This Quarterly Report on Form 10-Q includes "forward-looking statements" within
the meaning of Section 27A of the Securities Act of 1933, as amended, and
Section 21E of the Securities Exchange Act of 1934, as amended (the Exchange
Act). All statements in this Quarterly Report on Form 10-Q other than statements
of historical facts, including statements regarding our strategy, future
operations, future financial position, future revenues, future royalty payments,
the achievement of milestones, projected costs, prospects, plans, intentions,
expectations, and objectives could be forward-looking statements. The words
"anticipates," "believes," "could," "designed," "estimates," "expects," "goal,"
"intends," "may," "plans," "projects," "pursuing," "will," "would" and similar
expressions (including the negatives thereof) are intended to identify
forward-looking statements, although not all forward-looking statements contain
these identifying words.

We have based these forward-looking statements largely on our current
assumptions, expectations, projections, intentions, objectives and/or beliefs
about future events or occurrences and these forward-looking statements are
subject to a number of risks, uncertainties and assumptions, including, but not
limited to, those described in Part II, Item 1A, "Risk Factors" in this
Quarterly Report on Form 10-Q. It is not possible for our management 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. The timing of certain events and circumstances and known and unknown
risks and uncertainties could cause actual results to differ materially from
those anticipated or implied in the forward-looking statements that we
make. Therefore, you should not place undue reliance on our forward-looking
statements.

Our forward-looking statements in this Quarterly Report on Form 10-Q are based on current information and we do not assume any obligation to update any forward-looking statements expect as required by the federal securities laws.



You should read the following Management's Discussion and Analysis of Financial
Condition and Results of Operations (this MD&A) together with the unaudited
condensed consolidated financial statements and the related notes thereto
included in this Quarterly Report on Form 10-Q. This MD&A contains
forward-looking statements that are subject to risks and uncertainties, such as
those set forth in the sections of this Quarterly Report on Form 10-Q captioned
"Cautionary Note Regarding Forward-Looking Statements," "Risk Factors" and
elsewhere. As a result, our actual results may differ materially from those
anticipated in these forward-looking statements.

                                    Overview

We are a clinical-stage, research and development biotechnology company focused
on developing novel immunotherapeutic candidates for the treatment of different
forms of cancer. We have developed two versatile and enabling platform
technologies for rational design of precision immune modulatory drugs. Our lead
clinical candidate, APVO436, and preclinical candidates, ALG.APV-527 and
APVO603, were developed using our ADAPTIR™ modular protein technology platform.
Our preclinical candidate APVO442, was developed using our ADAPTIR-FLEX™ modular
protein technology platform.

The versatile and robust ADAPTIR and ADAPTIR-FLEX platforms are designed to
generate monospecific, bispecific, and multispecific antibody candidates that
are capable of enhancing the human immune system against cancer cells. ADAPTIR
and ADAPTIR-FLEX are both modular platforms, which gives us the flexibility to
generate immunotherapeutic candidates with a variety of mechanisms of action.
This flexibility in design allows us to potentially generate novel therapeutic
candidates that may provide the foundation for the establishment of effective
strategies against difficult to treat, as well as advanced forms of cancer. We
have successfully designed and constructed numerous investigational-stage
prototype product candidates based on our ADAPTIR and ADAPTIR FLEX platforms.
The ADAPTIR platform technology is designed to generate monospecific and
bispecific immunotherapeutic proteins that specifically bind to one or more
targets, for example, bispecific therapeutic molecules, which may have
structural and functional advantages over monoclonal antibodies. The structural
differences of ADAPTIR molecules over monoclonal antibodies allow for the
development of ADAPTIR immunotherapeutics that are designed to engage immune
effector cells and disease targets in a novel manner to produce unique signaling
responses and ultimately kill tumors or modulate the immune system to kill
tumors. The ADAPTIR FLEX platform technology is designed to generate bispecific
and multispecific immunotherapeutic proteins and uses heterodimer technology so
that two or more targets can be engaged simultaneously.

We are skilled at candidate generation, validation, and subsequent preclinical
and clinical development using the ADAPTIR platform and have added the
ADAPTIR-FLEX platform to generate multispecific candidates or other candidates
to our platform capabilities. We have developed preclinical candidates based on
the ADAPTIR-FLEX platform which are advancing in our pipeline. We are developing
our ADAPTIR and ADAPTIR-FLEX molecules by way of our protein engineering,
preclinical development, process development, and clinical development
capabilities.

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Recent Developments:



Enrollment and dosing have commenced in Part 2 (Expansion Phase) of Company's
multicenter 5001 Phase 1B clinical trial to evaluate APVO436 in adult patients
with acute myeloid leukemia (AML).

Reported 3 publications in two peer-reviewed journals (Cancers[Basel]) and Frontiers in Aging) regarding the salient features of the data obtained during Part 1 (Dose escalation phase) of the 5001 APVO436 Phase 1B trial.

Participated in Euroleukemia2021 Meeting with an oral and a poster presentation.



Showcased the Company's preclinical assets, APVO442 and APVO603, and their
potential to improve efficacy in the treatment of solid tumors and participated
in discussions about risk mitigation in cell engager candidates at the Virtual
Cell Engager Summit.

Presented the unique aspects of the Company's proprietary ADAPTIR AND ADAPTIR-FLEX platforms at the Cambridge Health Institute PEGS Virtual Conference.



On November 4, 2021, our Board amended the Rights Agreement dated as of November
8, 2020 by and between the Company and Broadridge Corporate Issuer Solutions,
Inc. to extend the expiration date of such agreement from November 8, 2021 to
November 5, 2022. Other than extending the expiration date of the Rights
Agreement, the terms of the Rights Agreement have remained the same.

Results of Operations



Except as otherwise stated below, the following discussions of our results of
operations reflect the results of our continuing operations, excluding the
results related to Aptevo BioTherapeutics LLC (Aptevo BioTherapeutics), which
was sold in February 2020 to Medexus and has been separated from continuing
operations and reflected as a discontinued operation. See Note 2 - Discontinued
Operations to the accompanying financial statements for additional information.

Comparison of the Nine Months Ended September 30, 2021 and September 30, 2020

Royalty Revenue



We recorded royalty revenue of $8.6 million and $1.9 million for the nine months
ended September 30, 2021 and September 30, 2020. The payment from Pfizer relates
to a Collaboration and License Agreement (Definitive Agreement) acquired by
Aptevo as part of our spin-off from Emergent in 2016. The agreement was
originally executed by Trubion Pharmaceuticals, which was subsequently acquired
by Emergent, and Wyeth, a wholly-own subsidiary of Pfizer. The royalty term runs
through January 2027, which is the seventh anniversary of the first commercial
sale of the CD20 biosimilar. On March 30, 2021, we entered into the Royalty
Purchase Agreement pursuant to which we sold to HCR the right to receive royalty
payments made by Pfizer in respect of net sales of RUXIENCE. We maintain our
rights under the Definitive Agreement originally between Trubion and Wyeth, with
the exception of the cash flows of the RUXIENCE royalty payments purchased by
HCR. Due to our continuing involvement under the Definitive Agreement originally
between Trubion and Wyeth, we continue to recognize royalty revenue on net sales
of RUXIENCE and record the royalty payments to HCR as a reduction of the
liability when paid. As such payments are made to HCR, the balance of the
liability will be effectively repaid over the life of the Royalty Purchase
Agreement. To the extent total future royalties collected are an amount less
than the liability, the Company is not obligated to fund any such shortfall.

Research and Development Expenses



We expense research and development costs as incurred. These expenses consist
primarily of the costs associated with our research and discovery activities,
including conducting non-clinical studies and clinical trials, fees to
professional service providers for analytical testing, independent monitoring or
other administration of our clinical trials and obtaining and evaluating data
from our clinical trials and non-clinical studies, as well as costs of contract
manufacturing services for clinical trial material, and costs of materials used
in clinical trials and research and development. Our research and development
expenses primarily consist of:

• employee salaries and related expenses, including stock-based compensation


        and benefits for our employees involved in our drug discovery and
        development activities;

• external research and development expense incurred under agreements with

third-party contract research organizations (CRO's) and investigative


        sites;


  • manufacturing material expense for third-party manufacturing; and


  • overhead costs such as rent, utilities and depreciation.


We expect our research and development spending will be dependent upon such
factors as the results from our clinical trials, the availability of
reimbursement of research and development spending, the number of product
candidates under development, the size, structure and duration of any clinical
programs that we may initiate, and the costs associated with manufacturing our
product candidates on a large-scale basis for later stage clinical trials. We
may experience interruption of key clinical trial activities, such as patient
enrollment and clinical trial site monitoring, and key non-clinical activities
due to the ongoing COVID-19 pandemic. While programs

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are still in the preclinical trial phase, we do not provide a breakdown of the initial associated expenses as we are often evaluating multiple product candidates simultaneously. Costs are reported in preclinical research and discovery until the program enters the clinic.

Our research and development expenses by program for the three and nine months ended September 30, 2021 and 2020 are shown in the following table:





                                            For the Three Months Ended September 30,
(in thousands)                                  2021                        2020                 Change
Clinical programs:
APVO436                                  $             1,162         $               849     $          313
Other                                                   (239 )                        30               (269 )
Total clinical programs                                  923                         879                 44

Preclinical program, general research
and discovery                                          3,444                       3,615               (171 )
Total                                    $             4,367         $             4,494     $         (127 )




                                             For the Nine Months Ended September 30,
(in thousands)                                  2021                        2020                Change
Clinical programs:
APVO436                                  $             3,663         $             3,125     $         538
Other                                                   (199 )                       253              (452 )
Total clinical programs                                3,464                       3,378                86

Preclinical program, general research
and discovery                                         10,987                       9,562             1,425
Total                                    $            14,451         $            12,940     $       1,511




For the three months ended September 30, 2021, research and development expenses
decreased by $0.1 million, to $4.4 million from $4.5 million for September 30,
2020. Research and development costs in the third quarter included higher
spending on our APVO436 clinical trial as we continue to advance that trial and
have now started dosing in our Phase 1b Expansion program. This increase was
offset by reduced costs in our discontinued clinical trials and lower spending
on other preclinical projects. For the nine months ended September 30, 2021,
research and development expenses increased by $1.5 million, to $14.4 million
from $12.9 million for September 30, 2020. The increase is due to increased
spending on consulting services for our APVO436 clinical trial as we continue to
advance that trial and increased spending on analytical analysis for our
preclinical programs, including ALG.APV-527, APVO603 and APVO442.

General and Administrative Expenses



General and administrative expenses consist primarily of personnel-related costs
and professional fees in support of our executive, business development,
finance, accounting, information technology, legal and human resource functions.
Other costs include facility costs not otherwise included in research and
development expenses.

For the three months ended September 30, 2021, general and administrative
expenses increased by $0.3 million, to $3.5 million from $3.2 million for
September 30, 2020. For the nine months ended September 30, 2021, general and
administrative expenses increased by $1.9 million, to $11.5 million from $9.7
million for September 30, 2020. This increase was primarily due to higher costs
related to responding to stockholder activism matters and higher employee costs.

Other Expense, Net



Other expense, net consists primarily of gains or losses realized on foreign
currency revaluation, costs related to debt extinguishment, accrued exit fees on
debt, non-cash interest on financing agreements, and interest on debt. Other
expense, net was $2.3 million for the three months ended September 30, 2021 and
$0.7 million for the three months ended September 30, 2020. Other expense, net
was $5.5 million for the nine months ended September 30, 2021 and $1 million for
the nine months ended September 30, 2020. The increase in other expense, net is
primarily related to interest expense and accrued exit fees for the MidCap
Credit Agreement, as well as non-cash interest expense for the Royalty Purchase
Agreement.

Discontinued Operations

The accompanying unaudited condensed consolidated financial statements include
discontinued operations from two separate transactions: the sale of hyperimmune
business to Saol International Limited in September 2017, from which we received
a payment in 2021 related to the collection of a certain accounts receivable,
and the sale of Aptevo BioTherapeutics in 2020.

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The following table represents the components attributable to income from discontinued operations in the unaudited condensed consolidated statements of operations (in thousands):





                                                   For the Three Months Ended            For the Nine Months Ended
                                                           September,                            September,
                                                   2021                 2020             2021               2020
Loss from operations - Aptevo BioTherapeutics             -                     -              -                (1,580 )
Gain on sale of Aptevo BioTherapeutics                    -                     -              -                14,338
Payment from Saol                                         -                     -            227                     -
Deferred payment from Medexus                            80                   157            399                   297
Income from discontinued operations             $        80         $         157     $      626       $        13,055




For the nine months ended September 30, 2021, we collected $0.2 million related
to the sale of the hyperimmune business to Saol as a result of the collection of
certain accounts receivable and a deferred payment of $0.4 million received from
Medexus related to first and second quarter 2021 IXINITY sales. For the nine
months ended September 30, 2020, we recognized net income from discontinued
operations totaling $13.0 million. This included the gain on the sale of Aptevo
BioTherapeutics of $14.3 million, net operating losses from Aptevo
BioTherapeutics of $1.6 million related to the period prior to the sale on
February 28, 2020, and a deferred payment from Medexus related to IXINITY sales.

Critical Accounting Policies and Significant Judgments and Estimates



The preparation of our unaudited condensed consolidated financial statements in
conformity with accounting principles generally accepted in the United States
(GAAP) requires management to make estimates and assumptions that affect the
amounts reported in the financial statements and accompanying notes. We base our
estimates on historical experience and on various other factors. Although we
believe that our judgments and estimates are appropriate, actual results may
differ materially from our estimates and changes in these estimates are recorded
when known. An accounting policy is considered critical if it is important to a
company's financial condition and results of operations and if it requires the
exercise of significant judgment and the use of estimates on the part of
management in its application.

Refer to Note 1 for discussion of our accounting policies, significant judgments, and estimates.

Off-Balance Sheet Arrangements

We did not have any off-balance sheet arrangements as of September 30, 2021.

Liquidity and Capital Resources

Cash Flows

The following table provides information regarding our cash flows for the nine months ended September 30, 2021 and 2020:





                                                              For the Nine Months Ended
                                                                    September 30,
(in thousands)                                               2021                   2020
Net cash (used in) provided by:
Operating activities                                    $      (17,799 )       $      (23,195 )
Investing activities                                              (595 )               28,120
Financing activities                                            29,237                  2,626
Increase (decrease) in cash, cash equivalents, and
restricted cash                                         $       10,843         $        7,551




Net cash used in operating activities of $17.8 million for the nine months ended
September 30, 2021 was primarily due to our net loss of $22.2 million and
changes in working capital accounts. Net cash used in operating activities of
$23.2 million for the nine months ended September 30, 2020, was primarily due to
our net loss of $10.7 million, changes in working capital accounts, and gain on
sale of Aptevo BioTherapeutics of $14.3 million, which was offset by the loss on
extinguishment of debt of $2.1 million.

Net cash used in investing activities for the nine months ended September 30,
2021, was due to purchases of property and equipment. Net cash provided by
investing activities for the nine months ended September 30, 2020, was due to
the cash received from the sale of Aptevo BioTherapeutics, net of transaction
fees.

Net cash provided by financing activities for the nine months ended September
30, 2021 is primarily due to the $35.0 million received from the Royalty
Purchase Agreement, $10.2 million received from the common stock sold to Lincoln
Park, offset by the $10.5 million partial repayment of the MidCap Financial term
loan. Net cash provided by financing activities for the nine months ended
September 30, 2020, is primarily due to the proceeds of $24.7 million from the
Credit Agreement we entered into with MidCap on

                                       20

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August 5, 2020, which was offset by the $22.1 million repayment of long-term
debt in the first quarter of 2020 when we repaid in full our prior term debt
facility with MidCap Financial Trust.

Sources of Liquidity

Equity Distribution Agreement



On December 14, 2020, we entered into an Equity Distribution Agreement with
Piper Sandler & Co (Piper Sandler). The Equity Distribution Agreement provides
that, upon the terms and subject to the conditions set forth therein, we may
issue and sell through Piper Sandler, acting as sales agent, shares of our
common stock having an aggregate offering price of up to $50 million. We have no
obligation to sell any such shares under the Equity Distribution Agreement. The
sale of the shares of our common stock by Piper Sandler, if any, will be
effected pursuant to a Registration Statement on Form S-3 which we filed on
December 14, 2020. We did not issue any shares under the Equity Distribution
Agreement in the nine months ended September 30, 2021.

The Equity Distribution Agreement will terminate upon the issuance and sale of
all shares under the Equity Distribution Agreement or upon the earlier
termination thereof at any time by us or Piper Sandler upon notice to the other
party.

Registration Statement

We previously filed a registration statement with the Securities and Exchange
Commission on November 13, 2017, amended on December 6, 2017 and declared
effective on December 15, 2017 (the Prior Registration Statement). The Prior
Registration Statement registered the offer and sale of an indeterminate number
of shares of common stock and preferred stock, an indeterminate principal amount
of debt securities and an indeterminate number of warrants to purchase common
stock, preferred stock, and various series of debt securities and/or warrants to
purchase any of such securities, having an aggregate initial offering price of
$150 million, of which an aggregate of $127.8 million remained unsold as of the
December 14, 2020. On December 14, 2020, we filed a new registration statement
covering the offering, issuance, and sale up to $200 million in common stock,
preferred stock, and various series of debt securities and/or warrants to
purchase any of such securities, which included the unsold securities from the
Prior Registration Statement.

Purchase Agreement



On December 20, 2018, we entered into a Purchase Agreement, and a Registration
Rights Agreement with Lincoln Park Financial LLC (Lincoln Park). Pursuant to the
purchase agreement, Lincoln Park has committed to purchase up to $35.0 million
worth of our common stock over a 36-month period commencing on February 13,
2019, the date the registration statement covering the resale of the shares was
declared effective by the SEC.

Under the Purchase Agreement, on any business day selected by us, we may direct
Lincoln Park to purchase shares of our common stock provided that Lincoln Park's
maximum commitment on any single day does not exceed $2.0 million. The purchase
price per share will be based off of prevailing market prices of our common
stock immediately preceding the time of sale; provided, however, that we cannot
direct any such purchase if the prevailing market price is less than $1.00. In
addition, we may also direct Lincoln Park to purchase other amounts as
accelerated purchases or as additional accelerated purchases if the closing sale
price of our common stock exceeds certain threshold prices as set forth in the
Purchase Agreement. In the nine months ended September 30, 2021, the Company
issued 407,047 shares of common stock to Lincoln Park under the Purchase
Agreement. We received $10.2 million in proceeds from issuance of these shares
and now have a remaining $24.8 million worth of shares of our common stock that
we may direct Lincoln Park to purchase pursuant to our Purchase Agreement.

Actual sales of shares of our common stock to Lincoln Park under the Purchase
Agreement will occur at our discretion from time to time and depend on a variety
of factors, including, among others, market conditions, the trading price of our
common stock and additional determinations as to the appropriate sources of
funding for our operations. Lincoln Park has no right to require any sales, but
is obligated to make purchases as we direct, in accordance with the Purchase
Agreement.

Warrants


On March 11, 2019, we completed a public offering of common stock and warrants, as follows:

• for a combined public offering price of $14.00 per share of common stock

and related warrants, 1,417,857 shares of common stock and related

warrants with a 5-year life to purchase up to 1,417,857 shares of common


        stock at an exercise price of $18.20 per share,



• for a combined public offering price of $13.86 per pre-funded warrant and

related warrant, pre-funded warrants with a 10-year life to purchase up to

153,571 shares of common stock at an exercise price of $0.14 per share and

related warrants with a 5-year life to purchase up to 153,571 shares of

common stock at an exercise price of $18.20 per share. These pre-funded


        warrants were exercised on March 21, 2019.


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For the nine months ended September 30, 2021, certain of the holders of our
warrants exercised warrants with a strike price of $18.20 per share, resulting
in the issuance of 54,105 shares of our common stock and aggregate proceeds to
the Company of approximately $1.0 million. As of September 30, 2021, there were
warrants to purchase 350,589 shares of our common stock outstanding.

Liquidity



We have financed our operations to date primarily through revenue generated from
our commercial products, the Royalty Purchase Agreement with HCR, royalty
payments from Pfizer, deferred payments from Medexus, the sale of our
hyperimmune products business in September 2017, the sale of Aptevo
BioTherapeutics on February 28, 2020, public offerings of our common stock, loan
proceeds, milestone payments, research and development funding from strategic
partners, and funds received at the date of our spin-off from Emergent. We had a
net loss of $22.7 million and $23.8 million for the nine months ended September
30, 2021 and 2020, respectively. We had cash and cash equivalents of $52.1
million, restricted cash of $1.3 million and an accumulated deficit of $207.8
million as of September 30, 2021.

For the nine months ended September 30, 2021, net cash used in our operating activities was $17.8 million.



Our future success is dependent on our ability to develop our product candidates
and ultimately upon our ability to attain profitable operations. We anticipate
that we will continue to incur significant operating losses for the next several
years as we incur expenses to continue to execute on our development strategy to
advance our preclinical and clinical stage assets. We will not generate revenues
from our development stage product candidates unless and/or until we or our
collaborators successfully complete development and obtain regulatory approval
for such product candidates, which we expect will take a number of years and is
subject to significant uncertainty. If we obtain regulatory approval for one of
our development stage product candidates, we expect to incur significant
commercialization expenses related to sales, marketing, manufacturing and
distribution, to the extent that such costs are not paid by collaborators. We do
not have sufficient cash to complete the clinical development of any of our
development stage product candidates and will require additional funding in
order to complete the development activities required for regulatory approval of
such product candidates. We will require substantial additional funds to
continue our development programs and to fulfill our planned operating goals.

Due to the ongoing COVID-19 pandemic, we may experience delays in opportunities
to partner our product candidates, due to financial and other impacts on
potential partners. Additionally, we may experience potential impacts on our
future deferred payments and milestones from Medexus due to effects of the
COVID-19 pandemic, which may impact Medexus' ability to continue to successfully
commercialize the IXINITY businesses. Additionally, we may experience potential
impacts on our future milestones, which are based on global net sales of
RUXIENCE, from HCR due to the effects of the COVID-19 pandemic, which may impact
Pfizer's ability to continue to successfully commercialize the RUXIENCE
business. We believe that our existing cash resources, the Investment Amount
received pursuant to the Royalty Purchase Agreement with HCR, the cash to be
generated from future IXINITY deferred payments, release of restricted cash
securing letters of credit, and funds available to us from the remaining
principal balance of the Credit Agreement with Midcap Financial, will be
sufficient to meet our projected operating requirements and debt service for at
least twelve months from the date of filing this Quarterly Report on Form 10-Q.

There are numerous risks and uncertainties associated with research, development, and commercialization of pharmaceutical products. Accordingly, our future funding requirements may vary from our current expectations and will depend on many factors, including, but not limited to:

• our ability to establish and maintain strategic partnerships, licensing or


        other arrangements and the financial terms of such agreements;


  • the number and characteristics of the product candidates we pursue;

• the scope, progress, results, and costs of researching and developing our

product candidates, and of conducting preclinical and clinical trials;

• our ability to obtain regulatory clearance to commence clinical trials for

product candidates;

• the timing of, and the costs involved in, completing our clinical trials,

and obtaining regulatory approvals for our product candidates;

• the costs involved in preparing, filing, prosecuting, maintaining,

defending and enforcing patent claims, including litigation costs and the

outcome of such litigation;

• the cost of commercialization activities if any of our product candidates


        are approved for sale, including marketing, sales, and distribution costs;


    •   the cost of manufacturing our product candidates and any products we
        successfully commercialize;


  • the cost of attracting and retaining skilled personnel;


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    •   whether and to what extent future proceeds are received under our Royalty

Purchase Agreement with HCR; and,

• the timing, receipt and amount of any milestone payments and deferred

payments from Medexus with respect to IXINITY.

If we are unable to raise substantial additional capital in the next year, whether on terms that are acceptable to us or at all, then we may be required to:

• delay, limit, reduce or terminate our clinical trials or other development

activities for one or more of our product candidates; and/or,

• delay, limit, reduce or terminate our establishment of other activities

that may be necessary to commercialize our product candidates, if

approved.




The sale of additional equity or convertible debt securities may result in
additional dilution to our stockholders. If we raise additional funds through
the issuance of debt securities or preferred stock or through credit facilities,
these securities and/or the loans under credit facilities could provide for
rights senior to those of our common stock and could contain covenants that
would restrict our operations. Additional funds may not be available when we
need them, on terms that are acceptable to us, or at all. We also expect to seek
additional funds through arrangements with collaborators, licensees or other
third parties. These arrangements would generally require us to relinquish or
encumber rights to some of our technologies or drug candidates, and we may not
be able to enter into such arrangements on acceptable terms, if at all. Due to
the ongoing COVID-19 pandemic, we may experience delays in clinical trials and
non-clinical work, and opportunities to partner our product candidates, due to
financial and other impacts on potential partners.

Contractual Obligations



We have an operating lease related to our office and laboratory space in
Seattle, Washington. This lease was amended and extended in March 2019. The term
of the amended lease is through April 2030 and we have two options to extend the
lease term, each by five years, as well as a one-time option to terminate the
lease in April 2023.

In January 2020, we entered into a contract with The Leukemia & Lymphoma Society
(LLS) to be part of an ongoing national AML master clinical trial called the
'Beat AML Master Clinical Trial.' The Beat AML Master Clinical Trial provides
access to leading academic cancer centers and allows us to study APVO436 in a
front-line AML setting. Once we begin participation in the Beat AML Master
Clinical Trial, our purchase obligation for the Beat AML Master Clinical Trial
may total up to $8.1 million over four years. As of the third quarter of 2021,
we have not begun participation in the Beat AML Master Clinical Trial and we do
not currently intend to participate under the current trial design. The Clinical
Trial Participation Agreement contains a termination for convenience clause
where we may terminate the agreement with 180 days prior written notice. We may
re-assess our participation in the master clinical trial as Part 2 (expansion
phase) of our Phase 1B APVO436 clinical trial progresses.

On August 5, 2020, we entered into a new Credit and Security Agreement (Credit
Agreement), with MidCap Financial. The Credit Agreement provided us with up to
$25 million of available borrowing capacity. The MidCap Financial loan has a 48
month term, is interest-only for the first 18 months, with straight-line
amortization for the remaining 30 months and bears interest at a rate of one
month LIBOR plus 6.25% per annum, subject to a 1.50% LIBOR floor and a 2.50%
LIBOR cap. Additionally, on March 30, 2021, we amended our Credit Agreement with
MidCap Financial and used $10 million of the proceeds received from the Royalty
Purchase Agreement with HCR to pay down the outstanding principal under this
agreement from $25 million to $15 million. The Company's Credit Agreement
currently references LIBOR. Contract language is expected to be incorporated
into these agreements to address the transition to an alternative reference
rate. The Company is currently evaluating the impact that ASU 2020-04 may have
on its consolidated financial statements.

On March 30, 2021, we entered into the Royalty Purchase Agreement pursuant to which the Company sold to HCR the right to receive royalty payments made by Pfizer in respect of net sales of RUXIENCE.



Our principal commitments include obligations under vendor contracts to purchase
research services and other purchase commitments with our vendors. In the normal
course of business, we enter into services agreements with contract research
organizations, contract manufacturing organizations and other third parties.
Generally, these agreements provide for termination upon notice, with specified
amounts due upon termination based on the timing of termination and the terms of
the agreement. The actual amounts and timing of payments under these agreements
are uncertain and contingent upon the initiation and completion of the services
to be provided.

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