Form 4 for MGNI MAGNITE, INC.
Accepted 2026-09-03 16:56:22 ET · period of report 2026-09-01 · accession 0001966857-26-000013 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-09-03 16:56 | 2026-09-01+ | MGNI | Buonasera David | CTO | S - Sale | $23.68 | -6,414 | 246.3K | -3% | -$151.9K |
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 | 2026-09-01 | S | D | 5,371 | $23.42 | 247,363 | D | — | — | (F1) The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 11, 2025. |
| 2 | Common | Common Stock | 2026-09-02 | S | D | 1,043 | $25.00 | 246,320 | D | — | — | (F1) The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 11, 2025. |