☒QUARTERLYREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACT OF 1934For the quarterly period ended June 30, 2026or ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGEACT OF 1934For the transition period fromtoCommission File Number: 001-40349 DoubleVerify Holdings, Inc.(Exact name of registrant as specified in its charter) 82-2714562(I.R.S. EmployerIdentification Number) Delaware 462 BroadwayNew York, NY, 10013(Address of Principal Executive Offices) (212) 631-2111(Registrant’s telephone number) Securities registered pursuant to Section 12(b) of the Act: Title of Each ClassTrading symbolName of Exchange on which registeredCommon Stock, par value $0.001 per shareDVNew York Stock Exchange Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities ExchangeAct of 1934 during the preceding 12months (or for such shorter period that the registrant was required to file such reports), and (2)has beensubject to such filing requirements for the past 90days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant toRule405 of RegulationS-T (§232.405 of this chapter) during the preceding 12months (or for such shorter period that the registrant wasrequired 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 reportingcompany, 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. Largeacceleratedfiler☒Acceleratedfiler☐Non-accelerated filer☐Smallerreportingcompany☐Emerginggrowthcompany☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complyingwith 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 Rule12b-2 of the Exchange Act).Yes☐No☒ As of July 29, 2026, there were 154,986,847 shares of the registrant’s common stock, par value $0.001 per share, outstanding. DoubleVerify Holdings, Inc.Quarterly Report on Form 10-QFor the Quarter Ended June 30, 2026 TABLE OF CONTENTS Part IFINANCIAL INFORMATION(Unaudited) Item1.Condensed Consolidated Financial Statements5Condensed Consolidated Balance Sheets as of June 30, 2026 and December 31, 20255Condensed Consolidated Statements ofOperations and Comprehensive Income for the three andsix months endedJune 30, 2026 and 20256Condensed Consolidated Statements of Stockholders’ Equity for the three and six months endedJune 30, 2026 and 20257Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2026 and20258Notes to Condensed Consolidated Financial Statements9Item2.Management’s Discussion and Analysis of Financial Condition and Results of Operations20Item3.Quantitative and Qualitative Disclosures about Market Risk28Item4.Controls and Procedures28 Part IIOTHER INFORMATION Item1.Legal Proceedings29Item1A.Risk Factors29Item2.Unregistered Sales of Equity Securities and Use of Proceeds30Item3.Defaults Upon Senior Securities31Item4.Mine Safety Disclosures31Item5.Other Information31Item6.Exhibits32Signatures33 Table of Contents Special Note Regarding Forward-Looking Statements This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of Section 27A of the SecuritiesAct of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the“Exchange Act”). Some of the forward-looking statements can be identified by the use of forward-looking terms such as“believes,” “expects,” “may,” “will,” “shall,” “should,” “would,” “could,” “seeks,” “aims,” “projects,” “intends,” “plans,”“estimates,” “anticipates” or other comparable terms. Forward-looking statements include, without limitation, all matters thatare not historical facts. They appear in a number of places throughout this Quarterly Report on Form 10-Q and include,without limitation, statements regarding our intentions, beliefs, assumptions or current expectations concerning, among otherthings, our financial position; results of operations; industry outlook; and growth strategies or expectations. Forward-looking statements are subject to known and unknown risks and uncertainties, many of which may be beyond ourcontrol. We caution you that forward-looking statements are not guarantees of future performance or outcomes and that actualperformance and outcomes, including, without limitation, the outcome of our proposed merger with Neptune BidCo US Inc.,actual results of operations, financial condition and liquidity, and the development of the market in which we operate, maydiffe