You should read the following discussion and analysis of our financial condition and results of operations together with our audited consolidated financial statements and related notes appearing elsewhere in this Annual Report. Some of the information contained in this discussion and analysis or set forth elsewhere in this Annual Report, including information with respect to our plans and strategy for our business and related financing, includes forward-looking statements that involve risks and uncertainties. As a result of many factors, including those factors set forth in the "Risk Factors" section of this Annual Report, 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 leading clinical-stage precision oncology company enabled by our proprietary synthetic lethality approach to the discovery and development of novel therapeutics. Synthetic lethality, or SL, represents a clinically validated approach to drug development. We use our proprietary, genome-wide, CRISPR-enabled SNIPRx platform to systematically discover and develop highly targeted cancer therapies focused on genomic instability, including DNA damage repair. SL arises when a deficiency in either of two genes is tolerated in cells, but simultaneous deficiencies in both genes cause cell death. Cancer cells that contain a mutation in one gene of a SL pair are susceptible to therapeutic intervention targeting the other gene pair. Using our SNIPRx platform, we are developing our pipeline of SL product candidates, including our initial product candidate, camonsertib (also known as RP-3500 or RG6526), a potent and selective oral small molecule inhibitor of ATR (Ataxia-Telangiectasia and Rad3-related protein kinase) for the treatment of solid tumors with specific DNA damage repair-related genomic alterations, including those in the ATM gene (ataxia telangiectasia mutated kinase). In June 2022, we entered into a worldwide license and collaboration agreement with Hoffmann-La Roche Inc. and F. Hoffmann-La Roche Ltd, collectively referred to as Roche, for the development and commercialization of camonsertib. In July 2020, we began dosing patients in our Phase 1/2 TRESR (Treatment Enabled by SNIPRx) clinical trial of camonsertib in advanced solid tumors and, in August 2021, we began dosing patients in our Phase 1b/2 ATTACC clinical trial of camonsertib to evaluate the safety and efficacy of camonsertib in combination with approved poly (ADP-ribose) polymerase, or PARP, inhibitors, olaparib and niraparib, in patients with molecularly selected cancers.

In April 2021, we initiated our Phase 1 MYTHIC clinical trial for RP-6306, our PKMYT1 (Protein Kinase Membrane-associated tyrosine- and threonine- specific cdc-2 inhibitory kinase) SL inhibitor, as a monotherapy for the treatment of molecularly selected advanced solid tumors, and anticipate early Phase 1 read-outs from the trial in the first half of 2023. We initiated Phase 1 combination studies of RP-6306 with gemcitabine (MAGNETIC) in December 2021, camonsertib (MYTHIC) in May 2022, and FOLFIRI (MINOTAUR) in August 2022, each for the treatment of molecularly selected advanced solid tumors, and anticipate providing an update on some of these combination studies in the fourth quarter of 2023. In the fourth quarter of 2022, we received fast track designation for RP-6306 in combination with gemcitabine for the treatment of adult patients with CCNE1 amplified, or FBXW7, or PPP2R1A mutated platinum resistant ovarian cancer. Based on promising preclinical data released at the 34th EORTC-NCI-AACR Symposium in October 2022, we are working with clinical investigators to initiate clinical testing, as part of an investigator-sponsored trial (IST), of a fourth new RP-6306 combination with carboplatin, with first patient dosing expected in the first half of 2023. In the fourth quarter of 2022, we entered into an agreement with Canadian Cancer Trials Group, or CCTG, for a planned, basket Phase 2 IST to evaluate RP-6306 in patients with selected, advanced cancers receiving standard agents. We plan to modify the trial to include a sub-study, which will evaluate RP-6306 in combination with gemcitabine in patients with CD4/6i-resistant ER+/HER2- metastatic breast cancer.

We continue to focus on the advancement of our preclinical programs into clinical development. We expect to initiate IND-enabling studies in the first half of 2023 for a small molecule against an undisclosed target with potential to enter the clinic in late 2023 or early 2024, which represents an acceleration from our prior expectations for this program. We are also pursuing development of an inhibitor of polymerase theta (Pol?) in collaboration with Ono, as Pol? is SL with multiple gene deficiencies found in tumors, including BRCA alterations. In 2022, we selected a proposed inhibitor, which we designated as RP-2119. In February 2023, based on our review of ongoing preclinical studies, we elected to prioritize other Pol? inhibiting compounds in our preclinical development portfolio, which we believe have a higher probability for clinical impact relative to RP-2119. We are now guiding toward clinical entry for a Pol? inhibitor in 2024.



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Since our inception in September 2016, we have focused primarily on raising capital, organizing and staffing our company, conducting discovery and research activities, identifying potential SL gene pairs, establishing and protecting our intellectual property portfolio including for our proprietary SNIPRx platform, developing and progressing our product candidates through preclinical studies and preparing for clinical trials and establishing arrangements with third parties for the manufacture of initial quantities of our product candidates and component materials. We do not have any product candidates approved for sale and have not generated any revenue from product sales. On June 23, 2020, we completed our initial public offering, or IPO, whereby we issued an aggregate of 12,650,000 common shares, which includes the exercise in full of the underwriters' option to purchase up to an additional 1,650,000 common shares, at a public offering price of $20.00 per share. The aggregate net proceeds received by us from the IPO were approximately $232.0 million, after deducting underwriting commissions and offering expenses of $3.2 million. On November 1, 2021, we completed a follow-on offering, or the 2021 Offering, whereby we issued 4,600,000 common shares, including the exercise in full by the underwriters of their option to purchase up to 600,000 additional common shares, at a public offering price of $22.00 per share, for net proceeds of $94.3 million, after deducting underwriting commissions as well as offering expenses of $0.8 million. Prior to our IPO, we had funded our operations primarily through equity financings, having raised an aggregate of approximately $135.2 million of gross proceeds from the sale of our preferred shares and $15.0 million of gross proceeds from the issuance of a warrant to acquire our common shares. As of December 31, 2022, we had cash and cash equivalents and marketable securities on hand of $343.9 million.

Since inception, we have incurred significant operating losses. Our net losses were $29.0 million, and $106.9 million for the years ended December 31, 2022 and 2021, respectively. As of December 31, 2022, we had an accumulated deficit of $239.3 million. We expect to continue to incur significant and increasing expenses and operating losses for the foreseeable future, as we advance our product candidates, including RP-6306, through preclinical and clinical development and seek regulatory approvals, manufacture drug product and drug supply, maintain and expand our intellectual property portfolio. Our net losses are also expected to be impacted as we hire additional personnel, pay for accounting, audit, legal, regulatory and consulting services, and pay costs associated with maintaining compliance with Nasdaq listing rules and the SEC requirements, directors and officers, or D&O, insurance, investor and public relations activities and other expenses associated with operating as a public company. Our net losses may fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our preclinical studies, our clinical trials, our expenditures on other research and development activities, and our revenue and expenses recognized from collaboration and license agreements.

We do not have any products approved for sale. We will not generate revenue from product sales unless and until we successfully complete clinical development and obtain regulatory approval for our product candidates, if ever. In addition, if we obtain regulatory approval for our product candidates and do not enter into a third-party commercialization partnership, we expect to incur significant expenses related to developing our commercialization capability to support product sales, marketing, manufacturing and distribution activities. As a result, we will need substantial additional funding to support our continuing operations and pursue our growth strategy. Until we can generate significant revenue from product sales, if ever, we expect to finance our operations through a combination of public or private equity offerings and debt financings or other sources, such as potential collaboration agreements, strategic alliances and licensing arrangements. We may be unable to raise additional funds or enter into such other agreements or arrangements when needed on acceptable terms, or at all. Our failure to raise capital or enter into such agreements as, and when, needed, could have a negative effect on our business, results of operations and financial condition.

Macroeconomic Considerations

Unfavorable conditions in the economy in the United States, Canada and abroad may negatively affect the growth of our business and our results of operations. For example, macroeconomic events, including the COVID-19 pandemic, rising inflation, the U.S. Federal Reserve raising interest rates and the Russia-Ukraine war, have led to economic uncertainty globally. The effect of macroeconomic conditions may not be fully reflected in our results of operations until future periods. If, however, economic uncertainty increases or the global economy worsens, our business, financial condition and results of operations may be harmed. For further discussion of the potential impacts of macroeconomic events on our business, financial condition, and operating results, see the section titled "Risk Factors."



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Recent and Anticipated Developments

Advancing camonsertib, a potent and selective oral small molecule inhibitor of ATR (Ataxia-Telangiectasia and Rad3-related protein kinase) for the treatment of tumors with specific synthetic lethal genomic alterations in partnership with Roche.



o

Initial data from the Phase 1/2 trials evaluating camonsertib in combination with three poly (ADP-ribose) polymerase (PARP) inhibitors is expected to be presented in the first half of 2023 at a major medical meeting.



o

We expect to report initial data from the Phase 1/2 TRESR trial evaluating camonsertib in combination with gemcitabine in the summer or fall of 2023.

Evaluating RP-6306, a first-in-class, oral PKMYT1 inhibitor as a monotherapy and in combinations in multiple early clinical studies.



o

We expect to report initial Phase 1 clinical data for RP-6306 as a monotherapy for the treatment of molecularly selected advanced solid tumors (MYTHIC) in the first half of 2023. We expect to report initial Phase 1 clinical data for RP-6306 as a combination therapy for the treatment of molecularly selected advanced solid tumors in the fourth quarter of 2023.



o

In the fourth quarter of 2022, the U.S. Food and Drug Administration granted Fast Track designation to RP-6306 in combination with gemcitabine for the treatment of adult patients with CCNE1 amplified, or FBXW7 or PPP2R1A mutated platinum resistant ovarian cancer. Fast Track designation is intended to facilitate the development and expedite the review of drugs to treat serious conditions and fulfill an unmet medical need, enabling drugs to reach patients earlier.



o

Based on promising preclinical data released at the 34th EORTC-NCI-AACR Symposium in October 2022, we are working with clinical investigators to initiate clinical testing, as part of an investigator sponsored trial (IST), of a fourth new RP-6306 combination with carboplatin, with first patient dosing expected in the first half of 2023.



o

In the fourth quarter of 2022, we entered into an agreement with CCTG for a planned, basket Phase 2 IST to evaluate RP-6306 in patients with selected, advanced cancers receiving standard agents. A sub-study under the master clinical trial protocol will evaluate RP-6306 in combination with gemcitabine in patients with CD4/6i-resistant ER+/HER2- metastatic breast cancer.

Advancing preclinical programs into clinical development.



o

We expect to initiate IND-enabling studies in the first half of 2023 for a small molecule against an undisclosed target with potential to enter the clinic in late 2023 or early 2024, which represents an acceleration from our prior expectations for this program.



o

We are pursuing development of an inhibitor of Pol? in collaboration with Ono in Japan, South Korea, Taiwan, Hong Kong, Macau and ASEAN countries, excluding mainland China. Repare retains all rights to develop and commercialize the products outside the Ono territory. In 2022, we selected a proposed inhibitor of Pol?, which we designated as RP-2119. In February 2023, based on our review of ongoing preclinical studies, we elected to prioritize other Pol? inhibiting compounds in our preclinical development portfolio, which we believe have a higher probability for clinical impact relative to RP-2119. We are now guiding toward clinical entry for a Pol? inhibitor in 2024.



o

In January 2023, we received an approximate $1.5 million (¥200 million) milestone payment from Ono. The payment reflected the achievement of a research milestone under our research services, license and collaboration agreement with Ono (Ono Agreement).



o

Also, in January 2023, we and Ono amended the Ono Agreement to further extend the research term until July 31, 2023. Previously, we had entered into an amendment with Ono in October 2021 to extend the research term by one year at no additional cost to us.



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Components of Results of Operations

Revenue

To date, we have not recognized any revenue from product sales, and we do not expect to generate any revenue from the sale of products in the foreseeable future. If our development efforts for our product candidates are successful and result in regulatory approval, or license agreements with third parties, we may generate revenue in the future from product sales. However, there can be no assurance as to when we will generate such revenue, if at all.

Collaboration and License Agreement with Hoffmann-La Roche Inc. and F. Hoffmann-La Roche Ltd.

On June 1, 2022, we entered into a collaboration and license agreement, or the Roche Agreement, with Hoffmann-La Roche Inc. and F. Hoffmann-La Roche Ltd, or collectively, Roche, regarding the development and commercialization of our product candidate camonsertib (also known as RP-3500 or RG6526) and specified other ATR (Ataxia-Telangiectasia and Rad3-related protein kinase) inhibitors, which we refer to as the Licensed Products. The transaction was subject to clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 and other customary closing conditions, which were met on July 13, 2022, or Effective Date.

Under the Roche Agreement, we granted Roche a worldwide, perpetual, exclusive, sublicensable license to develop, manufacture, and commercialize the Licensed Products. Roche assumes all subsequent development of camonsertib with the potential to expand development into additional tumors and multiple combination studies. We have agreed to complete specified ongoing clinical trials at our expense. We also retained the right to conduct specified clinical trials of camonsertib in combination with our PKMYT1 compound (also known as RP-6306).

The Roche Agreement was subsequently amended in October 2022 to extend the timeline to negotiate in good faith the parties' rights and obligations with respect to the Repare Trials, as defined in the Roche Agreement, and to clarify indications included in the development plan that are subject to milestones.

Under the terms of the Roche Agreement, we received an upfront payment of $125 million in July 2022, and are eligible to receive up to $1.172 billion in potential clinical, regulatory, commercial and sales milestones, including up to $55 million in potential near-term payments, and royalties on global net sales ranging from high-single-digits to high-teens. The Roche Agreement also provides us with the ability to opt-in to a 50/50 U.S. co-development and profit share arrangement, including participation in U.S. co-promotion if U.S. regulatory approval is received. If we choose to exercise its co-development and profit share option, we will continue to be eligible to receive certain clinical, regulatory, commercial and sales milestone payments, in addition to full ex-U.S. royalties.

We determined that the transaction price at the onset of the Roche Agreement was $134.6 million, being (i) the total non-refundable upfront payment received of $125.0 million, (ii) the additional $4.0 million payment received, negotiated with Roche for revisions to the clinical development plan under the Roche Agreement as agreed at the time of the Effective Date, and (iii) the $5.6 million received for the transfer of clinical trial materials.



Performance obligation                  Transaction price
                                         (in thousands)
Combined licenses                      $           105,327
Completion of Continuing Trials                     26,585
Transfer of clinical trial materials                 2,714
Total transaction price                $           134,626


We recognized $116.6 million for the year ended December 31, 2022 as revenue associated with the Roche Agreement, of which $105.3 million related to the grant of the combined licenses, $2.7 million related to the clinical trial materials transferred, and $8.6 million related to the partial recognition of deferred revenue for research and development services performed towards the completion of the Continuing Trials during the period.

As of December 31, 2022, there was $18.0 million (December 31, 2021 - nil) of deferred revenue related to the Roche Agreement, of which $15.3 million (December 31, 2021 - nil) was classified as current and $2.7 million (December 31, 2021 - nil) was classified as non-current in the consolidated balance sheet based on the period the services to complete the Continuing Trials are expected to be performed.



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Collaboration and License Agreement with Bristol-Myers Squibb Company

In May 2020, we entered into a collaboration and license agreement, or the BMS Agreement, with the Bristol Myers Squibb Company, or Bristol Myers Squibb, pursuant to which we and Bristol Myers Squibb have agreed to collaborate in the research and development of potential new product candidates for the treatment of cancer. We are providing Bristol Myers Squibb access to a selected number of our existing screening campaigns and novel campaigns. We are responsible for carrying out early-stage research activities directed to identifying potential targets for potential licensing by Bristol Myers Squibb. The collaboration consists of programs directed to both druggable targets and to targets commonly considered undruggable to traditional small molecule approaches. In the event that Bristol Myers Squibb elects to obtain an exclusive license for the subsequent development, manufacturing and commercialization of a program, Bristol Myers Squibb will then be solely responsible for all such worldwide activities.

The BMS Agreement was subsequently amended in July, September and November 2020 to include additional campaigns to the list of existing campaigns from which Bristol Myers Squibb may select campaigns under the BMS Agreement and to enable unblinding of a Bristol Myers Squibb alliance manager in order to streamline the collaboration process.

As part of the BMS Agreement, Bristol Myers Squibb paid us an initial upfront fee of $50.0 million and made an equity investment of $15.0 million in our company. We will also be eligible to receive up to $3.0 billion in total milestones across all potential programs. Such milestones consist of $301.0 million in total milestones per program subject upon the achievement of certain specified research, development, regulatory and commercial milestones.

The $50.0 million upfront payment was recorded as deferred revenue on our consolidated balance sheet and is expected to be partially recognized at the point in time when option licenses are exercised by Bristol Myers Squibb, with the remainder being recognized on a proportional performance basis over the period of service for research services.




Performance obligation                     Transaction price
                                            (in thousands)
 Research activities                      $             6,405
 Options to license druggable targets                  31,148
 Options to license undruggable targets                12,447
Total transaction price                   $            50,000


For the years ended December 31, 2022 and 2021, we recognized, from our deferred revenue balance, $2.7 million and $1.1 million, respectively, as revenue associated with the BMS Agreement in relation to research activities performed during the period.

In the fourth quarter of 2022, Bristol Myers Squibb waived its rights to exercise options for druggable targets directed at two separate lesions. As a result, we recognized, from our deferred revenue balance, $12.5 million as revenue for the year ended December 31, 2022 with regards to the amount allocated to the performance obligation from Bristol Meyers Squibb. In October 2021, we received notification from Bristol Myers Squibb of their option exercise for two druggable targets directed at a single synthetic lethal lesion, pursuant to the terms of the BMS Agreement. As a result, we recognized, from our deferred revenue balance, $6.5 million as revenue for the year ended December 31, 2021 with regards to the achievement of the performance obligation from Bristol Myers Squibb and the option fees received.

As of December 31, 2022, there was $27.4 million (December 31, 2021 - $42.5 million) of deferred revenue related to the BMS Agreement, of which $27.4 million (December 31, 2021 - $2.9 million) was classified as current



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and nil (December 31, 2021 - $39.6 million) was classified as non-current on the consolidated balance sheet based on the period the services are expected to be performed and the expected timing of potential option exercises.

Collaboration Agreement with Ono Pharmaceutical Company Ltd.

In January 2019, we entered into a research services, license and collaboration agreement, or the Ono Agreement, with Ono Pharmaceutical Company Ltd., or Ono, pursuant to which we and Ono have agreed to collaborate in the research of potential product candidates targeting Pol? and the development of our small molecule Pol? inhibitor program. Pursuant to the terms of the agreement, we received initial upfront payments of approximately $8.1 million. These upfront payments have been recorded as deferred revenue on our consolidated balance sheet as per our revenue recognition accounting policy and will be recognized as revenue at the point in time when a product candidate is licensed to Ono pursuant to the terms of the agreement.

In October 2021, we and Ono entered into an amendment to the Ono Agreement whereby the research term, as defined in the Ono Agreement, was extended by one year. In January 2023, we and Ono entered into a second amendment to the Ono Agreement whereby the Research Term, as defined in the Ono Agreement, was extended until July 31, 2023.

In October 2021 and December 2022, the Company achieved specified research triggers amounting to ¥100 million ($0.9 million) and ¥200 million ($1.5 million), respectively, as research service payments provided for in the Ono Agreement. The ¥200 million ($1.5 million) is included in the collaboration revenue receivable at December 31, 2022 and was subsequently received in January 2023. These amounts have been added to the transaction price as the consideration was no longer constrained.

As of December 31, 2022, we classified $10.5 million (December 31, 2021 - $9.0 million) as current deferred revenue related to the Ono Agreement.

Operating Expenses

Research and Development Expenses

Research and development expenses consist primarily of costs incurred for our research activities, including our drug discovery efforts and the development of our product candidates, partially offset by fully refundable Canadian research and development tax credits. We expense research and development costs as incurred, which include:

external research and development expenses incurred under agreements with contract research organizations, or CROs, as well as investigative sites and consultants that conduct our clinical trials, preclinical studies and other scientific development services;

employee-related expenses, including salaries, bonuses, benefits, share-based compensation, and other related costs for those employees involved in research and development efforts;

costs related to manufacturing material for our preclinical studies and clinical trials, including fees paid to contract manufacturing organizations, or CMOs;

laboratory supplies and research materials;

upfront, milestone and maintenance fees incurred under license, acquisition and other third-party agreements;

costs related to compliance with regulatory requirements; and

facilities, depreciation, scientific advisory board and other allocated expenses, which include direct and allocated expenses for rent, maintenance of facilities and equipment, insurance, equipment and software.

Costs for certain activities are recognized based on an evaluation of the progress to completion of specific tasks using data such as information provided to us by our vendors and analyzing the progress of our studies or other services performed. Significant judgment and estimates are made in determining the accrued expense or prepaid balances at the end of any reporting period.



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We characterize research and development costs incurred prior to the identification of a product candidate as discovery costs. We characterize costs incurred once a product candidate has been identified as development costs.

Our direct external research and development expenses consist primarily of fees paid to outside consultants, CROs, CMOs and research laboratories in connection with our preclinical development, process development, manufacturing and clinical development activities. Our direct external research and development expenses also include fees incurred under license, acquisition, and option agreements. We track these external research and development costs on a program-by-program basis once we have identified a product candidate.

We do not allocate employee costs, costs associated with our discovery efforts, laboratory supplies, and facilities, including depreciation or other indirect costs, to specific programs because these costs are deployed across multiple programs and, as such, are not separately classified. We use internal resources primarily to conduct our research and discovery activities as well as for managing our preclinical development, process development, manufacturing, and clinical development activities.

The following table summarizes our research and development costs:



                                                               Year Ended
                                                              December 31,
                                                         2022               2021
                                                             (in thousands)
Discovery costs
Direct external costs                               $        9,942     $       11,308
Laboratory supplies and research materials                   4,072              4,398
Personnel related costs*                                    10,965              8,912
Facilities related costs                                     1,536              1,460
Other costs*                                                 4,032              3,665
                                                            30,547             29,743
Development
Direct external costs
Camonsertib program                                         25,434             25,350
RP-6306 program                                             25,241             15,962
RP-2119 program                                              5,152                  -
Personnel related costs*                                    27,450             16,889
Facilities related costs                                       808                733
Other costs*                                                 5,868              2,494
                                                            89,953             61,428
R&D tax credits                                             (1,434 )           (1,124 )
Total research and development costs                $      119,066     $       90,047
*Certain amounts have been reclassified for
presentation purposes.


The successful development of our product candidates is highly uncertain. We plan to substantially increase our research and development expenses for the foreseeable future as we continue the development of our product candidates and manufacturing processes and conduct discovery and research activities for our preclinical programs. We cannot determine with certainty the timing of initiation, the duration, or the completion costs of current or future preclinical studies and clinical trials of our product candidates due to the inherently unpredictable nature of preclinical and clinical development. Clinical and preclinical development timelines, the probability of success and development costs can differ materially from expectations. We anticipate that we will make determinations as to which product candidates to pursue and how much funding to direct to each product candidate on an ongoing basis in response to the results of ongoing and future preclinical studies and clinical trials, regulatory developments, and our ongoing assessments as to each product candidate's commercial potential. We will need to raise substantial additional capital in the future. Our clinical development costs are expected to increase significantly as we commence clinical trials. We



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anticipate that our expenses will increase substantially, particularly due to the numerous risks and uncertainties associated with developing product candidates, including the uncertainty of:

the scope, rate of progress, and expenses of our ongoing research activities as well as any preclinical studies, clinical trials and other research and development activities;

establishing an appropriate safety profile;

successful enrollment in and completion of clinical trials;

whether our product candidates show safety and efficacy in our clinical trials;

receipt of marketing approvals from applicable regulatory authorities;

establishing commercial manufacturing capabilities or making arrangements with third-party manufacturers;

obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our product candidates;

commercializing product candidates, if and when approved, whether alone or in collaboration with others; and

continued acceptable safety profile of products following any regulatory approval.

Any changes in the outcome of any of these variables with respect to the development of our product candidates in preclinical and clinical development could mean a significant change in the costs and timing associated with the development of these product candidates. We may never succeed in achieving regulatory approval for any of our product candidates. We may obtain unexpected results from our clinical trials. We may elect to discontinue, delay or modify clinical trials of some product candidates or focus on other product candidates. For example, if the U.S. Food and Drug Administration, or the FDA, the European Medicines Agency, or EMA, or another regulatory authority were to delay our planned start of clinical trials or require us to conduct clinical trials or other testing beyond those that we currently expect or if we experience significant delays in enrollment in any of our ongoing and planned clinical trials, we could be required to expend significant additional financial resources and time on the completion of clinical development of that product candidate.

General and Administrative Expenses

General and administrative expense consists primarily of employee related costs, including salaries, bonuses, benefits, share-based compensation and other related costs, as well as expenses for outside professional services, including legal, accounting and audit services and other consulting fees, rent expense, directors and officers insurance expenses, investor and public relations expenses and other general administrative expenses.

We anticipate that our general and administrative expenses will increase in the future as we increase our headcount to support our continued research activities and development of our product candidates. We also anticipate that we will continue to incur significant accounting, audit, legal, regulatory, compliance and directors and officers insurance costs as well as investor and public relations expenses associated with operating as a public company.

Other Income (Expense), Net

Other income (expense), net consists primarily of realized and unrealized gains and losses on foreign exchange, interest income earned on cash and cash equivalents and marketable securities, and other expenses such as interest and bank charges.

Realized and unrealized gains and losses on foreign exchange consist of realized and unrealized gains and losses from holding cash and foreign currency denominated other receivables, accounts payable, accrued expenses and other current liabilities as well as operating lease liabilities.



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Results of Operations

Comparison of the Years Ended December 31, 2022 and 2021



The following table summarizes our results of operations for the years ended
December 31, 2022 and 2021:

                                                       YEAR ENDED
                                                      DECEMBER 31,
                                                   2022           2021          CHANGE
                                                             (in thousands)
Revenue:
Collaboration agreements                        $  131,830     $    7,600     $  124,230

Operating expenses: Research and development, net of tax credits 119,066 90,047 29,019 General and administrative

                          32,560         26,213          6,347
Total operating expenses                           151,626        116,260         35,366
Loss from operations                               (19,796 )     (108,660 )       88,864
Other income (expense), net:
Realized and unrealized gain (loss) on
foreign exchange                                       308           (144 )          452
Interest income                                      5,631            259          5,372
Other expense, net                                     (43 )          (41 )           (2 )
Total other income, net                              5,896             74          5,822
Loss before income taxes                           (13,900 )     (108,586 )       94,686
Income tax benefit (expense)                       (15,147 )        1,678        (16,825 )
Net loss                                        $  (29,047 )   $ (106,908 )   $   77,861


Revenue

Revenue was $131.8 million for the year ended December 31, 2022. Of this amount, $116.6 million related to the recognition of revenue associated with the Roche Agreement, of which $105.3 million related to the grant of the combined licenses, $2.7 million related to the clinical trial materials transferred, and $8.6 million related to the partial recognition of deferred revenue for research and development services performed towards the completion of the Continuing Trials during the period.

We also recognized $15.2 million for the year ended December 31, 2022 as revenue associated with the BMS Agreement. Of this amount, $12.5 million relates to the recognition of deferred revenue related to druggable targets as Bristol Myers Squibb waived its rights to exercise options for druggable targets directed at two separate lesions, and $2.7 million was a result of the partial recognition of the deferred revenue from the BMS Agreement, in proportion to the level of research and development services performed during the period.

Revenue was $7.6 million for the year ended December 31, 2021. Of this amount, $6.5 million related to the recognition of deferred revenue from the exercise by Bristol Myers Squibb of their option exercise for druggable targets directed at synthetic lethal lesion, pursuant to the terms of the BMS Agreement, and the related option fees received, and $1.1 million was a result of the partial recognition of the deferred revenue from the BMS Agreement, in proportion to the level of research and development services performed during the period.

Research and Development Expenses, Net of Tax Credits

Research and development expenses were $119.1 million for the year ended December 31, 2022, compared to $90.0 million for the year ended December 31, 2021. The increase of $29.1 million in research and development expenses was primarily due to:

a $13.1 million increase in direct external costs related to the advancement of the RP-6306 program, and the advancement of preclinical programs into IND-enabling studies;



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a $12.6 million increase in personnel-related costs, including a $4.3 million increase in share-based compensation, primarily related to increased headcount in support of our discovery and development activities;

a $0.3 million decrease in laboratory supplies and research materials; and

a $3.7 million increase in other research and development costs, including travel, depreciation, facilities, and external costs not involved in the RP-6306, camonsertib or the advancement of preclinical programs into IND-enabling studies.

General and Administrative Expenses

General and administrative expenses were $32.6 million for the year ended December 31, 2022, compared to $26.2 million for the year ended December 31, 2021. The increase of $6.4 million in general and administrative expenses consisted of:

a $4.0 million increase in personnel related costs, including a $2.5 million increase in share-based compensation, primarily related to increased headcount as we scale the organization;

a $2.8 million increase in professional fees associated with the Roche collaboration and the establishment of our at-the-market facility program with Cowen and Company, LLC, as well as timing of audit and Sarbanes-Oxley Act of 2002 related compliance efforts;

a $0.8 million increase in other general and administrative expenses mainly related to facilities and IT costs; and

a $1.2 million decrease in our D&O insurance premium.

Other Income (Expense), Net

Other income, net was $5.9 million for the year ended December 31, 2022, compared to $0.1 million for the year ended December 31, 2021. The increase of $5.8 million in other income was primarily attributable to higher sums invested in cash and cash equivalents and marketable securities as well as higher interest rates.

Income Tax (Expense) Benefit

Income tax expense was $15.1 million for the year ended December 31, 2022, primarily due to the taxable income in our U.S. subsidiary and utilization of federal and state research and development tax credit carry forwards.

Income tax benefit was $1.7 million for the year ended December 31, 2021, primarily due to U.S. federal and state research and development tax credits generated, offset by taxable income in our U.S. subsidiary.

The decrease of $16.8 million in the income tax benefit was primarily driven by the Tax Cuts and Jobs Act effective January 1, 2022 requiring capitalization and amortization of all IRC 174 costs associated with research and development costs, offset by the utilization of federal and state research and development tax credit carry forwards.

Liquidity and Capital Resources

Since our inception, we have not recognized any revenue from product sales and have incurred operating losses and negative cash flows from our operations. We have not yet commercialized any product and we do not expect to generate revenue from sales of any products for several years, if at all. On June 23, 2020, we completed our IPO whereby we issued an aggregate of 12,650,000 common shares, which includes the exercise in full of the underwriters' option to purchase up to an additional 1,650,000 common shares, at a public offering price of $20.00 per share. The aggregate net proceeds received by us from the IPO were $232.0 million, after deducting underwriting commissions, and offering expenses of $3.2 million. In November 2021, we completed a follow-on offering whereby we issued 4,600,000 common shares, including the exercise in full by the underwriters of their option to purchase up to 600,000 additional common shares, at a public offering price of $22.00 per share, for net proceeds of $94.3 million, after deducting underwriting commissions as well as offering expenses of $0.8 million.



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In August 2022, we entered into a Common Shares Sale Agreement, or the Sales Agreement, with Cowen and Company, LLC as sales agent, pursuant to which we may issue and sell common shares from time to time, or the ATM Shares. The ATM Shares to be sold under the Sales Agreement, if any, will be issued and sold pursuant to our shelf registration statement on Form S-3 (File No. 333-257668), up to a maximum aggregate amount of $125.0 million. No shares have been issued under the Sales Agreement as of the date of this Annual Report on Form 10-K.

Prior to our IPO, we had funded our operations primarily through equity financings, having raised an aggregate of approximately $135.2 million of gross proceeds from the sale of our preferred shares and $15.0 million of gross proceeds from the issuance of a warrant to acquire our common shares. We have also partnered with Ono for our Pol? inhibitor program and Bristol Myers Squibb for research and development of potential new product candidates for the treatment of cancer and received initial upfront and additional payments of approximately $60.5 million in the aggregate. In June 2022, we entered into a collaboration and license agreement with Roche for camonsertib and have received initial payments under the terms of the collaboration in the aggregate amount of $134.6 million.

We expect to incur significant expenses and operating losses for the foreseeable future as we advance our product candidates through preclinical and clinical development, seek regulatory approval and pursue commercialization of any approved product candidates and we will continue to incur additional costs associated with operating as a public company. We expect that our research and development and general and administrative costs will increase in connection with our planned research and development activities.

Beginning in 2022, the Tax Cuts and Jobs Act of 2017 eliminates the option to deduct U.S.-based research and development expenditures in the current fiscal year and requires taxpayers to amortize them over five years pursuant to Internal Revenue Code Section 174. This provision has increased our 2022 cash payments of income taxes significantly as compared to 2021. Although Congress is considering legislation that would defer the amortization requirement to later years, we have no assurance that the provision will be repealed or otherwise modified. If the requirement is not modified, it will materially reduce our cash flows. Changes in our tax provisions or an increase in our tax liabilities, whether due to changes in applicable laws and regulations or our interpretation or application thereof, could have a material adverse effect on our financial position, results of operations and/or cash flows.

As of December 31, 2022, our cash and cash equivalents and marketable securities on hand was $343.9 million. We believe that our existing cash and cash equivalents, and marketable securities on hand will be sufficient to fund our anticipated operating and capital expenditure requirements into 2026. We have based this estimate on assumptions that may prove to be wrong, and we could exhaust our capital resources sooner than we expect. If we receive regulatory approval for any of our product candidates, we expect to incur significant commercialization expenses related to product manufacturing, sales, marketing, and distribution, depending on where we choose to commercialize. We may also require additional capital to pursue in-licenses or acquisitions of other product candidates.

Because of the numerous risks and uncertainties associated with research, development, and commercialization of our product candidates, we are unable to estimate the exact amount of our working capital requirements. Our future capital requirements will depend on many factors, including:

the initiation, timing, costs, progress and results of our product candidates, including our ongoing Phase 1 clinical trials of RP-6306;

the progress of preclinical development and possible clinical trials of our current earlier-stage programs;

the scope, progress, results and costs of our research programs and preclinical development of any additional product candidates that we may pursue;

the development requirements of other product candidates that we may pursue;

our headcount growth and associated costs as we expand our research and development and establish a commercial infrastructure;

the timing and amount of milestone and royalty payments that we are required to make or eligible to receive under our current or future collaboration agreements, including the Roche Agreement;

the outcome, timing and cost of meeting regulatory requirements established by the FDA, EMA and other regulatory authorities;



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the costs and timing of future commercialization activities, including product manufacturing, marketing, sales and distribution, for any of our product candidates for which we or our collaborators receive marketing approval;

the cost of expanding, maintaining and enforcing our intellectual property portfolio, including filing, prosecuting, defending and enforcing our patent claims and other intellectual property rights;

the cost of defending potential intellectual property disputes, including patent infringement actions brought by third parties against us or any of our product candidates;

the effect of competing technological and market developments;

the cost and timing of completion of commercial-scale manufacturing activities;

the extent to which we partner our programs, acquire or in-license other product candidates and technologies or enter into additional strategic collaborations;

the revenue, if any, received from commercial sales of camonsertib, RP-6306 and any future product candidates for which we or our collaborators receive marketing approval; and

the costs of operating as a public company.

Until such time, if ever, as we can generate substantial product revenues to support our cost structure, we expect to finance our cash needs through a combination of equity offerings, debt financings, collaborations and other similar arrangements. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our shareholders will be or could be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common shareholders. Debt financing and equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise funds through collaborations, or other similar arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us and/or may reduce the value of our common shares. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market our product candidates even if we would otherwise prefer to develop and market such product candidates ourselves.

Cash Flows

Comparison of the Years Ended December 31, 2022 and 2021

The following table summarizes our cash flows for each of the years presented:



                                                     YEAR ENDED
                                                    DECEMBER 31,
                                              2022             2021            CHANGE
                                                            (in thousands)
Net cash provided by (used in)
operating activities                      $        322     $    (85,796 )   $     86,118

Net cash used in investing activities (175,778 ) (1,676 ) (174,102 ) Net cash provided by financing activities

                                         880           95,557          (94,677 )
Effect of exchange rate fluctuations on
cash held                                         (330 )            (54 )           (276 )
Net (decrease) increase in cash and
cash equivalents                          $   (174,906 )   $      8,031     $   (182,937 )


Operating Activities

Net cash provided by operating activities was $0.3 million for the year ended December 31, 2022, reflecting a net loss of $29.0 million, offset by a net change of $4.4 million in our net operating assets and non-cash charges of $25.0 million. The non-cash charges primarily consist of share-based compensation for option grants to employees, as well as depreciation expense and non-cash lease expense offset by the net accretion/amortization of marketable securities and deferred tax assets. The change in our net operating assets was due to a decrease of $1.9 million in prepaid expenses and research development tax credits receivable, as well as an increase of $7.9 million in accrued



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expenses and other current liabilities, income taxes payable and deferred revenue, offset by an increase of $2.7 million in collaboration revenue receivable and other receivables, as well as a $2.8 million decrease in accounts payable and operating lease liabilities.

Net cash used in operating activities was $85.8 million for the year ended December 31, 2021, reflecting a net loss of $106.9 million, offset by a net change of $7.0 million in our net operating assets and non-cash charges of $14.1 million. The non-cash charges primarily consist of share-based compensation for option grants to employees, as well as depreciation expense and non-cash lease expense offset by deferred tax assets. The change in our net operating assets was due to a decrease of $3.6 million in other receivables, as well as an increase of $11.9 million in accounts payable, income tax payable and accrued expenses and other current liabilities, offset by an increase of $0.9 million in research and development tax credits receivable and other non-current assets, as well as a $7.6 million decrease in operating lease liabilities and deferred revenue.

The $86.1 million decrease in cash used in operating activities for the year ended December 31, 2022 compared to December 31, 2021 is primarily due to the $134.6 million upfront payment received under the Roche Agreement offset by an increase in operating expenses, specifically direct external costs and personnel-related costs, as we advance the development of our product candidates.

Investing Activities

Net cash used in investing activities was $175.8 million for the year ended December 31, 2022 and resulted primarily from purchases of marketable securities offset by proceeds from maturities of marketable securities.

Net cash used in investing activities was $1.7 million for the year ended December 31, 2021 and resulted primarily from purchases of property and equipment.

Financing Activities

Net cash provided by financing activities was $0.9 million for the year ended December 31, 2022, consisting of net proceeds from the exercise of stock options and issuance of common shares under the ESPP.

Net cash provided by financing activities was $95.6 million for the year ended December 31, 2021, consisting primarily of $94.3 million from the November 2021 issuance of shares in the follow-on offering, net of underwriting commissions and offering expenses.

Material Cash Requirements

As of December 31, 2022, we anticipate the aggregate of our cash and cash equivalents and marketable securities will be sufficient to fund our contractual obligations, as well as cash requirements to support our ongoing operations and capital expenditures. Our contractual obligations as of December 31, 2022 primarily consist of:

Collaboration and Research Agreements

Collaboration and research agreement obligations primarily relate to a strategic collaboration agreement that we entered into with the University of Texas M. D. Anderson Cancer Center, or MDACC, in March 2020. The collaboration consists of preclinical studies and clinical trials designed by us and MDACC with the research to be completed by MDACC. We have agreed to commit $10.0 million in the aggregate to fund the collaboration, with payments to be made over a period of five years, of which $5.4 million was paid as of December 31, 2022.

We also entered into an agreement with the Broad Institute, Inc., or Broad, in July 2022, under which Broad will perform specialty screening services at our request over the course of a three-year term in exchange for payments of $0.8 million per year, beginning in July 2022, totaling $2.3 million in the aggregate.



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Purchase and Other Obligations

In the normal course of business, we enter into contracts with CROs and other third parties for preclinical studies and clinical trials, research and development supplies and other testing and manufacturing services. These contracts generally do not contain minimum purchase commitments and provide for termination 30 to 90 days' prior written notice, and therefore are cancellable contracts. The amount and timing of such payments are not known as of December 31, 2022.

We have further entered into license agreements under which we are obligated to make milestone and royalty payments and incur annual maintenance fees. The future milestone or royalty payment obligations under the agreement are contingent upon future events, such as achieving certain clinical and commercial milestones or generating product sales. As of December 31, 2022, we were unable to estimate the timing or likelihood of achieving these clinical and commercial milestones or generating future product sales. See the section titled "License and Collaboration Agreements" elsewhere in this Annual Report as well as Note 7 to our annual consolidated financial statements appearing elsewhere in this Annual Report for a description of our license agreements.

Indemnification agreements

In the ordinary course of business, we may provide indemnification of varying scope and terms to vendors, lessors, business partners and other parties with respect to certain matters including, but not limited to, losses arising out of breach of such agreements or from intellectual property infringement claims made by third parties. In addition, we have entered into indemnification agreements with members of our board of directors and executive officers that will require us, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers. The maximum potential amount of future payments we could be required to make under these indemnification agreements is, in many cases, unlimited. To date, we have not incurred any material costs as a result of such indemnifications. We are not aware of any indemnification arrangements could have a material effect on our financial position, results of operations or cash flows, and we have not accrued any liabilities related to such obligations in our consolidated financial statements as of December 31, 2022.

Critical Accounting Estimates

This management's discussion and analysis is based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these consolidated financial statements requires us to make judgments and estimates that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of expenses during the reported periods. We base our estimates on historical experience, known trends and events, and various other factors that we believe to be reasonable under the circumstances. Actual results may differ from these estimates under different assumptions or conditions. On an ongoing basis, we evaluate our judgments and estimates in light of changes in circumstances, facts, and experience. The effects of material revisions in estimates, if any, will be reflected in the consolidated financial statements prospectively from the date of change in estimates.

While our accounting policies are described in more detail in the notes to our consolidated financial statements appearing elsewhere in this Annual Report, we believe the following accounting policies used in the preparation of our consolidated financial statements require the most significant judgments and estimates. See Note 2 to our annual consolidated financial statements included elsewhere in this Annual Report for a description of our other significant accounting policies.

Revenue Recognition

In the year ended December 31, 2022, our revenue was generated from our Bristol Myers Squibb collaboration agreement and the Roche collaboration and license agreement. We also have a collaboration agreement with Ono, from which revenue has yet to be recognized.

We recognize revenue in accordance with Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC, Topic 606, Revenue from Contracts with Customers, or ASC 606. We enter into collaboration and license agreements, which are within the scope of ASC 606, to discover, develop, manufacture, and



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commercialize product candidates. The terms of these agreements typically contain multiple promises or obligations, which may include: (i) licenses to compounds directed to specific targets (referred to as "exclusive licenses") and (ii) research and development activities to be performed on behalf of the collaboration partner related to the licensed targets. Payments to us under these agreements may include non-refundable license fees, customer option exercise fees, payments for research activities, reimbursement of certain costs, payments based upon the achievement of certain milestones and royalties on any resulting net product sales.

Under ASC 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, we perform the following five steps: (i) we identify the contract(s) with a customer; (ii) we identify the performance obligations in the contract; (iii) we determine the transaction price; (iv) we allocate the transaction price to the performance obligations in the contract; and (v) we recognize revenue when (or as) we satisfy a performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, we assess the goods or services promised within each contract and determine those that are performance obligations and assess whether each promised good or service is distinct. We then recognize as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied.

As part of the accounting for these arrangements, we must use significant judgment to determine: a) the number of performance obligations based on the determination under step (ii) above and whether those performance obligations are distinct from other performance obligations in the contract; b) the transaction price under step (iii) above; and c) the stand-alone selling price for each performance obligation identified in the contract for the allocation of transaction price in step (iv) above. We use judgment to determine whether milestones or other variable consideration, except for sales-based royalties, should be included in the transaction price as described further below. The transaction price is allocated to each performance obligation on a relative stand-alone selling price basis, for which we recognize revenue as or when the performance obligations under the contract are satisfied. In determining the stand-alone selling price of a license to our proprietary technology or a material right provided by a customer option, we consider market conditions as well as entity-specific factors, including those factors contemplated in negotiating the agreements as well as internally developed estimates that include assumptions related to the market opportunity, estimated development costs, probability of success and the time needed to commercialize a product candidate pursuant to the license. In validating estimated stand-alone selling price, we evaluate whether changes in the key assumptions used to determine estimated stand-alone selling price will have a significant effect on the allocation of arrangement consideration between performance obligations.

Amounts received prior to revenue recognition are recorded as deferred revenue. Amounts expected to be recognized as revenue within one year following the balance sheet date are classified as current portion of deferred revenue in the accompanying consolidated balance sheets. Amounts not expected to be recognized as revenue within one year following the balance sheet date are classified as deferred revenue, net of current portion. Amounts recognized as revenue, but not yet received or invoiced are generally recognized as contract assets.

Exclusive Licenses - If the license to our intellectual property is determined to be distinct from the other promises or performance obligations identified in the arrangement, which generally include research and development services, 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. In assessing whether a license is distinct from the other promises, we consider relevant facts and circumstances of each arrangement, including the research and development capabilities of the collaboration partner and the availability of the associated expertise in the general marketplace. In addition, we consider whether the collaboration partner can benefit from the license for its intended purpose without the receipt of the remaining promises, whether the value of the license is dependent on the unsatisfied promises, whether there are other vendors that could provide the remaining promises and whether it is separately identifiable from the remaining promises. For licenses that are combined with other promises, we utilize judgment to assess the nature of the combined performance obligation and whether the license is the predominant promise within the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue. If the license is the predominant promise, and it is determined that the license represents



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functional intellectual property, revenue is recognized at the point in time when control of the license is transferred. If it is determined that the license does not represent functional intellectual property, revenue is recognized over time using an appropriate method of measuring progress. We have recognized revenue related to such licenses from our Roche collaboration and license agreement.

Research and Development Services - The obligations under our collaboration and license agreements generally include research and development services to be performed by us to benefit the collaboration partner. For performance obligations that include research and development services, we generally recognize revenue allocated to such performance obligations based on an appropriate measure of progress. We utilize judgment to determine the appropriate method of measuring progress for purposes of recognizing revenue, which is generally an input measure such as costs incurred. We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition. The measure of progress, and thereby periods of which revenue should be recognized, are subject to estimates by management and may change over the course of the contract. Reimbursements from the partner that are the result of a collaborative relationship with the partner, instead of a customer relationship, such as co-development activities, are recorded as a reduction to research and development expense. We have recognized revenue related to such research and development services from our Bristol Myers Squibb collaboration agreement and our Roche collaboration and license agreement.

Customer Options - Our arrangements may provide a collaborator with the right to acquire additional goods or services in the future. Under these agreements, fees may be due to us (i) at the inception of the arrangement as an upfront fee or payment or (ii) upon the exercise of the customer option. If an arrangement is determined to contain customer options that allow the customer to acquire additional goods or services, the goods and services underlying the customer options are not considered to be performance obligations at the outset of the arrangement, as they are contingent upon option exercise. We evaluate the customer options for material rights, or options to acquire additional goods or services for free or at a discount. If the customer options are determined to represent a material right, the material right is recognized as a separate performance obligation at the inception of the arrangement. We allocate the transaction price to material rights based on the relative stand-alone selling price, which is determined based on the identified discount and the probability that the customer will exercise the option. Amounts allocated to a material right are not recognized as revenue until, at the earliest, the option is exercised or expires. We have recognized revenue related to such customer options from our Bristol Myers Squibb collaboration agreement.

Milestone Payments - At the inception of each arrangement that includes development milestone payments, we evaluate whether the milestones are considered probable of being achieved and estimate the amount to be included in the transaction price using the most likely amount method. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. Milestone payments that are not within our control or the control of the licensee, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. We evaluate factors such as the scientific, clinical, regulatory, commercial, and other risks that must be overcome to achieve the particular milestone in making this assessment. There is considerable judgment involved in determining whether it is probable that a significant revenue reversal would not occur. At the end of each subsequent reporting period, we reevaluate the probability of achievement of all milestones subject to constraint and, if necessary, adjusts our estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenues and earnings in the period of adjustment. If a milestone or other variable consideration relates specifically to our efforts to satisfy a single performance obligation or to a specific outcome from satisfying the performance obligation, we generally allocate the milestone amount entirely to that performance obligation once it is probable that a significant revenue reversal would not occur. To date, we have not recognized any revenue related to the achievement of such milestones.

Royalties - For arrangements that include sales-based royalties, including milestone payments based on a 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



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has been allocated has been satisfied (or partially satisfied). To date, we have not recognized any royalty revenue resulting from any of our licensing arrangements.

Accrued and Prepaid Research and Development Expenses

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued and prepaid research and development expenses as of each balance sheet date. This process involves reviewing open contracts and purchase orders, communicating with our personnel to identify services that have been performed on our behalf, and estimating the level of service performed and the associated cost incurred for the service when we have not yet been invoiced or otherwise notified of the actual cost. The majority of our service providers invoice us monthly in arrears for services performed or when contractual milestones are met. We make estimates of our accrued and prepaid expenses as of each balance sheet date based on facts and circumstances known to us at that time. We periodically confirm the accuracy of our estimates with the service providers and make adjustments if necessary.

We base our expenses related to research and development activities on our estimates of the services received and efforts expended pursuant to quotes and contracts with vendors that conduct research and development on our behalf. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows. There may be instances in which payments made to our vendors will exceed the level of services provided and result in a prepayment of the research and development expense. In accruing service fees, we estimate the time period over which services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual or prepaid balance accordingly. Non-refundable advance payments for goods and services that will be used in future research and development activities are expensed when the activity has been performed or when the goods have been received rather than when the payment is made.

Although we do not expect our estimates to be materially different from amounts incurred, if our estimates of the status and timing of services performed differ from the actual status and timing of services performed, it could result in us reporting amounts that are too high or too low in any particular period.

Share-Based Compensation

We measure share-based compensation based on the grant date fair value of the share-based awards and recognize share-based compensation expense on a straight-line basis over the requisite service period of the awards, which is generally the vesting period of the respective award. For non-employee awards, compensation expense is recognized as the services are provided, which is generally ratably over the vesting period.

Share-based compensation expense is classified in our consolidated statements of operations and comprehensive loss based on the function to which the related services are provided. We recognize share-based compensation expense for the portion of awards that have vested. Forfeitures are accounted for as they occur.

The fair value of each stock option grant is estimated on the date of grant using the Black-Scholes option-pricing model, which requires inputs based on certain subjective assumptions, including the expected share price volatility, the expected term of the option, the risk-free interest rate for a period that approximates the expected term of the option, and our expected dividend yield. The fair value of each restricted share unit is estimated on the date of grant based on the fair value of our common share on that same date. Prior to our IPO, as there was no public market for our common shares, we determined the volatility for awards granted based on an analysis of reported data for a group of guideline companies that issued options with substantially similar terms. The expected volatility has been determined using a weighted-average of the historical volatility measures of this group of guideline companies blended with the historical volatility of the Company's common shares. We expect to continue using such methodology until we have adequate historical data regarding the volatility of the trading price of our common shares on Nasdaq. The expected term of our options granted to employees has been determined utilizing the "simplified" method for awards that qualify as "plain-vanilla" options. With the adoption of ASU 2018-07, we applied the nonpublic entity practical expedient for calculating the expected term of non-employee awards, using the midpoint between the vesting date and the contractual term, which is consistent with the method used for employee awards. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods



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approximately equal to the expected term of the award. We have not paid, and do not anticipate paying, cash dividends on our common shares; therefore, the expected dividend yield is assumed to be zero.

Recently Adopted Accounting Pronouncements

See note 2 to our annual consolidated financial statements appearing elsewhere in this Annual Report for a description of recently adopted accounting pronouncements applicable to our financial statements.

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