Owens Corning (OC) Insider Ownership

Historic Insider Ownership Trends

As of March 23, 2026, the three largest insider holders of OC are Brian Chambers (Chair, President And Ceo, 395.54K shares), Marcio A Sandri (President, Composites, 57.47K shares), John David Williams (Director, 53.42K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Brian Chambers Chair, President And Ceo 395,537 0 27 Feb, 2026
Marcio A Sandri President, Composites 57,470 0 07 Feb, 2025
John David Williams 53,422 0 03 Mar, 2026
Edward F Lonergan 53,003 0 03 Mar, 2026
Daniel T Smith Evp And Chief Growth Officer 46,895 0 08 Aug, 2023
Todd W Fister Evp Chief Financial Officer 44,952 0 27 Feb, 2026
W Howard Morris 41,915 0 14 Apr, 2025
W Howard Morris 41,915 0 14 Apr, 2025
Kenneth Scott Parks Evp Chief Financial Officer 37,295 0 06 Feb, 2023
Gina A. Beredo Evp, Cao Gc 36,351 0 27 Feb, 2026
Suzanne P Nimocks 35,953 0 03 Mar, 2026
Gunner Smith President, Roofing 30,053 0 25 Feb, 2025
Maryann T. Mannen 27,247 0 03 Mar, 2026
Paula Russell Evp, Chief Hr Officer 25,988 0 14 Apr, 2025
Christopher O Ball President, Doors 25,255 0 28 Feb, 2025
Jose Mendez-Andino Evp, Chief Innovation Officer 24,330 0 27 Feb, 2026
Monaco Nicolas Del President, Roofing 20,520 0 27 Feb, 2026
Adrienne Elsner 18,182 0 03 Mar, 2026
De La Nuez Jose Manuel Canovas President, Insulation 16,635 0 27 Feb, 2026
Rachel Barthelemy Marcon President, Doors 16,548 0 27 Feb, 2026
Kelly Schmidt Vice President And Controller 15,472 0 08 Feb, 2023
Alfred E Festa 12,421 0 03 Mar, 2026
Ann Lizabeth Baymiller Chief Information Officer 8,797 0 27 Feb, 2026
Paul Edward Martin 7,566 0 03 Mar, 2026
Mari Doerfler Vice President And Controller 6,186 0 06 Feb, 2026
Michelle T Collins 2,070 0 03 Mar, 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
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 John David Williams $.01 Par Value Common A 381 $122.07 53,422 D A
27 Feb, 2026 Suzanne P Nimocks $.01 Par Value Common A 413 $122.07 35,953 D A
27 Feb, 2026 Adrienne Elsner $.01 Par Value Common A 381 $122.07 18,182 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 Brian Chambers $.01 Par Value Common A 55,512 $0.00 420,297 D A
25 Feb, 2026 Rachel Barthelemy Marcon $.01 Par Value Common A 1,322 $0.00 16,941 D A
25 Feb, 2026 Ann Lizabeth Baymiller $.01 Par Value Common A 1,255 $0.00 9,359 D A
25 Feb, 2026 Jose Mendez-Andino $.01 Par Value Common A 9,517 $0.00 28,576 D A
25 Feb, 2026 Monaco Nicolas Del $.01 Par Value Common A 2,643 $0.00 21,638 D A
25 Feb, 2026 De La Nuez Jose Manuel Canovas $.01 Par Value Common A 1,809 $0.00 17,471 D A
25 Feb, 2026 Todd W Fister $.01 Par Value Common A 10,309 $0.00 49,706 D A
25 Feb, 2026 Gina A. Beredo $.01 Par Value Common A 7,929 $0.00 39,889 D A
25 Feb, 2026 Ann Lizabeth Baymiller $.01 Par Value Common D 562 $123.48 8,797 D F
25 Feb, 2026 Brian Chambers $.01 Par Value Common D 24,760 $123.48 395,537 D F
25 Feb, 2026 Monaco Nicolas Del $.01 Par Value Common D 1,118 $123.48 20,520 D F
25 Feb, 2026 Rachel Barthelemy Marcon $.01 Par Value Common D 393 $123.48 16,548 D F