Form 4 for MGNI MAGNITE, INC.
Accepted 2026-08-07 17:00:16 ET · period of report 2026-08-06 · accession 0001100612-26-000009 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DT | 2026-08-07 17:00 | 2026-08-06 | MGNI | BARRETT MICHAEL G. | CEO, Dir | M - OptEx | $5.80 | +294.0K | 697.0K | +73% | +$1.71M |
| DT | 2026-08-07 17:00 | 2026-08-06 | MGNI | BARRETT MICHAEL G. | CEO, Dir | S - Sale+OE | $22.72 | -294.0K | 403.1K | -42% | -$6.68M |
| DT | 2026-08-07 17:00 | 2026-08-06 | MGNI | BARRETT MICHAEL G. | CEO, Dir | M - OptEx | $0.00 | -294.0K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-08-06 | M | A | 293,968 | $5.80 | 697,042 | D | — | — | (F1) This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026. |
| 2 | Common | Common Stock | 2026-08-06 | S | D | 293,968 | $22.72 | 403,074 | D | — | — | (F1) This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026. |
| 3 | Derivative | Stock Option (right to buy) | 2026-08-06 | M | D | 293,968 | $0.00 | 0 | D | $5.80 · — to 2027-03-17 | 293,968 Common Stock | (F1) This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2026. (F3) Granted as compensation for services. (F2) The stock options have fully vested and are immediately exercisable. |