Richard B. Lewis - 01 Oct 2025 Form 4 Insider Report for DONALDSON Co INC (DCI)

Role
President
Signature
/s/ Amy C. Becker, Attorney-in-fact for Richard B. Lewis
Issuer symbol
DCI
Transactions as of
01 Oct 2025
Net transactions value
-$359,243
Form type
4
Filing time
03 Oct 2025, 12:01:02 UTC
Previous filing
29 Sep 2025
Next filing
04 Mar 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lewis Richard Brent President 1400 WEST 94TH STREET, BLOOMINGTON /s/ Amy C. Becker, Attorney-in-fact for Richard B. Lewis 03 Oct 2025 0001718260

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DCI Common Stock Options Exercise $378,000 +13,500 +34% $28.00 53,279 02 Oct 2025 Direct
transaction DCI Common Stock Tax liability $737,243 -8,982 -17% $82.08 44,297 02 Oct 2025 Direct
holding DCI Common Stock 832 01 Oct 2025 By Benefit Plan Trust.
holding DCI Common Stock 3,866 01 Oct 2025 By Benefit Plan Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DCI Employee Stock Option (right to buy) Award $0 +42,100 $0.000000 42,100 01 Oct 2025 Common Stock 42,100 $82.08 Direct F1
transaction DCI Employee Stock Option (right to buy) Options Exercise $0 -13,500 -100% $0.000000 0 02 Oct 2025 Common Stock 13,500 $28.00 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option vests in three equal annual installments beginning on October 1, 2026.
F2 Fully vested