You should read the following discussion and analysis of our financial condition and results of operations together with our condensed consolidated financial statements and the related notes included elsewhere in this Quarterly Report on Form 10-Q. This discussion and other parts of this Quarterly Report on Form 10-Q contain forward-looking statements that involve risks and uncertainties, such as statements of our plans, objectives, expectations and intentions. As a result of many factors, including those factors set forth in the "Risk Factors" section of this Quarterly Report on Form 10-Q, our actual results could differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Overview

We are a clinical-stage precision medicines company transforming the drug discovery process by combining leading-edge computational and experimental technologies with the goal of bringing life-changing therapies to patients. We are among the first of a new breed of biotech created at the intersection of disparate disciplines. Our Dynamo™ platform integrates an array of leading-edge computational and experimental approaches designed to drug protein targets that have previously been intractable, or inadequately addressed. Our initial focus is on enhancing small molecule therapeutic discovery in targeted oncology and genetic disease indications.

We are advancing a pipeline of medicines to address targets in precision oncology, including our lead product candidates, RLY-4008, RLY-2608 and RLY-1971.



   •  RLY-4008. In the third quarter of 2020, we initiated a first-in-human
      clinical trial for RLY-4008, our inhibitor of fibroblast growth factor
      receptor 2, or FGFR2, focusing on patients with advanced solid tumors having
      oncogenic FGFR2 alterations. In October 2021, we announced interim clinical
      data from this trial. We believe the interim clinical data as of the data
      cut-off date of September 9, 2021, or the Interim Data Cut-off Date, suggest
      robust inhibition of FGFR2 in the first 49 subjects that was not shown to be
      limited by off-target toxicities, including hyperphosphatemia and diarrhea.
      The initial toxicity data suggest that certain dose levels of RLY-4008
      administered can achieve >85% continuous inhibition of FGFR2. At those
      levels, acute toxicities that would limit dose intensity have generally not
      been observed as of the Interim Data Cut-off Date. Approximately 80% of all
      patients treated achieved reductions in tumor size as of the Interim Data
      Cut-off Date, which was observed across dose levels, tumor types and FGFR2
      alterations and line of treatment.


   •  RLY-2608. In 2021, we initiated Investigational New Drug, or IND, enabling
      studies for RLY-2608, our inhibitor of cancer-associated mutant variants
      H1047X, E542X and E545X of phosphoinostide 3-kinase alpha, or PI3K?.
      RLY-2608 is the lead program of multiple preclinical efforts to discover and
      develop mutant selective inhibitors of PI3K?. In October 2021, we also
      announced preclinical data for RLY-2608, which showed that in preclinical
      models, RLY-2608 preferentially binds mutant PI3K? at a novel allosteric
      site discovered by our Dynamo platform. In biochemical and cellular assays,
      RLY-2608 inhibited the three major classes of PI3K? oncogenic mutations
      (H1047X, E542X and E545X) while sparing wild-type PI3K?.


   •  RLY-1971. We initiated a Phase 1 clinical trial for RLY-1971, our inhibitor
      of Src homology region 2 domain-containing phosphatase-2, or SHP2, in
      patients with advanced solid tumors in the first quarter of 2020. In
      December 2020, we entered into a global collaboration and license agreement,
      or the Genentech Agreement, with Genentech, Inc., a member of the Roche
      Group, or Genentech, for the development and commercialization of RLY-1971.
      In July 2021, Genentech initiated the cohort of RLY-1971 in combination with
      GDC-6036, its KRASG12C inhibitor, in a phase 1b trial.

While our initial focus is on precision oncology, we believe our Dynamo platform may also be broadly applied to other areas of precision medicine, such as genetic disease indications. In addition to the three product candidates described above, we have five discovery stage programs across both precision oncology and genetic disease. We are focused on using the novel insights derived from our approach to transform the lives of patients suffering from debilitating and life-threatening diseases through the discovery, development and commercialization of our therapies.

We were incorporated in May 2015. We have devoted substantially all of our resources to developing our lead product candidates, developing our innovative computational and experimental approaches on protein motion, building our intellectual property portfolio, business planning, raising capital and providing general and administrative support for these operations. To date, we have principally financed our operations through private placements of preferred stock, convertible debt and proceeds from public offerings of our common stock. Additionally, in 2021, we received an aggregate of $80.0 million in connection with the Genentech Agreement.

In October 2021, we completed a public offering, or the October 2021 Offering, of 15,188,679 shares of common stock, including the exercise in full of the underwriters' option to purchase an additional 1,981,132 shares, at an offering price of $26.50 per share, for estimated net proceeds of $381.9 million, after deducting underwriting discounts and commissions and other estimated offering expenses. In July 2020, we closed our initial public offering, or IPO, and issued 23,000,000 shares of our common stock at a price of $20.00 per share for net proceeds of $425.3 million, after deducting underwriting discounts and commissions and offering expenses. Prior to our IPO, we had received gross proceeds of approximately $520.0 million from sales of our preferred stock and our issuance of convertible debt.

In December 2020, we entered into the Genentech Agreement with Genentech, for the development and commercialization of RLY-1971. Under the terms of the Genentech Agreement, we received $75.0 million in an upfront payment in January 2021. In April 2021, we completed the transfer of the IND application for RLY-1971 to Genentech upon which we received the associated milestone payment of $5.0 million in May 2021. We are eligible to receive an additional $20.0 million in near-term payments; and, if we do not opt into a U.S. profit/cost share, up to $695.0 million in additional development, commercialization and sales-based milestones for RLY-1971; and tiered



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royalties on annual global net sales (on a country-by-country basis), anticipated to be in the low-to-mid-teens, subject to reductions in certain circumstances. Additionally, we are eligible to receive additional royalties in the event of regulatory approval of RLY-1971 and Genentech's compound, GDC-6036, that directly binds to and inhibits KRAS G12C, in combination. We have the right to opt-in to a 50/50 U.S. profit/cost share and if we do opt into the U.S. profit/cost share, we are eligible to receive up to $410.0 million in additional commercialization and sales-based milestones for RLY-1971 outside of the U.S. and tiered royalties on annual net sales outside of the U.S. (on a country-by-country basis), anticipated to be in the low-to-mid-teens, subject to reduction in certain circumstances. We also retain the right to develop RLY-1971 in combination with our FGFR2 and PI3K? programs.

On April 15, 2021, we entered into an Agreement and Plan of Merger, or the Merger Agreement, and on April 22, 2021, we acquired ZebiAI Therapeutics, Inc., or ZebiAI. Pursuant to the Merger Agreement, we were required to pay ZebiAI's former stockholders, option holders and warrant holders, or the ZebiAI Holders, upfront consideration in an aggregate amount of approximately $85.0 million, excluding customary purchase price adjustments, composed of approximately $20.0 million payable in cash and approximately $65.0 million payable in shares of our common stock. In addition, (i) the ZebiAI Holders will be eligible to receive up to an additional $85.0 million in milestone payments upon the achievement of certain platform or program-related milestones, payable in our common stock and (ii) we will pay to the ZebiAI Holders 10% of the payments we receive within three years of the closing date of the Merger Agreement from partnering, collaboration or other agreements related to ZebiAI's platform up to an aggregate maximum amount of $100.0 million, payable in cash.

In August 2021, we entered into a discovery collaboration agreement with EQRx, Inc., or EQRx, to discover, develop, and commercialize novel medicines against validated oncology targets. Under the terms of the agreement, we will be responsible for the discovery phase through to IND application filing, while EQRx will be responsible for clinical development, regulatory and commercialization efforts of the product candidates developed pursuant to the collaboration. Subject to certain opt-out rights, we and EQRx will equally share in the discovery, development and commercialization costs and the net profits from sales of any collaboration medicines, if approved. We retain the right to develop any collaboration medicines in combination with our wholly-owned pipeline.

The current COVID-19 pandemic has presented a substantial public health and economic challenge around the world and continues to affect our employees, patients, communities and business operations.

While we are currently continuing the clinical trials we have underway, we expect that COVID-19 precautions may directly or indirectly impact the timeline for some of our clinical trials. To date, we have been able to continue to enroll our patients in first-in-human clinical trials for RLY-1971 and RLY-4008, and we currently do not anticipate any interruptions in clinical enrollment. However, we are continuing to assess the potential impact of the COVID-19 pandemic on our current and future business and operations, including our expenses and clinical trials, as well as on our industry and the healthcare system.

Since our inception, we have incurred significant operating losses on an aggregate basis. Our ability to generate product revenue sufficient to achieve profitability will depend on the successful development and eventual commercialization of one or more of our current or future product candidates. Our net losses were $296.4 million and $87.7 million for the nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, we had an accumulated deficit of $700.6 million. These losses have resulted primarily from costs incurred in connection with research and development activities, licensing and patent investment and general and administrative costs associated with our operations. We expect to continue to incur significant expenses, including the costs of operating as a public company, and generate increasing operating losses for at least the next several years.

We anticipate that our expenses will increase substantially if and as we:



   •  conduct our current and future clinical trials of RLY-4008, future clinical
      trials of RLY-2608 and additional preclinical research and development of
      our PI3K? mutant selective inhibitor programs and other early-stage
      programs;


   •  initiate and continue research and preclinical and clinical development of
      our other product candidates;


  • seek to identify additional product candidates;


   •  pursue marketing approvals for any of our product candidates that
      successfully complete clinical trials, if any;


   •  establish a sales, marketing and distribution infrastructure to
      commercialize any products for which we may obtain marketing approval;


   •  require the manufacture of larger quantities of our product candidates for
      clinical development and potentially commercialization;


  • obtain, maintain, expand and protect our intellectual property portfolio;


  • acquire or in-license other drugs and technologies;


   •  hire and retain additional clinical, regulatory, quality and scientific
      personnel;


   •  build out new facilities or expand existing facilities to support our
      ongoing development activity; and


   •  add operational, financial and management information systems and personnel,
      including personnel to support our drug development, any future
      commercialization efforts and our operations as a public company.


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In addition, if we obtain marketing approval for any of our lead product candidates, we expect to incur significant commercialization expenses related to product manufacturing, marketing, sales and distribution.

As a result, we will need additional financing to support our continuing operations. Until such time as we can generate significant revenue from product sales, if ever, we expect to finance our operations through a combination of public or private equity or debt financings or other sources, which may include collaborations with third parties. We may be unable to raise additional funds or enter into such other agreements or arrangements when needed, on favorable terms, or at all. If we fail to raise capital or enter into such agreements as and when needed, we may have to significantly delay, scale back or discontinue the development or commercialization of one or more of our product candidates.

Because of the numerous risks and uncertainties associated with product development, we are unable to predict the timing or amount of increased expenses or when or if we will be able to achieve or maintain profitability. Even if we are able to generate revenue from product sales, we may not become profitable. If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and may be forced to reduce or terminate our operations.

We believe our cash, cash equivalents and investments of $616.5 million as of September 30, 2021, together with the net proceeds of $381.9 million from the October 2021 Offering, will enable us to fund our operating expenses and capital expenditure requirements into at least 2025. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect. We will need to raise additional capital in the future to continue developing the drugs in our pipeline and to commercialize any approved drug. We may seek to obtain additional financing in the future through the issuance of our common stock, through other equity or debt financings or through collaborations or partnerships with other companies. We may not be able to raise additional capital on terms acceptable to us, or at all, and any failure to raise capital as and when needed could compromise our ability to execute on our business plan.

Components of our Results of Operations

Revenue

Our revenue consists primarily of amounts related to the Genentech Agreement. We recognize our revenue as the performance obligations are satisfied under the agreement.

Operating Expenses

Our operating expenses since inception have consisted solely of research and development costs and general and administrative costs.

Research and Development Expenses.

Research and development expenses include:



   •  salaries, benefits and other employee related costs, including stock-based
      compensation expense, for personnel engaged in research and development
      functions;


   •  costs of outside consultants, including their fees, stock-based compensation
      and related travel expenses;


   •  expenses incurred under agreements with contract research organizations, or
      CROs, contract manufacturing organizations, or CMOs, and other vendors that
      conduct our clinical trials and preclinical activities;


   •  costs of acquiring, developing and manufacturing clinical trial materials
      and lab supplies;


   •  acquisition of in-process research and development assets that have no
      alternative future use;


  • costs related to compliance with regulatory requirements; and


   •  facility costs, depreciation and other expenses, which include direct and
      allocated expenses for rent and maintenance of facilities, insurance and
      other supplies.

We expense research and development costs as the services are performed or the goods are received. We recognize costs for certain development activities, such as clinical trials, based on an evaluation of the progress to completion of specific tasks using data such as patient enrollment, clinical site activations or other information provided to us by our vendors and our clinical investigative sites. Payments for these activities are based on the terms of the individual agreements, which may differ from the pattern of costs incurred, and are reflected in our financial statements as prepaid expenses or accrued research and development expenses.

We began tracking external development costs by program on January 1, 2020 for programs that have entered clinical trials. We do not allocate internal costs, facilities costs or other overhead costs to specific programs. The following summarizes our costs based on their status in development:



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                                                         Three Months       Nine Months
                                                            Ended              Ended
                                                        September 30,      September 30,
                                                             2021               2021
                                                                 (in thousands)

External costs for programs in clinical trials $ 3,555 $ 10,522 External costs for all programs in discovery and pre-clinical


  studies                                                       17,962             47,792
External costs for platform research and other
research and
  development activities                                         4,498             11,651
Employee related expenses                                       18,959             50,778
Total research and development expenses                 $       44,974     $      120,743

Our most advanced development programs, RLY-1971 and RLY-4008, are enrolling patients in first-in-human clinical trials. Programs in discovery and pre-clinical stages include our RLY-2608 program as well as other earlier stage programs. Costs incurred for these programs include costs incurred to support our discovery research and translational science efforts up to the initiation of first-in-human clinical development. Platform research and other research and development activities include costs that are not specifically allocated to active product candidates, including facilities costs, depreciation expense and other costs. Employee related expenses includes salary, wages, stock-based compensation and other costs related to our personnel, which are not allocated to specific programs or activities.

We cannot determine with certainty the duration and costs of future clinical trials and future development costs, if, when or to what extent we will generate revenue from the commercialization and sale of any of our product candidates for which we obtain marketing approval or our other research and development costs. We may never succeed in obtaining marketing approval for any of our product candidates.

The duration, costs and timing of clinical trials and development of our product candidates will depend on a variety of factors, including:



   •  the scope, rate of progress, expense and results of our preclinical
      development activities, any future clinical trials of RLY-4008, our PI3K?
      mutant selective inhibitor programs, including RLY-2608, or other product
      candidates, and other research and development activities that we may
      conduct;


   •  uncertainties in clinical trial design and patient enrollment or drop out or
      discontinuation rates;


   •  establishing an appropriate safety and efficacy profile with IND-enabling
      studies;


  • the initiation and completion of future clinical trial results;


   •  the timing, receipt and terms of any approvals from applicable regulatory
      authorities including the U.S. Food and Drug Administration, or FDA, and
      non-U.S. regulators;


  • significant and changing government regulation and regulatory guidance;


  • potential additional studies requested by regulatory agencies;


   •  establishing clinical and commercial manufacturing capabilities or making
      arrangements with third-party manufacturers in order to ensure that we or
      our third-party manufacturers are able to make product successfully;


   •  the impact of any business interruptions to our operations, including the
      timing and enrollment of patients in our planned clinical trials, or to
      those of our manufacturers, suppliers or other vendors resulting from the
      COVID-19 pandemic or a similar public health crisis;


   •  the expense of filing, prosecuting, defending and enforcing any patent
      claims and other intellectual property rights; and


   •  maintaining a continued acceptable safety profile of our product candidates
      following approval, if any, of our product candidates.

Research and development activities are central to our business model. 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 continue to increase for the foreseeable future as we continue clinical trials of RLY-4008, the development of our PI3K? mutant selective inhibitor programs, including RLY-2608, and to identify and develop additional product candidates.

A change in the outcome of any of these variables with respect to the development of a product candidate could mean a significant change in the costs and timing associated with the development of that product candidate. For example, if the FDA or another regulatory authority were to require us to conduct clinical trials beyond those that we anticipate will be required for the completion of clinical development of a product candidate, or if we experience significant trial delays due to patient enrollment or other reasons, we would be required to expend significant additional financial resources and time on the completion of clinical development.



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General and Administrative Expenses

General and administrative expenses consist primarily of salaries and other related costs, including stock-based compensation, for personnel in our executive, finance, corporate and business development and administrative functions. General and administrative expenses also include legal fees relating to patent and corporate matters, professional fees for accounting, auditing, tax and consulting services, insurance costs, travel expenses and facility-related expenses, which include direct depreciation costs and allocated expenses for rent, maintenance of facilities and other operating costs.

We expect that our general and administrative expenses will increase in the future as we increase our general and administrative personnel headcount to support personnel in research and development and to support our operations generally as we increase our research and development activities and activities related to the potential commercialization of our product candidates. We also expect to incur increased expenses associated with operating as a public company, including costs of accounting, audit, legal, regulatory and tax-related services associated with maintaining compliance with exchange listing and Securities and Exchange Commission, or SEC, requirements, director and officer insurance costs and investor and public relations costs.

Other Income, Net

Other income, net primarily consists of interest income related to interest earned on our cash, cash equivalents and investments.

Income Taxes

Since our inception in 2015, we have not recorded any U.S. federal or state income tax benefits for the net losses we have incurred in any year or for our earned research and development tax credits due to our uncertainty of realizing a benefit from those items.

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:





                                                   Three Months Ended
                                                      September 30,             Change
                                                   2021           2020
                                                             (in thousands)
Revenue                                         $      666     $        -     $      666
Operating expenses:
Research and development                        $   44,974     $   24,376     $   20,598
Change in fair value of contingent
consideration liability                              2,000              -          2,000
General and administrative                          14,682         12,231          2,451
Total operating expenses                            61,656         36,607         25,049
Loss from operations                               (60,990 )      (36,607 )      (24,383 )
Other income, net                                      157            529           (372 )
Net loss                                        $  (60,833 )   $  (36,078 )   $  (24,755 )




Revenue

We recognized revenue of approximately $0.7 million for the three months ended September 30, 2021 primarily related to the Genentech Agreement and our progress on the related R&D services performance obligation. We did not recognize any revenue for the three months ended September 30, 2020.

Research and Development Expenses





                                            Three Months Ended
                                               September 30,           Change
                                             2021          2020
                                                     (in thousands)
Employee related expenses                 $   18,959     $ 10,887     $  8,072
Outside and consulting services               16,510        7,642        8,868
Clinical trial expenses                        3,555        2,101        1,454
Depreciation                                     807          750           57
Laboratory supplies and other costs            2,915        1,606        1,309

Facilities and other allocated expenses 2,228 1,390 838 Total research and development expenses $ 44,974 $ 24,376 $ 20,598




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Research and development expenses were $45.0 million for the three months ended September 30, 2021, compared to $24.4 million for the three months ended September 30, 2020. The increase of $20.6 million was primarily due to $8.9 million of additional outside and consulting services related to our pre-clinical candidates, $8.1 million of additional employee related costs due to increased headcount, including an increase in stock-based compensation of $0.8 million, $1.5 million for additional clinical trial expenses associated with RLY-1971 and RLY-4008, which both commenced in 2020, $1.3 million of additional laboratory and other expenses and an additional $0.8 million of facilities and other allocated expenses.

Change in Fair Value of Contingent Consideration Liability

The fair value of our contingent consideration liability for milestones under the Merger Agreement with ZebiAI increased $2.0 million from $43.5 million at the acquisition date in April 2021 to September 30, 2021. The increase was attributable to the time value of money. There were no similar amounts in the prior period. In future periods, we expect the fair value of contingent consideration to increase or decrease based on, among other things, our estimates of the probability of achieving and the timing of the contingent milestone payments, as well as changes in market interest rates and the time value of money.

General and Administrative Expenses

General and administrative expenses were $14.7 million for the three months ended September 30, 2021, compared to $12.2 million for the three months ended September 30, 2020. The increase of $2.5 million was primarily due to $1.3 million of increased personnel costs and $0.7 million of other general and administrative expenses primarily attributed to an increase in consulting and professional fees.

Other Income, Net

Other income, net, was $0.2 million for the three months ended September 30, 2021, compared to $0.5 million for the three months ended September 30, 2020. The decrease was primarily as a result of lower interest rates.

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:

                                                    Nine Months Ended
                                                      September 30,             Change
                                                   2021           2020
                                                             (in thousands)
Revenue                                         $    2,462     $        -     $    2,462
Operating expenses:
Research and development                        $  120,743     $   67,739     $   53,004
In-process research and development                123,000              -        123,000
Loss on initial consolidation of variable
interest entity                                     11,855              -         11,855
Change in fair value of contingent
consideration liability                              2,000              -          2,000
General and administrative                          41,839         23,045         18,794
Total operating expenses                           299,437         90,784        208,653
Loss from operations                              (296,975 )      (90,784 )     (206,191 )
Other income, net                                      559          3,096         (2,537 )
Net loss                                        $ (296,416 )   $  (87,688 )   $ (208,728 )


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Revenue

We recognized revenue of approximately $2.5 million for the nine months ended September 30, 2021 primarily related to the Genentech Agreement including our progress on the R&D services performance obligation and our completion of the transfer of API to Genentech. We did not recognize any revenue for the nine months ended September 30, 2020.

Research and Development Expenses



                                            Nine Months Ended
                                              September 30,           Change
                                            2021          2020
                                                    (in thousands)
Employee related expenses                 $  50,778     $ 24,957     $ 25,821
Outside and consulting services              43,811       26,372       17,439
Clinical trial expenses                      10,522        4,853        5,669
Depreciation                                  2,292        2,181          111
Laboratory supplies and other costs           7,578        5,138        2,440

Facilities and other allocated expenses 5,762 4,238 1,524 Total research and development expenses $ 120,743 $ 67,739 $ 53,004

Research and development expenses were $120.7 million for the nine months ended September 30, 2021, compared to $67.7 million for the nine months ended September 30, 2020. The increase of $53.0 million was primarily due to $25.8 million of additional employee related costs due to increased headcount, including an increase in stock-based compensation of $12.2 million, $17.4 million of additional outside and consulting services related to our pre-clinical candidates, $5.7 million for additional clinical trial expenses associated with RLY-1971 and RLY-4008, which both commenced in 2020, and $4.1 million of other research and development expenses, including lab, facilities and depreciation expenses.

In-process Research and Development Expenses

In-process research and development expenses of $123.0 million were recognized for the nine months ended September 30, 2021 in connection with the in-process research and development asset acquired in connection with the asset acquisition of ZebiAI in the second quarter of 2021. No such expenses were incurred during the nine months ended September 30, 2020.

Loss on Initial Consolidation of Variable Interest Entity

Loss on initial consolidation of variable interest entity of $11.9 million was recognized for the nine months ended September 30, 2021 in connection with the acquisition of ZebiAI in the second quarter of 2021. No such expenses were incurred during the nine months ended September 30, 2020.

Change in Fair Value of Contingent Consideration Liability

The fair value of our contingent consideration liability for milestones under the Merger Agreement with ZebiAI increased $2.0 million from $43.5 million at the acquisition date in April 2021 to September 30, 2021. The increase was attributable to the time value of money. There were no similar amounts in the prior period. In future periods, we expect the fair value of contingent consideration to increase or decrease based on, among other things, our estimates of the probability of achieving and the timing of the contingent milestone payments, as well as changes in market interest rates and the time value of money.

General and Administrative Expenses

General and administrative expenses were $41.8 million for the nine months ended September 30, 2021, compared to $23.0 million for the nine months ended September 30, 2020. The increase of $18.8 million was primarily due to $13.3 million of increased personnel costs, including increased stock-based compensation of $8.6 million, to support our infrastructure and $5.5 million of other general and administrative expenses primarily attributed to an increase in insurance expense.

Other Income, Net

Other income, net, was $0.6 million for the nine months ended September 30, 2021, compared to $3.1 million for the nine months ended September 30, 2020. The decrease was primarily as a result of lower interest rates.

Liquidity and Capital Resources

Since our inception, we have not generated any revenue from product sales and have incurred significant operating losses. We have not yet commercialized any products and we do not expect to generate revenue from sales of any product candidates for several years, if ever. To



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date, we have principally financed our operations through private placements of preferred stock, convertible debt and proceeds from public offerings of our common stock. In July 2020, we closed our IPO and issued 23,000,000 shares of common stock for net proceeds of $425.3 million. Prior to our IPO, we received gross proceeds of $520.0 million from sales of our preferred stock and our issuance of convertible debt. We received an upfront payment of $75.0 million from Genentech pursuant to the Genentech Agreement in January 2021 and a $5.0 million milestone payment in May 2021. As of September 30, 2021, we had cash, cash equivalents and investments of $616.5 million.

In August 2021, we filed a universal shelf registration statement on Form S-3ASR with the SEC, or the 2021 Shelf, to register for sale an amount of our common stock, preferred stock, debt securities, warrants and/or units in one or more offerings, which became effective upon filing with the SEC (File No. 333-258768).

In August 2021, we entered into a sales agreement, or Sales Agreement, with Cowen and Company, LLC, or Cowen, pursuant to which we may offer and sell shares of our common stock having aggregate gross proceeds of up to $300.0 million from time to time in "at-the-market" offerings through Cowen, as our sales agent. We agreed to pay Cowen a commission of up to 3.0% of the gross proceeds of any shares sold by Cowen under the Sales Agreement. There have been no shares of our common stock sold under the Sales Agreement as of September 30, 2021.

In October 2021, we completed the October 2021 Offering of 15,188,679 shares of common stock, including the exercise in full of the underwriters' option to purchase an additional 1,981,132 shares, at an offering price of $26.50 per share. We received estimated net proceeds of $381.9 million, after deducting underwriting discounts and commissions and other estimated offering expenses.

Cash Flows



The following table summarizes our sources and uses of cash for each of the
periods presented:



                                                              Nine Months Ended
                                                                September 30,
                                                            2021             2020
                                                               (in thousands)
Cash used in operating activities                       $    (34,699 )   $    (67,217 )
Cash (used in) provided by investing activities             (186,766 )        158,092
Cash provided by financing activities                          4,078          426,453
Net (decrease) increase in cash, cash equivalents and
restricted
  cash                                                  $   (217,387 )   $    517,328




Operating Activities.

During the nine months ended September 30, 2021, we used $34.7 million of cash on operating activities, resulting from our net loss of $296.4 million, partially offset by non-cash charges of $179.4 million and cash provided by changes in our operating assets and liabilities of $82.4 million. Net cash provided by changes in our operating assets and liabilities of $82.4 million during this period consisted primarily of a decrease of $74.3 million in accounts receivable attributable to the collection of the up-front payment due from Genentech, an increase of $13.1 million in accrued expenses as a result of an increase in operating expenses, an increase of $7.1 million in prepaid expenses and other assets and a decrease of $3.4 million in contract asset, offset in part by a decrease of $1.5 million in accounts payable.

For the nine months ended September 30, 2020, we used $67.2 million of cash on operating activities, resulting from our net loss of $87.7 million, partially offset by non-cash charges of $19.6 million and cash provided by changes in our operating assets and liabilities of $0.9 million. Net cash provided by changes in our operating assets and liabilities of $0.9 million during this period consisted primarily of changes in prepaid expenses and other assets, accounts payable and accrued expenses as a result of an increase in operating expenses and the timing of payments related to our research arrangements and insurance.

Investing Activities.

During the nine months ended September 30, 2021, investing activities used $186.8 million of cash, consisting of $159.0 million of net purchases of investments, $25.2 million related to cash paid for the acquisition of ZebiAI and $2.6 million for the acquisition of property and equipment.

During the nine months ended September 30, 2020, investing activities provided $158.1 million, consisting of $160.0 million of net investment maturities, partially offset by $1.9 million for the acquisition of property and equipment.

Financing Activities.

During the nine months ended September 30, 2021, net cash provided by financing activities was $4.1 million, consisting of net proceeds from the exercise of stock options.

During the nine months ended September 30, 2020, net cash provided by financing activities was $426.5 million, consisting primarily of net proceeds from the issuance of common stock upon completion of our IPO.



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Funding Requirements

We expect our expenses to increase substantially in connection with our ongoing clinical development activities related to the potential clinical development activities of RLY-4008 and RLY-2608 and the ongoing pre-clinical development activities of our PI3K? mutant selective inhibitor programs. In addition, we are now incurring additional costs associated with operating as a public company. We expect that our expenses will increase substantially as discussed in more detail in "-Overview" above.

We believe our cash, cash equivalents and investments of $616.5 million as of September 30, 2021, together with the net proceeds of $381.9 million from the October 2021 Offering, will enable us to fund our operating expenses and capital expenditure requirements into at least 2025. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our available capital resources sooner than we expect.

Because of the numerous risks and uncertainties associated with the development of RLY-4008, our PI3K? mutant selective inhibitor programs, including RLY-2608, and other product candidates and programs and because the extent to which we may enter into collaborations with third parties for the development of our product candidates is unknown, we are unable to estimate the timing and amounts of increased capital outlays and operating expenses associated with completing the research and development of our product candidates. Our future capital requirements will depend on many factors, including:



   •  the impact of any business interruptions to our operations, including the
      timing and enrollment of patients in our planned clinical trials, or to
      those of our manufacturers, suppliers or other vendors resulting from the
      COVID-19 pandemic or similar public health crisis;


   •  the scope, progress, results and costs of our current and future clinical
      trials of RLY-4008 and future clinical trials of RLY-2608 and additional
      preclinical research of our PI3K? mutant selective inhibitor programs;


   •  the scope, progress, results and costs of drug discovery, preclinical
      research and clinical trials for our other product candidates;


   •  the number of future product candidates that we pursue and their development
      requirements;


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


   •  our ability to establish and maintain collaborations on favorable terms, if
      at all;


   •  the success of any existing or future collaborations that we may enter into
      with third parties;


   •  the extent to which we acquire or invest in businesses, products and
      technologies, including entering into licensing or collaboration
      arrangements for product candidates, such as our collaboration with
      Genentech;


   •  the achievement of milestones or occurrence of other developments that
      trigger payments under any existing or future collaboration agreements, if
      any;


   •  the extent to which we are obligated to reimburse, or entitled to
      reimbursement of, clinical trial costs under any existing or future
      collaboration agreements, if any;


   •  the costs and timing of future commercialization activities, including drug
      sales, marketing, manufacturing and distribution, for any of our product
      candidates for which we receive marketing approval, to the extent that such
      sales, marketing, manufacturing and distribution are not the responsibility
      of any collaborator that we may have at such time;


   •  the amount of revenue, if any, received from commercial sales of our product
      candidates, should any of our product candidates receive marketing approval;


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


   •  our headcount growth and associated costs as we expand our business
      operations and our research and development activities; and


  • the costs of operating as a public company.

Developing pharmaceutical products, including conducting preclinical studies and clinical trials, is a time-consuming, expensive and uncertain process that takes years to complete, and we may never generate the necessary data or results required to obtain marketing approval for any product candidates or generate revenue from the sale of any product candidate for which we may obtain marketing approval. In addition, our product candidates, if approved, may not achieve commercial success. Our commercial revenues, if any, will be derived from sales of drugs that we do not expect to be commercially available for many years, if ever. Accordingly, we will need to obtain substantial additional funds to achieve our business objectives.

Adequate additional funds may not be available to us on acceptable terms, or at all. We do not currently have any committed external source of funds. To the extent that we raise additional capital through the sale of equity or convertible debt securities, your ownership interest may be diluted, and the terms of these securities may include liquidation or other preferences and anti-dilution protections that could adversely affect your rights as a common stockholder. Additional debt or preferred equity financing, if available, may involve agreements that include restrictive covenants that may limit our ability to take specific actions, such as incurring debt, making capital



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expenditures or declaring dividends, which could adversely impact our ability to conduct our business, and may require the issuance of warrants, which could potentially dilute your ownership interest.

If we raise additional funds through collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technology, 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 or collaborations, strategic alliances or licensing arrangements with third parties when needed, we may be required to delay, limit, reduce and/or terminate our product development programs or any future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

Contractual Obligations and Commitments

There were no material changes to our contractual obligations and commitments during the nine months ended September 30, 2021, except for the lease commitment at 60 Hampshire Street, Cambridge, MA disclosed in Note 10, Commitments and Contingencies, of the notes to our condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q. For more information on our contractual obligations and commitments, please refer to "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2020 and Note 10, Commitments and Contingencies, of the notes to our condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Critical Accounting Policies and Use of Estimates

Our management's discussion and analysis of financial condition and results of operations is based on our financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States, or GAAP. The preparation of our condensed consolidated financial statements and related disclosures requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, costs and expenses and the disclosure of contingent assets and liabilities in our financial statements. We base our estimates on historical experience, known trends and events and various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates under different assumptions or conditions.

The full extent to which the COVID-19 pandemic will directly or indirectly impact our business, results of operations and financial condition, including expenses, clinical trials and research and development costs, will depend on future developments that are highly uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain or treat COVID-19, as well as the economic impact on local, regional, national and international markets. We have made estimates of the impact of COVID-19 within our financial statements and there may be changes to those estimates in future periods. Actual results could differ from our estimates.

For a discussion of our critical accounting estimates, see "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2020 filed with the SEC on March 25, 2021, the notes to our audited financial statements appearing in our Annual Report on Form 10-K and the notes to the financial statements appearing elsewhere in this Quarterly Report on Form 10-Q. There have been no material changes to these critical accounting policies and estimates through September 30, 2021 from those discussed in our Annual Report on Form 10-K for the year ended December 31, 2020, except as discussed below.

Acquisition Accounting

We are required to make significant judgments and estimates to determine whether an acquisition constitutes an acquisition of a business or assets. For asset acquisitions, this includes whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. We are also required to make several significant judgments and estimates in order to determine the total consideration transferred for the asset acquisition and then allocate it to the assets that we have acquired and the liabilities that we have assumed on our consolidated balance sheet. The most significant judgments and estimates typically relate to the fair value of the in-process research and development, or IPR&D, and the fair value of certain contingent payments related to the acquisition. We are also required to reassess the fair value of the Contingent Milestone Payments on a quarterly basis, which requires similar judgments and estimates. Changes in the fair value of certain contingent payments can result from changes to one or multiple inputs, including adjustments to the probability of achievement and timing of the contingent payments, and changes to the applicable discount rates. Significant judgment is used in determining these assumptions during each reporting period. Reasonable changes in these assumptions can cause material changes to the fair value of our contingent consideration liability.

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 SEC.



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Recently Issued and Adopted Accounting Pronouncements

A description of recently issued accounting pronouncements that may potentially impact our financial position and results of operations is disclosed in Note 2 to our condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

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