# EDGAR Filing Document

**Accession Number:** 0000098362
**File Stem:** 0000098362-25-000120
**Filing Date:** 2025-8
**Character Count:** 6033
**Document Hash:** 2e78170712214de2503a75afa15c0e66
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000098362-25-000120.hdr.sgml**: 20250825

**ACCESSION NUMBER**: 0000098362-25-000120

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250814

**FILED AS OF DATE**: 20250825

**DATE AS OF CHANGE**: 20250825

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Discenza Michael Anthony
- **CENTRAL INDEX KEY:** 0002083037

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-01169
- **FILM NUMBER:** 251248850

**MAIL ADDRESS:**
- **STREET 1:** 4500 MOUNT PLEASANT ST. NW
- **CITY:** NORTH CANTON
- **STATE:** OH
- **ZIP:** 44720
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TIMKEN CO
- **CENTRAL INDEX KEY:** 0000098362
- **STANDARD INDUSTRIAL CLASSIFICATION:** BALL & ROLLER BEARINGS [3562]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 340577130
- **STATE OF INCORPORATION:** OH
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 4500 MT. PLEASANT ST. NW
- **CITY:** NORTH CANTON
- **STATE:** OH
- **ZIP:** 44720-5450
- **BUSINESS PHONE:** (234) 262-3000

**MAIL ADDRESS:**
- **STREET 1:** 4500 MT. PLEASANT ST. NW
- **CITY:** NORTH CANTON
- **STATE:** OH
- **ZIP:** 44720-5450

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TIMKEN ROLLER BEARING CO
- **DATE OF NAME CHANGE:** 19710304

### 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>Discenza Michael Anthony<br><sub>(Last) (First) (Middle)</sub><br>4500 MOUNT PLEASANT ST. NW<br><sub>(Street)</sub><br>NORTH CANTON, OH 44720<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>TIMKEN CO [ TKR ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-08-14 | **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>_VP, Chief Financial Officer_ | **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 | 15748 | 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) | 2019-02-12 | 2028-02-12 | Common  Stock | 1825 | $44.65 | D |  |
| Employee Stock Option (right to buy) | 2020-02-12 | 2029-02-12 | Common  Stock | 6075 | $42.60 | D |  |
| Restricted Share Unit | <sup>(1)</sup> | 2025-12-31 | Common  Stock | 1600 | $0 | D |  |
| Restricted Share Unit | <sup>(2)</sup> | 2026-12-31 | Common  Stock | 1875 | $0 | D |  |
| Restricted Share Unit | <sup>(3)</sup> | 2027-12-31 | Common  Stock | 2375 | $0 | D |  |
| Restricted Share Unit | 2023-02-10<sup>(4)</sup> | 2026-02-10 | Common  Stock | 319 | $0 | D |  |
| Restricted Share Unit | 2024-02-09<sup>(5)</sup> | 2027-02-09 | Common  Stock | 538 | $0 | D |  |
| Restricted Share Unit | 2025-02-08<sup>(6)</sup> | 2028-02-08 | Common  Stock | 938 | $0 | D |  |
| Restricted Share Unit | 2026-02-13<sup>(7)</sup> | 2029-02-13 | Common  Stock | 1600 | $0 | D |  |

---

### Footnotes:

(1) Performance based restricted share units subject to certain performance criteria between January 1, 2023 and December 31, 2025.

(2) Performance based restricted share units subject to certain performance criteria between January 1, 2024 and December 31, 2026.

(3) Performance based restricted share units subject to certain performance criteria between January 1, 2025 and December 31, 2027.

(4) Remaining restricted share units from February 10, 2022 grant of time based restricted share units that vest 25% per year.

(5) Remaining restricted share units from February 9, 2023 grant of time based restricted share units that vest 25% per year.

(6) Remaining restricted share units from February 8, 2024 grant of time based restricted share units that vest 25% per year.

(7) Remaining restricted share units from February 13, 2025 grant of time based restricted share units that vest 25% per year.

**Signature:** /s/ Michael Anthony Discenza  
**Date:** 2025-08-25

### 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.**