
Common Stock, Par Value $0.001 Per Share

Name of each exchange on which registered
The Nasdaq Global Select Market

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

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES ☐ NO ☒
Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or 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 if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405) is not contained herein, and will not be contained, to the best of Registrant’s knowledge,
in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ☐
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.

Large accelerated filer
Non-accelerated filer
Emerging growth company

  ☐
  ☒
  ☒

   Accelerated filer
   Smaller reporting 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 Exchange Act). YES ☐ NO ☒
The registrant was not a public company as of the last business day of its most recently completed second fiscal quarter and therefore, cannot calculate the aggregate market value of its voting and
non-voting common equity held by non-affiliates as of such date.
The number of shares of Registrant’s Common Stock outstanding as of March 7, 2019 was 43,101,999.
Portions of the Registrant’s Definitive Proxy Statement relating to the registrant’s 2019 Annual Meeting of Shareholders are incorporated by reference into Part III of this Annual Report on Form 10-
K where indicated. Such Definitive Proxy Statement will be filed with the Securities and Exchange Commission within 120 days after the end of the registrant’s 2018 fiscal year ended December 31,
2018.

 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
Table of Contents

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

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

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

Exhibits, Financial Statement Schedules
Form 10-K Summary
Signatures

PART I
Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.

PART II
Item 5.
Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.

PART III
Item 10.
Item 11.
Item 12.
Item 13.
Item 14.

PART IV
Item 15.
Item 16.

Page

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113

114
114
114
114
114

115
116
117

i

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 1. Business.

Overview

PART I

We are a clinical stage biotechnology company developing AK002, our wholly owned monoclonal antibody, for the treatment of various eosinophil
and mast cell related diseases. AK002 selectively targets both eosinophils and mast cells, white blood cells that are widely distributed in the body and play a
central role in the inflammatory response. Inappropriately activated eosinophils and mast cells have been identified as key drivers in a number of severe
diseases affecting the gastrointestinal tract, eyes, skin, lungs and other organs. As such, AK002 has the potential to treat a large number of severe diseases.
AK002 has demonstrated activity in clinical trials. In these trails, AK002 depleted blood eosinophils and improved symptoms in patients with three forms of
chronic urticaria (“CU”) and indolent systemic mastocytosis (“ISM”), all mast cell driven diseases. The activity observed in ISM and CU suggest that AK002
could provide significant benefit to patients suffering from these diseases and highlight AK002’s potential to broadly inhibit mast cells in different disease
settings. We are developing AK002 for the treatment of eosinophilic gastritis (“EG”), eosinophilic gastroenteritis (“EGE”), and eosinophilic esophagitis
(“EoE”). In addition, we have or are currently conducting studies in ISM, CU, and severe allergic conjunctivitis (“SAC”) and are evaluating additional
indications for future development.

Figure 1. Select Eosinophil and Mast Cell Related Diseases

Figure 1: We are focusing our development efforts on AK002 for the treatment of the diseases shown in bold and are evaluating additional indications for future development.

Despite the knowledge that eosinophils and mast cells drive many pathological conditions, there are no approved therapies that selectively target both

eosinophils and mast cells. AK002 binds to Siglec-8, an inhibitory receptor found on eosinophils and mast cells, which represents a novel way to selectively
deplete or inhibit these important immune cells and thereby resolve inflammation. We believe AK002 is the only Siglec-8 targeting

1

 
antibody currently in clinical development and has the potential to have advantages over current treatments for the diseases we are pursuing.

AK002 has demonstrated activity in 3 forms of CU and ISM, and additional studies are currently being conducted in EG/EGE and SAC. CU is a

group of inflammatory skin diseases characterized by hives and severe itching resulting from the inappropriate activation of mast cells in the skin. In a phase
2 open-label six month multiple dose study of 47 antihistamine refractory patients with chronic spontaneous urticaria, cholinergic urticaria or dermatographic
urticaria, patients reported high levels of disease control and many patients experienced complete resolution of symptoms while receiving AK002.
Importantly, AK002 also produced high levels of response in patients that were refractory to the only approved biologic treatment option, Xolair, suggesting
that AK002, if approved, could be the treatment of choice for antihistamine refractory CU patients. ISM is a disorder caused by the release of mast cell
derived inflammatory mediators throughout the body resulting in severe symptoms in the skin, gastrointestinal tract, central nervous system, joints, and
muscles. There are no approved treatments for ISM. In a Phase 1 open-label six month multiple dose study in 11 patients with ISM, patients reported
significant improvements in symptoms and improved quality of life measures. The activity observed in ISM and CU suggest that AK002 could provide
significant benefit to patients suffering from these diseases and highlight AK002’s potential to broadly inhibit mast cells in different disease settings.

Previously, we have shown that AK002 depletes eosinophils. In a randomized, double-blind, placebo-controlled Phase 1 trial in 51 healthy
volunteers, all doses of AK002 resulted in complete depletion of blood eosinophils within one hour after administration. The duration of depletion was dose-
dependent, with a single dose of 1.0 mg/kg of AK002 suppressing eosinophils for up to 84 days. Depletion of blood eosinophils was also observed in the
AK002 ISM and CU clinical studies.

We are currently testing AK002 in a double-blind, placebo-controlled Phase 2 trial in patients with EG and/or EGE. EG and EGE are severe
eosinophilic inflammatory diseases of the stomach and small intestine, respectively. AK002 has received orphan drug designation for EG and EGE from the
U.S. Food and Drug Administration (“FDA”) and we expect to report top-line data from the Phase 2 trial in mid-2019. In addition, AK002 is being tested in a
Phase 1 trial in patients with SAC. SAC is a group of allergic eye diseases that are caused by eosinophil and mast cell driven inflammation in the tissues
lining the eyes and eyelids. We expect to report top-line data from the trial in SAC patients in the first or second quarter of 2019. The status of our clinical
trials is shown below.

Figure 2. AK002 Development Status

We have prioritized our AK002 development efforts based on our assessment of the probability of clinical and regulatory success, unmet medical

need and potential market opportunity. We have assembled a team with a proven track record and deep experience in antibody discovery and in clinical
development, commercialization, operations and finance from companies such as Genentech, Gilead, Intermune, Novo Nordisk, Pfizer, ZS Pharma and
others.

2

 
Understanding the Foundation of Our Approach

Background on Eosinophils, Mast Cells and Siglec-8

Eosinophils and mast cells are involved in many inflammatory conditions and therefore represent attractive drug targets. Eosinophils and mast cells

can respond to signals from allergens, tissues, bacteria, viruses and also cells of the innate and adaptive immune system. In response, they release a large
variety of mediators which can result in tissue damage, fibrosis and the recruitment and activation of other innate and adaptive immune cells. The ability to
respond to signals from multiple cell types and the diverse array of mediators that they produce place eosinophils and mast cells in the center of multiple
aspects of the inflammatory response.

Eosinophils are normally present in the blood and tissues, especially in the mucosal linings of the respiratory and gastrointestinal tract. However, they
can be recruited to any site of the body in the setting of inflammation. Mast cells reside within the connective tissue of a variety of tissues and all vascularized
organs, often located in close proximity to blood vessels, nerves and lymphatics. Sites include the dermis, gut mucosa and submucosa, conjunctiva and
pulmonary alveoli and airways. As a result of their widespread location and potent inflammatory activity, eosinophils and mast cells have been identified as
key drivers in a number of severe diseases of the gastrointestinal tract, eyes, skin and lungs as well as diseases which affect multiple organ systems.

Siglec-8 is an inhibitory receptor located selectively on eosinophils, mast cells and, to a lesser extent, on basophils. Because Siglec-8 is expressed in
high abundance only on eosinophils and mast cells, it presents a novel way to selectively target these important immune cells. As an inhibitory receptor, the
natural function of Siglec-8 is to counteract activating signals within eosinophils and mast cells that lead to an inflammatory response. By binding to Siglec-8,
AK002 is able to selectively target eosinophils and mast cells to resolve inflammation.

Eosinophils and Mast Cells are Effector Cells That are Central to Initiating and Maintaining Inflammatory Responses

Eosinophils and mast cells respond to a variety of activating signals including those from cell-cell contact, allergens bound to IgE, cytokines
(including IL-33, thymic stromal lymphopoietin (“TSLP”), IL-5, IL-4 and IL-13) and viruses (through Toll-Like Receptor-3). In response to these and other
activating signals, eosinophils and mast cells produce a broad range of inflammatory mediators that cause tissue damage and contribute to acute and chronic
inflammation. These mediators include vasoactive amines, bioactive lipids, proteases, chemokines and cytokines. The mediators, their functions and their
contribution to disease pathogenesis are described in more detail below.

•

•

•

Mast cells play an important role in inflammation as the main producer of histamine. Histamine causes vasodilation and produces intense
itching. It is believed to contribute to increased gastrointestinal peristalsis (diarrhea), the skin symptoms of urticaria and ISM, the diffuse
vasodilation of anaphylaxis and bronchospasm in asthma.

Proteases and toxins secreted from eosinophils and mast cells are the key cause of tissue damage and contribute to tissue fibrosis. Eosinophil
and mast cell secretions are toxic to surrounding cells and break down tissues, resulting in fibrosis and tissue remodeling.

Eosinophils and mast cells drive inflammation by signaling to other cells of the immune system. Eosinophils and mast cells release lipid
mediators and a large variety of cytokines (including TNFa, IL-1, IL-3, IL-4, IL-5, IL-6, IL-8, IL-9, IL-13, MCP-1, CCL2, CCL3, CCL5,
CCL17, TGFa, TGFb and granulocyte-macrophage colony stimulating factor (“GM-CSF”)) that attract and activate cells of the innate and
adaptive immune system, such as neutrophils, monocytes, macrophages, basophils, B-cells, T-cells and dendritic cells, as well as other
eosinophils and mast cells.

3

 
 
 
 
Figure 3. Eosinophil and Mast Cell Functions

Due to their ability to respond to signals from multiple cell types and elicit responses from others, eosinophils and mast cells mediate the immediate

hypersensitivity and late phase responses responsible for allergies and many innate and adaptive immune responses.

Siglec-8 is an Attractive Target for Eosinophils and Mast Cells

Siglec-8 (sialic acid immunoglobulin-like lectin 8) is a constitutively expressed inhibitory receptor that is restricted to eosinophils, mast cells and to a
lesser extent basophils (approximately 1/100 the level on mast cells and eosinophils). The physiological function of Siglec-8 is to provide an inhibitory signal
to eosinophils and mast cells. Siglec-8 exerts these effects through an intracellular immunoreceptor, tyrosine-based inhibitory motif (“ITIM”) and ITIM-like
motif. In contrast to approaches which block a single activating cytokine or receptor, targeting the ITIM signaling cascade (via Siglec-8) has the potential to
counteract a broad array of activating signals, which could allow for the treatment of multiple diseases. Antibodies to Siglec-8 have been shown to trigger
apoptosis of blood and tissue eosinophils and to inhibit the release of inflammatory mediators from mast cells. In the human clinical studies, AK002 has
depeleted eosinophils and demonstrated mast cell inhibitory activity in 4 disease settings: chronic spontaneous urticaria, cholinergic urticaria, symptomatic
dermographism, and ISM. This expression pattern and broad inhibitory function make Siglec-8 an attractive target for the selective depletion of eosinophils
and inhibition of mast cells.

Figure 4. Siglec-8 Triggers Apoptosis of Eosinophils and Inhibition of Mast Cells

4

 
 
Our Strategy

AK002 has shown pharmacodynamic activity in humans and activity in a broad array of animal disease models of eosinophilic and mast cell driven
diseases. We have prioritized our development efforts based on our assessment of the probability of clinical and regulatory success, unmet medical need and
potential market opportunity. We have chosen to focus our wholly-owned AK002 program initially on four indications: EG, ISM, CU and SAC. The key
elements of our strategy are to:

•

•

•

•

Rapidly advance AK002 through clinical development in EG and EGE. AK002 has secured orphan drug designation for the treatment of
EG and EGE with the FDA. We have completed a Phase 1 trial in healthy volunteers. In this trial, AK002 exhibited clear signs of
pharmacodynamic activity by depleting blood eosinophils as soon as one hour after dosing. We are conducting a Phase 2 trial in patients with
EG and/or EGE. We believe this trial, if positive, in conjunction with a future Phase 3 trial will serve as the basis for demonstrating safety
and efficacy in our biologics license application (“BLA”) and market authorization application (“MAA”) submissions.

Develop AK002 for other EGIDs. EG and EGE are part of a group of related diseases called eosinophilic gastrointestinal diseases
(“EGIDs”). These include EoE and eosinophilic colitis (“EC”). EGIDs share the common pathology of tissue inflammation caused by the
presence of elevated numbers of eosinophils. If AK002 shows activity in EG and EGE, we expect to conduct clinical trials of AK002 in EoE.

Evaluate additional eosinophilic and mast cell driven conditions. We have completed trials for ISM and CU and are conducting an SAC
study that is expected to be completed in the first or second quarter of 2019. We will evaluate further development in these and other
indications.

Build commercial capability and retain rights in key markets. If AK002 receives regulatory approval, we intend to retain the rights to it in
key markets, and plan to commercialize AK002 in both the United States and Europe through a specialty sales force.

EG and other EGIDs, ISM, CU and SAC are severe diseases which lack effective treatments. We believe a significant market opportunity for AK002

exists in each of these diseases.

•

Coordinate clinical and manufacturing process development. AK002 has been produced under current good manufacturing practices
(“cGMP”) at commercial scale utilizing the commercial process at Lonza Sales AG (“Lonza”), a Contract Development Manufacturing
Organization (“CDMO”). We have signed an agreement with Lonza for BLA activities.

AK002 Clinical Development Plan

AK002 was designed to take advantage of the selective expression pattern and inhibitory function of Siglec-8, an inhibitory receptor found on
eosinophils, mast cells, and to a lesser extent, on basophils. AK002 is a humanized antibody that binds to Siglec-8 with high affinity (bivalent binding avidity
(K D ) = 17 pM, determined by surface plasmon resonance analysis). The high expression level of Siglec-8 on eosinophils and mast cells allows AK002 to
selectively deplete eosinophils and inhibit mast cells. AK002 is a non-fucosylated IgG1 antibody engineered to have potent antibody-dependent cellular
cytotoxicity (“ADCC”). ADCC is a mechanism whereby the binding of an antibody like AK002 triggers an effector cell of the immune system (usually a
natural killer (“NK”) cell) to destroy the antibody-bound cell. This provides AK002 with an additional mechanism to deplete eosinophils present in blood,
where NK cells also reside. As a result of these dual modes of action, AK002 has been shown to deplete eosinophils in blood and tissue, and to inhibit the
release of inflammatory mediators from mast cells.

5

 
 
 
 
 
 
AK002 has demonstrated activity in a broad array of animal disease models of eosinophilic and mast cell-driven diseases. Consistent with these

experiments, human trials have shown that AK002 depletes blood eosinophils and inhibits mast cell symptoms in 4 different diseases (ISM, chronic
spontaneous urticaria, cholinergic urticaria, and symptomatic dermographism). AK002 has generally been well tolerated in our clinical studies. The most
common adverse event has been the occurrence of mild to moderate infusion-related reactions (“IRRs”) (flushing, feeling of warmth, headache, nausea or
dizziness), which occurred mostly during the first infusion and diminished or did not occur on subsequent infusions.

Eosinophilic Gastritis and Eosinophilic Gastrointestinal Disorders

Disease Overview

EGIDs are chronic inflammatory disorders that share a similar eosinophilic driven inflammation that occurs along different segments of the
gastrointestinal (“GI”) tract. Based on the site of eosinophilic infiltration the EGIDs are subcategorized into EoE (esophagus), EG (stomach), EGE
(duodenum and small intestine) and EC (colon). The EGIDs affect collectively up to 300,000 patients in the United States, though individually they are
orphan diseases.

EG is a rare disease that is characterized by chronic inflammation due to patchy or diffuse infiltration of eosinophils into layers of the stomach.
Symptoms commonly include abdominal pain, nausea, vomiting, diarrhea, malnutrition and weight loss. EG can occur with eosinophilia isolated to the
stomach, or often in combination with eosinophilia of the small intestine. Diagnosis is established based on clinical presentation (gastrointestinal symptoms)
combined with increased tissue eosinophils in biopsy specimens from the stomach and/or duodenum without any other cause for the eosinophilia. The
presence of greater than 30 eosinophils per high powered field (“hpf”) in 5 stomach biopsies identifies the presence of EG and the presence of greater than 30
eosinophils per hpf in 3 duodenal biopsies identifies the presence of EGE. The estimated prevalence of EG in the United States is approximately 20,000 to
25,000 patients, and the estimated prevalence of EGE in the United States is approximately 25,000 patients and we believe these diseases may be significantly
underdiagnosed based on our conversations with gastroenterologists.

It is believed that EG and other EGIDs arise in some patients from food allergies or other allergens that cause a hypersensitivity reaction that leads to

recruitment of eosinophils to the GI tract. The gastrointestinal symptoms are believed to be due to the release of inflammatory mediators from activated
eosinophils. Mast cells are also elevated and believed to play a significant role. Elevated serum immunoglobulin E (“IgE”) levels and food-specific IgE are
correlated with EG in some patients and provide evidence for the allergy hypothesis and mast cell involvement. We have recently demonstrated that in
biopsies of patients with symptomatic EG, mast cells are present in elevated numbers compared to normal controls and that the mast cells are also in an
increased activation state, providing additional evidence for a pathogenic role of mast cells in EGIDs.

Current Therapies and Limitations

There are no FDA-approved treatments for EG or EGE. Current therapies and disease management strategies include restricted/elemental diets and

systemic or topical corticosteroids. Restricted/elemental diets are designed to avoid foods which trigger symptoms. Unfortunately for most patients the
restricted/elemental diets are only partially effective and mainly used as a strategy to provide nutrition despite continuing symptoms. Corticosteroids,
systemic or topical, can provide symptom relief, but are not appropriate for long-term treatment due to their numerous side effects. By reducing the number of
blood and tissue eosinophils and inhibiting mast cells, AK002 may be effective in the treatment of patients with EG or EGE.

Clinical Results (healthy volunteer study)

AK002 was tested in a randomized, double-blind, placebo-controlled, dose-escalating Phase 1 trial conducted in Melbourne, Australia. 51 healthy

volunteers were randomized to receive doses of AK002 (0.001, 0.003, 0.01, 0.03, 0.1, 0.3, or 1.0 mg/kg) or placebo. The primary endpoints of the trial were
safety and tolerability. The secondary endpoints included pharmacokinetic and pharmacodynamic (“PK/PD”) measurements, including changes in the
absolute peripheral blood counts of eosinophils.

6

 
As shown in Figure 5, with respect to the secondary endpoints, all doses of AK002 tested resulted in complete depletion of blood eosinophils one

hour after administration, clearly demonstrating the pharmacodynamic activity of AK002. The duration of depletion was dose-dependent with a single dose of
1.0 mg/kg of AK002 suppressing eosinophils for up to 84 days. AK002’s pharmacokinetic half-life was determined to be 18 days.

Figure 5. Single Dose Placebo and AK002 Eosinophil Response

Blood Eosinophils 10³/mL

Dose Cohort
(mg/kg)
0.001
0.003
0.01
0.03
0.1
0.3
1.0

Placebo
Pre-dose
NA
120
210
150
100
180
60

Placebo
1 Hr Post-dose
NA
70
150
150
80
140
40

AK002
Pre-dose
70
160
160
160
250
180
120

AK002
1 Hr Post-dose
0
0
0
0
0
0
0

Minimal Duration
Eos Depletion
1 Day
2 Days
4-7 Days
7-14 Days
14-28 Days
28 Days
56-84 Days

In the multi-dose portion of the trial, subjects received monthly doses of 0.3 mg/kg. Monthly administrations of this dose provided sustained

eosinophil depletion for the duration of dosing.

Safety (All Studies)

AK002 has generally been well tolerated in our clinical trials. The most common adverse event has been the occurrence of mild to moderate IRRs

(consisting of flushing, feeling of warmth, headache, nausea or dizziness) which occurred in 22% of first infusions and 3% of subsequent infusions. Temporal
interruption of the AK002 infusion and minimal intervention generally resulted in prompt resolution of symptoms and ability to resume the infusion without
further complications, although there have been instances when an IRR has resulted in a subject being discontinued from a trial.

There have been no clinically significant effects of AK002 identified in vital signs, ECGs, clinical laboratory parameters (including hematology,

clinical chemistry and urinalysis) or physical examinations. Transient (resolving within 24 hours) decreases in lymphocyte count have been observed after
AK002 infusion, as seen with certain other monoclonal antibodies, that were not associated with any adverse event.

Anti-Siglec-8 Antibody Reduces Eosinophil and Mast Cell Levels in EG/EGE Model

In this model, two groups of Siglec-8 transgenic mice were sensitized with ovalbumin to induce eosinophil and mast cell driven gastrointestinal
inflammation similar to that observed in EG and other EGIDs. A third group of animals was administered phosphate buffered saline to serve as normal
unsensitized sham controls (“sham”). Treatment with a single dose of anti-Siglec-8 antibody led to lower levels of eosinophils in the blood, stomach and
small intestine and reduced numbers of mast cells in the stomach and small intestine compared to mice that received an isotype control antibody (“ISO”).

7

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 6. EG/EGE Model Eosinophil and Mast Cell Counts in Blood, Stomach and Small Intestine

Anti-Siglec-8 treatment also reduced the levels of multiple important chemokines (CCL5/Rantes, CCL2/MCP-1, CCL17) to the levels of sham
control animals. Chemokines are known to recruit and activate cells of the innate and adaptive immune system. By normalizing chemokine secretions, AK002
may be able to reduce further recruitment of immune cells and thereby interrupt the inflammatory cascade.

Figure 7. Chemokine Levels in the EG/EGE Mouse Model

8

 
Phase 2 Trial

AK002 has received orphan drug designation in the United States for the treatment of EG and EGE. We have initiated a randomized, double-blind,

placebo-controlled Phase 2 trial with AK002 in approximately 60 patients with active, moderate to severe, biopsy-confirmed EG (stomach >30
eosinophils/hpf in 5 hpf) and/or EGE (duodenum >30 eosinophils/hpf in 3 hpf). Patients were randomized 1:1:1 to receive: (a) 0.3 mg/kg for the first month
followed by three doses of 1.0 mg/kg AK002 given monthly, (b) 0.3 mg/kg for the first month followed by 1.0 mg/kg, 3.0 mg/kg and 3.0 mg/kg given
monthly, or (c) monthly placebo. The primary endpoint is the reduction in gastric or duodenal eosinophils post-treatment with AK002. The secondary
endpoints include changes in EG and EGE patient symptoms, such as abdominal pain, nausea, vomiting and diarrhea, as reported by patients using our
proprietary daily Patient Reported Outcome (“PRO”) questionnaire. The PRO was developed based on published guidance from the FDA on the development
of PRO instruments, and is expected to be used to help determine safety and efficacy in future clinical trials.

A number of EG patients enrolled in the trial also have concomitant EoE. Consequently, it may be possible to evaluate response to treatment with
AK002 in EoE as well. Patients completing the randomized portion of the trial will be eligible to enroll in a nine month safety exposure trial. Top-line data
from the Phase 2 trial are expected during mid-2019. Based on discussions with the FDA, we believe that this Phase 2 trial, if successful, and a single Phase 3
trial, if successful, may be sufficient for regulatory approval of AK002 in EG and EGE.

Figure 8. EG Phase 2 Trial Design

Design

•Randomized, double-blind, placebo controlled

•60 Patients – 3 arms

—20 patients 0.3 mg/kg, then 1.0 mg/

kg

—20 patients 0.3 mg/kg, then 1.0 mg/
kg, then 3.0 mg/kg and 3.0 mg/kg

—20 patients placebo

•Multiple doses (x4)

Indolent Systemic Mastocytosis

Disease Overview

Key Endpoints

Primary

•Eosinophils per high powered field from gastric or duodenal

biopsies

•Patient reported outcomes: abdominal pain, nausea, diarrhea,

Secondary

vomiting

•Assessment of comorbid EOE

ISM is a rare disease characterized by the clonal proliferation and accumulation of mast cells in the bone marrow, respiratory and gastrointestinal

tracts, and organs such as the skin, liver, spleen and brain. Common symptoms include pruritus, flushing, headache, cognitive impairment, fatigue, diarrhea,
gastrointestinal cramps, hypotension and skin lesions, as well as an increased risk for osteoporosis and anaphylaxis, which in some cases can be life
threatening. The symptoms of ISM are attributed to mast cell activation and the systemic release of mediators. Approximately 30,000 patients in the United
States suffer from ISM. AK002 has received orphan drug designation from the European Medicines Agency for the potential treatment of ISM.

Current Therapies and Limitations

There are currently no drugs approved for the treatment of ISM by the FDA or EMA. ISM is treated with drugs targeting mast cell mediators,

including antihistamines, cromolyn sodium and leukotriene blocking agents. Most patients’ symptoms remain poorly controlled by these treatments.
Glucocorticoids can provide temporary relief in some cases; however long-term treatment with steroids is not appropriate due to their many side effects.

9

 
 
 
 
 
Clinical Results

AK002 has been evaluated in an open-label, single and multiple ascending dose Phase 1 trial in patients with ISM. The single dose portion of this

trial was completed during the second quarter of 2017, and the six month multi-dose portion completed in the first quarter of 2019. The primary endpoints of
this trial were safety and tolerability. Key secondary endpoints were the PK/PD profile, peripheral counts of eosinophils and patient-reported mastocytosis
disease symptoms including itching, hives, skin flushing, diarrhea, abdominal pain, fatigue, headache, difficulty concentrating and muscle and joint pain. In
the single dose portion, 13 patients received single escalating doses of 0.0003 to 1.0 mg/kg, including three patients receiving 0.3 mg/kg and three patients
receiving 1.0 mg/kg of AK002. Five out of six patients receiving 0.3 or 1.0 mg/kg reported to the study investigators that they had improvements in
symptoms, including diarrhea, abdominal pain, fatigue, pruritus, difficulty concentrating and headaches.

In the multi-dose portion of the trial, six patients received six doses of 1.0 mg/kg of AK002 given monthly and five patients received 1.0 mg/kg for

the first month and then monthly doses of 3.0 to 10 mg/kg of AK002 for five months. Eosinophil depletion was observed for all patients throughout the
dosing period with AK002. ISM symptoms and quality of life were assessed using an Allakos created PRO, the Mastocytosis Questionnaire (“MSQ”), and
two published questionnaires, the Mastocytosis Activity and Symptom Severity questionnaire (“MAS”) and the Mastocytosis Quality of Life questionnaire
(“MC-QoL”). The MSQ is a proprietary daily PRO Mastocytosis Questionnaire that we developed based on published guidance from the FDA on the
development of PRO instruments, and is expected to be used to help determine safety and efficacy in future clinical trials. The questionnaire consists of nine
symptom assessments, with each symptom being scored on a 0-10 scale and higher values representing greater symptom burden (total score 0-90 points). For
each PRO, baseline scores were collected over 14 to 28 days and compared to scores at Weeks 21 to 22, two weeks after the final AK002 dose. PRO data for
the patients in the multidose portion of the trial are presented in Figure 5. Consistent with the improvements reported in the single ascending dose study,
AK002 produced clinically significant improvement in patient symptoms in multiple symptoms across all three PROs used in the study.

Figure 9. Patient Reported Outcomes from multi-dose portion of ISM trial

MSQ Symptom (N=8) (1)
Hives
Flushing (#)
Abdominal Pain
Diarrhea
Itching
Headache
Fatigue
Difficulty Concentrating
Muscle Pain
Joint Pain

(1)

The MSQ was not available for use in 3 patients.

10

Median Change from Baseline
at Weeks 21 to 22
-56%
-38%
-46%
-60%
-49%
-50%
-47%
-59%
-27%
-26%

 
 
 
MAS2 Symptom (N=11)
Itching
Hives
Flushing
Abdominal Pain
Diarrhea
Headache
Fatigue
Difficulty Concentrating
Bone-Joint-Muscle Pain

MC-QoL Domain (N=11)
Symptoms
Social Life / Functioning
Emotions
Skin

Median Change from Baseline
at Weeks 21 to 22
-53%
-59%
-57%
-84%
-72%
-57%
-22%
-30%
-22%

Median Change from Baseline
at Weeks 21 to 22
-39%
-42%
-57%
-44%

AK002 has generally been well tolerated in the Phase 1 ISM study. The most common adverse event was the occurrence of mild to moderate

infusion-related reactions (flushing, feeling of warmth, headache, nausea or dizziness), which occurred mostly during the first infusion.

Chronic Urticarias – Cholinergic Urticaria, Chronic Spontaneous Urticaria, Symptomatic Dermatographism

Disease Overview

CU is a group of mast cell driven skin conditions which are characterized by recurrent transient pruritic wheal and flare type skin reactions and, in
roughly 40% of patients, angioedema. Symptoms include hives, itching, redness, raised welts, burning, warmth, tingling and irritation of the skin. Patients
with CU are often severely impaired in their quality of life, with negative effects on sleep, daily activities, school/work life and social interactions. Urticaria
symptoms are caused by degranulation of dermal mast cells, with IgE signaling believed to contribute to mast cell activation in many cases. The most
common forms of CU are chronic spontaneous urticaria (“CSU”), cholinergic urticaria and symptomatic dermatographism.

Despite sharing similar inflammatory pathology, urticarias differ in the triggers that cause the inflammatory response. Cholinergic urticaria patients
typically develop symptoms a few minutes after exercise or passive warming in a bath or shower. In some cholinergic patients, emotional stress or hot and
spicy food or beverages can also elicit symptoms. Symptomatic dermatographism is characterized by hiving and itching following a minor stroking pressure,
rubbing or scratching of the skin. In CSU, itchy, wheal-and-flare-type skin reactions spontaneously appear on the skin at any time of the day or night. In most
CSU patients, an underlying cause of CSU cannot be identified making a causal and/or curative treatment difficult. We conservatively estimate that
approximately 200,000-500,000 patients with severe CSU, cholinergic urticaria and symptomatic dermatographism could be candidates for therapy with
AK002 in the U.S.

Current Therapies and Limitations

The current treatment guidelines for the management of all forms of urticaria recommend the use of non-sedating oral H1-antihistamines as first-line

therapy. For patients that do not respond to standard doses of H1-antihistamines, doses are increased to as high as four times the standard dose. Though this
can increase the response rates, side effects also increase, including sedation and anticholinergic effects, such as dry mouth, blurred vision, urinary retention
and constipation. Patients that do not respond to or are unable to tolerate high dose antihistamines have few options. For cholinergic urticaria and
symptomatic dermatographism patients, it is recommended that they avoid target triggers such as overheated spaces, hot baths/showers, exercise, specific
food allergens and excessive

11

 
 
 
contact. For antihistamine refractory patients with CSU, the only currently approved treatment is omalizumab, a monoclonal anti-IgE antibody. Unfortunately,
approximately 60% of CSU patients continue to have symptoms despite treatment with omalizumab (“Xolair”).

Clinical Results

We conducted an open-label Phase 2 trial with AK002 in patients with uncontrolled chronic urticaria despite treatment with H1 antihistamines at up
to 4x the labeled dose. The study enrolled four cohorts consisting of 13 xolair naïve patients with chronic spontaneous urticaria patients, 11 Xolair refractory
patients with chronic spontaneous urticaria (average duration of Xolair treatment 10 months at doses as high as 600mg/month), 11 patients with cholinergic
urticaria, and 10 patients with symptomatic dermographism. Baseline symptom scores, as measured by Urticaria Control Test (“UCT”) and Urticaria Activity
Score (“UAS7”) were collected over a 4-week screening period. Patients with baseline UCT scores of less than 12, indicative of poorly controlled urticaria,
were enrolled in the study and treated with up to 6 doses of AK002 given once monthly. Patients received an initial dose of 0.3 mg/kg at baseline, followed by
a dose of 1.0 mg/kg on day 28, and then received monthly doses of either 1.0 or 3.0 mg/kg for a total of 6 doses. The primary endpoint of the trial was patient-
reported symptoms measured by the UCT. Secondary endpoints include safety and tolerability, as well as patient-reported symptoms as measured by UAS7
(CSU patients only), pulse controlled ergometry (cholinergic urticaria patients only), and FRIC testing (symptomatic dermographism patients only).

Results for each cohort are shown in Figure 10. Patients in all cohorts reported high levels of disease control and many patients experienced

complete resolution of symptoms while receiving AK002. Importantly, AK002 also produced high levels of response in patients that were refractory to
Xolair, the only approved biologic treatment option, suggesting that AK002 could the treatment of choice for antihistamine refractory CU patients.
Additionally, AK002 depleted blood eosinophils in subjects throughout the dosing period.

Figure 10. Data from the Phase 2 CU clinical trial

Xolair Naïve CSU Cohort (N=13)
Average UCT Score
UCT Complete Response
UCT Partial Response
UCT No Response
Average UAS7 Score
Proportion with UAS7 ≤ 6
Proportion with UAS7 = 0
Proportion with ISS7 = 0
Proportion with HSS7 = 0

Xolair Failure Chronic Spontaneous Urticaria Cohort (N=11)
Average UCT Score
UCT Complete Response
UCT Partial Response
UCT No Response
Average UAS7
Proportion with UAS7 ≤ 6
Proportion with UAS7 = 0
Proportion with ISS7 = 0
Proportion with HSS7 = 0

12

Baseline
3.2
—
—
—
18.5
0%
0%
0%
0%

Baseline
3.7
—
—
—
28.7
0%
0%
0%
0%

Week 22
14.2
12/13 (92%)
0/13 (0%)
1/13 (8%)
4.6 (-75%)
8/13 (62%)
7/13 (54%)
7/13 (54%)
10/13 (77%)

Week 22
8.5
4/11 (36%)
2/11 (18%)
5/11 (45%)
14.7 (-49%)
2/11 (18%)
1/11 (9%)
1/11 (9%)
1/11 (9%)

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cholinergic Urticaria Cohort (N=11)
Average UCT Score
UCT Complete Response
UCT Partial Response
UCT No Response
Pulse Control Ergometry Exercise Test Negative

Symptomatic Dermographism Cohort (N=10)
Average UCT Score
UCT Complete Response
UCT Partial Response
UCT No Response
FRIC Test Itch Negative
FRIC Test Hives Negative (Critical Friction Threshold)

Baseline
5.4
—
—
—
0%

Baseline
5.7
—
—
—
0%
0%

Week 22
11.8
9/11 (82%)
0/11 (0%)
2/11 (18%)
7/7 (100%)

Week 22
9.1
4/10 (40%)
3/10 (30%)
3/10 (30%)
5/10 (50%)
4/10 (40%)

AK002 has generally been well tolerated in the Phase 2 CU study. The most common adverse event was the occurrence of mild to moderate IRRs

(flushing, feeling of warmth, headache, nausea or dizziness), which occurred in 34% of first in fusions and 4% of subsequent infusions.

Severe Allergic Conjunctivitis

Disease Overview

Atopic keratoconjunctivitis (“AKC”), vernal keratoconjunctivitis (“VKC”) and perennial allergic conjunctivitis (“PAC”) are a set of allergic ocular
conjunctival diseases primarily associated with an IgE-mediated hypersensitivity reaction. We are focused on the severe forms of these diseases, which are
collectively referred to as severe allergic conjunctivitis (“SAC”). These conditions are often caused by airborne allergens, such as grass and tree pollens,
coming into contact with the eyes, which induces IgE mediated mast cell degranulation and allergic inflammation. The inflammatory mediators released by
the mast cell result in inflammation and the infiltration of eosinophils, neutrophils and other immune cells. Eosinophils and mast cells are believed to be the
main effector cells, with protease secretions directly damaging the conjunctiva, and play a key role in triggering and maintaining the inflammatory response.
Symptoms include itching, hyperemia, light sensitivity (photophobia), pain, eye discharge and the sensation of having a foreign body in the eye. These
symptoms can affect quality of life and daily activities, such as reading, driving and being in bright outdoor environments. In addition, patients with untreated
disease, in particular those with VKC and AKC, can experience remodeling of the ocular surface tissues that can lead to vision loss. In addition to the primary
symptoms of allergic conjunctivitis, a high correlation of allergic rhinitis, allergic asthma and atopic dermatitis comorbidities occur in this patient population.
We believe that approximately 50,000-150,000 patients in the United States suffer from severe AKC, VKC or PAC and could be candidates for treatment with
AK002.

Current Therapies and Limitations

PAC is treated with topical antihistamines and mast cell stabilizers. More serious forms are treated with topical and systemic corticosteroids,
cyclosporine and other immunomodulatory drugs. There are no drugs approved for AKC and VKC, and as a result, patients are typically treated similarly to
patients with PAC. Unfortunately, many patients continue to have symptoms despite these topical and/or systemic treatments and many of the drugs are not
suitable for long-term treatment due to undesirable side effects.

Phase 1 Trial

We are conducting an open-label Phase 1 trial with AK002 in patients with SAC. The trial is enrolling patients with three different forms of allergic

conjunctivitis: AKC, VKC and PAC. Thirty patients enrolled (13 AKC, 16 PAC and 1 VKC) and will receive six monthly doses of AK002. The primary
endpoint of the trial will be safety and tolerability. Key secondary endpoints include patient-reported symptom measures of ocular itch, pain, lacrimation,
photophobia and foreign body sensation. In addition, a number of patients enrolled in the trial will also have

13

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
concomitant allergic rhinitis, asthma, and atopic dermatitis. Consequently, it may be possible to evaluate response to treatment with AK002 in these allergic
conditions as well. Given that the trial is an open-label study, it is not designed to show statistical significance. We expect to report data from this trial in the
first or second quarter of 2019.

Figure 11. SAC Phase 1 Trial Design

Design

Key Endpoints

•Open-label trial

•30 patients – 3 cohorts

—Atopic keratoconjunctivitis

—Vernal keratoconjunctivitis

—Perennial allergic conjunctivitis

•Multiple doses (x6)

•0.3 mg/kg, then 1.0 mg/kg, then 1.0 or 3.0 mg/kg

Preclinical Results

AK002 Results in Animal Disease Models Suggest Broad Activity

Primary

•Safety and tolerability

Secondary

•Patient reported outcomes: ocular itch, pain, lacrimation,

photophobia, foreign body sensation

•Assessment of comorbid atopic dermatitis, asthma and/or rhinitis

Because Siglec-8 is found only in cells of humans and certain other primates, we have developed a proprietary Siglec-8 transgenic mouse, in which

Siglec-8 is expressed with a similar tissue distribution to humans and is functionally active. The transgenic mouse provides us with a proprietary tool to assess
the safety, tolerability and activity of anti-Siglec-8 antibodies.

AK002 has completed short- and long-term toxicity studies in Siglec-8 transgenic mice. Chronic weekly dosing for six months with AK002 in
transgenic mice at dose levels of 50 or 100 mg/kg resulted in no adverse AK002-related findings in mortality, clinical observations, body weight, food
consumption and anatomic pathology after the end of dosing. Non-adverse findings included decreases in eosinophil counts in both sexes at 50 mg/kg/week,
which persisted through the recovery period. These findings reflect the expected pharmacology of AK002. The no-observed-adverse-effect-level of AK002
after chronic dosing for six months was 100 mg/kg/week.

We have shown that AK002 or antibodies to Siglec-8 have broad activity in animal disease models (eosinophilic gastroenteritis, anaphylaxis, fibrosis

and chronic obstructive pulmonary disease) and in human ex vivo diseased tissue (eosinophilic gastrointestinal disease, mastocytosis, atomic dermatitis and
lung). In these models, anti-Siglec-8 antibodies have significantly reduced eosinophil and inhibited mast cells. The activity in these models suggests AK002
has the potential to treat eosinophil and mast cell inflammation in a number of disease settings and highlights AK002’s ability to inhibit the inflammatory
cascade triggered by different activating signals.

Anti-Siglec-8 Antibody Inhibits IgE Mediated Systemic Anaphylaxis in Mouse Model

The ability of an anti-Siglec-8 antibody to inhibit IgE-mediated mast cell activation was demonstrated in a mouse model of systemic anaphylaxis.

Anaphylaxis occurs due to IgE-mediated release of inflammatory mediators and cytokines from mast cells, which results in vasodilation, a reduction in core
body temperature, itchiness and bronchoconstriction, among other symptoms. In this model, “humanized” mice engrafted with human immune cells were
pretreated with an anti-Siglec-8 antibody or an isotype control antibody, administered an allergen-specific IgE, and 24 hours later, anaphylaxis was triggered
using an allergen. Mice treated with the isotype control antibody plus IgE and allergen displayed symptoms of anaphylaxis and body temperature decreases
that peaked 10 to 40 minutes after inducing anaphylaxis. In contrast, mice treated with the anti-Siglec-8 antibody plus IgE and allergen displayed no
observable symptoms and had no significant changes in core body temperature.

14

 
 
 
 
Figure 12. Effects of Anti-Siglec-8 in a Mouse Model of Systemic Anaphylaxis

Anti-Siglec-8 Antibody Decreases Bleomycin Induced Lung Fibrosis in Mouse Model

Lung fibrosis induced by bleomycin is believed to be due to the increased expression of IL-33. IL-33 induces mast cells to release mediators that

activate fibroblasts leading to fibrosis and collagen deposition. In this model, lung fibrosis was induced by administering bleomycin to Siglec-8 transgenic
mice every other day for 30 days. On days 14, 21 and 28, an anti-Siglec-8 or isotype control antibody was administered. Fibrosis was assessed on day 30 for
anti-Siglec-8 or isotype control antibody treated mice and compared to sham treated mice (mice that did not receive bleomycin). Relative to control antibody
mice, mice treated with an anti-Siglec-8 antibody displayed minimal fibrotic changes. In addition, the bronchoalveolar lavage (“BAL”) of anti-Siglec-8
treated mice displayed reduced levels of infiltrating leukocytes that were similar to sham treated animals.

15

 
Figure 13. Leukocyte Counts and Lung Fibrosis in Bleomycin Lung Fibrosis Model

Anti-Siglec-8 Antibody Inhibits IL-33/TSLP Activation of Mast Cells from Human Skin

IL-33 combined with TSLP is a potent activator of mast cells and results in increased expression of the mast cell activation marker CD63. Mast cells

isolated from skin showed a 20% increase in the expression of CD63 after overnight exposure to IL-33 and TSLP. In contrast, skin mast cells treated with
AK002 along with IL-33 and TSLP did not show increased activation, with CD63 levels remaining similar to control levels (no IL-33 and TSLP exposure). In
addition, the levels of chemokines CCL2 and ENA78 did not increase after stimulation with IL-33 and TSLP in the presence of AK002. Chemokines are
known to recruit and activate cells of the innate and adaptive immune system. By normalizing chemokine secretions, AK002 may be able to prevent further
recruitment of immune cells and thereby interrupt the inflammatory cascade.

Figure 14. Ex Vivo Skin Tissue Response to IL33/TSLP

AK001

We initially began developing two product candidates, AK001 and AK002, both of which are monoclonal antibodies targeting Siglec-8. These

compounds entered clinical development in 2015 and 2016, respectively. Due to the greater activity of AK002, we decided to focus our development efforts
on AK002 and discontinued the

16

 
    
development of AK001 in 2017. We have no current plans to continue development of AK001, but may choose to do so in the future.

Preclinical Programs

We are developing two additional antibodies targeting novel immune system receptors for the treatment of cancer. These antibodies are being

assessed in a variety of animal models.

Competition

The biotechnology and pharmaceutical industries are characterized by rapid technological advancement, significant competition and an emphasis on

intellectual property. We face potential competition from many different sources, including major and specialty pharmaceutical and biotechnology companies,
academic research institutions, governmental agencies and public and private research institutions. Any product candidates that we successfully develop and
commercialize will compete with current therapies and new therapies that may become available in the future. We believe that the key competitive factors
affecting the success of any of our product candidates will include efficacy, safety profile, convenience, cost, level of promotional activity devoted to them
and intellectual property protection.

We are not aware of any other company or organization that is conducting clinical trials of a product candidate that targets both eosinophils and mast
cells, including any product candidate that specifically targets Siglec-8. The competition we may face with respect to each of the indications we are targeting
with AK002 includes:

•

•

•

•

EG, EGE and EoE. Currently, there are no therapies that have been approved by the FDA specifically for EG, EGE or EoE. Several
companies, including but not limited to, Regeneron, AstraZeneca, Celgene, Shire, and Dr. Falk Pharma have or are conducting studies in
these indications.

ISM. We are not aware of any FDA-approved treatment options that target the underlying causes of ISM. Blueprint Medicines initiated a
phase 2 trial evaluating avapritinib in smoldering systemic mastocytosis and ISM in the second half of 2018.

CU. Xolair is a FDA-approved drug approved for the treatment of CSU. We are not aware of any FDA-approved treatment options for
cholinergic urticaria or symptomatic dermatographism. Companies conducting studies in chronic spontaneous urticaria include: Novartis
Pharmaceuticals (ligelizumab), Genentech (fenebrutinib), and Gossamer Bio (GB100).

SAC. The products that are currently available for treatment of SAC only provide temporary relief for most patients and have little effect on
moderate to severe cases. We are not aware of any other company specifically targeting SAC.

Many of the companies against which we may compete have significantly greater financial resources and expertise in research and development,

manufacturing, preclinical testing, conducting clinical trials, obtaining regulatory approvals and marketing approved products than we do. Smaller or early-
stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and established companies. These
competitors also compete with us in recruiting and retaining qualified scientific and management personnel and establishing clinical trial sites and patient
registration for clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs.

Sales and Marketing

In light of our stage of development, we currently have limited marketing and sales capabilities. We hold worldwide commercialization rights to all of

our product candidates. We intend to retain the rights to our compounds in key markets, and plan to build our own focused, specialty sales force to
commercialize approved products in both the United States and Europe.

17

 
 
 
 
 
Manufacturing

We must manufacture drug product for clinical trial use in compliance with cGMP regulations. The cGMP regulations include requirements relating

to organization of personnel, buildings and facilities, equipment, control of components and drug product containers and closures, production and process
controls, packaging and labeling controls, holding and distribution, laboratory controls, records and reports and returned or salvaged products. The
manufacturing facilities for our product candidates must meet cGMP requirements and FDA or comparable foreign regulatory authority’s satisfaction before
any product is approved and our commercial products can be manufactured. Our third-party manufacturers will also be subject to periodic inspections of
facilities by the FDA and other foreign authorities, including procedures and operations used in the testing and manufacture of our products to assess our
compliance with applicable regulations.

We do not currently have the infrastructure or internal capability to manufacture our product candidates for use in clinical development and

commercialization. We rely, and expect to continue to rely, on third-party manufacturers for the production of our product candidates in compliance with
cGMP requirements clinical trials under the guidance of members of our organization. In the case of AK002, we rely on a single third-party manufacturer,
Lonza, and we currently have no alternative manufacturer in place. We do not have long-term supply agreements and we purchase our required drug product
on a purchase order basis. 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. We have personnel with significant technical, manufacturing, analytical, quality, regulatory, including cGMP, and project
management experience to oversee our third-party manufacturers and to manage manufacturing and quality data and information for regulatory compliance
purposes.

Failure to comply with statutory and regulatory requirements subjects a manufacturer to possible legal or regulatory action, including warning letters,
the seizure or recall of products, injunctions, consent decrees placing significant restrictions on or suspending manufacturing operations and civil and criminal
penalties. Contract manufacturers often encounter difficulties involving production yields, quality control and quality assurance, as well as shortages of
qualified personnel. Any of these actions or events could have a material impact on the availability of our products.

In-Licensing Agreements

We have entered into two in-licensing agreements with third-parties for the development, manufacturing and commercialization of our products

including AK002. The specific terms of the individual agreements are discussed in further detail below. In aggregate, we anticipate our total royalty
obligation on AK002 from these two agreements will be a mid single digit percentage of net sales by us and our affiliates and sublicensees.

Exclusive License Agreement with The Johns Hopkins University

We have exclusively licensed intellectual property from The Johns Hopkins University (“JHU”) in a license agreement dated December 20, 2013 and

amended and restated September 30, 2016. In December 2013, we entered into an agreement with JHU for an exclusive worldwide license to develop and
commercialize for the treatment and prevention of disease products covered by the JHU licensed patent rights or derived from materials provided by JHU. In
September 2016, we and JHU amended and restated the license agreement to an exclusive worldwide license to develop and commercialize in all fields
products covered by the licensed patent rights, or derived from materials provided by JHU.

Under the license agreement we are obligated to make payments to JHU for therapeutic products aggregating up to $4.0 million based on achieving

specified development and regulatory approval milestones. We will also pay single-digit royalties to JHU based on net sales of each licensed therapeutic
product by us and our affiliates and sublicensees and have up to a low six digit dollar minimum annual royalty payment. In addition, in the event we
sublicense the JHU intellectual property, we are obligated to pay JHU a specified portion of income we receive from sublicensing.

Our royalty obligation with respect to each licensed product in a country extends until the later of the expiration of the last-to-expire patent licensed

from JHU covering the licensed product in the country or the

18

 
expiration of a specified number of years after the first commercial sale of any licensed product in any country. The latest possible expiration date of patents
licensed under the agreement is 2021 in all applicable countries, in the absence of any patent extensions that may be available for such patents.

Non-Exclusive License Agreement with BioWa Inc. and Lonza Sales AG

We have licensed on a non-exclusive basis intellectual property from BioWa Inc. (“BioWa”) and Lonza pursuant to a license agreement dated
October 31, 2013. The agreement grants Allakos a non-exclusive worldwide license to develop and commercialize certain products manufactured in a
particular mammalian host cell line for the prevention, diagnosis or treatment of human disease.

Under the license agreement, we are obligated to pay BioWa an annual commercial license fee of $40,000 until such time as BioWa receives royalty
payments. We may also become obligated to make payments to BioWa aggregating up to $41.0 million based on achieving specified milestones, and to pay
low single-digit royalties to BioWa based on net sales of licensed product by us and our affiliates and sublicensees. Our royalty obligation to BioWa with
respect to each licensed product in a country extends until the later of the expiration of the last-to-expire licensed patent covering the licensed product in the
country or the expiration of either regulatory exclusivity or a specified number of years after the first commercial sale of the licensed product in the country,
whichever is later.

We may also pay low single-digit royalties to Lonza based on net sales of each licensed product by us and our affiliates and sublicensees. We will be

required to pay an annual license fees to Lonza if we (or our strategic partner) manufactures a particular product using the particular cell line, or if we utilize a
third party CMO to manufacture a product using such system. Our royalty obligation to Lonza with respect to each licensed product in a country extends until
the later of the expiration of the last-to-expire licensed patent covering the licensed product in the country or a specified number of years after the first
commercial sale of the licensed product in the country, whichever is later. The latest possible expiration date of patents licensed under the agreement is 2021
or 2023, depending on the country, in the absence of any patent extensions that may be available for such patents.

Government Regulation

Government authorities in the United States 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 biological products. Generally, before a new drug or biologic can be marketed,
considerable data demonstrating its quality, safety and efficacy 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 United States, the FDA regulates drugs under the Federal Food, Drug, and Cosmetic Act (“FDCA”) and its implementing regulations, and

biologics under the FDCA, the Public Health Service Act (“PHSA”) and their implementing regulations. Both drugs and biologics 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,

19

 
disgorgement and civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us.

Any future product candidates must be approved by the FDA through either a BLA or NDA process before they may be legally marketed in the

United States. The process generally involves the following:

•

•

•

•

•

•

•

•

•

•

completion of extensive preclinical studies in accordance with applicable regulations, including studies conducted in accordance with good
laboratory practice (“GLP”), requirements;

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

approval by an independent institutional review board (“IRB”), or ethics committee at each clinical trial site before each trial may be
initiated;

performance of adequate and well-controlled human clinical trials in accordance with applicable IND regulations, good clinical practice
(“GCP”), 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 or BLA;

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

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

potential FDA audit of the preclinical and/or clinical trial sites that generated the data in support of the NDA or BLA;

FDA review and approval of the NDA or BLA, including consideration of the views of any FDA advisory committee, prior to any
commercial marketing or sale of the drug or biologic in the United States; and

compliance with any post-approval requirements, including the potential requirement to implement a Risk Evaluation and Mitigation Strategy
(“REMS”), and the potential requirement to conduct post-approval studies.

The data required to support an NDA or BLA 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. The sponsor 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 trials 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 GLP 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 animal tests of

20

 
 
 
 
 
 
 
 
 
 
 
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 related to one or more proposed clinical trials and places the trial on clinical hold. In
such a case, the IND sponsor and the FDA must resolve any outstanding concerns before the clinical trial can begin. As a result, submission of an IND may
not result in the FDA allowing clinical trials to commence.

Clinical Trials

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 trial sponsor’s control, in accordance with GCP requirements, which include the
requirement that all research subjects provide their informed consent for their participation in any clinical trial. Clinical trials 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 trial must be reviewed and approved by an IRB for each institution at which the clinical trial will be conducted to ensure that the
risks to individuals participating in the clinical trials 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 trial subject or his or her legal representative, and must monitor the clinical trial until completed. There
also are requirements governing the reporting of ongoing clinical trials and completed clinical trial results to public registries.

A sponsor who wishes to conduct a clinical trial outside of the United States may, but need not, obtain FDA authorization to conduct the clinical trial
under an IND. If a foreign clinical trial is not conducted under an IND, the sponsor may submit data from the clinical trial to the FDA in support of an NDA
or BLA. The FDA will accept a well-designed and well-conducted foreign clinical trial not conducted under an IND if the trial was conducted in accordance
with GCP requirements and the FDA is able to validate the data through an onsite inspection if deemed necessary.

Clinical trials in the United States generally are conducted in three sequential phases, known as Phase 1, Phase 2 and Phase 3, and may overlap.

•

•

•

Phase 1 clinical trials 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 trials is to assess the metabolism, pharmacologic
action, tolerability and safety of the drug.

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

Phase 3 clinical trials generally involve a large number of 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 trials 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 trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial marketing approval. These trials 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 trials as a condition of approval of an NDA or BLA.

Progress reports detailing the results of the clinical trials, among other information, must be submitted at least annually to the FDA and written IND

safety reports must be submitted to the FDA and the investigators for serious

21

 
 
 
 
and unexpected suspected adverse events, findings from other studies suggesting a significant risk to humans exposed to the drug or biologic, findings from
animal or in vitro testing that suggest a significant risk for human subjects and any clinically important increase in the rate of a serious suspected adverse
reaction over that listed in the protocol or investigator brochure.

Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, if at all. The FDA or the sponsor may

suspend or terminate a clinical trial 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 trial at its institution if the clinical trial is not being conducted in
accordance with the IRB’s requirements or if the drug or biologic has been associated with unexpected serious harm to patients. Additionally, some clinical
trials are overseen by an independent group of qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board or committee.
This group provides authorization for whether a trial may move forward at designated check points based on access to certain data from the trial. Concurrent
with clinical trials, companies usually complete additional animal studies and also must develop additional information about the chemistry and physical
characteristics of the drug or biologic 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.

NDA/BLA Review Process

Following completion of the clinical trials, data are 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 trials are then submitted to the FDA as part of an NDA or BLA, along with proposed
labeling, chemistry and manufacturing information to ensure product quality and other relevant data. In short, the NDA or BLA is a request for approval to
market the drug or biologic for one or more specified indications and must contain proof of safety and efficacy for a drug or safety, purity and potency for a
biologic. The application may include both negative and ambiguous results of preclinical studies and clinical trials, as well as positive findings. Data may
come from company-sponsored clinical trials intended to test the safety and efficacy of a product’s use or from a number of 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 or BLA must be obtained before a drug or biologic may be
marketed in the United States.

Under the Prescription Drug User Fee Act (“PDUFA”), as amended, each NDA or BLA must be accompanied by a user fee. FDA adjusts the PDUFA

user fees on an annual basis. According to the FDA’s fee schedule, effective through September 30, 2016, the user fee for an application requiring clinical
data, such as an NDA or BLA, is $2.3 million. PDUFA also imposes an annual product fee for human drugs and biologics (approximately $97,750) and an
annual establishment fee (approximately $580,000) on facilities used to manufacture prescription drugs and biologics. 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 or BLAs for products designated as orphan drugs, unless the product also includes a non-orphan indication.

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

Before approving an NDA or BLA, the FDA will 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

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approve the product unless it determines that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure
consistent production of the product within required specifications. The FDA also may audit data from clinical trials to ensure compliance with GCP
requirements. Additionally, the FDA may refer applications for novel drug products or drug products 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 trial data, which could result in extensive discussions
between the FDA and the applicant during the review process. After the FDA evaluates an NDA or BLA, it will issue an approval letter or a Complete
Response Letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications. A Complete
Response Letter indicates that the review cycle of the application is complete and the application will not be approved in its present form. A Complete
Response Letter usually describes all of the specific deficiencies in the NDA or BLA identified by the FDA. The Complete Response Letter may require
additional clinical data, additional pivotal Phase 3 clinical trial(s) and/or other significant and time-consuming requirements related to clinical trials,
preclinical studies or manufacturing. If a Complete Response Letter is issued, the applicant may either resubmit the NDA or BLA, addressing all of the
deficiencies identified in the letter, or withdraw the application. Even if such data and information are submitted, the FDA may decide that the NDA or BLA
does not satisfy the criteria for approval. Data obtained from clinical trials are not always conclusive and the FDA may interpret data differently than we
interpret the same data.

Orphan Drugs

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug or biological product intended to treat a rare disease or condition,
which is generally a disease or condition that affects fewer than 200,000 individuals in the United States, or more than 200,000 individuals in the United
States and for which there is no reasonable expectation that the cost of developing and making the product available in the United States for this type of
disease or condition will be recovered from sales of the product.

Orphan drug designation must be requested before submitting an NDA or BLA. After the FDA grants orphan drug designation, the identity of the
therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan drug designation does not convey any advantage in or shorten the
duration of the regulatory review and approval process.

If a product that has orphan designation subsequently receives the first FDA approval for the disease or condition for which it has such designation,

the product is entitled to orphan drug exclusivity, which means that the FDA may not approve any other applications to market the same drug for the same
indication for seven years from the date of such approval, except in limited circumstances, such as a showing of clinical superiority to the product with orphan
exclusivity by means of greater effectiveness, greater safety or providing a major contribution to patient care or in instances of drug supply issues.
Competitors, however, may receive approval of either a different product for the same indication or the same product for a different indication but that could
be used off-label in the orphan indication. Orphan drug exclusivity also could block the approval of one of our products for seven years if a competitor
obtains approval before we do for the same product, as defined by the FDA, for the same indication we are seeking approval, or if a product candidate is
determined to be contained within the scope of the competitor’s product for the same indication or disease. If one of our products designated as an orphan
drug receives marketing approval for an indication broader than that which is designated, it may not be entitled to orphan drug exclusivity. Orphan drug status
in the European Union has similar, but not identical, requirements and benefits.

Expedited Development and Review Programs

The FDA has a fast track program that is intended to expedite or facilitate the process for reviewing new drugs and biologics that meet certain

criteria. Specifically, new drugs and biologics are eligible for fast track designation if they are intended to treat a serious or life threatening condition and
preclinical or clinical data demonstrate the potential to address unmet medical needs for the condition. Fast track designation applies to both the product and
the specific indication for which it is being studied. The sponsor can request the FDA to designate the product for fast

23

 
track status any time before receiving NDA or BLA approval, but ideally no later than the pre-NDA or pre-BLA meeting.

Any product submitted to the FDA for marketing, including under a fast track program, may be eligible for other types of FDA programs intended to

expedite development and review, such as priority review and accelerated approval. Any product is eligible for priority review if it treats a serious or life-
threatening condition and, if approved, would provide a significant improvement in safety and effectiveness compared to available therapies.

A product may also be eligible for accelerated approval, if it treats a serious or life-threatening condition and generally provides a meaningful
advantage over available therapies. In addition, it must demonstrate an effect on a surrogate endpoint that is reasonably likely to predict clinical benefit or on
a clinical endpoint that can be measured earlier than irreversible morbidity or mortality (“IMM”), which is reasonably likely to predict an effect on IMM or
other clinical benefit. As a condition of approval, the FDA may require that a sponsor of a drug or biologic receiving accelerated approval perform adequate
and well-controlled post-marketing clinical trials. If the FDA concludes that a drug or biologic shown to be effective can be safely used only if distribution or
use is restricted, it may require such post-marketing restrictions, as it deems necessary to assure safe use of the product.

Additionally, a drug or biologic may be eligible for designation as a breakthrough therapy if the product is intended, alone or in combination with one

or more other drugs or biologics, to treat a serious or life-threatening condition and preliminary clinical evidence indicates that the product may demonstrate
substantial improvement over currently approved therapies on one or more clinically significant endpoints. The benefits of breakthrough therapy designation
include the same benefits as fast track designation, plus intensive guidance from the FDA to ensure an efficient drug development program. Fast track
designation, priority review, accelerated approval and breakthrough therapy designation do not change the standards for approval, but may expedite the
development or approval process.

Abbreviated Licensure Pathway of Biological Products as Biosimilar or Interchangeable

The Patient Protection and Affordable Care Act, or Affordable Care Act (“ACA”), signed into law in 2010, includes a subtitle called the Biologics

Price Competition and Innovation Act of 2009 (“BPCIA”), created an abbreviated approval pathway for biological products shown to be highly similar to an
FDA-licensed reference biological product. The BPCIA attempts to minimize duplicative testing, and thereby lower development costs and increase patient
access to affordable treatments. An application for licensure of a biosimilar product must include information demonstrating biosimilarity based upon the
following, unless the FDA determines otherwise:

•

•

•

analytical studies demonstrating that the proposed biosimilar product is highly similar to the approved product notwithstanding minor
differences in clinically inactive components;

animal studies (including the assessment of toxicity); and

a clinical trial or trials (including the assessment of immunogenicity and PK or PD) sufficient to demonstrate safety, purity and potency in
one or more conditions for which the reference product is licensed and intended to be used.

In addition, an application must include information demonstrating that:

•

•

•

•

the proposed biosimilar product and reference product utilize the same mechanism of action for the condition(s) of use prescribed,
recommended or suggested in the proposed labeling, but only to the extent the mechanism(s) of action are known for the reference product;

the condition or conditions of use prescribed, recommended or suggested in the labeling for the proposed biosimilar product have been
previously approved for the reference product;

the route of administration, the dosage form and the strength of the proposed biosimilar product are the same as those for the reference
product; and

the facility in which the biological product is manufactured, processed, packed or held meets standards designed to assure that the biological
product continues to be safe, pure and potent.

24

 
 
 
 
 
 
 
 
Biosimilarity means that the biological product is highly similar to the reference product notwithstanding minor differences in clinically inactive

components; and that there are no clinically meaningful differences between the biological product and the reference product in terms of the safety, purity and
potency of the product. In addition, the law provides for a designation of “interchangeability” between the reference and biosimilar products, whereby the
biosimilar may be substituted for the reference product without the intervention of the health care provider who prescribed the reference product. The higher
standard of interchangeability must be demonstrated by information sufficient to show that:

•

•

•

the proposed product is biosimilar to the reference product;

the proposed product is expected to produce the same clinical result as the reference product in any given patient; and

for a product that is administered more than once to an individual, the risk to the patient in terms of safety or diminished efficacy of
alternating or switching between the biosimilar and the reference product is no greater than the risk of using the reference product without
such alternation or switch.

FDA approval is required before a biosimilar may be marketed in the United States. However, complexities associated with the large and intricate
structures of biological products and the process by which such products are manufactured pose significant hurdles to the FDA’s implementation of the law
that are still being worked out by the FDA. For example, the FDA has discretion over the kind and amount of scientific evidence—laboratory, preclinical
and/or clinical—required to demonstrate biosimilarity to a licensed biological product.

The FDA intends to consider the totality of the evidence, provided by a sponsor to support a demonstration of biosimilarity, and recommends that

sponsors use a stepwise approach in the development of their biosimilar products. Biosimilar product applications thus may not be required to duplicate the
entirety of preclinical and clinical testing used to establish the underlying safety and effectiveness of the reference product. However, the FDA may refuse to
approve a biosimilar application if there is insufficient information to show that the active ingredients are the same or to demonstrate that any impurities or
differences in active ingredients do not affect the safety, purity or potency of the biosimilar product. In addition, as with BLAs, biosimilar product
applications will not be approved unless the product is manufactured in facilities designed to assure and preserve the biological product’s safety, purity and
potency.

The submission of a biosimilar application does not guarantee that the FDA will accept the application for filing and review, as the FDA may refuse

to accept applications that it finds are insufficiently complete. The FDA will treat a biosimilar application or supplement as incomplete if, among other
reasons, any applicable user fees assessed under the Biosimilar User Fee Act of 2012 have not been paid. In addition, the FDA may accept an application for
filing but deny approval on the basis that the sponsor has not demonstrated biosimilarity, in which case the sponsor may choose to conduct further analytical,
preclinical or clinical studies and submit a BLA for licensure as a new biological product.

The timing of final FDA approval of a biosimilar for commercial distribution depends on a variety of factors, including whether the manufacturer of

the branded product is entitled to one or more statutory exclusivity periods, during which time the FDA is prohibited from approving any products that are
biosimilar to the branded product. The FDA cannot approve a biosimilar application for twelve years from the date of first licensure of the reference product.
Additionally, a biosimilar product sponsor may not submit an application for four years from the date of first licensure of the reference product. A reference
product may also be entitled to exclusivity under other statutory provisions. For example, a reference product designated for a rare disease or condition (an
“orphan drug”) may be entitled to seven years of exclusivity, in which case no product that is biosimilar to the reference product may be approved until either
the end of the twelve-year period provided under the biosimilarity statute or the end of the seven-year orphan drug exclusivity period, whichever occurs later.
In certain circumstances, a regulatory exclusivity period can extend beyond the life of a patent, and thus block biosimilarity applications from being approved
on or after the patent expiration date. In addition, the FDA may under certain circumstances extend the exclusivity period for the reference product by an
additional six months if the FDA requests, and the manufacturer undertakes, studies on the effect of its product in children, a so-called pediatric extension.

25

 
 
 
 
The first biological product determined to be interchangeable with a branded product for any condition of use is also entitled to a period of
exclusivity, during which time the FDA may not determine that another product is interchangeable with the reference product for any condition of use. This
exclusivity period extends until the earlier of: (1) one year after the first commercial marketing of the first interchangeable product; (2) 18 months after
resolution of a patent infringement against the applicant that submitted the application for the first interchangeable product, based on a final court decision
regarding all of the patents in the litigation or dismissal of the litigation with or without prejudice; (3) 42 months after approval of the first interchangeable
product, if a patent infringement suit against the applicant that submitted the application for the first interchangeable product is still ongoing or (4) 18 months
after approval of the first interchangeable product if the applicant that submitted the application for the first interchangeable product has not been sued.

Post-Approval Requirements

Following approval of a new product, the manufacturer and the approved product are subject to continuing regulation by the FDA, including, among

other things, monitoring and record-keeping requirements, requirements to report adverse experiences and comply with promotion and advertising
requirements, which include restrictions on promoting drugs for unapproved uses or patient populations (known as “off-label use”) and limitations on
industry-sponsored scientific and educational activities. Although physicians may prescribe legally available drugs for off-label uses, manufacturers may not
market or promote such uses. Prescription drug promotional materials must be submitted to the FDA in conjunction with their first use. Further, if there are
any modifications to the drug or biologic, including changes in indications, labeling or manufacturing processes or facilities, the applicant may be required to
submit and obtain FDA approval of a new NDA/BLA or NDA/BLA supplement, which may require the development of additional data or preclinical studies
and clinical trials.

The FDA may also place other conditions on approvals including the requirement for a REMS, to assure the safe use of the product. A REMS could
include medication guides, physician communication plans or elements to assure safe use, such as restricted distribution methods, patient registries and other
risk minimization tools. Any of these limitations on approval or marketing could restrict the commercial promotion, distribution, prescription or dispensing of
products. Product approvals may be withdrawn for non-compliance with regulatory standards or if problems occur following initial marketing.

The FDA may withdraw approval if compliance with regulatory requirements and standards is not maintained or if problems occur after the product
reaches the market. Later discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, or with
manufacturing processes, or failure to comply with regulatory requirements, may result in revisions to the approved labeling to add new safety information;
imposition of post-market studies or clinical studies to assess new safety risks or imposition of distribution restrictions or other restrictions under a REMS
program. Other potential consequences include, among other things:

•

•

•

•

•

•

restrictions on the marketing or manufacturing of the product, complete withdrawal of the product from the market or product recalls;

fines, warning letters or holds on post-approval clinical studies;

refusal of the FDA to approve pending applications or supplements to approved applications;

applications, or suspension or revocation of product license approvals;

product seizure or detention, or refusal to permit the import or export of products; or

injunctions or the imposition of civil or criminal penalties.

The FDA strictly regulates marketing, labeling, advertising and promotion of products that are placed on the market. Drugs and biologics may be
promoted only for the approved indications and in accordance with the provisions of the approved label. The FDA and other agencies actively enforce the
laws and regulations prohibiting the promotion of off-label uses, and a company that is found to have improperly promoted off-label uses may be subject to
significant liability.

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Other U.S. Regulatory Matters

Manufacturing, sales, promotion and other activities following product approval are also subject to regulation by numerous regulatory authorities in
the United States in addition to the FDA, including the Centers for Medicare & Medicaid Services, other divisions of the Department of Health and Human
Services, the Department of Justice, the Drug Enforcement Administration, the Consumer Product Safety Commission, the Federal Trade Commission, the
Occupational Safety & Health Administration, the Environmental Protection Agency and state and local governments.

For example, in the United States, sales, marketing and scientific and educational programs also must comply with state and federal fraud and abuse

laws. These laws include the federal Anti-Kickback Statute, which makes it illegal for any person, including a prescription drug manufacturer (or a party
acting on its behalf), to knowingly and willfully solicit, receive, offer or pay any remuneration that is intended to induce or reward referrals, including the
purchase, recommendation, order or prescription of a particular drug, for which payment may be made under a federal healthcare program, such as Medicare
or Medicaid. Violations of this law are punishable by up to five years in prison, criminal fines, administrative civil money penalties and exclusion from
participation in federal healthcare programs. Moreover, the ACA provides that the government may assert that a claim including items or services resulting
from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims Act.

Pricing and rebate programs must comply with the Medicaid rebate requirements of the U.S. Omnibus Budget Reconciliation Act of 1990 and more
recent requirements in the ACA. If products are made available to authorized users of the Federal Supply Schedule of the General Services Administration,
additional laws and requirements apply. Products must meet applicable child-resistant packaging requirements under the U.S. Poison Prevention Packaging
Act. Manufacturing, sales, promotion and other activities also are potentially subject to federal and state consumer protection and unfair competition laws.

The distribution of biologic and pharmaceutical products is subject to additional requirements and regulations, including extensive record-keeping,

licensing, storage and security requirements intended to prevent the unauthorized sale of pharmaceutical products.

The failure to comply with any of these laws or regulatory requirements subjects firms to possible legal or regulatory action. Depending on the

circumstances, failure to meet applicable regulatory requirements can result in criminal prosecution, fines or other penalties, injunctions, requests for recall,
seizure of products, total or partial suspension of production, denial or withdrawal of product approvals or refusal to allow a firm to enter into supply
contracts, including government contracts. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur
significant legal expenses and divert our management’s attention from the operation of our business. Prohibitions or restrictions on sales or withdrawal of
future products marketed by us could materially affect our business in an adverse way.

Changes in regulations, statutes or the interpretation of existing regulations could impact our business in the future by requiring, for example:
(i) changes to our manufacturing arrangements; (ii) additions or modifications to product labeling; (iii) the recall or discontinuation of our products; or
(iv) additional record-keeping requirements. If any such changes were to be imposed, they could adversely affect the operation of our business.

U.S. Patent-Term Restoration and Marketing Exclusivity

Depending upon the timing, duration and specifics of FDA approval of any future product candidates, some 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 (the “Hatch-Waxman Act”). The Hatch-Waxman
Act permits restoration of the patent term of up to five years as compensation for patent term lost during product development and FDA regulatory review
process. Patent-term restoration, however, cannot extend the remaining term of a patent beyond a total of 14 years from the product’s approval date. The
patent-term restoration period is generally one-half the time between the effective date of an IND and the submission date of an NDA or BLA plus the time
between the submission date of an NDA or BLA and the approval of that application, except that the review period is reduced by any time during which the
applicant failed to exercise due diligence. Only one patent applicable to an approved drug is eligible for the extension and the application for the extension
must be submitted prior to the expiration of the patent. The U.S. PTO, in consultation with the FDA, reviews and approves the application for any patent term
extension or

27

 
restoration. In the future, we may apply for restoration of patent term for our currently owned or licensed patents to add patent life beyond its current
expiration date, depending on the expected length of the clinical trials and other factors involved in the filing of the relevant NDA or BLA.

Market exclusivity provisions under the FDCA also can delay the submission or the approval of certain applications. The FDCA provides a five-year
period of non-patent marketing exclusivity within the United States to the first applicant to gain approval of a NDA for a new chemical entity. A drug is a new
chemical entity if the FDA has not previously approved any other new drug containing the same active moiety, which is the molecule or ion responsible for
the action of the drug substance. During the exclusivity period, the FDA may not accept for review an abbreviated new drug application (“ANDA”), or a
505(b)(2) NDA submitted by another company for another version of such drug where the applicant does not own or have a legal right of reference to all the
data required for approval. However, an application may be submitted after four years if it contains a certification of patent invalidity or non-infringement.
The FDCA also provides three years of marketing exclusivity for a NDA, 505(b)(2) NDA or supplement to an existing NDA if new clinical investigations,
other than bioavailability studies, that were conducted or sponsored by the applicant are deemed by the FDA to be essential to the approval of the application,
for example, new indications, dosages or strengths of an existing drug. This three-year exclusivity covers only the conditions of use associated with the new
clinical investigations and does not prohibit the FDA from approving ANDAs for drugs containing the original active agent. Five-year and three-year
exclusivity will not delay the submission or approval of a full NDA. However, an applicant submitting a full NDA would be required to conduct or obtain a
right of reference to all of the preclinical studies and adequate and well-controlled clinical trials necessary to demonstrate safety and effectiveness.

A reference biological product is granted twelve years of data exclusivity from the time of first licensure of the product, and the FDA will not accept

an application for a biosimilar or interchangeable product based on the reference biological product until four years after the date of first licensure of the
reference product. “First licensure” typically means the initial date the particular product at issue was licensed in the United States. Date of first licensure
does not include the date of licensure of (and a new period of exclusivity is not available for) a biological product if the licensure is for a supplement for the
biological product or for a subsequent application by the same sponsor or manufacturer of the biological product (or licensor, predecessor in interest or other
related entity) for a change (not including a modification to the structure of the biological product) that results in a new indication, route of administration,
dosing schedule, dosage form, delivery system, delivery device or strength or for a modification to the structure of the biological product that does not result
in a change in safety, purity or potency. Therefore, one must determine whether a new product includes a modification to the structure of a previously licensed
product that results in a change in safety, purity or potency to assess whether the licensure of the new product is a first licensure that triggers its own period of
exclusivity. Whether a subsequent application, if approved, warrants exclusivity as the “first licensure” of a biological product is determined on a case-by-
case basis with data submitted by the sponsor.

European Union Drug Development

As in the United States, medicinal products can be marketed only if a marketing authorization from the competent regulatory agencies has been

obtained.

Similar to the United States, the various phases of preclinical and clinical research in the European Union are subject to significant regulatory

controls. Although the EU Clinical Trials Directive 2001/20/EC has sought to harmonize the EU clinical trials regulatory framework, setting out common
rules for the control and authorization of clinical trials in the EU, the EU Member States have transposed and applied the provisions of the Directive
differently. This has led to significant variations in the member state regimes. Under the current regime, before a clinical trial can be initiated it must be
approved in each of the EU countries where the trial is to be conducted by two distinct bodies: the National Competent Authority (“NCA”), and one or more
Ethics Committees (“ECs”). Under the current regime all suspected unexpected serious adverse reactions to the investigated drug that occur during the
clinical trial have to be reported to the NCA and ECs of the Member State where they occurred.

The EU clinical trials legislation currently is undergoing a transition process mainly aimed at harmonizing and streamlining clinical-trial

authorization, simplifying adverse-event reporting procedures, improving the supervision of clinical trials and increasing their transparency. Recently enacted
Clinical Trials Regulation EU No 536/2014 ensures that the rules for conducting clinical trials in the EU will be identical. In the meantime, Clinical Trials
Directive 2001/20/EC continues to govern all clinical trials performed in the EU.

28

 
European Union Drug Review and Approval

In the European Economic Area (“EEA”), which is comprised of the 27 Member States of the European Union (including Norway and excluding

Croatia), Iceland and Liechtenstein, medicinal products can only be commercialized after obtaining a Marketing Authorization (“MA”). There are two types
of marketing authorizations.

•

•

The Community MA is issued by the European Commission through the Centralized Procedure, based on the opinion of the Committee for
Medicinal Products for Human Use (“CHMP”), of the European Medicines Agency (“EMA”), and is valid throughout the entire territory of
the EEA. The Centralized Procedure is mandatory for certain types of products, such as biotechnology medicinal products, orphan medicinal
products, advanced-therapy medicines such as gene-therapy, somatic cell-therapy or tissue-engineered medicines and medicinal products
containing a new active substance indicated for the treatment of HIV, AIDS, cancer, neurodegenerative disorders, diabetes, auto-immune and
other immune dysfunctions and viral diseases. The Centralized Procedure is optional for products containing a new active substance not yet
authorized in the EEA, or for products that constitute a significant therapeutic, scientific or technical innovation or which are in the interest of
public health in the EU.

National MAs, which are issued by the competent authorities of the Member States of the EEA and only cover their respective territory, are
available for products not falling within the mandatory scope of the Centralized Procedure. Where a product has already been authorized for
marketing in a Member State of the EEA, this National MA can be recognized in another Member States through the Mutual Recognition
Procedure. If the product has not received a National MA in any Member State at the time of application, it can be approved simultaneously
in various Member States through the Decentralized Procedure. Under the Decentralized Procedure an identical dossier is submitted to the
competent authorities of each of the Member States in which the MA is sought, one of which is selected by the applicant as the Reference
Member State (“RMS”). The competent authority of the RMS prepares a draft assessment report, a draft summary of the product
characteristics (“SPC”), and a draft of the labeling and package leaflet, which are sent to the other Member States (referred to as the Member
States Concerned) for their approval. If the Member States Concerned raise no objections, based on a potential serious risk to public health,
to the assessment, SPC, labeling or packaging proposed by the RMS, the product is subsequently granted a national MA in all the Member
States (i.e., in the RMS and the Member States Concerned).

Under the above described procedures, before granting the MA, the EMA or the competent authorities of the Member States of the EEA make an

assessment of the risk-benefit balance of the product on the basis of scientific criteria concerning its quality, safety and efficacy.

Coverage and Reimbursement

Sales of our products will depend, in part, on the extent to which our products will be covered by third-party payors, such as government health

programs, commercial insurance and managed healthcare organizations. In the United States no uniform policy of coverage and reimbursement for drug or
biological products exists. Accordingly, decisions regarding the extent of coverage and amount of reimbursement to be provided for any of our products will
be made on a payor-by-payor basis. As a result, the coverage determination process is often a time-consuming and costly process that will require us to
provide scientific and clinical support for the use of our products to each payor separately, with no assurance that coverage and adequate reimbursement will
be obtained.

The United States government, state legislatures and foreign governments have shown significant interest in implementing cost containment
programs to limit the growth of government-paid health care costs, including price-controls, restrictions on reimbursement and requirements for substitution
of generic products for branded prescription drugs. For example, the ACA contains provisions that may reduce the profitability of drug products through
increased rebates for drugs reimbursed by Medicaid programs, extension of Medicaid rebates to Medicaid managed care plans, mandatory discounts for
certain Medicare Part D beneficiaries and annual fees based on pharmaceutical companies’ share of sales to federal health care programs. Adoption of general
controls and measures, coupled with the tightening of restrictive policies in jurisdictions with existing controls and measures, could limit payments for
pharmaceutical drugs.

The Medicaid Drug Rebate Program requires pharmaceutical manufacturers to enter into and have in effect a national rebate agreement with the

Secretary of the Department of Health and Human Services as a condition for

29

 
 
 
states to receive federal matching funds for the manufacturer’s outpatient drugs furnished to Medicaid patients. The ACA made several changes to the
Medicaid Drug Rebate Program, including increasing pharmaceutical manufacturers’ rebate liability by raising the minimum basic Medicaid rebate on most
branded prescription drugs from 15.1% of average manufacturer price (“AMP”), to 23.1% of AMP and adding a new rebate calculation for “line extensions”
(i.e., new formulations, such as extended release formulations) of solid oral dosage forms of branded products, as well as potentially impacting their rebate
liability by modifying the statutory definition of AMP. The ACA also expanded the universe of Medicaid utilization subject to drug rebates by requiring
pharmaceutical manufacturers to pay rebates on Medicaid managed care utilization and by enlarging the population potentially eligible for Medicaid drug
benefits. The Centers for Medicare & Medicaid Services (“CMS”), have proposed to expand Medicaid rebate liability to the territories of the United States as
well.

The Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (“MMA”), established the Medicare Part D program to provide a

voluntary prescription drug benefit to Medicare beneficiaries. Under Part D, Medicare beneficiaries may enroll in prescription drug plans offered by private
entities that provide coverage of outpatient prescription drugs. Unlike Medicare Part A and B, Part D coverage is not standardized. While all Medicare drug
plans must give at least a standard level of coverage set by Medicare, Part D prescription drug plan sponsors are not required to pay for all covered Part D
drugs, and each drug plan can develop its own drug formulary that identifies which drugs it will cover and at what tier or level. However, Part D prescription
drug formularies must include drugs within each therapeutic category and class of covered Part D drugs, though not necessarily all the drugs in each category
or class. Any formulary used by a Part D prescription drug plan must be developed and reviewed by a pharmacy and therapeutic committee. Government
payment for some of the costs of prescription drugs may increase demand for products for which we receive marketing approval. However, any negotiated
prices for our products covered by a Part D prescription drug plan likely will be lower than the prices we might otherwise obtain. Moreover, while the MMA
applies only to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own
payment rates. Any reduction in payment that results from the MMA may result in a similar reduction in payments from non-governmental payors.

For a drug product to receive federal reimbursement under the Medicaid or Medicare Part B programs or to be sold directly to U.S. government

agencies, the manufacturer must extend discounts to entities eligible to participate in the 340B drug pricing program. The required 340B discount on a given
product is calculated based on the AMP and Medicaid rebate amounts reported by the manufacturer. As of 2010, the ACA expanded the types of entities
eligible to receive discounted 340B pricing, although, under the current state of the law, with the exception of children’s hospitals, these newly eligible
entities will not be eligible to receive discounted 340B pricing on orphan drugs. In addition, as 340B drug prices are determined based on AMP and Medicaid
rebate data, the revisions to the Medicaid rebate formula and AMP definition described above could cause the required 340B discount to increase.

As noted above, the marketability of any products for which we receive regulatory approval for commercial sale may suffer if the government and

third-party payors fail to provide adequate coverage and reimbursement. An increasing emphasis on cost containment measures in the United States has
increased and we expect will continue to increase the pressure on pharmaceutical pricing. Coverage policies and third-party reimbursement rates may change
at any time. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive regulatory approval, less
favorable coverage policies and reimbursement rates may be implemented in the future.

In addition, in most foreign countries, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements

governing drug pricing and reimbursement vary widely from country to country. For example, the European Union provides options for its member states to
restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal
products for human use. A member state may approve a specific price for the medicinal product or it may instead adopt a system of direct or indirect controls
on the profitability of the company placing the medicinal product on the market. There can be no assurance that any country that has price controls or
reimbursement limitations for pharmaceutical products will allow favorable reimbursement and pricing arrangements for any of our

30

 
products. Historically, products launched in the European Union do not follow price structures of the United States and generally prices tend to be
significantly lower.

Employees

As of December 31, 2018, we had 62 full-time employees, 40 of whom were engaged in research and development activities. None of our employees

are represented by a labor union or covered under a collective bargaining agreement.

Facilities

Our corporate headquarters are currently located in Redwood City, California, where we lease 25,136 square feet of office, research and development
and laboratory space pursuant to a lease agreement that expires on July 31, 2029. The lease agreement includes an option to extend the term for an additional
period of five years. The new lease agreement also provides us a right of first offer to expand into available space on the first floor of the building. We will be
responsible for payment of our proportionate share of taxes and operating expenses for the building, in addition to monthly base rent in the initial amount of
$0.1 million, with 3% annual increases, which monthly base rent is abated for the first nine months of the lease term. We provided a security deposit under the
lease in the form of a letter of credit in the initial amount of $0.8 million, subject to a reduction to $0.4 million following the 45th month of the term and the
satisfaction of certain conditions. We believe that these existing facilities will be adequate for our near-term needs. If required, we believe that suitable
additional or alternative space would be available in the future on commercially reasonable terms.

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.

Intellectual Property

Our success depends in part on our ability to obtain and maintain proprietary protection for our product candidates, technology and know-how, to
operate without infringing the proprietary rights of others and to prevent others from infringing our proprietary rights. Our policy is to seek to protect our
proprietary position by, among other methods, pursuing and obtaining patent protection in the United States and in jurisdictions outside of the United States
related to our proprietary technology, inventions, improvements and product candidates that are important to the development and implementation of our
business. Our patent portfolio is intended to cover our product candidates and components thereof, their methods of use and processes for their manufacture,
our proprietary reagents and assays and any other inventions that are commercially important to our business. We also rely on trade secret protection of our
confidential information and know-how relating to our proprietary technology, platforms and product candidates.

We believe that we have substantial know-how and trade secrets relating to our technology and product candidates. Our patent portfolio as of March
7, 2019 contains seven issued and unexpired U.S. patents and eight pending U.S. patent applications that are solely owned or exclusively licensed by us and
numerous foreign counterparts of these patents and patent applications.

We have exclusively licensed from JHU five issued and unexpired U.S. patents and also foreign counterparts, with claims granted in Europe and

Japan. The JHU licensed patent rights include issued U.S. patents with claims that recite anti-Siglec-8 antibodies comprising the CDRs of a particular
antibody and methods of use a class of antibodies that bind to Siglec-8 for treating particular diseases. We own two granted U.S. patents that claim the active
component of AK002 (an anti-Siglec-8 antibody), pharmaceutical compositions comprising AK002, and methods for the treatment of particular diseases
using antibodies to Siglec-8, with a projected expiration date in 2035 in the absence of patent extensions. Similar patent applications are pending in Europe
and Japan. We have

31

 
eight further pending families of patent applications that include U.S. and foreign applications relating to methods of treatment for treating particular diseases
using antibodies to Siglec-8 and methods of delivering antibodies to Siglec-8. We have also filed patent applications with claims pending relating to
antibodies in preclinical development and methods for treating cancer with these antibodies. We also have a non-exclusive license to intellectual property
from BioWa and Lonza regarding the expression and manufacturing of monoclonal antibodies in particular mammalian host cell lines.

The term of individual patents depends upon the legal term for patents in the countries in which they are granted. In most countries, including the

United States, the patent term is generally 20 years from the earliest claimed filing date of a non-provisional patent application in the applicable country. In
the United States, a patent’s term may, in certain cases, be lengthened by patent term adjustment, which compensates a patentee for administrative delays by
the U.S. Patent and Trademark Office in examining and granting a patent, or may be shortened if a patent is terminally disclaimed over a commonly owned
patent or a patent naming a common inventor and having an earlier expiration date. The Hatch-Waxman Act permits a patent term extension of up to five
years beyond the expiration date of a U.S. patent as partial compensation for the length of time the drug is under regulatory review while the patent is in force.
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 applicable
to each regulatory review period 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 provisions are available in the European Union and certain other foreign jurisdictions to extend the term of a patent that covers an approved
drug. In the future, if and when our product candidates, including AK002, receive approval by the FDA or foreign regulatory authorities, we expect to apply
for patent term extensions on issued patents covering those products, depending upon the length of the clinical trials for each drug and other factors.
Expiration dates referred to above are without regard to potential patent term extension or other market exclusivity that may be available to us.

We also rely, in some circumstances, on trade secrets to protect our technology. However, trade secrets can be difficult to protect. We seek to protect
our proprietary technology and processes, in part, by confidentiality agreements with our employees, consultants, scientific advisors and contractors. We also
seek to preserve the integrity and confidentiality of our data and trade secrets by maintaining physical security of our premises and physical and electronic
security of our information technology systems.

Available Information

Our website is www.allakos.com. We use our website as a channel of distribution for company information, and financial and other material

information regarding our company is routinely posted and accessible on our website.

On the Investor Relations section of our website, we post or will post, as applicable, the following filings as soon as reasonably practicable after they
are electronically filed with or furnished to the Securities and Exchange Commission (the “SEC”): our Annual Report on Form 10-K (the “Annual Report”),
our Proxy Statement on Schedule 14A, our Quarterly Reports on Form 10-Q, our Current Reports on Form 8-K and any amendments to those reports filed or
furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended.

All of the information on our Investor Relations web page is available to be viewed free of charge. Information contained on our website is not part of

this Annual Report or our other filings with the SEC. We assume no obligation to update or revise any forward-looking statements in this Annual Report
whether as a result of new information, future events or otherwise, unless we are required to do so by law.

The SEC also maintains a website (www.sec.gov) that contains reports, proxy and information statements and other information regarding issuers that file
electronically with the SEC.

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Item 1A. Risk Factors.

Investing  in  our  common  stock  involves  a  high  degree  of  risk.  The  following  discussion  of  risk  factors  contains  forward-looking  statements.  You
should carefully consider the risks described below, as well as the other information 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.” The occurrence of
any of the events or developments described below could materially 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, financial condition, results of operations and growth prospects.

Risks Related to Our Financial Position and Need for Additional Capital

We are in the early stages of clinical drug development and have a very limited operating history and no products approved for commercial sale, which
may make it difficult for you 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.  We  were  incorporated  and  commenced  operations  in
2012, have no products approved for commercial sale and have not generated any revenue. Our operations to date have been limited to organizing and staffing
our company, business planning, raising capital, identifying and developing potential product candidates, conducting preclinical and clinical studies of our
product candidates, including Phase 1 and Phase 2 clinical trials of AK002, our lead compound. All of our product candidates currently under development,
other than AK002, are in preclinical development. We have not yet demonstrated our ability to successfully complete any large-scale, pivotal clinical trials,
obtain marketing approvals, manufacture a commercial-scale drug or arrange for a third-party to do so on our behalf or conduct sales and marketing activities.
As a result, it may be more difficult for you to accurately predict our future success or viability than it could be if we had a longer operating history.

In  addition,  as  a  business  with  a  limited  operating  history,  we  may  encounter  unforeseen  expenses,  difficulties,  complications,  delays  and  other
known and unknown factors and risks frequently experienced by early-stage biopharmaceutical companies in rapidly evolving fields. We also may need to
transition  from  a  company  with  a  research  focus  to  a  company  capable  of  supporting  commercial  activities.  We  have  not  yet  demonstrated  an  ability  to
successfully overcome such risks and difficulties, or to make such a transition. If we do not adequately address these risks and difficulties or successfully
make such a transition, our business will suffer.

We have incurred significant net losses since inception and we expect to continue to incur significant net losses for the foreseeable future.

We have incurred net losses in each reporting period since our inception, have not generated any revenue to date and have financed our operations
principally through the sale and issuance of common stock and preferred stock. Our net losses were $43.5 million, $23.6 million and $17.1 million for the
years ended December 31, 2018, 2017 and 2016. As of December 31, 2018, we had an accumulated deficit of $104.1 million. We have devoted substantially
all of our resources and efforts to research and development. Our lead compound, AK002, is in clinical development, and our other product candidates are in
preclinical development. As a result, we expect that it will be several years, if ever, before we generate revenue from product sales. Even if we succeed in
receiving marketing approval for and commercializing one or more of our product candidates, we expect that we will continue to incur substantial research
and development and other expenses in order to develop and market additional potential products.

We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future. The net losses we incur may fluctuate
significantly  from  quarter-to-quarter  such  that  a  period-to-period  comparison  of  our  results  of  operations  may  not  be  a  good  indication  of  our  future
performance. The size of our future net losses will depend, in part, on the rate of future growth of our expenses and our ability to generate revenue. Our prior
losses

33

 
and expected future losses have had and will continue to have an adverse effect on our working capital and our ability to achieve and maintain profitability.

Our ability to generate revenue and achieve profitability depends significantly on our ability to achieve a number of objectives.

Our business depends entirely on the successful development and commercialization of our product candidates. We currently generate no revenues
from sales of any products. We have no products approved for commercial sale and do not anticipate generating any revenue from product sales until some
time after we have successfully completed clinical development and received marketing approval for the commercial sale of a product candidate, if ever. Our
ability to generate revenue and achieve profitability depends significantly on our ability to achieve a number of objectives, including:

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•

•

•

•

•

successful  and  timely  completion  of  preclinical  and  clinical  development  of  our  lead  compound,  AK002,  and  any  other  future  product
candidates;

timely receipt of marketing approvals for AK002 and any future product candidates for which we successfully complete clinical development
and clinical trials from applicable regulatory authorities;

the extent of any required post-marketing approval commitments to applicable regulatory authorities;

developing  an  efficient  and  scalable  manufacturing  process  for  AK002  and  any  future  product  candidates,  including  establishing  and
maintaining commercially viable supply and manufacturing relationships with third-parties to obtain finished products that are appropriately
packaged for sale;

successful launch of commercial sales following any marketing approval, including the development of a commercial infrastructure, whether
in-house or with one or more collaborators;

a continued acceptable safety profile following any marketing approval;

commercial  acceptance  of  AK002  and  any  future  product  candidates  as  viable  treatment  options  by  patients,  the  medical  community  and
third-party payors;

addressing any competing technological and market developments;

identifying, assessing, acquiring and developing new product candidates;

obtaining and maintaining patent protection, trade secret protection and regulatory exclusivity, both in the United States and internationally;

protection of our rights in our intellectual property portfolio, including our licensed intellectual property;

negotiating  favorable  terms  in  any  collaboration,  licensing  or  other  arrangements  that  may  be  necessary  to  develop,  manufacture  or
commercialize our product candidates; and

attracting, hiring and retaining qualified personnel.

We may never be successful in achieving our objectives and, even if we do, may never generate revenue that is significant or large enough to achieve
profitability. If we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to become and
remain profitable would decrease the value of our company and could impair our ability to maintain or further our research and development efforts, raise
additional necessary capital, grow our business and/or continue our operations.

We will require substantial additional capital to finance our operations. If we are unable to raise such capital when needed, or on acceptable terms, we
may be forced to delay, reduce and/or eliminate one or more of our research and drug development programs or future commercialization efforts.

Developing pharmaceutical products, including conducting preclinical studies and clinical trials, is a very time-consuming, expensive and uncertain
process that takes years to complete. We expect our expenses to increase in connection with our ongoing activities, particularly as we conduct clinical trials
of, and seek marketing approval for, AK002 and our other product candidates. In addition, if we obtain marketing approval for any of our product

34

 
 
 
 
 
 
 
 
 
 
 
 
 
 
candidates, we expect to incur significant commercialization expenses related to drug sales, marketing, manufacturing and distribution. We have also incurred
and expect to continue to incur additional costs associated with operating as a public company. Accordingly, we will need to obtain substantial additional
funding in order to maintain our continuing operations. If we are unable to raise capital when needed or on acceptable terms, we may be forced to delay,
reduce and/or eliminate one or more of our research and drug development programs or future commercialization efforts.

As of December 31, 2018, we had $178.9 million in cash, cash equivalents and marketable securities, which includes proceeds from our initial public
offering (“IPO”) and concurrent private placement that we completed on July 23, 2018. We believe that our existing cash, cash equivalents and marketable
securities will enable us to fund our operating expenses and capital expenditure requirements through at least the next 12 months. Our estimate as to how long
we  expect  our  existing  cash,  cash  equivalents  and  marketable  securities  to  continue  to  fund  our  operations  is  based  on  assumptions  that  may  prove  to  be
wrong, and we could use our available capital resources sooner than we currently expect. Changing circumstances, some of which may be beyond our control,
could cause us to consume capital significantly faster than we currently anticipate, and we may need to seek additional funds sooner than planned.

We  plan  to  use  our  existing  cash,  cash  equivalents  and  marketable  securities  to  fund  our  development  of  AK002  and  for  other  research  and
development  activities,  working  capital  and  other  general  corporate  purposes.  This  may  include  additional  research,  hiring  additional  personnel,  capital
expenditures  and  the  costs  of  operating  as  a  public  company.  Advancing  the  development  of  AK002  and  any  other  product  candidates  will  require  a
significant amount of capital. Our existing cash, cash equivalents and marketable securities will not be sufficient to fund all of the actions that are necessary to
complete the development of AK002 or any of our other product candidates. We will be required to obtain further funding through public or private equity
offerings, debt financings, collaborations and licensing arrangements or other sources, which may dilute our stockholders or restrict our operating activities.
We do not have any committed external source of funds. Adequate additional financing may not be available to us on acceptable terms, or at all. Our failure to
raise capital as and when needed would have a negative impact on our financial condition and our ability to pursue our business strategy.

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

We are dependent on the success of our lead compound, AK002, which is currently in multiple clinical trials. If we are unable to obtain approval for and
commercialize AK002 for one or more indications in a timely manner, our business could be materially harmed.

Our  future  success  is  dependent  on  our  ability  to  timely  complete  clinical  trials  and  obtain  marketing  approval  for,  and  then  successfully
commercialize AK002, our lead compound, for one or more indications. AK002 is in the early stages of development and we are investing the majority of our
efforts  and  financial  resources  in  the  research  and  development  of  AK002  for  multiple  indications.  AK002  will  require  additional  clinical  development,
evaluation  of  clinical,  preclinical  and  manufacturing  activities,  marketing  approval  from  government  regulators,  substantial  investment  and  significant
marketing efforts before we generate any revenues from product sales. We are not permitted to market or promote AK002, or any other product candidates,
before  we  receive  marketing  approval  from  the  U.S.  Food  and  Drug  Administration  (“FDA”)  and  comparable  foreign  regulatory  authorities,  and  we  may
never receive such marketing approvals.

The success of AK002 will depend on several factors, including the following:

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successful and timely completion of our ongoing clinical trials of AK002;

initiation and successful patient enrollment and completion of additional clinical trials on a timely basis;

efficacy,  safety  and  tolerability  profiles  that  are  satisfactory  to  the  FDA  or  any  comparable  foreign  regulatory  authority  for  marketing
approval;

timely receipt of marketing approvals for AK002 from applicable regulatory authorities;

the extent of any required post-marketing approval commitments to applicable regulatory authorities;

the maintenance of existing or the establishment of new supply arrangements with third-party drug product suppliers and manufacturers;

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•

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•

the  maintenance  of  existing  or  the  establishment  of  new  scaled  production  arrangements  with  third-party  manufacturers  to  obtain  finished
products that are appropriately packaged for sale;

obtaining and maintaining patent protection, trade secret protection and regulatory exclusivity, both in the United States and internationally;

protection of our rights in our intellectual property portfolio, including our licensed intellectual property;

successful launch of commercial sales following any marketing approval;

a continued acceptable safety profile following any marketing approval;

commercial acceptance by patients, the medical community and third-party payors; and

our ability to compete with other therapies.

We do not have complete control over many of these factors, including certain aspects of clinical development and the regulatory submission process,

potential threats to our intellectual property rights and the manufacturing, marketing, distribution and sales efforts of any future collaborator.

The regulatory approval processes of the FDA, European Medicines Agency (“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  trials,  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 data. Even if we eventually complete clinical testing and receive approval of
any  regulatory  filing  for  our  product  candidates,  the  FDA,  EMA  and  comparable  foreign  regulatory  authorities  may  approve  our  product  candidates  for  a
more limited indication or a narrower patient population than we originally requested. We have not submitted for, or obtained regulatory approval for any
product candidate, 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 trials;

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;

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

the  data  collected  from  clinical  trials  of  our  product  candidates  may  not  be  sufficient  to  support  the  submission  of  a  Biologics  License
Application  (“BLA”)  or  New  Drug  Application  (“NDA”),  or  other  submission  or  to  obtain  regulatory  approval  in  the  United  States  or
elsewhere;

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•

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we may be unable to demonstrate to the FDA, EMA or comparable foreign regulatory authorities that a product candidate’s risk-benefit ratio
for its proposed indication is acceptable;

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 trials, 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 prospects.

If we experience delays or difficulties in the enrollment of patients in clinical trials, our receipt of necessary marketing approvals could be delayed or
prevented.

We may not be able to initiate or continue clinical trials for our product candidates if we are unable to locate and enroll a sufficient number of eligible
patients  to  participate  in  these  trials  as  required  by  the  FDA  or  comparable  foreign  regulatory  authorities.  Patient  enrollment  is  a  significant  factor  in  the
timing of clinical trials. In particular, because certain of our clinical trials of AK002 are focused on indications with small patient populations, our ability to
enroll eligible patients may be limited or may result in slower enrollment than we anticipate.

Patient enrollment may be affected if our competitors have ongoing clinical trials for product candidates that are under development for the same
indications as our product candidates, and patients who would otherwise be eligible for our clinical trials instead enroll in clinical trials of our competitors’
product candidates. Patient enrollment may also be affected by other factors, including:

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size and nature of the patient population;

severity of the disease under investigation;

availability and efficacy of approved drugs for the disease under investigation;

patient eligibility criteria for the trial in question;

perceived risks and benefits of the product candidate under study;

efforts to facilitate timely enrollment in clinical trials;

patient referral practices of physicians;

the ability to monitor patients adequately during and after treatment;

proximity and availability of clinical trial sites for prospective patients; and

continued enrollment of prospective patients by clinical trial sites.

Our inability to enroll a sufficient number of patients for our clinical trials would result in significant delays or may require us to abandon one or
more clinical trials altogether. Enrollment delays in our clinical trials may result in increased development costs for our product candidates and jeopardize our
ability to obtain marketing approval for the sale of our product candidates.

The clinical trials of our product candidates may not demonstrate safety and efficacy to the satisfaction of regulatory authorities or otherwise produce
positive results.

Before obtaining marketing approval from regulatory authorities for the sale of our product candidates, we must complete preclinical development
and then conduct extensive clinical trials to demonstrate the safety and efficacy of our product candidates. Clinical testing is expensive, difficult to design and
implement, can take many years to complete and its ultimate outcome is uncertain. A failure of one or more clinical trials can occur at any stage of the

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process. The outcome of preclinical studies and early-stage clinical trials may not be predictive of the success of later clinical trials. Moreover, preclinical and
clinical  data  are  often  susceptible  to  varying  interpretations  and  analyses,  and  many  companies  that  have  believed  their  product  candidates  performed
satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval of their drugs.

We do not know whether our future clinical trials will begin on time or enroll patients on time, or whether our ongoing and/or future clinical trials

will be completed on schedule or at all. Clinical trials can be delayed for a variety of reasons, including delays related to:

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obtaining marketing approval to commence a trial;

reaching agreement on acceptable terms with prospective contract research organizations (“CROs”), and clinical trial sites;

obtaining institutional review board approval at each clinical trial site;

recruiting suitable patients to participate in a trial;

patients failing to comply with trial protocol or dropping out of a trial;

clinical trial sites deviating from trial protocol or dropping out of a trial;

the need to add new clinical trial sites; or

manufacturing sufficient quantities of product candidate for use in clinical trials.

We may experience numerous unforeseen events during, or as a result of, clinical trials that could delay or prevent receipt of marketing approval or

our ability to commercialize our product candidates, including:

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receipt of feedback from regulatory authorities that requires us to modify the design of our clinical trials;

negative or inconclusive clinical trial results that may require us to conduct additional clinical trials or abandon certain drug development
programs;

the number of patients required for clinical trials being larger than anticipated, enrollment in these clinical trials being slower than anticipated
or participants dropping out of these clinical trials at a higher rate than anticipated;

third-party contractors failing to comply with regulatory requirements or meet their contractual obligations to us in a timely manner, or at all;

the suspension or termination of our clinical trials for various reasons, including non-compliance with regulatory requirements, a finding that
our product candidates have undesirable side effects or other unexpected characteristics or risks;

the cost of clinical trials of our product candidates being greater than anticipated;

the  supply  or  quality  of  our  product  candidates  or  other  materials  necessary  to  conduct  clinical  trials  of  our  product  candidates  being
insufficient or inadequate; and

regulators revising the requirements for approving our product candidates.

If we are required to conduct additional clinical trials or other testing of our product candidates beyond those that we currently contemplate, if we are
unable  to  successfully  complete  clinical  trials  of  our  product  candidates  or  other  testing,  if  the  results  of  these  trials  or  tests  are  not  positive  or  are  only
modestly positive or if there are safety concerns, we may incur unplanned costs, be delayed in obtaining marketing approval, if at all, receive more limited or
restrictive  marketing  approval,  be  subject  to  additional  post-marketing  testing  requirements  or  have  the  drug  removed  from  the  market  after  obtaining
marketing approval.

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The outcome of preclinical testing and early clinical trials may not be predictive of the success of later clinical trials, and the results of our clinical trials
may not satisfy the requirements of the FDA or comparable foreign regulatory authorities.

We currently have no drugs approved for sale and we cannot guarantee that we will ever have marketable drugs. Clinical failure can occur at any
stage of clinical development. Clinical trials may produce negative or inconclusive results, and we or any future collaborators may decide, or regulators may
require us, to conduct additional clinical trials or preclinical studies. We will be required to demonstrate with substantial evidence through well-controlled
clinical trials that our product candidates are safe and effective for use in a diverse population before we can seek marketing approvals for their commercial
sale. Success in preclinical studies and early-stage clinical trials does not mean that future larger registration clinical trials will be successful. This is because
product candidates in later-stage clinical trials may fail to demonstrate sufficient safety and efficacy to the satisfaction of the FDA and non-U.S. regulatory
authorities despite having progressed through preclinical studies and early-stage clinical trials. In particular, no compound with the mechanism of action of
AK002  has  been  commercialized,  and  the  outcome  of  preclinical  studies  and  early-stage  clinical  trials  may  not  be  predictive  of  the  success  of  later-stage
clinical trials.

From time to time, we may publish or report interim or preliminary data from our clinical trials. Interim or preliminary data from clinical trials that
we may conduct may not be indicative of the final results of the trial and are subject to the risk that one or more of the clinical outcomes may materially
change  as  patient  enrollment  continues  and  more  patient  data  become  available.  Interim  or  preliminary  data  also  remain  subject  to  audit  and  verification
procedures that may result in the final data being materially different from the interim or preliminary data. As a result, interim or preliminary data should be
viewed with caution until the final data are available.

In some instances, there can be significant variability in safety and efficacy results between different clinical trials of the same product candidate due
to numerous factors, including changes in trial protocols, differences in size and type of the patient populations, differences in and adherence to the dosing
regimen and other trial protocols and the rate of dropout among clinical trial participants. In addition, we use patient-reported outcome assessments in our
clinical trials, which involve patients’ subjective assessments of efficacy of the treatments they receive in the trial. Such assessments can vary widely from
day  to  day  for  a  particular  patient,  and  from  patient  to  patient  and  site  to  site  within  a  clinical  trial.  This  subjectivity  can  increase  the  uncertainty  of,  and
adversely impact, our clinical trial outcomes.

We do not know whether any clinical trials we may conduct will demonstrate consistent or adequate efficacy and safety sufficient to obtain marketing

approval to market our product candidates.

Our product candidates may not achieve adequate market acceptance among physicians, patients, healthcare payors and others in the medical community
necessary for commercial success.

Even if our product candidates receive regulatory approval, they may not gain adequate market acceptance among physicians, patients, healthcare
payors and others in the medical community. The degree of market acceptance of any of our approved product candidates will depend on a number of factors,
including:

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the efficacy and safety profile as demonstrated in planned clinical trials;

the timing of market introduction of the product candidate as well as competitive products;

the clinical indications for which the product candidate is approved;

restrictions  on  the  use  of  our  products,  if  approved,  such  as  boxed  warnings  or  contraindications  in  labeling,  or  a  risk  evaluation  and
mitigation strategy, if any, which may not be required of alternative treatments and competitor products;

the potential and perceived advantages of product candidates over alternative treatments;

the cost of treatment in relation to alternative treatments;

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the availability of coverage and adequate reimbursement and pricing by third-parties and government authorities;

relative convenience and ease of administration;

the effectiveness of sales and marketing efforts;

unfavorable publicity relating to the product candidate; and

the approval of other new therapies for the same indications.

If any product candidate is approved but does not achieve an adequate level of acceptance by physicians, hospitals, healthcare payors and patients, we
may not generate or derive sufficient revenue from that product candidate and our financial results could be harmed. AK002 is currently administered as an
intravenous treatment, which is less convenient for patients than some other methods of administration, such as an orally delivered drug.

The sizes of the patient populations suffering from some of the diseases we are targeting are small and based on estimates that may not be accurate.

Our projections of both the number of people who have some of the diseases we are targeting, as well as the subset of people with these diseases who
have the potential to benefit from treatment with AK002 and any other future product candidates, are estimates. These estimates have been derived from a
variety  of  sources,  including  scientific  literature,  surveys  of  clinics,  physician  interviews,  patient  foundations  and  market  research,  and  may  prove  to  be
incorrect. Further, new studies may change the estimated incidence or prevalence of these diseases. The number of patients may turn out to be lower than
expected.  Additionally,  the  potentially  addressable  patient  population  for  AK002  and  any  other  future  product  candidates  may  be  limited  or  may  not  be
amenable  to  treatment  with  AK002  and  any  other  products,  if  and  when  approved.  Even  if  we  obtain  significant  market  share  for  AK002  and  any  other
products  (if  and  when  they  are  approved),  small  potential  target  populations  for  certain  indications  means  we  may  never  achieve  profitability  without
obtaining market approval for additional indications.

Our business will be impacted by our ability to advance additional product candidates beyond AK002 into clinical development and through to regulatory
approval  and  commercialization.  Our  other  product  candidates  are  at  even  earlier  stages  of  development  than  AK002  and  may  fail  in  development  or
suffer delays that adversely affect their commercial viability.

All  of  our  product  candidates  are  in  the  early  stages  of  development  and  may  fail  in  development  or  suffer  delays  that  adversely  affect  their
commercial viability. A product candidate can unexpectedly fail at any stage of preclinical and clinical development. The historical failure rate for product
candidates is high due to risks relating to safety, efficacy, clinical execution, changing standards of medical care and other unpredictable variables. The results
from preclinical testing or early clinical trials of a product candidate may not be predictive of the results that will be obtained in later-stage clinical trials of
the product candidate.

Our future operating results are dependent on our ability to successfully develop, obtain regulatory approval for, and then successfully commercialize
other product candidates in addition to AK002. The success of any product candidates we may develop will depend on many factors, including the following:

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generating sufficient data to support the initiation or continuation of clinical trials;

obtaining regulatory permission to initiate clinical trials;

contracting with the necessary parties to conduct clinical trials;

successful enrollment of patients in, and the completion of, clinical trials;

the timely manufacture of sufficient quantities of the product candidate for use in clinical trials; and

adverse events in the clinical trials.

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Even if we successfully advance any other product candidates into clinical development, their success will be subject to all of the clinical, regulatory
and commercial risks described  elsewhere  in  this  “Risk  Factors”  section.  Accordingly,  we  cannot  assure  you  that  we  will  ever  be  able  to  develop,  obtain
regulatory approval of, commercialize or generate significant revenue from any other product candidates.

Any drugs we develop may become subject to unfavorable third-party reimbursement practices and pricing regulations.

The availability and extent of coverage and adequate reimbursement by governmental and private payors is essential for most patients to be able to
afford expensive treatments. Sales of any of our product candidates that receive marketing approval will depend substantially, both in the United States and
internationally, on the extent to which the costs of our product candidates will be paid by health maintenance, managed care, pharmacy benefit, and similar
healthcare management organizations or reimbursed by government health administration authorities, private health coverage insurers and other third-party
payors. If reimbursement is not available, or is available only to limited levels, we may not be able to successfully commercialize our product candidates.
Even if coverage is provided, the approved reimbursement amount may not be high enough to allow us to establish or maintain pricing sufficient to realize an
adequate  return  on  our  investment.  Coverage  and  reimbursement  may  impact  the  demand  for,  or  the  price  of,  any  product  candidate  for  which  we  obtain
marketing  approval.  If  coverage  and  reimbursement  are  not  available  or  reimbursement  is  available  only  to  limited  levels,  we  may  not  successfully
commercialize any product candidate for which we obtain marketing approval.

There  is  significant  uncertainty  related  to  insurance  coverage  and  reimbursement  of  newly  approved  products.  In  the  United  States,  principal
decisions about reimbursement for new products are typically made by the Centers for Medicare & Medicaid Services (“CMS”), an agency within the U.S.
Department of Health and Human Services. CMS decides whether and to what extent a new product will be covered and reimbursed under Medicare, and
private payors often follow CMS’s decisions regarding coverage and reimbursement to a substantial degree. However, one payor’s determination to provide
coverage for a drug product does not assure that other payors will also provide coverage for the drug product. As a result, the coverage determination process
is often time-consuming and costly. This process will require us to provide scientific and clinical support for the use of our products to each payor separately,
with no assurance that coverage and adequate reimbursement will be applied consistently or obtained in the first instance.

Increasingly, third-party payors are requiring that drug companies provide them with predetermined discounts from list prices and are challenging the
prices  charged  for  medical  products.  Further,  such  payors  are  increasingly  challenging  the  price,  examining  the  medical  necessity  and  reviewing  the  cost
effectiveness  of  medical  drug  products.  There  may  be  especially  significant  delays  in  obtaining  coverage  and  reimbursement  for  newly  approved  drugs.
Third-party payors may limit coverage to specific drug products on an approved list, known as a formulary, which might not include all FDA-approved drugs
for a particular indication. We may need to conduct expensive pharmaco-economic studies to demonstrate the medical necessity and cost effectiveness of our
products.  Nonetheless,  our  product  candidates  may  not  be  considered  medically  necessary  or  cost  effective.  We  cannot  be  sure  that  coverage  and
reimbursement will be available for any product that we commercialize and, if reimbursement is available, what the level of reimbursement will be.

Outside the United States, international operations are generally subject to extensive governmental price controls and other market regulations, and
we believe the increasing emphasis on cost containment initiatives in Europe, Canada and other countries has and will continue to put pressure on the pricing
and usage of therapeutics such as our product candidates. In many countries, particularly the countries of the European Union, medical product prices are
subject to varying price control mechanisms as part of national health systems. In these countries, pricing negotiations with governmental authorities can take
considerable time after a product receives marketing approval. To obtain reimbursement or pricing approval in some countries, we may be required to conduct
a clinical trial that compares the cost-effectiveness of our product candidate to other available therapies. In general, product prices under such systems are
substantially lower than in the United States. Other countries allow companies to fix their own prices for products but monitor and control company profits.
Additional  foreign  price  controls  or  other  changes  in  pricing  regulation  could  restrict  the  amount  that  we  are  able  to  charge  for  our  product  candidates.
Accordingly,  in  markets  outside  the  United  States,  the  reimbursement  for  our  products  may  be  reduced  compared  with  the  United  States  and  may  be
insufficient to generate commercially reasonable revenue and profits.

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If we are unable to establish or sustain coverage and adequate reimbursement for any future product candidates from third-party payors, the adoption
of those products and sales revenue will be adversely affected, which, in turn, could adversely affect the ability to market or sell those product candidates, if
approved. Coverage policies and third-party reimbursement rates may change at any time. Even if favorable coverage and reimbursement status is attained for
one or more products for which we receive regulatory approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

If our competitors develop and market products that are more effective, safer or less expensive than our product candidates, our commercial opportunities
will be negatively impacted.

The biotechnology industry is highly competitive and subject to rapid and significant technological change. Products we may develop in the future
are likely to face competition from other drugs and therapies, some of which we may not currently be aware. In addition, our products may need to compete
with off-label drugs used by physicians to treat the indications for which we seek approval. This may make it difficult for us to replace existing therapies with
our products.

We are not aware of any other company or organization that is conducting clinical trials of a product candidate that targets both eosinophils and mast
cells, including any product candidate that specifically targets Siglec-8. The competition we may face with respect to the indications we are targeting with
AK002 includes, without limitation, Regeneron, AstraZeneca, Celgene, Shire, and Dr. Falk Pharma for EGIDs, Blueprint Medicines for ISM, and Novartis
Pharmaceuticals,  Genentech,  and  Gossamer  Bio  for  CU.  These  companies,  or  other  major  multinational  pharmaceutical  and  biotechnology  companies,
emerging  and  start-up  companies,  universities  and  other  research  institutions,  could  focus  their  future  efforts  on  developing  competing  therapies  and
treatments for any of the indications we are currently targeting or may target in the future. Many of these current and potential competitors have significantly
greater financial, manufacturing, marketing, drug development, technical and human resources and commercial expertise than we do. Large pharmaceutical
and  biotechnology  companies,  in  particular,  have  extensive  experience  in  clinical  testing,  obtaining  regulatory  approvals,  recruiting  patients  and
manufacturing biotechnology products. These companies also have significantly greater research and marketing capabilities than we do and may also have
products  that  have  been  approved  or  are  in  late  stages  of  development,  and  collaborative  arrangements  in  our  target  markets  with  leading  companies  and
research  institutions.  Established  pharmaceutical  and  biotechnology  companies  may  also  invest  heavily  to  accelerate  discovery  and  development  of  novel
compounds  or  to  in-license  novel  compounds  that  could  make  the  product  candidates  that  we  develop  obsolete.  As  a  result  of  all  of  these  factors,  our
competitors may succeed in obtaining approval from the FDA or foreign regulatory authorities or discovering, developing and commercializing products in
our field before we do.

Smaller and other early-stage companies may also prove to be significant competitors, particularly through collaborative arrangements with large and
established companies. These companies compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial
sites and patient registration for planned clinical trials, as well as in acquiring technologies complementary to, or necessary for, our programs. In addition, the
biotechnology  industry  is  characterized  by  rapid  technological  change.  If  we  fail  to  stay  at  the  forefront  of  technological  change,  we  may  be  unable  to
compete  effectively.  Technological  advances  or  products  developed  by  our  competitors  may  render  our  technologies  or  product  candidates  obsolete,  less
competitive or not economical.

We have limited resources and are currently focusing our efforts on developing AK002 for particular indications. As a result, we may fail to capitalize on
other product candidates or indications that may ultimately have proven to be more profitable.

We are currently focusing our efforts on developing AK002 for eosinophilic gastritis (“EG”), eosinophilic gastroenteritis (“EGE”), indolent systemic
mastocytosis (“ISM”), chronic urticaria (“CU”) and severe allergic conjunctivitis (“SAC”). As a result, we may forego or delay pursuit of opportunities for
other  indications  or  with  other  product  candidates  that  may  have  greater  commercial  potential.  Our  resource  allocation  decisions  may  cause  us  to  fail  to
capitalize on viable commercial drugs or profitable market opportunities. Our spending on current and future research and development activities for specific
indications may not yield any commercially viable drugs. If we do not accurately evaluate the commercial potential or target markets for a particular product
candidate, we may relinquish valuable rights to that product candidate through collaboration, licensing or other strategic arrangements in cases in which it
would have been more advantageous for us to retain sole development and commercialization rights to such product candidate.

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Our  business  entails  a  significant  risk  of  product  liability  and  if  we  are  unable  to  obtain  sufficient  insurance  coverage  such  inability  could  have  an
adverse effect on our business and financial condition.

Our  business  exposes  us  to  significant  product  liability  risks  inherent  in  the  development,  testing,  manufacturing  and  marketing  of  therapeutic
treatments. Product liability claims could delay or prevent completion of our development programs. If we succeed in marketing products, such claims could
result in an FDA investigation of the safety and effectiveness of our products, our manufacturing processes and facilities or our marketing programs. FDA
investigation could potentially lead to a recall of our products or more serious enforcement action, limitations on the approved indications for which they may
be used or suspension or withdrawal of approvals. Regardless of the merits or eventual outcome, liability claims may also result in decreased demand for our
products, injury to our reputation, costs to defend the related litigation, a diversion of management’s time and our resources and substantial monetary awards
to trial participants or patients. We currently have product liability insurance that we believe is appropriate for our stage of development and may need to
obtain higher levels prior to marketing any of our product candidates, if approved. Any insurance we have or may obtain may not provide sufficient coverage
against potential liabilities. Furthermore, clinical trial and product liability insurance is becoming increasingly expensive. As a result, we may be unable to
obtain sufficient insurance at a reasonable cost to protect us against losses caused by product liability claims that could have an adverse effect on our business
and financial condition.

Risks Related to Regulatory Approval and Other Legal Compliance Matters

We may be unable to obtain U.S. or foreign regulatory approval and, as a result, unable to commercialize our product candidates.

Our  product  candidates  are  subject  to  extensive  governmental  regulations  relating  to,  among  other  things,  research,  testing,  development,
manufacturing,  safety,  efficacy,  approval,  recordkeeping,  reporting,  labeling,  storage,  packaging,  advertising  and  promotion,  pricing,  marketing  and
distribution  of  drugs  and  therapeutic  biologics.  Rigorous  preclinical  testing  and  clinical  trials  and  an  extensive  regulatory  approval  process  must  be
successfully completed in the United States and in many foreign jurisdictions before a new drug or therapeutic biologic can be marketed. Satisfaction of these
and other regulatory requirements is costly, time-consuming, uncertain and subject to unanticipated delays. It is possible that none of the product candidates
we may develop will obtain the regulatory approvals necessary for us to begin selling them.

Our company has not conducted or managed clinical trials through regulatory approval, including FDA approval. The time required to obtain FDA
and other approvals is unpredictable but typically takes many years following the commencement of clinical trials, depending upon the type, complexity and
novelty of the product candidate. The standards that the FDA and its foreign counterparts use when regulating us require judgment and can change, which
makes  it  difficult  to  predict  with  certainty  how  they  will  be  applied.  Any  analysis  we  perform  of  data  from  preclinical  and  clinical  activities  is  subject  to
confirmation and interpretation by regulatory authorities, which could delay, limit or prevent regulatory approval. We may also encounter unexpected delays
or increased costs due to new government regulations. Examples of such regulations include future legislation or administrative action, or changes in FDA
policy during the period of product development, clinical trials and FDA regulatory review. It is impossible to predict whether legislative changes will be
enacted, or whether FDA or foreign regulations, guidance or interpretations will be changed, or what the impact of such changes, if any, may be.

Any delay or failure in obtaining required approvals could have a material and adverse effect on our ability to generate revenue from the particular
product candidate for which we are seeking approval. Furthermore, any regulatory approval to market a product may be subject to limitations on the approved
uses  for  which  we  may  market  the  product  or  the  labeling  or  other  restrictions.  In  addition,  the  FDA  has  the  authority  to  require  a  Risk  Evaluation  and
Mitigation Strategy (“REMS”), plan as part of a BLA or NDA, or after approval, which may impose further requirements or restrictions on the distribution or
use of an approved drug or biologic. These requirements or restrictions might include limiting prescribing to certain physicians or medical centers that have
undergone specialized training, limiting treatment to patients who meet certain safe-use criteria and requiring treated patients to enroll in a registry. These
limitations and restrictions may limit the size of the market for the product and affect reimbursement by third-party payors.

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We  are  also  subject  to  numerous  foreign  regulatory  requirements  governing,  among  other  things,  the  conduct  of  clinical  trials,  manufacturing  and
marketing authorization, pricing and third-party reimbursement. The foreign regulatory approval process varies among countries and may include all of the
risks associated with FDA approval described above as well as risks attributable to the satisfaction of local regulations in foreign jurisdictions. Moreover, the
time  required  to  obtain  approval  may  differ  from  that  required  to  obtain  FDA  approval.  Approval  by  the  FDA  does  not  ensure  approval  by  regulatory
authorities outside the United States and vice versa.

Our  clinical  trials  may  reveal  significant  adverse  events,  toxicities  or  other  side  effects  and  may  result  in  a  safety  profile  that  could  inhibit  regulatory
approval or market acceptance of any of our product candidates.

In order to obtain marketing approval for any of our product candidates, we must demonstrate the safety and efficacy of the product candidate for the
relevant  clinical  indication  or  indications  through  preclinical  studies  and  clinical  trials  as  well  as  additional  supporting  data.  If  our  product  candidates  are
associated with undesirable side effects in preclinical studies or clinical trials, or have unexpected characteristics, we may need to interrupt, delay or abandon
their development or limit development to more narrow uses or subpopulations in which the undesirable side effects or other characteristics are less prevalent,
less severe or more acceptable from a risk-benefit perspective.

We have completed a randomized, double-blind placebo-controlled Phase 1 trial for AK002 in 51 healthy volunteers, an open-label Phase 2 trial in 47
patients with CU, as well as a Phase 1 trial in 25 patients with ISM. We are also currently testing AK002 in a double-blind, placebo-controlled Phase 2 trial in
patients with EG and in a Phase 1 trial in patients with SAC. Although we have conducted various preclinical studies and completed one Phase 1 clinical trial,
we do not know the predictive value of these studies and trials for our future clinical trials, and we cannot guarantee that any positive results in preclinical
studies or previous clinical trials will successfully translate to patients in our future clinical trials. It is not uncommon to observe results in clinical trials that
are unexpected based on preclinical testing, and many product candidates fail in clinical trials despite promising preclinical results. Moreover, preclinical and
clinical data are often susceptible to varying interpretations and analyses, and many companies that believed their product candidates performed satisfactorily
in preclinical studies and clinical trials have nonetheless failed to obtain marketing approval for their products. Because Siglec-8 is only naturally expressed in
humans and certain other primates, there is no standard animal toxicology model for anti-Siglec-8 therapies, and the acceptability of our preclinical safety
data for AK002 depends on the continued acceptance by the FDA and EMA, and the acceptance by other regulatory authorities, of the use of our proprietary
transgenic mice models for toxicology studies.

AK002 has generally been well tolerated in our clinical trials. The most common adverse event has been the occurrence of mild to moderate infusion-
related  reactions  (“IRRs”)  (consisting  of  flushing,  feeling  of  warmth,  headache,  nausea  or  dizziness)  which  occurred  mostly  during  the  first  infusion  and
diminished or did not occur on subsequent infusions. Temporal interruption of the AK002 infusion and minimal intervention generally resulted in prompt
resolution of symptoms and ability to resume the infusion without further complications, although there have been instances when an IRR has resulted in a
subject being discontinued from a trial. Subjects in our ongoing and planned clinical trials may in the future suffer other significant adverse events or other
side effects not observed in our preclinical studies or previous clinical trials. If clinical trials of our product candidates fail to demonstrate efficacy to the
satisfaction  of  regulatory  authorities  or  do  not  otherwise  produce  positive  results,  we  may  incur  additional  costs  or  experience  delays  in  completing,  or
ultimately be unable to complete, development and commercialization of our product candidates.

If further significant adverse events or other side effects are observed in any of our current or future clinical trials, we may have difficulty recruiting
patients  to  the  clinical  trials,  patients  may  drop  out  of  our  trials,  or  we  may  be  required  to  abandon  the  trials  or  our  development  efforts  of  that  product
candidate altogether. We, the FDA, the EMA, other applicable regulatory authorities or an institutional review board may suspend clinical trials of a product
candidate at any time for various reasons, including a belief that subjects in such trials are being exposed to unacceptable health risks or adverse side effects.
Some potential therapeutics developed in the biotechnology industry that initially showed therapeutic promise in early-stage studies have later been found to
cause  side  effects  that  prevented  their  further  development.  Even  if  the  side  effects  do  not  preclude  the  drug  from  obtaining  or  maintaining  marketing
approval,  undesirable  side  effects  may  inhibit  market  acceptance  of  the  approved  product  due  to  its  tolerability  versus  other  therapies.  Any  of  these
developments could materially harm our business, financial condition and prospects.

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Further, if any of our product candidates obtains marketing approval, toxicities associated with our product candidates may also develop after such
approval and lead to a requirement to conduct additional clinical safety trials, additional warnings being added to the labeling, significant restrictions on the
use of the product or the withdrawal of the product from the market. We cannot predict whether our product candidates will cause toxicities in humans that
would preclude or lead to the revocation of regulatory approval based on preclinical studies or early-stage clinical testing.

The FDA, EMA and applicable foreign regulatory authorities may not accept data from trials conducted in locations outside of their jurisdiction.

We have completed a clinical trial in Australia and currently have an ongoing clinical trial in Germany. We may also in the future choose to conduct
additional  clinical  trials  in  these  countries  or  other  countries,  including  in  Europe.  The  acceptance  of  study  data  by  the  FDA,  EMA  or  applicable  foreign
regulatory  authority  from  clinical  trials  conducted  outside  of  their  respective  jurisdictions  may  be  subject  to  certain  conditions.  In  cases  where  data  from
foreign clinical trials are intended to serve as the basis for marketing approval in the United States, the FDA will generally not approve the application on the
basis of foreign data alone unless (i) the data are applicable to the United States population and United States medical practice and (ii) the trials are performed
by  clinical  investigators  of  recognized  competence  and  pursuant  to  current  good  clinical  practices  regulations.  Additionally,  the  FDA’s  clinical  trial
requirements, including sufficient size of patient populations and statistical powering, must be met. Many foreign regulatory bodies have similar approval
requirements. In addition, such foreign trials would be subject to the applicable local laws of the foreign jurisdictions where the trials are conducted. There
can  be  no  assurance  that  the  FDA,  EMA  or  any  applicable  foreign  regulatory  authority  will  accept  data  from  trials  conducted  outside  of  its  applicable
jurisdiction. If the FDA, EMA or any applicable foreign regulatory authority does not accept such data, it would result in the need for additional trials, which
would  be  costly  and  time-consuming  and  delay  aspects  of  our  business  plan,  and  which  may  result  in  our  product  candidates  not  receiving  approval  or
clearance for commercialization in the applicable jurisdiction.

Obtaining  and  maintaining  regulatory  approval  of  our  product  candidates  in  one  jurisdiction  does  not  mean  that  we  will  be  successful  in  obtaining
regulatory approval of our product candidates in other jurisdictions.

Obtaining  and  maintaining  regulatory  approval  of  our  product  candidates  in  one  jurisdiction  does  not  guarantee  that  we  will  be  able  to  obtain  or
maintain regulatory approval in any other jurisdiction. For example, even if the FDA or EMA grants marketing approval of a product candidate, comparable
regulatory  authorities  in  foreign  jurisdictions  must  also  approve  the  manufacturing,  marketing  and  promotion  of  the  product  candidate  in  those  countries.
However,  a  failure  or  delay  in  obtaining  regulatory  approval  in  one  jurisdiction  may  have  a  negative  effect  on  the  regulatory  approval  process  in  others.
Approval  procedures  vary  among  jurisdictions  and  can  involve  requirements  and  administrative  review  periods  different  from  those  in  the  United  States,
including additional preclinical studies or clinical trials as clinical trials conducted in one jurisdiction may not be accepted by regulatory authorities in other
jurisdictions. In many jurisdictions outside the United States, a product candidate must be approved for reimbursement before it can be approved for sale in
that jurisdiction. In some cases, the price that we intend to charge for our products is also subject to approval.

Obtaining foreign regulatory approvals and compliance with foreign regulatory requirements could result in significant delays, difficulties and costs
for us and could delay or prevent the introduction of our products in certain countries. If we or any partner we work with fail to comply with the regulatory
requirements in international markets or fail to receive applicable marketing approvals, our target market will be reduced and our ability to realize the full
market potential of our product candidates will be harmed.

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Even if our product candidates receive regulatory approval, they will be subject to significant post-marketing regulatory requirements.

Any regulatory approvals that we may receive for our product candidates will require surveillance to monitor the safety and efficacy of the product
candidate, may contain significant limitations related to use restrictions for specified age groups, warnings, precautions or contraindications, and may include
burdensome post-approval study or risk management requirements. For example, the FDA may require a REMS in order to approve our product candidates,
which could entail requirements for a medication guide, physician communication plans or additional elements, such as boxed warning on the packaging, to
ensure  safe  use,  such  as  restricted  distribution  methods,  patient  registries  and  other  risk  minimization  tools.  In  addition,  if  the  FDA  or  foreign  regulatory
authorities  approve  our  product  candidates,  the  manufacturing  processes,  labeling,  packaging,  distribution,  adverse  event  reporting,  storage,  advertising,
promotion, import, export and recordkeeping for our product candidates will be subject to extensive and ongoing regulatory requirements. These requirements
include  submissions  of  safety  and  other  post-marketing  information  and  reports,  registration,  as  well  as  continued  compliance  with  current  good
manufacturing practices (“cGMPs”) and good clinical practices (“GCPs”), for any clinical trials that we conduct post-approval. In addition, manufacturers of
drug products and their facilities are subject to continual review and periodic inspections by the FDA and other regulatory authorities for compliance with
cGMP regulations and standards. If we or a regulatory agency discover previously unknown problems with a product, such as adverse events of unanticipated
severity or frequency, or problems with the facilities where the product is manufactured, a regulatory agency may impose restrictions on that product, the
manufacturing facility or us, including requiring recall or withdrawal of the product from the market or suspension of manufacturing. In addition, failure to
comply with FDA and foreign regulatory requirements may, either before or after product approval, if any, subject our company to administrative or judicially
imposed sanctions, including:

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restrictions on our ability to conduct clinical trials, including full or partial clinical holds on ongoing or planned trials;

restrictions on the products, manufacturers or manufacturing process;

warning or untitled letters;

civil and criminal penalties;

injunctions;

suspension or withdrawal of regulatory approvals;

product seizures, detentions or import bans;

voluntary or mandatory product recalls and publicity requirements;

total or partial suspension of production;

imposition of restrictions on operations, including costly new manufacturing requirements; and

refusal to approve pending BLAs or supplements to approved BLAs.

The occurrence of any event or penalty described above may inhibit our ability to commercialize our product candidates and generate revenue.

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We may not be able to obtain orphan drug designation or obtain or maintain orphan drug exclusivity for our product candidates and, even if we do, that
exclusivity may not prevent the FDA or the EMA, from approving competing products.

Regulatory authorities in some jurisdictions, including the United States and the European Union, may designate drugs for relatively small patient
populations as orphan drugs. Under the Orphan Drug Act, the FDA may designate a product as an orphan drug if it is a drug intended to treat a rare disease or
condition, which is generally defined as a patient population of fewer than 200,000 individuals annually in the United States, or a patient population greater
than 200,000 in the United States where there is no reasonable expectation that the cost of developing the drug will be recovered from sales in the United
States. We have obtained orphan drug designation for EG and EGE in the United States and for ISM in the European Union. We expect to seek orphan drug
designation for AK002 for other gastrointestinal diseases and may seek orphan drug designations for other indications or for other of our product candidates.
There can be no assurances that we will be able to obtain such designations.

In  the  United  States,  orphan  drug  designation  entitles  a  party  to  financial  incentives  such  as  opportunities  for  grant  funding  towards  clinical  trial
costs, tax advantages and user-fee waivers. In addition, if a product that has orphan drug designation subsequently receives the first FDA approval for the
disease for which it has such designation, the product is entitled to orphan drug exclusivity. Orphan drug exclusivity in the United States provides that the
FDA  may  not  approve  any  other  applications,  including  a  full  BLA  or  NDA,  to  market  the  same  drug  for  the  same  indication  for  seven  years,  except  in
limited circumstances. The applicable exclusivity period is ten years in Europe. The European exclusivity period can be reduced to six years if a drug no
longer meets the criteria for orphan drug designation or if the drug is sufficiently profitable so that market exclusivity is no longer justified.

Even if we obtain orphan drug designation for a product candidate, we may not be able to obtain or maintain orphan drug exclusivity for that product
candidate. We may not be the first to obtain marketing approval of any product candidate for which we have obtained orphan drug designation for the orphan-
designated indication due to the uncertainties associated with developing pharmaceutical products. In addition, exclusive marketing rights in the United States
may be limited if we seek approval for an indication broader than the orphan-designated indication or may be lost if the FDA later determines that the request
for designation was materially defective or if we are unable to assure sufficient quantities of the product to meet the needs of patients with the rare disease or
condition. Further, even if we obtain orphan drug exclusivity for a product, that exclusivity may not effectively protect the product from competition because
different drugs with different active moieties may be approved for the same condition. Even after an orphan drug is approved, the FDA can subsequently
approve the same drug with the same active moiety for the same condition if the FDA concludes that the later drug is clinically superior in that it is shown to
be  safer,  more  effective  or  makes  a  major  contribution  to  patient  care  or  the  manufacturer  of  the  product  with  orphan  exclusivity  is  unable  to  maintain
sufficient  product  quantity.  Orphan  drug  designation  neither  shortens  the  development  time  or  regulatory  review  time  of  a  drug  nor  gives  the  drug  any
advantage in the regulatory review or approval process.

Although  we  may  seek  a  breakthrough  therapy  designation  for  AK002  or  one  or  more  of  our  other  product  candidates,  we  might  not  receive  such
designation, and even if we do, such designation may not lead to a faster development or regulatory review or approval process.

We may seek a breakthrough therapy designation for AK002 in one or more indications or for other product candidates. A breakthrough therapy is
defined  as  a  drug  that  is  intended,  alone  or  in  combination  with  one  or  more  other  drugs,  to  treat  a  serious  condition,  and  preliminary  clinical  evidence
indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial
treatment  effects  observed  early  in  clinical  development.  For  drugs  and  biologics  that  have  been  designated  as  breakthrough  therapies,  interaction  and
communication  between  the  FDA  and  the  sponsor  of  the  trial  can  help  to  identify  the  most  efficient  path  for  clinical  development  while  minimizing  the
number of patients placed in ineffective control regimens. Drugs designated as breakthrough therapies by the FDA may also be eligible for priority review if
supported by clinical data at the time the NDA is submitted to the FDA.

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Designation as a breakthrough therapy is within the discretion of the FDA. Accordingly, even if we believe that one of our product candidates meets
the  criteria  for  designation  as  a  breakthrough  therapy,  the  FDA  may  disagree  and  instead  determine  not  to  make  such  designation.  Even  if  we  receive
breakthrough  therapy  designation,  the  receipt  of  such  designation  for  a  product  candidate  may  not  result  in  a  faster  development  or  regulatory  review  or
approval process  compared  to  drugs  considered  for  approval  under  conventional  FDA  procedures  and  does  not  assure  ultimate  approval  by  the  FDA.  In
addition, even if one or more of our product candidates qualify as breakthrough therapies, the FDA may later decide that the product candidates no longer
meet the conditions for qualification or decide that the time period for FDA review or approval will not be shortened.

We may face difficulties from changes to current regulations and future legislation.

Existing regulatory policies may change and additional government regulations may be enacted that could prevent, limit or delay regulatory approval
of our product candidates. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative
action, either in the United States or abroad. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or
policies, or if we are not able to maintain regulatory compliance, we may lose any marketing approval that we may have obtained and we may not achieve or
sustain profitability.

The Trump Administration and certain members of Congress have made various efforts to repeal all or portions of the Affordable Care Act (“ACA”),
including suspending the penalties for failing to comply with the individual insurance mandate, removing funds designed to drive enrollment in the program
and coming within a single vote in the U.S. Senate of repealing the ACA altogether. There is uncertainty with respect to the impact future actions by the
Trumps Administration or Congress may have and any changes likely will take time to unfold, and could have an impact on coverage and reimbursement for
healthcare items and services covered by plans that were authorized by the ACA. However, we cannot predict the ultimate content, timing or effect of any
further healthcare reform legislation or the impact of potential legislation on us. In addition, other legislative changes have been proposed and adopted since
the ACA was enacted. These changes included aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, effective April 1, 2013,
which, due to subsequent legislative amendments, will stay in effect through 2025 unless additional Congressional action is taken. In January 2013, President
Obama  signed  into  law  the  American  Taxpayer  Relief  Act  of  2012,  which,  among  other  things,  reduced  Medicare  payments  to  several  providers,  and
increased  the  statute  of  limitations  period  for  the  government  to  recover  overpayments  to  providers  from  three  to  five  years.  These  laws  may  result  in
additional  reductions  in  Medicare  and  other  healthcare  funding,  which  could  have  a  material  adverse  effect  on  customers  for  our  drugs,  if  approved,  and
accordingly, our financial operations.

We expect that the ACA, as well as other healthcare reform measures that 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.  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 prevent us from being able to generate revenue, attain profitability or commercialize our product candidates.

Legislative  and  regulatory  proposals  have  been  made  to  expand  post-approval  requirements  and  restrict  sales  and  promotional  activities  for
biotechnology products. We cannot be sure whether additional legislative changes will be enacted, or whether FDA regulations, guidance or interpretations
will be changed, or what the impact of such changes on the marketing approvals of our product candidates, if any, may be. In addition, increased scrutiny by
the  U.S.  Congress  of  the  FDA’s  approval  process  may  significantly  delay  or  prevent  marketing  approval,  as  well  as  subject  us  to  more  stringent  product
labeling and post-marketing testing and other requirements.

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

Healthcare  providers  and  third-party  payors  play  a  primary  role  in  the  recommendation  and  prescription  of  any  product  candidates  for  which  we
obtain marketing approval. Our future arrangements with third-party 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 our
products for which we obtain marketing approval. Restrictions under applicable federal and state healthcare laws and regulations, include the following:

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the  federal  Anti-Kickback  Statute  prohibits,  among  other  things,  persons  and  entities  from  knowingly  and  willfully  soliciting,  offering,
receiving or providing remuneration, directly or indirectly, in cash or in kind, to induce or reward, or in return for, 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 a federal healthcare
program such as Medicare and Medicaid;

the federal false claims and civil monetary penalties laws, including the civil False Claims Act, impose criminal and civil penalties, including
civil  whistleblower  or  qui  tam  actions,  against  individuals  or  entities  for,  among  other  things,  knowingly  presenting,  or  causing  to  be
presented, to the federal government, claims for payment that are false or fraudulent or making a false statement to avoid, decrease or conceal
an obligation to pay money to the federal government;

the  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996  (“HIPAA”),  imposes  criminal  and  civil  liability  for,  among  other
things,  executing  or  attempting  to  execute  a  scheme  to  defraud  any  healthcare  benefit  program  or  making  false  statements  relating  to
healthcare matters;

HIPAA,  as  amended  by  the  Health  Information  Technology  for  Economic  and  Clinical  Health  Act  and  its  implementing  regulations,  also
imposes  obligations,  including  mandatory  contractual  terms,  with  respect  to  safeguarding  the  privacy,  security  and  transmission  of
individually identifiable health information;

the federal Physician Payments Sunshine Act requires applicable manufacturers of covered drugs, devices, biologics and medical supplies for
which  payment  is  available  under  Medicare,  Medicaid  or  the  Children’s  Health  Insurance  Program,  with  specific  exceptions,  to  annually
report  to  CMS  information  regarding  payments  and  other  transfers  of  value  to  physicians  and  teaching  hospitals  as  well  as  information
regarding ownership and investment interests held by physicians and their immediate family members. The information was made publicly
available on a searchable website in September 2014 and will be disclosed on an annual basis; and

analogous  state  and  foreign  laws  and  regulations,  such  as  state  anti-kickback  and  false  claims  laws,  may  apply  to  sales  or  marketing
arrangements  and  claims  involving  healthcare  items  or  services  reimbursed  by  non-governmental  third-party  payors,  including  private
insurers.

Some  state  laws  require  biotechnology  companies  to  comply  with  the  biotechnology  industry’s  voluntary  compliance  guidelines  and  the  relevant
compliance  guidance  promulgated  by  the  federal  government  and  may  require  drug  manufacturers  to  report  information  related  to  payments  and  other
transfers  of  value  to  physicians  and  other  healthcare  providers  or  marketing  expenditures.  State  and  foreign  laws  also  govern  the  privacy  and  security  of
health  information  in  some  circumstances,  many  of  which  differ  from  each  other  in  significant  ways  and  often  are  not  preempted  by  HIPAA,  thus
complicating compliance efforts.

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Efforts to ensure that our current and future business arrangements with third-parties will comply with applicable healthcare laws and regulations will
involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes,
regulations or case law involving applicable fraud and abuse or other healthcare laws and regulations. If our operations are found to be in violation of any of
these laws or any other governmental regulations that may apply to us, we may be subject to significant penalties, including civil, criminal and administrative
penalties,  damages,  fines,  disgorgement,  imprisonment,  exclusion  from  participation  in  government  funded  healthcare  programs,  such  as  Medicare  and
Medicaid, contractual damages, reputational harm, diminished profits and future earnings and the curtailment or restructuring of our operations. Defending
against any such actions can be costly, time-consuming and may require significant financial and personnel resources. Therefore, even if we are successful in
defending  against  any  such  actions  that  may  be  brought  against  us,  our  business  may  be  impaired.  Further,  if  any  of  the  physicians  or  other  healthcare
providers or entities with whom we expect to do business is found to be not in compliance with applicable laws, they may be subject to criminal, civil or
administrative sanctions, including exclusions from government funded healthcare programs.

Our employees may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements.

We are exposed to the risk of employee fraud or other misconduct. Misconduct by employees could include failures to comply with FDA regulations,
provide  accurate  information  to  the  FDA,  comply  with  federal  and  state  health  care  fraud  and  abuse  laws  and  regulations,  accurately  report  financial
information or data or disclose unauthorized activities to us. In particular, sales, marketing and business arrangements in the health care industry are subject to
extensive laws and regulations intended to prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may
restrict  or  prohibit  a  wide  range  of  pricing,  discounting,  marketing  and  promotion,  sales  commission,  customer  incentive  programs  and  other  business
arrangements.  Employee  misconduct  could  also  involve  the  improper  use  of  information  obtained  in  the  course  of  clinical  trials,  which  could  result  in
regulatory  sanctions  and  serious  harm  to  our  reputation.  We  have  adopted  a  code  of  conduct,  but  it  is  not  always  possible  to  identify  and  deter  employee
misconduct, 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 comply with these laws or regulations. 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.

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could
have a material adverse effect on our business.

We are subject to numerous environmental, health and safety laws and regulations, including those governing laboratory procedures and the handling,
use,  storage,  treatment  and  disposal  of  hazardous  materials  and  wastes.  Our  operations  involve  the  use  of  hazardous  and  flammable  materials,  including
chemicals and biological materials. Our operations also produce hazardous waste products. We generally contract with third-parties for the disposal of these
materials and wastes. We cannot eliminate the risk of contamination or injury from these materials. In the event of contamination or injury resulting from our
use of hazardous materials, we could be held liable for any resulting damages, and any liability could exceed our resources. We also could incur significant
costs associated with civil or criminal fines and penalties.

Although we maintain workers’ compensation insurance to cover us for costs and expenses we may incur due to injuries to our employees resulting
from  the  use  of  hazardous  materials,  this  insurance  may  not  provide  adequate  coverage  against  potential  liabilities.  We  do  not  maintain  insurance  for
environmental liability or toxic tort claims that may be asserted against us in connection with our storage or disposal of hazardous and flammable materials,
including chemicals and biological materials.

In addition, we may incur substantial costs in order to comply with current or future environmental, health and safety laws and regulations. These
current or future laws and regulations may impair our research, development or commercialization efforts. Failure to comply with these laws and regulations
also may result in substantial fines, penalties or other sanctions.

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Our  business  activities  may  be  subject  to  the  Foreign  Corrupt  Practices  Act  (“FCPA”),  and  similar  anti-bribery  and  anti-corruption  laws  of  other
countries in which we operate.

We have conducted and have ongoing studies in international locations, and may in the future initiate additional studies in countries other than the
United States. Our business activities may be subject to the FCPA and similar anti-bribery or anti-corruption laws, regulations or rules of other countries in
which we operate. The FCPA generally prohibits offering, promising, giving or authorizing others to give anything of value, either directly or indirectly, to a
non-U.S. government official in order to influence official action or otherwise obtain or retain business. The FCPA also requires public companies to make
and keep books and records that accurately and fairly reflect the transactions of the corporation and to devise and maintain an adequate system of internal
accounting  controls.  Our  business  is  heavily  regulated  and  therefore  involves  significant  interaction  with  public  officials,  including  officials  of  non-U.S.
governments.  Additionally,  in  many  other  countries,  the  health  care  providers  who  prescribe  pharmaceuticals  are  employed  by  their  government,  and  the
purchasers of pharmaceuticals are government entities; therefore, our dealings with these prescribers and purchasers are subject to regulation under the FCPA.
Recently  the  Securities  and  Exchange  Commission  (“SEC”)  and  Department  of  Justice  have  increased  their  FCPA  enforcement  activities  with  respect  to
biotechnology and pharmaceutical companies. There is no certainty that all of our employees, agents or contractors, or those of our affiliates, will comply
with all applicable laws and regulations, particularly given the high level of complexity of these laws. Violations of these laws and regulations could result in
fines,  criminal  sanctions  against  us,  our  officers  or  our  employees,  the  closing  down  of  our  facilities,  requirements  to  obtain  export  licenses,  cessation  of
business  activities  in  sanctioned  countries,  implementation  of  compliance  programs  and  prohibitions  on  the  conduct  of  our  business.  Any  such  violations
could  include  prohibitions  on  our  ability  to  offer  our  products  in  one  or  more  countries  and  could  materially  damage  our  reputation,  our  brand,  our
international expansion efforts, our ability to attract and retain employees and our business, prospects, operating results and financial condition.

Risks Related to Employee Matters, Managing Our Growth and Other Risks Related to Our Business

Our success is highly dependent on the services of our President and Chief Executive Officer, Dr. Robert Alexander, and our Chief Financial Officer and
Chief Operating Officer, Dr. Adam Tomasi, and our ability to attract and retain highly skilled executive officers and employees.

To succeed, we must recruit, retain, manage and motivate qualified clinical, scientific, technical and management personnel, and we face significant
competition for experienced personnel. We are highly dependent on the principal members of our management and scientific and medical staff, particularly
our President and Chief Executive Officer, Dr. Robert Alexander, and our Chief Financial Officer and Chief Operating Officer, Dr. Adam Tomasi. If we do
not succeed in attracting and retaining qualified personnel, particularly at the management level, it could adversely affect our ability to execute our business
plan  and  harm  our  operating  results.  In  particular,  the  loss  of  one  or  more  of  our  executive  officers,  including  Dr.  Alexander  or  Dr.  Tomasi,  could  be
detrimental to us if we cannot recruit suitable replacements in a timely manner. The competition for qualified personnel in the biotechnology field is intense
and  as  a  result,  we  may  be  unable  to  continue  to  attract  and  retain  qualified  personnel  necessary  for  the  future  success  of  our  business.  In  addition  to
competition for personnel, the San Francisco Bay Area in particular is characterized by a high cost of living. We could in the future have difficulty attracting
experienced personnel to our company and may be required to expend significant financial resources in our employee recruitment and retention efforts.

Many of the other biotechnology companies that we compete against for qualified personnel have greater financial and other resources, different risk
profiles and a longer history in the industry than we do. They also may provide more diverse opportunities and better prospects for career advancement. Some
of these characteristics may be more appealing to high-quality candidates than what we have to offer. If we are unable to continue to attract and retain high-
quality  personnel,  the  rate  and  success  at  which  we  can  discover,  develop  and  commercialize  our  product  candidates  will  be  limited  and  the  potential  for
successfully growing our business will be harmed.

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If we are unable to establish sales or marketing capabilities or enter into agreements with third-parties to sell or market our product candidates, we may
not be able to successfully sell or market our product candidates that obtain regulatory approval.

We currently do not have and have never had a marketing or sales team for the marketing, sales and distribution of any of our product candidates that
may be able to obtain regulatory approval. In order to commercialize any product candidates, we must build marketing, sales, distribution, managerial and
other non-technical capabilities or make arrangements with third-parties to perform these services for each of the territories in which we may have approval to
sell or market our product candidates. We may not be successful in accomplishing these required tasks.

Establishing  an  internal  sales  or  marketing  team  with  technical  expertise  and  supporting  distribution  capabilities  to  commercialize  our  product
candidates  will  be  expensive  and  time-consuming,  and  will  require  significant  attention  of  our  executive  officers  to  manage.  Any  failure  or  delay  in  the
development of our internal sales, marketing and distribution capabilities could adversely impact the commercialization of any of our product candidates that
we obtain approval to market, if we do not have arrangements in place with third-parties to provide such services on our behalf. Alternatively, if we choose to
collaborate, either globally or on a territory-by-territory basis, with third-parties that have direct sales forces and established distribution systems, either to
augment our own sales force and distribution systems or in lieu of our own sales force and distribution systems, we will be required to negotiate and enter into
arrangements  with  such  third-parties  relating  to  the  proposed  collaboration.  If  we  are  unable  to  enter  into  such  arrangements  when  needed  on  acceptable
terms,  or  at  all,  we  may  not  be  able  to  successfully  commercialize  any  of  our  product  candidates  that  receive  regulatory  approval  or  any  such
commercialization may experience delays or limitations. If we are unable to successfully commercialize our approved product candidates, either on our own
or through collaborations with one or more third-parties, our future product revenue will suffer and we may incur significant additional losses.

In  order  to  successfully  implement  our  plans  and  strategies,  we  will  need  to  grow  the  size  of  our  organization,  and  we  may  experience  difficulties  in
managing this growth.

At  December  31,  2018,  we  had  62  full-time  employees,  including  42  employees  engaged  in  research  and  development.  In  order  to  successfully
implement our development and commercialization plans and strategies, and as we transition into operating as a public company, we expect to need additional
managerial,  operational,  sales,  marketing,  financial  and  other  personnel.  Future  growth  would  impose  significant  added  responsibilities  on  members  of
management, including:

•

•

•

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

managing  our  internal  development  efforts  effectively,  including  the  clinical  and  FDA  review  process  for  AK002  and  any  other  future
product candidates, while complying with any contractual obligations to contractors and other third-parties we may have; and

improving our operational, financial and management controls, reporting systems and procedures.

Our  future  financial  performance  and  our  ability  to  successfully  develop  and,  if  approved,  commercialize  AK002  and  any  other  future  product
candidates  will  depend,  in  part,  on  our  ability  to  effectively  manage  any  future  growth,  and  our  management  may  also  have  to  divert  a  disproportionate
amount of its attention away from day-to-day activities in order to devote a substantial amount of time to managing 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, including substantially all aspects of clinical management and manufacturing. We cannot assure you that the services
of  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 third-party
service providers is compromised for any reason, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain marketing
approval of AK002 and any other future product candidates or otherwise advance our business. We cannot assure you that we will be able to manage our
existing third-party service providers or find other competent outside contractors and consultants on economically reasonable terms, or at all.

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If we are not able to effectively expand our organization by hiring new employees and/or engaging additional third-party service providers, we may
not  be  able  to  successfully  implement  the  tasks  necessary  to  further  develop  and  commercialize  AK002  and  any  other  future  product  candidates  and,
accordingly, may not achieve our research, development and commercialization goals.

We may experience disruptions and delays or incur financial damages as a result of system failures or security breaches.

Despite  the  implementation  of  security  measures,  any  of  the  internal  computer  systems  belonging  to  us  or  our  third-party  service  providers  are
vulnerable to damage from computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failure. Any system
failure, accident or security breach that causes interruptions in our own or in third-party service providers’ operations could result in a material disruption of
our drug discovery and development programs. A system failure or security breach that causes the loss of clinical trial data from completed or future clinical
trials could result in delays in our regulatory approval efforts and significantly increase our costs in order to recover or reproduce the lost data. In addition, to
the  extent  that  any  disruption  or  security  breach  results  in  a  loss  or  damage  to  our  data  or  applications,  or  inappropriate  disclosure  of  confidential  or
proprietary  information,  we  may  incur  liability  as  a  result,  our  drug  discovery  programs  and  competitive  position  may  be  adversely  affected,  and  further
development of our product candidates may be delayed. Any such disruption, failure or security breach could also cause us to incur additional costs to remedy
the damages that arise from such disruption, failure or security breach.

Our insurance policies may not be adequate to compensate us for the potential losses arising from any such disruption, failure or security breach. In
addition, such insurance may not be available to us in the future on economically reasonable terms, or at all. Further, our insurance may not cover all claims
made against us and could have high deductibles in any event, and defending a suit, regardless of its merit, could be costly and divert management attention.

Our operations are vulnerable to interruption by fire, earthquake, power loss, telecommunications failure, terrorist activity and other events beyond our
control, which could harm our business.

Our  facility  is  located  in  a  seismically  active  region  and  in  a  state,  which  also  experiences  large  scale  wildfires  from  time  to  time.  We  have  not
undertaken a systematic analysis of the potential consequences to our business and financial results from a major earthquake, fire, power loss, terrorist activity
or other disasters and do not have a recovery plan for such disasters. In addition, we do not carry sufficient insurance to compensate us for actual losses from
interruption of our business that may occur, and any losses or damages incurred by us could harm our business. We maintain multiple copies of each of our
antibody sequences and electronic data records, most of which we maintain at our headquarters. If our facility were impacted by a seismic event, we could
lose  all  our  antibody  sequences,  which  would  have  an  adverse  effect  on  our  ability  to  perform  our  obligations  under  our  collaborations  and  discover  new
targets.

Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited.

As of December 31, 2018, we had gross U.S. federal and state net operating loss carryforwards of $101.2 million and $39.5 million, respectively,
which  expire  beginning  in  2032.  As  of  December  31,  2018,  the  Company  had  federal  and  California  research  and  other  tax  credit  carryforwards  of  $3.8
million and $2.5 million, respectively. It is possible that we will not generate taxable income in time to use our net operating loss carryforwards before their
expiration  or  at  all.  Under  Sections  382  and  383  of  the  Internal  Revenue  Code  of  1986,  as  amended,  if  a  corporation  undergoes  an  “ownership  change”
(generally defined as a greater than 50 percentage points change (by value) in the ownership of its equity over a rolling three-year period), the corporation’s
ability to use its pre-change net operating loss carryforwards and certain other pre-change tax attributes to offset its post-change income and taxes may be
limited.  We  have  not  yet  undertaken  an  analysis  under  Sections  382  and  383  of  the  Internal  Revenue  Code  to  see  if  any  of  our  net  operating  loss
carryforwards  were  limited  as  a  result  of  our  prior  stock  stales,  including  those  made  as  part  of  our  initial  public  offering.  As  a  result,  we  may  have
experienced such ownership changes in the past, and we may experience ownership changes in the future as a result of shifts in our stock ownership, some of
which are outside our control. Accordingly, our ability to utilize our net operating loss carryforwards could be limited by an “ownership change” as described
above, which could result in increased tax liability to our company.

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Risks Related to Intellectual Property

If we are unable to obtain or protect intellectual property rights, we may not be able to compete effectively in our market.

Our  success  depends  in  significant  part  on  our  and  our  current  or  future  licensors’  ability  to  establish,  maintain  and  protect  patents  and  other
intellectual property rights and operate without infringing the intellectual property rights of others. We have filed numerous patent applications both in the
United States and in foreign jurisdictions to obtain patent rights to inventions we have developed. We have also licensed from third-parties rights to patent
portfolios. Some of these licenses give us the right to prepare, file and prosecute patent applications and maintain and enforce patents we have licensed, and
other licenses may not give us such rights.

The  patent  prosecution  process  is  expensive  and  time-consuming,  and  we  and  our  current  or  future  licensors  may  not  be  able  to  prepare,  file  and
prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner. It is also possible that we or our current and future licensors
will fail to identify patentable aspects of inventions made in the course of development and commercialization activities before it is too late to obtain patent
protection on them. Moreover, in some circumstances, we may not have the right to control the preparation, filing and prosecution of patent applications, or to
maintain the patents, covering technology that we license from third-parties and are reliant on our current and future licensors. Therefore, these patents and
applications  may  not  be  prosecuted  and  enforced  in  a  manner  consistent  with  the  best  interests  of  our  business.  If  our  current  or  future  licensors  fail  to
establish, maintain or protect such patents and other intellectual property rights, such rights may be reduced or eliminated. If our current and future licensors
are not fully cooperative or disagree with us as to the prosecution, maintenance or enforcement of any patent rights, such patent rights could be compromised.

The patent position of biotechnology companies generally is highly uncertain, involves complex legal and factual questions and has in recent years
been the subject of much litigation. As a result, the issuance, scope, validity, enforceability and commercial value of our and our current or future licensors’
patent rights are highly uncertain. Our and our current or future licensors’ pending and future patent applications may not result in patents being issued which
protect our technology or products, in whole or in part, or which effectively prevent others from commercializing competitive technologies and products. The
patent examination process may require us or our current and future licensors to narrow the scope of the claims of our or our current and future licensors’
pending and future patent applications, which may limit the scope of patent protection that may be obtained.

We cannot assure you that all of the potentially relevant prior art relating to our patents and patent applications has been found. If such prior art exists,
it can invalidate a patent or prevent a patent from issuing from a pending patent application. Even if patents do successfully issue and even if such patents
cover  our  product  candidates,  third-parties  may  initiate  an  opposition,  interference,  re-examination,  post-grant  review,  inter partes  review,  nullification  or
derivation action in court or before patent offices, or similar proceedings challenging the validity, enforceability or scope of such patents, which may result in
the  patent  claims  being  narrowed  or  invalidated.  Our  and  our  current  or  future  licensors’  patent  applications  cannot  be  enforced  against  third-parties
practicing the technology claimed in such applications unless and until a patent issues from such applications, and then only to the extent the issued claims
cover the technology.

Because patent applications in the United States and most other countries are confidential for a period of time after filing, and some remain so until
issued, we cannot be certain that we or our current and future licensors were the first to file any patent application related to a product candidate. Furthermore,
if third-parties have filed such patent applications on or before March 15, 2013, an interference proceeding in the United States can be initiated by such third-
parties to determine who was the first to invent any of the subject matter covered by the patent claims of our applications. If third-parties have filed such
applications after March 15, 2013, a derivation proceeding in the United States can be initiated by such third-parties to determine whether our invention was
derived from theirs. Even where we have a valid and enforceable patent, we may not be able to exclude others from practicing our invention where the other
party can show that they used the invention in commerce before our filing date or the other party benefits from a compulsory license. In addition, patents have
a limited lifespan. In the United States, if all maintenance fees are timely paid, the natural expiration of a patent is generally 20 years from its earliest U.S.
filing  date.  Various  extensions  may  be  available,  but  the  life  of  a  patent,  and  the  protection  it  affords,  is  limited.  Even  if  patents  covering  our  product
candidates are obtained, once the patent life has expired for a product, we may be open to competition from competitive medications, including biosimilar or
generic medications. For example, some of the patents that we

54

 
exclusively licensed from The Johns Hopkins University will expire in 2021, one of our owned patent families that claims one of the product candidates will
expire in 2035 in the United States and similar patent applications are pending in foreign jurisdictions with a projected expiration date in 2034, at which time
the  underlying  technology  covered  by  such  patents  can  be  used  by  any  third-party,  including  competitors.  Although  the  patent  term  extensions  under  the
Hatch-Waxman Act in the United States may be available to extend the patent term, we cannot provide any assurances that any such patent term extension
will be obtained and, if so, for how long.

Due to the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates
might  expire  before  or  shortly  after  such  candidates  are  commercialized.  As  a  result,  our  owned  and  licensed  patent  portfolio  may  not  provide  us  with
sufficient rights to exclude others from commercializing products similar or identical to ours. We expect to seek extensions of patent terms where these are
available in any countries where we are prosecuting patents. This includes in the United States under the Drug Price Competition and Patent Term Restoration
Act of 1984, which permits a patent term extension of up to five years beyond the expiration of the patent. However, the applicable authorities, including the
FDA and the U.S. Patent and Trademark Office (“USPTO”) in the United States, and any equivalent foreign regulatory authority, may not agree with our
assessment of whether such extensions are available, and may refuse to grant extensions to our patents, or may grant more limited extensions than we request.
If this occurs, our competitors may take advantage of our investment in development and clinical trials by referencing our clinical and preclinical data and
launch their product earlier than might otherwise be the case.

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

Filing, prosecuting, enforcing and defending patents on product candidates in all countries throughout the world would be prohibitively expensive,
and our or our current and future licensors’ intellectual property rights may not exist in some countries outside the United States or may be less extensive in
some  countries  than  in  the  United  States.  In  addition,  the  laws  of  some  foreign  countries  do  not  protect  intellectual  property  rights  to  the  same  extent  as
federal and state laws in the United States. Consequently, we and our current and future licensors may not be able to prevent third-parties from practicing our
and our current or future licensors’ inventions in all countries outside the United States, or from selling or importing products made using our and our current
or future licensors’ inventions in and into the United States or other jurisdictions. Competitors may use our and our current or future licensors’ 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  and  our  current  and  future  licensors  have  patent  protection,  but  enforcement  is  not  as  strong  as  that  in  the  United  States.  These  products  may
compete with our product candidates, and our and our current or future licensors’ 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  and  other  intellectual  property  protection,
particularly those relating to biotechnology, which could make it difficult for us and our current and future licensors to stop the infringement of our and our
current or future licensors’ patents or marketing of competing products in violation of our and our current or future licensors’ proprietary rights generally.
Proceedings to enforce our and our current or future licensors’ patent rights in foreign jurisdictions could result in substantial costs and divert our and our
current or future licensors’ efforts and attention from other aspects of our business, could put our and our current or future licensors’ patents at risk of being
invalidated or interpreted narrowly and our and our current or future licensors’ patent applications at risk of not issuing and could provoke third-parties to
assert claims against us or our current and future licensors. We or our current and future licensors may not prevail in any lawsuits that we or our current and
future licensors initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful.

Many countries have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third-parties. In addition, many
countries limit the enforceability of patents against government agencies or government contractors. In these countries, the patent owner may have limited
remedies, which could materially diminish the value of such patent. If we or our current and future licensors are forced to grant a license to third-parties with
respect  to  any  patents  relevant  to  our  business,  our  competitive  position  may  be  impaired,  and  our  business,  financial  condition,  results  of  operations  and
prospects may be adversely affected.

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Changes in patent law could diminish the value of patents in general, thereby impairing our ability to protect our product candidates.

Obtaining  and  enforcing  patents  in  the  biopharmaceutical  industry  involves  both  technological  and  legal  complexity  and  is  therefore  costly,  time-
consuming and inherently uncertain. Changes in either the patent laws or interpretation of the patent laws in the United States could increase the uncertainties
and costs. Recent patent reform legislation in the United States and other countries, including the Leahy-Smith America Invents Act (“Leahy-Smith Act”),
signed  into  law  on  September  16,  2011,  could  increase  those  uncertainties  and  costs  surrounding  the  prosecution  of  our  patent  applications  and  the
enforcement or defense of our issued patents. The Leahy-Smith Act includes a number of significant changes to U.S. patent law. These include provisions that
affect the way patent applications are prosecuted, redefine prior art and provide more efficient and cost-effective avenues for competitors to challenge the
validity of patents. 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.  After
March  15,  2013,  under  the  Leahy-Smith  Act,  the  United  States  transitioned  to  a  first  inventor  to  file  system  in  which,  assuming  that  the  other  statutory
requirements 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.  However,  the  Leahy-Smith  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 prospects.

The  U.S.  Supreme  Court  has  ruled  on  several  patent  cases  in  recent  years,  either  narrowing  the  scope  of  patent  protection  available  in  certain
circumstances or weakening the rights of patent owners in certain situations. Depending on future actions by the U.S. Congress, the U.S. courts, the USPTO
and the relevant law-making bodies in other countries, the laws and regulations governing patents could change in unpredictable ways that would weaken our
ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

Obtaining  and  maintaining  our  patent  protection  depends  on  compliance  with  various  procedural,  document  submission,  fee  payment  and  other
requirements  imposed  by  governmental  patent  agencies,  and  our  patent  protection  could  be  reduced  or  eliminated  for  non-compliance  with  these
requirements.

Periodic maintenance and annuity fees on any issued patent are due to be paid to the USPTO and foreign patent agencies in several stages over the
lifetime  of  the  patent.  The  USPTO  and  various  foreign  governmental  patent  agencies  require  compliance  with  a  number  of  procedural,  documentary,  fee
payment and other similar provisions during the patent application process. While an inadvertent lapse can in many cases be cured by payment of a late fee or
by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent
application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Non-compliance events that could result in abandonment or lapse
of  a  patent  or  patent  application  include  failure  to  respond  to  official  actions  within  prescribed  time  limits,  non-payment  of  fees  and  failure  to  properly
legalize  and  submit  formal  documents.  If  we  or  our  current  and  future  licensors  fail  to  maintain  the  patents  and  patent  applications  covering  our  product
candidates, our patent protection could be reduced or eliminated and our competitors might be better able to enter the market with competing products.

If our trademark and tradenames are not adequately protected, then we may not be able to build name recognition in our markets and our business may
be adversely affected.

We  cannot  assure  you  that  competitors  will  not  infringe  our  trademarks  or  that  we  will  have  adequate  resources  to  enforce  our  trademarks.  In
addition, we do not own any registered trademarks for the mark “ALLAKOS.” We cannot assure you that any future trademark applications that we will file
will  be  approved.  During  trademark  registration  proceedings,  we  may  receive  rejections  and  although  we  are  given  an  opportunity  to  respond  to  those
rejections, we may be unable to overcome such rejections. In addition, in proceedings before the USPTO and in proceedings before comparable agencies in
many  foreign  jurisdictions,  third-parties  are  given  an  opportunity  to  oppose  pending  trademark  applications  and  to  seek  to  cancel  registered  trademarks.
Opposition  or  cancellation  proceeding  may  be  filed  against  our  trademarks  and  our  trademarks  may  not  survive  such  proceedings,  which  may  force  us  to
rebrand our name.

If we breach the license agreements related to our product candidates, we could lose the ability to continue the development and commercialization of our
product candidates.

Our commercial success depends upon our ability, and the ability of our current and future licensors, to develop, manufacture, market and sell our

product candidates and use our and our current or future licensors’ wholly-owned

56

 
technologies without infringing the proprietary rights of third-parties. A third-party may hold intellectual property, including patent rights that are important
or  necessary  to  the  development  of  our  products.  As  a  result,  we  are  a  party  to  a  number  of  technology  licenses  that  are  important  to  our  business.  For
example, we have obtained an exclusive license under certain intellectual property related to Siglec-8 from The Johns Hopkins University to develop certain
products and a non-exclusive license from BioWa Inc. and Lonza Sales AG (“Lonza”) to develop and commercialize products manufactured in a particular
mammalian host cell line. If we fail to comply with the obligations under these agreements, including payment and diligence terms, our current and future
licensors may have the right to terminate these agreements, in which event we may not be able to develop, manufacture, market or sell any product that is
covered by these agreements or may face other penalties under the agreements. Such an occurrence could adversely affect the value of the product candidate
being developed under any such agreement. Termination of these agreements or reduction or elimination of our rights under these agreements may result in
our having to negotiate new or reinstated agreements, which may not be available to us on equally favorable terms, or at all, or cause us to lose our rights
under these agreements, including our rights to intellectual property or technology important to our development programs.

Disputes may arise regarding intellectual property subject to a licensing agreement, including:

•

•

•

•

•

•

the scope of rights granted under the license agreement and other interpretation-related issues;

the  extent  to  which  our  technology  and  processes  infringe  on  intellectual  property  of  the  licensor  that  is  not  subject  to  the  licensing
agreement;

the sublicensing of patent and other rights under any collaboration relationships we might enter into in the future;

our diligence obligations under the license agreement and what activities satisfy those diligence obligations;

the inventorship and ownership of inventions and know-how resulting from the joint creation or use of intellectual property by our current
and future licensors and us; and

the priority of invention of patented technology.

If disputes over intellectual property that we have licensed prevent or impair our ability to maintain our current licensing arrangements on acceptable

terms, we may be unable to successfully develop and commercialize the affected product candidates.

Third-parties  may  initiate  legal  proceedings  against  us  alleging  that  we  infringe  their  intellectual  property  rights  or  we  may  initiate  legal  proceedings
against third-parties to challenge the validity or scope of intellectual property rights controlled by third-parties, the outcome of which would be uncertain
and could have an adverse effect on the success of our business.

Third-parties may initiate legal proceedings against us or our current and future licensors alleging that we or our current and future licensors infringe
their intellectual property rights, or we or our current and future licensors may initiate legal proceedings against third-parties to challenge the validity or scope
of  intellectual  property  rights  controlled  by  third-parties,  including  in  oppositions,  interferences,  reexaminations,  inter  partes  reviews  or  derivation
proceedings in the United States or other jurisdictions. These proceedings can be expensive and time-consuming, and many of our or our current and future
licensors’ adversaries in these proceedings may have the ability to dedicate substantially greater resources to prosecuting these legal actions than we or our
current and future licensors.

Parties  making  claims  against  us  may  obtain  injunctive  or  other  equitable  relief,  which  could  effectively  block  our  ability  to  further  develop  and
commercialize one or more of our product candidates. Defense of these claims, regardless of their merit, would involve substantial litigation expense and
would be a substantial diversion of management and employee resources from our business. An unfavorable outcome could require us or our current and
future licensors to cease using the related technology or developing or commercializing our product candidates, or to attempt to license rights to it from the
prevailing  party.  Our  business  could  be  harmed  if  the  prevailing  party  does  not  offer  us  or  our  current  and  future  licensors  a  license  on  commercially
reasonable terms or at all. Even if we or our current and future licensors obtain a license, it may be non-exclusive, thereby giving our competitors access to
the same technologies licensed to us or our current and future licensors. In addition, we could be found liable for monetary

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damages, including treble damages and attorneys’ fees, if we are found to have willfully infringed a patent. A finding of infringement could prevent us from
commercializing our product candidates or force us to cease some of our business operations, which could harm our business.

We may be subject to claims by third-parties asserting that our employees or we have misappropriated their intellectual property, or claiming ownership of
what we regard as our own intellectual property.

Many  of  our  employees,  including  our  senior  management,  were  previously  employed  at  other  biopharmaceutical  companies,  including  potential
competitors.  Some  of  these  employees  executed  proprietary  rights,  non-disclosure  and/or  non-competition  agreements  in  connection  with  such  previous
employment. Although we try to ensure that our employees 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  employees  have  used  or  disclosed  confidential  information  or  intellectual  property,  including  trade  secrets  or  other
proprietary information, of any such employee’s former employer. Litigation may be necessary to defend against these claims.

If we fail in prosecuting or defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or
personnel or sustain damages. Such intellectual property rights could be awarded to a third-party, and we could be required to obtain a license from such
third-party  to  commercialize  our  technology  or  products.  Such  a  license  may  not  be  available  on  commercially  reasonable  terms  or  at  all.  Even  if  we
successfully prosecute or defend against such claims, litigation could result in substantial costs and distract management.

Our inability to protect our confidential information and trade secrets would harm our business and competitive position.

In addition to seeking patents for some of our technology and products, we also rely on trade secrets, including unpatented know-how, technology
and other proprietary information, to maintain our competitive position. Trade secrets can be difficult to protect. We seek to protect these trade secrets, in part,
by  entering  into  non-disclosure  and  confidentiality  agreements  with  parties  who  have  access  to  them,  such  as  our  employees,  contract  manufacturers,
consultants,  advisors  and  other  third-parties.  We  also  enter  into  confidentiality  and  invention  or  patent  assignment  agreements  with  our  employees  and
consultants. Despite these efforts, any of the 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. Misappropriation or unauthorized disclosure of our trade secrets could significantly affect our
competitive position and may have a material adverse effect on our business. Enforcing a claim that a party illegally disclosed or misappropriated a trade
secret  is  difficult,  expensive  and  time-consuming,  and  the  outcome  is  unpredictable.  Some  courts  both  within  and  outside  the  United  States  may  be  less
willing or unwilling to protect trade secrets. Furthermore, trade secret protection does not prevent competitors from independently developing substantially
equivalent information and techniques and we cannot guarantee that our competitors will not independently develop substantially equivalent information and
techniques. If a competitor lawfully obtained or independently developed any of our trade secrets, we would have no right to prevent such competitor from
using that technology or information to compete with us. Failure on our part to adequately protect our trade secrets and our confidential information would
harm our business and our competitive position.

Risks Related to Our Dependence on Third-Parties

We rely on third-parties to conduct our clinical trials and those third-parties may not perform satisfactorily, including failing to meet deadlines for the
completion of such trials, research and studies.

We do not have the ability to independently conduct our clinical trials. We currently rely on third-parties, such as CROs, clinical data management
organizations,  medical  institutions  and  clinical  investigators,  to  conduct  our  clinical  trials  of  AK002  and  expect  to  continue  to  rely  upon  third-parties  to
conduct additional clinical trials of AK002 and our other product candidates. Third-parties have a significant role in the conduct of our clinical trials and the
subsequent collection and analysis of data. These third-parties are not our employees, and except for remedies available to us under our agreements, we have
limited ability to control the amount or timing of resources that any

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such third-party will devote to our clinical trials. Some of these third-parties may terminate their engagements with us at any time. If we need to enter into
alternative arrangements, it would delay our drug development activities.

Our reliance on these third-parties for research and development activities will reduce our control over these activities but will not relieve us of our
regulatory responsibilities. For example, we will remain responsible for ensuring that each of our clinical trials is conducted in accordance with the general
investigational  plan  and  protocols  for  the  trial.  Moreover,  the  FDA  requires  us  to  comply  with  GCP  standards,  regulations  for  conducting,  recording  and
reporting the results of clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of trial
participants  are  protected.  The  EMA  also  requires  us  to  comply  with  similar  standards.  Regulatory  authorities  enforce  these  GCP  requirements  through
periodic inspections of trial sponsors, principal investigators and trial sites. If we or any of our CROs fail to comply with applicable GCP requirements, the
clinical data generated in our clinical trials may be deemed unreliable and the FDA, EMA or comparable foreign regulatory authorities may require us to
perform additional clinical trials before approving our marketing applications. We cannot assure you that upon inspection by a given regulatory authority,
such regulatory authority will determine that any of our clinical trials comply with GCP regulations. In addition, our clinical trials must be conducted with
product produced under current cGMP regulations. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the
marketing  approval  process.  We  also  are  required  to  register  certain  ongoing  clinical  trials  and  post  the  results  of  certain  completed  clinical  trials  on  a
government-sponsored database, ClinicalTrials.gov, within certain timeframes. Failure to do so can result in fines, adverse publicity and civil and criminal
sanctions.

The third-parties we rely on for these services may also have relationships with other entities, some of which may be our competitors. If these third-
parties do not successfully carry out their contractual duties, meet expected deadlines or conduct our clinical trials 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 our product candidates and will not be able to,
or may be delayed in our efforts to, successfully commercialize our product candidates.

We contract with third-parties for the production of our product candidates for preclinical studies and, in the case of AK002, our ongoing clinical trials,
and expect to continue to do so for additional clinical trials and ultimately for commercialization. This reliance on third-parties increases the risk that we
will not have sufficient quantities of our product candidates or drugs or such quantities at an acceptable cost, which could delay, prevent or impair our
development or commercialization efforts.

We  do  not  currently  have  the  infrastructure  or  internal  capability  to  manufacture  supplies  of  our  product  candidates  for  use  in  development  and
commercialization. We rely, and expect to continue to rely, on third-party manufacturers for the production of our product candidates for preclinical studies
and clinical trials under the guidance of members of our organization. In the case of AK002, we rely on a single third-party manufacturer, Lonza, and we
currently have no alternative manufacturer in place. We do not have long-term supply agreements and we purchase our required drug product on a purchase
order basis. If we were to experience an unexpected loss of supply of AK002, or any of our other product candidates, for any reason, whether as a result of
manufacturing,  supply  or  storage  issues  or  otherwise,  we  could  experience  delays,  disruptions,  suspensions  or  terminations  of,  or  be  required  to  restart  or
repeat, any pending or ongoing clinical trials. Replacement of our sole manufacturer of AK002 would result in substantial delay and interrupt our clinical
trials involving AK002.

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. We may be unable to maintain or establish required agreements with third-party manufacturers or to do so on acceptable terms. Even if we are able
to establish agreements with third-party manufacturers, reliance on third-party manufacturers entails additional risks, including:

•

•

•

the possible failure of the third-party to manufacture our product candidate according to our schedule, or at all, including if our third-party
contractors  give  greater  priority  to  the  supply  of  other  products  over  our  product  candidates  or  otherwise  do  not  satisfactorily  perform
according to the terms of the agreements between us and them;

the possible termination or nonrenewal of agreements by our third-party contractors at a time that is costly or inconvenient for us;

the possible breach by the third-party contractors of our agreements with them;

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the failure of third-party contractors to comply with applicable regulatory requirements;

the possible failure of the third-party to manufacture our product candidates according to our specifications;

the possible mislabeling of clinical supplies, potentially resulting in the wrong dose amounts being supplied or active drug or placebo not
being properly identified;

the possibility of clinical supplies not being delivered to clinical sites on time, leading to clinical trial interruptions, or of drug supplies not
being distributed to commercial vendors in a timely manner, resulting in lost sales; and

the possible misappropriation of our proprietary information, including our trade secrets and know-how.

We  do  not  have  complete  control  over  all  aspects  of  the  manufacturing  process  of,  and  are  dependent  on,  our  contract  manufacturing  partners,
including  Lonza,  for  compliance  with  cGMP  regulations  for  manufacturing  both  active  drug  substances  and  finished  drug  products.  Third-party
manufacturers  may  not  be  able  to  comply  with  cGMP  regulations  or  similar  regulatory  requirements  outside  of  the  United  States.  If  our  contract
manufacturers, including Lonza, cannot successfully manufacture material that conforms to our specifications and the strict regulatory requirements of the
FDA or others, they will not be able to secure and/or maintain marketing approval for their manufacturing facilities. In addition, we do not have control over
the ability of our contract manufacturers to maintain adequate quality control, quality assurance and qualified personnel. If the FDA or a comparable foreign
regulatory authority does not approve these facilities for the manufacture of our product candidates or if it withdraws any such approval in the future, we may
need to find alternative manufacturing facilities, which would significantly impact our ability to develop, obtain marketing approval for or market our product
candidates,  if  approved.  Our  failure,  or  the  failure  of  our  third-party  manufacturers,  to  comply  with  applicable  regulations  could  result  in  sanctions  being
imposed on us, including fines, injunctions, civil penalties, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of product
candidates or drugs, operating restrictions and criminal prosecutions, any of which could significantly and adversely affect supplies of our drugs and harm our
business and results of operations.

Our current and anticipated future dependence upon others for the manufacture of our product candidates or drugs may adversely affect our future

profit margins and our ability to commercialize any drugs that receive marketing approval on a timely and competitive basis.

We  may  not  gain  the  efficiencies  we  expect  from  further  scale-up  of  manufacturing  of  AK002,  and  our  third-party  manufacturers  may  be  unable  to
successfully  scale-up  manufacturing  in  sufficient  quality  and  quantity  for  AK002  or  our  other  product  candidates,  which  could  delay  or  prevent  the
conducting of our clinical trials or the development or commercialization of our other product candidates.

Our third-party manufacturer, Lonza, is currently manufacturing AK002 at a scale that is sufficient for us to complete our planned clinical trials and,
if we receive marketing approval, to commercialize AK002 for the indications we are currently targeting. However, we may consider increasing the batch
scale to gain cost efficiencies. If Lonza is unable to scale-up the manufacture of AK002 at such time, we may not gain such cost efficiencies and may not
realize the benefits that would typically be expected from further scale-up of manufacturing of AK002.

In addition, in order to conduct clinical trials of any of our other product candidates, we may need to manufacture them in large quantities. Our third-
party manufacturers, including Lonza, may be unable to successfully increase the manufacturing capacity for any of these product candidates in a timely or
cost-effective  manner,  or  at  all.  In  addition,  quality  issues  may  arise  during  scale-up  activities.  If  our  third-party  manufacturers  are  unable  to  successfully
scale  up  the  manufacture  of  our  other  product  candidates  in  sufficient  quality  and  quantity,  the  development,  testing  and  clinical  trials  of  that  product
candidate  may  be  delayed  or  become  infeasible,  and  marketing  approval  or  commercial  launch  of  any  resulting  product  may  be  delayed  or  not  obtained,
which could significantly harm our business. 

Changes in methods of product candidate manufacturing or formulation may result in additional costs or delay.

As  product  candidates  progress  through  preclinical  and  late  stage  clinical  trials  to  marketing  approval  and  commercialization,  it  is  common  that

various aspects of the development program, such as manufacturing methods

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and formulation, are altered along the way in an effort to optimize yield, manufacturing batch size, minimize costs and achieve consistent quality and results.
Such  changes  carry  the  risk  that  they  will  not  achieve  these  intended  objectives.  Any  of  these  changes  could  cause  our  product  candidates  to  perform
differently and affect the results of planned clinical trials or other future clinical trials conducted with the altered materials. This could delay completion of
clinical trials, require the conduct of bridging clinical trials or the repetition of one or more clinical trials, increase clinical trial costs, delay approval of our
product candidates and jeopardize our ability to commercialize our product candidates and generate revenue.

The  manufacture  of  biologics  is  complex  and  our  third-party  manufacturers  may  encounter  difficulties  in  production.  If  any  of  our  third-party
manufacturers encounter such difficulties, our ability to provide adequate supply of our product candidates for clinical trials or our products for patients,
if approved, could be delayed or prevented.

Manufacturing biologics, especially in large quantities, is complex and may require the use of innovative technologies to handle living cells. Each lot
of  an  approved  biologic  must  undergo  thorough  testing  for  identity,  strength,  quality,  purity  and  potency.  Manufacturing  biologics  requires  facilities
specifically designed for and validated for this purpose, and sophisticated quality assurance and quality control procedures are necessary. Slight deviations
anywhere in the manufacturing process, including filling, labeling, packaging, storage and shipping and quality control and testing, may result in lot failures,
product recalls or spoilage. Lonza, our current third-party manufacturer, has, and our future third-party manufacturers may have, multiple locations at which
they conduct manufacturing. However, AK002 and our other product candidates are currently only being manufactured at one of Lonza’s locations. If this
location  becomes  unavailable  at  its  anticipated  capacity  or  the  location  of  the  manufacture  of  AK002  or  our  other  product  candidates  is  changed  for  any
reason, it could result in a delay or disruption to the manufacturing process or lead to difficulties that we did not experience at the original manufacturing
location. When changes are made to the manufacturing process, we may be required to provide preclinical and clinical data showing the comparable identity,
strength, quality, purity or potency of the products before and after such changes. If microbial, viral or other contaminations are discovered at the facilities of
our  manufacturer,  such  facilities  may  need  to  be  closed  for  an  extended  period  of  time  to  investigate  and  remedy  the  contamination,  which  could  delay
clinical trials and adversely harm our business. The use of biologically derived ingredients can also lead to allegations of harm, including infections or allergic
reactions, or closure of product facilities due to possible contamination. If our manufacturers are unable to produce sufficient quantities for clinical trials or
for commercialization as a result of these challenges, our development and commercialization efforts would be impaired, which would have an adverse effect
on our business, financial condition, results of operations and growth prospects.

If we engage in future acquisitions or strategic partnerships, this may increase our capital requirements, dilute our stockholders, cause us to incur debt or
assume contingent liabilities, and subject us to other risks.

We may evaluate various acquisition opportunities and strategic partnerships, including licensing or acquiring complementary products, intellectual

property rights, technologies or businesses. Any potential acquisition or strategic partnership may entail numerous risks, including:

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increased operating expenses and cash requirements;

the assumption of additional indebtedness or contingent liabilities;

the issuance of our equity securities;

assimilation of operations, intellectual property and products of an acquired company, including difficulties associated with integrating new
personnel;

the  diversion  of  our  management’s  attention  from  our  existing  product  programs  and  initiatives  in  pursuing  such  a  strategic  merger  or
acquisition;

retention of key employees, the loss of key personnel and uncertainties in our ability to maintain key business relationships;

risks and uncertainties associated with the other party to such a transaction, including the prospects of that party and their existing products or
product candidates and marketing approvals; and

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our inability to generate revenue from acquired technology and/or products sufficient to meet our objectives in undertaking the acquisition or
even to offset the associated acquisition and maintenance costs.

In  addition,  if  we  undertake  acquisitions,  we  may  issue  dilutive  securities,  assume  or  incur  debt  obligations,  incur  large  one-time  expenses  and
acquire  intangible  assets  that  could  result  in  significant  future  amortization  expense.  Moreover,  we  may  not  be  able  to  locate  suitable  acquisition
opportunities, and this inability could impair our ability to grow or obtain access to technology or products that may be important to the development of our
business.

If we decide to establish collaborations, but are not able to establish those collaborations, we may have to alter our development and commercialization
plans.

Our  drug  development  programs  and  the  potential  commercialization  of  our  product  candidates  will  require  substantial  additional  cash  to  fund
expenses. We may seek to selectively form collaborations to expand our capabilities, potentially accelerate research and development activities and provide
for commercialization activities by third-parties.

We would face significant competition in seeking appropriate collaborators. Whether we reach a definitive agreement for a collaboration will depend,
among  other  things,  upon  our  assessment  of  the  collaborator’s  resources  and  expertise,  the  terms  and  conditions  of  the  proposed  collaboration  and  the
proposed collaborator’s evaluation of a number of factors. Those factors may include the design or results of clinical trials, the likelihood of approval by the
FDA or comparable foreign regulatory authorities, the potential market for the subject product candidate, the costs and complexities of manufacturing and
delivering  such  product  candidate  to  patients,  the  potential  of  competing  drugs,  the  existence  of  uncertainty  with  respect  to  our  ownership  of  intellectual
property and industry and market conditions generally. The potential collaborator may also consider alternative product candidates or technologies for similar
indications that may be available to collaborate on and whether such a collaboration could be more attractive than the one with us for our product candidate.

Collaborations  are  complex  and  time-consuming  to  negotiate  and  document.  In  addition,  there  have  been  a  significant  number  of  recent  business
combinations among large pharmaceutical companies that have resulted in a reduced number of potential future collaborators. Even if we are successful in
entering  into  a  collaboration,  the  terms  and  conditions  of  that  collaboration  may  restrict  us  from  entering  into  future  agreements  on  certain  terms  with
potential collaborators.

If and when we seek to enter into collaborations, we may not be able to negotiate collaborations on a timely basis, on acceptable terms, or at all. If we
are unable to do so, we may have to curtail the development of a product candidate, reduce or delay its development program or one or more of our other
development  programs,  delay  its  potential  commercialization  or  reduce  the  scope  of  any  sales  or  marketing  activities,  or  increase  our  expenditures  and
undertake development or commercialization activities at our own expense.

Risks Related to Ownership of Our Common Stock

The market price of our stock may continue to be volatile, which could result in substantial losses for investors.

The trading price of our common stock has been, and is likely to continue to be, highly volatile and subject to wide fluctuations in response to various
factors, some of which we cannot control. We priced our IPO at $18.00 per share on July 19, 2018 and, our common stock reached a high of $65.48 per share
during the fourth quarter of 2018. As of March 7, 2019 the closing price of our common stock was $37.11. The trading price of our common stock could be
subject  to  wide  fluctuations  in  response  to  various  factors,  which  in  addition  to  the  factors  discussed  in  this  “Risk  Factors”  section  and  elsewhere  in  this
Annual Report on Form 10-K, include:

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•

the timing and results of preclinical studies and clinical trials of our product candidates or those of our competitors;

the success of competitive products or announcements by potential competitors of their product development efforts;

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regulatory actions with respect to our products or our competitors’ products;

actual or anticipated changes in our growth rate relative to 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 scientific or management personnel;

announcements  by  us  or  our  competitors  of  significant  acquisitions,  strategic  collaborations,  joint  ventures,  collaborations  or  capital
commitments;

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

fluctuations in the valuation of companies perceived by investors to be comparable to us;

market conditions in the pharmaceutical and biotechnology sector;

changes in the structure of healthcare payment systems;

share price and volume fluctuations attributable to inconsistent trading volume levels of our shares;

announcement or expectation of additional financing efforts;

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

expiration of market stand-off or lock-up agreements; and

general economic, industry and market conditions.

In addition, the stock market in general, and pharmaceutical and biotechnology companies in particular, have experienced extreme price and volume
fluctuations  that  have  often  been  unrelated  or  disproportionate  to  the  operating  performance  of  these  companies.  Broad  market  and  industry  factors  may
negatively affect the market price of our common stock, regardless of our actual operating performance. The realization of any of the above risks or any of a
broad range of other risks, including those described in this “Risk Factors” section, could have a dramatic and adverse impact on the market price of our
common stock.

If securities or industry analysts do not publish research or reports about our business, or if they issue an adverse or misleading opinion regarding our
stock, our stock price and trading volume could decline.

The  trading  market  for  our  common  stock  is  influenced  by  the  research  and  reports  that  industry  or  securities  analysts  publish  about  us  or  our
business. If any of the analysts covering us issue an adverse or misleading opinion regarding us, our business model, our intellectual property or our stock
performance, or if our operating results fail to meet the expectations of analysts, our stock price would likely decline. In addition, if one or more of these
analysts cease coverage of us or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock
price or trading volume to decline.

Raising additional capital may restrict our operations or require us to relinquish rights to our technologies or product candidates, and if we sell shares of
our common stock in future financings, stockholders may experience immediate dilution and, as a result, our stock price may decline.

Until  such  time,  if  ever,  as  we  can  generate  substantial  product  revenues,  we  expect  to  finance  our  cash  needs  through  a  combination  of  equity
offerings, debt financings, partnerships and marketing, distribution or licensing arrangements. We do not have any committed external source of funds. We
may also from time to time issue additional shares of common stock at a discount from the then current trading price of our common stock. As a result, our
stockholders would experience immediate dilution upon the purchase of any shares of our common stock sold at such discount. In addition, as opportunities
present themselves, we may enter into financing or similar arrangements in the future, including the issuance of debt securities, preferred stock or common
stock. If we issue common stock or securities convertible into common stock, our common stockholders would experience additional dilution and, as a

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result,  our  stock  price  may  decline.  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 partnerships or marketing, distribution or licensing arrangements with third parties, we may have to relinquish
valuable  rights  to  our  technologies,  future  revenue  streams  or  product  candidates  or  to  grant  licenses  on  terms  that  may  not  be  favorable  to  us.  If  we  are
unable  to  raise  additional  funds  through  equity  or  debt  financings  when  needed,  we  may  be  required  to  delay,  limit,  reduce  or  terminate  our  product
development  or  future  commercialization  efforts  or  grant  rights  to  develop  and  market  product  candidates  that  we  would  otherwise  prefer  to  develop  and
market ourselves.

Our operating results may fluctuate significantly, which makes our future operating results difficult to predict and could cause our operating results to
fall below expectations or our guidance.

Our quarterly and annual operating results may fluctuate significantly in the future, which makes it difficult for us to predict our future operating
results. From time to time, we may enter into license or collaboration agreements or strategic partnerships with other companies that include development
funding and significant upfront and milestone payments and/or royalties, which may become an important source of our revenue. These upfront and milestone
payments may vary significantly from period to period and any such variance could cause a significant fluctuation in our operating results from one period to
the next.

In addition, we measure compensation cost for stock-based awards made to employees at the grant date of the award, based on the fair value of the
award as determined by our board of directors, and recognize the cost as an expense over the employee’s requisite service period. As the variables that we use
as a basis for valuing these awards change over time, including our underlying stock price and stock price volatility, the magnitude of the expense that we
must recognize may vary significantly.

Furthermore, our operating results may fluctuate due to a variety of other factors, many of which are outside of our control and may be difficult to

predict, including the following:

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•

the  timing  and  cost  of,  and  level  of  investment  in,  research  and  development  activities  relating  to  our  current  and  any  future  product
candidates, which will change from time to time;

our ability to enroll patients in clinical trials and the timing of enrollment;

the cost of manufacturing our current and any future product candidates, which may vary depending on FDA guidelines and requirements,
the quantity of production and the terms of our agreements with manufacturers;

expenditures that we will or may incur to acquire or develop additional product candidates and technologies;

the timing and outcomes of clinical trials for AK002 and any of our future product candidates or competing product candidates;

the need to conduct unanticipated clinical trials or trials that are larger or more complex than anticipated;

competition from existing and potential future products that compete with AK002 and any of our future product candidates, and changes in
the competitive landscape of our industry, including consolidation among our competitors or partners;

any delays in regulatory review or approval of AK002 or any of our future product candidates;

the level of demand for AK002 and any of our future product candidates, if approved, which may fluctuate significantly and be difficult to
predict;

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the risk/benefit profile, cost and reimbursement policies with respect to our products candidates, if approved, and existing and potential future
products that compete with AK002 and any of our future product candidates;

our ability to commercialize AK002 and any of our future product candidates, if approved, inside and outside of the United States, either
independently or working with third-parties;

our ability to establish and maintain collaborations, licensing or other arrangements;

our ability to adequately support future growth;

potential unforeseen business disruptions that increase our costs or expenses;

future accounting pronouncements or changes in our accounting policies; and

the changing and volatile global economic environment.

The cumulative effect of these factors could result in large fluctuations and unpredictability in our quarterly and annual operating results. As a result,
comparing our operating results on a period-to-period basis may not be meaningful. Investors should not rely on our past results as an indication of our future
performance. This variability and unpredictability could also result in our failing to meet the expectations of industry or financial analysts or investors for any
period. If our revenue or operating results fall below the expectations of analysts or investors or below any forecasts we may provide to the market, or if the
forecasts we provide to the market are below the expectations of analysts or investors, the price of our common stock could decline substantially. Such a stock
price decline could occur even when we have met any previously publicly stated guidance we may provide.

Our principal stockholders and management own a significant percentage of our stock and will be able to exert significant control over matters subject to
stockholder approval.

As  of  December  31,  2018,  our  executive  officers,  directors,  holders  of  5%  or  more  of  our  capital  stock  and  their  respective  affiliates  beneficially
owned  approximately  77.4%  of  our  outstanding  voting  stock.  As  a  result,  this  group  of  stockholders  has  the  ability  to  significantly  influence  all  matters
requiring stockholder approval, including the election of directors, amendments of our organizational documents or approval of any merger, sale of assets or
other major corporate transaction. This may prevent or discourage unsolicited acquisition proposals or offers for our common stock that you may feel are in
your best interest as one of our stockholders. The interests of this group of stockholders may not always coincide with your interests or the interests of other
stockholders and they may act in a manner that advances their best interests and not necessarily those of other stockholders, including seeking a premium
value for their common stock, and might affect the prevailing market price for our common stock.

We  are  an  emerging  growth  company,  and  we  cannot  be  certain  if  the  reduced  reporting  requirements  applicable  to  emerging  growth  companies  will
make our common stock less attractive to investors.

We are an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (“JOBS Act”). For as long as we continue to be
an emerging growth company, we may take advantage of exemptions from various reporting requirements that are applicable to other public companies that
are not emerging growth companies, including not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley
Act  of  2002,  as  amended  (“Sarbanes-Oxley  Act”),  reduced  disclosure  obligations  regarding  executive  compensation  in  our  periodic  reports  and  proxy
statements and exemptions from the requirements of holding nonbinding advisory stockholder votes on executive compensation and stockholder approval of
any golden parachute payments not previously approved. We cannot predict if investors will find our common stock less attractive because we may rely on
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 will remain an emerging growth company until the earlier of (i) the last day of the fiscal year (a) following the fifth anniversary of the closing of
our initial public offering, (b) in which we have total annual gross revenue of at least $1.07 billion or (c) in which we are deemed to be a large accelerated
filer, which requires the market value of our common stock that is held by non-affiliates to exceed $700 million as of the prior June 30th, and (ii) the date on
which we have issued more than $1 billion in non-convertible debt during the prior three-year period.

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Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards
apply to private companies. We have irrevocably elected not to avail ourselves of this exemption from new or revised accounting standards and, therefore,
will be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies. As a result, changes in
rules of U.S. generally accepted accounting principles or their interpretation, the adoption of new guidance or the application of existing guidance to changes
in our business could significantly affect our financial position and results of operations.

We will likely incur significant additional costs in order to comply with the SEC rules implementing Section 404 of the Sarbanes-Oxley Act.

We will likely incur significant additional costs in order to comply with the SEC rules implementing Section 404 of the Sarbanes-Oxley Act. Under
these rules, beginning with our annual report on Form 10-K for the year ending December 31, 2019, we will be required to make a formal assessment of the
effectiveness  of  our  internal  control  over  financial  reporting,  and  once  we  cease  to  be  an  emerging  growth  company,  we  will  be  required  to  include  an
attestation  report  on  internal  control  over  financial  reporting  issued  by  our  independent  registered  public  accounting  firm.  To  achieve  compliance  with
Section 404 within the prescribed period, we will be engaging in a process to document and evaluate our internal control over financial reporting, which is
both costly and challenging. In this regard, we will need to continue to dedicate internal resources, potentially engage outside consultants and adopt a detailed
work plan to assess and document the adequacy of our internal control over financial reporting, continue steps to improve control processes as appropriate,
validate  through  testing  that  controls  are  designed  and  operating  effectively,  and  implement  a  continuous  reporting  and  improvement  process  for  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 the course of its testing, our management
may  identify  material  weaknesses  or  deficiencies  which  may  not  be  remedied  in  time  to  meet  the  deadline  imposed  by  the  Sarbanes-Oxley  Act.  These
reporting and other obligations place significant demands on our management and administrative and operational resources, including accounting resources.

Our disclosure controls and procedures may not prevent or detect all errors or acts of fraud.

We are subject to the periodic reporting requirements of the Exchange Act. We designed our disclosure controls and procedures to reasonably assure
that  information  we  must  disclose  in  reports  we  file  or  submit  under  the  Exchange  Act  is  accumulated  and  communicated  to  management,  and  recorded,
processed,  summarized  and  reported  within  the  time  periods  specified  in  the  rules  and  forms  of  the  SEC.  We  believe  that  any  disclosure  controls  and
procedures  or  internal  controls  and  procedures,  no  matter  how  well-conceived  and  operated,  can  provide  only  reasonable,  not  absolute,  assurance  that  the
objectives of the control system are met.

These inherent limitations include the facts that judgments in decision-making can be faulty and that breakdowns can occur because of simple error
or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by an unauthorized
override of the controls. Accordingly, because of the inherent limitations in our control system, misstatements due to error or fraud may occur and not be
detected.

We may be subject to securities litigation, which is expensive and could divert management attention.

The market price of our common stock may be volatile and, in the past, companies that have experienced volatility in the market price of their stock
have been subject to securities class action litigation. We may be the target of this type of litigation in the future. Securities litigation against us could result in
substantial costs and divert our management’s attention from other business concerns, which could seriously harm our business.

66

 
We have not paid and do not intend to pay dividends on our common stock so any returns will be limited to the value of our stock.

We  have  never  declared  or  paid  any  cash  dividends  on  our  common  stock.  We  currently  anticipate  that  we  will  retain  future  earnings  for  the
development, operation and expansion of our business and do not anticipate declaring or paying any cash dividends for the foreseeable future. Any return to
stockholders will therefore be limited to any appreciation in the value of their stock.

Provisions  in  our  amended  and  restated  certificate  of  incorporation  and  amended  and  restated  bylaws  and  Delaware  law  might  discourage,  delay  or
prevent a change in control of our company or changes in our management and, therefore, depress the market price of our common stock.

Our amended and restated certificate of incorporation and amended and restated bylaws contain provisions that could depress the market price of our
common  stock  by  acting  to  discourage,  delay  or  prevent  a  change  in  control  of  our  company  or  changes  in  our  management  that  the  stockholders  of  our
company may deem advantageous. These provisions, among other things:

•

•

•

•

•

•

•

•

•

•

establish a classified board of directors so that not all members of our board are elected at one time;

permit only the board of directors to establish the number of directors and fill vacancies on the board;

provide that directors may only be removed “for cause” and only with the approval of two-thirds of our stockholders;

authorize the issuance of “blank check” preferred stock that our board could use to implement a stockholder rights plan (also known as a
“poison pill”);

eliminate the ability of our stockholders to call special meetings of stockholders;

prohibit stockholder action by written consent, which requires all stockholder actions to be taken at a meeting of our stockholders;

prohibit cumulative voting;

authorize our board of directors to amend the bylaws;

establish  advance  notice  requirements  for  nominations  for  election  to  our  board  or  for  proposing  matters  that  can  be  acted  upon  by
stockholders at annual stockholder meetings; and

require a super-majority vote of stockholders to amend some provisions described above.

In addition, Section 203 of the General Corporation Law of the State of Delaware (“DGCL”), prohibits a publicly-held Delaware corporation from
engaging in a business combination with an interested stockholder, generally a person which together with its affiliates owns, or within the last three years has
owned, 15% of our voting stock, for a period of three years after the date of the transaction in which the person became an interested stockholder, unless the
business combination is approved in a prescribed manner.

Any provision of our amended and restated certificate of incorporation, amended and restated bylaws or Delaware law that has the effect of delaying
or preventing a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our capital stock and could also
affect the price that some investors are willing to pay for our common stock.

67

 
 
 
 
 
 
 
 
 
 
 
Our amended and restated certificate of incorporation provides that the Court of Chancery of the State of Delaware and the federal district courts of the
United States of America will be the exclusive forums for substantially all disputes between us and our stockholders, which could limit our stockholders’
ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our amended and restated certificate of incorporation provides that the Court of Chancery of the State of Delaware is the exclusive forum for:

•

•

•

•

any derivative action or proceeding brought on our behalf;

any action asserting a claim of breach of fiduciary duty;

any action asserting a claim against us arising under the DGCL, our amended and restated certificate of incorporation or our amended and
restated bylaws; and

any action asserting a claim against us that is governed by the internal-affairs doctrine.

Our  amended  and  restated  certificate  of  incorporation  further  provides  that  the  federal  district  courts  of  the  United  States  of  America  will  be  the

exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act of 1933, as amended (the “Securities Act”).

These exclusive-forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or
our directors, officers or other employees, which may discourage lawsuits against us and our directors, officers and other employees. If a court were to find
either  exclusive-forum  provision  in  our  amended  and  restated  certificate  of  incorporation  to  be  inapplicable  or  unenforceable  in  an  action,  we  may  incur
additional costs associated with resolving the dispute in other jurisdictions, which could seriously harm our business.

Item 1B. Unresolved Staff Comments.

If the registrant is an accelerated filer or a large accelerated filer, as defined in Rule 12b-2 of the Exchange Act (§240.12b-2 of this chapter), or is a
well-known seasoned issuer as defined in Rule 405 of the Securities Act (§230.405 of this chapter) and has received written comments from the Commission
staff regarding its periodic or current reports under the Act not less than 180 days before the end of its fiscal year to which the annual report relates, and such
comments remain unresolved, disclose the substance of any such unresolved comments that the registrant believes are material. Such disclosure may provide
other information including the position of the registrant with respect to any such comment.

Item 2. Properties.

Our corporate headquarters are currently located in Redwood City, California, where we lease 25,136 square feet of office, research and development
and laboratory space pursuant to a lease agreement that commenced on November 1, 2018 and expires on July 31, 2029, with an option to extend for five
years.

We believe that our facilities will be sufficient for our needs over the next twelve months. We may need additional space as we expand our business

and believe that additional space when needed, will be available on commercially reasonable terms.

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.

68

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

Our common stock has been listed on the NASDAQ Global Select Market under the symbol “ALLK”.

PART II

Holders of Common Stock

As of March 7, 2019, there were 35 holders of record of our common stock. Because many of our shares of common stock are held by brokers and
other institutions on behalf of stockholders, we are unable to estimate the total number of beneficial owners of our common stock represented by these record
holders.

Dividend Policy

We have never declared or paid any cash dividends on our common stock or any other securities. We anticipate that we will retain all available funds
and any future earnings, if any, for use in the operation of our business and do not anticipate paying cash dividends in the foreseeable future. In addition,
future debt instruments may materially restrict our ability to pay dividends on our common stock. Payment of future cash dividends, if any, will be at the
discretion of the board of directors after taking into account various factors, including our financial condition, operating results, current and anticipated cash
needs, the requirements of current or then-existing debt instruments and other factors the board of directors deems relevant.

Performance Graph

This graph below is not “soliciting material” or deemed “filed” with the SEC for purposes of Section 18 of the Exchange Act, or otherwise subject to
liabilities under that Section, and shall not be deemed incorporated by reference into this Annual Report on Form 10-K or into any other filing of Allakos Inc.
under the Securities Act, as amended, except to the extent that we specifically incorporate this information by reference therein, whether made before or after
the date hereof and irrespective of any general incorporation language in any such filing.

The following graph compares the cumulative total return to stockholder return on our common stock relative to the cumulative total returns of the
NASDAQ Composite Index and the NASDAQ Biotechnology Index. An investment of $100 is assumed to have been made in our common stock and each
index  on  July  19,  2018  (the  first  day  of  trading  of  our  common  stock)  and  its  relative  performance  is  tracked  through  December  31,  2018.  Pursuant  to
applicable Securities and Exchange Commission rules, all values assume reinvestment of the full amount of all dividends, however no dividends have been
declared on our common stock to date. The stockholder returns shown on

69

 
the  graph  below  are  based  on  historical  results  and  are  not  indicative  of  future  performance,  and  we  do  not  make  or  endorse  any  predictions  as  to  future
stockholder returns.

COMPARISON OF CUMULATIVE TOTAL RETURN
among Allakos Inc., the NASDAQ Composite Index
and the NASDAQ Biotechnology Index

Allakos Inc.
NASDAQ Composite
NASDAQ Biotechnology

7/19/2018  

7/31/2018  

12/31/2018  
9/30/2018  
  $ 100.00     $ 130.46     $ 124.29     $ 143.97     $ 154.72     $ 188.51     $ 167.26  
85.24  
  103.06    
81.92  
  103.09    

  103.79    
  103.22    

  100.00    
  100.00    

93.62    
88.04    

98.05    
98.42    

94.08  
92.23  

11/30/2018  

10/31/2018  

8/31/2018  

70

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
Recent Sales of Unregistered Securities

During  the  year  ended  December  31,  2018,  we  granted  stock  options  to  purchase  an  aggregate  of  2,462,741  shares  of  common  stock  to  certain

employees under the 2012 Plan at exercise prices per share ranging from $4.01 to $16.00, for an aggregate exercise price of approximately $12.4 million.

During the year ended December 31, 2018, we issued and sold to our employees an aggregate of 526,686 shares of common stock upon the exercise

of options under our 2012 Plan at exercise prices per share ranging from $0.36 to $1.16, for an aggregate exercise price of approximately $0.3 million.

On  July  27,  2018,  we  issued  an  aggregate  of  46,893  shares  of  common  stock  (the  “Warrant  Shares”),  to  an  accredited  investor  upon  the  cashless
exercise of the investor’s then outstanding warrants to purchase an aggregate of 47,616 shares of common stock. The aggregate exercise price of the Warrant
Shares was approximately $29,000, representing a weighted-average exercise price per share of approximately $0.61.

The offers, sales and issuances of the securities described above were exempt from registration under the Securities Act under either (1) Rule 701 in
that the transactions were under compensatory benefit plans and contracts relating to compensation as provided under Rule 701 or (2) Section 4(a)(2) of the
Securities  Act  as  transactions  by  an  issuer  not  involving  any  public  offering.  The  recipients  of  such  securities,  other  than  the  Warrant  Shares,  were  our
employees, consultants or directors and they received the securities under our 2012 Plan. The recipient of the Warrant Shares is an accredited investor. The
recipients of securities in each of these transactions represented their intention to acquire the securities for investment only and not with view to or for sale in
connection with any distribution thereof and appropriate legends were affixed to the securities issued in these transactions.

Use of Proceeds from Registered Securities

On July 18, 2018, our Registration Statement on Form S-1 (File No. 333-225836) relating to the IPO of our common stock was declared effective by
the  SEC.  Pursuant  to  such  Registration  Statement,  we  sold  an  aggregate  of  8,203,332  shares  of  our  common  stock,  including  1,069,999  shares  sold
pursuant to the underwriters’ full exercise of their option to purchase additional shares, at a price of $18.00 per share. The aggregate offering price for shares
sold in the offering was $147.7 million. Goldman Sachs & Co. LLC and Jefferies LLC acted as joint book-running managers for the offering, and William
Blair & Company, L.L.C. acted as the lead manager for the offering. On July 23, 2018, we closed the sale of such shares, resulting in aggregate cash proceeds
to us of approximately $133.9 million, net of underwriting discounts, commissions and offering expenses paid or payable by us. No offering expenses were
paid or are payable, directly or indirectly, to our directors or officers, to persons owning 10% or more of any class of our equity securities or to any of our
affiliates.

There has been no material change in the expected use of the net proceeds from our IPO, as described in our final prospectus filed with the SEC on

July 19, 2018 pursuant to Rule 424(b) under the Securities Act, as amended.

Issuer Purchases of Equity Securities

Not applicable.

Item 6. Selected Financial Data.

The following tables summarize our selected financial data for the periods and as of the dates indicated. We have derived our selected statements of
operations and comprehensive loss data for the years ended December 31, 2018, 2017 and 2016, and the balance sheets data as of December 31, 2018, 2017
and 2016, from our audited financial statements and related notes included elsewhere in this Annual Report on Form 10-K.

Our historical results are not necessarily indicative of the results that may be expected in the future. You should read the financial and other data

below in conjunction with the section titled “Management’s Discussion and Analysis

71

 
of Financial Condition and Results of Operations” and our financial statements and related notes included elsewhere in this Annual Report on Form 10-K.

Statements of Operations Data:
Loss from operations
Net loss
Net loss per share, basic and diluted (1)
Weighted-average shares of common stock
   outstanding, basic and diluted (1)

2018

Year Ended December 31,
2017
(in thousands, except per share data)

2016

  $
  $
  $

(45,721)   $
(43,538)   $
(2.20)   $

(22,254)   $
(23,552)   $
(14.54)   $

(17,060)
(17,100)
(13.03)

19,833   

1,620   

1,312

(1)

See our statements of operations and comprehensive loss and Note 2 to our financial statements for further details on the calculation of net loss per
share, basic and diluted, attributable to common stockholders and the weighted-average number of shares used in the computation of the per share
amounts.

Balance Sheet Data:
Cash and cash equivalents and marketable securities
Working capital (1)
Total assets
Total liabilities
Convertible preferred stock
Accumulated deficit
Total stockholders’ equity (deficit)

2018

Year Ended December 31,
2017
(in thousands)

2016

  $

178,906    $
176,353   
191,259   
7,265   
—   
(104,112)  
183,994   

85,207    $
83,452   
87,029   
2,828   
142,969   
(60,574)  
(58,768)  

13,416 
11,031 
14,176 
7,616 
42,996 
(37,022)
(36,436)

(1)

We define working capital as current assets less current liabilities. See our financial statements included elsewhere in this Annual Report on Form 10-
K for further details regarding our current assets and current liabilities.

72

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

You should read the following discussion and analysis of our financial condition and results of operations together with our financial statements and
the other financial information appearing elsewhere in this Annual Report on Form 10-K. These statements generally relate to future events or to our future
financial  performance  and  involve  known  and  unknown  risks,  uncertainties  and  other  factors  which  may  cause  our  actual  results,  performance  or
achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. The
following discussion and analysis contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Our actual
results and the timing of events may differ materially from those discussed in our forward-looking statements as a result of various factors, including those
discussed  below  and  those  discussed  in  the  section  entitled  “Risk  Factors”  included  in  this  Annual  Report  on  Form  10-K.  If  we  do  update  one  or  more
forward-looking statements, no inference should be drawn that we will make additional updates with respect to those or other forward-looking statements.
Additional information concerning these and other risks and uncertainties is contained in our other periodic filings with the SEC.

Forward-looking statements include, but are not limited to, statements about:

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•

the impact that the adoption of new accounting pronouncements will have on our financial statements;

the ability of our clinical trials to demonstrate safety and efficacy of our product candidates, and other positive results;

the timing and focus of our future clinical trials, and the reporting of data from those trials;

our plans relating to commercializing AK002, if approved, including the geographic areas of focus and sales strategy;

the size of the market opportunity for AK002 in each of the diseases we are targeting;

the number of diseases represented in the patient population enrolled in our clinical trials, and our ability to evaluate response to treatment
of AK002 in diseases other than the primary indication in our clinical trials;

our estimates of the number of patients in the United States who suffer from the diseases we are targeting and the number of patients that will
enroll in our clinical trials;

the beneficial characteristics, safety, efficacy and therapeutic effects of AK002;

the  timing  or  likelihood  of  regulatory  filings  and  approvals,  including  our  expectation  to  seek  special  designations,  such  as  orphan  drug
designation, for AK002 or our other product candidates for various diseases;

our ability to obtain and maintain regulatory approval of AK002 or our other product candidates;

our plans relating to the further development of AK002 and our other product candidates;

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

our plans and ability to obtain or protect intellectual property rights, including extensions of existing patent terms where available;

our  continued  reliance  on  third-parties  to  conduct  additional  clinical  trials  of  AK002  and  our  other  product  candidates,  and  for  the
manufacture of our product candidates for preclinical studies and clinical trials;

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

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

our financial performance;

the sufficiency of our existing cash, cash equivalents and marketable securities to fund our future operating expenses and capital expenditure
requirements;

73

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
•

•

our expectations regarding the period during which we will qualify as an emerging growth company under the JOBS Act; and

our anticipated use of the proceeds from our initial public offering and the concurrent private placement.

These forward-looking statements are subject to a number of risks, uncertainties, and assumptions, including, but not limited to, those described in
“Risk  Factors.”  In  some  cases,  you  can  identify  these  statements  by  terms  such  as  “anticipate,”  “believe,”  “could,”  “estimate,”  “expects,”  “intend,”
“may,” “plan,” “potential,” “predict,” “project,” “should,” “will,” “would” or the negative of those terms, and similar expressions that convey uncertainty
of future events or outcomes. These forward-looking statements reflect our beliefs and views with respect to future events and are based on estimates and
assumptions as of the date of this Annual Report on Form 10-K and are subject to risks and uncertainties. We discuss many of these risks in greater detail in
the section entitled “Risk Factors” included in Part I, Item 1A and elsewhere in this Report. Moreover, we operate in a very competitive and rapidly changing
environment. New risks emerge from time to time. It is not possible to predict all risks, nor can we assess the impact of all factors on our business or the
extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we
may  make.  Given  these  uncertainties,  you  should  not  place  undue  reliance  on  these  forward-looking  statements.  We  qualify  all  of  the  forward-looking
statements in this Annual Report on Form 10-K by these cautionary statements. Except as required by law, we assume no obligation to update these forward-
looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in any forward-looking statements, whether
as a result of new information, future events or otherwise.

Overview

We are a clinical stage biotechnology company developing AK002, our wholly owned monoclonal antibody, for the treatment of various eosinophil
and mast cell related diseases. AK002 selectively targets both eosinophils and mast cells, white blood cells that are widely distributed in the body and play a
central  role  in  the  inflammatory  response.  Inappropriately  activated  eosinophils  and  mast  cells  have  been  identified  as  key  drivers  in  a  number  of  severe
diseases affecting the gastrointestinal tract, eyes, skin, lungs and other organs. As such, AK002 has the potential to treat a large number of severe diseases.
AK002 has demonstrated activity in clinical trials. In these trails, AK002 depleted blood eosinophils and improved symptoms in patients with three forms of
chronic urticaria (“CU”) and indolent systemic mastocytosis (“ISM”), all mast cell driven diseases. The activity observed in ISM and CU suggest that AK002
could provide significant benefit to patients suffering from these diseases and highlight AK002’s potential to broadly inhibit mast cells in different disease
settings.  We  are  developing  AK002  for  the  treatment  of  eosinophilic  gastritis  (“EG”),  eosinophilic  gastroenteritis  (“EGE”),  and  eosinophilic  esophagitis
(“EoE”).  In  addition,  we  have  or  are  currently  conducting  studies  in  ISM,  CU,  and  severe  allergic  conjunctivitis  (“SAC”)  and  are  evaluating  additional
indications for future development.

Despite the knowledge that eosinophils and mast cells drive many pathological conditions, there are no approved therapies that selectively target both
eosinophils and mast cells. AK002 binds to Siglec-8, an inhibitory receptor found on eosinophils and mast cells, which represents a novel way to selectively
deplete  or  inhibit  these  important  immune  cells  and  thereby  resolve  inflammation.  We  believe  AK002  is  the  only  Siglec-8  targeting  antibody  currently  in
clinical development and has the potential to have advantages over current treatments for the diseases we are pursuing.

Since  our  inception  in  2012,  we  have  devoted  substantially  all  of  our  resources  and  efforts  towards  the  research  and  development  of  our  product
candidates. We initially began developing two product candidates, AK001 and AK002, both of which are monoclonal antibodies targeting Siglec-8. These
compounds  entered  clinical  trials  in  2015  and  2016,  respectively.  Due  to  the  greater  activity  of  AK002,  we  decided  to  focus  our  development  efforts  on
AK002 and discontinued the development of AK001 in 2017. We have no current plans to continue development of AK001 at this time but may choose to do
so  in  the  future.  In  addition  to  activities  conducted  internally  at  our  facilities,  we  have  utilized  significant  financial  resources  to  engage  contractors,
consultants and other third-parties to conduct various preclinical and clinical development activities on our behalf.

To  date,  we  have  not  had  any  products  approved  for  sale  and  have  not  generated  any  revenue  nor  been  profitable.  Further,  we  do  not  expect  to
generate revenue from product sales until such time, if ever, that we are able to successfully complete the development and obtain marketing approval for one
of our product candidates. We will

74

 
 
 
continue to require additional capital to develop our product candidates and fund operations for the foreseeable future. We have incurred significant operating
losses to date and expect to incur significant operating losses for the foreseeable future. Our net losses were $43.5 million, $23.6 million and $17.1 million for
the years ended December 31, 2018, 2017 and 2016, respectively. As of December 31, 2018, we had an accumulated deficit of $104.1 million.

Our operations have been financed primarily through the private placements of convertible debt instruments and convertible preferred stock. These
private placements provided gross proceeds of $146.9 million. As of December 31, 2018, we had cash, cash equivalents and marketable securities of $178.9
million, which we believe will be sufficient to fund our planned operations for at least the next 12 months from the issuance of our financial statements.

Initial Public Offering

On July 23, 2018, we completed an initial public offering (“IPO”), selling 8,203,332 shares of common stock at $18.00 per share. Proceeds from our
IPO, net of underwriting discounts and commissions, were $137.3 million. Concurrently with our IPO, we completed a private placement of 250,000 shares
of common stock at $18.00 per share to an existing stockholder. Proceeds from this private placement were $4.5 million.

In connection with the completion of our IPO on July 23, 2018, all then outstanding shares of convertible preferred stock converted into 30,971,627

shares of common stock.

Components of Operating Results

Revenue

We have not generated any revenue from product sales or otherwise, and do not expect to generate any revenue for at least the next several years.

Operating Expenses

We classify operating expenses into two categories: (i) research and development and (ii) general and administrative.

Research and Development Expenses

Research and development expenses represent the following costs incurred by us for the discovery, development and manufacturing of our product

candidates:

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•

•

•

•

•

consultant and personnel-related costs including salaries, benefits, travel and stock-based compensation expense;

costs  incurred  under  service  agreements  with  contract  research  organizations  (“CROs”)  that  conduct  nonclinical  and  clinical  research
activities on our behalf;

costs incurred under service agreements with contract development and manufacturing organizations (“CDMOs”) for the manufacture and fill
finish of our preclinical and clinical materials;

costs related to in-house research and development activities conducted at our facilities including laboratory supplies, non-capital laboratory
equipment and depreciation of capital laboratory equipment and leasehold improvements to laboratories;

costs incurred under exclusive and non-exclusive license agreements with third-parties; and

allocated  facility  and  other  costs  including  the  rent  and  maintenance  of  our  facilities,  insurance  premiums,  depreciation  of  shared-use
leasehold improvements and general office supplies.

We expense research and development costs as incurred. We recognize costs for certain development activities, such as clinical trials, based on an
evaluation of the progress to completion of specific tasks using data such as clinical site activations, patient enrollment or information provided to us by our
vendors and our clinical investigative sites,

75

 
 
 
 
 
 
 
along with analysis by our in-house clinical operations personnel. Advance payments for goods or services to be received in the future for use in research and
development activities are deferred and capitalized as prepaid expenses, even when there is no alternative future use for the research and development. The
capitalized amounts are expensed as the related goods are delivered or the services are performed.

The successful development of our product candidates is highly uncertain. Accordingly, it is difficult to estimate the nature, timing and extent of costs
necessary to complete the remainder of the development of our product candidates. We are also unable to predict when, if ever, we will be able to generate
revenue  from  our  product  candidates.  This  is  due  to  the  numerous  risks  and  uncertainties  associated  with  developing  drugs,  including  the  uncertainty
surrounding:

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demonstrating sufficient safety and tolerability profiles of product candidates;

successful enrollment and completion of clinical trials;

requisite clearance and approvals from applicable regulatory authorities;

establishing and maintaining commercial manufacturing capabilities with CDMOs;

obtaining and maintaining protection of intellectual property; and

commercializing product candidates, if and when approved, alone or in collaboration with third-parties.

A change pertaining to any of these variables would significantly impact the timing and extent of costs incurred with respect to the development and

commercialization of our product candidates.

External costs incurred from third-party CROs and CDMOs have comprised a significant portion of our research and development expenses since
inception.  We  track  external  CRO  and  CDMO  costs  on  a  program-by-program  basis  following  the  advancement  of  a  product  candidate  into  clinical
development. To date, we have advanced two product candidates, AK001 and AK002, into clinical development, although we discontinued the development
of AK001 in 2017. Residual costs related to AK001 incurred after discontinuation in 2017 are primarily related to the winding down of historically contracted
research  and  development  activities  and  as  such,  we  do  not  anticipate  incurring  significant  expenses  related  to  AK001  development  in  future  periods.
Consulting  and  personnel-related  costs,  laboratory  supplies  and  non-capital  equipment  utilized  in  the  conduct  of  in-house  research,  in-licensing  fees  and
general overhead, are not tracked on a program-by-program basis, nor are they allocated, as they commonly benefit projects in our pipeline or span multiple
programs.

The following table summarizes our research and development expenses for the periods indicated (in thousands):

AK002 contract research and development
AK001 contract research and development
Consulting and personnel-related costs
Other unallocated research and development costs

Total

General and Administrative Expenses

2018

Year Ended December 31,
2017

2016

  $

  $

12,990    $
929   
14,144   
5,224   
33,287    $

5,133    $
3,820   
6,033   
3,520   
18,506    $

2,989 
5,460 
3,452 
2,771 
14,672

General  and  administrative  expenses  consist  of  fees  paid  to  consultants,  salaries,  benefits  and  other  personnel-related  costs,  including  stock-based
compensation, for our personnel in executive, finance, accounting and other administrative functions, legal costs, fees paid for accounting and tax services
and facility costs not otherwise included in research and development expenses. Legal costs include general corporate and patent legal fees and related costs.

We anticipate that our general and administrative expenses will increase in the future to support our continued research and development activities
including  costs  related  to  personnel,  outside  consultants,  attorneys  and  accountants,  among  others.  Additionally,  we  expect  to  incur  incremental  costs
associated with operating as a public

76

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
company,  including  expenses  related  to  maintaining  compliance  with  the  rules  and  regulations  of  the  Securities  and  Exchange  Commission  (“SEC”),  and
those of any national securities exchange on which our securities are traded, additional insurance premiums, investor relations activities and other ancillary
administrative and professional services.

Interest Income (Expense), Net

Interest  income  (expense),  net,  primarily  consists  of  stated  interest  on  outstanding  principal  amounts  drawn  under  our  historical  debt  facility  with
SVB, amortization of debt discounts and beneficial conversion feature associated with convertible notes payable to related parties and the amortization and
accretion  of  debt  discounts  and  deferred  issuance  costs  associated  with  amounts  drawn  under  our  historical  debt  facility  with  SVB.  Also  included  within
interest  income  (expense),  net,  is  interest  and  investment  income  earned  on  our  cash,  cash  equivalents  and  marketable  securities  included  on  the  balance
sheets.

Other Income (Expense), Net

Other income (expense), net, primarily consists of charges related to the extinguishment of our historical debt facility with SVB, as well as amounts

realized from gains and losses related to fluctuations in foreign currencies.

In-Licensing Agreements

We have entered into a number of exclusive and nonexclusive, royalty bearing license agreements with third-parties for certain intellectual property.
Under the terms of the license agreements described below, we are obligated to pay milestone payments upon the achievement of specified clinical, regulatory
and commercial milestones. Actual amounts due under the license agreements vary depending on factors including, but not limited to, the number of product
candidates we develop and our ability to successfully develop and commercialize our product candidates covered under the respective agreements. In addition
to  milestone  payments,  we  are  also  subject  to  future  royalty  payments  based  on  sales  of  our  product  candidates  covered  under  the  agreements,  as  well  as
certain minimum annual royalty and commercial reservation fees. Because the achievement of milestones and the timing and extent of future royalties is not
fixed  and  determinable,  these  contingent  amounts  have  not  been  included  on  our  balance  sheets  or  as  part  of  Contractual  Obligations  and  Commitments
discussion below.

We recognized $0.3 million of milestone expense for the year ended December 31, 2018 and did not recognize any milestone expense during the year
ended December 31, 2017. Milestone payments are not creditable against royalties. As of December 31, 2018, we have not incurred any royalty liabilities
related to our license agreements, as product sales have not yet commenced.

Exclusive License Agreement with The Johns Hopkins University

In December 2013, we entered into a license agreement with The Johns Hopkins University, (“JHU”) for a worldwide exclusive license to develop,
use, manufacture and commercialize covered product candidates including AK001 and AK002, which was amended in September 30, 2016. Under the terms
of the agreement, we have made upfront and milestone payments of $0.3 million through December 31, 2018 and we may be required to make aggregate
additional milestone payments of up to $4.0 million. We also issued 88,887 shares of common stock as consideration under the JHU license agreement. In
addition to milestone payments, we are also subject to single-digit royalties to JHU based on future net sales of each licensed therapeutic product candidate by
us and our affiliates and sublicensees, with up to a low six-digit dollar minimum annual royalty payment.

Non-exclusive License Agreement with BioWa Inc. and Lonza Sales AG

In October 2013, we entered into a tripartite agreement with BioWa Inc. (“BioWa”), and Lonza Sales AG (“Lonza”), for the non-exclusive worldwide
license to develop and commercialize product candidates including AK002 that are manufactured using a technology jointly developed and owned by BioWa
and Lonza. Under the terms of the agreement, we have made milestone payments of $0.4 million through December 31, 2018 and we may be required to
make aggregate additional milestone payments of up to $41.0 million. In addition to milestone payments, we are also subject to minimum annual commercial
license fees of $40,000 per year to BioWa until such time as

77

 
BioWa receives royalty payments, as well as low single-digit royalties to BioWa and to Lonza. Royalties are based on future net sales by us and our affiliates
and sublicensees and vary dependent on Lonza’s participation as sole manufacturer for commercial production.

Critical Accounting Policies and Use of Estimates

Our management’s discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been
prepared  in  accordance  with  generally  accepted  accounting  principles  in  the  United  States  (“U.S.  GAAP”).  The  preparation  of  our  financial  statements
requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at
the  date  of  the  financial  statements,  as  well  as  the  reported  expenses  incurred  during  the  reporting  periods.  Our  estimates  are  based  on  our  historical
experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments
about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different
assumptions or conditions.

We believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to

the more significant areas involving management’s judgments and estimates.

Research and Development Expenses

As part of the process of preparing our financial statements, we estimate our accrued research and development expenses at each balance sheet date.
This process involves reviewing purchase orders and open contracts, communicating with our personnel to identify services that have been performed on our
behalf  and  estimating  the  level  of  service  performed  and  the  associated  costs  incurred  for  the  services  when  we  have  not  yet  been  invoiced  or  otherwise
notified of the actual cost. The majority of our service providers invoice us monthly in arrears for services performed or when contractual milestones are met;
however, some require advance payments. We make estimates of our accrued expenses as of each balance sheet date in our financial statements based on facts
and  circumstances  known  to  us  at  that  time.  We  periodically  confirm  the  accuracy  of  our  estimates  with  the  service  providers  and  make  adjustments  as
necessary.  The  significant  estimates  in  our  accrued  research  and  development  expenses  include  the  costs  incurred  for  services  performed  by  CROs  and
CDMOs in connection with research and development activities for which we have not yet been invoiced.

We base our expenses related to research and development activities on our estimates of the services received and efforts expended pursuant to quotes
and contracts with vendors that conduct research and development on our behalf. The financial terms of these agreements are subject to negotiation, vary
from contract to contract and may result in uneven payment flows. There may be instances in which payments made to our vendors will exceed the level of
services  provided  and  result  in  a  prepayment  of  the  research  and  development  expense.  In  accruing  service  fees,  we  estimate  the  time  period  over  which
services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies
from our estimate, we adjust the accrual or prepaid accordingly. Non-refundable advance payments for goods and services that will be used in future research
and development activities are expensed when the activity has been performed or when the goods have been received rather than when the payment is made.

Although we do not expect our estimates to be materially different from amounts incurred, our understanding of the status and timing of services
performed relative to the actual status and timing of services performed may vary and may result in us reporting amounts that are too high or too low in any
period. To date, there have been no material differences between our estimates of such expenses and the amounts incurred.

Stock-Based Compensation

We account for stock-based compensation expense resulting from stock-based awards granted to employees and directors in accordance with ASC
718, Compensation—Stock Compensation, (“ASC 718”). Per ASC 718, we measure the fair value of stock-based awards on the date of grant and recognize
the associated compensation expense, net of impact from estimated forfeitures, over the requisite service period on a straight-line basis. The vesting period of
the  stock-based  award  has  historically  served  as  the  requisite  service  period  for  the  respective  grants  to  our  employees  and  directors.  At  each  subsequent
reporting date, we are required to evaluate whether the achievement of any

78

 
associated vesting conditions is probable and whether or not any such events have occurred that would have resulted in the acceleration of vesting.

Determining the amount of stock-based compensation expense to be recorded requires us to develop estimates of the fair value of stock options as of
the  date  of  grant.  We  estimate  the  fair  value  of  each  stock-based  award  using  the  Black-Scholes  option-pricing  model.  The  Black-Scholes  option-pricing
model uses highly subjective inputs such as the fair value of our common stock, as well as other assumptions including the expected volatility of our common
stock, the expected term of the respective stock-based award, the risk-free interest rate for a period that approximates the expected term of the stock-based
award being valued and the expected dividend yield on our common stock over the expected term.

Expected volatility. As we do not have sufficient trading history for our common stock, we have based our computation of expected volatility on the
historical volatility of a representative group of public life science companies with similar characteristics to us, including company age and stage of
product development. The historical volatility data is calculated based on a period of time commensurate with the expected term of the stock-based
award being valued. We will continue to utilize this approach until a sufficient amount of historical information regarding the volatility of our own
stock  price  becomes  available  or  until  other  relevant  circumstances  change,  such  as  our  assessment  that  our  identified  entities  are  no  longer
appropriate  to  use  as  representative  companies.  In  the  latter  case,  more  suitable,  similar  entities  with  publicly  available  stock  prices  will  be
incorporated in the calculation.

Expected term. In order to estimate the expected term of a stock-based award, we use the simplified method prescribed by SEC Staff Accounting
Bulletin No. 107, Share-Based Payment, as we do not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the
expected  term.  Under  this  approach,  the  expected  term  is  presumed  to  be  the  average  of  the  contractual  term  (ten  years)  and  the  vesting  term
(generally four years) of the stock-based award. We have not historically experienced, nor do we expect there to be substantially different exercise or
post-vesting termination behavior among our employees and directors.

Risk-free interest rate. The risk-free interest rate is based on publicly available yields of U.S. Treasury instruments with maturities consistent with the
expected term of the stock-based award.

Expected dividend yield. The expected dividend yield is assumed to be zero as we have never paid dividends and have no current plans to pay any
dividends on our common stock.

Determination of Fair Value of Common Stock on Grant Dates prior to our IPO

The estimated fair value of the common stock underlying our stock options was determined at each grant date by our board of directors, with input
from management. All options to purchase shares of our common stock are intended to be exercisable at a price per share not less than the per-share fair value
of our common stock underlying those options on the date of grant. As a private company with no active public market for our common stock, our board of
directors has periodically determined the estimated per-share fair value of our common stock considering, among other things, contemporaneous valuations
performed  by  independent  valuation  specialists  in  accordance  with  the  guidance  outlined  in  the  American  Institute  of  Certified  Public  Accountants’
Accounting and Valuation Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation, (the “Practice Aid”).

The Practice Aid identifies various available methods for allocating enterprise value across classes and series of capital stock in order to determine
the estimated fair value of common stock at each valuation date. In accordance with the Practice Aid, our board of directors considered a number of available
methods including those described below. Each of these methods requires the use of significant judgments including making assumptions regarding our future
operating performance, as well as the timing and probability of future financing and liquidity events. The relative probabilities and timing surrounding each
future event were determined based on an analysis of our prospects and market conditions at the time. The enterprise valuations utilized in each method were
historically determined using either the guideline public company method, the similar transaction method or backsolved using a contemporaneous transaction
of  our  convertible  preferred  stock.  For  valuations  derived  using  the  guideline  public  company  method  and  similar  transaction  method,  we  focused  on  life
science companies at similar stages of development that recently completed initial public offerings or had recently consummated a liquidation event.

79

 
Resulting  valuations  associated  with  these  future  scenarios  were  discounted  back  to  the  valuation  date  using  an  appropriate  risk-adjusted  discount  rate.
Finally,  we  applied  discounts  for  lack  of  marketability  to  our  common  stock  to  account  for  the  lack  of  access  to  an  active  public  market.  If  different
methodologies or assumptions were used, our stock-based compensation expense, net loss and net loss per share applicable to common stockholders could
have been significantly different.

Option-Pricing Method. The option-pricing method (“OPM”), treats the various classes of capital stock as call options on the total equity value of a
company,  with  exercise  prices  determined  using  thresholds  for  each  equity  value  that  results  in  a  change  in  the  allocation  to  each  class  of  capital
stock. Accordingly, common stock only has value if the funds available for distribution to stockholders exceeds all current and future preferred stock
liquidation preferences modeled at the time of a liquidity event, such as a strategic sale, merger or disposition of the Company. In order to calculate
the fair value of the various call options, the OPM incorporates the Black-Scholes option-pricing model. The Black-Scholes option-pricing model
requires management to make additional assumptions such as the expected volatility of the underlying equity securities. Expected volatility utilized in
our valuation models was based on the historical trading volatility of our publicly traded peer companies, which we assess for reasonableness and
update on a continuous basis as necessary.

Probability-Weighted  Expected  Return  Method.  The  probability-weighted  expected  return  method  (“PWERM”),  is  a  scenario-based  analysis  that
estimates value per share based upon an analysis of future values for the company, assuming various outcomes. The common stock value is based on
the probability-weighted present value of expected future investment returns considering each of the possible outcomes available as well as the rights
of each class of stock. The future value of the common stock under each outcome is discounted back to the valuation date at an appropriate risk-
adjusted discount rate and probability weighted to arrive at an indication of value for the common stock.

Hybrid Method. The Hybrid Method is a blended approach using aspects of both the PWERM and OPM, in which the equity value in one of the
scenarios  is  calculated  using  an  OPM.  In  the  hybrid  method  used  by  us,  two  types  of  future-event  scenarios  were  considered:  an  IPO  and  an
unspecified liquidity event.

Based  on  our  early  stage  of  development  and  other  relevant  factors,  we  determined  that  an  OPM  was  the  most  appropriate  method  for  allocating
enterprise value for our November 2015 common stock valuation. For the common stock valuation that we performed in December 2016, we determined the
PWERM to be the most appropriate as we were within twelve to eighteen months from a potential IPO. We determined the Hybrid Method to be the most
appropriate  for  subsequent  valuations  performed  in  August  2017,  December  2017  and  March  2018,  as  our  expectations  around  the  timing  and  form  of
liquidity became better understood.

The dates of our contemporaneous valuations have not always coincided with the dates of our stock option grants. In determining the exercise prices
of  the  stock  options,  our  board  of  directors  considered,  among  other  things,  the  most  recent  contemporaneous  valuations  of  our  common  stock  and  our
assessment of additional objective and subjective factors we believed were relevant as of the grant date. The additional factors considered when determining
any  changes  in  fair  value  between  the  most  recent  contemporaneous  valuation  and  the  grant  dates  included  our  stage  of  research  and  development,  our
operating and financial performance and current business conditions.

Determination of the fair value of our common stock on grant dates following our IPO

The fair value of each share of common stock underlying our stock-based awards is based on the closing price of our common stock as reported by

the NASDAQ Global Select Market on the date of grant.

Income Taxes

We account for income taxes under the asset and liability method. Current income tax expense or benefit represents the amount of income taxes we
expect  to  pay  or  have  refunded  in  the  current  year.  Our  deferred  income  tax  assets  and  liabilities  are  determined  based  on  differences  between  financial
statement reporting and tax basis accounting of assets and liabilities and net operating loss and credit carryforwards, which we measure using the enacted tax
rates and laws that will be in effect when such items are expected to reverse. We reduce deferred income tax assets, as necessary, by applying a valuation
allowance to the extent that we determined it is more likely than not that some or all of our tax benefits will not be realized.

80

 
We account for uncertain tax positions in accordance with ASC 740-10, Accounting for Uncertainty in Income Taxes. We assess all material positions
reflected in our income tax returns, including all significant uncertain positions, for all tax years that are subject to assessment or challenge by relevant taxing
authorities. Upon determining the sustainability of our positions, we measure the largest amount of benefit possessing greater than fifty percent likelihood of
being realized upon ultimate settlement. We reassess such positions at each balance sheet date to determine whether any factors underlying the sustainability
assertion have changed and whether or not the amount of the recognized tax benefit is still appropriate.

As of December 31, 2018, our gross deferred tax assets were $28.9 million. Due to our lack of earnings history and uncertainties surrounding our
ability  to  generate  future  taxable  income,  we  have  offset  the  total  net  deferred  tax  assets  with  a  full  valuation  allowance.  The  deferred  tax  assets  were
primarily  comprised  of  federal  and  state  tax  net  operating  losses,  (“NOLs”),  which  may  be  limited  by  certain  rules  governing  changes  in  ownership,  as
defined in Section 382 of the Internal Revenue Code of 1986, as amended. Similar rules may apply under state tax laws. Our ability to use our remaining
NOLs may be further limited if we experience future ownership changes.

The recognition and measurement of tax benefits requires significant judgment, especially in assessing uncertain tax positions. Judgments concerning
the  recognition  and  measurement  of  our  tax  benefits,  as  well  as  limitations  surrounding  their  realizability,  might  change  as  new  information  becomes
available.

Recent Accounting Pronouncements

See Note 2 to our financial statements for recently issued accounting pronouncements, including the respective effective dates of adoption and effects

on our results of operations and financial condition.

JOBS Act

In  April  2012,  the  Jumpstart  Our  Business  Startups  Act  of  2012  (the  “JOBS  Act”),  was  enacted.  Section  107  of  the  JOBS  Act  provides  that  an
emerging growth company (“EGC”), can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act, for complying
with new or revised accounting standards. Thus, an EGC can delay the adoption of certain accounting standards until those standards would otherwise apply
to  private  companies.  We  have  irrevocably  elected  not  to  avail  ourselves  of  this  extended  transition  period  and,  as  a  result,  we  will  adopt  new  or  revised
accounting standards on the relevant dates on which adoption of such standards is required for other public companies. 

We will remain an emerging growth company until the earliest of (i) the last day of our first fiscal year in which we have total annual gross revenues
of $1.07 billion or more, (ii) the date on which we are deemed to be a “large accelerated filer” under the rules of the SEC with at least $700.0 million of
outstanding equity securities held by non-affiliates, (iii) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the
previous three years or (iv) the last day of our fiscal year following the fifth anniversary of the date of the completion of our IPO .

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Results of Operations

Comparison of the Years Ended December 31, 2018, 2017 and 2016

The following table summarizes our results of operations for the periods indicated (in thousands):

Operating expenses

Research and development
General and administrative
Total operating expenses

Loss from operations
Interest income (expense), net
Other income (expense), net
Loss before benefit from income taxes
Benefit from income taxes
Net loss
Unrealized loss on marketable securities, net of tax
Comprehensive loss

Research and Development Expenses

2018

Year Ended December 31,
2017

2016

  $

  $

33,287    $
12,434   
45,721   
(45,721)  
2,375   
(192)  
(43,538)  
—   
(43,538)  
(15)  
(43,553)   $

 $

18,506 
3,748 
22,254   
(22,254)  
(1,302)  
(287)  
(23,843)  
(291)  
(23,552)  
—   
(23,552)   $

14,672 
2,388 
17,060 
(17,060)
(51)
11 
(17,100)
— 
(17,100)
— 
(17,100)

Research  and  development  expenses  were  $33.3  million  for  the  year  ended  December  31,  2018  compared  to  $18.5  million  for  the  year  ended
December  31,  2017,  an  increase  of  $14.8  million.  The  increase  in  research  and  development  expenses  was  attributable  to  an  additional  $8.1  million  in
consulting and personnel-related costs resulting primarily from our increased employee headcount, $7.9 million of incremental AK002 contract research and
development costs attributable to the expansion of our clinical development efforts including our Phase 2 trials in patients with EG and CU and our Phase 1
trial in patients with SAC, and an increase of $1.7 million in other unallocated research and development costs primarily related to the conduct of in-house
research, including activities supporting the continued development of antibodies in our pipeline. The increases were partially offset by a period-over-period
decrease of $2.9 million in AK001 contract research and development costs as a result of our discontinuation of AK001 development efforts during the year
ended December 31, 2017. Residual costs incurred during the year ended December 31, 2018 were related to the winding down of historically contracted
research and development activities.

Research  and  development  expenses  were  $18.5  million  for  the  year  ended  December  31,  2017  compared  to  $14.7  million  for  the  year  ended
December 31, 2016, an increase of $3.8 million. The increase in research and development expenses was primarily attributable to an additional $2.6 million
in consulting and personnel-related costs resulting primarily from our increased employee headcount, as well as $2.1 million of incremental AK002 contract
research and development costs, primarily attributable to the production of clinical material during the year ended December 31, 2017. Further increases of
$0.7 million in other unallocated research and development costs were primarily related to the conduct of in-house research, including activities supporting
the continued development of antibodies in our pipeline Increases were offset by a year-over-year decrease of $1.6 million in AK001 contract research and
development costs as a result of our discontinuation of AK001 development efforts during the year ended December 31, 2017.

General and Administrative Expenses

General  and  administrative  expenses  were  $12.4  million  for  the  year  ended  December  31,  2018  compared  to  $3.7  million  for  the  year  ended
December 31, 2017, an increase of $8.7 million. The increase in general and administrative expenses was primarily attributable to an additional $6.6 million
in personnel-related costs as a result of our increase in employee headcount, as well as $0.8 million of incremental expense incurred from outside professional
service  providers  for  legal,  information  technology,  and  investor  relations  activities  associated  with  becoming  a  publicly  traded  company  in  July
2018. Additionally, we incurred incremental facilities and other

82

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
   
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
administrative costs of $1.3 million, such as general business insurance premiums, not otherwise included in research and development expenses.

General and administrative expenses were $3.7 million for the year ended December 31, 2017 compared to $2.4 million for the year ended December
31,  2016,  an  increase  of  $1.3  million.  The  increase  in  general  and  administrative  expenses  was  primarily  attributable  to  an  additional  $1.1  million  in
personnel-related costs as a result of our increase in employee headcount, as well as an additional $0.2 million in other allocated costs.

Interest Income (Expense), Net

Interest income (expense), net, was $2.4 million for the year ended December 31, 2018 compared to $(1.3) million for the year ended December 31,
2017. The period-over-period change of $3.7 million was attributable to increased interest income of $2.4 million earned on capital raised by our Series B
preferred stock financing and IPO in November 2017 and July 2018, respectively, along with decreased interest expense of $1.3 million resulting from the
repayment and termination of our historical debt facility and conversion of our convertible promissory notes payable to related parties during the year ended
December 31, 2017.

Interest income (expense), net was $(1.3) million for the year ended December 31, 2017 compared to $(0.1) million for the year ended December 31,
2016.  The  period-over-period  change  of  $1.2  million  was  primarily  attributable  to  increased  interest  expense  of  $1.1  million  associated  with  convertible
promissory notes payable to related parties that were outstanding during the year ended December 31, 2017, as well as additional interest expense of $0.2
million associated with our debt facility with SVB.

Other Income (Expense), Net

There were no significant period-over-period changes in other income (expense), net, for the years ended December 31, 2018 and 2017.

Provision for (Benefit from) Income Taxes

There was no benefit from income taxes during the year ended December 31, 2018.

Benefit from income taxes was $0.3 million for the year ended December 31, 2017, which was solely attributable to the intra-period tax accounting
effect  related  to  the  beneficial  conversion  feature  associated  with  our  convertible  promissory  notes  payable  to  related  parties.  See  Note  7  to  our  financial
statements. We did not record a benefit from income taxes for the year ended December 31, 2016.

Liquidity and Capital Resources

Sources of Liquidity

We are a clinical stage biotechnology company with a limited operating history. As a result of our significant research and development expenditures,
we  have  generated  net  losses  since  our  inception.  Prior  to  completing  our  IPO,  we  historically  financed  our  operations  primarily  through  the  private
placement of convertible preferred stock. These private placements provided gross proceeds of $146.9 million. We also had a debt facility with SVB, for an
aggregate of $5.0 million, which was fully repaid and terminated during 2017.

On July 23, 2018, we completed our IPO, selling 8,203,332 shares of common stock at a price of $18.00 per share. Proceeds from the initial public
offering,  net  of  underwriting  discounts  and  commissions,  were  $137.3  million.  Concurrently  with  our  IPO,  we  completed  a  private  placement  of  250,000
shares of common stock at $18.00 per share to an existing stockholder. Proceeds from this private placement were $4.5 million.

As of December 31, 2018, we had cash, cash equivalents and marketable securities of $178.9 million.

Based  on  our  existing  business  plan,  we  believe  that  our  current  cash,  cash  equivalents  and  marketable  securities  will  be  sufficient  to  fund  our

anticipated level of operations through at least the next 12 months from the issuance of our financial statements.

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Summary Cash Flows

Comparison of the Years Ended December 31, 2018, 2017 and 2016

The  following  table  summarizes  the  primary  sources  and  uses  of  our  cash,  cash  equivalents,  and  restricted  cash  for  the  periods  indicated  (in

thousands):

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

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

Cash Used in Operating Activities

Year Ended December 31,

2018

2017

  $

(38,450)       $

(151,047)  
138,752   

(22,568)       $
(264)  
94,623   

2016

(17,578)
(234)
24,012 

  $

(50,745)       $

71,791        $

6,200

Net cash used in operating activities was $38.5 million for the year ended December 31, 2018, which was primarily attributable to our net loss of
$43.5 million adjusted for net noncash charges of $3.4 million and net changes in operating assets and liabilities of $1.6 million. Noncash charges included
$4.6  million  in  stock-based  compensation  expense  and  $0.2  million  in  depreciation  and  amortization  expense,  partially  offset  by  $1.3  million  in  net
amortization of premiums and discounts on marketable securities and $0.1 million accretion of tenant improvement allowances.

Net cash used in operating activities was $22.6 million for the year ended December 31, 2017, which was primarily attributable to our net loss of
$23.6 million. Cash used in operating activities included a net decrease of $0.7 million in operating assets and liabilities, offset by non-cash charges related to
the  amortization  of  the  beneficial  conversion  feature  associated  with  convertible  promissory  notes  payable  to  related  parties  of  $0.9  million,  stock-based
compensation of $0.4 million, depreciation and amortization of $0.2 million, stated interest on convertible promissory notes payable to related parties of $0.2
million and our loss on extinguishment of debt of $0.2 million.

Net cash used in operating activities was $17.6 million for the year ended December 31, 2016, which was primarily attributable to our net loss of
$17.1 million. Cash used in operating activities included a net decrease of $0.8 million in operating assets and liabilities, offset by non-cash charges related to
stock-based compensation of $0.2 million and depreciation and amortization of $0.1 million.

Cash Used in Investing Activities

Net cash used in investing activities was $151.0 million for the year ended December 31, 2018, which consisted of $236.6 million for the purchases
of marketable securities and $6.9 million for the purchases of property and equipment, partially offset by $92.5 million for maturities of marketable securities.

Net cash used in investing activities was $0.3 million for the year ended December 31, 2017, which was entirely attributable to purchases of property

and equipment.

Net cash used in investing activities was $0.2 million for the year ended December 31, 2016, which was entirely attributable to purchase of property

and equipment.

Cash Provided by Financing Activities

Net cash provided by financing activities was $138.8 million for the year ended December 31, 2018, which consisted primarily of $138.4 million in
proceeds from the issuance of common stock, $0.3 million in proceeds received from employees for the exercise of stock options and $0.1 million in proceeds
from the repayment of recourse promissory notes.

Net cash provided by financing activities was $94.6 million for the year ended December 31,2017, which was primarily the result of $92.3 million of
net  proceeds  received  from  private  placements  of  our  convertible  preferred  stock,  as  well  as  $7.4  million  of  net  proceeds  received  from  the  issuance  of
convertible promissory notes payable to

84

 
 
 
 
 
 
 
 
 
   
 
 
   
 
 
 
    
    
 
 
    
    
 
 
related  parties  and  $0.2  million  of  net  proceeds  from  the  exercise  of  employee  stock  options.  Cash  used  in  financing  activities included  $5.3  million  of
repayments of historical debt facility with SVB.

Net cash provided by financing activities was $24.0 million for the year ended December 31,2016, which was primarily the result of $19.0 million of
net proceeds received from private placements of our convertible preferred stocks as well as $5.0 million of borrowings drawn as part of our historical debt
facility with SVB.

Funding Requirements

We will continue to require additional capital to develop our product candidates and fund operations for the foreseeable future. We may seek to raise
funding  through  private  or  public  equity  or  debt  financings,  or  other  sources  such  as  strategic  collaborations.  Adequate  additional  funding  may  not  be
available to us on acceptable terms or at all. Our failure to raise capital as and when needed could have a negative impact on our financial condition and our
ability to pursue our business strategies.

The timing and amount of our capital expenditures will depend on many factors, including:

•

•

•

•

•

•

•

•

the number and scope of clinical indications and clinical trials we decide to pursue;

the scope and costs of commercial manufacturing activities;

the extent to which we acquire or in-license other product candidates and technologies, if any;

the cost, timing and outcome of regulatory review of our product candidates;

the cost and timing of establishing sales and marketing capabilities for product candidates receiving marketing approval, if any;

the costs of preparing, filing and prosecuting patent applications, maintaining and enforcing our intellectual property rights and defending
intellectual property-related claims;

our efforts to enhance operational systems and our ability to attract, hire and retain qualified personnel, including personnel to support the
development of our product candidates; and

the costs associated with being a public company.

If  we  are  unable  to  raise  additional  funds  when  needed,  we  may  be  required  to  delay,  reduce  or  terminate  some  or  all  of  our  development  and
commercialization efforts. We may also be required to sell or license to others rights to our product candidates in certain territories or indications that we
would prefer to develop and commercialize ourselves.

The issuance of additional equity securities may cause our stockholders to experience dilution. Future equity or debt financings may contain terms
that are not favorable to us or our stockholders including debt instruments imposing covenants that restrict our operations and limit our ability to incur liens,
issue additional debt, pay dividends, repurchase our common stock, make certain investments or engage in certain merger, consolidation, licensing or asset
sale transactions.

85

 
 
 
 
 
 
 
 
 
Contractual Obligations and Commitments

The following table outlines our contractual obligations and commitments at December 31, 2018 (in thousands):

Operating lease obligations (1)
Purchase obligations (2)

Total

Total

13,867    $
15,604 
29,471    $

  $

  $

Less than
1 Year

Payments Due by Period
1-3
Years

403    $

15,604 
16,007    $

2,504    $
— 
2,504    $

3-5
Years

  More than 5

Years

2,656    $
— 
2,656    $

8,304 
— 
8,304

(1)
(2)

Operating lease obligations represent future minimum lease payments due under our current facility lease.
Purchase obligations represent noncancelable minimum service fees due to counterparties under various master service agreements.

In  addition  to  the  amounts  included  in  the  table  above,  the  we  enter  into  contracts  in  the  normal  course  of  business  with  CROs  and  other
counterparties assisting with our preclinical studies and clinical trials. Such contracts are generally cancellable, with varying provisions regarding termination.
In  the  event  of  a  contract  being  terminated,  we  would  only  be  obligated  for  services  received  as  of  the  effective  date  of  the  termination,  along  with
cancellation fees, as applicable.

Off-Balance Sheet Arrangements

Since our inception, we have not entered into any off-balance sheet arrangements as defined in the rules and regulations of the SEC.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

Interest Rate Sensitivity

We are exposed to market risk related to changes in interest rates. Our primary exposure to market risk is interest rate sensitivity, which is affected by
changes in the general level of U.S. interest rates, particularly because our investments, including cash equivalents, are in money market funds that invest in
U.S. Treasury obligations. The primary objective of our investment activities is to preserve capital to fund our operations. We also seek to maximize income
from our investments without assuming significant risk. Due to the short-term maturities and low credit risk profile of our balances held in money market
funds, a hypothetical 10% change in interest rates would not have a material effect on the fair market value of our cash equivalents and marketable securities.

Foreign Currency Sensitivity

Our primary operations are transacted in U.S. Dollars, however, certain service agreements with third parties are denominated in currencies other than
the  U.S.  Dollar,  primarily  the  British  Pound  and  Euro.  As  such,  we  are  subject  to  foreign  exchange  risk  and  therefore,  fluctuations  in  the  value  of  the
U.S. Dollar against the British Pound and Euro may impact the amounts reported for expenses and obligations incurred under such agreements. We do not
currently  engage  in  any  hedging  activity  to  reduce  our  potential  exposure  to  currency  fluctuations,  although  we  may  choose  to  do  so  in  the  future.  A
hypothetical 10% change in foreign exchange rates during any of the periods presented would not have had a material impact on our financial condition or
results of operations.

86

 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
  
  
  
  
 
 
Item 8. Financial Statements and Supplementary Data.

ALLAKOS INC.
INDEX TO FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm

Audited Financial Statements:

Balance Sheets

Statements of Operations and Comprehensive Loss

Statements of Stockholders’ Equity (Deficit)

Statements of Cash Flows

Notes to Financial Statements

87

Page

88

89

90

91

92

93

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of
Allakos Inc.

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Allakos Inc. (the Company) as of December 31, 2018 and 2017, the related statements of operations and
comprehensive loss, statements of convertible preferred stock and stockholders’ equity (deficit) and cash flows for each of the three years in the period ended
December 31, 2018, 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, 2018 and 2017, and the results of its operations and its cash flows for each of the
three years in the period ended December 31, 2018, 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 2016.

Redwood City, California

March 14, 2019

88

 
ALLAKOS INC.
BALANCE SHEETS
(in thousands, except per share data)

Assets
Current assets:

Cash and cash equivalents
Investments in marketable securities
Prepaid expenses and other current assets

Total current assets

Property and equipment, net
Other long-term assets
Total assets

Liabilities, convertible preferred stock and stockholders' equity (deficit)
Current liabilities:

Accounts payable
Accrued expenses and other current liabilities

Total current liabilities

Other long-term liabilities
Total liabilities

Commitments and contingencies (Note 7)
Series A convertible preferred stock, $0.001 par value per share; no shares
   and 26,083 shares authorized as of December 31, 2018, and 2017,
   respectively; no shares and 20,866 shares issued and outstanding
   as of December 31, 2018 and 2017, respectively; aggregate
   liquidation preference of $0 and $46,950 as of December 31, 2018
   and 2017, respectively
Series B convertible preferred stock, $0.001 par value per share;
   no shares and 12,632 shares authorized as of December 31, 2018 and,
   2017, respectively; no shares and 10,105 shares issued and outstanding
   as of December 31, 2018 and 2017, respectively; aggregate liquidation
   preference of $0 and $100,141 as of December 31, 2018 and 2017,
   respectively
Stockholders' equity (deficit):

Preferred stock, $0.001 par value per share; 20,000 and no shares
   authorized as of December 31, 2018 and 2017, respectively; no
   shares issued and outstanding as of December 31, 2018 and 2017
Common stock, $0.001 par value per share; 200,000 and 55,000 shares
   authorized as of December 31, 2018 and 2017, respectively; 42,117
   and 2,114 shares issued and outstanding as of December 31, 2018
   and 2017, respectively

Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit

Total stockholders’ equity (deficit)

Total liabilities, convertible preferred stock and stockholders’ equity (deficit)

  $

See accompanying notes to financial statements

89

December 31,

2018

2017

  $

  $

  $

 $

33,660 
145,246   
2,703   
181,609   
8,848   
802   
191,259    $

 $

2,092 
3,164   
5,256   
2,009   
7,265   

85,207 
— 
1,037 
86,244 
445 
340 
87,029 

1,703 
1,089 
2,792 
36 
2,828 

—   

42,996 

—   

99,973 

—   

— 

42   
288,079   
(15)  
(104,112)  
183,994   
191,259    $

3 
1,803 
— 
(60,574)
(58,768)
87,029

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ALLAKOS INC.
STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
(in thousands, except per share data)

Operating expenses

Research and development
General and administrative
Total operating expenses

Loss from operations
Interest income (expense), net
Other income (expense), net
Loss before benefit from income taxes
Provision for (benefit from) income taxes
Net loss
Unrealized loss on marketable securities, net of tax
Comprehensive loss

Net loss per common share:

Basic and diluted

Weighted-average number of common shares
   outstanding:

Basic and diluted

2018

Year Ended December 31,
2017

2016

  $

  $

  $

33,287    $
12,434   
45,721   
(45,721)  
2,375   
(192)  
(43,538)  
—   
(43,538)  
(15)  
(43,553)   $

18,506 
3,748 
22,254 
(22,254)
(1,302)
(287)
(23,843)
(291)
(23,552)
— 
(23,552)

 $

 $

14,672 
2,388 
17,060 
(17,060)
(51)
11 
(17,100)
— 
(17,100)
— 
(17,100)

(2.20)

 $

(14.54)

 $

(13.03)

19,833 

1,620 

1,312

See accompanying notes to financial statements

90

 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
   
   
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
  
  
  
  
  
 
 
  
 
 
  
  
  
 
 
  
  
 
 
 
ALLAKOS INC.
STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT)
(in thousands)

Balance as of December 31, 2015

Issuance of Series A convertible preferred stock for cash,
   net of issuance costs of $8
Reclassification of preferred stock tranche liability upon
   issuance of Series A convertible preferred stock
Stock-based compensation expense
Issuance of common stock warrants in connection with
   debt facility
Issuance of common stock upon exercise of stock options
Vesting of restricted common stock
Net loss

Balance as of December 31, 2016

Issuance of Series B convertible preferred stock for cash,
   net of issuance costs of $168
Issuance of Series B convertible preferred stock upon
   conversion of convertible promissory notes
Stock-based compensation expense
Repurchase of unvested restricted common stock
Issuance of common stock upon exercise of stock options
Vesting of restricted common stock
Recognition of beneficial conversion feature related to
   convertible promissory notes payable to related parties,
   net of $966 tax benefit
Reclassification of beneficial conversion feature related to
   convertible promissory notes payable to related parties,
   net of $675 tax expense
Net loss

Balance as of December 31, 2017

Proceeds from repayment of recourse promissory note
Conversion of preferred stock upon initial public offering
Issuance of common stock upon initial public offering, net of
   offering costs of $3,466
Stock-based compensation expense
Issuance of common stock upon exercise of stock options
Issuance of common stock upon exercise of warrants
Vesting of restricted common stock
Unrealized loss on marketable securities, net of tax
Net loss

Balance as of December 31, 2018

Convertible
Preferred Stock

Common Stock

Additional
Paid-In
Capital

Accumulated
Other
Comprehensive
Loss

Accumulated
Deficit

Total
Stockholders’
Equity
(Deficit)

Shares

Amount

Shares

12,422 

  $

22,210 

1,565 

  Amount  
2 
  $

  $

322 

  $

— 

  $

(19,922)   $

(19,598)

8,444 

18,991 

— 
— 

— 
— 
— 
— 
20,866 

  $

1,795 
— 

— 
— 
— 
— 
42,996 

9,334 

92,331 

7,642 
— 
— 
— 
— 

771 
— 
— 
— 
— 

— 

— 

— 
— 

— 
40 
— 
— 
1,605 

— 

  $

— 
— 
(34)  
543 
— 

— 

— 

— 
— 
30,971 
— 

  $

— 
— 
142,969 
— 

(30,971)  

(142,969)  

— 
— 
— 
— 
— 
— 
— 
— 

  $

— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
2,114 
— 
30,972 

8,453 
— 
531 
47 
— 
— 
— 
42,117 

  $

  $

— 

— 
— 

— 
— 
— 
— 
2 

— 

— 
— 
— 
1 
— 

— 

— 
— 
3 
— 
30 

8 
— 
1 
— 
— 
— 
— 
42 

  $

  $

— 

— 
182 

24 
20 
36 
— 
584 

— 

— 
402 
— 
227 
28 

1,867 

  $

(1,305)  
— 
1,803 
50 
142,939 

  $

138,349 
4,570 
344 
— 
24 
— 
— 
288,079 

  $

  $

— 

— 
— 

— 
— 
— 
— 
— 

— 

— 
— 
— 
— 
— 

— 

— 
— 
— 
— 
— 

— 

— 
— 

— 
— 
— 

(17,100)  
(37,022)   $

  $

— 

— 
— 
— 
— 
— 

— 

— 

  $

(23,552)  
(60,574)   $
— 
— 

— 
— 
— 
— 
— 
(15)  
— 
(15)   $

— 
— 
— 
— 
— 
— 

(43,538)  
(104,112)   $

— 

— 
182 

24 
20 
36 
(17,100)
(36,436)

— 

— 
402 
— 
228 
28 

1,867 

(1,305)
(23,552)
(58,768)
50 
142,969 

138,357 
4,570 
345 
— 
24 
(15)
(43,538)
183,994  

See accompanying notes to financial statements

91

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
ALLAKOS 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:

Stock-based compensation
Net amortization of premiums and discounts on marketable securities
Amortization of beneficial conversion feature related to convertible
   promissory notes payable to related parties
Benefit from deferred income taxes
Depreciation and amortization
Noncash interest related to convertible promissory notes payable to
   related parties
Loss on extinguishment of debt facility
Noncash interest related to debt facility
Accretion of tenant improvement allowance

Changes in operating assets and liabilities:

Prepaid expenses and other current assets
Other long-term assets
Accounts payable
Accrued expenses and other current liabilities
Other long-term liabilities

Net cash used in operating activities

Cash flows from investing activities
Purchases of marketable securities
Proceeds from maturities of marketable securities
Purchases of property and equipment

Net cash used in investing activities

Cash flows from financing activities

Proceeds from issuance of common stock, net of issuance costs
Proceeds from issuance of convertible preferred stock,
   net of issuance costs
Proceeds from issuance of convertible promissory notes,
   net of issuance costs
Repayment of debt facility
Proceeds from debt facility, net of issuance costs
Proceeds from exercise of stock options, net of repurchases
Payments for deferred financing costs
Proceeds from repayment of recourse promissory note

Net cash provided by financing activities

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

Cash, cash equivalents and restricted cash, beginning of period
Cash, cash equivalents and restricted cash, end of period

Supplemental disclosures
Cash paid for interest
Noncash investing and financing items:

Conversion of convertible promissory notes payable to related parties
Recognition of beneficial conversion feature related to convertible
   promissory notes to related parties, net of benefit for income taxes
Reclassification of preferred stock tranche liability upon settlement
Lessor funded lease incentives included in property and equipment
Reclassification of beneficial conversion feature related to convertible
   promissory notes payable to related parties, net of tax expense
Property and equipment purchased in accounts payable
Deferred initial public offering costs in accounts payable
Vesting of restricted common stock subject to repurchase
Issuance of common stock warrants in connection with debt facility

2018

Year Ended December 31,
2017

2016

  $

(43,538)   $

(23,552)   $

(17,100)

4,570 
(1,310)  

— 
— 
242 

— 
— 
— 
(82)  

(1,489)  
313 
76 
2,063 
705 
(38,450)  

(236,601)  
92,500 
(6,946)  
(151,047)  

138,357 

— 

— 
— 
— 
345 
— 
50 
138,752 

(50,745)  
85,207 
34,462 

  $

— 

  $

— 

  $

— 
— 
1,386 

  $
  $
  $

— 
313 
— 
24 
— 

  $
  $
  $
  $
  $

402 
— 

853 
(291)  
241 

228 
159 
101 
— 

(637)  
(150)  
510 
(432)  
— 

(22,568)  

— 
— 
(264)  
(264)  

— 

92,331 

7,414 
(5,250)  
— 
228 
(100)  
— 
94,623 

71,791 
13,416 
85,207 

  $

228 

7,642 

1,867 
— 
— 

1,305 
89 
63 
28 
— 

 $

 $

 $
 $
 $

 $
 $
 $
 $
 $

182 
— 

— 
— 
148 

— 
— 
29 
— 

275 
(250)
(1,141)
279 
— 
(17,578)

— 
— 
(234)
(234)

— 

18,991 

— 
— 
4,985 
36 
— 
— 
24,012 

6,200 
7,216 
13,416 

39 

— 

— 
1,795 
— 

— 
— 
— 
20 
24  

  $

  $

  $

  $
  $
  $

  $
  $
  $
  $
  $

See accompanying notes to financial statements

92

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
  
  
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
 
  
 
 
  
 
 
  
  
  
 
ALLAKOS INC.
NOTES TO FINANCIAL STATEMENTS

1. Organization and Business

Allakos Inc. (“Allakos” or the “Company”) was incorporated in the state of Delaware in March 2012. Allakos is a clinical stage biopharmaceutical
company focused on the development of AK002 for the treatment of eosinophil and mast cell related diseases. The Company’s primary activities to date have
included establishing its facilities, recruiting personnel, conducting research and development of its product candidates and raising capital. The Company’s
operations are located in Redwood City, California.

Liquidity Matters

Since  inception,  the  Company  has  incurred  net  losses  and  negative  cash  flows  from  operations.  During  the  year  ended  December  31,  2018,  the
Company incurred a net loss of $43.5 million and used $38.5 million of cash in operations. As of December 31, 2018, the Company had an accumulated
deficit of $104.1 million and does not expect to experience positive cash flows from operating activities in the foreseeable future. The Company has financed
its  operations  to  date  primarily  through  the  sale  of  common  stock  and  issuance  of  convertible  preferred  stock.  Management  expects  to  incur  additional
operating losses in the future as the Company continues to further develop, seek regulatory approval for and, if approved, commence commercialization of its
product candidates. The Company had $178.9 million of cash, cash equivalents and marketable securities at December 31, 2018. Management believes that
this amount is sufficient to fund the Company’s operations for at least the next 12 months from the issuance date of these financial statements.

Initial Public Offering and Related Transactions

On July 23, 2018, the Company completed an initial public offering (“IPO”), selling 8,203,332 shares of common stock at an offering price of $18.00
per share. Proceeds from the IPO, net of underwriting discounts and commissions, were $137.3 million. Concurrently with the IPO, the Company completed a
private placement of 250,000 shares of common stock at the IPO offering price of $18.00 per share to an existing stockholder. Proceeds from this private
placement were $4.5 million.

In  connection  with  the  completion  of  the  IPO  on  July  23,  2018,  all  then  outstanding  shares  of  convertible  preferred  stock  were  converted  into

30,971,627 shares of common stock.

Upon the completion of the IPO, the Company’s certificate of incorporation was amended and restated. Under the amended and restated certificate of
incorporation,  the  Company’s  authorized  capital  stock  consists  of  200,000,000  shares  of  common  stock  with  a  par  value  $0.001  per  share  and
20,000,000 shares of convertible preferred stock with a par value $0.001 per share.

Reverse Stock Split

On  July  6,  2018,  the  Company  amended  its  certificate  of  incorporation  to  effect  a  1-for-1.25  reverse  stock  split  of  every  outstanding  share  of  its
convertible preferred stock and common stock. The Company’s audited financial statements and accompanying notes for the years ended December 31, 2017
and 2016 on the Company’s Second Amendment to its Registration Statement No. 333-225836, filed with the Securities and Exchange Commission (“SEC”)
on July 17, 2018, have been retroactively restated to reflect the reverse stock split.

2. Summary of Significant Accounting Policies

Basis of Presentation

The  financial  statements  have  been  prepared  in  accordance  with  United  States  generally  accepted  accounting  principles  (“U.S.  GAAP”).  The
preparation  of  financial  statements  in  conformity  with  U.S.  GAAP  requires  management  to  make  estimates  and  assumptions  that  affect  the  amounts  and
disclosures reported in the financial statements and accompanying notes.

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Use of Estimates

Management uses significant judgment when making estimates related to common stock valuation and related stock-based compensation expense,
accrued expenses related to clinical trials and deferred tax valuation allowances. Management bases its estimates on historical experience and on various other
assumptions that are believed 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  could  differ  from  those  estimates  under  different  assumptions  or
conditions, and those differences could be material to the financial position and results of operations.

Concentration of Credit Risk and Other Risks and Uncertainties

Financial instruments that potentially subject the Company to credit risk principally consist of cash, cash equivalents and marketable securities. These
financial instruments are held in accounts at select financial institutions that management believes possess high credit quality. Amounts on deposit with these
financial  institutions  have  and  will  continue  to  exceed  federally-insured  limits.  The  Company  has  not  experienced  any  losses  on  its  cash  deposits.
Additionally, the Company’s investment policy limits its investments to certain types of securities issued by the U.S. government and its agencies.

The Company is subject to a number of risks similar to that of other early-stage biopharmaceutical companies, including, but not limited to, the need
to obtain adequate additional funding, possible failure of current or future clinical trials, its reliance on third-parties to conduct its clinical trials, the need to
obtain  regulatory  and  marketing  approvals  for  its  product  candidates,  competitive  developments,  the  need  to  successfully  commercialize  and  gain  market
acceptance of the Company’s product candidates, its right to develop and commercialize its product candidates pursuant to the terms and conditions of the
licenses  granted  to  the  Company,  protection  of  proprietary  technology,  the  ability  to  make  milestone,  royalty  or  other  payments  due  under  licensing
agreements,  and  the  need  to  secure  and  maintain  adequate  manufacturing  arrangements  with  third-parties.  If  the  Company  does  not  successfully
commercialize or partner its product candidates, it will be unable to generate product revenue or achieve profitability.

Cash, Cash Equivalents and Restricted Cash

The  Company  considers  all  highly  liquid  investments  with  original  maturities  of  three  months  or  less  from  the  date  of  purchase  to  be  cash
equivalents.  The  following  table  provides  a  reconciliation  of  cash,  cash  equivalents  and  restricted  cash  reported  within  the  Company’s  balance  sheets  and
which, in aggregate, represent the amounts reported in the statements of cash flows (in thousands):

Cash and cash equivalents
Restricted cash

Total

  $

  $

2018

33,660    $
802   
34,462    $

December 31,
2017

85,207 
— 
85,207 

 $

 $

2016

13,416 
— 
13,416

Restricted cash at December 31, 2018 represents $0.8 million in deposits restricted from withdrawal and held by a bank in the form of collateral for
an  irrevocable  standby  letter  of  credit  held  as  security  for  the  lease  of  the  Company’s  facility  in  Redwood  City,  California.  Restricted  cash  amounts  are
included within long term assets on the Company’s balance sheets.

Marketable Securities

The  Company  invests  in  marketable  securities,  primarily  securities  issued  by  the  U.S.  government  and  its  agencies.  Investments  with  contractual
maturities greater than 90 days that mature less than one year from the balance sheet date are classified as short-term investments. Those investments with a
contractual  maturity  date  greater  than  one  year  are  considered  long-term  investments.  Unrealized  gains  and  losses  are  excluded  from  earnings  and  are
reported  as  a  component  of  accumulated  comprehensive  income  (loss).  The  cost  of  securities  sold  is  determined  using  the  specific-identification  method.
Interest  earned  and  adjustments  for  the  amortization  of  premiums  and  discounts  on  investments  are  included  in  interest  income  (expense),  net,  on  the
statements  of  operations  and  comprehensive  loss.  Realized  gains  and  losses  and  declines  in  fair  value  judged  to  be  other  than  temporary,  if  any,  on
investments in marketable securities are included in other income (expense), net, on the statements of operations and comprehensive loss.

94

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
Fair Value Measurements

The Company accounts for fair value of its financial instruments in accordance with Financial Accounting Standards Board (the “FASB”) Accounting
Standards Codification (“ASC”) Topic No. 820, Fair Value Measurements (“ASC 820”). ASC 820 establishes a common definition for fair value, establishes
a framework for measuring fair value and expands disclosures about such fair value measurements. Additionally, ASC 820 defines fair value as the price that
would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

The  Company  measures  fair  value  based  on  a  three-level  hierarchy  of  inputs,  of  which  the  first  two  are  considered  observable  and  the  last
unobservable. Unobservable inputs reflect the Company’s own assumptions about current market conditions. The three-level hierarchy of inputs is as follows:

Level 1 – Quoted prices in active markets for identical assets or liabilities.

Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices
in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets
or liabilities.

Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of assets or liabilities.

To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value
requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in
Level  3.  A  financial  instrument’s  level  within  the  fair  value  hierarchy  is  based  on  the  lowest  level  of  any  input  that  is  significant  to  the  fair  value
measurement.

The carrying amounts reflected in the Company’s balance sheets for cash and cash equivalents, prepaid expenses and other current assets, other long-

term assets, accounts payable, and accrued expenses and other current liabilities approximate fair value, due to their short-term nature.

Deferred Initial Public Offering Costs

Costs incurred in connection with the IPO primarily consist of direct incremental legal, printing and accounting fees. IPO costs are capitalized as
incurred and will be offset against proceeds upon consummation of the offering. In the event the offering had been terminated or abandoned, deferred IPO
costs would have been expensed in the period such determination had been made. As of December 31, 2017, there was $0.2 million of deferred IPO costs
included in other long-term assets on the Company’s balance sheets. The Company completed its IPO in July 2018. Accordingly, there were no deferred IPO
offering costs at December 31, 2018.

Lease Liabilities

The Company classifies the agreements for its office and laboratory facilities as an operating lease. Rent expense is recorded on a straight-line basis
over the term of the lease. Differences that exist between cash rent payments and the recognition of rent expense, such as those resulting from rent abatements
or contractual escalations of minimum lease payments, are recorded as a deferred rent liability and recognized as adjustments to rental expense on a straight-
line basis over the term of the lease. The current portion of the deferred rent liability is included within accrued expenses and other current liabilities on the
Company’s balance sheets. Noncurrent portion of deferred rent liability is classified as other long-term liabilities. Tenant improvement allowances received
are recorded as lease incentive obligations included in accrued expenses and other current liabilities and other long-term liabilities on the Company’s balance
sheets and are amortized to rent expense over the term of the lease.

95

 
Term Loan Financing Costs

During  the  year  ended  December  31,  2017,  the  Company  recognized  noncash  interest  expense  of  $101,000,  related  to  its  then  outstanding  debt
facility. Noncash interest included the amortization and accretion of various costs incurred in connection with the issuance of the associated debt instruments
and  calculated  using  the  effective  interest  rate  method  over  the  expected  term  of  the  debt.  In  December  2017,  the  Company  repaid  all  outstanding  debt.
Noncash interest expense was included in interest income (expense), net, within the Company’s statements of operations and comprehensive loss.

Property and Equipment, Net

Property  and  equipment  are  stated  at  cost,  net  of  accumulated  depreciation.  Depreciation  is  computed  using  the  straight-line  method  over  the

estimated useful lives of the assets. The useful lives of property and equipment are as follows:

Laboratory equipment – 3 to 5 years

Leasehold improvements – Shorter of remaining lease term or estimated life of the assets

Upon retirement or sale, the cost of disposed assets and their related accumulated depreciation are removed from the balance sheet. Any resulting
gains or losses on dispositions of property and equipment are included as a component of other income (expense), net, within the Company’s statements of
operations and comprehensive loss. Repair and maintenance costs that do not significantly add value to the property and equipment, or prolong its life, are
charged to operating expense as incurred.

Research and Development Expense

Research  and  development  costs  are  expensed  as  incurred.  Research  and  development  costs  include,  among  others,  consulting  costs,  salaries,
benefits,  travel,  stock-based  compensation,  laboratory  supplies  and  other  non-capital  equipment  utilized  for  in-house  research,  allocation  of  facilities  and
overhead  costs  and  external  costs  paid  to  third-parties  that  conduct  research  and  development  activities  on  the  Company’s  behalf.  Amounts  incurred  in
connection with license agreements are also included in research and development expense.

Advance  payments  for  goods  or  services  to  be  rendered  in  the  future  for  use  in  research  and  development  activities  are  deferred  and  included  in

prepaid expenses and other current assets. The deferred amounts are expensed as the related goods are delivered or the services are performed.

Accrued Research and Development Costs

Service agreements with contract research organizations (“CROs”) and contract development and manufacturing organizations (“CDMOs”) comprise
a  significant  component  of  the  Company’s  research  and  development  activities.  External  costs  for  CROs  and  CDMOs  are  recognized  as  the  services  are
incurred. The Company accrues for expenses resulting from obligations under agreements with its third-parties for which the timing of payments does not
match the periods over which the materials or services are provided to the Company. Accruals are recorded based on estimates of services received and efforts
expended  pursuant  to  agreements  established  with  CROs,  CDMOs  and  other  outside  service  providers.  These  estimates  are  typically  based  on  contracted
amounts  applied  to  the  proportion  of  work  performed  and  determined  through  analysis  with  internal  personnel  and  external  service  providers  as  to  the
progress or stage of completion of the services.

96

 
The Company makes judgements and estimates in determining the accrual balance in each reporting period. In the event advance payments are made
to a CRO, CDMO or other outside service provider, the payments are recorded within prepaid expenses and other current assets and subsequently recognized
as research and development expense when the associated services have been performed. As actual costs become known, the Company adjusts its liabilities
and assets. Inputs, such as the extent of services received and the duration of services to be performed, may vary from the Company’s estimates, which will
result  in  adjustments  to  research  and  development  expense  in  future  periods.  Changes  in  these  estimates  that  result  in  material  changes  to  the  Company’s
accruals  could  materially  affect  the  Company’s  results  of  operations.  The  Company’s  historical  estimates  have  not  been  materially  different  from  actual
amounts recorded.

Convertible Debt Features

Beneficial  conversion  features  embedded  within  the  Company’s  convertible  debt  instruments  are  recognized  at  their  intrinsic  value  at  the
commitment date. Intrinsic value is calculated as the difference between the effective conversion price and the fair value of the preferred stock into which the
debt is convertible, multiplied by the number of shares of preferred stock into which the debt is convertible. The Company allocates a portion of the proceeds
from issuance of the convertible debt to the beneficial conversion feature as a reduction to the carrying value of the debt, with the offset to additional paid-
in capital. The resulting debt discount is amortized to interest expense through the stated maturity date of the convertible debt instrument using the effective
interest method. Conversion of the debt to convertible preferred stock is accounted for as an extinguishment. Upon conversion, all unamortized discounts at
the conversion date are recognized immediately as interest expense. The Company then allocates a portion of the reacquisition price to the repurchase of the
beneficial conversion feature, as calculated by the intrinsic value of the conversion option at the extinguishment date. The residual amount, if any, is allocated
to the convertible debt instrument. The gain or loss on extinguishment of the convertible debt instrument is measured as the difference between the retired
debt’s reacquisition price and carrying amount prior to extinguishment. Gains or losses resulting from convertible debt instruments issued to related parties
are classified as capital contributions or distributions.

Preferred Stock Tranche Rights

Convertible preferred stock that includes features the Company has determined are not clearly and closely related to the equity host are bifurcated and
accounted for separately as freestanding derivative assets or liabilities on the balance sheet at their estimated fair value. The Company historically recorded
preferred stock derivative liabilities resulting from certain investors’ rights to purchase from the Company, on the same terms as the Series A Preferred Stock
Purchase  Agreement  executed  in  December  2012,  additional  shares  of  Series  A  convertible  preferred  stock  in  a  second  and  third  tranche.  At  initial
recognition, the Company recorded these derivatives as an asset or liability on the balance sheets at their estimated fair value. The derivatives were subject to
remeasurement at each balance sheet date, with changes in fair value recognized as a component of other income (expense), net on the Company’s statements
of operations and comprehensive loss. At the time of each tranche funding, the Company remeasured the derivative asset or liability, with the change in fair
value recognized as a component of other income (expense), net and then reclassified the remaining value associated with the preferred stock derivative to
Series A convertible preferred stock.

Convertible Preferred Stock

The  Company  recorded  all  shares  of  convertible  preferred  stock  net  of  offering  costs  at  their  respective  fair  values  on  the  dates  of  issuance.  The
convertible  preferred  stock  was  recorded  outside  of  stockholders’  deficit  because,  in  the  event  of  certain  deemed  liquidation  events  considered  not  solely
within the Company’s control, such as a merger, acquisition or sale of all or substantially all of the Company’s assets, the convertible preferred stock will
become redeemable at the option of the holders. In the event of a change of control of the Company, proceeds received from the sale of such shares will be
distributed in accordance with the liquidation preferences set forth in the Company’s Second Amended and Restated Certificate of Incorporation unless the
holders of convertible preferred stock had previously converted their shares of convertible preferred stock into shares of common stock. In connection with
the  completion  of  the  Company’s  IPO  in  July  2018,  all  then  outstanding  shares  of  convertible  preferred  stock  were  converted  into  30,971,627  shares  of
common stock.

Segments

Operating  segments  are  defined  as  components  of  an  entity  about  which  separate  discrete  information  is  available  for  evaluation  by  the  chief

operating decision maker or decision-making group, in deciding how to allocate

97

 
resources and in assessing performance. The Company’s chief operating decision maker, its Chief Executive Officer, views its operations and manages its
business in one operating segment operating exclusively in the United States.

Patent Costs

The Company expenses patent application and related legal costs as incurred and classifies such costs as general and administrative expenses in the

statements of operations and comprehensive loss

Stock-Based Compensation

The  Company  accounts  for  its  stock-based  compensation  in  accordance  with  FASB  ASC  Topic  718,  Compensation—Stock  Compensation  (“ASC
718”). ASC 718 requires all stock-based payments to employees and directors to be recognized as expense in the statements of operations and comprehensive
loss  based  on  their  grant  date  fair  values.  For  purposes  of  determining  the  estimated  fair  value  of  stock  options  granted  to  employees  and  directors,  the
Company  uses  the  Black-Scholes  option  pricing  model.  The  Black-Scholes  option  pricing  model  requires  the  input  of  certain  assumptions  that  involve
judgment, for which changes can materially affect the resulting estimates of fair value. The assumptions used to determine the fair value of stock options
granted were as follows:

Expected volatility – As there is insufficient trading history for the Company’s common stock, the Company has based its computation of expected
volatility  on  the  historical  volatility  of  a  representative  group  of  public  companies  with  similar  characteristics  to  the  Company,  including  stage  of
product development and life science industry focus. The historical volatility is calculated based on a period of time commensurate with the expected
term assumption.

Expected  term  –  The  Company  determines  the  expected  term  in  accordance  with  the  “simplified  method”  described  by  SEC  Staff  Accounting
Bulletin No. 107, Share-Based Payment, as it does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate
the expected term.

Risk-free interest rate – The Company bases the risk-free interest rate on United States Treasury securities with terms consistent to the expected term
of the stock option being valued.

Expected dividends – The expected dividend yield is assumed to be zero as the Company has never paid dividends and has no current plans to pay
any dividends on its common stock.

The Company uses historical data to estimate pre-vesting forfeitures and records stock-based compensation expense only for those awards expected
to vest. To the extent that actual forfeitures differ from estimates, the difference is recorded as a cumulative adjustment in the period the estimate are revised.
The Company expenses the fair value of its stock-based compensation awards to employees on a straight-line basis over the requisite service period, which is
generally the vesting period.

Income Taxes

In  December  2017,  the  Tax  Cuts  and  Jobs  Act  of  2017  (the  “Tax  Act”)  was  signed  into  law.  The  Tax  Act,  among  other  changes,  lowered  the
Company’s federal tax rate from 34% to 21%. Based on provisions of the Tax Act, the Company remeasured its deferred tax assets and liabilities at December
31, 2017 to reflect the lower statutory tax rate, however, since the Company established a full valuation allowance to offset its deferred tax assets, there was
no  impact  to  the  effective  tax  rate.  The  deferred  tax  remeasurement  was  provisional  and  represented  our  reasonable  estimate  within  the  meaning  of  Staff
Accounting Board 118, which provided a measurement period that should not extend beyond one year from the Tax Act’s enactment date for companies to
complete the accounting under ASC 740. As of December 31, 2018, the Company has completed its analysis of the income tax effects of the Tax Act. The
results of this analysis have been reflected in the Company’s financial statements and related footnotes.

98

 
Comprehensive Loss

Comprehensive loss is defined as the change in stockholders’ equity (deficit) during a period from transactions and other events and circumstances
from non-owner sources. The difference between net loss and comprehensive loss for the year ended December 31, 2018 is a result of unrealized losses on the
Company’s investments in marketable securities included in current assets on the balance sheets.

Net Loss per Share

The  Company  calculates  basic  net  loss  per  share  by  dividing  the  net  loss  attributable  to  common  stockholders  by  the  weighted-average  shares  of
common stock outstanding during the period. The Company calculates diluted net loss per share after giving consideration to all potentially dilutive securities
outstanding during the period using the treasury-stock and if-converted methods, except where the effect of including such securities would be anti-dilutive.
Because the Company has reported net losses since inception, the effect from potentially dilutive securities would have been anti-dilutive and therefore has
been excluded from the calculation of diluted net loss per share.

Basic and diluted net loss per share was calculated as follows (in thousands, except per share data):

Numerator:
Net loss
Denominator:

Weighted-average shares of common stock
   outstanding, basic and diluted
Net loss per share, basic and diluted

2018

Year Ended December 31,
2017

2016

(43,538)   $

(23,552)

 $

(17,100)

19,833   

(2.20)   $

1,620 
(14.54)

 $

1,312 
(13.03)

 $

 $

The following table sets forth the potentially dilutive securities that have been excluded from the calculation of diluted net loss per share due to their

anti-dilutive effect for the periods indicated (in thousands):

Series A convertible preferred stock
Series B convertible preferred stock
Options to purchase common stock
Warrants to purchase common stock
Unvested restricted common stock
Shares issuable under 2018 Employee Stock Purchase Plan

Total

Foreign Currency Transactions

2018

Year Ended December 31,
2017

2016

—   
—   
7,811   
—   
47   
29   
7,887   

20,866 
10,105 
4,884 
48 
104 
— 
36,007 

20,866 
— 
2,722 
48 
205 
— 
23,841

The Company is party to multiple contract manufacturing and clinical research agreements for which services to be performed are denominated in
foreign currencies other than the United States Dollar. The Company records gains and losses attributable to fluctuations in foreign currencies as a component
of other income (expense), net, on the statements of operations and comprehensive loss.

Recent Accounting Pronouncements

In  August  2018,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  Accounting  Standards  Update  (“ASU”)  No.  2018-13,  Fair  Value
Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. This ASU eliminates, modifies and
adds disclosure requirements for fair value measurements. The amendments in this ASU are effective for fiscal years, and for interim periods within those
fiscal years, beginning after December 15, 2019, with early adoption permitted. The Company is currently evaluating the effects of this ASU on its financial
statements and related disclosures.

99

 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
    
   
   
 
    
 
  
    
 
  
  
  
  
 
  
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
  
 
  
 
In August 2018, the SEC adopted amendments to certain disclosure requirements in the Securities Act Release No. 33-10532, Disclosure Update and
Simplification. Under the amendments, the Company must provide an analysis of changes in each caption of stockholders' equity presented in the balance
sheet in a note or separate statement. The Company will adopt the amendments beginning with the first quarter of fiscal year 2019. The Company does not
expect the adoption of this standard to have a material impact on its financial statements. 

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842),  which  generally  requires  lessees  to  recognize  operating  and  financing
lease liabilities and corresponding right-of-use assets on the balance sheet along with enhanced disclosures surrounding the amount, timing and uncertainty of
cash  flows  arising  from  such  leasing  arrangements.  Subsequently,  in  July  2018,  the  FASB  issued  ASU  No.  2018-11,  Leases  (Topic  842):  Targeted
Improvements, which includes a transition method for companies adopting ASU 2016-02 through the recognition of a cumulative-effect adjustment to the
opening balance of accumulated deficit or retained earnings in the period of adoption. The Company plans to adopt both standards effective January 1, 2019
using a modified retrospective approach, taking advantage of certain practical expedients permitted under the transition guidance. Practical expedients the
Company plans to elect include (i) carrying forward historical lease classifications, (ii) foregoing a re-evaluation of historical contracts to identify embedded
leases, (iii) foregoing a re-assessment of initial direct costs related to leases that existed prior to adoption, (iv) combining lease and non-lease components,
and (v) recognizing lease expense for all contracts with an initial term of 12 months or less within the statements of operations and comprehensive loss on a
straight-line  basis  over  the  requisite  lease  term.  The  Company  has  not  yet  completed  an  assessment  of  the  total  impact  such  adoption  will  have  on  the
Company’s financial statements and related disclosures but expects to record a right-of-use asset and a corresponding liability for the lease of its corporate
headquarters during the period of adoption.

In November 2016, the FASB issued ASU No. 2016-18, Statement  of  Cash  Flows:  Restricted  Cash  (“ASU  2016-18”).  ASU  2016-18  amends  the
classification and presentation of changes in restricted cash or restricted cash equivalents in the statement of cash flows. ASU 2016-18 is effective for public
business  entities  for  fiscal  years  beginning  after  December  15,  2017,  and  interim  periods  within  those  fiscal  years.  The  Company  retrospectively  adopted
ASU 2016-18 effective January 1, 2018. There was no significant impact to the Company’s financial statements as there were no restricted cash or restricted
cash equivalent balances in the prior periods.

3. Fair Value Measurements

The Company measures and reports certain financial instruments as assets and liabilities at fair value on a recurring basis. The Company’s financial

assets measured at fair value on a recurring basis were as follows (in thousands):

Cash equivalents

Money market funds

Total cash equivalents

Marketable securities
U.S. treasuries

Total marketable securities

Total cash equivalents and marketable
   securities

Cash equivalents

Money market funds

Total cash equivalents

Level 1

Level 2

Level 3

Total

December 31, 2018

  $
  $

  $
  $

  $

  $
  $

31,555    $
31,555    $

145,246    $
145,246    $

176,801    $

—    $
—    $

—    $
—    $

—    $

—    $
—    $

—    $
—    $

31,555 
31,555 

145,246 
145,246 

—    $

176,801

Level 1

Level 2

Level 3

Total

December 31, 2017

82,526    $
82,526    $

—    $
—    $

—    $
—    $

82,526 
82,526

The Company evaluates transfers between levels at the end of each reporting period. There were no transfers of assets or liabilities between levels

during the years ended December 31, 2018 and 2017.

100

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
 
 
   
   
   
   
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
    
 
  
 
 
4. Marketable Securities

All marketable securities were considered available-for-sale at December 31, 2018. The amortized cost, gross unrealized holding gains or losses, and

fair value of the Company’s marketable securities by major security type at December 31, 2018 are summarized in the table below (in thousands):

Marketable securities
U.S. treasuries

Total

Amortized
Cost Basis

December 31, 2018

Unrealized
Gains

Unrealized
Losses

Fair
Value

  $
  $

145,261    $
145,261    $

—    $
—    $

(15)   $
(15)   $

145,246 
145,246

The Company had no other-than-temporary impairments on its marketable securities during the year ended December 31, 2018. The Company has

the intent and ability to hold all marketable securities until their maturities.

The Company held no marketable securities at December 31, 2017.

5. Balance Sheet Components and Supplemental Disclosures

Property and Equipment, Net

Property and equipment, net, consisted of the following (in thousands):

Laboratory equipment
Furniture and office equipment
Leasehold improvements

Less accumulated depreciation
Property and equipment, net

December 31,

2018

2017

  $

  $

3,272    $
1,666   
4,545   
9,483   
(635)  
8,848    $

949 
— 
55 
1,004 
(559)
445

Depreciation  and  amortization  expense  for  the  years  ended  December  31,  2018,  2017  and  2016  was  $0.2  million,  $0.2  million  and  $0.1  million,

respectively.

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

Accrued outside professional services
Accrued compensation and benefits
Lease incentive obligation, current
Other current liabilities

Total

6. Debt Facility

December 31,

2018

2017

  $

  $

1,964    $
1,041   
123   
36   
3,164    $

787 
265 
— 
37 
1,089

In June 2016, the Company entered into a Loan and Security Agreement with a financial institution, providing for term loans to the Company, in two
tranches  for  an  aggregate  principal  amount  of  $5.0  million.  Interest  on  the  term  loans  was  calculated  at  a  floating  per  annum  rate  equal  to  the  prime  rate
reported in The Wall Street Journal plus one quarter of one percent (0.25%). Upon execution of the agreement, the Company had immediate access to borrow
up to $2.5 million in principal. The remaining $2.5 million in principal would be made available to the Company on or prior to December 31, 2016, subject to
the satisfaction of certain borrowing conditions including the achievement of certain pre-defined clinical development milestones. In July 2016, the Company
drew down an initial term loan of $2.5 million. Subsequently, in December 2016, the Company drew down the remaining $2.5 million term loan. During 2017
this debt facility was fully repaid and terminated.

101

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
    
 
    
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The Company incurred upfront costs of $15,000 to issue the debt facility which were classified as a discount to the carrying value of the term loans
included on the balance sheet at December 31, 2016. Final payments due to the lender for facility fees of $0.2 million were treated as deferred issuance costs
and  accreted  to  interest  expense  over  the  term  of  the  loans.  Amortization  of  the  upfront  issuance  costs  and  accretion  of  the  deferred  issuance  costs  was
calculated using the effective interest method.

Common Stock Warrants

As part of the Loan and Security Agreement, the Company also agreed to issue the financial institution warrants to purchase shares of its common
stock upon each draw of the term loans. During the year ended December 31, 2016, the Company issued the financial institution warrants to purchase a total
of 47,616 shares of common stock at a weighted average exercise price of $0.61 per share. The common stock warrants were immediately exercisable upon
issuance  and  shall  remain  outstanding  for  a  period  of  ten  years  from  the  date  of  issuance.  Fair  value  of  the  common  stock  warrants  totaling  $24,000  was
recorded as a reduction to the carrying value of the loans and amortized to interest expense over the remaining term of the loans using the effective interest
method.  The  initial  fair  value  of  the  warrants  was  determined  using  the  Black-Scholes  option  pricing  model  including  weighted  average  assumptions  for
expected volatility of 80.0%, an expected life equal to the contractual term of the warrants of 10 years and a risk-free interest rate of 2.0%. During the year
ended December 31, 2018, all outstanding warrants were exercised by cashless exercise, resulting in the Company’s issuance of 46,893 shares of common
stock.

Loss on Extinguishment

In  December  2017,  the  Company  repaid  the  term  loans  prior  to  the  stated  maturity  date,  recognizing  a  loss  on  extinguishment  of  debt  totaling
$0.2  million.  This  amount  consisted  of  a  $50,000  prepayment  penalty,  a  write-off  of  $17,000  of  unamortized  discount  and  a  write-off  of  $92,000  of
unamortized  debt  issuance  costs.  The  loss  on  extinguishment  of  debt  was  recorded  as  other  income  (expense),  net  on  the  statements  of  operations  and
comprehensive loss. The write-offs of unamortized discount and unamortized debt issuance costs represent a non-cash adjustment to reconcile net income to
net cash used in operating activities on the statement of cash flows.

7. Commitments and Contingencies

Operating Lease Obligations

The Company’s operating lease obligations primarily relate to leased office and laboratory space under noncancelable operating leases. During the
year ended December 31, 2018, the Company terminated the lease agreement for its San Carlos, California office. As of December 31, 2018, the Company’s
remaining lease agreement pertains to its corporate headquarters located in Redwood City, California. The lease agreement was entered into during January
2018 and includes a contractual lease term commencing upon substantial completion and delivery of the premises which occurred in November 2018. The
base  term  of  the  lease  is  10.75  years  and  includes  an  option  to  extend  an  additional  term  of  5  years.  The  lease  agreement  required  a  security  deposit  of
$0.8 million, which the Company satisfied by establishing a letter of credit secured by restricted cash. Restricted cash is recorded in other long-term assets on
the Company’s balance sheet.

The lease agreement allows for a tenant improvement allowance of up to $1.4 million to be applied to the total cost of tenant improvements to the
leased premises. Tenant improvement allowances received are recorded as leasehold improvements with corresponding lease incentive obligations included in
accrued expenses and other current liabilities and other long-term liabilities on the Company’s balance sheets. Leasehold improvements are depreciated and
lease incentive obligations are amortized to rent expense over the term of the lease. As of December 31, 2018, unamortized lease incentive obligations totaled
$1.3 million.

In addition to the minimum future lease commitments presented below, the lease requires the Company to pay property taxes, insurance, maintenance
and repair costs. Rent expense is recognized using the straight-line method over the respective terms. The Company records a deferred rent liability calculated
as the difference between rent expense and cash rental payments. The current portion of the liability is included within accrued expenses and other current
liabilities on the Company’s balance sheets. The remaining non-current portion is classified in other long-term liabilities.

102

 
Future minimum lease payments required under operating leases are as follows (in thousands):

Fiscal Year Ending December 31,
2019
2020
2021
2022
2023
Thereafter

Total minimum future lease payments

$

$

403 
1,233 
1,271 
1,308 
1,348 
8,304 
13,867

Net rent expense was $1.0 million, $0.5 million and $0.4 for the years ended December 31, 2018, 2017 and 2016, respectively.

Purchase Obligations

The Company has entered into contractual agreements with various research and development organizations and suppliers in the normal course of its
business.  All  contracts  are  terminable,  with  varying  provisions  regarding  termination.  If  a  contract  were  to  be  terminated,  the  Company  would  only  be
obligated  for  the  products  or  services  that  the  Company  had  received  through  the  time  of  termination  as  well  as  any  non-cancelable  minimum  payments
contractually agreed upon prior to the effective date of termination. In the case of terminating a clinical trial agreement with an investigational site conducting
clinical activities on behalf of the Company, the Company would also be obligated to provide continued support for appropriate safety procedures through
completion or termination of the associated study. As of December 31, 2018, the Company had $15.6 million of non-cancelable purchase obligations under
these agreements.

In-Licensing Agreements

The  Company  has  entered  into  exclusive  and  non-exclusive,  royalty  bearing  license  agreements  with  third-parties  for  certain  intellectual  property.
Under the terms of the license agreements, the Company is obligated to pay milestone payments upon the achievement of specified clinical, regulatory and
commercial milestones. Actual amounts due under the license agreements will vary depending on factors including, but not limited to, the number of products
developed and the Company’s ability to further develop and commercialize the licensed products. The Company is also subject to future royalty payments
based  on  sales  of  the  licensed  products.  In-licensing  payments  to  third-parties  for  milestones  are  recognized  as  research  and  development  expense  in  the
period of achievement.

The  Company  recognized  $0.3  million,  zero  and  $0.3  million  of  milestone  expense  for  the  years  ended  December  31,  2018,  2017  and  2016,
respectively. Milestone payments are not creditable against royalties. As of December 31, 2018, the Company has not incurred any royalty liabilities related
to its license agreements, as product sales have not yet commenced.

Exclusive License Agreement with The Johns Hopkins University

In December 2013, the Company entered into a license agreement with The Johns Hopkins University (“JHU”) for a worldwide exclusive license to
develop, use, manufacture and commercialize covered product candidates including AK001 and AK002, which was amended in September 30, 2016. Under
the terms of the agreement, the Company has made upfront and milestone payments of $0.3 million through December 31, 2018 and may be required to make
aggregate additional milestone payments of up to $4.0 million. The Company also issued 88,887 shares of common stock as consideration under the JHU
license agreement. In addition to milestone payments, the Company is also subject to single-digit royalties to JHU based on future net sales of each licensed
therapeutic product candidate by the Company and its affiliates and sublicensees, with up to a low six-digit dollar minimum annual royalty payment.

Non-exclusive License Agreement with BioWa Inc. and Lonza Sales AG

In October 2013, the Company entered into a tripartite agreement with BioWa Inc. (“BioWa”), and Lonza Sales AG (“Lonza”), for the non-exclusive

worldwide license to develop and commercialize product candidates including

103

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AK002 that are manufactured using a technology jointly developed and owned by BioWa and Lonza. Under the terms of the agreement, the Company has
made  milestone  payments  of  $0.4  million  through  December  31,  2018  and  may  be  required  to  make  aggregate  additional  milestone  payments  of  up  to
$41.0 million. In addition to milestone payments, the Company is also subject to minimum annual commercial license fees of $40,000 per year to BioWa until
such time as BioWa receives royalty payments, as well as low single-digit royalties to BioWa and to Lonza. Royalties are based on future net sales by the
Company and its affiliates and sublicensees and vary dependent on Lonza’s participation as sole manufacturer for commercial production.

Indemnification Agreements

The  Company  has  entered  into  indemnification  agreements  with  certain  directors  and  officers  that  require  the  Company,  among  other  things,  to
indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers. To date, no such matters have arisen and
the  Company  does  not  believe  that  the  outcome  of  any  claims  under  indemnification  arrangements  will  have  a  material  adverse  effect  on  its  financial
positions, results of operations or cash flows. Accordingly, the Company has not recorded a liability related to such indemnifications at December 31, 2018.

8. Convertible Promissory Notes Payable to Related Parties, Net

In  August  2017,  the  Company  entered  into  a  note  purchase  agreement  with  existing  investors  as  related  parties  to  raise  proceeds  of  up  to
$15.0  million  via  the  issuance  of  convertible  promissory  notes  (the  “Notes”).  The  Notes  bore  interest  at  6%  per  annum  and  were  subject  to  automatic
conversion upon a subsequent qualified financing event. Additional terms included within the note purchase agreement included an option at the election of
the holder, upon maturity, to convert all outstanding principal and accrued interest into Series A convertible preferred stock at a fixed price per share, subject
to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization. The Company determined this option
represented  a  beneficial  conversion  feature  (“BCF”)  at  the  date  of  issuance  as  the  fair  value  of  the  securities  into  which  the  Notes  were  convertible  upon
maturity was greater than the effective conversion price on the date of issuance.

During the year ended December 31, 2017, the Company issued $7.5 million in Notes. The Company recorded the Notes at the principal amount
received, net of transaction costs of $86,000, with a portion of the proceeds being allocated to the BCF relative to its intrinsic value of $2.8 million. The
Company calculated the intrinsic value of the BCF as the difference between the fair value of the underlying Series A convertible preferred stock and the
effective conversion price embedded in the Notes. The BCF was initially recorded as an increase to additional paid-in capital with the offset recorded as a
discount on the Notes.

During  the  year  ended  December  31,  2017,  in  addition  to  stated  interest  of  $0.1  million,  the  Company  recognized  non-cash  interest  expense  of
$0.9 million associated with the amortization of the discounts, issuance costs and BCF. The amortization schedule was calculated using the effective interest
method through August 2018, the contractual maturity of the Notes.

In November 2017, the Notes were redeemed contemporaneously with the Company’s Series B convertible preferred stock financing. The aggregate
of the outstanding principal and accrued interest balance of $7.6 million was converted into 771,083 shares of Series B convertible preferred stock based on
the  Series  B  convertible  preferred  stock  fair  value.  The  redemption  of  the  Notes  was  accounted  for  as  a  debt  extinguishment  with  a  portion  of  the
reacquisition price allocated to the BCF and total unamortized debt discount of $60,000 written off to interest expense. The amount allocated to reacquire the
BCF was measured using the intrinsic value of the conversion option at the extinguishment date and reflected as a reduction to equity. As a result, the amount
allocated to reacquire the Notes was less than the carrying value of the Notes which resulted in a deemed capital contribution received from related parties of
$0.9 million.

Benefit from Income Taxes Related to Intra-Period Tax Allocations

The BCF associated with the convertible promissory notes to related parties resulted in a temporary difference between the carrying amount and tax
basis of the debt instruments. Upon issuance, the Company recognized the temporary difference as a deferred tax liability of $1.0 million with an offsetting
adjustment to additional paid in capital. Recognition of the deferred tax liability resulted in a reduction to the Company’s net deferred tax assets.

104

 
Accordingly, the Company reduced its existing valuation allowance by $1.0 million and recognized a corresponding income tax benefit of $1.0 million in
accordance with ASC 740-10, Accounting for Uncertainty in Income Taxes. During the year ended December 31, 2017, the deferred tax liability was reduced
in relation to the amortization of the BCF. Upon extinguishment of the Notes in November 2017, the Company wrote down the remaining $0.7 million of
deferred tax liability resulting in a net benefit from income taxes of $0.3 million for the year then ended.

9. Convertible Preferred Stock and Stockholders’ Equity (Deficit)

The Company’s amended and restated certificate of incorporation filed on July 23, 2018 authorizes the issuance of a total of 220,000,000 shares of
stock.  Of  these  shares,  200,000,000  are  designated  as  common  stock  and  20,000,000  are  designated  as  preferred  stock.  There  were  42,116,641  shares  of
common stock issued and outstanding and no shares of preferred stock issued and outstanding at December 31, 2018.

Convertible Preferred Stock

In December 2012, the Company entered into a Series A Preferred Stock Purchase Agreement (the “Series A Purchase Agreement”) with investors
under which the Company agreed to sell and investors agreed to purchase up to 14,222,218 shares of Series A convertible preferred stock at a purchase price
of $2.25 per share. Upon execution of the Series A Purchase Agreement, the Company issued 4,444,441 shares of Series A convertible preferred stock for net
cash proceeds of $9.8 million (the “Initial Closing”).

In  August  2014,  the  Company  and  its  investors  amended  the  Series  A  Purchase  Agreement,  pursuant  to  which  the  Company  agreed  to  sell  and
investors agreed to purchase up to an additional 4,444,446 shares of Series A convertible preferred stock under the same terms as the original agreement.
From August 2014 through September 2014, the Company issued 6,666,662 shares of Series A convertible preferred stock at a purchase price of $2.25 per
share for net cash proceeds of $14.9 million (the “Second Closings”).

In March 2015, the Company and its investors amended the Series A Purchase Agreement a second time, pursuant to which the Company agreed to
sell  and  investors  agreed  to  purchase  up  to  an  additional  2,222,229  shares  of  Series  A  convertible  preferred  stock  under  the  same  terms  as  the  original
agreement. Concurrent with the second amendment, the Company issued 1,310,906 shares of Series A convertible preferred stock at a purchase price of $2.25
per share for net cash proceeds of $2.9 million (the “Additional Second Closings”).

In January 2016, the Company issued 8,444,440 shares of Series A convertible preferred stock at a purchase price of $2.25 per share for net cash

proceeds of $19.0 million (the “Third Closings”).

In November 2017, the Company entered into a Series B Preferred Stock Purchase Agreement (the “Series B Purchase Agreement”) with existing as
well as new investors for the issuance of up to 10,105,181 shares of Series B convertible preferred stock at a purchase price of $9.91 per share. Upon the
execution  of  the  Series  B  Purchase  Agreement,  the  Company  issued  9,334,098  shares  of  Series  B  convertible  preferred  stock  for  net  cash  proceeds  of
$92.3  million.  In  addition,  the  Company  issued  771,083  shares  of  Series  B  convertible  preferred  stock  upon  the  conversion  of  outstanding  convertible
promissory notes to related parties, including accrued interest, in the amount of $7.6 million. See Note 8 — Convertible Promissory Notes Payable to Related
Parties, Net.

As of December 31, 2017, convertible preferred stock consisted of the following (in thousands):

`

Series A convertible preferred stock
Series B convertible preferred stock

Total

Shares
Authorized

26,083   
12,632   
38,715   

Shares Issued

and
Outstanding

Net Carrying
Value

Aggregate

Liquidation
Preference

20,866    $
10,105   
30,971    $

42,996    $
99,973   
142,969    $

46,950 
100,141 
147,091

Prior to the conversion of the Company’s convertible stock upon the Company’s IPO, the significant provisions of each series of convertible preferred

stock were as follows:

105

 
 
     
   
 
   
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Dividends  –  Holders  of  shares  of  convertible  preferred  stock  were  entitled  to  receive  noncumulative  dividends  prior  to,  and  in  preference  to  any
declaration  or  payment  of  any  dividend  on  the  common  stock  at  the  rate  of  8%  of  the  original  issue  price  of  the  applicable  series  of  convertible
preferred  stock,  when  and  if  declared  by  the  Company’s  Board  of  Directors.  After  payment  of  dividends  to  the  holders  of  shares  of  convertible
preferred  stock,  any  additional  dividends  were to  be  paid  equally  among  the  holders  of  convertible  preferred  stock  and  common  stock  on  an  as
converted basis. As of December 31, 2017 and 2016, and through the date of conversion, no dividends had been declared.

Liquidation Preference – In the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company, the holders of Series B
convertible preferred stock were entitled to receive, prior and in preference to any distribution from the assets of the Company to the holders of Series
A convertible preferred stock or common stock, a per-share amount equal to the sum of the original issue price of Series B convertible preferred stock
plus all accrued but unpaid dividends. After the payment of the full Series B liquidation preference, holders of the Series A convertible preferred
stock were entitled to receive, prior and in preference to any distribution from the assets of the Company to the holders of common stock, a per-
share amount equal to the sum of the original issue price of Series A convertible preferred stock plus all accrued but unpaid dividends. After the
payment of all preferential amounts required to be paid upon liquidation to the holders of the convertible preferred stock, the remaining assets would
have been distributed to holders of the common stock on a pro-rata basis.

Conversion – Shares of convertible preferred stock were convertible at the holder’s option into shares of common stock, on a share-for-share basis,
using a conversion rate determined by dividing the original issue price by the conversion price. The conversion rate could be adjusted upon certain
events  and  for  certain  dilutive  issuances,  splits  and  combinations.  The  initial  conversion  price  for  the  Series A  and  Series  B  convertible  preferred
stock was $2.25 and $9.91, respectively. Each share of convertible preferred stock would have been automatically converted into common stock, at
its then applicable conversion rate, upon (i) the closing of an underwritten public offering of the Company’s common stock that provides not less than
$50 million of gross proceeds at an offering price of not less than $9.91 per share of common stock, as adjusted for recapitalization or (ii) the written
request for conversion by the holders of at least a majority of the convertible preferred stock, voting together on an as converted basis.

Voting Rights – Each share of convertible preferred stock had the same voting rights as the number of shares of common stock into which it was
convertible and voted together with the holders of common stock as a single class.

Protective Provisions – The  holders  of  convertible  preferred  stock  had  certain  protective  provisions.  As  long  as  one  million  shares  of  convertible
preferred stock remained outstanding, the Company could not, without the approval of the holders of more than 50% of the then-outstanding shares
of convertible preferred stock, voting as a single class on an as-converted basis, (i) authorize or create any new class or series of equity security that is
senior  to  or  on  parity  with  the  convertible  preferred  stock,  (ii)  increase  or  decrease  the  authorized  number  of  shares  under  the  Company’s  equity
incentive plans, (iii) consummate a liquidation, dissolution or winding up of the Company, or any deemed liquidation event, (iv) redeem, purchase or
otherwise acquire shares of common stock, subject to certain exceptions, (v) change the authorized number of directors, (vi) pay or declare dividends,
or  (vii)  alter  or  change  the  rights,  preferences  or  privileges  of  the  convertible  preferred  stock  in  a  manner  that  adversely  affects  their  rights,
preferences or privileges. In addition, the holders of Series B convertible preferred stock had certain incremental protective provisions. As long as
one million shares of Series B convertible preferred stock remained outstanding, the Company could not, without the approval of the holders of at
least  60%  of  the  then-outstanding  shares  of  Series  B  convertible  preferred  stock,  voting  as  a  single  class  on  an  as-converted  basis,  (i)  increase  or
decrease the authorized number of Series B convertible preferred stock, or (ii) amend the Company’s certificate of incorporation in a manner that
adversely  affects  the  rights,  powers,  preferences  and  other  terms  of  the  Series  B  convertible  preferred  stock,  but  does  not  so  affect  the  Series  A
convertible preferred stock.

In connection with the completion of the Company’s IPO in July 2018, all the then-outstanding shares of convertible preferred stock were converted

into 30,971,627 shares of common stock and the related carrying value was reclassified to common stock and additional paid-in capital.

106

 
Common Stock

In April 2014, the Company issued to JHU 88,887 shares of common stock as consideration for intellectual property rights received by the Company
under an exclusive license agreement with JHU executed in December 2013. The Company determined the fair value of the common stock was more readily
determinable than the fair value of the services rendered. The fair value of the underlying common stock on the date of issuance was $0.39 per share, resulting
in total stock compensation expense of $34,000 recognized immediately in accordance with the terms of the agreement, which provided that the shares were
fully vested and nonforfeitable at the time of issuance. See Note 7 — Commitments and Contingencies.

Common  shares  reserved  for  future  issuance  upon  the  exercise,  issuance  or  conversion  of  the  respective  equity  instruments  are  as  follows  (in

thousands):

Series A convertible preferred stock
Series B convertible preferred stock
Stock options issued and outstanding
Stock options available for future grant
Conversion of common stock warrants
Shares issuable under 2018 Employee Stock Purchase Plan

Total

December 31,

2018

2017

—   
—   
7,811   
2,785   
—   
500   
11,096   

26,083 
12,632 
4,884 
2,346 
48 
— 
45,993

Common stockholders are entitled to dividends if and when declared by the Board of Directors subject to the prior rights of preferred stockholders.

As of December 31, 2018 and 2017, no dividends on common stock had been declared by the Board of Directors.

10. Stock-Based Compensation

Total stock-based compensation expense recognized is as follows (in thousands):

Research and development
General and administrative

Total

2018

Year Ended December 31,
2017

2016

  $

  $

1,792    $
2,778   
4,570    $

175    $
227   
402    $

108 
74 
182

No income tax benefits for stock-based compensation expense have been recognized for the years ended December 31, 2018, 2017 and 2016 as a

result of the Company’s full valuation allowance applied to net deferred tax assets and net operating loss carryforwards.

Equity Incentive Plans

In  December  2012,  the  Company  adopted  the  2012  Equity  Incentive  Plan  (the  “2012  Plan”),  as  amended  and  restated,  under  which  it  reserved
8,455,045  shares  of  common  stock  for  the  issuance  of  stock  options,  stock  appreciation  rights,  restricted  stock  and  restricted  stock  units  to  employees,
directors and consultants. Stock options granted under the 2012 Plan generally vest over four years and expire no more than 10 years from the date of grant.
As of December 31, 2017, there were 2,345,748 shares available for the Company to grant under the 2012 Plan.

107

 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
In July 2018, the Board of Directors adopted the 2018 Equity Incentive Plan (the “2018 Plan”). The 2018 Plan provides for the grant of incentive
stock options, non-statutory stock options, restricted stock awards, restricted stock units, stock appreciation rights and other stock-based awards. The 2018
Plan became effective on the business day immediately prior to the effective date of the registration statement. The Company initially  reserved  4,000,000
shares of common stock for issuance under the 2018 Plan. The number of shares of common stock that may be issued under the 2018 Plan will automatically
increase on each January 1, beginning with the fiscal year ending December 31, 2019, equal to the least of (i) 5,000,000 shares, (ii) 5% of the outstanding
shares of common stock as of the last day of the preceding fiscal year and (iii) such other amount as the Board of Directors may determine. Stock options
granted under the 2018 Plan generally vest over four years and expire no more than 10 years from the date of grant.

Following  the  IPO  and  upon  the  effectiveness  of  the  2018  Plan,  the  2012  Plan  terminated  and  no  further  awards  will  be  granted  thereunder.  All
outstanding awards under the 2012 Plan will continue to be governed by their existing terms. Any shares subject to awards granted under the 2012 Plan that,
on or after the termination of the 2012 Plan, expire or terminate and shares previously issued pursuant to awards granted under the 2012 Plan that, on or after
the termination of the 2012 Plan, are forfeited or repurchased by the Company will be transferred into the 2018 Plan. As of December 31, 2018, there were
1,325,900 shares available for the Company to grant under the 2018 Plan and the maximum number of shares that may be added to the 2018 Plan pursuant to
the preceding clause is 6,485,177 shares.

The following weighted-average assumptions were used to calculate the fair value of stock-based awards granted to employees and directors during

the periods indicated:

Risk-free interest rate
Expected volatility
Expected dividend yield
Expected term (in years)

2018

Year Ended December 31,
2017

2016

2.79%  
73.47%  
— 
6.01 

1.83%  
77.59%  
— 
6.08 

1.64%
73.22%
— 
6.02

Activity under the 2018 Plan and the 2012 Plan is summarized as follows (in thousands, except per share data):

Balance at December 31, 2017

Granted
Exercised
Forfeited

Balance at December 31, 2018

Options exercisable

Options vested and expected to vest

Options
Outstanding

Weighted-
Average
Exercise
Price

4,884    $
3,789   
(531)  
(331)  
7,811    $

3,684    $

7,770    $

0.67   
17.19   
0.65   
2.62   
8.60   

1.02   

8.57   

Weighted-
Average
Remaining
Years
8.7

Aggregate
Intrinsic
Value

  $

16,331 

8.2

7.0

8.2

  $

  $

  $

342,292 

188,812 

340,773

The  weighted-average  fair  value  of  options  granted  to  employees  and  directors  during  the  years  ended  December  31,  2018,  2017  and  2016  was

$11.05, $0.54 and $0.34 per share, respectively.

The aggregate fair value of stock options that vested during the years ended December 31, 2018, 2017 and 2016 was $1.8 million, $0.2 million and

$0.2 million, respectively.

The aggregate intrinsic value of stock options is calculated as the difference between the exercise price of the stock options and the fair value of the
Company’s common stock for those stock options that had exercise prices lower than the fair value of the Company’s common stock. Following the IPO, the
aggregate  intrinsic  value  represents  the  value  of  the  Company’s  closing  stock  price  on  the  last  trading  day  of  the  year  in  excess  of  the  weighted-average
exercise price multiplied by the number of options outstanding or exercisable. The aggregate intrinsic value of stock options exercised during the years ended
December 31, 2018, 2017 and 2016 was $ 2.0 million, $0.1 million and $12,000, respectively.

108

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
     
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
   
   
   
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The weighted-average remaining contractual life of options outstanding was 8.2 years and 8.7 years at December 31, 2018 and 2017, respectively. As
of December 31, 2018, the weighted-average remaining contractual life was 7.0 years and 8.2 years for exercisable options and vested and expected to vest
options, respectively.

During the years ended December 31, 2018 and 2017, the Company did not grant any stock options with performance-based or market-based vesting

conditions, nor did the Company grant any stock options to non-employees in exchange for services.

As of December 31, 2018, total unrecognized stock-based compensation expense relating to unvested stock options was $38.2 million. This amount is

expected to be recognized over a weighted-average period of 3.6 years.

2018 Employee Stock Purchase Plan

In July 2018, the Company’s Board of Directors and stockholders approved the 2018 Employee Stock Purchase Plan (the “2018 ESPP”). There are
500,000 shares of common stock initially reserved for issuance under the 2018 ESPP. The number of shares of common stock that may be issued under the
2018 ESPP will automatically increase on each January 1, beginning with the fiscal year ending December 31, 2019, equal to the least of (i) 1,000,000 shares,
(ii) 1% of the outstanding shares of common stock as of the last day of the immediately preceding fiscal year and (iii) such other amount determined by the
2018 ESPP administrator. Under the 2018 ESPP, employees may purchase shares of the Company’s common stock at a price per share equal to 85% of the
lower  of  the  fair  market  value  of  the  common  stock  on  the  first  trading  day  of  the  offering  period  or  on  the  exercise  date.  The  2018  ESPP  provides  for
consecutive, overlapping 24-month offering periods, each of which will include purchase periods. The first offering period commenced on July 18, 2018 and
will end on the first trading day on or before August 15, 2020. The second offering period will commence on the first trading day on or after February 15,
2019.  During  the  year  ended  December  31,  2018,  stock-based  compensation  related  to  the  2018  ESPP  was  $0.2  million.  As  of  December  31,  2018,  total
unrecognized compensation expense relating to shares to be purchased under ESPP was $0.8 million over a weighted-average period of 0.9 years.

The following weighted-average assumptions were used to calculate the fair value of ESPP shares during the year ended December 31, 2018:

Risk-free interest rate
Expected volatility
Expected dividend yield
Expected term (in years)

Restricted Common Stock

2.42%
65.92%
— 
1.24

The 2012 Plan allows for the issuance of restricted common stock and early exercise of unvested stock options in exchange for restricted common
stock. Unvested shares of restricted common stock are subject to repurchase by the Company at the original issuance price in the event of the employee’s
termination, either voluntarily or involuntarily. Consideration received for unvested stock-based awards is initially recorded as a liability and subsequently
reclassified into stockholders’ deficit as the related awards vest.

A summary of the restricted common stock activity during the year ended December 31, 2018 is as follows (in thousands, except per share data):

Balance at December 31, 2017

Vested
Repurchased

Balance at December 31, 2018

109

Number
of Shares

Weighted-
Average
Grant Date
Fair Value

104    $
(57)   $
—    $
47    $

0.43 
0.43 
— 
0.43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The fair value of restricted common stock that vested during the years ended December 31, 2018 and 2017 was $24,000 and $28,000, respectively.

As  of  December  31,  2018,  total  liabilities  related  to  unvested  shares  of  restricted  common  stock  was  $20,000.  This  amount  is  expected  to  be

recognized over a weighted-average period of 0.8 years.

11. Income Taxes

The Company’s deferred income tax assets include operating losses and tax credit carryforwards, as well as certain temporary differences between the
carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Total deferred income tax assets, net
of valuation allowance, at December 31, 2018 and 2017 were as follows (in thousands):

Deferred tax assets

Net operating loss carryforwards
Research and development credits
Accruals and reserves
Fixed and intangible assets
Total deferred tax assets

Deferred tax liabilities

Fixed and intangible assets

Total deferred tax liabilities

Net deferred tax assets before valuation allowance

Less: Valuation allowance
Net deferred tax assets

December 31,

2018

2017

  $

  $

  $
  $

  $

24,091    $
3,995   
871   
—   
28,957    $

65    $
65    $

28,892   
(28,892)  

—    $

15,769 
2,242 
50 
51 
18,112 

— 
— 
18,112 
(18,112)
—

Management has evaluated the positive and negative evidence surrounding the realizability of its deferred tax assets and has determined that it is more
likely  than  not  that  the  Company  will  not  recognize  the  benefits  of  its  federal  and  state  deferred  tax  assets,  and  as  a  result,  a  valuation  allowance  of
$28.9 million and $18.1 million has been established at December 31, 2018 and 2017, respectively. The change in the valuation allowance was $10.8 million
and $0.7 million for the years ended December 31, 2018 and 2017, respectively. The Company has incurred net operating losses (“NOL”) since inception. As
of December 31, 2018, the Company had federal and state NOL carryforwards of $101.2 million and $39.5 million, respectively, which expire beginning in
2032.  As  of  December  31,  2018,  the  Company  had  federal  and  California  research  and  other  tax  credit  carryforwards  of  $3.8  million  and  $2.5  million,
respectively. The federal tax credits expire beginning in 2033. The California tax credits can be carried forward indefinitely.

The  Internal  Revenue  Code  of  1986,  as  amended  (the  “Code”),  provides  for  a  limitation  of  the  annual  use  of  net  operating  losses  and  other  tax
attributes  (such  as  research  and  development  tax  credit  carryforwards)  following  certain  ownership  changes  defined  by  the  Code  that  could  limit  the
Company’s ability to utilize these carryforwards in the future. At this time, the Company has not completed a study to assess whether an ownership change
under Section 382 of the Code has occurred, or whether there have been multiple ownership changes since the Company’s formation. The Company may have
experienced  ownership  changes,  as  defined  by  the  Code,  as  a  result  of  past  financing  transactions  and  may  not  be  able  to  take  full  advantage  of  these
carryforwards for federal or state income tax purposes.

The  effective  tax  rate  for  the  years  ended  December  31,  2018  and  2017  is  different  from  the  federal  statutory  rate  primarily  due  to  the  valuation
allowance against deferred tax assets as a result of insufficient income. The Company’s effective tax rate differs from the federal statutory tax rate as follows:

110

 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
 
 
 
 
 
Federal statutory tax rate
Change in deferred tax asset valuation allowance
State taxes, net of federal benefit
Research and development tax credits
Remeasurement of deferreds
Beneficial conversion feature
Other
Effective tax rate

Uncertain Tax Positions

Year Ended December 31,

2018

2017

21.0%  
(24.8)%  
0.9%  
3.3%  
— 
— 
(0.4)%  
— 

34.0%
(3.0)%
0.6%
1.4%
(31.2)%
1.2%
(1.8)%
1.2%

The  Company  accounts  for  its  uncertain  tax  positions  in  accordance  with  FASB  ASC  Topic  No.  740-10,  Accounting  for  Uncertainty  in  Income
Taxes (“ASC 740-10”). Per ASC 740-10, the Company determines its uncertain tax positions based on a determination of whether and how much of a tax
benefit taken by the Company in its tax filings is more likely than not to be sustained upon examination by the relevant income tax authorities.

A reconciliation of the beginning and ending amount of unrecognized benefits is as follows (in thousands):

Balance at the beginning of the year

Increase related to current year tax positions
Increase related to prior year tax positions

Balance at the end of the year

Year Ended December 31,

2018

2017

  $

  $

1,149    $
678   
—   
1,827    $

758 
359 
32 
1,149

If recognized, gross unrecognized tax benefits would not have an impact on the Company’s effective tax rate due to the Company’s full valuation
allowance  position.  While  it  is  often  difficult  to  predict  the  final  outcome  of  any  particular  uncertain  tax  position,  the  Company  does  not  believe  that  the
amount of gross unrecognized tax benefits will change significantly in the next twelve months.

It is the Company’s policy to include penalties and interest expense related to income taxes as a component of the income tax provision as necessary.
Management determined that no accrual for interest and penalties was required at December 31, 2018 or 2017. Since the Company is in a loss carryforward
position,  it  is  generally  subject  to  examination  by  the  U.S.  federal,  state  and  local  income  tax  authorities  for  all  tax  years  in  which  a  loss  carryforward  is
available.

Benefit from Income Taxes Related to Intra-Period Tax Allocations

The beneficial conversion feature associated with the Company’s August 2017 issuance of convertible promissory notes to related parties resulted in
a temporary difference between the carrying amount and tax basis of the debt instruments. Upon issuance, the Company recognized the temporary difference
as  a  deferred  tax  liability  of  $1.0  million  with  an  offsetting  adjustment  to  additional  paid  in  capital.  Recognition  of  the  deferred  tax  liability  resulted  in  a
reduction  to  the  Company’s  net  deferred  tax  assets.  Accordingly,  the  Company  reduced  its  existing  valuation  allowance  by  $1.0  million  and  recognized  a
corresponding income tax benefit of $1.0 million in accordance with ASC 740-10. During the year ended December 31, 2017, the deferred tax liability was
reduced in relation to the amortization of the beneficial conversion feature. Upon extinguishment of the notes in November 2017, the Company wrote down
the remaining $0.7 million of deferred tax liability resulting in a net benefit from income taxes of $0.3 million for the year ended December 31, 2017.

111

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Recent Changes to U.S. Tax Law

In December 2017, the 2017 Tax Cuts and Jobs Act (the “2017 Tax Act”) was enacted and includes a broad range of provisions, many of which differ
significantly  from  those  contained  in  previous  U.S.  tax  law.  The  Company  accounts  for  changes  in  tax  law  in  accordance  with  ASC  740  which  requires
companies to recognize the effect of such changes in the period of enactment. However, the SEC staff issued Staff Accounting Bulletin 118 which will allow
companies  to  record  provisional  amounts  during  a  measurement  period  that  is  similar  to  the  measurement  period  used  when  accounting  for  business
combinations. Accordingly, the Company adjusted its deferred taxes and related valuation allowances on a provisional basis to reflect the reduction in U.S.
federal  corporate  tax  rate  from  35%  to  21%,  based  on  current  understanding  of  the  new  law. As  of  December  31,  2018,  the  Company  has  completed  its
analysis of the income effects of the 2017 Tax Act. There was no material impact on the Company’s financial statements as a result of the analysis.

12. Defined Contribution Plans

In July 2013, the Company established a Savings Incentive Match Plan (the “SIMPLE IRA plan”) for its employees, allowing for both employee and
employer contributions for those employees who meet defined minimum age and service requirements. The SIMPLE IRA plan allows participants to defer a
portion  of  their  annual  compensation  on  a  pretax  basis.  During  the  years  ended  December  31,  2017  and  2016,  the  Company  made  contributions  to  the
SIMPLE IRA plan of $0.1 million and $59,000, respectively.

In  January  2018,  the  Company  terminated  and  replaced  the  SIMPLE  IRA  with  a  defined  contribution  plan  under  Section  401(k)  of  the  Internal
Revenue Code (the “401(k) plan”). The 401(k) plan covers all employees who meet defined minimum age and service requirements. Employee contributions
are voluntary and are determined on an individual basis, limited to the maximum amount allowable under U.S. federal tax regulations. The Company makes
matching contributions of up to 4% of the eligible employees’ compensation to the 401(k) plan. During the year ended December 31, 2018, the Company
made contributions to the 401(k) plan of $0.3 million.

13. Selected Quarterly Financial Data (Unaudited)

The following tables summarize the Company’s quarterly results for the years ended December 31, 2018 and 2017 (in thousands, except per share

data):

2018
Loss from operations
Net loss
Net loss per common share, basic and diluted

2017
Loss from operations
Net loss
Net loss per common share, basic and diluted

Quarter Ended

March 31,
2018

June 30,
2018

September 30,
2018

December 31,
2018

(8,709)   $
(8,485)   $
(4.19)   $

(9,524)   $
(9,377)   $
(4.17)   $

(11,975)   $
(11,148)   $
(0.34)   $

(15,513)
(14,528)
(0.35)

Quarter Ended

March 31,
2017

June 30,
2017

September 30,
2017

December 31,
2017

(4,977)   $
(5,056)   $
(3.56)   $

(4,598)   $
(4,692)   $
(3.18)   $

(6,233)   $
(5,920)   $
(3.60)   $

(6,446)
(7,884)
(4.08)

  $
  $
  $

  $
  $
  $

Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.

None.

112

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Item 9A. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

As  of  December  31,  2018,  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 defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act. Disclosure controls and procedures
include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or
submits  under  the  Exchange  Act  is  accumulated  and  communicated  to  management,  including  our  principal  executive  and  principal  financial  officers,  as
appropriate to allow timely decisions regarding required disclosure.

Management  recognizes  that  any  controls  and  procedures,  no  matter  how  well  designed  and  operated,  can  provide  only  reasonable  assurance  of
achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.
Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of December 31, 2018, the design and operation of our
disclosure controls and procedures were effective at the reasonable assurance level.

Management’s Annual Report on Internal Control over Financial Reporting

This annual report does not include a report of management’s assessment regarding internal control over financial reporting or an attestation report of

our registered public accounting firm due to a transition period established by rules of the SEC for newly public companies.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting identified in connection with the evaluation required by Rule 13a-15(d) and 15d-
15(d) of the Exchange Act that occurred during the fourth quarter of 2018 that has materially affected, or is reasonably likely to materially affect, our internal
control over financial reporting.

Item 9B. Other Information.

None.

113

 
Item 10. Directors, Executive Officers and Corporate Governance.

PART III

The  information  required  under  this  item  is  incorporated  herein  by  reference  to  our  definitive  proxy  statement  pursuant  to  regulation  14A,  or  the
Proxy Statement, which proxy statement is expected to be filed with Securities and Exchange Commission not later than 120 days after the close of our fiscal
year ended December 31, 2018.

Item 11. Executive Compensation.

The information required by this item will be set forth in the Proxy Statement and is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information required by this item will be set forth in the Proxy Statement and is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions, and Director Independence.

The information required by this item will be set forth in the Proxy Statement and is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services.

The information required by this item will be set forth in the Proxy Statement and is incorporated herein by reference.

114

 
Item 15. Exhibits, Financial Statement Schedules.

(a)

The following documents are filed as part of this Annual Report on Form 10-K:

(1)

Financial Statements

PART IV

See Index to Financial Statements included in Part II Item 8 of this Annual Report on Form 10-K

(2)

Financial Statement Schedules

All schedules are omitted because they are not applicable or the required information is shown in the financial statements or notes thereto.

(3)

List of Exhibits required by Item 601 of Regulation S-K

  Amended and Restated Certificate of Incorporation of the Registrant.

Description

Form

8-K

001-38582

  Amended and Restated Bylaws of the Registrant.

  Specimen common stock certificate of the Registrant.

8-K  

001-38582

S-1/A  

333-225836  

Incorporated by Reference

File No.

  Number  

Filing Date

3.1

3.2

4.2

7/24/2018

7/24/2018

7/09/2018

10.1+

  Form of Indemnification Agreement between the Registrant and each of its directors

and executive officers.

  2012 Equity Incentive Plan, as amended, and forms of agreement thereunder.

S-1

S-1

333-225836  

10.1+  

6/22/2018

333-225836  

10.2+  

6/22/2018

  2018 Equity Incentive Plan and forms of agreements thereunder.

S-1/A  

333-225836  

10.3+  

7/09/2018

  2018 Employee Stock Purchase Plan.

S-1/A  

333-225836  

10.4

7/09/2018

  Employment Letter between the Registrant and Robert Alexander, Ph.D.

S-1/A  

333-225836  

10.5+  

7/09/2018

  Employment Letter between the Registrant and Adam Tomasi, Ph.D.

S-1/A  

333-225836  

10.6+  

7/09/2018

  Employment Letter between the Registrant and Henrik Rasmussen, M.D., Ph.D.

S-1/A  

333-225836  

10.7+  

7/09/2018

  Executive Incentive Compensation Plan.

  Outside Director Compensation Policy.

  Change in Control and Severance Policy.

S-1

333-225836  

10.9+  

6/22/2018

S-1/A  

333-225836

  10.10+  

7/09/2018

S-1/A  

333-225836

  10.11+  

7/09/2018

  Lease Agreement between the Registrant and Westport Office Park, LLC, dated

S-1

333-225836  

10.12  

6/22/2018

January 4, 2018, as amended.

10.14#

  Non-exclusive License Agreement between the Registrant, BioWa, Inc. and Lonza

S-1/A  

333-225836   10.14#  

7/17/2018

Sales AG, dated October 31, 2013.

10.15#

  Amended and Restated Exclusive License Agreement between the Registrant and the

S-1/A  

333-225836   10.15#  

7/17/2018

Johns Hopkins University, dated September 30, 2016.

115

Exhibit
Number

3.1

3.2

4.2

10.2+

10.3+

10.4+

10.5+

10.6+

10.7+

10.9+

10.10+

10.11+

10.12

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
23.1*

  Consent of Independent Registered Public Accounting Firm.

31.1*

  Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-

14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302
of the Sarbanes-Oxley Act of 2002.

31.2*

  Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a)
under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of
the Sarbanes-Oxley Act of 2002.

32.1**

  Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as

Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2**

  Certification of Principal 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 Label Linkbase Document

101.PRE

  XBRL Taxonomy Extension Presentation Linkbase Document

*
**
+
#

Filed herewith.
Furnished herewith.
Indicated management contract or compensatory plan.
Portions  of  this  exhibit  (indicated  by  asterisks)  have  been  omitted  pursuant  to  a  request  for  confidential  treatment  and  this  exhibit  has  been  filed
separately with the SEC.

Item 16. Form 10-K Summary

None.

116

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to

be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

Date: March 14, 2019

ALLAKOS INC.

By:

/s/ Robert Alexander
Robert Alexander, Ph.D.
President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this Report has been signed below by the following persons on

behalf of the Registrant in the capacities and on the dates indicated.

Name

/s/ Robert Alexander
Robert Alexander, Ph.D.

/s/ Adam Tomasi
Adam Tomasi, Ph.D.

/s/ Daniel Janney
Daniel Janney

/s/ Robert Andreatta
Robert Andreatta

/s/ Steve James
Steve James

/s/ John McKearn
John McKearn, Ph.D.

/s/ Paul Walker
Paul Walker

Title

  President, Chief Executive Officer and Director
  (Principal Executive Officer)

Chief Operating Officer, Chief Financial Officer and
Secretary

  (Principal Financial and Accounting Officer)

  Chair of the Board

  Director

  Director

  Director

  Director

117

Date

March 14, 2019

March 14, 2019

March 14, 2019

March 14, 2019

March 14, 2019

March 14, 2019

March 14, 2019

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
 
 
 
 
 
 
 
 
 
 
Consent of Independent Registered Public Accounting Firm

Exhibit 23.1

We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-226247) pertaining to the 2018 Equity Incentive Plan, the 2018
Employee Stock Purchase Plan and the 2012 Equity Incentive Plan of Allakos Inc. of our report dated March 14, 2019, with respect to the financial
statements of Allakos Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2018.

/s/ Ernst & Young LLP

Redwood City, California
March 14, 2019

 
CERTIFICATION PURSUANT TO
RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.1

I, Robert Alexander, certify that:

1.

2.

3.

4.

I have reviewed this Annual Report on Form 10-K of Allakos Inc.;

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;

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;

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)

(b)

(c)

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;

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

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)

(b)

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

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 14, 2019

By:

/s/ Robert Alexander
Robert Alexander
President and Chief Executive Officer
(Principal Executive Officer)

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CERTIFICATION PURSUANT TO
RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.2

I, Adam Tomasi, certify that:

1.

2.

3.

4.

I have reviewed this Annual Report on Form 10-K of Allakos Inc.;

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;

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;

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)

(b)

(c)

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;

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

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)

(b)

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

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 14, 2019

By:

/s/ Adam Tomasi
Adam Tomasi
Chief Operating Officer, Chief Financial Officer and Secretary
(Principal Financial and Accounting Officer)

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Allakos Inc. (the “Company”) on Form 10-K for the year ended December 31, 2018 as filed with the
Securities and Exchange Commission on the date hereof (the “Report”), I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, that:

(1)

(2)

The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the
Company.

Date: March 14, 2019

By:

/s/ Robert Alexander
Robert Alexander
President and Chief Executive Officer
(Principal Executive Officer)

 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Allakos Inc. (the “Company”) on Form 10-K for the year ended December 31, 2018 as filed with the
Securities and Exchange Commission on the date hereof (the “Report”), I hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, that:

(1)

(2)

The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the
Company.

Date: March 14, 2019

By:

/s/ Adam Tomasi
Adam Tomasi
Chief Operating Officer, Chief Financial Officer and Secretary
(Principal Financial and Accounting Officer)