You should read the following discussion and analysis of our financial condition and results of operations together with our unaudited condensed consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q. This discussion and analysis and other parts of this Quarterly Report on Form 10-Q contain forward-looking statements based upon current beliefs, plans and expectations related to future events and our future financial performance that involve risks, uncertainties and assumptions, such as statements regarding our intentions, plans, objectives and expectations for our business. Our actual results and the timing of selected events could differ materially from those described in or implied by these forward-looking statements as a result of several factors, including those set forth under "Risk Factors" in Part II, Item 1A of this Quarterly Report on Form 10-Q. See also the section titled "Special Note Regarding Forward-Looking Statements."

Overview

We are a T cell reprogramming company dedicated to the mastery of T cells to cure patients with solid tumors. We have assembled a world-class team, comprising some of the foremost scientific leaders in the fields of oncology and ACT, including Drs. Rick Klausner, Nick Restifo, Stan Riddell and Crystal Mackall, who have each interrogated and elucidated the mechanisms of T cell biology and its interactions with cancer for decades. We believe the key to effective cell therapy is the mastery of the identity, fate and function of cells to create living medicines. We take a systematic, interrogative, cell biology-driven approach to overcome what we view as the two major barriers to successful ACT - (1) T cell exhaustion and (2) lack of durable stemness - through the application of our proprietary epigenetic and genetic reprogramming technology platforms, Gen-R and Epi-R. Our technology platforms are designed to be applied in a target and modality agnostic manner to CAR, TIL and TCR therapies to fundamentally improve the properties of T cells needed to eradicate solid tumors. We believe our autologous T cell therapies will generate improved, durable clinical outcomes that are potentially curative for patients with solid tumors.

We are utilizing our Gen-R and Epi-R technology platforms to develop a multi-modality product pipeline across several solid tumor indications with high unmet needs and anticipate having four IND submissions by the end of 2022. Each of our programs provide opportunities to expand into additional indications beyond the patient populations we are initially targeting. Our product candidates are summarized in the table below:



                     [[Image Removed: img213711897_0.jpg]]

We were incorporated in June 2018. Our primary activities to date have included developing T cell therapies, performing research and development, acquiring technology, entering into strategic collaboration and license agreements, enabling manufacturing activities in support of our product candidate development efforts, organizing and staffing the company, business planning, establishing our intellectual property portfolio, raising capital and providing general and administrative



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support for these activities. All of our programs are currently in preclinical development, and we have not yet tested any product candidates in humans and do not have any products approved for sale. Since our inception, we have incurred net losses each year. Our net losses were $62.6 million and $100.7 million for the three months ended June 30, 2021 and 2020, respectively, and $117.6 million and $129.9 million for the six months ended June 30, 2021 and 2020, respectively. As of June 30, 2021, we had an accumulated deficit of $451.8 million. Our net losses resulted primarily from our research and development programs and, to a lesser extent, general and administrative costs associated with our operations.

To date, we have funded our operations primarily from the issuance and sale of our convertible preferred stock in connection with private financings, the issuance and sale of our common stock in connection with our initial public offering (IPO) and to a lesser extent from a collaboration agreement, and we have not generated any revenue from product sales. From June 29, 2018 (inception) through June 30, 2021, we raised an aggregate of $1,405.7 million in gross proceeds from the sales of our convertible preferred stock in connection with private preferred stock financings and our common stock in connection with our IPO. As of June 30, 2021, we had cash, cash equivalents and marketable securities of $974.8 million. Based on our current operating plan, we believe that our existing cash, cash equivalents and marketable securities will be sufficient to meet our working capital and capital expenditure needs into 2025.

We anticipate that our expenses and operating losses will increase substantially over the foreseeable future. The expected increase in expenses will be driven in large part by our ongoing activities, if and as we:


continue preclinical development of our current and future product candidates
and initiate additional preclinical studies;
•
commence clinical trials of our current and future product candidates;
•
advance our Gen-R, Epi-R and cell rejuvenation technology platforms as well as
other research and development efforts;
•
attract, hire and retain qualified personnel;
•
seek regulatory approval of our current and future product candidates;
•
expand our manufacturing and process development capabilities;
•
expand our operational, financial and management systems;
•
acquire and license technology platforms;
•
continue to develop, protect and defend our intellectual property portfolio; and
•
incur additional legal, accounting, or other expenses in operating our business,
including the additional costs associated with operating as a public company.

We believe it is critically important to own, control and continuously monitor all aspects of the cell therapy manufacturing process in order to mitigate risks the field has seen, including challenges in managing production, supply chain, patient specimen chain of custody and quality control. We made a strategic decision to invest substantial capital in building our own manufacturing facility to control our supply chain, maximize efficiencies in cell product production time, cost and quality and have the ability to rapidly incorporate disruptive advancements and new innovations. Controlling manufacturing also enables us to protect proprietary aspects of our Gen-R and Epi-R technology platforms. We view our manufacturing team and capabilities as a significant competitive advantage.

In 2019, we entered into two operating lease agreements for a combined approximately 73,000 square feet of space to develop a cell therapy manufacturing facility located in Bothell, Washington. This LyFE manufacturing center has a flexible



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and modular design allowing us to produce plasmid, viral vector and T cell product to control and de-risk the sequence and timing of production of the major components of our supply chain related to our product candidates. At full staffing and capacity, we expect to be able to manufacture approximately 500 infusions per year depending on product candidate mix. We believe this capacity is sufficient to support our pipeline programs through pivotal trials and, if approved, early commercialization. We have achieved operational readiness of our LyFE manufacturing center and we have successfully completed engineering runs at scale to supply product for our upcoming clinical trials. We anticipate the facility to be cGMP qualified by the end of 2021. We anticipate continued investment in our manufacturing facility and capabilities to support our operating strategy.

The global COVID-19 pandemic continues to evolve rapidly, and we will continue to monitor it closely. The extent of the impact of the COVID-19 pandemic on our business, operations and development timelines and plans remains uncertain and will depend on future developments that cannot be predicted at this time. Such developments include the continued spread of the Delta variant in the U.S. and other countries and the potential emergence of other SARS-CoV-2 variants that may prove especially contagious or virulent, the ultimate duration of the pandemic and the resulting impact on our clinical trial plans, CROs, contract manufacturing organizations and other third parties with whom we do business, as well as its impact on regulatory authorities and our key scientific and management personnel, and the effectiveness of actions taken globally to contain and treat the disease, including the rate at which vaccinations are made available, the percentage of the population that becomes vaccinated and the effectiveness of the vaccines against Delta or other SARS-CoV-2 variants. While the implications of the COVID-19 pandemic on our operations remain uncertain, to date, we have not experienced delays in our discovery and development activities as a result of the COVID-19 pandemic. We have closely monitored the COVID-19 pandemic and have strived to follow recommended containment and mitigation measures, including the guidance from the Centers for Disease Control and Prevention (CDC) as well as the states of California and Washington and applicable counties. For most of the pandemic, essential laboratory and support employees worked in our facilities to continue and progress experiments. We implemented preventative measures at our facilities in order to minimize the risk of employee exposure to the virus, including requiring that each employee who enters a facility agree to comply with social distancing, frequent hand washing and that each employee wear masks. We also increased cleaning of high touch areas and provided hand sanitizing stations. We expect to continue such measures for the near foreseeable future. We will continue to actively monitor the situation related to the COVID-19 pandemic and may take further actions that alter our operations, including those that may be required by federal, state, or local authorities, or that we determine are in the best interests of our employees and other third parties with whom we do business. Certain designated non-essential individuals have returned to our Seattle and Bothell sites.

Our registration statement on Form S-1 related to our IPO was declared effective on June 16, 2021, and our common stock began trading on the Nasdaq Global Select Market on June 17, 2021. On June 21, 2021, we issued and sold 25,000,000 shares of common stock at an IPO price of $17.00 per share. We received $391.8 million in net proceeds, after deducting underwriting discounts and commissions of $29.8 million and offering expenses of $3.4 million. At the closing of the IPO, 194,474,431 shares of convertible preferred stock then outstanding converted into an equivalent number of shares of common stock.

We anticipate that we will need to raise additional capital in the future to fund our operations, including the further development of our product candidates and commercialization of any approved product candidates. Until such time, if ever, as we can generate significant product revenue, we expect to finance our operations with our existing cash, cash equivalents and marketable securities, any future equity or debt financings and upfront and milestone and royalties payments, if any, received under future licenses or collaborations. We may not be able to raise additional capital on terms acceptable to us or at all. If we are unable to raise additional capital when desired, our business, results of operations, and financial condition would be adversely affected.

Collaboration, License and Success Payment Agreements

Below is a summary of the key terms for certain of our collaboration and license agreements. For a more detailed description of these and our other collaboration, license and success payment agreements, see the section titled "Business-Collaboration, License and Success Payment Agreements" in the report filed with the Securities and Exchange Commission (SEC) pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended (Securities Act) on June 21, 2021 (Prospectus), and Note 3 of the notes to unaudited condensed consolidated financial statements included under Part I, Item 1 of this Quarterly Report on Form 10-Q.



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Fred Hutch

In December 2018, we entered into an exclusive license agreement with Fred Hutch to access certain intellectual property for the development of CARs and TCRs. In connection with this agreement, we paid $150,000 in cash and issued to Fred Hutch 1,075,000 shares of our common stock for total consideration of $0.8 million.

In December 2018, we entered into a research and collaboration agreement with Fred Hutch for the development of cellular immunotherapy products. Pursuant to this agreement, we are required to fund $12.0 million in research performed by Fred Hutch, and we recorded research and development expense of $1.0 million for both the three months ended June 30, 2021 and 2020, respectively, and $2.0 million for both the six months ended June 30, 2021 and 2020, respectively.

We also entered into a letter agreement with Fred Hutch in December 2018, pursuant to which we may be required to make success payments (Fred Hutch Success Payments) up to an aggregate of $200.0 million based on increases in the fair market value of our Series A convertible preferred stock, or any security into which such stock has been converted or exchanged. All shares of Series A convertible preferred stock converted into shares of common stock upon the closing of our IPO. The potential Fred Hutch Success Payments are based on multiples of increased value ranging from 10x to 50x based on a comparison of the fair value of the Company's common stock relative to the original issuance price of $1.83 at pre-determined valuation measurement dates. The Fred Hutch Success Payments can be achieved over a maximum of nine years from the effective date of the agreement. The following table summarizes the potential success payments, which are payable in cash, cash equivalents or, at our discretion, publicly-tradeable shares of our common stock:





Multiple of initial equity value at
issuance                                         10x         20x         30x         40x         50x
Per share common stock price required for
payment                                      $ 18.29     $ 36.58     $ 54.86     $ 73.15     $ 91.44

Aggregate success payment(s) (in millions) $ 10 $ 40 $ 90 $ 140 $ 200

The valuation measurement dates are triggered by the following events: the one-year anniversary of our IPO and each two-year anniversary of our IPO thereafter, the closing of a change in control transaction, and the last day of the term of the success payment agreement, unless the term has ended due to the closing of a change of control transaction.

The estimated fair value of the Fred Hutch Success Payments as of June 30, 2021 and December 31, 2020 was $24.9 million and $8.0 million, respectively. With respect to Fred Hutch Success Payments, we recognized expense of $6.9 million and $0.5 million for the three months ended June 30, 2021 and 2020, respectively, and $15.0 million and $2.6 million for the six months ended June 30, 2021 and 2020, respectively.

Stanford

In January 2019, we entered into an exclusive license agreement with Stanford to access certain intellectual property for the development of CARs and TCRs. In connection with this agreement, we paid $400,000 in cash and issued Stanford 910,000 shares of our common stock, for total consideration of $3.0 million, which was recorded as research and development expense for the year ended December 31, 2019. We are also required to pay Stanford an annual maintenance fee on the second anniversary of the agreement date, and each anniversary thereafter until the date of the first commercial sale of a licensed product. Under the agreement, we may also be required to make certain pre-specified development milestone payments up to an aggregate of $3.7 million for the first licensed product for each target, and pre- specified commercial milestone payments up to an aggregate of $2.5 million for all licensed products.

In October 2020, we entered into a research and collaboration agreement with Stanford for the development of cellular immunotherapy products. Pursuant to this agreement, we are required to fund $12.0 million in research performed by Stanford, and we recorded research and development expense of $0.8 million for the three months ended June 30, 2021 and $1.5 million for the six months ended June 30, 2021. There was no expense recorded associated with the research and collaboration agreement with Stanford for the three and six months ended June 30, 2020.

We also entered into a letter agreement with Stanford in October 2020, pursuant to which we may be required to make success payments (Stanford Success Payments) up to an aggregate of $200.0 million based on increases in the fair market value of our Series A convertible preferred stock, or any security into which such stock has been converted or



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exchanged. All shares of Series A convertible preferred stock converted into shares of common stock upon the closing of our IPO. The potential Stanford Success Payments are based on multiples of increased value ranging from 10x to 50x based on a comparison of the fair value of the Company's common stock relative to the original issuance price of $1.83 at pre-determined valuation measurement dates. The Stanford Success Payments can be achieved over a maximum of nine years from the effective date of the agreement. The following table summarizes the potential success payments, which are payable in cash, cash equivalents or, at our discretion, publicly-tradeable shares of our common stock:





Multiple of initial equity value at
issuance                                         10x         20x         30x         40x         50x
Per share common stock price required for
payment                                      $ 18.29     $ 36.58     $ 54.86     $ 73.15     $ 91.44

Aggregate success payment(s) (in millions) $ 10 $ 40 $ 90 $ 140 $ 200

The valuation measurement dates are triggered by the following events: the one-year anniversary of our IPO and each two-year anniversary of our IPO thereafter, the closing of a change in control transaction, and the last day of the term of the success payment agreement, unless the term has ended due to the closing of a change of control transaction.

The estimated fair value of the Stanford Success Payments as of June 30, 2021 and December 31, 2020 was $25.8 million and $8.9 million, respectively. With respect to Stanford Success Payments, we recognized expense of $2.4 million for the three months ended June 30, 2021 and $4.3 million for the six months ended June 30, 2021. There was no expense recorded associated with the Stanford Success Payments for the three and six months ended June 30, 2020.

GSK Collaboration Agreement

In May 2019, we entered into a collaboration agreement with GSK, amended in June 2020 (the GSK Agreement), for potential T cell therapies that apply our platform technologies and cell therapy innovations to TCRs or CARs under distinct collaboration programs. Pursuant to the GSK Agreement, we received an upfront payment of $45.0 million which was recorded as deferred revenue and revenue is recognized as the research and development services are rendered. For potential TCR or CAR therapies that are the subject of a collaboration program under the GSK Agreement, we are responsible for certain research and development activities, at our cost, up to GSK's option point. These are expensed as research and development as incurred. Generally, each party is responsible for its own cost and expense to conduct each collaboration program. In April 2021, GSK exercised its option to the NY-ESO-1 TCR with Gen-R program and GSK will assume responsibility for future research and development of this program at its cost and expense. We are eligible to receive up to two one-time payments, totaling approximately $200.0 million in aggregate, for technology validation of Lyell's cell therapy innovations. For each cell therapy target for which there has been a joint collaboration program, we also could receive up to approximately $400.0 million in aggregate in development and sales milestones for a target that is already within GSK's pipeline and meets certain criteria, up to approximately $900.0 million in aggregate in development and sales milestones for all other targets, and tiered royalties on a per-product basis ranging from low to high single digits for targets that are already within GSK's pipeline and meet certain criteria, or from high single digit to low teens for all other targets. Royalties and milestones are paid once per target, even if there is more than one Lyell innovation applied to a T cell therapy directed to that target.

NCI License Agreement

In December 2020, we entered into a license agreement with NCI to access certain intellectual property for the development of treatment of human cancers. In connection with this agreement, we paid $100,000 upfront, and a prorated annual maintenance payment for 2020 of approximately $3,100, for total consideration of approximately $103,100, which was recorded in research and development expense for the year ended December 31, 2020. We are also required to pay NCI annual maintenance payments which may be credited against earned royalties. Under the agreement, we may also be required to make certain prespecified development milestone payments up to an aggregate of $3.1 million, and pre-specified commercial milestone payments up to a maximum aggregate of $12.0 million for all licensed products. In June 2021 we entered into an amendment to the license agreement with NCI to include additional intellectual property and one additional inventor. In connection with this amendment, we paid $25,000 upfront, which was recorded in research and development expense. Under the amendment, we may also be required to pay prespecified additional development milestone payments of $75,000.



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Components of Operating Results

Revenue

We have no products approved for sale and have never generated any revenue from product sales.

To date, we have generated revenue primarily from the recognition of a portion of the upfront payment under the GSK Agreement that we entered into in May 2019. As we continue to conduct research under the GSK Agreement, we will recognize revenue based upon our estimate of the progress made as well as potential future license revenue. In the future, we may generate additional revenue from other collaborations, strategic alliances, licensing agreements, product sales, or a combination of these.



Operating Expenses

Research and Development

To date, research and development expenses consist of costs incurred by us for the discovery and development of our technology platforms and product candidates and includes costs incurred in connection with strategic collaborations, costs to license technology, personnel-related costs, including stock-based compensation expense, facility and technology related costs, research and laboratory expenses, as well as other expenses, which include consulting fees and other costs. Upfront payments and milestones paid to third parties in connection with technology platforms which have not reached technological feasibility and do not have an alternative future use are expensed as incurred.

Research and development expenses also include non-cash expense related to the change in the estimated fair value of the liabilities associated with our success payments granted to Fred Hutch and Stanford. See the subsection titled "-Critical Accounting Policies and Significant Judgments and Estimates-Success Payments" included in the Prospectus. Research and development expenses related to our success payment liabilities are unpredictable and may vary significantly from quarter to quarter and year to year due to changes in our assumptions used in the calculation.

We deploy our employee and infrastructure resources across multiple research and development programs for identifying and developing product candidates and establishing manufacturing capabilities. Due to the stage of development and number of ongoing programs and our ability to use resources across several programs, most of our research and development costs are not recorded on a program-specific basis. These include costs for personnel, laboratory and other indirect facility and operating costs.

Research and development activities account for a significant portion of our operating expenses. We anticipate that our research and development expenses will increase over the foreseeable future as we expand our research and development efforts including completing preclinical studies, commencing clinical trials, completing clinical trials, seeking regulatory approval of our product candidates, identifying new product candidates, and incurring costs to acquire and license technology platforms. A change in the outcome of any of these variables could mean a significant change in the costs and timing associated with the development of our product candidates. Because all of our product candidates are still in preclinical development and the outcome of these efforts is uncertain, we cannot estimate the actual amounts necessary to successfully complete the preclinical development, clinical development and commercialization of product candidates or whether, or when, we may achieve profitability.

Our research and development expenses may vary significantly based on factors such as:


the number and scope of preclinical and IND-enabling studies;
•
per patient trial costs;
•
the number of trials required for approval;

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the number of sites included in the trials;
•
the countries in which the trials are conducted;
•
the length of time required to enroll eligible patients;
•
the number of patients that participate in the trials;
•
the drop-out or discontinuation rates of patients;
•
potential additional safety monitoring requested by regulatory agencies;
•
the duration of patient participation in the trials and follow-up;
•
the cost and timing of manufacturing our product candidates;
•
the phase of development of our product candidates;
•
the efficacy and safety profile of our product candidates;
•
the extent to which we establish additional collaboration or license agreements;
and
•
whether we choose to partner any of our product candidates and the terms of such
partnership.

A change in the outcome of any of these variables with respect to the development of any of our product candidates could significantly change the costs and timing associated with the development of that product candidate. We may never succeed in obtaining regulatory approval for any of our product candidates. We may obtain unexpected results from our preclinical studies and future clinical trials.

General and Administrative

General and administrative costs include personnel-related expenses, including stock-based compensation expense, for personnel in executive, legal, finance and other administrative functions, legal costs, transaction costs related to collaboration and licensing agreements, as well as fees paid for accounting and tax services, consulting fees and facilities costs not otherwise included in research and development expenses. Legal costs include those related to corporate and patent matters.

We anticipate that our general and administrative expenses will increase over the foreseeable future to support our continued research and development activities, operations generally, future business development opportunities, consulting fees, as well as due to the increased costs of operating as a public company such as costs related to accounting, audit, legal, regulatory and tax-related services associated with maintaining compliance with exchange listing and SEC requirements, director and officer insurance costs and investor and public relations costs.

Other Operating Income, Net

Other operating income, net, consists primarily of service and occupancy fees received associated with subleases as well as losses on the sales of property and equipment.



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Interest Income

Interest income consists primarily of interest earned on our cash, cash equivalents and marketable securities balance.

Other (Expense) Income, Net

Other (expense) income, net, consists primarily of changes in the fair value of an equity warrant investment held.

Deemed Dividends Upon Repurchase of Convertible Preferred Stock

For the six months ended June 30, 2020, deemed dividends upon repurchase of convertible preferred stock consists of the amount by which the cash paid for the repurchase of convertible preferred stock exceeded the carrying value of such convertible preferred stock.

Results of Operations

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



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



                                         Three Months Ended June 30,
                                          2021                 2020              Change
Revenue                              $        2,628       $         3,118     $        (490 )
Operating expenses (income):
Research and development                     46,446                97,152           (50,706 )
General and administrative                   19,112                 9,562             9,550
Other operating income, net                    (223 )              (1,030 )             807
Total operating expenses                     65,335               105,684           (40,349 )
Loss from operations                        (62,707 )            (102,566 )          39,859
Interest income                                 218                 1,881            (1,663 )
Other (expense) income, net                    (106 )                  29              (135 )
Net loss and net loss attributed
to common
   stockholders                      $      (62,595 )     $      (100,656 )   $      38,061




Revenue

Revenue was $2.6 million and $3.1 million for the three months ended June 30, 2021 and 2020, respectively. Revenue recognized for the three months ended June 30, 2021 and 2020 was primarily related to the recognized portion of the upfront license fee pursuant to the GSK Agreement, which was effective in July 2019. The decrease of $0.5 million is due to changes in research and development activities under the GSK Agreement for the three months ended June 30, 2021 compared to the three months ended June 30, 2020.



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Research and Development Expenses

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



                                              Three Months Ended June 30,
                                               2021                 2020             Change
Personnel                                 $       17,841       $       14,253     $       3,588
Facilities and technology                          9,460                5,328             4,132
Success payments                                   9,266                  487             8,779
Research and laboratory                            5,622                4,014             1,608
Collaborations and licenses                        2,841               72,756           (69,915 )
Other                                              1,416                  314             1,102

Total research and development expenses $ 46,446 $ 97,152 $ (50,706 )

Research and development expenses were $46.4 million and $97.2 million for the three months ended June 30, 2021 and 2020, respectively. The decrease of $50.7 million was primarily due to:


a decrease in collaborations and licenses costs of $69.9 million, primarily due
to the commitment agreement upfront payment to PACT of $63.6 million, consisting
of the $50.0 million upfront payment and $13.6 million deemed to be the
difference between the purchase price of the preferred stock shares we purchased
from PACT and the associated value of the preferred shares, and $7.5 million in
acquired in-process research and development expense related to the asset
acquisition of Immulus, Inc. (Immulus), recorded for the three months ended June
30, 2020;
•
an increase of $8.8 million associated with our Fred Hutch and Stanford success
payments liabilities primarily due to the increase in the per share fair value
of our common stock;
•
an increase in facilities and technology costs of $4.1 million primarily related
to increased infrastructure to support the expansion of our research and
development and manufacturing capabilities and associated headcount growth;
•
an increase in personnel-related expenses of $3.6 million, which was primarily
related to an increase in headcount to expand our research and development and
manufacturing capabilities;
•
an increase in research and laboratory expenses of $1.6 million, including
laboratory supplies, preclinical studies, and other external research expenses;
and
•
an increase in other research and development expenses of $1.1 million, which
was primarily related to an increase in consulting expenses.

General and Administrative Expenses

General and administrative expenses were $19.1 million and $9.6 million for the three months ended June 30, 2021 and 2020, respectively. The increase of $9.6 million was primarily due to an increase of $7.9 million in stock-based compensation expense primarily related to award accelerations and new awards granted. Additionally, corporate expenses increased $0.6 million primarily due to the costs associated with operating as a public company.

Interest Income

Interest income was $0.2 million and $1.9 million for the three months ended June 30, 2021 and 2020, respectively. The decrease of $1.7 million was primarily due to lower interest rates on cash, cash equivalents and marketable securities balances.



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Comparison of the Six Months Ended June 30, 2021 and 2020



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



                                         Six Months Ended June 30,
                                          2021                2020             Change
Revenue                              $        5,073       $       4,374     $         699
Operating expenses (income):
Research and development                     87,975             122,652           (34,677 )
General and administrative                   35,943              18,442            17,501
Other operating income, net                    (768 )            (1,150 )             382
Total operating expenses                    123,150             139,944           (16,794 )
Loss from operations                       (118,077 )          (135,570 )          17,493
Interest income                                 572               4,222            (3,650 )
Other (expense) income, net                    (133 )             1,452            (1,585 )
Net loss                             $     (117,638 )     $    (129,896 )   $      12,258
Net loss attributed to common
stockholders:
Net loss                             $     (117,638 )     $    (129,896 )   $      12,258
Deemed dividends upon repurchase
of
  convertible preferred stock                     -              (3,582 )           3,582
Net loss attributed to common
stockholders                         $     (117,638 )     $    (133,478 )   $      15,840




Revenue

Revenue was $5.1 million and $4.4 million for the six months ended June 30, 2021 and 2020, respectively. Revenue recognized for the six months ended June 30, 2021 and 2020 was primarily related to the recognized portion of the upfront license fee pursuant to the GSK Agreement, which was effective in July 2019. The increase of $0.7 million is primarily due to increased research and development activities under the GSK Agreement for the six months ended June 30, 2021 compared to the six months ended June 30, 2020.

Research and Development Expenses

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





                                              Six Months Ended June 30,
                                              2021                2020           Change
Personnel                                 $     32,673       $       25,008     $   7,665
Success payments                                19,233                2,558        16,675
Facilities and technology                       16,997               10,955         6,042
Research and laboratory                         10,098                8,958         1,140
Collaborations and licenses                      6,855               74,598       (67,743 )
Other                                            2,119                  575         1,544

Total research and development expenses $ 87,975 $ 122,652 $ (34,677 )

Research and development expenses were $88.0 million and $122.7 million for the six months ended June 30, 2021 and 2020, respectively. The decrease of $34.7 million was primarily due to:

a decrease in collaborations and licenses costs of $67.7 million, primarily due to the commitment agreement upfront payment to PACT of $63.6 million, consisting of the $50.0 million upfront payment and $13.6 million deemed to be the difference between the purchase price of the preferred stock shares we purchased from PACT and the associated value of the preferred shares, and $7.5 million in acquired in-process research and



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development expense related to the asset acquisition of Immulus, Inc. (Immulus),
recorded for the six months ended June 30, 2020;
•
an increase of $16.7 million associated with our Fred Hutch and Stanford success
payments liabilities primarily due to the increase in the per share fair value
of our common stock;
•
an increase in personnel-related expenses of $7.7 million, including $2.9
million of stock- based compensation expense, which was primarily related to an
increase in headcount to expand our research and development and manufacturing
capabilities;
•
an increase in facilities and technology costs of $6.0 million primarily related
to increased infrastructure to support the expansion of our research and
development and manufacturing capabilities and associated headcount growth;
•
an increase in other research and development expenses of $1.5 million, which
was primarily related to an increase in consulting expenses; and
•
an increase in research and laboratory expenses of $1.1 million, including
laboratory supplies, preclinical studies, and other external research expenses.

General and Administrative Expenses

General and administrative expenses were $35.9 million and $18.4 million for the six months ended June 30, 2021 and 2020, respectively. The increase of $17.5 million was primarily due to an increase of $14.6 million in stock-based compensation expense primarily related to award modifications, accelerations and new awards granted. Additionally, corporate expenses increased $0.7 million primarily due to the costs associated with operating as a public company.

Interest Income

Interest income was $0.6 million and $4.2 million for the six months ended June 30, 2021 and 2020, respectively. The decrease of $3.7 million was primarily due to lower interest rates on cash, cash equivalents and marketable securities balances.

Other Income (Expense), Net

For the three and six months ended June 30, 2021, other income (expense), net, consisted primarily of the changes in fair value of an equity warrant investment.

Liquidity and Capital Resources

Sources of Liquidity

Since our inception, we have funded our operations primarily through the sale of convertible preferred stock and the sale of common stock in connection with our IPO. From June 29, 2018 (inception) through June 30, 2021, we raised an aggregate of $1,405.7 million in gross proceeds from the sales of our convertible preferred stock in connection with preferred stock financings and common stock in connection with our IPO. As of June 30, 2021, we had $974.8 million in cash, cash equivalents and marketable securities. Since our inception, we have incurred significant operating losses. We have not yet commercialized any product candidates and we do not expect to generate revenue from sales of any product candidates for a number of years, if ever. We had an accumulated deficit of $451.8 million as of June 30, 2021.



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Future Funding Requirements

We expect to incur additional losses in the foreseeable future as we conduct and expand our research and development efforts, including conducting preclinical studies and clinical trials, developing new product candidates, establishing internal manufacturing capabilities and funding our operations generally. Based on our current operating plan, we believe that our existing cash, cash equivalents and marketable securities will be sufficient to meet our working capital and capital expenditure needs into 2025. However, we anticipate that we will need to raise additional capital in the future to fund our operations, including the further development of our product candidates and commercialization of any approved product candidates. We are subject to the risks typically related to the development of new products, and we may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business.

Our future capital requirements will depend on many factors, including:


the scope, timing, progress, costs and results of discovery, preclinical
development and clinical trials for our current and future product candidates;
•
the number of clinical trials required for regulatory approval of our current
and future product candidates;
•
the costs, timing and outcome of regulatory review of any of our current and
future product candidates;
•
the cost of manufacturing clinical and commercial supplies of our current and
future product candidates;
•
the costs and timing of future commercialization activities, including
manufacturing, marketing, sales and distribution, for any of our product
candidates for which we receive marketing approval;
•
further investment to build additional manufacturing facilities or expand the
capacity of our existing ones;
•
the costs and timing of preparing, filing and prosecuting patent applications,
maintaining and enforcing our intellectual property rights and defending any
intellectual property-related claims;
•
our ability to maintain existing, and establish new, collaborations, licenses,
product acquisitions or other strategic transactions and the fulfillment of our
financial obligations under any such agreements, including the timing and amount
of any success payment, future contingent, milestone, royalty, or other payments
due under any such agreement;
•
the revenue, if any, received from commercial sales of our product candidates
for which we receive marketing approval;
•
expenses to attract, hire and retain, skilled personnel;
•
the costs of operating as a public company;
•
addressing any potential interruptions or delays resulting from factors related
to the COVID-19 pandemic;
•
addressing or responding to any potential disputes or litigation; and
•
the extent to which we acquire or invest in businesses, products and technology
platforms.

Until such time as we complete preclinical and clinical development and receive regulatory approval of our product candidates and can generate significant revenue from product sales, if ever, we expect to finance our operations from the



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sale of additional equity or debt financings, or other capital which come in the form of strategic collaborations, licensing, or other arrangements. In the event that additional capital is required, we may not be able to raise it on terms acceptable to us, or at all. If we raise additional funds through the issuance of equity or convertible debt securities, it may result in dilution to our existing stockholders. Debt financing or preferred equity financing, if available, may result in increased fixed payment obligations, and the existence of securities with rights that may be senior to those of our common stock. If we incur indebtedness, we could become subject to covenants that would restrict our operations. If we raise funds through strategic collaboration, licensing, or other arrangements, we may relinquish significant rights or grant licenses on terms that are not favorable to us. Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the United States and worldwide resulting from the ongoing COVID-19 pandemic and otherwise. If we are unable to raise additional capital when desired, our business, results of operations and financial condition would be adversely affected.

Cash Flows



The following table summarizes our cash flows for the periods indicated (in
thousands):



                                                         Six Months Ended June 30,
                                                          2021                2020
Net cash (used in) provided by:
Operating activities                                 $      (67,544 )     $    (112,514 )
Investing activities                                         97,203            (215,958 )
Financing activities                                        394,376             476,417
Net increase in cash, cash equivalents and
restricted cash                                      $      424,035       $     147,945




Operating Activities

During the six months ended June 30, 2021, net cash used in operating activities was $67.5 million, consisting primarily of our net loss of $117.6 million, partially offset by non-cash adjustments to reconcile net loss to net cash used in operating activities of $55.4 million. These adjustments consisted primarily of stock-based compensation expense of $28.0 million, $19.2 million for revaluation of our success payment liabilities to Fred Hutch and Stanford, depreciation and amortization expense of $5.0 million and $1.9 million in non-cash lease expense. Additionally, net operating assets decreased $5.3 million, which included $5.1 million of non-cash revenue recognized for the six months ended June 30, 2021.

During the six months ended June 30, 2020, net cash used in operating activities was $112.5 million, consisting primarily of our net loss of $129.9 million, partially offset by non-cash adjustments to reconcile net loss to net cash used in operating activities of $20.2 million. These adjustments consisted primarily of stock-based compensation expense of $10.5 million, non-cash expense in connection with an asset acquisition of $3.5 million, non-cash lease expense of $3.3 million, $2.6 million for revaluation of our success payment liabilities to Fred Hutch, and depreciation and amortization of $1.7 million, partially offset by the change in fair value of an equity warrant investment of $1.3 million. Additionally, net operating assets decreased $2.8 million, which included $4.4 million of non-cash revenue recognized for the six months ended June 30, 2020.

Investing Activities

During the six months ended June 30, 2021, cash provided by investing activities was $97.2 million, consisting of net sales and maturities of marketable securities of $140.8 million partially offset by purchases of property and equipment of $43.6 million.

During the six months ended June 30, 2020, cash used in investing activities was $216.0 million, consisting of net purchases of marketable securities of $165.6 million, purchases of other investments of $36.4 million and purchases of property and equipment of $14.0 million.



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Financing Activities

During the six months ended June 30, 2021, cash provided by financing activities was $394.4 million, consisting of $392.9 million in net proceeds from the sale of our common stock in our IPO and $1.5 million in proceeds from the exercise of stock options.

During the six months ended June 30, 2020, cash provided by financing activities was $476.4 million, consisting of $492.5 million in net proceeds from the sale of our convertible preferred stock, partially offset by the repurchase of preferred and common stock of $16.1 million.

Contractual Obligations and Commitments

There have been no material changes outside the ordinary course of business to our contractual obligations and commitments as compared to those described in "Management's Discussion and Analysis of Financial Condition and Results of Operations" set forth in the Prospectus.

Off-Balance Sheet Arrangements

Since our inception, we did not have, and we do not currently have, any off-balance sheet arrangements as defined under the rules and regulations of the SEC.

JOBS Act Accounting Election

We are an "emerging growth company," as defined in the JOBS Act. For so long as we remain an emerging growth company, we are permitted and intend to rely on certain exemptions from various public company reporting requirements, including not being required to have our internal control over financial reporting audited by our independent registered public accounting firm pursuant to Section 404, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statement, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and any golden parachute payments not previously approved. In addition, under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. We have elected to use the extended transition period in which we remain an emerging growth company; however, we may adopt certain new or revised accounting standards early. Accordingly, the information contained herein may be different than the information you receive from other public companies in which you hold stock.

Critical Accounting Policies and Significant Judgments and Estimates

Our unaudited condensed consolidated financial statements are prepared in accordance with GAAP. The preparation of these consolidated 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 unaudited condensed consolidated financial statements, as well as the reported revenue 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.

There have been no material changes to our critical accounting policies and estimates as compared to those described in "Management's Discussion and Analysis of Financial Condition and Results of Operations" set forth in the Prospectus, with the exception of revenue recognition related to licenses of intellectual property in the three months ended June 30, 2021.



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Revenue

We recognize revenue when our customer obtains control of promised goods or services, in an amount that reflects the consideration which we expect to receive in exchange for those goods and services. To determine revenue recognition for arrangements within the scope of Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers, (ASC 606), we perform the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the performance obligation is satisfied.

In applying the ASC 606 framework, we must apply judgment to determine the nature of the promises within a revenue contract and whether those promises represent distinct performance obligations. In determining the transaction price, we do not include amounts subject to uncertainties unless it is probable that there will be no significant reversal of cumulative revenue when the uncertainty is resolved. Milestone and other forms of variable consideration that we may earn are subject to significant uncertainties of research and development related achievements, which generally are deemed to be not probable until such milestones are actually achieved. For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and the license is deemed to be the predominant item to which the royalties relate, we recognize revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). Additionally, we develop assumptions that require judgment to determine the standalone selling price of each performance obligation identified in the contract. We then allocate the total transaction price to each performance obligation based on the estimated standalone selling prices of each performance obligation, for which we recognize revenue as or when the performance obligations are satisfied. At the end of each subsequent reporting period, we re-evaluate the variable consideration and any related constraint and, if necessary, adjust our estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis. Under our license agreements, we grant the license to a customer as it exists at the point of transfer and the nature of the license is a right to use our intellectual property as transferred. If the license to our intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, we recognize revenue from non-refundable, upfront fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time.

For research and development services, revenue allocated to performance obligations is recognized using an estimate of the percentage of completion of the project based on the costs incurred on the project as a percentage of the total expected costs. The determination of the percentage of completion requires management to estimate the costs to complete the project. A detailed estimate of the costs to complete is reassessed every reporting period based on the latest project plan and discussions with project teams. If a change in facts or circumstances occurs, the estimate will be adjusted and the revenue will be recognized based on the revised estimate. The difference between the cumulative revenue recognized based on the previous estimate and the revenue recognized based on the revised estimate would be recognized as an adjustment to revenue in the period in which the change in estimate occurs. Determining the estimate of the cost-to-complete requires significant judgment and may have a significant impact on the amount and timing of revenue recognition.

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