Advantage Solutions Inc.

Our management, with the participation of our chief executive officer and chief financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Quarterly Report. Based on this evaluation, our chief executive officer and chief financial officer concluded that, as of June 30, 2026, our disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed by us in reports we file or submit under the Exchange Act is (1) recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms, and (2) accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure.

In designing and evaluating our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints, and that management is required to apply judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Changes in Internal Control Over Financial Reporting

During the quarter ended June 30, 2026, the Company continued enhancements related to the phased implementation of its global enterprise resource planning (“ERP”) system. These activities primarily related to ongoing configuration, integration, and preparatory work in advance of future phases of deployment. The initial deployment was completed in fiscal year 2025, with additional phases completed in the second quarter of 2026. Enhancements to support more complex transaction flows and reporting requirements are expected to continue during fiscal year 2026.

The Company evaluated the impact of these activities as part of its ongoing assessment of internal control over financial reporting and will continue to monitor the design and operating effectiveness of relevant controls as additional phases of the ERP system are implemented. Except for the foregoing, there were no changes in the Company’s internal control over financial reporting during the quarter that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.