Knopper Douglas S
SEC CIK 1350876 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| MGNI | MAGNITE, INC. | Dir | 51.1K | — | $3.01M | 10 | 2021-07-09 | 2026-09-17 |
Most active insiders at MGNI, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | BARRETT MICHAEL G. | CEO, Dir | — | $13.64M |
| 2 | Buckley Sean Patrick | See Remarks | — | $2.78M |
| 3 | Knopper Douglas S | Dir | — | $2.67M |
| 4 | Evans Katie Seitz | See Remarks | — | $1.84M |
| 5 | Harden Sarah Patricia | Dir | — | $1.15M |
| 6 | Saltz Aaron | CLO | — | $936.4K |
| 7 | Buonasera David | CTO | — | $840.6K |
| 8 | Caine Paul | Dir | — | $828.9K |
| 9 | Soroca Adam Lee | Chief PRODUCT Off | — | $685.1K |
| 10 | Spillane Robert F | Dir | — | $557.3K |
Transactions 10
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | 2026-09-18 16:05 | 2026-09-17 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | S - Sale | $26.28 | -37.3K | 51.1K | -42% | -$981.2K |
| T | 2026-08-07 17:10 | 2026-08-06 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | S - Sale | $22.72 | -37.3K | 88.5K | -30% | -$848.3K |
| T | 2026-06-17 18:48 | 2026-06-16 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | S - Sale | $18.10 | -37.3K | 125.8K | -23% | -$675.8K |
| T | 2026-06-10 20:50 | 2026-06-08 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | A - Grant | $0.00 | +13.8K | 173.9K | +9% | $0 |
| T | 2026-06-10 20:50 | 2026-06-10 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | S - Sale | $15.73 | -10.8K | 163.1K | -6% | -$169.3K |
| 2025-06-06 | 2025-06-05 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | A - Grant | $0.00 | +10.8K | 160.1K | +7% | $0 | |
| 2024-06-13 | 2024-06-12 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | A - Grant | $0.00 | +14.1K | 149.3K | +10% | $0 | |
| 2023-06-16 | 2023-06-14 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | A - Grant | $0.00 | +13.7K | 135.3K | +11% | $0 | |
| 2022-06-09 | 2022-06-07 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | A - Grant | $0.00 | +16.5K | 121.5K | +16% | $0 | |
| M | 2021-07-13 | 2021-07-09 | MGNI | MAGNITE, INC. | Knopper Douglas S | Dir | S - Sale | $32.79 | -10.2K | 105.1K | -9% | -$334.4K |
Purchase Sale Sale after option exercise All abbreviations