Form 4 Tracker
Sean Patrick Buckley

President, Revenue; President, Revenue & Market Strategy · 6 filings · Latest: Aug 15, 2026

MAGNITE, INC.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
MGNI
SEAN BUCKLEY—Aug 18, 2026
Proposed Sale
$24.192,759$66.7K—
MGNI
Sean Patrick BuckleyPresident, Revenue & Market StrategyAug 18, 2026
Sale
$25.002,759$69.0K293,060
MGNI
Sean Patrick BuckleyPresident, Revenue & Market StrategyAug 17, 2026
Sale
$24.318,271$201.1K295,819
MGNI
SEAN BUCKLEY—Aug 17, 2026
Proposed Sale
$24.738,271$204.5K—
MGNI
Sean Patrick BuckleyPresident, Revenue & Market StrategyAug 6, 2026
Sale
$24.4967,179$1.6M315,805
MGNI
Sean Patrick BuckleyPresident, Revenue & Market StrategyAug 6, 2026
Option Exercise
$13.9028,703$399.0K382,984
MGNI
SEAN BUCKLEY—Aug 6, 2026
Proposed Sale
$20.6767,179$1.4M—
MGNI
Sean Patrick BuckleyPresident, Revenue & Market StrategyJul 7, 2026
Sale
$21.0319,233$404.5K354,281
MGNI
SEAN BUCKLEY—Jul 7, 2026
Proposed Sale
$20.8419,233$400.8K—
MGNI
Sean Patrick BuckleyPresident, Revenue & Market StrategyJun 17, 2026
Sale
$19.0019,233$365.4K373,514
MGNI
SEAN BUCKLEY—Jun 17, 2026
Proposed Sale
$18.5519,233$356.8K—
MGNI
SEAN P BUCKLEY—Nov 24, 2025
Proposed Sale
$14.502,213$32.1K—
MGNI
SEAN P BUCKLEY—Nov 18, 2025
Proposed Sale
$13.364,426$59.1K—
MGNI
SEAN BUCKLEY—Sep 9, 2025
Proposed Sale
$24.6120,000$492.1K—
MGNI
SEAN BUCKLEY—Sep 8, 2025
Proposed Sale
$25.5620,000$511.2K—
MGNI
SEAN P BUCKLEY—Aug 19, 2025
Proposed Sale
$23.429,315$218.2K—
MGNI
Sean Patrick Buckley—Aug 18, 2025
Proposed Sale
$23.7014,461$342.7K—
MGNI
SEAN P BUCKLEY—May 16, 2025
Proposed Sale
$15.739,692$152.5K—
MGNI
SEAN P BUCKLEY—Feb 19, 2025
Proposed Sale
$19.1310,527$201.4K—
MGNI
SEAN P BUCKLEY—Feb 7, 2025
Proposed Sale
$20.0018,693$373.9K—

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