You should read the following discussion of our financial condition and results of operations in conjunction with our unaudited Interim Financial Statements and the notes thereto included elsewhere in this Quarterly Report on Form 10-Q. This discussion and other parts of this report contains forward-looking statements that involve risks and uncertainties, such as its plans, objectives, expectations, intentions, and beliefs, as well as assumptions made by, and information currently available to, our management. Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those discussed in the section of this report entitled "Risk Factors," under Part II, Item 1A of this report and those discussed in our other disclosures and filings.

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 TREX-1 antagonist. 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, or 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 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 September 30, 2021, we have raised $148.7 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 $20.5 million and $14.9 million for the nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, we had an accumulated deficit of $92.3 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 September 30, 2021, we had cash and cash equivalents of $59.7 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


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Table of Contents 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 changed its corporate name to Tempest Therapeutics, Inc.

Financial Operations Overview

Research and Development Expense

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

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 its 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 its 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


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Table of Contents compliance with the rules and regulations of the SEC and Nasdaq, additional insurance, investor relations and other administrative expenses and professional services.

Other Income (Expense), Net

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

Results of Operations

Comparison of the three months ended September 30, 2021 and 2020

The following table summarizes our operating results for the periods indicated:



                                                 Three Months Ended September 30,
                                                        2021                      2020
                                                          (in thousands)
Expenses:
Research and development                 $          4,630                      $  4,271
General and administrative                          3,106                         1,163
Total expenses                                      7,736                         5,434
Operating loss                                     (7,736)                       (5,434)
Interest expense                                     (437)                            -
Interest income and other income, net                  63                             3
Provision for income taxes                              -                             -
Net loss                                 $         (8,110)                     $ (5,431)



Research and development

Our research and development expenses for the three months ended September 30, 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 $0.4 million to $4.6 million for
the three months ended September 30, 2021 . The following table summarizes our
research and development expenses for the three months ended September 30, 2021
and 2020:

                                                                        Three Months Ended September
                                                                                     30,
                                                                            2021              2020
                                                                               (in thousands)
Research and development outside services                               $   3,207          $ 3,008
Compensation expense                                                          617              590
Stock-based compensation expense                                              106               59
Consulting and professional services                                          418              407
Other expenses                                                                282              207
Total research and development expense                                  $   4,630          $ 4,271




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Table of Contents

The growth in total research and development expense of $0.4 million for the three months ended September 30, 2021 was attributable to increased costs for outside services, insurance and compensation expenses.

General and administrative

General and administrative expenses increased by $1.9 million to $3.1 million for the three months ended September 30, 2021 . The increase was primarily due to increased compensation expense of $0.5 million, $0.4 million in fees associated with audit and tax services in connection with the Millendo merger, insurance and rent expenses.

Other income and expense

For the three months ended September 30, 2021 , total interest expense was $437 related to the Oxford Loan. Interest income was $63 and $3 for the three months ended September 30, 2021 and 2020, respectively.

Comparison of the nine months ended September 30, 2021 and 2020

The following table summarizes our operating results for the periods indicated:



                                             Nine Months Ended
                                               September 30,
                                            2021           2020
Expenses:                                      (in thousands)
Research and development                 $  12,451      $  11,392
General and administrative                   7,197          3,583
Total expenses                              19,648         14,975
Operating loss                             (19,648)       (14,975)
Interest expense                              (944)             -
Interest income and other income, net           69             87
Provision for income taxes                       -              -
Net loss                                 $ (20,523)     $ (14,888)



Research and development

Our research and development expenses for the nine months ended September 30, 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 $1.1 million to $12.5 million for the nine months ended September 30, 2021. The following table summarizes our research and development expenses for the nine months ended September 30, 2021 and 2020:



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  Table of Contents
                                                                         Nine Months Ended September
                                                                                     30,
                                                                            2021              2020
                                                                                (in thousands)
Research and development outside services                               $   8,170          $  7,893
Compensation expense                                                        2,016             1,564
Stock-based compensation expense                                              227               290
Consulting and professional services                                        1,309               963
Other expenses                                                                729               682
Total research and development expense                                  $  12,451          $ 11,392

The growth in total research and development expense of $1.1 million for the nine months ended September 30, 2021 was attributable to increased compensation expenses and fees for consulting services.

General and administrative

General and administrative expenses increased by $3.6 million to $7.2 million for the nine months ended September 30, 2021. The increase was primarily due to an increase in compensation related expense of $1.5 million and fees associated with audit and tax services related to the Millendo merger of $0.9 million.

Other income and expense

For the nine months ended September 30, 2021, total interest expense was $944 related to the Oxford Loan. There was no interest expense for the nine months ended September 30, 2020. Interest income was $69 and $87 for the nine months ended September 30, 2021 and 2020, respectively.

Liquidity and Capital Resources

Sources of Liquidity

Since inception through September 30, 2021, our operations have been financed primarily by net cash proceeds from the sale of its common stock, convertible preferred stock and issuance of debt. As of September 30, 2021, we had $59.7 million in cash and cash equivalents and an accumulated deficit of $92.3 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.

Therefore, we will need to raise additional capital to fund our operations, which may be through the issuance of additional equity or through borrowings, including in connection with the merger, or through business development activities.

On January 15, 2021, Private Tempest entered into a loan and security agreement with a lender 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 Private Tempest 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. And 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 March 29, 2021, Private Tempest entered into the Merger Agreement with Millendo. 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, Merger Sub merged with and into Private Tempest, with Private Tempest surviving as a wholly owned subsidiary of Millendo. Following the closing of the merger, Millendo changed its corporate name to Tempest Therapeutics, Inc.



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Table of Contents 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 its common stock through the Agent.

The common stock sold in the offering will be issued pursuant to a prospectus supplement filed with the Securities and Exchange Commission (the "SEC") on July 23, 2021, and the accompanying base prospectus dated July 23, 2021, forming part of our registration statement on Form S-3 (Registration No. 333-257990), which was declared effective on July 23, 2021.

Sales of the common stock, if any, made pursuant to the Sales Agreement may be sold in negotiated transactions or transactions that are deemed to be an "at the market offering", as defined in Rule 415(a)(4) of the Securities Act of 1933, as amended (the "Securities Act"), including sales made directly on or through the Nasdaq Capital Market, on or through any other existing trading market for the common stock or by any other method permitted by law, at market prices prevailing at the time of sale, at prices related to prevailing market prices or at negotiated prices, or as otherwise agreed between us and the Agent. The Agent will be entitled to compensation equal to 3.0% of the gross proceeds from the sale of all shares of common stock sold through it as Agent under the Sales Agreement.

Cash Flows



The following table summarizes our cash flows for the nine months period
indicated:

                                                   Nine Months Ended September 30,
                                                         2021                     2020
                                                            (in thousands)
Cash used in operating activities           $        (17,972)                  $ (14,743)
Cash used in investing activities                        (70)                         (1)
Cash provided by financing activities                 59,072                      34,569
Effect of exchange rate changes on cash                  (89)                          -
Net increase in cash and cash equivalents   $         40,941                   $  19,825

Cash flows from operating activities

Cash used in operating activities for the nine months ended September 30, 2021 was $18.0 million, consisting of a net loss of $20.5 million, add back of non-cash adjustments for depreciation, stock-based compensation, non-cash operating lease expense and other non-cash items totaling $2.2 million, plus changes in operating assets and liabilities of $0.3 million.

Cash used in operating activities for the nine months ended September 30, 2020 was $14.7 million consisting of a net loss of $14.9 million, add back of non-cash adjustments for depreciation, stock-based compensation, non-cash operating lease expense and other non-cash items totaling $1.0 million, less changes in operating assets and liabilities of $0.8 million.

Cash flows from investing activities

Cash used in investing activities for the nine months ended September 30, 2021 was related to purchases of property and equipment, primarily related to office, laboratory and computer equipment. Cash provided by investing activities for the nine months ended September 30, 2021 and 2020 was due to a repayment of promissory notes of $38 and $44, respectively.

Cash flows from financing activities

Cash provided by financing activities for the nine months ended September 30, 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 nine months ended September 30, 2020 was primarily related to proceeds from the issuance of Series B-1 preferred stock of $34.5 million (net of issuance costs).



Future Funding Requirements

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Table of Contents We have not generated any revenue from product sales, and does not know when, or if, we will generate any revenue from product sales. We do not expect to generate any revenue from product sales unless and until we obtain regulatory approval of and commercializes any of our product candidates. At the same time, 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. We plan to continue to fund our operations and capital requirements through equity financing, debt financing and/or business development activities, but there are no assurances that we will be able to raise sufficient amounts of funding in the future on acceptable terms, or at all.

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 itself.

Contractual Obligations

We enter into contracts in the normal course of business with various third parties for preclinical research studies, clinical trials, testing and other services. These contracts generally provide for termination upon notice, and therefore we believe that our non-cancelable obligations under these agreements are not material.

Off-Balance Sheet Arrangements

We have not entered into any off-balance sheet arrangements and does not have any holdings in variable interest entities.

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