Gephart Brian

SEC Form 4 insider
CHIEF FINANCIAL OFFICER · MAGNITE, INC. ($MGNI)
1 thesis · first seen Aug 12, 2026
WindowThesesResolvedWinsWin rateAvg returnMedian return
1d1100%+1.6%+1.6%
3d1100%+1.6%+1.6%
1w111100%-2.0%-2.0%
1m111100%-2.3%-2.3%
3m1100%+17.2%+17.2%
6m000———
1y000———

Past performance does not predict future results. Informational only, not investment advice.

Thesis history

$MGNISEC Form 4bearish
Sold 12,479 @ $24.68 avg · $307,982 · 2026-08-10

Form 4: Gephart Brian sold MGNI

Gephart Brian (CHIEF ACCOUNTING OFFICER at MAGNITE, INC.) reported an open-market sale of 12,479 shares of MGNI at an average $24.68, roughly $307,982, in a Form 4 filed 2026-08-12.

At post $24.34Now $29.07+19.4% since postedas of Nov 9, 11:30 AM ET
1d+1.6%
3d+1.6%
1w-2.0%
1m-2.3%
3m+17.2%
6m—
1y—
View filing on SEC.gov →

End of results.