Donaldson grants president 84,200 stock options

The options vest in three equal annual installments beginning October 1, 2027, and have an exercise price of $87.76 per share.

Rhea-AI Filing Summary

Donaldson Co. (DCI) reported that President Richard Brent Lewis was granted 84,200 employee stock options on October 1, 2026, with an exercise price of $87.76 per share and an expiration date of October 1, 2036. The options vest in three equal annual installments beginning October 1, 2027. His reported common-stock holdings on that date included 50,817 shares directly and indirect Benefit Plan Trust holdings of 844 and 2,110 shares.

Insider Trade Summary

Grant/Award: 84,200 shares

Grant/Award 4 txns

Insider Lewis Richard Brent

Role President

Type	Security	Shares	Price	Value
Grant/Award	Employee Stock Option (right to buy) F1	84,200	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Employee Stock Option (right to buy) — 84,200 contracts (Direct); Common Stock — 844 shares (Indirect, By Benefit Plan Trust.); Common Stock — 2,110 shares (Indirect, By Benefit Plan Trust); Common Stock — 50,817 shares (Direct)

Footnotes (1)

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

Key Figures

Employee stock options granted: 84,200 options Exercise price: $87.76 per share Direct common-stock holdings: 50,817 shares +4 more

7 metrics

Employee stock options granted 84,200 options October 1, 2026

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

Direct common-stock holdings 50,817 shares October 1, 2026

Indirect common-stock holdings through Benefit Plan Trust 844 shares October 1, 2026

Indirect common-stock holdings through Benefit Plan Trust 2,110 shares October 1, 2026

Vesting installments 3 equal annual installments Beginning October 1, 2027

Option expiration date October 1, 2036 Options granted October 1, 2026

Key Terms

Employee Stock Option (right to buy), exercise price, equal annual installments

3 terms

Employee Stock Option (right to buy) financial

"Employee Stock Option (right to buy)"

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.

equal annual installments financial

"vests in three equal annual installments"

FAQ

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

How many options did DCI President Richard Brent Lewis receive?

President Richard Brent Lewis received 84,200 employee stock options on October 1, 2026, with an exercise price of $87.76 per share. They vest in three equal annual installments beginning October 1, 2027, and expire October 1, 2036.

What DCI common-stock holdings did President Richard Brent Lewis report?

He reported 50,817 shares directly and indirect holdings through Benefit Plan Trusts of 844 shares and 2,110 shares. These common-stock holdings were reported on October 1, 2026.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/05/2026 - 11:39 AM Accepted by SEC EDGAR 10/05/2026 - 11:38 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^*

Lewis Richard Brent

(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)
	President

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								844	I	By Benefit Plan Trust.
Common Stock								2,110	I	By Benefit Plan Trust
Common Stock								50,817	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		84,200		(1)	10/01/2036	Common Stock	84,200	$0	84,200	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 Richard B. Lewis	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)