Mannen Maryann T. (CIK 1408964) reported 19 SEC Form 4 insider transactions across 3 companies over the past 18 months (most recent 2026-08-04). Recent activity: Sell MPC (908 shares), Buy OC (163 shares), Buy MPLX (52,817 shares), Sell MPLX (3,407 shares), Sell MPLX (3,404 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-04 | Marathon Petroleum Corp (MPC) | Chairman, President & CEO | Sell | 908 | $283,096 |
| 2026-04-13 | Owens Corning (OC) | Director | Buy | 163 | $18,738 |
| 2026-03-03 | MPLX LP (MPLX) | Chairman, President & CEO | Buy | 52,817 | $0 |
| 2026-03-03 | MPLX LP (MPLX) | Chairman, President & CEO | Sell | 3,407 | $201,763 |
| 2026-03-03 | MPLX LP (MPLX) | Chairman, President & CEO | Sell | 3,404 | $201,585 |
| 2026-03-03 | MPLX LP (MPLX) | Chairman, President & CEO | Sell | 6,409 | $379,541 |
| 2026-03-03 | Marathon Petroleum Corp (MPC) | Chairman, President & CEO | Buy | 15,266 | $0 |
| 2026-03-03 | Marathon Petroleum Corp (MPC) | Chairman, President & CEO | Sell | 952 | $196,398 |
| 2026-03-03 | Marathon Petroleum Corp (MPC) | Chairman, President & CEO | Sell | 778 | $160,501 |
| 2026-03-03 | Marathon Petroleum Corp (MPC) | Chairman, President & CEO | Sell | 2,236 | $461,287 |
| 2026-03-03 | Owens Corning (OC) | Director | Buy | 412 | $50,293 |
| 2026-01-23 | Owens Corning (OC) | Director | Buy | 147 | $18,297 |
| 2025-11-10 | Owens Corning (OC) | Director | Buy | 159 | $16,658 |
| 2025-11-10 | Owens Corning (OC) | Director | Buy | 439 | $45,744 |
| 2025-08-12 | Owens Corning (OC) | Director | Buy | 318 | $45,754 |
| 2025-08-11 | Owens Corning (OC) | Director | Buy | 111 | $16,362 |
| 2025-08-05 | Marathon Petroleum Corp (MPC) | President & CEO | Sell | 908 | $151,082 |
| 2025-05-13 | Owens Corning (OC) | Director | Buy | 335 | $45,707 |
| 2025-04-14 | Owens Corning (OC) | Director | Buy | 119 | $16,049 |
来源：SEC Form 4 申报文件 · 截至 2026-08-04