You should read the following discussion and analysis of our financial condition and results of operations in conjunction with the financial statements and the related notes to those statements included later in this Annual Report. In addition to historical financial information, the following discussion contains forward-looking statements that reflect our plans, estimates, beliefs and expectations that involve risks and uncertainties. Our actual results and the timing of events could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to these differences include those discussed below and elsewhere in this Annual Report, particularly in Item 1A. "Risk Factors" and "Special Note Regarding Forward-Looking Statements."

Overview

We are a clinical-stage oncology company focused on leveraging a deep scientific understanding of cancer biology and medicinal chemistry to develop and advance novel, orally available therapies for the treatment of solid tumors. Our philosophy is to build a company based upon not only creative science and thoughtful management, but also upon the efficient translation of those ideas into therapies that will improve patient's lives. To this end, we currently are advancing three programs, TPST-1495, TPST-1120 and a third program targeting the three prime repair exonuclease ("TREX-1"). TPST-1495 is a dual antagonist of the EP2 and EP4 prostaglandin E2 receptors, and, to our knowledge, is the only such dual antagonist in clinical development. TPST-1495 is currently in a Phase 1 trial in solid tumors. Our second clinical program, TPST-1120, is a selective antagonist of peroxisome proliferator-activated receptor alpha (" PPAR?"), and is also in a Phase 1 trial in solid tumors. Similar to TPST-1495, we believe TPST-1120 is the only PPAR? antagonist in clinical development. We also have a third program in


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preclinical studies that could be the first to target TREX-1, a cellular enzyme that regulates the innate immune response in tumors.

We have no products approved for commercial sale and have not generated any revenue from product sales. From inception to December 31, 2021, we have raised $150.1 million, through sales of common stock, convertible preferred stock and issuance of debt.

We have never been profitable and has incurred operating losses in each period since inception. Our net losses were $28.3 million and $19.2 million for the years ended December 31, 2021 and 2020, respectively. As of December 31, 2021, we had an accumulated deficit of $100.1 million. Substantially all of the operating losses resulted from expenses incurred in connection with our research and development programs and from general and administrative costs associated with our operations.

We expect to incur significant expenses and increasing operating losses for at least the next several years as we initiate and continue the clinical development of, and seek regulatory approval for, our product candidates and add personnel necessary to advance our pipeline of clinical-stage product candidates. In addition, operating as a publicly traded company will involve the hiring of additional financial and other personnel, upgrading our financial information and other systems, and incurring substantial costs associated with operating as a public company. We expect our operating losses will fluctuate significantly from quarter to quarter and year to year due to timing of clinical development programs and efforts to achieve regulatory approval.

As of December 31, 2021, we had cash and cash equivalents of $51.8 million. Our ability to fund continued development will require additional capital, and we intend to raise such capital through the issuance of additional debt or equity including in connection with potential merger opportunities, or through business development activities. Our ability to continue as a going concern is dependent upon our ability to successfully accomplish these plans and secure sources of financing and ultimately attain profitable operations. If we are unable to obtain adequate capital, we could be forced to cease operations.

Recent Developments

Oxford Loan and Security Agreement

On January 15, 2021, we entered into a loan and security agreement with Oxford Finance LLC ("Oxford") to borrow a term loan amount of $35.0 million to be funded in three tranches. Tranche A of $15.0 million was funded to us on January 15, 2021. Tranche B of $10.0 million will be available through March 31, 2022 contingent upon achievement of each of the following: (i) receipt of at least $50.0 million in Series C equity capital, (ii) initiation of the Phase 1 combination study of TPST-1495 or monotherapy expansion study, and (iii) initiation of Phase 2 trial of TPST-1120 or the 1L Triplet Collaboration study. Tranche C of $10.0 million is available at Oxford's option. The term loan matures on August 1, 2025 and has an annual floating interest rate of 7.15% which is an index rate plus 7%. The index rate is the greater of (i) 30-day US LIBOR or (ii) 0.15%.

Merger Agreement

On March 29, 2021, TempestTx, Inc. ("Private Tempest") and Millendo Therapeutics, Inc. ("Millendo") entered into an Agreement and Plan of Merger (the "Merger Agreement"). Concurrent with the execution and delivery of the Merger Agreement, Private Tempest entered into funding agreements with certain investors named therein, pursuant to which the investors agreed to purchase, in the aggregate, $30.0 million of common stock of Private Tempest, convertible into securities of Millendo.

On June 25, 2021, Private Tempest closed the merger with Millendo. Pursuant to the Merger Agreement, Mars Merger Corp. ("Merger Sub"), a direct, wholly owned subsidiary of Millendo merged with and into Private Tempest, with Private Tempest surviving as a wholly owned subsidiary of Millendo. Following the closing of the merger, Millendo effected a 1-for-15 reverse stock split of its common stock and changed its corporate name to Tempest Therapeutics, Inc.

Components of Results of Operations

Research and Development Expense

Research and development expenses represent costs incurred to conduct research and development, such as the development of our product candidates.


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We recognize all research and development costs as they are incurred. Research and development expenses consist primarily of the following:

•Salaries, benefits and stock-based compensation;



•licensing costs;

•allocated occupancy;

•materials and supplies;

•contracted research and manufacturing;

•consulting arrangements; and

•other expenses incurred to advance our research and development activities.

The largest component of our operating expenses has historically been the investment in research and development activities. We expect research and development expenses will increase in the future as we advance our product candidates into and through clinical trials and pursues regulatory approvals, which will require a significant investment in costs of clinical trials, regulatory support and contract manufacturing and inventory build-up. In addition, we continue to evaluate opportunities to acquire or in-license other product candidates and technologies, which may result in higher research and development expenses due to license fee and/or milestone payments, as well as added clinical development costs.

The process of conducting clinical trials necessary to obtain regulatory approval is costly and time consuming. We may never succeed in timely developing and achieving regulatory approval for our product candidates. The probability of success of our product candidates may be affected by numerous factors, including clinical data, competition, manufacturing capability and commercial viability. As a result, we are unable to determine the duration and completion costs of our development projects or when and to what extent we will generate revenue from the commercialization and sale of any of our product candidates.

General and Administrative Expenses

General and administrative expenses consist of employee-related expenses, including salaries, benefits, travel and noncash stock-based compensation, for our personnel in executive, finance and accounting, and other administrative functions, as well as fees paid for legal, accounting and tax services, consulting fees and facilities costs not otherwise included in research and development expense. Legal costs include general corporate legal fees and patent costs. We expect to incur additional expenses as a result of becoming a public company following completion of the merger, including expenses related to compliance with the rules and regulations of the SEC and Nasdaq, additional insurance, investor relations and other administrative expenses and professional services.

Other (Expense) Income , Net

Other (expense) income, net consists primarily of interest expense, interest income, and various income or expense items of a non-recurring nature.


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Results of Operations



The following table summarizes our operating results for the years ended
December 31, 2021 and 2020:

                                                       2021           2020
Expenses:                                                 (in thousands)
Research and development                            $  17,166      $  14,389
General and administrative                              9,820          4,909
Total expenses                                         26,986         19,298
Operating loss                                        (26,986)       (19,298)
Interest expense                                       (1,282)             -
Interest income and other income (expense), net           (34)            90
Provision for income taxes                                  -              -
Net loss                                            $ (28,302)     $ (19,208)



Research and Development

Our research and development expenses for the years ended December 31, 2021 and 2020 were primarily incurred in connection with our most advanced product candidates, TPST-1120 and TPST-1495. We have not historically tracked research and development expense by program other than direct external expenses in conducting clinical trials for TPST-1120 and TPST-1495. We typically have various early-stage research and drug discovery projects, as well as various potential product candidates undergoing clinical trials. Our internal resources, employees and infrastructure are not directly tied to any one research and drug discovery project and our resources are typically deployed across multiple projects. As such, we do not maintain information regarding these costs incurred for these early-stage research and drug discovery programs on a project specific basis.

Research and development expense increased by $2.8 million to $17.2 million for the year ended December 31, 2021. The following table summarizes our research and development expenses for the years ended December 31, 2021 and 2020:



                                                2021          2020
                                                  (in thousands)

Research and development outside services $ 11,355 $ 9,612 Compensation expense

                            2,869         2,070
Stock-based compensation expense                  303           389
Consulting and professional services            1,634         1,352
Other expenses                                  1,005           966

Total research and development expense $ 17,166 $ 14,389

The growth in total research and development expense of $2.8 million for the year ended December 31, 2021 was primarily attributable to expanded research and development efforts and increased fees for consulting services and compensation expenses.

General and Administrative

General and administrative expenses increased by $4.9 million to $9.8 million for the year ended December 31, 2021. The increase was primarily due to an increase in compensation related expense of $1.7 million and fees associated with audit and tax services related to the Millendo merger of $1.9 million.

Other (Expense) and Income, Net


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For the year ended December 31, 2021, total interest expense was $1.3 million related to the Oxford Loan. There was no interest expense for the year ended December 31, 2020. Interest income was $7 and $90 for the years ended December 31, 2021 and 2020, respectively.

Liquidity and Capital Resources

Sources of Liquidity

Since inception through December 31, 2021, our operations have been financed primarily by net cash proceeds from the sale of our common stock, convertible preferred stock and issuance of debt. As of December 31, 2021, we had $51.8 million in cash and cash equivalents and an accumulated deficit of $100.1 million. We expect that our research and development and general and administrative expenses will increase, and, as a result, we anticipate that we will continue to incur increasing losses in the foreseeable future.

We believe our cash and cash equivalents as of December 31, 2021 and our access to our term loan will fund our ongoing working capital, investing, and financing requirements for at least the next 12 months.

On January 15, 2021, we entered into a loan and security agreement with Oxford to borrow a term loan amount of $35.0 million to be funded in three tranches. Tranche A of $15.0 million was funded on January 15, 2021. Tranche B of $10.0 million will be available through March 31, 2022 contingent upon achievement of each of the following: i) receipt of at least $50.0 million in Series C equity capital, ii) initiation of the Phase 1 combination study of TPST-1495 or monotherapy expansion study, and iii) initiation of Phase 2 trial of TPST-1120 or the 1L Triplet Collaboration study. Tranche C of $10.0 million is available at Oxford's option. The term loan matures on August 1, 2025 and has an annual floating interest rate of 7.15% which is an index rate plus 7%. The index rate is the greater of (i) 30-day US LIBOR or (ii) 0.15%.

On July 23, 2021, we entered into a sales agreement (the "Sales Agreement") with Jefferies LLC (the "Agent"), pursuant to which we may sell, from time to time, up to an aggregate sales price of $100.0 million of our common stock through the Agent in a series of one or more ATM equity offerings. As of December 31, 2021, we sold 248,160 shares of common stock under the ATM Program for net proceeds of approximately $3.7 million.

Cash Flows

The following table summarizes our cash flows for the years ended December 31, 2021 and 2020:



                                               2021           2020
                                                  (in thousands)
Cash used in operating activities           $ (25,957)     $ (19,017)
Cash used in investing activities                 (97)            (6)

Cash provided by financing activities 59,063 34,599 Net increase in cash and cash equivalents $ 33,009 $ 15,576

Cash flows from operating activities

Cash used in operating activities for the year ended December 31, 2021 was $26.0 million, consisting of a net loss of $28.3 million, add back of non-cash adjustments for depreciation, stock-based compensation, non-cash operating lease expense and other non-cash items totaling $3.0 million, plus changes in operating assets and liabilities of $0.6 million.

Cash used in operating activities for the year ended December 31, 2020 was $19.0 million consisting of a net loss of $19.2 million, add back of non-cash adjustments for depreciation, stock-based compensation, non-cash operating lease expense offset by other non-cash items totaling $1.3 million, less changes in operating assets and liabilities of $1.1 million.

Cash flows from investing activities

Cash used in investing activities for the years ended December 2021 and 2020 was related to purchases of property and equipment, primarily related to office, laboratory and computer equipment. Cash provided by investing activities for the years


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ended December 31, 2021 and 2020 was due to a repayment of promissory notes of $38 thousand and $44 thousand, respectively.

Cash flows from financing activities

Cash provided by financing activities for the year ended December 2021 was $59.1 million consisting of (i) proceeds from Oxford Loan of $14.9 million (net of issuance costs), (ii) issuance of common stock of $30.0 million concurrent with closing of the merger with Millendo and (iii) cash of $17.0 million brought over by Millendo as a result of the merger, offset by payment of reverse recapitalization costs of $6.4 million. Cash provided by financing activities for the year ended December 31, 2020 was primarily related to proceeds from the issuance of Series B-1 preferred stock of $34.5 million (net of issuance costs).

Material Cash Requirements

We expect our expenses to increase in connection with our ongoing development activities, particularly as we continue the research, development and clinical trials of, and seeks regulatory approval for, our product candidates. In addition, subject to obtaining regulatory approval of any of our product candidates, we anticipate that we will need substantial additional funding in connection with our continuing operations.

Until we can generate a sufficient amount of product revenue to finance our cash requirements, we expect to finance our future cash needs primarily through the issuance of additional equity, borrowings and strategic alliances with partner companies. To the extent that we raise additional capital through the issuance of additional equity or convertible debt securities, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of existing stockholders. Debt 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 additional funds through marketing and distribution arrangements or other collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us. If we are unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce or terminate our product development or commercialization efforts or grant rights to develop and market product candidates to third parties that we would otherwise prefer to develop and market ourself.

Critical Accounting Policies and Estimates

Our Management's Discussion and Analysis of Financial Condition and Results of Operations is based on our financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles ("US GAAP"). The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses. On an ongoing basis, we evaluate these estimates and judgments. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances. These estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ materially from these estimates. We believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving management's judgments and estimates.

Research and Development Expenses

We record accrued expenses for estimated costs of our research and development activities conducted by third-party service providers, which include the conduct of preclinical studies and clinical trials and contract manufacturing activities. We record the estimated costs of research and development activities based upon the estimated amount of services provided but not yet invoiced, and we include these costs in accrued liabilities in the consolidated balance sheets and within research and development expense in the consolidated statements of operations. These costs are a significant component of our research and development expense. We record accrued expenses for these costs based on the estimated amount of work completed and in accordance with agreements established with these third parties.

We estimate the amount of work completed through discussions with internal personnel and external service providers as to the progress or stage of completion of the services and the agreed-upon fee to be paid for such services. We make significant judgments and estimates in determining the accrued balance in each reporting period, which includes gathering information from multiple sources. In certain circumstances, the determination of the nature and level of services that have been received during the reporting period requires judgment because the timing and pattern of vendor invoicing did not correspond to the level of services provided and invoicing from clinical study sites and other vendors may not yet be available to us. As actual costs become known, we adjust our accrued estimates. Although we do not expect our estimates to be materially different from


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amounts actually incurred, our understanding of the status and timing of services performed, the number of patients enrolled and the rate of patient enrollment may vary from our estimates and could result in us reporting amounts that are too high or too low in any particular period. Our accrued expenses are dependent, in part, upon the receipt of timely and accurate reporting from clinical research organizations and other third-party service providers.

Stock-Based Compensation

We recognize noncash stock-based compensation expense related to stock-based awards to employees, non-employees and directors, including stock options, based on the fair value on the grant date using the Black-Scholes option pricing model. The related stock-based compensation is recognized as expense on a straight line-basis over the employee's, non-employee's or director's requisite service period (generally the vesting period). Noncash stock compensation expense is based on awards ultimately expected to vest and is reduced by an estimate for future forfeitures.

In determining the fair value of stock options, we use the Black-Scholes option-pricing model and assumptions discussed below. Each of these inputs is subjective and generally requires significant judgment to determine.

Fair Value of Common Stock-Up until the merger, the fair value of the shares of common stock underlying stock options had historically been determined by our board of directors. Because there had been no public market for our common stock before the merger, the board of directors exercised reasonable judgment and considered a number of objective and subjective factors to determine the best estimate of the fair value of our common stock, including important developments in our operations, sales of redeemable convertible preferred stock, actual operating results and financial performance, the conditions in the life sciences industry and the economy in general, the stock price performance and volatility of comparable public companies, and the lack of liquidity of our common stock, among other factors.

Expected Term-Our expected term represents the period that the stock-based awards are expected to be outstanding and is determined using the simplified method (based on the mid-point between the vesting date and the end of the contractual term) for employee options.

Expected Volatility-The expected stock price volatility assumption was determined by examining the historical volatilities for industry peers, as we did not have any trading history for our common stock. We will continue to analyze the historical stock price volatility and expected term assumption as more historical data for our common stock becomes available.

Risk-Free Interest Rate-The risk-free interest rate is based on the U.S. Treasury zero coupon issues in effect at the time of grant for periods corresponding with the expected term of option.

Expected Dividend-We have never paid dividends on our common stock and have no plans to pay dividends on our common stock. Therefore, we use an expected dividend yield of zero.

Recent Accounting Pronouncements

See Note 2 to our Consolidated Financial Statements for a description of recent accounting pronouncements applicable to our Consolidated Financial Statements.

Smaller Reporting Company Status

We are a smaller reporting company as defined in the Securities Exchange Act of 1934, as amended. We may take advantage of certain of the scaled disclosures available to smaller reporting companies and will be able to take advantage of these scaled disclosures for so long as (i) our voting and non-voting common stock held by nonaffiliates is less than $250.0 million measured on the last business day of our second fiscal quarter or (ii) our annual revenue is less than $100.0 million during the most recently completed fiscal year and our voting and non-voting common stock held by non-affiliates is less than $700.0 million measured on the last business day of our second fiscal quarter.

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