You should read the following discussion and analysis of our financial condition and results of operations in conjunction with our financial statements and related notes included in Part II, Item 8 of this Annual Report on Form 10-K.



This Annual Report on Form 10-K contains forward-looking statements within the
meaning of Section 27A of the Securities Exchange Act of 1933, as amended, or
the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as
amended, or the Exchange Act. Forward-looking statements are identified by words
such as "believe," "will," "may," "estimate," "continue," "anticipate,"
"intend," "should," "plan," "expect," "predict," "could," "potentially" or the
negative of these terms or similar expressions. You should read these statements
carefully because they discuss future expectations, contain projections of
future results of operations or financial condition, or state other
"forward-looking" information. These statements relate to our future plans,
objectives, expectations, intentions and financial performance and the
assumptions that underlie these statements. These forward-looking statements are
subject to certain risks and uncertainties that could cause actual results to
differ materially from those anticipated in the forward-looking statements.
Factors that might cause such a difference include, but are not limited to,
those discussed in this report in Part I, Item 1A - "Risk Factors," and
elsewhere in this report. Forward-looking statements are based on our
management's beliefs and assumptions and on information currently available to
our management. These statements, like all statements in this report, speak only
as of their date, and we undertake no obligation to update or revise these
statements in light of future developments. We caution investors that our
business and financial performance are subject to substantial risks and
uncertainties.



Overview



We are a clinical-stage immuno-oncology company focused on developing novel
therapies to activate macrophages in the fight against cancer. We founded Forty
Seven based on the insight that blocking CD47, a key signaling molecule that is
overexpressed on cancer cells, renders tumors susceptible to macrophages. By
harnessing macrophages, we believe that our lead product candidate, magrolimab
(formerly known as 5F9), can transform the treatment of cancer. Magrolimab has
demonstrated promising activity in multiple Phase 1b/2 clinical trials in which
we have treated over 400 cancer patients with solid or hematologic tumors. In
March 2020, Forty Seven entered into a definitive agreement to be acquired by
Gilead Sciences, Inc., which is expected to close during the second quarter of
2020.



We are also preparing to advance two additional investigational compounds into
clinical testing. FSI-174, an anti-cKIT antibody, is being developed alone or in
combination with magrolimab as a novel, all-antibody conditioning regimen to
address the limitations of current stem cell transplantation conditioning
regimens. FSI-189, an anti-SIRP? antibody, is being developed for the treatment
of cancer, as well as certain non-oncology conditions, including transplantation
conditioning.



We focus our efforts on targeting the CD47 pathway as a way to engage
macrophages in fighting tumors. Macrophages function as first responders,
swallowing foreign and abnormal cells, including cancer cells, and mobilizing
other components of the immune system including T cells and antibodies. Cancer
cells use CD47, a "don't eat me" signal, in order to evade detection by the
immune system and subsequent destruction by macrophages. Overexpression of CD47
is common to nearly all types of tumors including myelodysplastic syndrome, or
MDS, acute myelogenous leukemia, or AML, Non-Hodgkin's lymphoma, or NHL,
colorectal cancer, or CRC, gastric cancer, lung cancer, and ovarian cancer with
overexpression correlating with poor prognosis in many of these cancers. Despite
the central role of macrophages as cell-eating scavengers and first responders,
the pharmaceutical industry is only beginning to bring this key group of cells
into the fight against cancer.



Our company was founded in 2014 by leading scientists at Stanford University who
uncovered the fundamental role of CD47 in cancer evasion. Preclinical work
performed in the laboratory of our co-founder, Irving L. Weissman, at Stanford
University and at Forty Seven demonstrated that:

• Blocking the CD47 "don't eat me" signaling pathway leads to elimination

of many types of tumors and increased survival;

• Boosting an "eat me" signal found on cancer cells using therapeutic


          antibodies results in a synergistic effect with blocking CD47;


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• Increasing "eat me" signal expression on cancer cells through cytotoxic

and chemotherapeutic agents like azacitidine, which is synergistic with

blocking CD47; and

• Macrophages digest cancer cells in a process called phagocytosis and

present tumor-specific antigens that can activate T cells against the

cancer, thus creating the potential for synergy with T cell checkpoint


          inhibitors.




Our lead product candidate, magrolimab, is a humanized IgG4 subclass monoclonal
antibody against CD47 that is designed to interfere with recognition of CD47 by
the SIRP? receptor on macrophages, thus blocking the "don't eat me" signal. The
design of magrolimab, combined with our proprietary dosing regimen, overcomes
the toxicity limitations of previously tested anti-CD47 therapies developed by
others. Across all study populations, magrolimab has been well tolerated with no
maximum tolerated dose, or MTD, observed in any study despite dosing up to 45
mg/kg. The most common treatment-associated effects observed to date were the
expected CD47-mechanism-based effects on red blood cells, which led to a
temporary and reversible anemia. Other reported treatment-related adverse events
include infusion reactions, headache, fatigue, chills, fever and nausea. The
majority of these adverse events were mild to moderate in severity and were
generally easily managed. To date, there are no approved therapies that target
the CD47 checkpoint of the innate immune system.



The targeting of CD47 to make cancer cells susceptible to macrophages, a
component of the innate immune system, is analogous to the approach that has
been applied with checkpoint inhibitors and T cells, a component of the adaptive
immune system. Since their introduction in 2011, T cell checkpoint inhibitors
have become frontline therapies for certain cancers and we estimate that they
generated over $22 billion in sales in 2019. Despite the success of T cell
checkpoint inhibitors, these therapies have been shown to be effective only in a
subset of tumors, highlighting the need for additional therapies. Similar to the
way cancer cells overexpress programmed death-ligand 1, or PD-L1, to avoid
attack by T cells, cancer cells overexpress CD47 as a way to avoid destruction
by macrophages. We believe targeting CD47 represents a compelling and analogous
approach.



Since our inception in 2014, we have devoted most of our resources to
identifying and developing magrolimab, advancing our preclinical programs,
conducting clinical trials and providing general and administrative support for
these operations. To date, we have not generated any revenue from product sales.
In July 2019, we recognized $15.7 million of license revenue under a license and
collaboration arrangement. We have funded our operations to date primarily from
the issuance and sales of our capital stock and the receipt of government and
private grants and licensing revenue. We are eligible to receive up to $22.4
million in grants from the California Institute for Regenerative Medicine, or
CIRM, and the Leukemia and Lymphoma Society, or LLS, of which $17.0 million has
been received through December 31, 2019.



We have incurred net losses in each year since inception. Our net losses were
$87.6 and $70.4 million for the years ended December 31, 2019 and 2018,
respectively. As of December 31, 2019, we had an accumulated deficit of $227.4
million. Substantially all of our net losses have resulted from costs incurred
in connection with our research and development programs and from general and
administrative costs associated with our operations. We expect to continue to
incur significant expenses and increasing operating losses over at least the
next several years. We expect our expenses will increase substantially in
connection with our ongoing activities, as we:

  • advance product candidates through clinical trials;


  • pursue regulatory approval of product candidates;


  • operate as a public company;


  • continue our preclinical programs and clinical development efforts;

• continue research activities for the discovery of new product candidates; and




  • manufacture supplies for our preclinical studies and clinical trials.




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Merger Agreement





On March 1, 2020, we entered into the Merger Agreement with Gilead, pursuant to
which we agreed to be acquired by Gilead in an all-cash transaction for an
approximate value of $4.9 billion. On March 10, 2020, in accordance with the
terms of the Merger Agreement, Purchaser commenced a tender offer, to acquire
all of our outstanding shares of common stock, $0.0001 par value per share, at a
price of $95.50 per share, to be paid net to the seller in cash, without
interest and subject to any required withholding of taxes, upon the terms and
conditions described in the Offer. The consummation of Purchaser's pending Offer
is subject to certain conditions, including the tender of shares representing at
least one more than 50% of the total number of our shares of common stock
outstanding at the time of the expiration of the Offer, the expiration or
termination of the waiting period (or any extension thereof) applicable to the
Offer under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
amended, and other customary conditions. The Merger Agreement provides, among
other things, that following the consummation of the Offer and subject to the
satisfaction or waiver of the conditions set forth in the Merger Agreement and
in accordance with the relevant provisions of the DGCL and other applicable law,
Purchaser will merge with and into the Company, the separate existence of
Purchaser will cease and the Company will continue as the surviving corporation
and as a wholly owned subsidiary of Parent. We expect the Merger to close during
the second quarter of 2020, subject to the regulatory approvals and other
customary closing conditions described above and in the Merger Agreement.

Additional information about the Proposed Transaction is set forth in our filings with the Securities and Exchange Commission, or the SEC.

Components of Results of Operations

License Revenue





To date, we have not generated any revenue from product sales and do not expect
to generate any revenue from product sales for the foreseeable future. Under the
exclusive license and collaboration agreement with Ono Pharmaceutical Co., Ltd.,
or the Ono Agreement, we have recognized as revenue the upfront nonrefundable
payment related to a license grant. Under the Ono Agreement, we are eligible to
receive milestone payments. These milestone payments are fully constrained, and
not recognized currently in revenue, due to the uncertainty in achieving the
milestones. We are also eligible to receive royalty payments related to the Ono
Agreement which would be recognized as the underlying product sales occur.

Research and Development Expenses

Research and development expenses consist primarily of costs incurred for the development of our lead product candidate, magrolimab, and other product candidates, which include:





     •    expenses incurred under agreements with third-party contract
          organizations and investigative clinical trial sites that conduct

research and development activities on our behalf, and consultants;

• costs related to production of clinical materials, including fees paid

to contract manufacturers;

• laboratory and vendor expenses related to the execution of preclinical


          and clinical trials;


     •    employee-related expenses, which include salaries, benefits and
          stock-based compensation; and


     •    facilities and other expenses, which include expenses for rent and
          maintenance of facilities, depreciation and amortization expense and
          other supplies.




We expense all research and development costs in the periods in which they are
incurred. Costs for certain development activities are recognized based on an
evaluation of the progress to completion of specific tasks using information and
data provided to us by our vendors, collaborators and third-party service
providers. The costs of intangible assets that are purchased from others for a
particular research and development project and that have no alternative future
uses are considered research and development costs and are expensed when
incurred. Nonrefundable advance payments for goods or services to be received in
future periods for use in research and development activities are deferred and
capitalized. The capitalized amounts are then expensed as the related goods are
delivered and as services are performed.



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The largest component of our operating expenses has historically been our
investment in research and development activities related to the clinical
development of our lead product candidate, magrolimab, as well as other product
candidates in preclinical development including FSI-189, an anti-SIRP? antibody,
and FSI-174, an anti-cKIT antibody. We recognize the funds from research and
development grants as a reduction of research and development expense when the
related eligible research costs are incurred. Research and development grants
received during 2019 and 2018 totaled $3.5 million and $7.6 million,
respectively. In January 2018, we entered into a clinical trial collaboration
and supply agreement with Ares Trading S.A, a subsidiary of Merck KGaA or Merck.
Reimbursement under this collaboration agreement is recorded as a reduction to
research and development expense. For the year ended December 31, 2019 and 2018,
we recognized $1.7 million and $1.2 million, respectively, as a reduction to
research and development expenses under this collaboration agreement. We entered
into the Ono Agreement in July 2019 and a research collaboration agreement with
bluebird bio, Inc., or bluebird in September 2019. Reimbursement under both
collaboration agreements is recorded as a reduction to research and development
expense. For the year ended December 31, 2019, we recognized $0.9 million and
$1.2 million as a reduction to research and development expenses under the Ono
Agreement and the bluebird agreement, respectively.



We expect our research and development expenses to increase substantially for
the foreseeable future as we continue to invest in research and development
activities related to developing our product candidates, as our product
candidates advance into later stages of development, and as we begin to conduct
larger clinical trials. The process of conducting the necessary clinical
research to obtain regulatory approval is costly and time-consuming, and the
successful development of our product candidates is highly uncertain. As a
result, we are unable to determine the duration and completion costs of our
research and development projects or when and to what extent we will generate
revenue from the commercialization and sale of any of our product candidates.

General and Administrative Expenses





General and administrative expenses consist primarily of personnel-related
costs, facilities costs, depreciation and amortization expenses and professional
services expenses, including legal, human resources, audit and accounting
services. Personnel-related costs consist of salaries, benefits and stock-based
compensation. Facilities costs consist of rent and maintenance of facilities. We
expect our general and administrative expenses to increase for the foreseeable
future due to anticipated increases in headcount to advance our product
candidates and as a result of operating as a public company, including expenses
related to compliance with the rules and regulations of the SEC, the Nasdaq
Global Select Market, additional insurance expenses, investor relations
activities and other administrative and professional services.

Remeasurement Loss on Contingent Repayment Obligation





Under the LLS agreement, as amended, we are required to make contingent
milestone payments dependent upon the outcome of our research and development
activities. The contingent repayment obligation represents the
probability-adjusted and discounted future contingent milestone payments and is
subject to remeasurement on a recurring basis at each reporting period.
Remeasurement gains or losses arise from the revaluation of our contingent
repayment obligation.

Interest and Other Income, Net

Interest and other income, net consists of interest earned on our cash equivalents and short-term investments and foreign currency transaction gains and losses incurred during the period.


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Results of Operations

Years Ended December 31, 2019 and 2018





                                                   Year Ended December 31,
                                                                                   Increase/
                                                    2019              2018         (Decrease)
                                                                (in thousands)
License revenue                                 $     15,678       $        -     $     15,678
Operating expenses:
Research and development                              83,792           56,673           27,119
General and administrative                            20,418           15,432            4,986
Total operating expenses                             104,210           72,105           32,105
Loss from operations                                 (88,532 )        (72,105 )        (16,427 )
Other income (expenses):
Remeasurement loss on contingent repayment
obligation                                            (2,554 )           (331 )         (2,223 )
Interest and other income, net                         3,465            2,066            1,399
Net loss                                        $    (87,621 )     $  (70,370 )   $    (17,251 )




License Revenue



License revenue increased $15.7 million compared to the year ended December 31,
2018. The increase in license revenue was due to the license granted under the
Ono Agreement.

Research and Development Expenses

The following tables summarize the period-over-period changes in research and development expenses for the periods indicated:





                                                   Year Ended December 31,
                                                                                    Increase/
                                                    2019              2018          (Decrease)
                                                                (in thousands)
Product-specific costs:
Magrolimab and other product candidates         $     57,617       $    40,449     $     17,168
Grant funding and cost share reimbursement            (6,864 )          (9,179 )          2,315
Non product-specific costs:
Stock-based compensation                               1,874             1,193              681
Personnel-related                                     12,303             8,224            4,079
Other preclinical programs                            18,249             7,162           11,087
License fees                                             613             8,824           (8,211 )

Total research and development expenses $ 83,792 $ 56,673 $ 27,119






Research and development expenses increased by $27.1 million, or 48%, to $83.8
million in 2019 from $56.7 million in 2018. The increase was primarily due to a
$17.2 million increase in third party costs related to advancing our current
clinical programs focused on our lead product candidate, magrolimab, and
associated contract manufacturing costs, a $11.1 million increase in our other
preclinical and discovery programs costs as we expanded our immuno-oncology
efforts, a $4.8 million increase in personnel-related costs, including
stock-based compensation, and a $2.3 million increase in expenses related to a
decrease in grant funding reimbursement due to decreased funding recognized
under the CIRM and LLS grants partially offset by increased cost share
reimbursement under the Merck, bluebird and Ono collaboration agreements. These
increases were partially offset by a $8.2 million decrease in our license fees
primarily due to the upfront license fees related to the BliNK asset purchase
and Synthon license agreements recognized in 2018.

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General and Administrative Expenses



General and administrative expenses increased by $5.0 million, or 32%, to $20.4
million in 2019 from $15.4 million in 2018. The increase was primarily due to a
$3.0 million increase in personnel-related costs driven by an increase in
headcount, a $1.0 million increase in accounting and consulting expenses
incurred in connection with operating as a public company and a $0.9 million
increase in directors and officer's insurance expense.

Remeasurement Loss on Contingent Repayment Obligation



Remeasurement loss on the contingent repayment obligation increased by $2.2
million to $2.5 million in 2019 from $0.3 million in 2018, primarily driven by a
higher estimated probability of success related to our clinical programs in MDS,
DLBCL, AML and other pipeline programs, such as FSI-174.

Interest and Other Income, Net



Interest and other income, net increased by $1.4 million to $3.4 million in 2019
from $2.0 million in 2018. The increase was due to a $1.0 million increase in
interest income from the investment of the net proceeds from our public
offerings, and a $0.4 million increase in foreign currency gains primarily
related to gains arising from the Ono Agreement.

Liquidity, Capital Resources and Plan of Operations

To date, we have incurred significant net losses and negative cash flows from operations. As of December 31, 2019, we had $329.1 million in cash, cash equivalents and short-term investments.



In connection with our initial public offering, which closed on July 2, 2018, we
issued and sold an aggregate of 8,090,250 shares of common stock (inclusive of
1,055,250 shares of common stock from the exercise of the over-allotment option
granted to the underwriters) at a price of $16.00 per share. We received
proceeds from the offering of $116.3 million, net of underwriting discounts and
commissions and estimated offering costs.

In July 2019, we completed an underwritten public offering of 10,781,250 shares
of our common stock, including 1,406,250 shares sold pursuant to the
underwriters' exercise of their option to purchase additional shares, at a
public offering price of $8.00 per share. We received proceeds from the offering
of $80.5 million, net of underwriting discounts and commissions and offering
costs.

In July 2019, we entered into the Ono Agreement. Under the Ono Agreement, we received a one-time upfront nonrefundable payment from Ono of 1.7 billion Japanese Yen.



In December 2019, we completed an additional underwritten public offering of
5,589,000 shares of our common stock, including 729,000 shares sold pursuant to
the underwriters' exercise of their option to purchase additional shares, at a
public offering price of $35.00 per share. We received proceeds from the
offering of $183.6 million, net of underwriting discounts and commissions and
offering costs.

Our primary use of cash is to fund operating expenses, which consist primarily
of research and development expenditures related to our lead product candidate,
magrolimab, other product candidates, preclinical and discovery programs, and to
a lesser extent, general and administrative expenditures. Cash used to fund
operating expenses is impacted by the timing of when we pay these expenses, as
reflected in the change in our outstanding accounts payable and accrued
expenses.

Based upon our current operating plan and assumptions, we believe that our
existing cash, cash equivalents and short-term investments, including the
proceeds from our recently completed public offerings and upfront payment from
Ono, will enable us to meet our financial needs into the first quarter of 2022.
We have based this estimate on assumptions that may prove to be wrong, and we
could utilize our available capital resources sooner than we currently expect.
We will continue to require additional financing to advance our current product
candidates through clinical development, to develop, acquire or in-license other
potential product candidates and to fund operations for the foreseeable future.
We will continue to seek funds through equity or debt financings, collaborative
or other arrangements with corporate sources, or through other sources of
financing. Adequate additional funding may not be available to us on acceptable
terms, or at all. Any failure to raise capital as and when needed could have a
negative impact on our financial condition and on our ability to pursue our
business plans and strategies.

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Further, our operating plans may change, and we may need additional funds to
meet operational needs and capital requirements for clinical trials and other
research and development activities. We currently have no credit facility or
committed sources of capital. Because of the numerous risks and uncertainties
associated with the development and commercialization of our product candidates,
we are unable to estimate the amounts of increased capital outlays and operating
expenditures associated with our current and anticipated product development
programs.

If we need to raise additional capital to fund our operations, funding may not
be available to us on acceptable terms, or at all. If we are unable to obtain
adequate financing when needed, we may have to delay, reduce the scope of or
suspend one or more of our clinical trials, research and development programs or
commercialization efforts. We may seek to raise any necessary additional capital
through a combination of public or private equity offerings, debt financings and
collaborations or licensing arrangements. If we do raise additional capital
through public or private equity offerings, the ownership interest of our
existing stockholders will be diluted, and the terms of these securities may
include liquidation or other preferences that adversely affect our stockholders'
rights. If we raise additional capital through debt financing, we may be subject
to covenants limiting or restricting our ability to take specific actions, such
as incurring additional debt, making capital expenditures or declaring
dividends. If we are unable to raise capital, we will need to delay, reduce or
terminate planned activities to reduce costs. Doing so will likely harm our
ability to execute our business plans.

Cash Flows

The following table summarizes our cash flows for the periods indicated:





                                                          Year Ended December 31,
                                                            2019             2018
                                                               (in thousands)
 Cash used in operating activities                      $    (78,113 )

$ (66,017 )


 Cash provided by (used in) investing activities              13,777        

(64,189 )


 Cash provided by financing activities                       267,313        

116,626

Net increase (decrease) in cash and cash equivalents $ 202,977 $ (13,580 )






Operating Activities

In 2019, cash used in operating activities of $78.1 million was attributable to
a net loss of $87.6 million, partially offset by $8.0 million in non-cash
charges and a net change of $1.5 million in net operating assets and
liabilities. The non-cash charges consisted primarily of stock-based
compensation of $5.0 million, change in fair value of the LLS contingent
repayment obligation of $2.6 million, amortization of right-of-use assets of
$1.1 million and depreciation and amortization of $0.5 million, partially offset
by $1.0 million related to the accretion of discounts on marketable securities.
The change in operating assets and liabilities was due to a $3.9 million
increase in accounts payable and accrued liabilities resulting from the timing
of payments and a $1.0 million increase in deferred grant funding due to receipt
of the research grant funding payments. These changes were partially offset by a
$1.6 million increase in prepaid expense and other current assets driven by
additional prepayments made for research and development activities and other
receivables, a $1.2 million decrease in lease related liabilities due to lease
payments and a $0.6 million increase in other noncurrent assets driven by timing
of the research and development prepayments.

In 2018, cash used in operating activities of $66.0 million was attributable to
a net loss of $70.4 million, partially offset by a net change of $1.0 million in
net operating assets and liabilities, and a net change of $3.4 million in
non-cash charges. The non-cash charges consisted primarily of stock-based
compensation of $3.4 million, depreciation and amortization of $0.4 million, a
change in fair value of the contingent repayment obligation of $0.3 million,
offset by the net accretion of discount on marketable securities of $0.7
million. The change in operating assets and liabilities was primarily due to a
$5.1 million increase in accounts payable and accrued liabilities resulting from
increases in our research and development activities and accrued compensation.
This was partially offset by a $2.4 million increase in prepaid expense and
other current assets and a $0.7 million increase in other assets, driven by the
timing of prepayments made for research and development activities, and a $1.0
million decrease in deferred grant funding due to research grant awards being
recognized as eligible research costs were incurred.

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Investing Activities



In 2019, net cash provided by investing activities was $13.8 million related to
the proceeds from maturities of investments of $176.2 million and the proceeds
from the sale of investments of $4.0 million, partially offset by purchases of
investments of $166.0 million and purchases of property and equipment of $0.4
million.

In 2018, cash used in investing activities was $64.2 million related to
purchases of short-term investments of $142.0 million and purchases of property
and equipment of $0.4 million, partially offset by the maturity of investments
of $78.2 million.

Financing Activities

In 2019, cash provided by financing activities was $267.3 million, and was
primarily related to the net proceeds from public offerings of our common stock
of $264.3 million, the proceeds received from the exercise of stock options of
$2.1 million and the proceeds received from the issuance of common stock upon
ESPP purchase of $0.9 million.

In 2018, cash provided by financing activities was $116.6 million related to the
net proceeds of $116.3 million received from the initial public offering and
$0.3 million from the issuance of common stock in connection with stock option
exercises.

Contractual Obligations and Commitments



The following table summarizes our commitments to settle contractual obligations
as of December 31, 2019:



                                                                Payments Due By Period
                                                    Less than                                        More than
                                       Total         1 Year         1-3 Years       3-5 Years         5 Years
                                                                    (in thousands)
Financial Assets
Operating lease obligation            $  2,449     $     1,585     $       864     $          -     $          -
Contract manufacturing obligations      15,400          10,250           5,150                -                -
Total                                 $ 17,849     $    11,835     $     6,014     $          -     $          -




We enter into agreements in the normal course of business with contract research
organizations for clinical trials and with vendors for preclinical studies and
other services and products for operating purposes which are cancelable at any
time by us, generally upon 30 days prior written notice. These payments are not
included in this table of contractual obligations.

In addition, we have not included the potential contingent payment obligations
from the following agreements described below in this table of contractual
obligations because the timing and likelihood of such payments is not known.
These payments generally become due and payable only upon achievement of certain
development, regulatory or commercial milestones.

Asset Purchase Agreement



In June 2018, we entered into an asset purchase agreement with BliNK Biomedical
SAS, or BliNK, pursuant to which we acquired all of BliNK's assets relating to
its research and development program for antibodies directed against CD47. These
assets predominately consist of certain patents and patent applications of BliNK
and BliNK's opposition at the EPO against the third-party patent European Patent
No. EP 2 282 772 as an acquired business asset. We paid BliNK an initial upfront
payment of $2.0 million and an additional $1.0 million upon the completion of
certain agreed activities by BliNK relating to the transfer of the assets to us.
For each product incorporating a program antibody that satisfies certain
clinical and commercial milestones in the United States, the European Union and
Japan, we will be required to make milestone payments of up to $43.0 million.
Until we receive marketing approval for the first product, or for so long as we
continue development of product candidates related to the acquired intellectual
property, we are required to pay BliNK a minimum annual fee of $0.3 million. In
addition, we will pay BliNK a royalty of a tiered single digit percentage on net
sales of any approved products. We have the right to buy out our royalty
obligations in full by paying BliNK an agreed lump sum amount prior to the
occurrence of certain defined events.

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License Agreements



In July 2018, we entered into a settlement and license agreement with Synthon
Biopharmaceuticals B.V., or Synthon. Under the agreement, we agreed to
discontinue our ongoing oppositions and challenges at the European Patent
Office, or the EPO, and the U.S. Patent and Trademark Office, or the USPTO,
directed towards certain patents licensed by Synthon from Stichting Sanquin
Bloedvoorziening, or SSB, that relate to the use of anti-CD47 products in
combination with other antibodies to treat cancer. We also agreed to request the
withdrawal of such proceedings with the USPTO and EPO. In return Synthon agreed
to grant us a non-exclusive, worldwide sublicense to certain patents they have
licensed from SSB, including the SSB patents we were opposing at the USPTO and
EPO to commercialize a single anti-CD47 product (such as magrolimab or an
alternate anti-CD47 product) to treat cancer in combination with other
antibodies.

In December 2016 and April 2017, we filed third party observations in an
opposition proceeding in the EPO with respect to European Patent No. EP 2 282
772 and in January 2018, petitioned for inter partes review of U.S. Patent No.
9,352,037 in the USPTO, each of which is related to the treatment of cancer with
an anti-CD47 antibody or an anti-SIRP? antibody in combination with certain
other antibodies. The opposition proceeding was rejected by the EPO and the
original opponent appealed the decision. On June 4, 2018, we acquired the
opposition against this European patent from the original opponent. Pursuant to
the agreement, we and Synthon have each agreed to release the other party (and
we have agreed to release SSB) from all claims and liabilities relating to the
USPTO and EPO proceedings.

The sublicense grant was subject to specified conditions, which have now been
met. These conditions included our withdrawal of the proceedings opposing the
above-mentioned SSB U. S. and European patents and the termination of these
proceedings by the USPTO and the EPO. In connection with the release of claims
by Synthon and us, SSB agreed to release us from all claims and liabilities
under the USPTO and EPO proceedings and to grant us a direct license to the
sublicensed patents in the event the license between SSB and Synthon is
terminated.

Our sublicense includes the right to further sublicense the applicable patent
rights to our collaborators, corporate partners and service providers and covers
one named product, which is magrolimab. In addition, we have the right to
replace magrolimab with a different anti-CD47 product in the event of a
development failure of magrolimab. We will also have an option to expand our
rights to cover a follow-on anti-CD47 product in exchange for a specified option
exercise fee. Synthon retains the right to use the licensed patents and to grant
other third parties the right to do so.

In exchange, for these sublicenses and option rights, we agreed to pay Synthon
an aggregate of up to approximately 40.0 million Euros comprising an upfront
payment upon the grant of the sublicense and the achievement of future
regulatory and commercial milestones which comprise the significant majority of
the aggregate payments. If we exercise our option right, we will pay Synthon
additional amounts upon the achievement of certain regulatory and commercial
milestones related to such follow-on anti-CD47 product. In addition, we will be
required to pay Synthon an annual license fee and a royalty of a tiered, low
single digit percentage on net sales of any approved licensed products. We have
the right to buy out our royalty obligations for each licensed product in full
by paying Synthon specified lump sum amounts prior to the occurrence of certain
defined events.

License and Collaboration Agreements



In September 2019, we entered into a research collaboration with bluebird to
pursue clinical proof-of-concept for our novel antibody-based conditioning
regimen, FSI-174 (anti-cKIT antibody) plus magrolimab (anti-CD47 antibody), with
bluebird's ex vivo lentiviral vector hematopoietic stem cell (LVV HSC) gene
therapy platform. This collaboration will focus initially on diseases that have
the potential to be corrected with transplantation of autologous gene-modified
blood-forming stem cells. Pursuant to the agreement, each party will be
responsible for 50% of the cost of the study. As of December 31, 2019, we
recorded a receivable of $0.7 million from bluebird for reimbursement of
research and development costs incurred.

In January 2018, we entered into a clinical trial collaboration and supply
agreement with Merck, to evaluate magrolimab combined with Merck's cancer
immunotherapy, avelumab, in a Phase 1b clinical trial in patients with ovarian
cancer. Pursuant to the agreement, the parties will jointly pay for the cost of
the study. As of December 31, 2019, we recorded a receivable of $0.3 million
from Merck for reimbursement of research and development costs incurred.

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In November 2017, we entered into a master clinical trial collaboration
agreement with Genentech to evaluate the safety, tolerability and preliminary
efficacy of magrolimab combined with Genentech's cancer immunotherapy,
atezolizumab, a fully humanized monoclonal antibody targeting PD-L1, in two
separate Phase 1b clinical trials (in patients with bladder cancer and AML,
respectively). Pursuant to the agreement, we will supply magrolimab for the
studies and will partially reimburse Genentech for its costs in connection with
the bladder cancer study, and Genentech will supply atezolizumab for the studies
and be solely responsible for all of its costs in connection with the AML study.

In November 2015, we entered into a technology license agreement with Stanford
under which Stanford granted us exclusive licenses under certain patents and
other intellectual property rights relating to our current product candidates,
including magrolimab and non-exclusive licenses under certain other patents and
other intellectual property rights to develop, manufacture and commercialize
products for use in certain licensed fields, including oncology. We are required
to make milestone payments up to $5.6 million in respect of the first three
licensed products that successfully satisfy certain clinical and regulatory
milestones in the United States, major European countries and Japan. The first
such milestone payment of $75,000 was paid to Stanford in February 2018. In
addition, we are required to pay Stanford a minimum annual fee and a royalty of
a tiered single digit percentage on net sales of licensed products, reimburse
patent-related expenses and share any non-royalty sublicensing income received
related to the licensed technology.

Grant Funding Agreements



In March 2017, we entered into an agreement with LLS regarding our NHL rituximab
combination clinical trial, as amended in June 2018 to include an additional
study. The LLS research grant stipulated various milestone-based payments with a
total award of $4.2 million through December 2019 which we had received as of
December 31, 2019. We are required to pay LLS certain development and regulatory
approval milestone payments, as well as a low single digit percentage royalty on
net sales, up to a maximum of $13.7 million in the aggregate.

In July 2019, we entered into an amendment to our agreement with LLS to further
advance the treatment of MDS. Under the amendment, we are eligible for up to
$3.0 million in additional grant funding based on milestone payments from LLS
upon the achievement of certain clinical or regulatory milestones in addition to
the $4.2 million award that we received pursuant to the March 2017 agreement, as
amended. As of December 31, 2019, we had not received any funding related to
this grant. Pursuant to the amendment, we could be required in the future to pay
amounts to LLS upon reaching certain development and regulatory approval
milestones on the additional funding, up to a maximum of $6.0 million in the
aggregate.

We concluded that the contingent milestone payments in our agreement with LLS,
as amended, represents a contingent repayment obligation. As of December 31,
2019, there was a liability for the contingent repayment obligation of
approximately $2.9 million.

In January 2017, we were awarded a research grant from CIRM supporting our CRC
trial. The CIRM grant stipulates various milestone-based payments to us with the
total award of $10.2 million over a period of four years. As of December 31,
2019, we had received $9.2 million under the award.

In November 2017, we were awarded a second research grant from CIRM for a
separate clinical trial study in AML. The total amount of the research grant
awarded was $5.0 million in various milestone-based payments over a period of
five years. During 2018, the award was amended to $3.2 million in
various-milestone payments over a period of five years, as was provided for
under the terms of the original award because we opted not to expand the patient
population participating in the study. In July 2019, the award was further
amended to include the patient population expansion that we previously opted out
of in 2018. In connection with the same, the award was reinstated to $5.0
million consistent with the original award amount. As of December 31, 2019, we
had received $3.6 million under the award.

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Under the terms of the CIRM grants, we are obligated to pay royalties and
licensing fees based on a low single digit royalty percentage on net sales of
CIRM-funded product candidates or CIRM-funded technology. We have the option to
decline any and all amounts awarded by CIRM. As an alternative to revenue
sharing, we have the option to convert each award to a loan, which option must
be exercised on or before ten business days after the FDA notifies us that it
has accepted our application for marketing authorization. In the event we
exercise our right to convert an award to a loan, we will be obligated to repay
the loan within ten business days of making such election, including interest at
the rate equal to the three-month LIBOR rate (1.91% as of December 31, 2019)
plus zero to 30% per annum that varies depending on the stage of the research
and the stage of development at the time the election is made. In the event that
we terminate a CIRM-funded clinical trial, we will be obligated to repay the
remaining CIRM funds on hand.

Off-Balance Sheet Arrangements

During 2019 and 2018, we did not have any off-balance sheet arrangements as defined in Item 303 of Regulation S-K.

Critical Accounting Policies



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 United States generally accepted accounting principles, or U.S.
GAAP. The preparation of these 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 amounts of revenues and
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 assumptions and estimates associated with accrued research
and development expenditures, stock-based compensation and revenue recognition
have the most significant impact on our financial statements. Therefore, we
consider these to be our critical accounting policies and estimates.

Accrued Research and Development Expenditures



We record accrued expenses for estimated preclinical study and clinical trial
expenses. Estimates are based on the services performed pursuant to contracts
with research institutions and contract research organizations and clinical
manufacturing organizations that conduct and manage preclinical studies and
clinical trials on our behalf based on actual time and expenses incurred by
them. Further, we accrue expenses related to clinical trials based on the level
of patient enrollment and activity according to the related agreement. We
monitor patient enrollment levels and related activity to the extent reasonably
possible and make judgments and estimates in determining the accrued balance in
each reporting period. If we underestimate or overestimate the level of services
performed or the costs of these services, our actual expenses could differ from
our estimates. To date, we have not experienced significant changes in our
estimates of preclinical studies and clinical trial accruals.

Contingent Repayment Obligation



We enter into research and license agreements that may include contingent
milestone payments that are based upon reaching certain development and
regulatory approval milestones. With respect to our agreement with the LLS, as
amended, we have concluded that the contingent milestone payments result in a
contingent repayment obligation. We estimate the fair value of the contingent
repayment obligation using a valuation model designed to estimate the
probability of the occurrence of such contingent milestone payments based on
various assumptions and incorporating estimated success rates. Estimated
payments are then discounted using present value techniques to arrive at an
estimated fair value. The contingent repayment obligation is subject to
revaluation at each balance sheet date, with revaluations recognized as a
component of other income (expenses) in the Company's statements of operations
and comprehensive loss. The portion of the contingent repayment obligation that
is subject to revaluation has a current cap of $4.2 million. The other portion
of the contingent repayment obligation which is dependent upon future product
sales is not included in the measurement as of December 31, 2019.

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Changes in the fair value of the contingent repayment obligation can result from
changes to one or multiple inputs, including adjustments to the discount rate,
changes in the assumed achievement or timing of development milestones, changes
in the probability of the successful completion of stages of clinical trials,
and changes in the probability of regulatory approval. These fair value
measurements are based on significant inputs not observable in the market.
Substantial judgment is used in determining these assumptions. Changes in
assumptions could have a material impact on the recorded value and associated
expense in any given period. In December 2019, the Company released positive
clinical data which led to a change in estimate of the probability of success
and the timing of achievement of regulatory milestones. This change in the
estimate resulted in an increase of $2.5 million in the contingent repayment
obligation.

Stock-Based Compensation

We recognize compensation costs related to stock-based awards granted, including
stock options and employee stock purchase plan, based on the estimated fair
value of the awards on the date of grant. We estimate the grant date fair value,
and the resulting stock-based compensation, using the Black-Scholes
option-pricing model. The grant date fair value of the stock-based awards is
generally recognized on a straight-line basis over the requisite service period,
which is generally the vesting period of the respective awards.

The Black-Scholes option-pricing model requires the use of highly subjective
assumptions to determine the fair value of stock-based awards. These assumptions
include:

• Expected Term-The expected term represents the period that stock-based


          awards are expected to be outstanding. The expected term for option
          grants is determined using the simplified method, as we do not have
          sufficient historical data to use any other method to estimate expected
          term. The simplified method deems the expected term to be the midpoint

between the vesting date and the contractual life of the stock-based

awards.

• Expected Volatility-Since we have limited trading history for our common


          stock due to our short trading history, the expected volatility was
          estimated based on the average volatility for comparable publicly traded
          biotechnology companies over a period equal to the expected term of the

stock option grants. The comparable companies were chosen based on their

similar size, stage in the life cycle or area of specialty.

• Risk-Free Interest Rate-The risk-free interest rate is based on the U.S.

Treasury zero coupon issues in effect at the time of grant for periods

corresponding with the expected term of option.

• Expected Dividend-We have never paid dividends on our common stock and

have no plans to pay dividends on our common stock. Therefore, we used

an expected dividend yield of zero.

We will continue to use judgment in evaluating the expected volatility and expected term utilized for our stock-based compensation calculations on a prospective basis.

Revenue Recognition



We enter into collaborative arrangements with partners that fall under the scope
of Accounting Standards Codification Topic 808, Collaborative Arrangements (ASC
808). We analyze these collaboration arrangements to assess whether they are
within the scope of ASC 808 to determine whether such arrangements involve joint
operating activities performed by parties that are both active participants in
the activities and exposed to significant risks and rewards dependent on the
commercial success of such activities. This assessment is performed throughout
the life of the arrangement based on changes in the responsibilities of all
parties in the arrangement. The accounting for some of the activities under
collaboration arrangements may be analogized to Accounting Standards
Codification Topic 606, Revenue from Contracts with Customers (ASC 606) for
distinct units of account that are reflective of a vendor-customer relationship.
For units of account under the collaboration agreements which are not in the
scope of ASC 606, we record the cost sharing or reimbursement activities as an
adjustment or reduction to the research and development expenses.

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In determining the appropriate amount of revenue to be recognized as we fulfill
our obligations under each of its agreements, we perform the following steps:
(i) identification of the promised goods or services in the contract; (ii)
determination of whether the promised goods or services are performance
obligations including whether they are distinct in the context of the contract;
(iii) measurement of the transaction price, including the constraint on variable
consideration; (iv) allocation of the transaction price to the performance
obligations based on estimated selling prices; and (v) recognition of revenue
when (or as) we satisfy each performance obligation.

If these arrangements contain a license to our intellectual property, we must
use judgement to determine if the license is distinct from the other performance
obligations identified in the arrangement. If the license is determined to be
distinct, we recognize revenues attributed to the license when the license is
transferred to the customer and the customer is able to use and benefit from the
license. The transaction price may include non-refundable, upfront license fees,
and potential development milestone payments. For the milestone payments, we
must estimate whether the milestones are considered probable of being reached
and estimate the amount, if any, to be included in the transaction price.

Recent Accounting Pronouncements Not Yet Adopted

Please refer to Note 2 to our financial statements appearing under Part II, Item 8 for a discussion of new accounting standards updates that may impact us.

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