As of May 23, 2026, Owens Corning's top three insider holders are Brian Chambers (Chair, President And Ceo, 395.54K shares), Marcio A Sandri (President, Composites, 57.47K shares), John David Williams (Director, 53.79K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Eduardo E Cordeiro | - | 15,433 | 0 | 03 Mar, 2026 |
| Daniel T Smith | Evp And Chief Growth Officer | 46,895 | 0 | 08 Aug, 2023 |
| Alfred E Festa | - | 12,506 | 0 | 13 Apr, 2026 |
| Brian Chambers | Chair, President And Ceo | 395,537 | 0 | 27 Feb, 2026 |
| W Howard Morris | - | 41,915 | 0 | 14 Apr, 2025 |
| Maryann T. Mannen | - | 27,410 | 0 | 13 Apr, 2026 |
| John David Williams | - | 53,790 | 0 | 13 Apr, 2026 |
| Suzanne P Nimocks | - | 35,953 | 0 | 03 Mar, 2026 |
| Kelly Schmidt | Vice President And Controller | 15,472 | 0 | 08 Feb, 2023 |
| Edward F Lonergan | - | 53,353 | 0 | 13 Apr, 2026 |
| Todd W Fister | Evp Chief Financial Officer | 44,952 | 0 | 27 Feb, 2026 |
| Paul Edward Martin | - | 7,618 | 0 | 13 Apr, 2026 |
| Gina A. Beredo | Evp, Cao Gc | 36,351 | 0 | 27 Feb, 2026 |
| Adrienne Elsner | - | 18,307 | 0 | 13 Apr, 2026 |
| Marcio A Sandri | President, Composites | 57,470 | 0 | 07 Feb, 2025 |
| Gunner Smith | President, Roofing | 30,053 | 0 | 25 Feb, 2025 |
| Paula Russell | Evp, Chief Hr Officer | 25,988 | 0 | 14 Apr, 2025 |
| Jose Mendez-Andino | Evp, Chief Innovation Officer | 24,430 | 0 | 13 Apr, 2026 |
| Christopher O Ball | President, Doors | 25,255 | 0 | 28 Feb, 2025 |
| Mari Doerfler | Vice President And Controller | 5,019 | 0 | 08 Apr, 2026 |
| Monaco Nicolas Del | President, Roofing | 20,520 | 0 | 27 Feb, 2026 |
| Michelle T Collins | - | 2,070 | 0 | 03 Mar, 2026 |
| Rachel Barthelemy Marcon | President, Doors | 16,548 | 0 | 27 Feb, 2026 |
| De La Nuez Jose Manuel Canovas | President, Insulation | 16,635 | 0 | 27 Feb, 2026 |
| Ann Lizabeth Baymiller | Chief Information Officer | 8,797 | 0 | 27 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 09 Apr, 2026 | Edward F Lonergan | $.01 Par Value Common | A | 351 | $114.95 | 53,353 | D | A |
| 09 Apr, 2026 | Paul Edward Martin | $.01 Par Value Common | A | 52 | $114.95 | 7,618 | D | A |
| 09 Apr, 2026 | Alfred E Festa | $.01 Par Value Common | A | 85 | $114.95 | 12,506 | D | A |
| 09 Apr, 2026 | Jose Mendez-Andino | $.01 Par Value Common | A | 101 | $114.95 | 24,430 | D | A |
| 09 Apr, 2026 | Maryann T. Mannen | $.01 Par Value Common | A | 163 | $114.95 | 27,410 | D | A |
| 09 Apr, 2026 | John David Williams | $.01 Par Value Common | A | 367 | $114.95 | 53,790 | D | A |
| 09 Apr, 2026 | Adrienne Elsner | $.01 Par Value Common | A | 125 | $114.95 | 18,307 | D | A |
| 06 Apr, 2026 | Mari Doerfler | $.01 Par Value Common | D | 1,167 | $106.28 | 5,019 | D | F |
| 27 Feb, 2026 | Maryann T. Mannen | $.01 Par Value Common | A | 412 | $122.07 | 27,247 | D | A |
| 27 Feb, 2026 | Paul Edward Martin | $.01 Par Value Common | A | 381 | $122.07 | 7,566 | D | A |
| 27 Feb, 2026 | Alfred E Festa | $.01 Par Value Common | A | 406 | $122.07 | 12,421 | D | A |
| 27 Feb, 2026 | Eduardo E Cordeiro | $.01 Par Value Common | A | 406 | $122.07 | 15,433 | D | A |
| 27 Feb, 2026 | Adrienne Elsner | $.01 Par Value Common | A | 381 | $122.07 | 18,182 | D | A |
| 27 Feb, 2026 | Suzanne P Nimocks | $.01 Par Value Common | A | 413 | $122.07 | 35,953 | D | A |
| 27 Feb, 2026 | Edward F Lonergan | $.01 Par Value Common | A | 748 | $122.07 | 53,003 | D | A |
| 27 Feb, 2026 | Michelle T Collins | $.01 Par Value Common | A | 476 | $122.07 | 2,070 | D | A |
| 25 Feb, 2026 | Jose Mendez-Andino | $.01 Par Value Common | A | 9,517 | $0.00 | 28,576 | D | A |
| 25 Feb, 2026 | Brian Chambers | $.01 Par Value Common | A | 55,512 | $0.00 | 420,297 | D | A |
| 25 Feb, 2026 | Gina A. Beredo | $.01 Par Value Common | A | 7,929 | $0.00 | 39,889 | D | A |
| 25 Feb, 2026 | Todd W Fister | $.01 Par Value Common | A | 10,309 | $0.00 | 49,706 | D | A |