Donaldson President Richard Brent Lewis Granted 6,340 Shares

The reported entries include an award and a separate delivery or withholding of shares, alongside two indirect Benefit Plan Trust holdings.

Rhea-AI Filing Summary

Donaldson Company, Inc. (DCI) President Richard Brent Lewis received a grant of 6,340 common shares on September 24, 2026, at $0 per share. On the same date, 149 shares were delivered or withheld for payment of exercise price or tax liability, reported at $86.60 per share. The reported holdings also include indirect common stock held through Benefit Plan Trusts: 844 shares and 2,110 shares, each dated September 24, 2026.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Lewis Richard Brent

Role President

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6,340	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	149	$86.60	$13K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 50,817 shares (Direct); Common Stock — 844 shares (Indirect, By Benefit Plan Trust.); Common Stock — 2,110 shares (Indirect, By Benefit Plan Trust)

Key Figures

Common shares granted: 6,340 shares Grant price per share: $0 per share Shares delivered or withheld for payment of exercise price or tax liability: 149 shares +3 more

6 metrics

Common shares granted 6,340 shares September 24, 2026

Grant price per share $0 per share September 24, 2026

Shares delivered or withheld for payment of exercise price or tax liability 149 shares September 24, 2026

Reported price per share for shares delivered or withheld $86.60 per share September 24, 2026

Indirect Benefit Plan Trust common-stock holding 844 shares September 24, 2026

Indirect Benefit Plan Trust common-stock holding 2,110 shares September 24, 2026

Key Terms

grant or award, exercise price or tax liability, Benefit Plan Trust

3 terms

grant or award financial

"Grant, award, or other acquisition"

exercise price or tax liability financial

"payment of exercise price or tax liability"

Benefit Plan Trust financial

"By Benefit Plan Trust"

FAQ

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

How many DCI shares did Richard Brent Lewis receive?

Richard Brent Lewis received a 6,340-share common-stock grant on September 24, 2026, at $0 per share.

What DCI shares were delivered or withheld?

On September 24, 2026, 149 common shares were delivered or withheld for payment of exercise price or tax liability, reported at $86.60 per share.

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

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Available on EDGAR 09/28/2026 - 02:26 PM Accepted by SEC EDGAR 09/28/2026 - 02:24 PM 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)
09/24/2026

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	09/24/2026		A		6,340	A	$0	50,966	D
Common Stock	09/24/2026		F		149	D	$86.6	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

Explanation of Responses:

Remarks:

	/s/ Amy C. Becker, Attorney-in-fact for Richard B. Lewis	09/28/2026
	** 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)