Form 4 for MGNI MAGNITE, INC.
Accepted 2026-07-01 16:49:58 ET · period of report 2026-06-29 · accession 0001193125-26-292738 · 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 | 2026-07-01 16:49 | 2026-06-29 | MGNI | BARRETT MICHAEL G. | CEO, Dir | M - OptEx | $5.80 | +75.0K | 478.1K | +19% | +$435.0K |
| DT | 2026-07-01 16:49 | 2026-06-29 | MGNI | BARRETT MICHAEL G. | CEO, Dir | S - Sale+OE | $19.50 | -75.0K | 403.1K | -16% | -$1.46M |
| DT | 2026-07-01 16:49 | 2026-06-29 | MGNI | BARRETT MICHAEL G. | CEO, Dir | M - OptEx | $0.00 | -75.0K | 332.6K | -18% | $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 | 2026-06-29 | M | A | 75,000 | $5.80 | 478,074 | 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. |
| 2 | Common | Common Stock | 2026-06-29 | S | D | 75,000 | $19.50 | 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 | Employee Stock Option (Right to Buy) | 2026-06-29 | M | D | 75,000 | $0.00 | 332,564 | D | $5.80 · — to 2027-03-17 | 75,000 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. |