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Tango Therapeutics, Inc.

For the period ended Jun 30, 2026. Filed Aug 11, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 11, 2026

TNGX$21.50+3.0%Stored close · as of Nov 6, 2026
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i113.ROC

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30,2026

OR

☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____________ to _____________

Commission File Number:001-39485

(Exact name of registrant as specified in its charter)

Delaware85-1195036
(State or other jurisdiction ofincorporation or organization)(I.R.S. EmployerIdentification No.)
201 Brookline Ave., Suite 901Boston, MA02215
(Address of principal executive offices)(Zip Code)

(857)320-4900

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTradingSymbol(s)Name of each exchange on which registered
Common stock, par value $0.001 per shareTNGXNasdaq Global Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer☐Accelerated filer☐
Non-accelerated filer☒Smaller reporting company☒
Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No☒

As of August 4, 2026, the registrant had 168,610,367 shares of common stock, $0.001 par value per share, outstanding.

Table of Contents

Page
PART I. · FINANCIAL INFORMATION
Item 1.Financial Statements (Unaudited)1
Condensed Consolidated Balance Sheets1
Condensed Consolidated Statements of Operations and Comprehensive Loss2
Condensed Consolidated Statements of Stockholders' Equity3
Condensed Consolidated Statements of Cash Flows4
Notes to Condensed Consolidated Financial Statements5
Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations16
Item 3.Quantitative and Qualitative Disclosures About Market Risk27
Item 4.Controls and Procedures27
PART II.OTHER INFORMATION28
Item 1.Legal Proceedings28
Item 1A.Risk Factors29
Item 2.Unregistered Sales of Equity Securities and Use of Proceeds30
Item 3.Defaults Upon Senior Securities30
Item 4.Mine Safety Disclosures30
Item 5.Other Information30
Item 6.Exhibits30
Signatures32

i

Summary of Material Risks Associated with Our Business

Our business is subject to numerous material and other risks that you should be aware of before making an investment decision with respect to our securities. These risks are described more fully in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025 and this Quarterly Report on Form 10-Q. These risks include, among others, the following (which is not an exhaustive list of all such risks):

•We are a precision oncology company with a limited operating history. We have no products approved for commercial sale, have not generated any revenue from product sales and may never become profitable. Further, we face substantial competition, which may result in others discovering, developing or commercializing products before or more successfully than we do.
•We have incurred significant net losses since our inception and anticipate that we will continue to incur losses for the foreseeable future. We expect our operating results to fluctuate significantly in the future as our business advances.
•We will need to raise substantial additional funding. If we are unable to raise capital when needed or on terms acceptable to us, we would be forced to delay, reduce or eliminate some of our product development programs or commercialization efforts. Raising additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish rights to our technologies or product candidates.
•We have never successfully completed any clinical trials and we may be unable to do so for any product candidates we develop. Certain of our programs are still in preclinical development and may never advance to clinical development.
•Our programs are focused on the development of oncology therapeutics for patients with genetically defined or biomarker-driven cancers, which is a rapidly evolving area of science, and the approach we are taking to discover and develop drugs is novel and may never lead to approved or marketable products.
•If we are unable to successfully validate, develop and obtain regulatory approval for screening tests and companion diagnostic tests for our product candidates that require or would commercially benefit from such tests, or experience significant delays in doing so, we may not realize the full commercial potential of these product candidates. We will also rely on third-parties for screening for biomarkers that enable patient selection for clinical trials and target engagement.
•Clinical product development involves a lengthy and expensive process, with an uncertain outcome. Further, our current and potential future collaborations may not realize the anticipated benefits.
•Initial, interim and top-line data from our clinical trials that we announce or publish from time to time may change as more patient data become available and are subject to confirmation, audit and verification procedures that could result in material changes in the final data.
•Results from earlier preclinical studies of our programs and product candidates are not necessarily predictive of the results of later preclinical studies and clinical trials of our programs and product candidates. If we cannot replicate the results from our earlier preclinical studies of our programs and product candidates in our later preclinical studies and clinical trials, we may be unable to successfully develop, obtain regulatory approval for and commercialize our product candidates.
•If we experience delays or difficulties in the initiation, enrollment or dosing of patients in clinical trials, the announcement of clinical trial results and our receipt of necessary regulatory approvals (if any) could be delayed or prevented.
•Our clinical trials or those of our current or future collaborators may reveal significant adverse events not seen in our preclinical or nonclinical studies and may result in a safety profile that could inhibit regulatory approval or market acceptance of any of our product candidates.
•Some of our product candidates modulate pathways for which there are currently no approved or effective therapies, and utilize novel binding locations, which may result in greater research and development expenses, regulatory issues that could delay or prevent approval, or discovery of unknown or unanticipated adverse effects.

ii

•If we are not able to obtain, or if there are delays in obtaining, required regulatory approvals for our product candidates, we will not be able to commercialize, or will be delayed in commercializing, our product candidates, and our ability to generate revenue will be materially impaired.
•Public health crises may materially and adversely affect our business and our financial results and could cause a disruption to the development of our product candidates and the initiation and completion of clinical trials.
•We currently rely and expect to continue to rely on third parties to conduct our clinical trials, as well as investigator-sponsored clinical trials of our product candidates (if any). If these third parties do not successfully carry out their contractual duties, comply with regulatory requirements or meet expected deadlines, we may not be able to obtain regulatory approval for or commercialize our product candidates and our business could be substantially harmed.
•We contract with a limited number of third parties for the manufacture of our product candidates for preclinical development and clinical trials and expect to continue to do so for future clinical testing and commercialization (if approved). This reliance on third parties increases the risk that we will not have sufficient quantities of our product candidates or products or such quantities at an acceptable cost, which could delay, prevent or impair our development or commercialization efforts.
•We rely on a very limited number of third parties for the supply of API, and drug product to be used in our product candidates (for example, an affiliate of WuXi AppTec is the sole source of API for all of our clinical-stage product candidates), and WuXi AppTec has been the subject of proposed Congressional legislation that, if enacted, could materially restrict our ability to conduct business with, and obtain API from, WuXi AppTec. The loss of any of these suppliers, including WuXi AppTec, could significantly harm our business.
•If we cannot obtain new patents, maintain our existing patents and protect the confidentiality and proprietary nature of our trade secrets and other intellectual property, our business and competitive position may be harmed.
•If we are found to be infringing third party patents, we may be forced to pay damages to the patent owner and/or obtain a license to continue the manufacture, sale or development of our products. If we cannot obtain a license, we may be prevented from the manufacture, sale or development of our products or product candidates, which may adversely affect our business.
•Development of combination therapies may present more or different challenges than development of single agent therapies.
•Inadequate funding for government agencies in or outside the United States, including from government shutdowns or other disruptions to these agencies' staffing and operations, could prevent new products and services being developed or commercialized in a timely manner or otherwise prevent those agencies from performing normal business functions on which the operation of our business may rely, which could negatively impact our business. Unfavorable global economic conditions could adversely affect our business, financial condition or results of operations.

Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains express or implied forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Exchange Act. Words such as "anticipates," "continue," "could," "may," "forecasts," "expects," "intends," "plans," "potentially," "believes," "seeks," "estimates," "predict," "target," and variations of such words and similar expressions are intended to identify such forward-looking statements, although not all forward-looking statements contain these identifying words. Forward-looking statements are not guarantees of future performance and are subject to certain risks, uncertainties, and assumptions that are difficult to predict; therefore, actual results may differ materially from those expressed or forecasted in any such statements. Such forward-looking statements are based on current expectations, estimates and projections about our industry and business, management's beliefs, and certain assumptions made by our management, and may include, but are not limited to, statements regarding:

•the timing of upcoming clinical milestones and data disclosures, including our plans to: (a) disclose clinical data in the lung cancer cohort of the vopimetostat monotherapy clinical trial in 2026, (b) disclose initial safety and efficacy data from the TNG456 Phase 1/2 clinical trial in 2026 and (c) initiate a Phase 1/2 combination clinical trial of vopimetostat and ERAS-0015 in the second half of 2026;

iii

•our ability to discover and develop product candidates efficiently (including the advancement of development candidates on the timelines identified and the ability to identify and contract with clinical trial sites and investigators to use our product candidates in trials);
•our ability and potential (or those of third parties) to manufacture our drug product, drug substance and product candidates successfully for preclinical use, for clinical trials and on a larger scale for commercial use, if approved;
•the ability and willingness of our third-party strategic collaborators to continue research and development activities relating to our development candidates and product candidates;
•our ability to obtain funding for our operations necessary to complete further research, development and commercialization (if approved) of our product candidates (and that existing cash, cash equivalents and marketable securities will enable us to meet our current operating plan and fund our operating expenses and capital expenditure requirements for at least the next 12 months);
•our ability to obtain and, if approved, maintain regulatory approval of our product candidates (as well as approval or clearance of screening tests and companion diagnostic tests for our product candidates) and the potential paths to approval for our product candidates, including for vopimetostat as a monotherapy or in combination in MTAP-deleted pancreatic and lung cancer, including our plans to continue working internally and with regulators and our collaborator Revolution Medicines toward the goal of developing a registrational plan and path forward for vopimetostat plus daraxonrasib in MTAP-deleted pancreatic cancer;
•our ability to commercialize our products, if approved;
•the pricing and reimbursement of our product candidates, if approved;
•the implementation of our business model, and strategic plans for our business and product candidates;
•the scope of protection we are able to establish and maintain for intellectual property rights covering our product candidates and our ability to enforce our intellectual property rights;
•estimates of our future expenses, capital requirements, and our need for additional financing;
•the potential benefits of strategic collaboration agreements (including our clinical trial and supply agreements with Revolution Medicines and Erasca), our ability to enter into strategic collaborations or arrangements, and our ability to attract collaborators with development, regulatory and commercialization expertise;
•future agreements with third parties (i) in connection with clinical trials; (ii) to successfully manufacture our drug substances for preclinical use, for clinical trials and on a larger scale for commercial use, if approved; and (iii) in connection with the commercialization of our product candidates (if approved) and any other approved products;
•the size and growth potential of the markets for our product candidates, and our ability to serve those markets;
•our financial performance, including the expectation that we will continue to incur operating losses and negative cash flow;
•the rate and degree of market acceptance of our product candidates, if approved;
•regulatory developments in the United States and foreign countries, including product approval requirements and pricing regulations by U.S. regulatory authorities (such as the Centers for Medicare & Medicaid Services) and foreign regulatory authorities; and the outcome of discussions with such regulatory authorities regarding our clinical trial design;
•our ability to contract with third-party suppliers and manufacturers and their ability to perform adequately;
•our ability (or the ability of third parties with whom we contract) to produce our products or product candidates with advantages in turnaround times or manufacturing cost;

iv

•our ability to deliver the deep, durable target inhibition — with favorable tolerability and safety profiles — necessary to maximize clinical benefit as a result of the unique ability of synthetic lethal targeting to spare normal cells, as well as the success of competing therapies that may become available;
•our ability to attract and retain key scientific or management personnel;
•the impact of laws and regulations;
• •developments relating to our competitors and industry; the impact of trade restrictions (such as sanctions or tariffs); regulatory requirements, legal actions, or enforcement; volatility in inflation or interest rates; and inadequate funding for government agencies on our business, financial condition, and results of operations;
•the effect of public health crises on our business operations, including but not limited to our preclinical studies and clinical trials and any future studies or trials;
•the expected benefit of our drugs in patients as single agents and/or in combination;
•the potential of preclinical and initial clinical data to support clinical trial results, including (i) our belief that robust preclinical data and initial clinical data for vopimetostat and RAS(ON) inhibitors support a potentially strong combination effect in clinical trials of vopimetostat in combination with RAS inhibitors and (ii) our belief that strong preclinical data and initial clinical data showing significant in vivo combination benefit could support potential clinical combinations of our PRMT5 inhibitors with CDK4/6 or MAT2A inhibitors, as well as other oncogene-targeted therapies;
•the potential benefits and development paths of our drugs as monotherapies and in combination with RAS inhibitors; and
•other risks and uncertainties, including those identified in Part II, Item 1A of this Quarterly Report on Form 10-Q and in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025. In both cases, see section titled “Risk Factors.”

The forward-looking statements contained in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025 and Part II, Item 1A of this Quarterly Report on Form 10-Q are based on current expectations and beliefs concerning future developments and their potential effects on us. There can be no assurance that future developments affecting us will be those that we have anticipated. These forward-looking statements involve a number of risks, uncertainties (some of which are beyond our control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. These risks and uncertainties include, but are not limited to, those factors described under the heading “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2025. Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements. There may be additional risks that we currently consider immaterial or which are unknown. It is not possible to predict or identify all such risks. We do not undertake any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.

USE OF DEFINED TERMS IN THIS QUARTERLY REPORT ON FORM 10-Q

Unless the context otherwise requires in this Quarterly Report on Form 10-Q for the quarter ended June 30, 2026, we use the following defined terms:

i.

“the Company”, “Tango”, “we”, “our” and “us” mean Tango Therapeutics, Inc. and its wholly-owned subsidiaries;

ii.

“1260H” means Section 1260H of the National Defense Authorization Act for Fiscal Year 2021;

iii.

“2017 Plan” means the 2017 Stock Option and Grant Plan, as amended;

iv.

“2018 Gilead Agreement” means our Research Collaboration and License Agreement with Gilead, dated October 22, 2018, which was superseded by the Gilead Agreement;

v.

“2021 ESPP” means the 2021 Employee Stock Purchase Plan;

v vi.

“2021 Plan” means the 2021 Option and Incentive Plan;

vii.

“API” means active pharmaceutical ingredients;

viii.

“ASC” means Accounting Standards Codification;

ix.

“ASU” means Accounting Standards Update;

x.

“BCTG” means BCTG Acquisition Corp.;

xi.

“BIOSECURE Act” means Section 851 of the National Defense Authorization Act for Fiscal Year 2026;

xii.

“Business Combination” means the merger of BCTG Merger Sub Inc. with and into Tango Therapeutics, Inc. (now known as Tango Therapeutics Sub, Inc.) on August 10, 2021, with Tango Therapeutics, Inc. as the surviving company in the merger as a wholly-owned subsidiary of BCTG (now known as Tango Therapeutics, Inc.);

xiii.

“CDMO” means Contract Development and Manufacturing Organizations;

xiv.

“Certificate of Incorporation” means our Second Amended and Restated Certificate of Incorporation, as amended;

xv.

“CNS” means central nervous system;

xvi.

“CODM” means chief operating decision maker;

xvii.

“CoREST” means Co-repressor of Repressor Element-1 Silencing Transcription;

xviii.

“CTCSA” means Clinical Trial Collaboration and Supply Agreement;

xix.

“DCR” means disease control rate;

xx.

“DLTs” means dose-limiting toxicities;

xxi.

“Erasca” means Erasca, Inc.;

xxii.

“Exchange Act” means the Securities Exchange Act of 1934, as amended;

xxiii.

“FASB” means the Financial Accounting Standards Board;

xxiv.

“FOCAD” means focadhesin;

xxv.

“Gilead” means Gilead Sciences, Inc.;

xxvi.

“Gilead Agreement” means our Amended and Restated Research Collaboration and License Agreement with Gilead, dated August 17, 2020;

xxvii.

“GBM” means glioblastoma;

xxviii.

“Inducement Plan” means the 2023 Inducement Plan;

xxix.

“IND” means Investigational New Drug Application;

xxx.

“Leerink Partners” means Leerink Partners LLC;

xxxi.

“Leerink Sales Agreement” means our Sales Agreement with Leerink Partners, dated November 21, 2025;

xxxii.

“MTAP” means methylthioadenosine phosphorylase;

xxxiii.

“NSCLC” means non-small cell lung cancer;

xxxiv.

“OBBBA” means the One Big Beautiful Bill Act;

xxxv.

“OMB” means the Office of Management and Budget;

xxxvi.

“ORR” means objective response rate;

xxxvii.

“PDAC” means pancreatic ductal adenocarcinoma;

xxxviii.

“PRMT5” means protein arginine methyltransferase 5;

xxxix.

“QD” means once daily;

xl.

“Quarterly Report” or “Quarterly Report on Form 10-Q” means this Quarterly Report on Form 10-Q for the quarter ended June 30, 2026;

xli.

“RAS” means rat sarcoma;

vi xlii.

“Revolution Medicines” means Revolution Medicines, Inc.;

xliii.

“RSUs” means restricted stock units;

xliv.

“SEC” means the U.S. Securities and Exchange Commission;

xlv.

“Sesame” means Sesame Therapeutics, Inc.;

xlvi.

“Sesame Agreement” means a license agreement pursuant to which we granted a non-exclusive license to certain know-how associated with preclinical research granted to Sesame;

xlvii.

“U.S. GAAP” means accounting principles generally accepted in the United States of America; and

xlviii.

“WuXi AppTec” means WuXi AppTec Co., Ltd.

Corporate Information

We were formerly known as BCTG and were incorporated in Delaware in May 2020 as a special purpose acquisition company, formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or other similar business combination. On August 10, 2021, we consummated the merger pursuant to the Agreement and Plan of Merger, dated as of April 13, 2021, by and among BCTG, BCTG Merger Sub Inc. and Tango Therapeutics Sub, Inc. Upon the consummation of the merger, we changed our name to Tango Therapeutics, Inc.

Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, including exhibits, proxy and information statements and amendments to those reports filed or furnished pursuant to Sections 13(a), 14, and 15(d) of the Exchange Act are available through the “Investors” portion of our website free of charge as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. We also make available, free of charge on our website, the reports filed with the SEC by our executive officers, directors and 10% stockholders pursuant to Section 16 under the Exchange Act as soon as reasonably practicable after copies of those filings are provided to us by those persons. Accordingly, investors should monitor such portions of our website, in addition to following our press releases, SEC filings and public conference calls and webcasts (if any). Information on our website is not to be deemed to be incorporated by reference in, and is not part of, this Quarterly Report on Form 10-Q or any of our other securities filings, unless specifically incorporated herein by reference, and should not be relied upon in making a decision as to whether or not to purchase our common stock. Our filings with the SEC may be accessed through the SEC’s Interactive Data Electronic Applications system at http://www.sec.gov. All statements made in any of our securities filings, including all forward-looking statements or information, are made as of the date of the document in which the statement is included, and we do not assume or undertake any obligation to update any of those statements or documents unless we are required to do so by law.

Further, we intend to use our website at http://www.tangotx.com as a means of disclosing material non-public information and for complying with its disclosure obligations under the SEC Regulation FD. Such disclosures will be included on our website under the heading “Investors.” Accordingly, investors should monitor such portions of our website, in addition to following our press releases, SEC filings and public conference calls and webcasts (if any). The information contained on, or that may be accessed through, the website is not part of, and is not incorporated into, this Quarterly Report on Form 10-Q.

Our principal executive office is located at 201 Brookline Avenue, Suite 901, Boston, Massachusetts 02215.

vii

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