🕵️ Owens Corning ($OC)

SEC insider & ownership activity, last 12 months · CIK 1370946 · every row links its SEC filing

Over the last 12 months insiders sold $383K with no open-market buying against it. Doerfler Mari sold $299K in discretionary trades (Aug–May). Blackrock, Inc. trimmed 10.8% → 10.0%. One red-flag 8-K in the window: Impairment (2.06), Apr 14, 2026.

Aug 2025: net -$66K Sep 2025: net +$0 Oct 2025: net +$0 Nov 2025: net +$0 Dec 2025: net +$0 Jan 2026: net +$0 Mar 2026: net +$0 Mar 2026: net +$0 Apr 2026: net +$0 May 2026: net -$317K Jun 2026: net +$0 Jul 2026: net +$0
Monthly net open-market insider flow, last 12 months (up = net buying)

Insider flow

0 buyers, $0 (0 lots) · 2 sellers, $383K (3 lots)

InsiderBuysBoughtSellsSoldLast
Doerfler Mari0– 2$299KMay 8, 2026
Marcon Rachel Barthelemy0– 1$84KMay 28, 2026

5%+ holders

HolderStakeClassScheduleEvent
Blackrock, Inc. 10.0% 13GJun 4, 2026 filing ↗
Vanguard Portfolio Management 6.9% 13GApr 29, 2026 filing ↗
Vanguard Capital Management 5.3% 13GApr 30, 2026 filing ↗

Planned insider sales (Form 144)

SellerPlannedApprox. sale date
Marcon Rachel Barthelemy$84KMay 28, 2026 filing ↗
Doerfler Mari$233KMay 8, 2026 filing ↗
Doerfler Mari$66KAug 12, 2025 filing ↗

Material events (8-K)

ItemEvent date
Officer/director changes (5.02)Jul 24, 2026 filing ↗
Earnings (2.02)May 6, 2026 filing ↗
Financial Statements and Exhibits (9.01)May 6, 2026 filing ↗
Other events (8.01)Apr 30, 2026 filing ↗
Officer/director changes (5.02)Apr 28, 2026 filing ↗
Shareholder vote (5.07)Apr 14, 2026 filing ↗
Impairment (2.06)Apr 14, 2026 filing ↗
Other events (8.01)Apr 14, 2026 filing ↗
Earnings (2.02)Feb 25, 2026 filing ↗
Financial Statements and Exhibits (9.01)Feb 25, 2026 filing ↗
Officer/director changes (5.02)Feb 4, 2026 filing ↗
Earnings (2.02)Nov 5, 2025 filing ↗
Financial Statements and Exhibits (9.01)Nov 5, 2025 filing ↗
Earnings (2.02)Aug 6, 2025 filing ↗
Financial Statements and Exhibits (9.01)Aug 6, 2025 filing ↗