You should read the following discussion and analysis of our financial condition and results of operations together with our financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q and our Annual Report on Form 10-K for the year ended December 31, 2021, as filed with the SEC on March 9, 2022. Some of the information contained in this discussion and analysis or set forth elsewhere in this Form 10-Q, 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 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.

Investors and others should note that we routinely use the Investor Relations section of our website to announce material information to investors and the marketplace. While not all of the information that we post on the Investor Relations section of our website is of a material nature, some information could be deemed to be material. Accordingly, we encourage investors, the media, and others interested in us to review the information that it shares on the Investor Relations section of our website, www.neximmune.com.

Overview

We are a clinical-stage biotechnology company developing a novel approach to immunotherapy designed to employ the body's own T cells to generate a specific, potent and durable immune response that mimics natural biology. Our mission is to create therapies with curative potential for patients with cancer and other life-threatening immune-mediated diseases.

The backbone of our approach is our proprietary Artificial Immune Modulation, or AIMTM. One of the critical advantages of the AIM technology platform is the ability to rapidly customize it for new therapeutics, in a modular, Lego-like manner. NexImmune has developed protein conjugation techniques so that nanoparticles can be customized quickly for different antigens, HLA alleles and Signal 2 messages. It is even possible to add additional signals or homing proteins. This gives the platform tremendous flexibility and application in oncology and infectious disease (where up-regulatory messages are delivered to targeted T cells) but also autoimmune disorders (where down-regulatory or apoptopic messages are delivered to targeted T cells). These conjugation techniques also apply to both the ex vivo adoptive cell therapy modality, called AIM ACT, and the in vivo directly-injectable modality, called AIM INJ.

Currently, we have two product candidates in human trials: NEXI-001 in acute myeloid leukemia, or AML, and NEXI-002 in multiple myeloma, or MM, both of which are AIM ACT therapies. Both programs have active Phase 1/2 trials ongoing. As result of changes in the approved product landscape and to conserve resources, we are pausing enrollment in our Phase 1/2 clinical trial of NEXI-002 and are exploring the potential for collaborations or partnerships to further advance the NEXI-002 development program in multiple myeloma. Our next adoptive cell therapy product candidate, NEXI-003, is our first product candidate targeted at solid tumors. We filed an IND in June 2022, and received FDA clearance in July 2022, for a Phase 1 clinical trial for NEXI-003 against HPV-associated solid tumor malignancies.

In addition to our programs using the AIM ACT modality, we are also developing "off-the-shelf" AIM INJ. The AIM INJ modality is designed to enable AIM nanoparticles to engage CD8+ T cells directly inside the body without the need for ex vivo expansion and manufacturing, which we believe will result in a greater ease of administration and a less complex and less expensive manufacturing process. We have completed substantial non-clinical work to advance the AIM INJ modality towards a potential investigational new drug application, or IND, filing, including preparing appropriate IND-enabling experiments in support of a planned clinical program focusing on solid tumors. Subject to regulatory feedback and an IND filing, we anticipate a second clinical program that would target autoimmune disease and which would be the first AIM product candidate to suppress, rather than activate, T cell function.

We were incorporated under the laws of the State of Delaware on June 7, 2011. In June 2011, we exclusively licensed the core AIM technology from The Johns Hopkins University, or Johns Hopkins. See "Business-Johns Hopkins License Agreement" for information about this license.


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To date, we have devoted substantially all of our resources to organizing and staffing our company, business planning, raising capital, identifying and developing product candidates, enhancing our intellectual property portfolio, undertaking research, conducting preclinical studies and clinical trials, and securing manufacturing for our development programs. We do not have any products approved for sale and have not generated any revenue from product sales.

To date, we have funded our operations primarily with proceeds from private placement of convertible preferred stock, our convertible promissory notes, the IPO, and an "at-the-market" offering facility. In February 2021, we completed the IPO and issued and sold an aggregate 7,441,650 shares of common stock, which included 970,650 shares of our common stock issued pursuant to the underwriters' option to purchase additional shares, at a public offering price of $17.00 per share, for net proceeds of $114.6 million after deducting underwriting discounts and commissions and other offering costs. In July 2022, we sold an an aggregate of 1,262,000 shares through our "at-the-market" offering facility resulting in net proceeds of $2.4 million.

We have incurred significant operating losses since our inception, which are mainly attributed to research and development costs and employee payroll expense included in general and administrative expenses. As of June 30, 2022, we had an accumulated deficit of $158.6 million. Our operating losses may fluctuate significantly from quarter-to-quarter and year-to-year as a result of several factors, including the timing of our preclinical studies and clinical trials and our expenditures related to other research and development activities. We expect to continue to incur operating losses for the foreseeable future. We anticipate these losses will increase substantially as we advance our product candidates through preclinical and clinical development, develop additional product candidates and seek regulatory approvals for our product candidates. We do not expect to generate any revenues from product sales unless and until we successfully complete development and obtain regulatory approval for one or more product candidates. In addition, if we obtain marketing approval for any product candidate, we expect to incur pre-commercialization expenses and significant commercialization expenses related to marketing, sales, manufacturing and distribution We may also incur expenses in connection with the in-licensing of additional product candidates. Furthermore, we expect to continue incurring costs associated with operating as a public company, including legal, accounting, investor relations, compliance and other expenses.

As a result, we will need substantial additional funding to support our continuing operations and pursue our growth strategy. Until such time as we can generate significant revenue from sales of our product candidates, if ever, we expect to finance our cash needs through public or private equity offerings, debt financings, collaborations and licensing arrangements or other capital sources. However, we may be unable to raise additional funds or enter into such other arrangements when needed on favorable terms or at all. Our failure to raise capital or enter into such other arrangements as and when needed would have a negative impact on our financial condition and could force us to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market our product candidates that we would otherwise prefer to develop and market ourselves. The Company is continually looking into further capital planning and the evaluation of strategic alternatives. There is substantial doubt about the Company's ability to continue as a going concern.

Because of the numerous risks and uncertainties associated with pharmaceutical product development, we are unable to accurately 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 product sales, we may not become profitable. If we fail to become profitable or are unable to sustain profitability on a continuing basis, we may be unable to continue our operations at planned levels and be forced to reduce or terminate our operations.

As of June 30, 2022, we had cash, cash equivalents, and marketable securities of $53.1 million.

Components of our Results of Operations

Revenue

We have not generated any revenue since our inception and do not expect to generate any revenue from the sale of products in the near future, if at all.

Research and Development Expenses

To date, our research and development expenses, have related primarily to development of NEXI-001 and NEXI-002, preclinical studies and other preclinical activities related to our portfolio. Research and development expenses are recognized as incurred and payments made prior to the receipt of goods or services to be used in research and development are capitalized until the goods or services are received. Research and development expenses also include the accrual of minimum royalties under our Johns Hopkins license.


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Research and development expenses include:

•salaries, payroll taxes, employee benefits and stock-based compensation charges for those individuals involved in research and development efforts;

•external research and development expenses incurred under agreements with contract research organizations, or CROs, and consultants to conduct our preclinical, toxicology and other preclinical studies;

•laboratory supplies;

•costs related to manufacturing product candidates, including fees paid to third-party manufacturers and raw material suppliers;

•license fees and research funding; and

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

Clinical trial and preclinical study costs are a significant component of research and development expenses and include costs associated with third-party contractors. We outsource a substantial portion of our clinical trial activities, utilizing external entities such as CROs, independent clinical investigators and other third-party service providers to assist us with the execution of our clinical trials. We also expect to incur additional expenses related to milestone and royalty payments payable to Johns Hopkins.

We plan to substantially increase our research and development expenses for the foreseeable future as we continue the development of our product candidates and seek to discover and develop new product candidates. Due to the inherently unpredictable nature of preclinical and clinical development, we cannot determine with certainty the timing of the initiation, duration or costs of future clinical trials and preclinical studies of product candidates. Clinical and preclinical development timelines, the probability of success and the amount of development costs can differ materially from expectations. We anticipate that we will make determinations as to which product candidates and development programs to pursue and how much funding to direct to each product candidate or program 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. In addition, we cannot forecast which product candidates may be subject to future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements.

Our future clinical development costs may vary significantly based on factors such as:

•per-patient trial costs;

•the number of trials required for regulatory approval;

•the number of sites included in the trials;

•the countries in which the trials are conducted;

•the length of time required to enroll eligible patients;

•the number of patients that participate in the trials;

•the number of doses that patients receive;

•the drop-out or discontinuation rates of patients;

•potential additional safety monitoring requested by regulatory agencies;

•the duration of patient participation in the trials and follow-up;


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•the phase of development of the product candidate; and

•the efficacy and safety profile of the product candidate.

General and Administrative Expenses

General and administrative expenses consist primarily of salaries and employee-related costs, including stock-based compensation, for personnel in our executive, finance and other administrative functions. Other significant costs include facility related costs, legal fees relating to intellectual property and corporate matters, professional fees for accounting and consulting services and insurance costs. We anticipate that our general and administrative expenses will increase in the future to support our continued research and development activities, pre-commercialization and, if any product candidates receive marketing approval, commercialization activities. We also anticipate increased expenses related to audit, legal, regulatory and tax-related services associated with maintaining compliance with exchange listing and SEC requirements, director and officer insurance premiums and investor relations costs associated with operating as a public company.

Interest Income

Interest income consists of interest earned on our cash equivalents and marketable securities during the period.

Interest Expense

Interest expense consists of interest accrued on the convertible notes and interest recognized upon the amortization of the beneficial conversion feature, debt issuance costs and bifurcated derivative liability. No further interest expense was recognized after the convertible notes were converted into shares of common stock upon the completion of the IPO in February 2021.

Change in Fair Value of Derivative Liability

The change in fair value of derivative liability consists entirely of the mark-to-market adjustment of the bifurcated derivative liability related to the convertible notes. As a result of our IPO, the derivative liability was settled.

Results of Operations

Comparison of the Three Months Ended June 30, 2022 and 2021

The following table summarizes our results of operations for the three months ended June 30, 2022 and 2021:



                                 Three Months Ended
                                      June 30,
                                2022           2021          Change
                                   (in thousands)
Operating expenses:
Research and development     $  11,838      $   8,125      $  3,713
General and administrative       4,088          4,038            50
Total operating expenses        15,926         12,163         3,763
Loss from operations           (15,926)       (12,163)       (3,763)
Other income (expense):
Interest income                     84              7            77
Other expense                      (19)           (26)            7
Other income (expense)              65            (19)           84
Net loss                     $ (15,861)     $ (12,182)     $ (3,679)

Research and Development Expenses. Research and development expenses were $11.8 million and $8.1 million for the three months ended June 30, 2022 and 2021, respectively. The increase of $3.7 million was due primarily to increases of $2.1 million for research and clinical trial expenses, increases to salary and benefits of $1.4 million resulting from increased headcount, and $0.2 million in stock compensation expense. We have not historically tracked internal research and development expenses by product candidate.


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General and Administrative Expenses. General and administrative expenses were $4.1 million and $4.0 million for the three months ended June 30, 2022 and 2021, respectively. The increase of $0.1 million was due primarily to increases of $0.6 million in professional fees, offset by a reduction of $0.5 million in salary, benefits, and stock compensation expense.

Comparison of the Six Months Ended June 30, 2022 and 2021

The following table summarizes our results of operations for the six months ended June 30, 2022 and 2021:



                                                      Six Months Ended
                                                          June 30,
                                                    2022           2021          Change
                                                       (in thousands)
Operating expenses:
Research and development                         $  22,286         14,138      $   8,149
General and administrative                           8,693          8,096            597
Total operating expenses                            30,979         22,233          8,746
Loss from operations                               (30,979)       (22,233)        (8,746)
Other income (expense):
Interest income                                        117             10            107
Change in fair value of derivative liability               -        2,425         (2,425)
Interest expense                                         -           (904)           904
Other expense                                          (22)           (27)             5
Other income                                            96          1,504         (1,409)
Net loss                                         $ (30,884)     $ (20,729)     $ (10,155)

Research and Development Expenses. Research and development expenses were $22.3 million and $14.1 million for the six months ended June 30, 2022 and 2021, respectively. The increase of $8.1 million was due primarily to increases of $3.9 million for research and clinical trial expenses, increases to salary and benefits of $3.0 million resulting from increased headcount, and $1.2 million in stock compensation expense. We have not historically tracked internal research and development expenses by product candidate.

General and Administrative Expenses. General and administrative expenses were $8.7 million and $8.1 million for the six months ended June 30, 2022 and 2021, respectively. The increase of $0.6 million was due primarily to increases of $1.1 million in professional fees, an increase to salary and benefits of $0.4 million from increased headcount, offset by a reduction of $0.9 million in stock compensation expense.

Change in Fair Value of Derivative Liability. The change in fair value of derivative liability was $0 and $2.4 million for the six months ended June 30, 2022 and 2021, respectively. The decrease reflected the remeasurement of the derivative liability immediately before the conversion of the convertible notes into shares of common stock upon the completion of the IPO in February 2021. Following the IPO there are no derivative instruments.

Interest Expense. Interest expense was $0 and $0.9 million for the six months ended June 30, 2022 and 2021, respectively. The increase is due to the issuance of convertible debt during the period from April 2020 into January 2021. The convertible notes were converted into shares of common stock upon the completion of the IPO in February 2021.

Liquidity and Capital Resources

We have incurred net losses and negative cash flows from operations since our inception and anticipate we will continue to incur net losses for the foreseeable future. As of June 30, 2022, we had cash, cash equivalents, and marketable securities of $53.1 million. We expect our negative cash flows from operating activities to continue and thus have determined that the losses and negative cash flows from operations and uncertainty in generating sufficient cash to meet our obligations and sustain our operations raise substantial doubt about our ability to continue as a going concern for at least one year from the issuance date of these Financial Statements.

We believe that our existing cash and cash equivalents, including amounts received subsequent to June 30, 2022, will be sufficient to fund our activities into second quarter of 2023.


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As our research and development activities mature and develop over the next year, we will likely require substantial funds to continue such activities, depending upon events that are difficult to predict at this time. In this regard, management plans to raise additional capital through financing activities that may include public offerings and private placements of our common stock, preferred stock offerings, collaborations and licensing arrangements and issuances of debt and convertible debt instruments. In the absence of additional capital, the Company plans to strategically manage its uncommitted spend, execute its priorities and implement cost saving measures to reduce research and development and general and administrative expenditures which could include minimizing staff costs and delaying or terminating manufacturing and clinical trial costs. There are inherent uncertainties associated with fundraising activities and activities to manage our uncommitted spending and the successful execution of these activities may not be within our control. There are no assurances that such additional funding will be obtained and that the Company will succeed in its future operations. If we cannot successfully raise additional capital and implement our strategic development plan, our liquidity, financial condition and business prospects will be materially and adversely affected. We are continually looking into further capital planning and the evaluation of strategic alternatives. There is substantial doubt about our ability to continue as a going concern.

Sources of Liquidity

To date, we have financed our operations principally through private placements of our redeemable convertible preferred stock, our convertible promissory notes, the IPO, and an "at-the-market" offering facility.

Series A Preferred Stock Financing

From December 2017 through August 2018, we issued an aggregate of 121,735,303 shares of our Series A Redeemable Convertible Preferred Stock at a purchase price of $0.2951 per share for aggregate consideration of $25.0 million plus conversion of convertible notes.

In January 2019 and February 2019, we issued an aggregate of 22,047,361 shares of our Series A-2 Preferred Stock at a purchase price of $0.3523 per share for aggregate consideration of $7.8 million.

In November 2019 and December 2019, we issued an aggregate of 31,209,734 shares of our Series A-3 Preferred Stock at a purchase price of $0.3523 per share for aggregate consideration of $11.0 million.

Convertible Note Financing

From April 2020 through December 31, 2020, we issued $21,618,286 aggregate principal amount of convertible notes, which bear interest at the rate of 6% per annum and mature in April 2021.

In January 2021, we issued an additional $9,031,480 aggregate principal amount of convertible notes, which bore interest at the rate of 6% per annum and had a scheduled maturity date in April 2021.

Paycheck Protection Program Loan

On April 23, 2020, we entered into an unsecured loan agreement with JPMorgan Chase Bank, or Chase, under the terms of which Chase loaned us $843,619, or the PPP Loan, pursuant to the Paycheck Protection Program, or PPP, under the Coronavirus Aid, Relief, and Economic Security Act, or CARES Act. In accordance with the requirements of the CARES Act, we used the proceeds primarily for payroll costs and other eligible expenses. The PPP Loan had a maturity date of April 23, 2022 and accrued interest at an annual rate of 0.98%. Interest and principal payments were deferred for the first six months of the loan. Thereafter, monthly interest and principal payments were due until the loan is fully satisfied. The promissory note evidencing the PPP Loan contained customary events of default resulting from, among other things, default in the payments. The use of loan proceeds must be for payroll costs, payment of interest on covered mortgage obligations, rent and utility costs over either an eight-week or 24-week period, at our option, following our receipt of the loan proceeds. We elected to use the proceeds over a 24-week period. We treat the PPP loan as debt under ASC 470, Debt. The CARES Act and the PPP provide a mechanism for forgiveness of up to the full amount borrowed. We submitted the PPP Loan forgiveness application in March 2021. The Company submitted the PPP Loan forgiveness application in March 2021 and received full forgiveness from the $843,619 loan under the PPP in July 2021.

Initial Public Offering

In February 2021, we completed the IPO and issued and sold an aggregate 7,441,650 shares of common stock, which included 970,650 shares of our common stock issued pursuant to the underwriters' option to purchase additional shares, at a


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public offering price of $17.00 per share, for net proceeds of $114.6 million after deducting underwriting discounts and commissions and other offering costs.

"At-the-market" offering facility

In July 2022, we sold an aggregate of 1,262,000 shares through our "at-the-market" offering facility resulting in net proceeds of $2.4 million.

Cash Flows

The following table sets forth a summary of the net cash flow activity for the six months ended June 30, 2022 and 2021:



                                                                  2022           2021
                                                                     (in thousands)
Net cash provided by (used in):
Operating activities                                           $ (28,200)     $ (24,770)
Investing activities                                           $  38,522      $ (40,616)
Financing activities                                           $      33      $ 124,170

Net increase in cash, cash equivalents and restricted cash $ 10,355 $ 58,785

Operating Activities

Net cash used in operating activities was $28.2 million and $24.8 million for the six months ended June 30, 2022 and 2021, respectively. The net cash used in operating activities for the six months ended June 30, 2022 and 2021 was primarily due to our net loss of $30.9 million, resulting from research and development expenses of $22.3 million as we continue our clinical program and preclinical research programs and $8.7 million of administrative expenses for salary and related expenses and professional fees.

The net cash used in operating activities for the six months ended June 30, 2021 was primarily due to our net loss of $20.7 million, consisting of $14.1 million for research and development expenses primarily in preclinical research expenses and manufacturing as we prepared for our clinical program, and $8.1 million in administrative expenses for salary and related expenses and professional fees.

Investing Activities

Net cash provided by investing activities was $38.5 million for the six months ended June 30, 2022 resulting from the maturities of $59.0 million and redemption of $1.5 million in available-for-sale marketable securities, partially offset by the purchases of $21.5 million in available-for-sale marketable securities and the purchase of property and equipment of $0.5 million. Net cash used in investing activities of $40.6 million for the six months ended June 30, 2021 was primarily due to the purchase $39.0 million of in available-for-sale marketable securities and the purchase of $1.6 million in property and equipment.

Financing Activities

Net cash provided by financing activities was immaterial for the six months ended June 30, 2022. Net cash provided by financing activities was $124.2 million for the six months ended June 30, 2021 primarily due to the net proceeds of $114.7 million from the IPO and $9.0 million from the issuance of convertible debt.

Funding Requirements

We believe that our existing cash and cash equivalents and marketable securities, together with the net proceeds from our IPO, will be sufficient to meet our anticipated cash requirements into the second quarter of 2023. However, our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement that involves risks and uncertainties, and actual results could vary materially. We have based this estimate on assumptions that may prove to be wrong, and we could deplete our capital resources sooner than we expect. If we are not able to raise additional funding, we may not be able to enter into successful collaborations under favorable terms. As a result, we may be unable to realize value from our assets and discharge our liabilities in the normal course of business.


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

•the initiation, progress, timing, costs and results of drug discovery, preclinical studies and clinical trials of NEXI-001, NEXI-002, NEXI-003 and any other future product candidates;

•the potential to expand the eligible patient population for NEXI-001 to include haplo-identical donor/patients;

•the emerging competition and the potential to evaluate NEXI-002 in earlier lines of therapy or combinations for multiple myeloma patients based on the safety profile and clinical signs observed;

•the consideration of collaborations or strategic partnerships to continue the development of NEXI-002;

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

•the outcome, timing and costs of seeking regulatory approvals;

•the cost of manufacturing NEXI-001 and NEXI-002 and future product candidates for clinical trials in preparation for marketing approval and in preparation for commercialization;

•the costs associated with hiring additional personnel and consultants as our preclinical and clinical activities increase;

•the emergence of competing therapies and other adverse market developments;

•the ability to establish and maintain strategic licensing or other arrangements and the financial terms of such agreement;

•the costs involved in preparing, filing, prosecuting, maintaining, expanding, defending and enforcing patent claims, including litigation costs and the outcome of such litigation;

•the extent to which we in-license or acquire other products and technologies; and

•the costs of operating as a public company.

Until such time, if ever, as we can generate substantial product revenues to support our capital requirements, we expect to finance our cash needs through cash and cash equivalents and marketable securities on hand and a combination of public or private equity offerings, debt financings, collaborations and licensing arrangements or other capital sources. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our stockholders 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 stockholders. 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 need to relinquish valuable rights to our product candidates, future revenue streams or research programs or may have to grant licenses on terms that may not be favorable to us and/or may reduce the value of our common stock. If we are unable to raise additional funds through equity or debt financings as and 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.

Critical Accounting Policies and Significant Judgments and Estimates

Our management's discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in our financial statements. On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses and stock-based compensation. We base our estimates on historical experience, known trends and events, and various other factors that we believe to be 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. Our actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in Note 3, "Summary of Significant Accounting Policies", in our Form 10-K for the year ended December 31, 2021, we believe the following accounting policies and estimates to be most critical to the preparation of our financial statements.


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Stock-Based Compensation Expense

Stock-based compensation expense represents the cost of the grant date fair value of equity awards recognized over the requisite service period of the awards (usually the vesting period) on a straight-line basis. We estimate the fair value of equity awards using the Black-Scholes option pricing model and recognize forfeitures as they occur. Estimating the fair value of equity awards as of the grant date using valuation models, such as the Black-Scholes option pricing model, is affected by assumptions regarding a number of variables, including the risk-free interest rate, the expected stock price volatility, the expected term of stock options, the expected dividend yield and the fair value of the underlying common stock on the date of grant. Changes in the assumptions can materially affect the fair value and ultimately how much stock-based compensation expense is recognized. These inputs are subjective and generally require significant analysis and judgment to develop. See Note 3, "Summary of Significant Accounting Policies" contained in our Annual Report on Form 10-K for the year ended December 31, 2021, for information concerning certain of the specific assumptions we used in applying the Black-Scholes option pricing model to determine the estimated fair value of our stock options granted for the three and six months ended June 30, 2022 and 2021.

Accrued Research and Development Expenses

As part of the process of preparing our financial statements, we are required to estimate our accrued 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. We make estimates of our accrued 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. The significant estimates in our accrued research and development expenses include the costs incurred for services performed by our vendors in connection with research and development activities for which we have not yet been invoiced.

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 expense accordingly. 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 actually 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. To date, there have been no material differences between our estimates of such expenses and the amounts actually incurred.

Other Company Information

Emerging Growth Company and Smaller Reporting Company Status

We are an emerging growth company ("EGC") as defined in the Jumpstart Our Business Startups Act of 2012, as amended, or the JOBS Act. We will remain an EGC until the earlier of (1) December 31, 2026, (2) the last day of the fiscal year in which we have total annual gross revenues of at least $1.07 billion, (3) the date on which we are deemed to be a "large accelerated filer" as defined in Rule 12b-2 under the Securities Exchange Act of 1934, as amended, or the Exchange Act, or (4) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the prior three-year period. An EGC may take advantage of specified reduced reporting requirements and is relieved of certain other significant requirements that are otherwise generally applicable to public companies. As an EGC,

•we may present only two years of audited financial statements, plus unaudited condensed financial statements for any interim period, and related Management's Discussion and Analysis of Financial Condition and Results of Operations in this filing.

•we may avail ourselves of the exemption from the requirement to obtain an attestation and report from our auditors on the assessment of our internal control over financial reporting pursuant to the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act;


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•we may provide reduced disclosure about our executive compensation arrangements; and

•we may not require stockholder non-binding advisory votes on executive compensation or golden parachute arrangements.

We have elected to take advantage of certain of the reduced disclosure obligations in the registration statement of which this filing is a part and may elect to take advantage of other reduced reporting requirements in future filings. As a result, the information that we provide to our stockholders may be different than you might receive from other public reporting companies in which you hold equity interests.

Under the JOBS Act, EGCs can also delay adopting new or revised accounting standards until such time as those standards apply to private companies, which may make our financial statements less comparable to companies that comply with new or revised accounting pronouncements as of public company effective dates. Until the date that we are no longer an EGC or affirmatively and irrevocably opt out of the exemption provided by Section 7(a)(2)(B) of the Securities Act of 1933, as amended, or the Securities Act, upon issuance of a new or revised accounting standard that applies to our financial statements and that has a different effective date for public and private companies, we will disclose the date on which we will adopt the recently issued accounting standard.

We are also a "smaller reporting company," meaning that the market value of our stock held by non-affiliates plus the proposed aggregate amount of gross proceeds to us as a result of the IPO was less than $700.0 million and our annual revenue is less than $100.0 million during the most recently completed fiscal year. After the IPO we may continue to be a smaller reporting company if either (1) the market value of our stock held by non-affiliates is less than $250.0 million or (2) our annual revenue is less than $100.0 million during the most recently completed fiscal year and the market value of our stock held by non-affiliates is less than $700.0 million. If we are a smaller reporting company at the time we cease to be an EGC, we may continue to rely on exemptions from certain disclosure requirements that are available to smaller reporting companies. Specifically, as a smaller reporting company we may choose to present only the two most recent fiscal years of audited financial statements in our Quarterly Report on Form 10-Q and, similar to EGCs, smaller reporting companies have reduced disclosure obligations regarding executive compensation.

Recently Issued and Adopted Accounting Pronouncements

A description of recently issued and adopted accounting pronouncements that may potentially impact our financial position and results of operations is disclosed in Note 2, "Basis of Presentation".

Off-Balance Sheet Arrangements

During the periods presented we did not have, nor do we currently have, any off-balance sheet arrangements as defined under SEC rules.

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