Donaldson Co Inc (DCI) director Hilger records new stock and option grants

Rhea-AI Filing Summary

Donaldson Company director insider transactions disclosed

Director Christopher M. Hilger reported acquiring Donaldson Company common stock and stock options on January 2, 2026. He acquired 375 shares of common stock at $89.93 per share and 900 shares at $0, and held 15,342 shares directly after these transactions.

Hilger was also granted a stock option for 3,000 shares of common stock at an exercise price of $89.93 per share, expiring on January 2, 2036. The option vests in three equal annual installments beginning on January 2, 2027, and he held 3,000 derivative securities directly after the reported transaction.

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^*

Hilger Christopher M.

(Last) (First) (Middle)

PO BOX 1299

(Street)

MINNEAPOLIS MN 55440

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
DONALDSON Co INC [ DCI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

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

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

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

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	01/02/2026		A		375	A	$89.93	14,442	D
Common Stock	01/02/2026		A		900	A	$0	15,342	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
Stock Option (right to buy)	$89.93	01/02/2026		A		3,000		(1)	01/02/2036	Common Stock	3,000	$0	3,000	D

Explanation of Responses:

1. The option vests in three equal annual installments beginning on January 2, 2027.

Remarks:

	Amy C. Becker, Attorney-in-Fact for Christopher M. Hilger	01/06/2026
	** 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.

FAQ

What insider transaction did Donaldson Co Inc (DCI) report for Christopher M. Hilger?

Director Christopher M. Hilger reported acquiring Donaldson Co Inc common stock and receiving a stock option grant on January 2, 2026, as shown in a Form 4 filing.

How many Donaldson (DCI) shares did Christopher M. Hilger acquire in this Form 4?

He acquired 375 shares of common stock at $89.93 per share and 900 shares of common stock at $0, for a total of 1,275 shares reported acquired.

What stock options were granted to the Donaldson (DCI) director in this filing?

Hilger received a stock option for 3,000 shares of Donaldson common stock with an exercise price of $89.93 per share, expiring on January 2, 2036.

When do Christopher M. Hilger’s Donaldson (DCI) stock options vest?

The option vests in three equal annual installments beginning on January 2, 2027, as described in the explanation of responses.

How many Donaldson (DCI) shares does Christopher M. Hilger beneficially own after the transaction?

Following the reported transactions, Hilger directly beneficially owned 15,342 shares of Donaldson common stock and 3,000 derivative securities represented by stock options.

What is Christopher M. Hilger’s role at Donaldson Co Inc (DCI) according to this filing?

He is reported as a Director of Donaldson Co Inc in the relationship section of the Form 4.