# EDGAR Filing Document

**Accession Number:** 0002089467
**File Stem:** 0000029644-25-000102
**Filing Date:** 2025-10
**Character Count:** 5301
**Document Hash:** ad595a6776d06728cc62e2a92a295d48
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000029644-25-000102.hdr.sgml**: 20251001

**ACCESSION NUMBER**: 0000029644-25-000102

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250926

**FILED AS OF DATE**: 20251001

**DATE AS OF CHANGE**: 20251001

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Driesen Bart C.
- **CENTRAL INDEX KEY:** 0002089467

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-07891
- **FILM NUMBER:** 251362886

**MAIL ADDRESS:**
- **STREET 1:** 1400 WEST 94TH STREET
- **CITY:** BLOOMINGTON
- **STATE:** MN
- **ZIP:** 55431
**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 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Driesen Bart C.<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. Issuer Name and Ticker or Trading Symbol**<br>DONALDSON Co INC [ DCI ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-09-26 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_President_ | **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 Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common  Stock | 5161 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Employee Stock Option (right to buy) | <sup>(1)</sup> | 2027-09-22 | Common  Stock | 4000 | $45.43 | D |  |
| Employee Stock Option (right to buy) | <sup>(1)</sup> | 2028-09-21 | Common  Stock | 3000 | $59.18 | D |  |
| Employee Stock Option (right to buy) | <sup>(1)</sup> | 2029-09-26 | Common  Stock | 4000 | $51.61 | D |  |
| Employee Stock Option (right to buy) | <sup>(1)</sup> | 2030-09-24 | Common  Stock | 4000 | $46.06 | D |  |
| Employee Stock Option (right to buy) | <sup>(1)</sup> | 2031-09-23 | Common  Stock | 4000 | $59.40 | D |  |
| Employee Stock Option (right to buy) | <sup>(1)</sup> | 2032-09-22 | Common  Stock | 14500 | $50.89 | D |  |
| Employee Stock Option (right to buy) | <sup>(2)</sup> | 2033-09-21 | Common  Stock | 15900 | $59.66 | D |  |
| Employee Stock Option (right to buy) | <sup>(3)</sup> | 2034-10-01 | Common  Stock | 16800 | $73.17 | D |  |

---

### Footnotes:

(1) Fully vested

(2) The option vests in three equal annual installments beginning on September 21, 2024.

(3) The option vests in three equal annual installments beginning on October 1, 2025.

**Signature:** Amy C. Becker, Attorney-in-Fact for Bart Driesen  
**Date:** 2025-10-01

### 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.**