InsiderTrades

Form 4 for MGNI MAGNITE, INC.

Accepted 2026-09-11 16:19:56 ET · period of report 2026-09-11 · accession 0001700262-26-000013 · 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
T 2026-09-11 16:19 2026-09-11 MGNI Evans Katie Seitz See Remarks S - Sale $24.00 -14.0K 441.8K -3% -$335.9K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-09-11 S D 13,997 $24.00 441,800 D — — (F1) The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 8, 2026.