Donaldson grants Darcy J. DeVincke 10,400 options

The options vest in three equal annual installments beginning October 1, 2027, and expire October 1, 2036.

Rhea-AI Filing Summary

Donaldson Co Inc reported that Chief Human Resources Officer Darcy J. DeVincke received a grant of 10,400 employee stock options on October 1, 2026, with an exercise price of $87.76 per share. The options vest in three equal annual installments beginning October 1, 2027, and expire October 1, 2036. DeVincke’s reported option position after the grant was 10,400 options; separately, 3,994 common shares were held indirectly through the Benefit Plan Trust as of October 1, 2026.

Insider Trade Summary

Grant/Award: 10,400 shares

Grant/Award 2 txns

Insider DeVincke Darcy J

Role Chief Human Resources Officer

Type	Security	Shares	Price	Value
Grant/Award	Employee Stock Option (right to buy) F1	10,400	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Employee Stock Option (right to buy) — 10,400 contracts (Direct); Common Stock — 3,994 shares (Indirect, By Benefit Plan Trust)

Footnotes (1)

1. F1. The option vests in three equal annual installments beginning on October 1, 2027.

Key Figures

Options granted: 10,400 options Exercise price: $87.76 per share Reported option position after grant: 10,400 options +3 more

6 metrics

Options granted 10,400 options Grant on October 1, 2026

Exercise price $87.76 per share Options granted on October 1, 2026

Reported option position after grant 10,400 options Following the October 1, 2026 grant

Vesting installments 3 equal annual installments Beginning October 1, 2027

Option expiration date October 1, 2036 Employee stock options

Common shares held indirectly 3,994 shares Held through the Benefit Plan Trust as of October 1, 2026

Key Terms

Employee Stock Option (right to buy), vesting, exercise price, Benefit Plan Trust

4 terms

Employee Stock Option (right to buy) financial

"Employee Stock Option (right to buy)"

vesting financial

"vests in three equal annual installments"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

exercise price financial

"exercise price of $87.76 per share"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

Benefit Plan Trust financial

"By Benefit Plan Trust"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many stock options did DCI’s chief human resources officer receive?

Darcy J. DeVincke, Donaldson Co Inc’s Chief Human Resources Officer, received a grant of 10,400 employee stock options on October 1, 2026. The options have an exercise price of $87.76 per share.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/05/2026 - 11:37 AM Accepted by SEC EDGAR 10/05/2026 - 11:37 AM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

DeVincke Darcy J

(Last) (First) (Middle)

1400 WEST 94TH STREET

(Street)

BLOOMINGTON MINNESOTA 55431

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Human Resources Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock								3,994	I	By Benefit Plan Trust

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	$87.76	10/01/2026		A		10,400		(1)	10/01/2036	Common Stock	10,400	$0	10,400	D

Explanation of Responses:

1. The option vests in three equal annual installments beginning on October 1, 2027.

Remarks:

	/s/ Amy C. Becker, Attorney-in-Fact for Darcy J. DeVincke	10/05/2026
	** Signature of Reporting Person	Date
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)