Knopper Douglas S (CIK 1350876) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-18). Recent activity: Sell MGNI (37,337 shares), Sell MGNI (37,337 shares), Sell MGNI (37,337 shares), Buy MGNI (13,798 shares), Sell MGNI (10,766 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-18 | MAGNITE, INC. (MGNI) | Director | Sell | 37,337 | $981,216 |
| 2026-08-07 | MAGNITE, INC. (MGNI) | Director | Sell | 37,337 | $848,297 |
| 2026-06-17 | MAGNITE, INC. (MGNI) | Director | Sell | 37,337 | $675,800 |
| 2026-06-10 | MAGNITE, INC. (MGNI) | Director | Buy | 13,798 | $0 |
| 2026-06-10 | MAGNITE, INC. (MGNI) | Director | Sell | 10,766 | $169,349 |
| 2025-06-06 | MAGNITE, INC. (MGNI) | Director | Buy | 10,766 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-18