[144] DONALDSON Co INC SEC Filing

Rhea-AI Filing Summary

Form 144 notice of proposed sale: A shareholder filed to sell up to 7,852 shares of the issuer’s common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $645,775.77. The shares are expected to be sold on or after 10/15/2025 on the NYSE.

The shares to be sold were acquired via an option exercise on 10/15/2025 for 3,000 shares (cash), and through restricted stock vesting of 1,704 shares on 09/27/2024, 1,064 on 12/01/2022, and 2,084 on 09/22/2025. Shares outstanding were 115,907,357.

In the past three months, Andrew Dahlgren sold 3,000 common shares on 08/28/2025 for $245,879.40.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	7852	645775.77	115907357	10/15/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	10/15/2025	Exercise of options under a registered plan	Issuer			3000	10/15/2025	Cash
Common	09/27/2024	Restricted stock vesting under a registered plan	Issuer			1704	09/27/2024	Services Rendered
Common	12/01/2022	Restricted stock vesting under a registered plan	Issuer			1064	12/01/2022	Services Rendered
Common	09/22/2025	Restricted stock vesting under a registered plan	Issuer			2084	09/22/2025	Services Rendered

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
ANDREW DAHLGREN 1400 West 94th Street Minneapolis MN 55431	Common	08/28/2025	3000	245879.40

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many shares are proposed for sale under Rule 144 for DCI?

The notice covers up to 7,852 common shares with an aggregate market value of $645,775.77.

When is the proposed sale date and where will the shares trade?

The approximate sale date is 10/15/2025 on the NYSE.

Which broker is handling the proposed Rule 144 sale?

The broker is Morgan Stanley Smith Barney LLC (Executive Financial Services).

How were the shares being sold acquired?

Acquisitions include an option exercise for 3,000 shares on 10/15/2025 and restricted stock vesting of 1,704 (09/27/2024), 1,064 (12/01/2022), and 2,084 (09/22/2025).

What recent sales occurred in the last three months?

Andrew Dahlgren sold 3,000 common shares on 08/28/2025 for $245,879.40.

How many shares of common stock are outstanding?

Shares outstanding were 115,907,357.