{"url_path":"/sec/xlo/10-q/2026/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-12","source_url":"https://www.sec.gov/Archives/edgar/data/1840233/0001193125-26-218200-index.html","accession_number":"0001193125-26-218200","cik":"0001840233","ticker":"XLO","issuer_name":"Xilio Therapeutics, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1840233/0001193125-26-218200-index.html","primary_entity_key":"0001840233","primary_entity_name":"Xilio Therapeutics, 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of Contents](#toc_page)\n\n \n\n \n\n \n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\n \n\n \n\nFORM 10-Q\n\n \n\n \n\n(Mark One)\n\n☒\n\nQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\n \n\nFor the quarterly period ended March 31, 2026\n\nor\n\n \n\n☐\n\nTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\n \n\nFor the transition period from to\n\n \n\nCommission File Number: 001-40925\n\n \n\n \n\nXilio Therapeutics, Inc.\n\n(Exact name of registrant as specified in its charter)\n\n \n\n \n\nDelaware\n\n85-1623397\n\n(State or other jurisdiction of\n\nincorporation or organization)\n\n(I.R.S. Employer\n\nIdentification Number)\n\n \n\n \n\n828 Winter Street, Suite 300\n\nWaltham, Massachusetts\n\n02451\n\n(Address of principal executive offices)\n\n(Zip Code)\n\n \n\nRegistrant’s telephone number, including area code: (857) 524-2466\n\n \n\n \n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\nTitle of each class\n\n \n\nTrading symbol(s)\n\n \n\nName of each exchange on which registered\n\nCommon stock, par value $0.0001 per share\n\n \n\nXLO\n\n \n\nNasdaq Capital Market\n\n \n\nIndicate 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 ☐\n\nIndicate 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 ☐\n\nIndicate 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.\n\n \n\nLarge accelerated filer\n\n☐\n\nAccelerated filer\n\n☐\n\n \n\n \n\n \n\n \n\nNon-accelerated filer\n\n☒\n\nSmaller reporting company\n\n☒\n\n \n\n \n\n \n\n \n\n \n\n \n\nEmerging growth company\n\n☒\n\n \n\nIf 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. ☐\n\nIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒\n\nNumber of shares of the registrant's common stock, $0.0001 par value per share, outstanding on May 8, 2026: 5,982,839\n\n \n\n \n\n[Table of Contents](#toc_page)\n\n \n\nReferences to Xilio\n\nUnless otherwise stated, all references to “us,” “our,” “we,” “Xilio,” “Xilio Therapeutics,” “the Company” and similar references in this Quarterly Report on Form 10-Q refer to Xilio Therapeutics, Inc. and its consolidated subsidiaries. Xilio Therapeutics and its associated logos are registered trademarks of Xilio Therapeutics, Inc. Other brands, names and trademarks contained in this Quarterly Report on Form 10-Q are the property of their respective owners.\n\n \n\nCautionary Note Regarding Forward-Looking Statements\n\nThis Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995 that involve substantial risks and uncertainties. All statements, other than statements of historical facts, contained in this Quarterly Report on Form 10-Q are forward-looking statements. In some cases, you can identify forward-looking statements by words such as “aim,” “anticipate,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “would,” or the negative of these words or other comparable terminology, although not all forward-looking statements contain these identifying words.\n\nThe forward-looking statements in this Quarterly Report on Form 10-Q include, but are not limited to, statements about:\n\n•\nthe initiation, timing, progress and results of our research and development programs, including preclinical studies and clinical trials;\n\n•\nour estimates regarding expenses, future revenue and capital requirements and our expectations regarding our ability to fund our operating expenses and capital expenditure requirements with our cash and cash equivalents;\n\n•\nour ability to establish and maintain collaborations and strategic partnerships and realize the expected benefits of such arrangements, including our collaboration agreement with AbbVie Group Holdings Limited, or AbbVie, and our license agreement with Gilead Sciences, Inc., or Gilead;\n\n•\nour expectations regarding milestones, option-related fees and other contingent payments under our collaboration agreement with AbbVie and our license agreement with Gilead;\n\n•\nthe potential receipt of up to $36.2 million in additional gross proceeds in the second half of 2026 if all of the Series C common stock warrants issued in connection with our June 2025 follow-on offering are exercised at their current exercise price of $10.50 per warrant;\n\n•\nour ability to secure additional capital in the future;\n\n•\nthe potential advantages and benefits of our current and future product candidates, including our beliefs regarding the potential benefits of our current and future product candidates in combination with other agents;\n\n•\nour strategic plans to research, develop and, if approved, subsequently commercialize any product candidates we may develop;\n\n•\nour ability to identify additional products, product candidates or technologies with significant potential that are consistent with our research, development and commercial objectives;\n\n•\nour manufacturing capabilities and strategy, including our reliance on third parties to manufacture our current or future product candidates;\n\n•\nour expectations regarding our ability to obtain and maintain intellectual property protection for our product candidates;\n\n•\nthe timing of and our ability to submit investigational new drug applications or biologic license applications for, and, if cleared or approved, maintain such regulatory applications or approvals for our product candidates;\n\n•\nour commercialization and marketing capabilities and strategy related to our product candidates, if approved;\n\n•\nthe rate and degree of market acceptance of our product candidates, if approved;\n\n•\nour estimates regarding the addressable patient population and potential market opportunity for our current and future product candidates;\n\n2\n\n[Table of Contents](#toc_page)\n\n \n\n•\ndevelopments relating to or impacting our competitors and our industry, including the impact of current or future government laws and regulations on us, third parties with whom we do business and our industry;\n\n•\nthe impact of current or future government laws and regulations on us or third parties with whom we do business and our industry;\n\n•\nour competitive position and expectations regarding developments and projections relating to our current or future competitors and any competing therapies that are or become available;\n\n•\nour expectations regarding the time during which we will be an emerging growth company under the Jumpstart Our Business Startups Act, or JOBS Act; and\n\n•\nthe impact of general economic conditions, including inflation and the imposition of new or revised global trade tariffs.\n\nAny forward-looking statements in this Quarterly Report on Form 10-Q reflect our current views with respect to future events or to our future financial performance and involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by these forward-looking statements. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking statements, and you should not place undue reliance on our forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements we make. We have included important factors in the cautionary statements included in this Quarterly Report on Form 10-Q, particularly those described in the “Risk Factor Summary” and “Risk Factors” section in Part II, Item 1A of this Quarterly Report on Form 10-Q, that could cause actual results or events to differ materially from the forward-looking statements that we make. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make or enter into.\n\nYou should read this Quarterly Report on Form 10-Q and the documents that we have filed as exhibits to this Quarterly Report on Form 10-Q completely and with the understanding that our actual future results, performance or achievements may be materially different from what we expect. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.\n\n3\n\n[Table of Contents](#toc_page)\n\n \n\nRisk Factor Summary\n\nOur business is subject to numerous risks that, if realized, could materially and adversely affect our business, financial condition, results of operations and future growth prospects. These risks are discussed more fully in Part II, Item 1A. “Risk Factors” in this Quarterly Report on Form 10-Q. These risks include, but are not limited to, the following:\n\n•\nWe will need to obtain substantial additional capital in the future to finance our operations and complete the development of any current or future product candidates.\n\n•\nWe have incurred significant operating losses since our inception and expect to incur significant losses for the foreseeable future.\n\n•\nOur business is highly dependent on the success of our current product candidates, which are in the early stages of development and will require significant additional preclinical and clinical development before we can seek regulatory approval for and commercially launch a product.\n\n•\nOur approach to the discovery and development of product candidates based on our technological approaches is unproven, and we do not know whether we will be able to develop any products of commercial value.\n\n•\nPreclinical development is uncertain. Our preclinical programs may experience delays or may never advance to clinical trials, which would adversely affect our ability to obtain regulatory approvals or commercialize these programs on a timely basis or at all, which would have an adverse effect on our business.\n\n•\nWe may encounter substantial delays in the commencement or completion, or termination or suspension, of our clinical trials, which could result in increased costs to us, delay or limit our ability to generate revenue and adversely affect our commercial prospects.\n\n•\nOur product candidates may cause undesirable or unexpectedly severe side effects that could delay or prevent their regulatory approval, limit the commercial profile of an approved label, or result in significant negative consequences following marketing approval, if any.\n\n•\nInterim top-line and preliminary 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 audit and verification procedures that could result in material changes in the final data.\n\n•\nWe expect to develop certain of our product candidates in combination with third-party drugs and we will have limited or no control over the safety, supply, regulatory status or regulatory approval of such drugs.\n\n•\nManufacturing biologics is complex, and we may experience manufacturing problems that result in delays in our development or commercialization programs. In addition, certain of our research and development and manufacturing activities take place in China through WuXi Biologics (Hong Kong) Limited, or WuXi Biologics. A significant disruption in our ability to rely on WuXi Biologics could materially adversely affect our business, financial condition and results of operations.\n\n•\nWe expect to rely on third parties to conduct, supervise and monitor IND-enabling studies and clinical trials, and if these third parties perform in an unsatisfactory manner, it may harm our business, reputation and results of operations.\n\n•\nWe have entered into, and may in the future seek to enter into, collaborations, licenses, or similar arrangements with third parties for the research, development and commercialization of certain of our current or future product candidates. If any such arrangements are not successful, we may not be able to capitalize on the market potential of those product candidates.\n\n•\nWe face substantial competition, which may result in others discovering, developing or commercializing products before or more successfully than we do.\n\n4\n\n[Table of Contents](#toc_page)\n\n \n\n•\nIf we are unable to obtain and maintain patent protection for any product candidates we develop or for other proprietary technologies we may develop, or if the scope of the patent protection obtained is not sufficiently broad, our competitors could develop and commercialize product candidates and technology similar or identical to our product candidates and technology, and our ability to successfully commercialize any product candidates we may develop, and our technology may be adversely affected.\n\n•\nWe rely on in-license agreements for patent rights with respect to our product candidates and may in the future acquire or in-license additional third-party intellectual property rights on which we may similarly rely. We face risks with respect to such reliance, including the risk that we could lose these rights that are important to our business if we fail to comply with our obligations under these licenses or that we may be unable to acquire or in-license third-party intellectual property that may be necessary or important to our business operations.\n\n•\nEven if we complete the necessary preclinical studies and clinical trials, the regulatory approval process is expensive, time consuming and uncertain and may prevent us from obtaining approvals for the commercialization of some or all of our product candidates. As a result, we cannot predict when or if, and in which territories, we will obtain marketing approval to commercialize a product candidate.\n\n•\nThe price of our common stock has been and, in the future, could be subject to volatility related or unrelated to our operations, and purchasers of our common stock could suffer a decline in value.\n\nAvailability of Other Information About Xilio Therapeutics, Inc.\n\nInvestors and others should note that we communicate with our investors and the public using our company website (www.xiliotx.com), including but not limited to investor presentations and scientific presentations, filings with the U.S. Securities and Exchange Commission, press releases, public conference calls and webcasts. You can also connect with us on LinkedIn. The information that we post on these channels and websites could be deemed to be material information. As a result, we encourage investors, the media and others interested in our company to review the information that we post on these channels, including our investor relations website, on a regular basis. This list of channels may be updated from time to time on our investor relations website (ir.xiliotx.com) and may include other social media channels than the ones described above. The contents of our website or these channels, or any other website that may be accessed from our website or these channels, shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended.\n\n5\n\n[Table of Contents](#toc_page)\n\n \n\nTABLE OF CONTENTS\n\n \n\n \n\nPage\n\n \n\n \n\n \n\n[Part I](#partifinancialinformation_838368)\n\n[Financial Information](#partifinancialinformation_838368)\n\n7\n\n \n\n \n\n \n\n[Item 1.](#item1financialstatements_25264)\n\n[Financial Statements (unaudited)](#item1financialstatements_25264)\n\n7\n\n \n\n[Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025](#condensedconsolidatedbalancesheets_37761)\n\n7\n\n \n\n[Condensed Consolidated Statements of Operations and Comprehensive Loss for the three months ended March 31, 2026 and 2025](#condensedconsolidatedstatementsofoperati)\n\n8\n\n \n\n[Condensed Consolidated Statements of Stockholders’ Equity for the three months ended March 31, 2026 and 2025](#condensedconsolidatedstatementsofshareho)\n\n9\n\n \n\n[Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2026 and 2025](#condensedconsolidatedstatementsofcashflo)\n\n10\n\n \n\n[Notes to Condensed Consolidated Financial Statements](#notes_to_condensed_consolidated_fin_stmt)\n\n11\n\n[Item 2.](#item2managementsdiscussionandanalysisoff)\n\n[Management’s Discussion and Analysis of Financial Condition and Results of Operations](#item2managementsdiscussionandanalysisoff)\n\n26\n\n[Item 3.](#item3quantitativeandqualitativedisclosur)\n\n[Quantitative and Qualitative Disclosures about Market Risk](#item3quantitativeandqualitativedisclosur)\n\n35\n\n[Item 4.](#item4controlsandprocedures_598930)\n\n[Controls and Procedures](#item4controlsandprocedures_598930)\n\n35\n\n \n\n \n\n \n\n[Part II](#part_ii_other_information)\n\n[Other Information](#part_ii_other_information)\n\n37\n\n \n\n \n\n \n\n[Item 1A.](#item_1a_risk_factors)\n\n[Risk Factors](#item_1a_risk_factors)\n\n37\n\n[Item 5.](#item_5_other_information)\n\n[Other Information](#item_5_other_information)\n\n100\n\n[Item 6.](#item6exhibits_567780)\n\n[Exhibits](#item6exhibits_567780)\n\n102\n\n \n\n \n\n \n\n[Signatures](#signatures_824733)\n\n \n\n103\n\n \n\n6\n\n[Table of Contents](#toc_page)\n\n \n\nPART I—FINANCIAL INFORMATION"}