Transaction · 0001778484-26-000008

Gephart Brian

Gephart Brian, CAO, reported a transaction classified as withholding at MAGNITE, INC. involving 3789.000000 shares for an estimated $93701.97. Reported holdings after the transaction were 102328.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

withholdingSEC transaction code FCAO
MGNIMAGNITE, INC.
Filing timeAug 18
Trade dateAug 15, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$24.53
Pre-filing
1mo ago -18.8%1w ago +0.8%1d ago +0.8%
Returns since
7d -4.0%30d -6.7%90d -6.7%180d -6.7%1y -6.7%

MGNI price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
MGNI since 2026-08-18Filed 17 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0001778484-26-000008
Common Stock
Transaction date
Aug 15, 2026
Filed Aug 18, 2026, 08:20 PM · 3d delay
Shares
3.78k sh
$2.47k per share
Estimated value
-$9.37M
Computed from shares × price
Holdings after
102k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership
-16score
Filing-only score

-16

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CHIEF ACCOUNTING OFFICER

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    Represents the non-discretionary forfeiture of shares on behalf of the Reporting Person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the v…

Original filing · 0001778484-26-000008
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Same reporting owner
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