Donaldson awards Amy C. Becker 14,800 stock options

The award vests in three equal annual installments beginning October 1, 2027, with the options expiring October 1, 2036.

Rhea-AI Filing Summary

Donaldson Company, Inc. Chief Legal Officer Amy C. Becker received an award of 14,800 employee stock options on October 1, 2026, with an exercise price of $87.76 and an expiration date of October 1, 2036. The options vest in three equal annual installments beginning October 1, 2027. Her reported holdings include 50,503 common shares held directly and indirect holdings through a Benefit Plan Trust of 1,586 and 8,748 common shares.

Insider Trade Summary

Grant/Award: 14,800 shares

Grant/Award 4 txns

Insider Becker Amy C

Role Chief Legal Officer

Type	Security	Shares	Price	Value
Grant/Award	Employee Stock Option (right to buy) F1	14,800	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Employee Stock Option (right to buy) — 14,800 contracts (Direct); Common Stock — 1,586 shares (Indirect, By Benefit Plan Trust.); Common Stock — 8,748 shares (Indirect, By Benefit Plan Trust); Common Stock — 50,503 shares (Direct)

Footnotes (1)

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

Key Figures

Employee stock options awarded: 14,800 options Exercise price: $87.76 per share Option expiration: October 1, 2036 +4 more

7 metrics

Employee stock options awarded 14,800 options Awarded October 1, 2026; underlying security is Common Stock

Exercise price $87.76 per share Employee stock options awarded October 1, 2026

Option expiration October 1, 2036 Employee stock options awarded October 1, 2026

Vesting schedule 3 equal annual installments Beginning October 1, 2027

Direct Common Stock holdings 50,503 shares Reported October 1, 2026

Indirect Common Stock holdings through Benefit Plan Trust 1,586 shares Reported October 1, 2026

Indirect Common Stock holdings through Benefit Plan Trust 8,748 shares Reported October 1, 2026

Key Terms

Employee Stock Option, exercise price, vests, Benefit Plan Trust

4 terms

Employee Stock Option technical

"Employee Stock Option (right to buy)"

An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.

exercise price financial

"option award with an exercise price of $87.76"

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.

vests technical

"vests in three equal annual installments"

Benefit Plan Trust financial

"By Benefit Plan Trust"

FAQ

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

How many DCI stock options did Amy C. Becker receive?

Amy C. Becker, Donaldson Company, Inc.'s Chief Legal Officer, received 14,800 employee stock options on October 1, 2026. The options have an exercise price of $87.76 and expire October 1, 2036.

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

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Available on EDGAR 10/05/2026 - 11:35 AM Accepted by SEC EDGAR 10/05/2026 - 11:35 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^*

Becker Amy C

(Last) (First) (Middle)

1400 WEST 94TH STREET

(Street)

BLOOMINGTON MINNESOTA 55413

(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 Legal 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								1,586	I	By Benefit Plan Trust.
Common Stock								8,748	I	By Benefit Plan Trust
Common Stock								50,503	D

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		14,800		(1)	10/01/2036	Common Stock	14,800	$0	14,800	D

Explanation of Responses:

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

Remarks:

	Amy C. Becker	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)