FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934 For the transition period fromtoCommission File Number: 001-38990 Advantage Solutions Inc.(Exact name of registrant as specified in its charter) (314) 655-9333(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: 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 ExchangeAct of 1934 during the preceding 12 months (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 90 days. YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant toRule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was requiredto submit such files). YesNo 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 definition of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and“emerging growth company” in Rule 12b-2 of the Exchange Act. 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 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 Rule 12b-2 of the Exchange Act). YesNo As of May 5, 2026, the registrant had 13,295,280 shares of Class A common stock outstanding. Advantage Solutions Inc. TABLE OF CONTENTS PagePART I—FINANCIAL INFORMATION3Item 1. Financial Statements (Unaudited)3Condensed Consolidated Balance Sheets3Condensed Consolidated Statements of Operations and Comprehensive Loss4Condensed Consolidated Statements of Stockholders’ Equity5Condensed Consolidated Statements of Cash Flows6Notes to the Condensed Consolidated Financial Statements7Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations20Item 3. Quantitative and Qualitative Disclosures About Market Risk32Item 4. Controls and Procedures32PART II—OTHER INFORMATION33Item 1. Legal Proceedings33Item 1A. Risk Factors33Item 2. Unregistered Sales of Equity Securities and Use of Proceeds34Item 3. Defaults Upon Senior Securities34Item 4. Mine Safety Disclosures34Item 5. Other Information34Item 6. Exhibits35Signatures37 ADVANTAGE SOLUTIONS INC.CONDENSED CONSOLIDATED BALANCE SHEETS(UNAUDITED) Equity attributable to stockholders of Advantage Solutions Inc.Common stock, $0.0001par value, 197,400,000shares authorized; 13,080,791and13,058,852shares issued and outstanding as of March 31, 2026 and December 31, 2025,respectively11Additional paid in capital3,436,5663,489,020Accumulated deficit(2,941,178)(2,869,347)Loans to Karman Topco L.P.(7,834)(7,673)Accumulated other comprehensive loss(8,461)(4,158)Treasury stock, at cost; 43,548and 515,781shares as of March 31, 2026 and December 31,2025, respectively(1,066)(53,885)Total stockholders' equity478,028553,958Total liabilities and stockholders' equity$2,564,850$2,793,415 ADVANTAGE SOLUTIONS INC.CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS(UNAUDITED) ADVANTAGE SOLUTIONS INC.CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY(UNAUDITED) ADVANTAGE SOLUTIONS INC.CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(UNAUDITED) ADVANTAGE SOLUTIONS INC.NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(UNAUDITED) 1. Organization and Significant Accounting Policies Advantage Solutions Inc. (the “Company”) is a provider of outsourced solutions to consumer goods companies and retailers.The Company’s Class A common stock is listed on the Nasdaq Global Select Market under the symbol “ADV.” Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and itssubsidiaries. The unaudited condensed consolidated financial statements do not include all of the information required byaccounting principles generally accepted in the United States (“GAAP”). The condensed consolidated balance sheet at December31, 2025 was derived from the audited Consolidated Balance Sheet at that date and does not include all the disclosures required byGAAP. In the opinion of management, all adjustments which are of a normal recurring nature and necessary for a fair statement ofthe results as of March 31, 2026 and for the three months ended March 31, 2026 and 2025 have been reflected in the