Insider plans Rule 144 sale of 1,380 DCI shares

A person identified as Willard Oberton has filed a Rule 144 notice to sell 1,380 shares of common stock, with an aggregate market value of $140,526.78.

Accepted by SEC EDGAR 01/29/2026 - 04:09 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

A person identified as Willard Oberton has filed a Rule 144 notice to sell 1,380 shares of common stock, with an aggregate market value of $140,526.78. The shares are to be sold on or about 01/29/2026 through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE. These shares were acquired on 01/29/2026 by exercising stock options under a registered plan, paid in cash.

The notice also reports prior sales of the issuer’s common stock by the same seller over the past three months: 11,000 shares sold on 01/02/2026 for gross proceeds of $988,049.70, and 820 shares sold on 01/22/2026 for gross proceeds of $84,619.24. The issuer has 115,336,687 shares of this class outstanding.

FAQ

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

What does the DCI Form 144 filing by Willard Oberton disclose?

The filing discloses a planned Rule 144 sale of 1,380 common shares for an aggregate market value of $140,526.78. It also lists two earlier sales in January 2026 totaling 11,820 shares and provides basic ownership and trading plan representations.

How many DCI shares is Willard Oberton currently planning to sell under Rule 144?

Willard Oberton plans to sell 1,380 shares of common stock under Rule 144. These shares have an aggregate market value of $140,526.78 and are expected to be sold around January 29, 2026 through Morgan Stanley Smith Barney LLC on the NYSE.

What recent DCI share sales by Willard Oberton are reported in this Form 144?

The notice reports two prior sales of common stock in the past three months: 11,000 shares sold on January 2, 2026 for $988,049.70, and 820 shares sold on January 22, 2026 for $84,619.24. These transactions are aggregated with the new planned sale.

How were the 1,380 DCI shares being sold by Willard Oberton acquired?

The 1,380 shares were acquired on January 29, 2026 by exercising stock options under a registered plan. The filing states the exercise was paid in cash on the same date, and the resulting common shares are now being registered for sale under Rule 144.

What does the Form 144 say about DCI shares outstanding?

The filing states that 115,336,687 shares of the issuer’s common stock are outstanding. This figure provides context for the relative size of the planned 1,380-share sale and the earlier reported transactions disclosed for the same seller.

Which broker will handle Willard Oberton’s planned DCI share sale?

The planned sale will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services. The broker’s address is listed as 1 New York Plaza, 8th Floor, New York, NY 10004, and the shares are expected to be sold on the NYSE.

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

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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	0001036295
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	DONALDSON COMPANY, INC.
SEC File Number	001-07891
Address of Issuer	1400 West 94th Street Minneapolis MINNESOTA 55431
Phone	952-887-3131
Name of Person for Whose Account the Securities are To Be Sold	WILLARD OBERTON
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	Former Affiliate

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	1380	140526.78	115336687	01/29/2026	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	01/29/2026	Exercise of options under a registered plan	Issuer			1380	01/29/2026	Cash

* 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
WILLARD OBERTON 1400 West 94th Street Minneapolis MN 55431	Common	01/22/2026	820	84619.24
WILLARD OBERTON 1400 West 94th Street Minneapolis MN 55431	Common	01/02/2026	11000	988049.70

144: Remarks and Signature

Remarks
Date of Notice	01/29/2026
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	/s/ Willard Oberton
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)