InsiderTrades

Form 4 for MGNI MAGNITE, INC.

Accepted 2026-07-02 19:07:34 ET · period of report 2026-07-01 · accession 0001193125-26-295113 · 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
T 2026-07-02 19:07 2026-07-01 MGNI Buonasera David CTO S - Sale $20.00 -9,376 269.7K -3% -$187.5K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-07-01 S D 9,376 $20.00 269,709 D — — (F1) The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 11, 2025.