DONALDSON Co INC

Evaluation of Disclosure Controls and Procedures

Management of the Company, with the participation of its Chief Executive Officer and the Chief Financial Officer, evaluated the effectiveness of the Company’s disclosure controls and procedures as of the end of the period. Based on their evaluation, as of the end of the period covered, the Company’s Chief Executive Officer and Chief Financial Officer concluded the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) were effective. The Company’s disclosure controls and procedures are designed so information required to be disclosed by the issuer in the reports it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s (SEC) rules and forms and such information is accumulated and communicated to management of the Company, with the participation of its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

No change in the Company’s internal control over financial reporting (as defined by Rules 13a-15(f) under the Exchange Act) occurred during the fiscal quarter ended July 31, 2026, that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

Management’s Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Management of the Company has assessed the effectiveness of the Company’s internal control over financial reporting as of July 31, 2026. In making its assessment of internal control over financial reporting, management used the criteria described in Internal Control - Integrated Framework - version 2013 issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on this evaluation, management concluded that the Company’s internal control over financial reporting was effective as of July 31, 2026 based on criteria in Internal Control - Integrated Framework issued by the COSO. The Company’s independent registered public accounting firm, PricewaterhouseCoopers LLP, has audited the effectiveness of the Company’s internal control over financial reporting as of July 31, 2026, as stated in its report, which appears herein.

Management has excluded Facet Filtration (Facet) from its assessment of internal control over financial reporting as of July 31, 2026. Facet is a wholly-owned subsidiary of the Company, which was acquired during fiscal 2026; its total assets (excluding goodwill and intangibles) and total revenues excluded from our assessment represent approximately 2.0% and 0.8%, respectively, of the related consolidated financial statements amounts as of and for the year ended July 31, 2026. This exclusion is in accordance with the guidance issued by the Staff of the SEC that an assessment of a recently acquired business’s internal controls may be omitted from management’s assessment of internal control over financial reporting for one year following the acquisition.

See Report of Independent Registered Public Accounting Firm under Item 8 of this Annual Report.