Form 4 Tracker
MAGNITE, INC.
MGNI

44 insider filings · Latest: Aug 13, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Aug 14, 2026Aug 14 8:45 PMPAUL CAINE
Proposed Sale
2,500$24.58$61.5K

View →

Aug 10, 2026Aug 12 8:54 PMBrian GephartCHIEF ACCOUNTING OFFICER
Sale
12,479$24.68$308.0K106,117(D)

View →

Aug 10, 2026Aug 12 8:51 PMRachel LamDirector
Sale
10,000$24.16$241.6K230,620(D)

View →

Aug 10, 2026Aug 12 8:49 PMPaul CaineDirector
Sale
5,000$24.35$121.8K157,401(D)

View →

Aug 10, 2026Aug 10 8:21 PMRACHEL LAM
Proposed Sale
10,000$24.16$241.6K

View →

Aug 10, 2026Aug 10 8:16 PMBRIAN GEPHART
Proposed Sale
12,479$24.68$308.0K

View →

Aug 6, 2026Aug 7 9:14 PMSean Patrick BuckleyPresident, Revenue & Market Strategy
Sale
67,179$24.49$1.6M315,805(D)

View →

Aug 6, 2026Aug 7 9:10 PMDouglas S KnopperDirector
Sale
37,337$22.72$848.3K88,473(D)

View →

Aug 6, 2026Aug 7 9:09 PMDavid BuonaseraCHIEF TECHNOLOGY OFFICER
Sale
7,649$23.46$179.5K260,836(D)

View →

Aug 6, 2026Aug 7 9:06 PMKatie Seitz EvansPresident, Product & Operations
Sale
20,000$24.00$480.0K496,840(D)

View →

Aug 6, 2026Aug 7 9:00 PMMichael G. BarrettDirector, CEO
Sale
293,968$22.72$6.7M403,074(D)

View →

Aug 6, 2026Aug 6 8:25 PMSEAN BUCKLEY
Proposed Sale
67,179$20.67$1.4M

View →

Aug 6, 2026Aug 6 8:24 PMDOUGLAS KNOPPER
Proposed Sale
19,128$20.67$395.4K

View →

Aug 6, 2026Aug 6 8:24 PMKATHERYN EVANS
Proposed Sale
20,000$24.00$480.0K

View →

Aug 6, 2026Aug 6 8:24 PMDouglas S. Knopper & Abigail L. Knopper TTEES of the Knopper Joint Mgmt Trust 11/15/13
Proposed Sale
18,209$20.67$376.4K

View →

Aug 6, 2026Aug 6 8:22 PMDAVID BUONASERA
Proposed Sale
7,649$23.46$179.5K

View →

Aug 6, 2026Aug 6 8:01 PMMICHAEL G BARRETT
Proposed Sale
293,968$22.72$6.7M

View →

Jul 15, 2026Jul 17 9:00 PMMichael G. BarrettDirector, CEO
Sale
38,596$20.35$785.4K403,074(D)

View →

Jul 15, 2026Jul 15 8:20 PMMICHAEL G BARRETT
Proposed Sale
38,596$20.35$785.5K

View →

Jul 10, 2026Jul 14 9:50 PMPaul CaineDirector
Sale
5,000$20.64$103.2K162,401(D)

View →

Page 1 of 8

Next →

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)

View →

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

View →

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

View →

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

View →

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

View →

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

View →

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

View →