Stefan Demmerle was named Chief Technology Officer of Borgwarner Inc, effective July 1, 2026. As of November 6, 2026, Borgwarner Inc has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from May 28, 2026 to July 31, 2026, naming 3 appointments (Form 8-K, May 28, 2026).
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Borgwarner Inc reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-05-28 to 2026-07-31. They name 2 people. Every row below is cited to the filing it comes from, and this page adds each new change as Borgwarner Inc files it.
Also on the record for Borgwarner Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| April 30, 2026 | Stake report, Schedule 13G/A, by BlackRock Portfolio Management LLC | 4.2% of the class | 5%+ stakes | Source |
| April 29, 2026 | Stake report, Schedule 13G, by Vanguard Capital Management | 5.27% of the class | 5%+ stakes | Source |
| April 29, 2026 | Stake report, Schedule 13G, by Vanguard Portfolio Management | 6.59% of the class | 5%+ stakes | Source |
| March 26, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | — | 5%+ stakes | Source |
| January 30, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | 11.67% of the class | 5%+ stakes | Source |
| January 21, 2026 | Stake report, Schedule 13G/A, by BlackRock Portfolio Management LLC | 7% of the class | 5%+ stakes | Source |
| January 21, 2026 | Stake report, Schedule 13G/A, by BlackRock, Inc. | 8.6% of the class | 5%+ stakes | Source |
| October 30, 2025 | Stake report, Schedule 13G/A, by The Vanguard Group | 12.74% of the class | 5%+ stakes | Source |
| October 17, 2025 | Stake report, Schedule 13G, by BlackRock Portfolio Management LLC | 5.3% of the class | 5%+ stakes | Source |
| August 14, 2025 | Stake report, Schedule 13G/A, by HARRIS ASSOCIATES L P | 1.3% of the class | 5%+ stakes | Source |
| August 8, 2025 | Stake report, Schedule 13G/A, by Victory Capital Management, Inc. | 3.55% of the class | 5%+ stakes | Source |
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More on Borgwarner Inc and the records around it.
Borgwarner Inc elsewhere on the record
Companies that share a holder
- HARRIS ASSOCIATES L P also filed stake reports on 19 other companies: Corebridge Financial, Inc. (May 2026), ICON plc (May 2026), Lithia Motors, Inc. (May 2026)
- Victory Capital Management, Inc. also filed stake reports on 41 other companies: Angel Oak Mortgage REIT, Inc. (Nov 2026), Bowhead Specialty Holdings Inc. (Jul 2026), Dole plc (Jul 2026)
- BlackRock Portfolio Management LLC also filed stake reports on 118 other companies: AMERISAFE INC (Nov 2026), BlackRock ETF Trust (Nov 2026), iShares J.P. Morgan EM Local Currency Bond ETF (Nov 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-07-31 | In | Director | 8-K, 2026-07-31 | ||
| 2026-07-31 | In | 8-K, 2026-07-31 | |||
| 2026-05-28 | In | Chief Technology Officer | 2026-07-01 | 8-K, 2026-05-28 |
Who leads Borgwarner Inc, 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.
- Director: Rajesh Kalathur, appointed (filed 2026-07-31).
- Chief Technology Officer: Stefan Demmerle, appointed, effective 2026-07-01 (filed 2026-05-28).
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Find candidates like Director at Borgwarner IncEvery change, in the filing's words
Appointed: Rajesh Kalathur, Director
On July 30, 2026 , the Board of Directors (the "Board") of BorgWarner Inc. (the "Company") increased the size of the Board to from eight to nine members and appointed Rajesh Kalathur to the Board as an independent director to fill the vacancy created by that increase.
Appointed: Rajesh Kalathur
The Board has not yet determined the committee(s) on which Mr. Kalathur will be appointed to serve.
Appointed: Stefan Demmerle, Chief Technology Officer, effective 2026-07-01
On May 26, 2026, BorgWarner Inc. (the "Company") appointed Stefan Demmerle to serve as Vice President of BorgWarner Inc., President and General Manager of Battery Energy Systems and Chief Technology Officer of BorgWarner Inc., effective July 1, 2026.
- Prior to this move, Mr. Demmerle has served as Vice President of BorgWarner Inc. and President and General Manager of BorgWarner PowerDrive Systems since 2015.
- Other than the change in title and responsibilities as described herein, there will be no changes to the terms of Mr. Demmerle's employment with the Company, including his compensatory arrangements.
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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.