You should read the following discussion and analysis of our financial condition and results of operations together with our(1) unaudited condensed consolidated financial statements and related notes thereto included elsewhere in this Quarterly Report on Form 10-Q, and (2) consolidated financial statements and related notes and management's discussion and analysis of financial condition and results of operations for the fiscal year ended December 31, 2020, included in our prospectus on Form S-1, filed with the Securities and Exchange Commission, or the SEC, on October 7, 2021.Unless the context requires otherwise, references in this Quarterly Report on Form 10-Q to "Pyxis," the "Company," "we," "us," and "our" refer to Pyxis Oncology, Inc. and its subsidiaries.

Forward-Looking Statements

This Quarterly Report on Form 10-Q contains "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. These statements are often identified by the use of words such as "anticipate," "believe," "can," "continue," "could," "estimate," "expect," "intend," "likely," "may," "might," "objective," "ongoing," "plan," "potential," "predict," "project," "should," "to be," "will," "would," or the negative or plural of these words, or similar expressions or variations, although not all forward-looking statements contain these words. We cannot assure you that the events and circumstances reflected in the forward-looking statements will be achieved or occur and actual results could differ materially from those expressed or implied by these forward-looking statements.

Factors that could cause or contribute to such differences include, but are not limited to, those identified herein, and those discussed in the section titled "Risk Factors" set forth in Part II, Item 1A. of this Quarterly Report on Form 10-Q and in our other filings with the SEC. These risks are not exhaustive. New risk factors emerge from time to time and it is not possible for our management to predict all risk factors, 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. In addition, statements that "we believe" and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this Quarterly Report on Form 10-Q, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements.

Overview

We are a preclinical oncology company focused on developing an arsenal of next-generation therapeutics to target difficult-to-treat cancers and improve quality of life for patients. We develop our product candidates with the objective to directly kill tumor cells, and to address the underlying pathologies created by cancer that enable its uncontrollable proliferation and immune evasion. Since our launch in 2019, we have developed a broad portfolio of novel antibody drug conjugates, or ADCs, product candidates and monoclonal antibody, or mAb, preclinical discovery programs that we are developing as monotherapies and in combination with other therapies.

We take a holistic view of attacking the key drivers of tumor growth and progression within the tumor microenvironment, or TME, including targeting of tumor antigens and modulating the innate and adaptive immune response. The TME is an immunosuppressive environment consisting of cancer cells and stroma, which includes the blood vessels, immune cells, fibroblasts, signaling molecules, and the extracellular matrix that surrounds the tumor. The TME plays multiple roles in tumor formation, progression and metastasis as well as anti-tumor immune activity. We are developing our ADC product candidates and mAb preclinical discovery programs to precisely target key modulators of the adaptive and innate immune system within the TME for difficult-to-treat solid and hematologic tumors.

Our ADCs utilize next-generation technologies that, based on observations from preclinical studies, may allow for increased stability and a reduced off target side-effect profile. We in-licensed two ADC programs in March 2021 from Pfizer and one ADC program from LegoChem in December 2020. Our two most advanced product candidates, PYX-201 and PYX-202, are in Investigational New Drug or IND-enabling studies. In addition, PYX-203 is in preclinical development, and we have additional preclinical mAb discovery programs derived from work at the laboratory of Dr. Thomas Gajewski. We retain full worldwide development and commercialization rights to all our product candidates, with the exception of PYX-202 in South Korea. We are focusing our efforts on eliminating tumor cells through the selective antibody mediated delivery of cytotoxic payloads and by modulating key immune-associated pathways in the TME. We intend to develop each of our programs as a monotherapy and potentially also in combination with other therapies. We have designed our product candidates to overcome the limitations of ADCs that use conventional conjugation with the aim of providing patients with safer and more efficacious treatment options.







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Our current pipeline is summarized below.

[[Image Removed: img29654412_0.jpg]]

PYX-201

Our ADC PYX-201 is an investigational, novel ADC consisting of an Immunoglobulin G1, or IgG1, anti-fibronectin Extradomain-B, or EDB, mAb conjugated to auristatin via a site-specific cathepsin B-cleavable linker. Fibronectin is a glycoprotein found in the extracellular matrix. Fibronectin EDB regulates blood vessel morphogenesis, which provides the tumor access to nutrition and oxygen, a means to remove waste, and a pathway for metastasizing cells. EDB is overexpressed in many malignancies and is minimally expressed in most normal adult tissues, making it a potentially attractive means to target tumors while sparing healthy cells. In preclinical models of patient derived xenograft, or PDX models, we observed tumor regression with single agent PYX-201. In addition, we observed that the treatment of preclinical syngeneic tumor models with PYX-201 resulting in T cell infiltration, which is a hallmark of immunogenic cell death, or ICD, and enhanced infiltration of T cells into the TME, enabling synergistic activity in combination with a checkpoint inhibitor.

We plan to initially develop ADC PYX-201 for the treatment of non-small cell lung cancer, or NSCLC, breast cancer and other solid tumors. We licensed worldwide rights to PYX-201, built on the FACT platform, from Pfizer. We anticipate submitting an IND by mid-2022.

PYX-202

Our ADC PYX-202 is an investigational, novel ADC consisting of an IgG1 anti-Delta-like 1 homolog, or DLK1, mAb conjugated to monomethyl auristatin, or MMAE via a site-specific plasma- stable ß-glucuronide linker. DLK1 is a transmembrane protein normally expressed in embryonic tissues but highly restricted in healthy adult tissues. DLK1 becomes re-expressed in certain solid tumor malignancies. PYX-202 is designed to use the microtubule-disrupting MMAE payload, which is utilized in three currently marketed ADCs providing clinical support that the payload has anti-tumor effect potential. We have observed significant anti-tumor activity as measured by durable tumor regression in preclinical small cell lung cancer, or SCLC, PDX models, as well as in a human cell line-based, or CDX, mouse model of cancer.

Our development plan for ADC PYX-202 is initially targeted at the treatment of SCLC, soft tissue sarcoma, or STS, and other solid tumors. We licensed worldwide rights to PYX-202, excluding South Korea, from LegoChem Biosciences, Inc. We anticipate submitting an IND by mid-2022.

PYX-203

PYX-203 is an investigational ADC consisting of an IgG1 anti-CD123 mAb dimeric antibody conjugated to a novel cyclopropylpyrroloindoline, or CPI dimer payload via a site-specific plasma-stable, cleavable linker. CD123, or IL-3Ra, is a cell surface antigen highly expressed on leukemic stem cells and leukemic blasts in acute myeloid leukemia, or AML. PYX-203, utilizes a novel DNA-damaging toxin, CPI, and we have observed significant anti-tumor activity as measured by the reduction in the frequency of the leukemic cells in the blood and bone marrow in nine disseminated preclinical AML models. We licensed worldwide rights to PYX-203 built on the FACT platform. We expect to submit an IND by 2023.

In addition to the programs identified above, we are conducting research and development activities on various targets, leveraging our expertise in monoclonal antibodies and understanding of immuno-oncology. Our preclinical discovery programs are novel antibody programs intended to enhance the anti-tumor activity of natural killer, or NK cells, and T cells and to overcome immunosuppressive activity of tumor resident myeloid cells such as tumor associated macrophages, or TAMs, and myeloid derived suppressor cells, or MDSCs.



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Since our inception, we have focused substantially all our resources on organizing and staffing our company, business planning, raising capital, conducting research and development activities, filing and prosecuting patent applications, identifying potential product candidates and undertaking preclinical studies and a clinical trial. We do not have any products approved for sale and have not generated any revenue from product sales or from any other sources. To date, we have funded our operations with proceeds from sales of convertible preferred stock and our recent IPO. Our ability to generate any product revenue, and in particular to generate product revenue sufficient to achieve profitability, will depend on the successful development and eventual commercialization of one or more of our product candidates.

We have incurred significant operating losses since our inception. As of September 30, 2021, we had an accumulated deficit of $74.9 million. For the three and nine months ended September 30, 2021 and 2020, we had net losses of $14.2 million and $3.2 million and $59.1 million and $8.2 million, respectively. We expect to continue to incur significant expenses and operating losses for the foreseeable future, and we expect that our expenses and capital expenditures will increase substantially in connection with our ongoing activities.

In October 2021, we completed our IPO in which we sold 10,500,000 shares of our common stock at $16.00 per share and received net proceeds of approximately $152.2 million, after deducting underwriters' discounts and commissions and other issuance costs.

COVID-19 Business Update

We are monitoring the potential impact of the COVID-19 pandemic on our business and consolidated financial statements. To date, we have not experienced material business disruptions. We are following, and will continue to follow, recommendations from the U.S. Centers for Disease Control and Prevention as well as federal, state and local governments regarding working-from-home practices for non-essential employees. For example, the COVID-19 pandemic in Massachusetts resulted in a temporary reduction in workforce presence at our Cambridge research facility. While we have increased workforce presence at our facility, not all employees have returned to our facility, and we cannot be certain that we will not be required to close our facility in the future as a result of the COVID-19 pandemic. We cannot be certain what the overall impact of the COVID-19 pandemic will be on our business, and it has the potential to adversely affect our business. For additional information about risks and uncertainties related to the COVID-19 pandemic that may impact our business, financial condition and results of operations, see the section titled "Risk Factors" under Part II, Item 1A in this Quarterly Report.

Licensing and Collaboration Agreements

License Agreement with Pfizer, Inc.

In December 2020, we entered into a license agreement, as amended, the "Pfizer License Agreement," with Pfizer, Inc., or Pfizer, for worldwide development and commercialization rights to two of Pfizer's proprietary ADC product candidates (now referred to as PYX-201 and PYX-203), as well as other ADC product candidates directed to the licensed targets. The Pfizer License Agreement became effective for the Company in March 2021. The initial exclusively licensed targets are extra domain B (EBD of fibronectin) and CD123 and we have the option to expand the scope of our license to add other licensed targets. Pfizer has also granted us a non-exclusive license to use Pfizer's FACT platform technology to develop and commercialize the licensed ADCs. In March 2021, we entered into an amendment to the Pfizer License Agreement to include additional know-how within the scope of our license.

Pursuant to the Pfizer License Agreement, we incurred a combined $25.0 million, consisting of an upfront fee of $5.0 million and issued 12,152,145 shares of Series B Convertible Preferred Stock in 2021 to Pfizer, and are obligated to pay future contingent payments and royalties, including up to an aggregate of $660 million in milestones for the first four licensed ADCs. Additional ADC targets may be licensed for an additional upfront fee, and such targets would be subject to additional regulatory and commercial sales milestones. Additionally, if products are launched, we will pay Pfizer tiered royalties on net sales of licensed products in varying royalty rates ranging from low single digits to mid-teens. Our royalty obligations apply on a licensed product-by-licensed product and country-by-country basis from first commercial sale until the latest to occur of: (1) 12 years from first commercial sale; (2) the expiration of all regulatory or data exclusivity; and (3) the expiration of the last valid claim of a licensed patent covering the licensed product in a country. We are also obligated to pay Pfizer a percentage of certain sublicensing revenue ranging from low-double digits to thirty percent based on the stage of development of the licensed product at the time of entering into the applicable sublicense.

License Agreement with the University of Chicago

In April 2020, we entered into a license agreement, or the "University License Agreement," with the University of Chicago, or the University, to obtain an exclusive license under certain patents resulting from research performed, in-part, by our scientific founder, Dr. Thomas Gajewski, as well as a non-exclusive license to certain know-how and materials. Under the terms of the license, we have the exclusive global right to develop and commercialize products that are covered by a valid claim of a licensed patent, incorporate or use the licensed know-how and materials or are known to assess, modulate or utilize the activity of certain specified biological targets.



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In partial consideration for the license from the University, we issued to the University 311,076 shares (48,919 shares post reverse stock split) of our Common Stock in 2020. Pursuant to the University License Agreement, we are obligated to pay to the University an annual maintenance fee of $10 thousand commencing on the third anniversary of the effective date, potential development and commercial milestones of up to an aggregate of $7.7 million as well as running royalties on net sales of licensed products at varying rates ranging from less than one percent to the low single digits, subject to a minimum annual royalty ranging from $1.0 million to $3.0 million during certain years following the first commercial sale of a licensed product. Our royalty obligations apply on a licensed product-by-licensed product and country-by-country basis until: (1) for licensed products covered by a valid claim of a licensed patent in a given country, the expiration of such valid claims; and (2) for all other licensed products, 10 years from the first commercial sale of a licensed product in a given country. We are also obligated to pay the University a percentage of certain sublicensing revenue ranging from low- to mid-teens based on the date of entering into the applicable sublicense.

The Voxall Joint Venture with Alloy Therapeutics, Inc.

In March 2021, we entered into definitive transaction agreements with Alloy to finance and operate Voxall, a joint venture company formed in collaboration with Alloy to leverage Pyxis's site-specific target catalog and Alloy's ATX-Gx™ platform and antibody discovery services.

Voxall granted to both Pyxis and Alloy 50% of the voting membership units of Voxall in exchange for certain initial contributions. Our initial contribution included $50 thousand and a non-exclusive fully paid-up license to certain intellectual property owned or controlled by us to enable the collaboration with Voxall as further described below. Alloy's initial contribution included $50 thousand and the execution of a license agreement and a services agreement to enable the collaboration with Voxall as further described below. Voxall is governed by a board of directors consisting of an equal number of our representatives and Alloy's representatives. We have designated our CEO, Lara Sullivan M.D., as our board representative. The protective provisions under Voxall's operating agreement require the approval of both Pyxis and Alloy before Voxall may take certain actions.

In connection with the formation of Voxall, we entered into a three year research collaboration with Alloy and Voxall to identify and select certain biological targets and create development candidate antibodies directed to those targets for further preclinical development, clinical development and commercialization. Under the collaboration agreement, the parties will conduct research under a mutually agreed research plan and budget for up to six research programs focused on mutually selected targets. Each of us and Alloy will provide research support for the collaboration through separate services agreements with Voxall, which services will be paid in the form of promissory notes issued by Voxall. Voxall will own all intellectual property arising from the collaboration, subject to certain exceptions for intellectual property relating to Alloy's ATX-Gx™ platform.

If a development candidate antibody under a research program meets certain mutually agreed selection criteria, we will have the exclusive option to obtain an exclusive license from Voxall to further develop and commercialize all the development candidate antibodies discovered under that research program. We may in-license one research program on certain pre-agreed financial terms. For all other in-licensed research programs, we will be obligated to pay fair market value as determined by a third party valuation. Any research program that we do not in-license may be licensed by Voxall to a third party.

Agreements with LegoChem Biosciences, Inc.

In December 2020, we entered into a license agreement, or the "LegoChem License Agreement," with LegoChem Biosciences, Inc., or LegoChem, pursuant to which we licensed worldwide (other than Korea) development and commercialization rights for LCB67, an ADC product candidate targeting DLK1 (now referred to as PYX-202), and products containing the licensed compound. We have the right to ask LegoChem to use commercially reasonable efforts at our cost to modify the licensed compound if there are certain technical failures of the licensed compound that we believe are attributable to the linker or the payload used in the licensed compound, and the modified compound will replace the unmodified version as the licensed compound. In February 2021, we entered into an amendment to the LegoChem License Agreement to include additional patents within the scope of our license.

Pursuant to the LegoChem License Agreement, we paid an upfront fee of $0.5 million in 2020 and $9.0 million in 2021 and are required to purchase certain initial quantities of licensed product from LegoChem for an estimated cost of $7.0 million. We are also obligated to pay up to an aggregate of $284.5 million to LegoChem if certain development, regulatory and sales milestones are achieved, as well as tiered royalties on net sales of licensed products ranging from mid-single digit to high single digit royalty rates. Our royalty obligations apply on a licensed product-by-licensed product and country-by-country basis until the latest to occur of: (1) the date of expiration of the last valid claim of a licensed patent covering the licensed product; (2) 10 years from first commercial sale; and (3) the expiration of regulatory or data exclusivity.



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In December 2020, we also entered into an opt-in, investment and additional consideration agreement with LegoChem, or the "Opt-In Agreement." Under the Opt-In Agreement, we issued to LegoChem shares of Series B Convertible Preferred Stock as part of our Series B financing in March 2021. We are also obligated to pay LegoChem a percentage of sublicensing revenue ranging from low-double digits to thirty percent based on the stage of development of the licensed product at the time of entering into the applicable sublicense, which percentage may be increased to up to fifty percent for any upfront payment from a sublicensee under certain circumstances. LegoChem has exercised its option under the Opt-In Agreement to make a $8.0 million payment to us, which payment was made in April 2021, in exchange for the right to receive an extra milestone payment of $9.6 million upon the earliest to occur of certain events, including the date of pricing or offer of the first public offering of our common stock or if we are the subject of a change of control transaction. LegoChem may elect to receive payment for up to 50% of this extra milestone payment as well as certain development milestone payments under the LegoChem License Agreement in shares of our preferred stock.

Components of Our Results of Operations

Operating Expenses

Research and Development Expenses

Research and development expenses consist of costs incurred for our research activities, including our discovery efforts, and the development of our programs. These expenses include:



?
employee-related expenses, including salaries, payroll taxes, related benefits
and stock-based compensation expense for employees engaged in research and
development activities;
?
expenses incurred in connection with our product candidates and the development
of research programs, including expenses incurred under agreements with third
parties, such as consultants, contractors, contract manufacturing organizations,
or CMOs, and contract research organizations, or CROs;
?
cost incurred for laboratory supplies and research materials; and
?
facilities, depreciation and other expenses, which include direct and allocated
expenses for rent and maintenance of facilities and insurance.

We expense research and development costs as incurred. Non-refundable advance payments that we make for goods or services to be received in the future for use in research and development activities are recorded as prepaid expenses. The prepaid amounts are expensed as the related goods are delivered or the services are performed, or when it is no longer expected that the goods will be delivered, or the services rendered.

Our direct external research and development expenses consist of costs that include fees, reimbursed materials and other costs paid to consultants, contractors, CMOs and CROs in connection with our preclinical and clinical activities. We do not allocate employee costs, costs associated with our discovery efforts, laboratory supplies, and facilities expenses, including depreciation or other indirect costs, to specific product development programs because these costs are deployed across multiple programs and our platform and, as such, are not separately classified.

Product candidates in later stages of clinical development generally have higher development costs than those in earlier stages of clinical development, primarily due to the increased size and duration of later-stage clinical trials. We expect that our research and development expenses will increase substantially in connection with our ongoing and planned preclinical and clinical development activities in the near term and in the future. The successful development of our product candidates is highly uncertain. At this time, we cannot accurately estimate or know the nature, timing and costs of the efforts that will be necessary to complete the preclinical and clinical development of any of our product candidates and we may never succeed in obtaining regulatory approval for any of our product candidates.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and personnel-related costs, including stock-based compensation, for our personnel in executive, business development, legal, finance and accounting, human resources and other administrative functions. General and administrative expenses also include legal fees relating to patent and corporate matters; professional fees paid for accounting, auditing, consulting, and tax services; insurance costs; travel expenses; and facility costs not otherwise included in research and development expenses.

We anticipate that our general and administrative expenses will increase in the future as we increase our headcount to support our continued research activities and development of our programs and platform.

Other Income (Expense)

Interest income consists of interest earned on our invested cash and cash equivalent balances. We expect our interest income will increase as we invest the cash received from the net proceeds from our IPO.



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The change in fair value of derivative liability represents the increase in the fair value of the derivative liability recorded as a result of an Opt-in, Investment and Additional Consideration Agreement with LegoChem, or the "Opt-In Agreement".

Loss from Equity Method Investment in Joint Venture

In March 2021, we entered into definitive transaction agreements with Alloy Therapeutics, Inc. ("Alloy") and Voxall Therapeutics, LLC to finance and operate Voxall, a joint venture company formed in collaboration with Alloy to leverage our technology and Alloy's ATX-Gx™ platform and antibody discovery services. We account for our investment in the Voxall joint venture under the equity method.

Results of Operations

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

The following table summarizes our results of operations for the three months ended September 30, 2021 and 2020 (in thousands):





                                                 Three Months Ended
                                                    September 30,
                                                  2021          2020        Change
Operating expenses:
Research and development                       $    7,849     $  2,425     $   5,424
General and administrative                          3,772          767         3,005
Total operating expenses:                          11,621        3,192         8,429
Loss from operations                              (11,621 )     (3,192 )      (8,429 )
Other income (expense):
Interest income                                         6            1             5

Change in fair value of derivative liability (2,560 ) - (2,560 ) Total other income (expense)

                       (2,554 )          1        (2,555 )
Net loss and comprehensive loss                $  (14,175 )   $ (3,191 )   $ (10,984 )

Research and Development Expenses

The following table summarizes our research and development expenses for the three months ended September 30, 2021 and 2020 (in thousands):



                                                    Three Months Ended
                                                       September 30,
                                                   2021             2020          Change

Research and development program expenses $ 5,695 $ 1,268 $ 4,427 Personnel-related expenses including stock-based compensation

                              1,141             703            438
Other research and development expenses               1,013             454            559

Total research and development expenses $ 7,849 $ 2,425 $ 5,424

Research and development expenses increased by $5.4 million, from $2.4 million for the three months ended September 30, 2020 to $7.8 million for the three months ended September 30, 2021. The program expenses increased by $4.4 million was primarily due to increased cell line development fees of $3.4 million and laboratory supplies of $0.4 million. Personnel-related expenses including stock-based compensation increased by $0.4 million was primarily due to an increase in headcount to support our research and development activities. Other research and development expenses increased by $0.6 million which was primarily related to the increase in facility maintenance costs and higher depreciation on laboratory equipment.

General and Administrative Expenses

The following table summarizes our general and administrative expenses for the three months ended September 30, 2021 and 2020 (in thousands):





                                                     Three Months Ended
                                                       September 30,
                                                   2021              2020          Change
Personnel-related expenses including
stock-based compensation                        $     1,318       $      311     $    1,007
Professional and consultant fees                      1,938              377          1,561
Facilities, fees and other related costs                516               79            437

Total general and administrative expenses $ 3,772 $ 767 $ 3,005






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General and administrative expenses increased by $3.0 million, from $0.8 million for the three months ended September 30, 2020 to $3.8 million for the three months ended September 30, 2021. Personnel-related expenses including stock-based compensation increased by $1.0 million primarily due to the increased headcount. Professional and consultant fees increased by $1.6 million primarily due to $1.1 million increase in recruiting and consulting fees to support our growth and operations to become a publicly traded company.

Other Income (Expense)

Interest income for the three months ended September 30, 2021 and 2020 was $0.1 million consisting of interest earned on invested cash and cash equivalent balances.

Other expense consists of change in fair value of the derivative liability of $2.6 million for the three months ended September 30, 2021 as a result of the Opt-In Agreement.

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

The following table summarizes our results of operations for the nine months ended September 30, 2021 and 2020 (in thousands):



                                                    Nine Months Ended
                                                      September 30,
                                                   2021           2020          Change
Operating expenses:
Research and development                        $   43,828     $    5,909     $   37,919
General and administrative                           9,463          2,406          7,057
Total operating expenses:                           53,291          8,315         44,976
Loss from operations                               (53,291 )       (8,315 )      (44,976 )
Other income (expense):
Interest income                                         16             66            (50 )
Service fee income from related party                  181              -            181
Change in fair value of derivative liability        (5,821 )            -         (5,821 )
Total other income (expense)                        (5,624 )           66         (5,690 )
Loss from equity method investment in joint
venture                                               (231 )            -           (231 )
Net loss and comprehensive loss                 $  (59,146 )   $   (8,249 )   $  (50,897 )

Research and Development Expenses

The following table summarizes our research and development expenses for the nine months ended September 30, 2021 and 2020 (in thousands):



                                                    Nine Months Ended
                                                      September 30,
                                                   2021            2020          Change

Research and development program expenses $ 37,629 $ 3,077 $ 34,552 Personnel-related expenses including stock-based compensation

                              4,158          1,797          2,361
Other research and development expenses               2,041          1,035          1,006

Total research and development expenses $ 43,828 $ 5,909 $ 37,919

Research and development expenses increased by $37.9 million, from $5.9 million for the nine months ended September 30, 2020 to $43.8 million for the nine months ended September 30, 2021. The program expenses increased by $34.6 million was primarily due to license fee of $25.0 million related to Pfizer License Agreement, license fee of $4.4 million related to LegoChem License Agreement, increased cell line development fees of $4.2 million and laboratory supplies of $0.8 million. Personnel-related expenses including stock-based compensation increased by $2.4 million, which was primarily due to higher personnel-related expenses of $1.3 million and higher stock-based compensation of $1.1 million, both of which were due to an increase in headcount to support our research and development activities. Other research and development expenses increased by $1.0 million, which primarily related to the increase in facility maintenance costs and higher depreciation on laboratory equipment.



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General and Administrative Expenses

The following table summarizes our general and administrative expenses for the nine months ended September 30, 2021 and 2020 (in thousands):



                                                    Nine Months Ended
                                                      September 30,
                                                   2021            2020          Change
Personnel-related expenses including
stock-based compensation                        $     4,378     $      805     $    3,573
Professional and consultant fees                      4,194          1,226          2,968
Facilities, fees and other related costs                891            375            516

Total general and administrative expenses $ 9,463 $ 2,406 $ 7,057

General and administrative expenses increased by $7.1 million, from $2.4 million for the nine months ended September 30, 2020 to $9.5 million for the nine months ended September 30, 2021. Personnel-related expenses including stock-based compensation increased by $3.6 million primarily due to higher personnel-related expenses of $1.4 million and higher stock-based compensation of $2.2 million, both of which were due to an increase in headcount. Professional and consultant fees increased by $3.0 million related to recruiting fees, intellectual property counsel fees, accounting fees, audit fees and corporate counsel fees, to support our growth and operations to become a publicly traded company.

Other Income (Expense)

Interest income for the nine months ended September 30, 2021 and 2020 was $0.1 million consisting of interest earned on invested cash and cash equivalent balances.

Other expense consists of change in fair value of the derivative liability of $5.8 million for the nine months ended September 30, 2021 as a result of the Opt-In Agreement. Service fee income from related party consists of income from services provided to the Voxall joint venture of $0.2 million for the nine months ended September 30, 2021.

Liquidity and Capital Resources

Overview

We had cash of $133.5 million as of September 30, 2021. For the three and nine months ended September 30, 2021 and 2020, we had net losses of $14.2 million and $3.2 million and $59.1 million and $8.2 million, respectively. As of September 30, 2021, we had an accumulated deficit of $74.9 million.

In October 2021, we completed our IPO in which we sold 10,500,000 shares of our common stock at $16.00 per share and received net proceeds of approximately $152.2 million, after deducting underwriters' discounts and commissions and other issuance costs.

We expect our expenses to increase substantially in connection with our ongoing activities, particularly as we advance the preclinical activities and clinical trials for our product candidates in development. The timing and amount of our funding requirements will depend on many factors, including:

the manufacture of product candidates, completion of our IND enabling studies and initiation of Phase 1 clinical trials for PYX-201, PYX-202 and PYX-203;



?
the timing and progress of our other preclinical and clinical development
activities;
?
the number and scope of other preclinical and clinical programs we decide to
pursue;
?
the progress of the development efforts of parties with whom we have entered or
may in the future enter into in-licensing, collaborations and research and
development agreements;
?
the costs and timing of future commercialization activities, including product
manufacturing, marketing, sales and distribution, for any of our product
candidates for which we receive marketing licensure;
?
our ability to maintain our current licenses and research and development
programs and to establish new collaboration arrangements;
?
the costs involved in prosecuting, maintaining and enforcing patent and other
intellectual property rights;
?
any delays or interruptions, including due to the COVID-19 pandemic, that we
experience in our preclinical studies, future clinical trials and/or supply
chain;
?
the cost and timing of regulatory licenses; and
?
our efforts to hire additional clinical, regulatory, scientific, operational,
financial and management personnel; and

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?

incur insurance, legal and other regulatory compliance expenses to operate as a public company.

Until such time, if ever, we can generate substantial product revenue, we expect to finance our operations through a combination of equity offerings, debt financings, collaborations, strategic alliances and marketing, distribution or licensing arrangements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect your rights as a common stockholder. Debt financing and preferred equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making acquisitions, engaging in acquisition, merger or collaboration transactions, selling or licensing our assets, making capital expenditures, redeeming our stock, making certain investments or declaring dividends.

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

Cash Flows

The following table provides information regarding our cash flows for the periods presented (in thousands):





                                              Nine Months Ended
                                                September 30,
                                              2021          2020

Net cash used in operating activities $ (23,157 ) $ (6,917 ) Net cash used in investing activities

            (590 )     (1,483 )
Net cash provided by financing activities     149,144           34




Operating Activities

During the nine months ended September 30, 2021, $23.2 million of cash used in operating activities. This was primarily attributable to our net loss of $59.1 million, partially offset by non-cash charges of $30.1 million and net change in our operating assets and liabilities of $5.8 million. The non-cash charges of $30.1 million was primarily due to the $20.0 million of research and development license fees for Pfizer paid in Series B Convertible Preferred Stock, the $5.8 million change in the fair value of derivative liability and $3.3 million in stock-based compensation. The change in our operating assets and liabilities was primarily due to an increase of $3.4 million in the derivative liability and increase in accounts payable and accrued expense of $3.8 million, partially offset by changes in prepaid and other current assets and lease payments, all of which were due to growth in our business, the advancement of our research programs, and the timing of vendor invoicing and payments.

During the nine months ended September 30, 2020, $6.9 million of cash used in operating activities. This was primarily attributable to our net loss of $8.2 million, partially offset by non-cash charges of $0.6 million and net change in our operating assets and liabilities of $0.7 million. The change in our operating assets and liabilities was primarily due to an increase of $1.1 million in accounts payable and accrued liabilities.

Investing Activities

During the nine months ended September 30, 2021 and 2020, net cash used in investing activities was $0.6 million and $1.5 million, respectively, due to purchases of property and equipment. The purchases of property and equipment consists of laboratory equipment, leasehold improvements, and furniture and fixtures. During the nine months ended September 30, 2021, we also made an investment in our joint venture, Voxall Therapeutics, LLC, for $0.1 million.

Financing Activities

During the nine months ended September 30, 2021, net cash provided by financing activities was $149.1 million, consisting primarily of net proceeds of $151.6 million from the sale of our Series B convertible preferred stock, offset by $2.5 million of deferred offering costs.

Outlook

Based on the net proceeds from our IPO of approximately $152.2 million together with our existing cash balance as of September 30, 2021 of $133.5 million and our research & development and business development plans, we expect to be able to fund our operating expenses and capital expenditure requirements into the second half of 2024. However, we have based this estimate on assumptions that may prove to be wrong, and our operating plan may change as a result of many factors currently unknown to us. In addition, we could utilize our available capital resources sooner than we expect.



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Contractual Obligations and Commitments

We lease our operating facility in Cambridge, Massachusetts under a non-cancellable operating lease agreement for our corporate headquarters and laboratory space which expires in March 2022, with a remaining lease obligation of $0.3 million.

On September 29, 2021, the Company entered into a lease agreement for an office and laboratory space in Boston, Massachusetts. The lease will expire on December 31, 2032 with future undiscounted operating lease payments (base rent) under the lease agreement of $33.8 million over an initial lease period of approximately ten years.

During 2020 and 2021, we entered into a few licensing and related agreements in the normal course of business. In accordance with the agreements, we are obligated to pay, among other items, future contingent payments, royalties, and sublicensing revenue in the future, as applicable. We have not included potential future payments due under these licensing and collaboration agreements in a table of contractual obligations because the payment obligations under this agreement are contingent upon future events.

Pursuant to the Pfizer License Agreement, we are obligated to pay future contingent payments and royalties, including up to an aggregate of $660 million in milestones for the first four licensed ADCs. Additional ADC targets may be licensed for an additional upfront fee, and such targets would be subject to additional regulatory and commercial sales milestones. Additionally, if products are launched, we will pay Pfizer tiered royalties on net sales of licensed products in varying royalty rates ranging from low single digits to mid-teens. Our royalty obligations apply on a licensed product-by-licensed product and country-by-country basis from first commercial sale until the latest to occur of: (1) 12 years from first commercial sale; (2) the expiration of all regulatory or data exclusivity; and (3) the expiration of the last valid claim of a licensed patent covering the licensed product in a country. We are also obligated to pay Pfizer a percentage of certain sublicensing revenue ranging from low-double digits to thirty percent based on the stage of development of the licensed product at the time of entering into the applicable sublicense.

Pursuant to the LegoChem License Agreement, we are obligated to pay up to an aggregate of $284.5 million to LegoChem if certain development, regulatory and sales milestones are achieved, as well as tiered royalties on net sales of licensed products ranging from mid-single digit to high single digit royalty rates. Our royalty obligations apply on a licensed product-by-licensed product and country-by-country basis until the latest to occur of: (1) the date of expiration of the last valid claim of a licensed patent covering the licensed product; (2) 10 years from first commercial sale; and (3) the expiration of regulatory or data exclusivity.

Pursuant to the University License Agreement with the University of Chicago (the "University"), we are obligated to pay to the University an annual maintenance fee of $10 thousand commencing on the third anniversary of the effective date, potential development and commercial milestones of up to an aggregate of $7.7 million as well as running royalties on net sales of licensed products at varying rates ranging from less than one percent to the low single digits, subject to a minimum annual royalty ranging from $1.0 million to $3.0 million during certain years following the first commercial sale of a licensed product. Our royalty obligations apply on a licensed product-by-licensed product and country-by-country basis until: (1) for licensed products covered by a valid claim of a licensed patent in a given country, the expiration of such valid claims; and (2) for all other licensed products, 10 years from the first commercial sale of a licensed product in a given country. We are also obligated to pay the University a percentage of certain sublicensing revenue ranging from low- to mid-teens based on the date of entering into the applicable sublicense.

We also enter into contracts in the normal course of business with CMOs, CROs and other third parties for preclinical studies. These contracts do not contain minimum purchase commitments and are cancelable by us upon prior written notice. Payments due upon cancellation consist only of payments for services provided or expenses incurred, including non-cancelable obligations of our service providers, up to the date of cancellation. These payments are not included in the table of contractual obligations above as the amount and timing of such payments are not known.

Off-Balance Sheet Arrangements

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined in the rules and regulations of the Securities and Exchange Commission.

Critical Accounting Policies and Significant Judgments and Estimates

Our condensed consolidated financial statements and the related notes thereto included elsewhere in this Quarterly Report on Form 10-Q are prepared in accordance with U.S. generally accepted accounting principles (U. S. GAAP). The preparation of condensed consolidated financial statements also requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, costs and expenses, and related disclosures. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results could differ significantly from the estimates made by management. To the extent that there are differences between our estimates and actual results, our future financial statement presentation, financial condition, results of operations, and cash flows will be affected.

There have been no significant changes to our critical accounting policies and estimates as compared to those described in "Note 2 - Summary of Significant Accounting Policies" to our audited financial statements set forth in our Final Prospectus.



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Recently Issued Accounting Pronouncements

See Note 2 to our condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q for a discussion of recent accounting pronouncements.

Other Company Information

The Jumpstart Our Business Startups Act of 2012 permits an "emerging growth company" such as us to take advantage of an extended transition period to comply with new or revised accounting standards. We have elected not to "opt out" of such extended transition period, which means that when a standard is issued or revised and it has different application dates for public or private companies, we can adopt the new or revised standard at the time private companies adopt the new or revised standard and may do so until such time that we either (i) irrevocably elect to "opt out" of such extended transition period or (ii) no longer qualify as an emerging growth company. We may choose to early adopt any new or revised accounting standards whenever such early adoption is permitted for private companies. We will continue to remain an "emerging growth company" until the earliest of the following: (1) the last day of the fiscal year following the fifth anniversary of the date of the completion of our IPO; (2) the last day of the fiscal year in which our total annual gross revenue is equal to or more than $1.07 billion; (3) the date on which we have issued more than $1 billion in nonconvertible debt during the previous three years; or (4) the date on which we are deemed to be a large accelerated filer under the rules of the SEC.

We are also a "smaller reporting company," and may continue to be a smaller reporting company for as long as either(i) the market value of our shares held by non-affiliates is less than $250 million or (ii) our annual revenue was less than $100 million during the most recently completed fiscal year and the market value of our shares held by non-affiliates is less than $700 million. If we are a smaller reporting company at the time, we cease to be an emerging growth company, we may continue to rely on exemptions from certain disclosure requirements that are available to smaller reporting companies. Specifically, as a smaller reporting company, we may choose to present only the two most recent fiscal years of audited financial statements in our Annual Report on Form 10-K and have reduced disclosure obligations regarding executive compensation, and, similar to emerging growth companies, if we are a smaller reporting company with less than $100 million in annual revenue, we would not be required to obtain an attestation report on internal control over financial reporting issued by our independent registered public accounting firm.





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