DONALDSON CONSTRUCTION

ed upon the terms of the Plan document. At December 31, 2025 and 2024, there were no allowances for credit losses recorded. Contributions Participant contributions and any related employer matching contributions are recognized in the period during which the Company makes the respective payroll deduction from the participant’s compensation. Annual employer contributions are recorded in the Plan in the year in which compensation was earned. Benefits Paid to Participants Benefits paid to participants are recorded when paid. Plan Expenses Administrative fees charged by the Trustee are paid by the Plan. These fees are partially offset by revenue sharing credits received from the Trustee as well as forfeitures. Certain expenses, including legal, accounting and other services, are paid by the Com

d by the Plan receive an additional annual retirement contribution 3 % of participant’s compensation After Plan year-end 100 % in the participant's directed investment elections 3 years of vesting service 9,378,842 Total employer contributions $ 22,236,415 Participant Accounts Participants direct the investment of their contributions into various investment options offered by the Plan. If a participant does not allocate their contributions, the contributions are placed in the age appropriate State Street Target Retirement Fund. The participant may directly invest up to 15 % of their contributions in the Company’s Common Stock Fund. Employer contributions invested directly in the Company’s Common Stock Fund may be transferred by participants to one or more of the other investment options av

er qualified retirement plans . Participants over age 50 may contribute an additional catch-up contribution. Employees who are not covered by a collective bargaining agreement are automatically enrolled at a 3 % pre-tax 401(k) employee contribution 45 days after they become eligible unless they proactively opt out of the Plan or choose a different percentage amount for their contribution. As of January 1, 2024, all employees covered by a collective bargaining agreement are automatically enrolled under the same terms. Information about employer contributions made to eligible participants is as follows: Participant Group Employer Contribution Contribution Paid Investment Allocation Vesting Employer Contributions For the Year Ended December 31, 2025 All eligible participants as defined by the

ns: Employer 22,236,415 Participants 29,079,168 Rollovers 3,783,598 Total contributions 55,099,181 Total additions 223,444,944 Deductions Benefits paid to participants 107,247,542 Administrative expenses 503,790 Total deductions 107,751,332 Net increase in net assets available for benefits 115,693,612 Net assets available for benefits, beginning of year 827,000,720 Net assets available for benefits, end of year $ 942,694,332 See Notes to Financial Statements. 3 DONALDSON COMPANY, INC. RETIREMENT SAVINGS AND EMPLOYEE STOCK OWNERSHIP PLAN NOTES TO FINANCIAL STATEMENTS AS OF DECEMBER 31, 2025 AND 2024 AND FOR THE YEAR ENDED DECEMBER 31, 2025 Note 1. Description of the Plan The Donaldson Company, Inc. Retirement Savings and Employee Stock Ownership Plan (the Plan) is a defined contribution pla