🕵️ 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 $447K with no open-market buying against it. Doerfler Mari sold $233K in discretionary trades (May). BlackRock, Inc. trimmed 10.8% → 10.0%. One red-flag 8-K in the window: Impairment (2.06), Apr 14, 2026.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 2 sellers, $447K (3 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Doerfler Mari | 0 | – | 1 | $233K | May 8, 2026 |
| Marcon Rachel Barthelemy | 0 | – | 2 | $214K | Aug 28, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10.0% | 13G | Jun 4, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 6.9% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.3% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Marcon Rachel Barthelemy | $130K | Aug 28, 2026 | filing ↗ |
| Marcon Rachel Barthelemy | $84K | May 28, 2026 | filing ↗ |
| Doerfler Mari | $233K | May 8, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Sep 16, 2026 | filing ↗ |
| Earnings (2.02) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| 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 ↗ |