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Magnite, Inc.

MGNI
Exchange
Nasdaq
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001595974

In the last 90 days, Magnite, Inc. insiders filed 0 open-market purchases and 26 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Magnite, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
26 filings
11 insiders, $19.1M in total
Insiders trading
11
Net value
−$19.1M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Magnite, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Magnite, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Caine PaulDirector137,401Sep 18, 20267
Knopper Douglas SDirector51,136Sep 18, 20264
Buonasera DavidCHIEF TECHNOLOGY OFFICER245,155Sep 16, 202613
Spillane Robert FDirector57,715Sep 16, 20264
Evans Katie SeitzSee Remarks441,800Sep 11, 20269
Saltz AaronCHIEF LEGAL OFFICER224,389Sep 11, 20267
Harden Sarah PatriciaDirector114,751Aug 28, 20262
Gephart BrianCHIEF ACCOUNTING OFFICER102,328Aug 18, 20266
Barrett Michael G.CEO392,670Aug 18, 202610
Day DavidCHIEF FINANCIAL OFFICER452,861Aug 18, 20267
Buckley Sean PatrickSee Remarks293,060Aug 18, 202610
Lam RachelDirector230,620Aug 12, 20262
Rossman JamesDirector107,477Jun 10, 20261
Pearson David T.Director79,001Jun 10, 20261
Yu DianeDirector81,279Jun 10, 20261
Soroca Adam LeeCHIEF PRODUCT OFFICER388,425Feb 18, 20265
Frankenberg Robert JDirector119,090Jun 16, 20230
Troe Lisa LDirector114,218Jun 12, 20230
Dove James AllenChief Technology Officer191,071Aug 17, 20220
Prusz Joseph RChief Revenue Officer, DV+311,083Feb 16, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 23, 2023 (view filing)Aug 221 daySpillane Robert FDirectorSSale−25.0K$8.05−$201.3K−21.0%94.1K after
Sep 7, 2023 (view filing)Sep 61 dayBuonasera DavidChief Technology OfficerSSale−5.44K$8.58−$46.7K−2.6%207.2K after
Nov 17, 2023 (view filing)Nov 152 daysBarrett Michael G.CEOSSale−75.0K$7.80−$585.0K−5.8%1.22M after10b5-1
Mar 15, 2024 (view filing)Mar 141 daySoroca Adam LeeCHIEF PRODUCT OFFICERSSale−17.2K$11.32−$195.2K−3.4%493.5K after10b5-1
Mar 18, 2024 (view filing)Mar 153 daysBarrett Michael G.CEOSSale−75.0K$11.21−$840.8K−5.7%1.23M after
May 17, 2024 (view filing)May 161 dayBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−5.50K$12.50−$68.8K−2.0%271.9K after10b5-1
May 17, 2024 (view filing)May 161 daySoroca Adam LeeCHIEF PRODUCT OFFICERSSale−23.5K$12.00−$281.4K−4.8%461.3K after10b5-1
May 17, 2024 (view filing)May 161 dayDay DavidCHIEF FINANCIAL OFFICERSSale−19.4K$12.00−$232.4K−3.8%491.9K after10b5-1
May 17, 2024 (view filing)May 152 daysBarrett Michael G.CEOSSale−75.0K$9.02−$676.5K−6.1%1.15M after
May 17, 2024 (view filing)May 161 dayBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−16.9K$12.50−$211.6K−4.0%407.6K after10b5-1
May 21, 2024 (view filing)May 174 daysSoroca Adam LeeCHIEF PRODUCT OFFICERSSale−10.6K$12.30−$130.3K−2.3%450.7K after10b5-1
May 29, 2024 (view filing)May 245 daysBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−2.68K$12.50−$33.5K−0.7%404.9K after10b5-1
Jun 5, 2024 (view filing)Jun 32 daysDay DavidCHIEF FINANCIAL OFFICERSSale−20.7K$13.00−$269.5K−4.2%471.1K after10b5-1
Jun 7, 2024 (view filing)Jun 52 daysBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−21.7K$13.50−$292.3K−5.3%383.2K after10b5-1
Jun 13, 2024 (view filing)Jun 112 daysSpillane Robert FDirectorSSale−25.0K$13.04−$326.0K−26.6%69.1K after
Jun 14, 2024 (view filing)Jun 122 daysDay DavidCHIEF FINANCIAL OFFICERSSale−21.3K$14.01−$298.4K−4.5%449.8K after10b5-1
Jun 14, 2024 (view filing)Jun 131 dayEvans Katie SeitzCHIEF OPERATING OFFICERSSale−14.5K$13.77−$200.2K−3.4%409.0K after10b5-1
Jun 14, 2024 (view filing)Jun 14Same daySaltz AaronCHIEF LEGAL OFFICERSSale−4.78K$13.65−$65.2K−1.5%317.0K after10b5-1
Jul 17, 2024 (view filing)Jul 152 daysBarrett Michael G.CEOSSale−100.0K$15.00−$1.50M−8.7%1.05M after
Jul 17, 2024 (view filing)Jul 15-162 daysBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−39.2K$15.00−$588.2K−10.2%344.0K after2 lots10b5-1
Jul 17, 2024 (view filing)Jul 152 daysDay DavidCHIEF FINANCIAL OFFICERSSale−19.1K$15.00−$286.2K−4.2%430.8K after10b5-1
Jul 17, 2024 (view filing)Jul 152 daysGephart BrianCHIEF ACCOUNTING OFFICERSSale−16.2K$15.00−$242.5K−11.8%121.2K after10b5-1
Aug 16, 2024 (view filing)Aug 151 dayBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−10.0K$12.65−$126.5K−3.7%258.1K after10b5-1
Aug 16, 2024 (view filing)Aug 151 dayBarrett Michael G.CEOSSale−75.0K$12.63−$947.3K−7.4%944.6K after10b5-1
Aug 21, 2024 (view filing)Aug 192 daysSoroca Adam LeeCHIEF PRODUCT OFFICERSSale−7.91K$12.59−$99.6K−1.8%436.0K after10b5-1
Aug 21, 2024 (view filing)Aug 19-202 daysBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−5.25K$13.02−$68.3K−1.6%329.1K after2 lots10b5-1
Nov 8, 2024 (view filing)Nov 71 daySaltz AaronCHIEF LEGAL OFFICERSSale−5.11K$13.50−$69.0K−1.6%307.7K after10b5-1
Nov 13, 2024 (view filing)Nov 112 daysEvans Katie SeitzCHIEF OPERATING OFFICERSSale−12.8K$16.00−$205.2K−3.2%388.7K after10b5-1
Nov 13, 2024 (view filing)Nov 112 daysBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−5.24K$15.00−$78.6K−1.6%323.9K after2 lots10b5-1
Nov 13, 2024 (view filing)Nov 112 daysBarrett Michael G.CEOSSale−25.0K$15.00−$375.0K−2.6%919.6K after10b5-1
Nov 13, 2024 (view filing)Nov 112 daysGephart BrianCHIEF ACCOUNTING OFFICERSSale−2.16K$15.00−$32.3K−1.8%117.0K after10b5-1
Nov 15, 2024 (view filing)Nov 141 dayBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−12.4K$16.41−$203.7K−4.9%240.4K after10b5-1
Nov 19, 2024 (view filing)Nov 154 daysBarrett Michael G.CEOSSale−100.0K$16.14−$1.61M−11.0%809.9K after10b5-1
Nov 19, 2024 (view filing)Nov 181 dayBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−277$15.77−$4.37K−0.1%235.4K after10b5-1
Nov 19, 2024 (view filing)Nov 181 dayBuckley Sean PatrickCHIEF REVENUE OFFICERSSale−10.0K$15.60−$156.0K−3.2%303.7K after10b5-1
Nov 19, 2024 (view filing)Nov 181 daySoroca Adam LeeCHIEF PRODUCT OFFICERSSale−7.85K$15.60−$122.4K−1.8%421.3K after10b5-1
Nov 19, 2024 (view filing)Nov 181 dayGephart BrianCHIEF ACCOUNTING OFFICERSSale−2.16K$15.60−$33.6K−1.9%112.8K after10b5-1
Nov 22, 2024 (view filing)Nov 202 daysSpillane Robert FDirectorSSale−12.5K$16.12−$201.5K−15.0%70.7K after
Nov 26, 2024 (view filing)Nov 224 daysBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−9.22K$17.00−$156.7K−3.9%226.2K after10b5-1
Nov 26, 2024 (view filing)Nov 224 daysSoroca Adam LeeCHIEF PRODUCT OFFICERSSale−8.33K$17.00−$141.6K−1.9%421.3K after10b5-1
Nov 27, 2024 (view filing)Nov 252 daysSaltz AaronCHIEF LEGAL OFFICERSSale−6.11K$17.50−$106.9K−2.0%297.5K after10b5-1
Nov 27, 2024 (view filing)Nov 252 daysBarrett Michael G.CEOSSale−27.0K$17.63−$476.1K−3.3%782.9K after10b5-1
Nov 27, 2024 (view filing)Nov 27Same dayBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−431$16.78−$7.23K−0.2%225.8K after10b5-1
Dec 6, 2024 (view filing)Dec 42 daysBarrett Michael G.CEOSSale−148.0K$17.52−$2.59M−18.9%634.9K after10b5-1
Dec 13, 2024 (view filing)Dec 13Same dayBuonasera DavidCHIEF TECHNOLOGY OFFICERSSale−1.97K$16.31−$32.1K−0.9%223.8K after10b5-1
Dec 18, 2024 (view filing)Dec 16-172 daysDay DavidCHIEF FINANCIAL OFFICERSSale−25.1K$16.38−$411.7K−6.1%387.4K after2 lots10b5-1
Jan 7, 2025 (view filing)Jan 34 daysDay DavidCHIEF FINANCIAL OFFICERSSale−13.3K$17.00−$226.9K−3.4%374.0K after10b5-1
Feb 7, 2025 (view filing)Feb 6-71 dayDay DavidCHIEF FINANCIAL OFFICERSSale−52.2K$19.58−$1.02M−9.7%488.5K after2 lots10b5-1
Feb 7, 2025 (view filing)Feb 7Same daySaltz AaronCHIEF LEGAL OFFICERSSale−17.9K$19.75−$354.5K−5.1%330.6K after10b5-1
Feb 7, 2025 (view filing)Feb 7Same dayEvans Katie SeitzPresident, OperationsSSale−12.5K$20.00−$250.4K−2.5%492.1K after10b5-1