Stephen P. Ribaudo was named Chief Operating Officer of Timken Co, effective September 1, 2026. As of November 6, 2026, Timken Co has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from April 21, 2026 to July 31, 2026, naming 1 appointment and 1 departure (Form 8-K, July 31, 2026).
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Timken Co reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-04-21 to 2026-07-31. They name 2 people, with 1 appointment and 1 departure. Every row below is cited to the filing it comes from, and this page adds each new change as Timken Co files it.
Also on the record for Timken Co
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 30, 2026 | Stake report, Schedule 13G, by Vanguard Portfolio Management | 5.08% of the class | 5%+ stakes | Source |
| March 27, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | — | 5%+ stakes | Source |
| February 13, 2026 | Stake report, Schedule 13G/A, by American Century Investment Management, Inc. | 4.3% of the class | 5%+ stakes | Source |
| February 5, 2026 | Stake report, Schedule 13G/A, by FMR LLC | 4% of the class | 5%+ stakes | Source |
| August 6, 2025 | Stake report, Schedule 13G/A, by FMR LLC | 5.1% of the class | 5%+ stakes | Source |
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More on Timken Co and the records around it.
Timken Co elsewhere on the record
Companies that share a holder
- American Century Investment Management, Inc. also filed stake reports on 83 other companies: Visteon Corporation (Oct 2026), MarineMax, Inc. (Sep 2026), AdvanSix Inc. (Aug 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-07-31 | In | Chief Operating Officer | 2026-09-01 | 8-K, 2026-07-31 | |
| 2026-04-21 | Out | Executive Vice President | 8-K, 2026-04-21 |
Who leads Timken Co, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Operating Officer: Stephen P. Ribaudo, appointed, effective 2026-09-01 (filed 2026-07-31).
- Executive Vice President: Andreas Roellgen, departure reported (filed 2026-04-21). No successor is named in these filings.
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Find candidates like Chief Operating Officer at Timken CoEvery change, in the filing's words
Appointed: Stephen P. Ribaudo, Chief Operating Officer, effective 2026-09-01
On July 29, 2026, the Board of Directors (the "Board") of The Timken Company (the "Company") appointed Stephen P. Ribaudo to the position of Executive Vice President and Chief Operating Officer of the Company effective as of September 1, 2026.
- Mr. Ribaudo, age 41, has served as Senior Vice President and General Manager of Commercial HVAC Americas of Carrier Global Corporation ("Carrier"), a global leader in heating, ventilation, and air conditioning and refrigeration, since April 2026.
- Prior to such role, he held positions with Carrier as Vice President and General Manager of Commercial HVAC Americas from August 2023 to April 2026, and Vice President, Global Operations for Fire & Security of Carrier from March 2022 to August 2023.
- Prior to his roles with Carrier, Mr. Ribaudo served as Executive Director, Wheel & Brake Operations at Collins Aerospace, an aviation and defense technology company, from September 2020 to March 2022.
- Mr. Ribaudo will also enter into a Severance Agreement (the "Severance Agreement") with the Company, in form and substance to be approved by the Board or an applicable committee of the Board.
- In general, the Severance Agreement will provide for severance payments, continued medical, dental and vision coverage for a specified period of time, a prorated annual incentive for the year of termination and certain other benefits as described in the Severance Agreement.
- Mr. Ribaudo's participation under the Severance Agreement is generally subject to a customary release of claims in favor of the Company and his compliance with customary confidentiality, non-competition and other restrictive covenants.
Departing: Andreas Roellgen, Executive Vice President
On April 16, 2026, Andreas Roellgen ceased serving as Executive Vice President and President of Engineered Bearings of The Timken Company (the "Company") effective as of the close of business that day.
- The Company thanks Mr. Roellgen for his years of service as an officer to the Company.
- Timothy A. Graham will assume interim officer leadership for the Engineered Bearings business segment and an external search has been launched for a permanent officer successor.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.