STOCK TITAN

Donaldson insider sells 3,032 shares at $91

Donaldson Co Inc (DCI) reported insider activity by Chairman, President and CEO Tod E. Carpenter on 2026-08-31.

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Donaldson Co Inc (DCI) reported insider activity by Chairman, President and CEO Tod E. Carpenter on 2026-08-31. Carpenter exercised 3,032 employee stock options at an exercise price of $42.72 per share, receiving 3,032 shares of common stock, and then sold 3,032 shares of common stock at $91.00 per share. After the option exercise, he held 163,468 employee stock options directly, and also had indirect ownership of 11,303 and 11,978 common shares through benefit plan trusts.

Positive

  • None.

Negative

  • None.
Insider Carpenter Tod E.
Role Chairman, President and CEO
Sold 3,032 shs ($276K)
Approx. gross sale proceeds $276K
Approx. exercise cost $130K
Approx. pre-tax spread $146K
Type Security Shares Price Value
Exercise Employee Stock Option (right to buy) F1 3,032 $0.00 $0.00
Exercise Common Stock 3,032 $42.72 $130K
Sale Common Stock 3,032 $91.00 $276K
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Employee Stock Option (right to buy) — 163,468 contracts (Direct); Common Stock — 298,699 shares (Direct); Common Stock — 11,303 shares (Indirect, By Benefit Plan Trust.); Common Stock — 11,978 shares (Indirect, By Benefit Plan Trust)
Footnotes (1)
  1. F1. Fully vested
Options exercised 3,032 shares Employee stock options exercised on 2026-08-31
Option exercise price $42.72 per share Exercise price for 3,032 employee stock options
Shares sold 3,032 shares Common stock sale on 2026-08-31
Sale price $91.00 per share Price for sale of 3,032 common shares
Options held after transaction 163,468 options Employee stock options directly owned after exercise
Indirect holdings (Benefit Plan Trust) 11,303 shares Common stock held indirectly by Benefit Plan Trust
Indirect holdings (Benefit Plan Trust) 11,978 shares Additional common stock held indirectly by Benefit Plan Trust
Option expiration date 2026-12-16 Expiration date for the exercised option grant
Employee Stock Option (right to buy) financial
"security_title: Employee Stock Option (right to buy)"
derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
Benefit Plan Trust financial
"nature_of_ownership: By Benefit Plan Trust"

FAQ

What insider transaction did Tod E. Carpenter report at Donaldson Co Inc (DCI)?

Tod E. Carpenter reported exercising 3,032 stock options at $42.72 per share and selling 3,032 common shares at $91.00 per share on 2026-08-31, all in Donaldson Co Inc common stock.

How many Donaldson (DCI) stock options did Tod E. Carpenter exercise and at what price?

Tod E. Carpenter exercised 3,032 employee stock options for Donaldson (DCI) at an exercise price of $42.72 per share, fully vested, on 2026-08-31.

At what price did Tod E. Carpenter sell Donaldson (DCI) shares in this Form 4?

Tod E. Carpenter sold 3,032 shares of Donaldson (DCI) common stock at a price of $91.00 per share on 2026-08-31.

What are Tod E. Carpenter’s remaining option holdings in Donaldson (DCI) after this transaction?

Following the reported transactions, Tod E. Carpenter directly held 163,468 employee stock options for Donaldson (DCI) common stock as of 2026-08-31.

What indirect holdings in Donaldson (DCI) does Tod E. Carpenter report?

Tod E. Carpenter reports indirect ownership of 11,303 and 11,978 Donaldson (DCI) common shares, both held by Benefit Plan Trusts as of 2026-08-31.

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Carpenter Tod E.

(Last)(First)(Middle)
1400 WEST 94TH STREET

(Street)
BLOOMINGTON MINNESOTA 55431-2303

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
DONALDSON Co INC [ DCI ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chairman, President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/31/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock11,303IBy Benefit Plan Trust.
Common Stock11,978IBy Benefit Plan Trust
Common Stock08/31/2026M3,032A$42.72301,731D
Common Stock08/31/2026S3,032D$91298,699D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to buy)$42.7208/31/2026M3,032 (1)12/16/2026Common Stock3,032$0163,468D
Explanation of Responses:
1. Fully vested
Remarks:
Amy C. Becker, Attorney-in-fact for Tod E. Carpenter09/01/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)