Form 4 Tracker
MAGNITE, INC.
MGNI

44 insider filings · Latest: Aug 13, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Jul 10, 2026Jul 10 8:34 PMPAUL CAINE
Proposed Sale
15,000$21.22$318.3K

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Jul 7, 2026Jul 9 8:32 PMDavid BuonaseraCHIEF TECHNOLOGY OFFICER
Sale
1,224$21.00$25.7K268,485(D)

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Jul 7, 2026Jul 9 8:27 PMSean Patrick BuckleyPresident, Revenue & Market Strategy
Sale
19,233$21.03$404.5K354,281(D)

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Jul 7, 2026Jul 7 8:36 PMSEAN BUCKLEY
Proposed Sale
19,233$20.84$400.8K

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Jul 7, 2026Jul 7 8:14 PMADAM L SOROCA
Proposed Sale
8,000$21.00$168.0K

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Jul 7, 2026Jul 7 8:03 PMDAVID BUONASERA
Proposed Sale
1,224$21.00$25.7K

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Jul 1, 2026Jul 2 11:07 PMDavid BuonaseraCHIEF TECHNOLOGY OFFICER
Sale
9,376$20.00$187.5K269,709(D)

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Jun 29, 2026Jul 1 8:49 PMMichael G. BarrettDirector, CEO
Sale
75,000$19.50$1.5M403,074(D)

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Jul 1, 2026Jul 1 8:31 PMDAVID BUONASERA
Proposed Sale
9,376$20.00$187.5K

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Jul 1, 2026Jul 1 8:10 PMADAM L SOROCA
Proposed Sale
8,000$20.00$160.0K

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Jun 29, 2026Jun 29 8:03 PMMICHAEL G BARRETT
Proposed Sale
75,000$19.50$1.5M

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Jun 17, 2026Jun 18 11:51 PMSean Patrick BuckleyPresident, Revenue & Market Strategy
Sale
19,233$19.00$365.4K373,514(D)

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Jun 16, 2026Jun 17 10:48 PMDouglas S KnopperDirector
Sale
37,337$18.10$675.8K125,810(D)

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Jun 17, 2026Jun 17 10:45 PMDavid BuonaseraCHIEF TECHNOLOGY OFFICER
Sale
1,409$19.00$26.8K279,085(D)

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Jun 16, 2026Jun 17 10:45 PMDavid BuonaseraCHIEF TECHNOLOGY OFFICER
Sale
11,233$18.00$202.2K280,494(D)

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Jun 15, 2026Jun 17 10:45 PMDavid BuonaseraCHIEF TECHNOLOGY OFFICER
Sale
1,057$17.00$18.0K291,727(D)

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Jun 16, 2026Jun 17 10:44 PMMichael G. BarrettDirector, CEO
Sale
100,000$17.50$1.8M403,074(D)

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Jun 15, 2026Jun 17 10:44 PMMichael G. BarrettDirector, CEO
Sale
178,596$16.59$3.0M403,074(D)

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Jun 17, 2026Jun 17 8:33 PMSEAN BUCKLEY
Proposed Sale
19,233$18.55$356.8K

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Jun 17, 2026Jun 17 8:33 PMADAM L SOROCA
Proposed Sale
8,000$19.00$152.0K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Aug 6, 2026Aug 7 9:14 PMSean Patrick BuckleyPresident, Revenue & Market Strategy
Option Exercise
28,703$13.9057,405(D)

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Aug 6, 2026Aug 7 9:06 PMKatie Seitz EvansPresident, Product & Operations
Option Exercise
20,000$5.160(D)

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Aug 6, 2026Aug 7 9:00 PMMichael G. BarrettDirector, CEO
Option Exercise
293,968$5.800(D)

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Jul 15, 2026Jul 17 9:00 PMMichael G. BarrettDirector, CEO
Option Exercise
38,596$5.80293,968(D)

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Jun 29, 2026Jul 1 8:49 PMMichael G. BarrettDirector, CEO
Option Exercise
75,000$5.80332,564(D)

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Jun 16, 2026Jun 17 10:44 PMMichael G. BarrettDirector, CEO
Option Exercise
100,000$5.80407,564(D)

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Jun 15, 2026Jun 17 10:44 PMMichael G. BarrettDirector, CEO
Option Exercise
178,596$5.80507,564(D)

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