# EDGAR Filing Document

**Accession Number:** 0001443909
**File Stem:** 0000029644-26-000040
**Filing Date:** 2026-4
**Character Count:** 6642
**Document Hash:** 48ba339ea02afc796cb3c5592ae1ad15
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000029644-26-000040.hdr.sgml**: 20260414

**ACCESSION NUMBER**: 0000029644-26-000040

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260410

**FILED AS OF DATE**: 20260414

**DATE AS OF CHANGE**: 20260414

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Owens James
- **CENTRAL INDEX KEY:** 0001443909

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-07891
- **FILM NUMBER:** 26861207

**MAIL ADDRESS:**
- **STREET 1:** P.O. BOX 1299
- **CITY:** MINNEAPOLIS
- **STATE:** MN
- **ZIP:** 55440
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DONALDSON Co INC
- **CENTRAL INDEX KEY:** 0000029644
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFYING EQUIP [3564]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 410222640
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0731

**BUSINESS ADDRESS:**
- **STREET 1:** 1400 W. 94TH ST.
- **CITY:** BLOOMINGTON
- **STATE:** MN
- **ZIP:** 55431
- **BUSINESS PHONE:** 6128873131

**MAIL ADDRESS:**
- **STREET 1:** 1400 W 94TH STREET
- **CITY:** BLOOMINGTON
- **STATE:** MN
- **ZIP:** 55431

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DONALDSON CO INC
- **DATE OF NAME CHANGE:** 19920703

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Owens James<br><sub>(Last) (First) (Middle)</sub><br>1400 WEST 94TH STREET<br><sub>(Street)</sub><br>BLOOMINGTON, MN 55431<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-04-10 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>DONALDSON Co INC [ DCI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-04-10 |  | M |  | 126 | A | $42.26 | 22691 | D |  |
| Common Stock | 2026-04-10 |  | S |  | 126 | D | $88.82 | 22565 | D |  |
| Common Stock | 2026-04-13 |  | M |  | 5921 | A | $42.26 | 28486 | D |  |
| Common Stock | 2026-04-13 |  | S |  | 5921 | D | $89.02 | 22565 | D |  |
| Common Stock | 2026-04-14 |  | M |  | 7153 | A | $42.26 | 29718 | D |  |
| Common Stock | 2026-04-14 |  | S |  | 7153 | D | $89.21 | 22565 | D |  |
| Common Stock | 2026-04-14 |  | M |  | 6600 | A | $48.96 | 29165 | D |  |
| Common Stock | 2026-04-14 |  | S |  | 6600 | D | $89.21 | 22565 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Stock Option (right to buy) | $42.26 | 2026-04-10 |  | M |  |  | 126 | <sup>(1)</sup> | 2027-01-03 | Common  Stock | 126 | $0 | 13074 | D |  |
| Stock Option (right to buy) | $42.26 | 2026-04-13 |  | M |  |  | 5921 | <sup>(1)</sup> | 2027-01-03 | Common  Stock | 5921 | $0 | 7153 | D |  |
| Stock Option (right to buy) | $42.26 | 2026-04-14 |  | M |  |  | 7153 | <sup>(1)</sup> | 2027-01-03 | Common  Stock | 7153 | $0 | 0 | D |  |
| Stock Option (right to buy) | $48.96 | 2026-04-14 |  | M |  |  | 6600 | <sup>(1)</sup> | 2028-01-02 | Common  Stock | 6600 | $0 | 0 | D |  |

---

### Footnotes:

(1) Fully vested

**Signature:** Amy C. Becker, Attorney-in-fact for James J. Owens  
**Date:** 2026-04-14

### Remarks:

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.**