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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
Jul 13, 2021 (view filing)Jul 94 daysSaltz AaronGeneral CounselSSale−5.00K$32.81−$164.0K−1.9%263.1K after2 lots
Jul 13, 2021 (view filing)Jul 94 daysKnopper Douglas SDirectorSSale−10.2K$32.79−$334.4K−8.8%105.1K after2 lots
Jul 13, 2021 (view filing)Jul 121 dayCaine PaulDirectorSSale−15.0K$31.45−$471.8K−9.5%143.5K after3 lots
Aug 11, 2021 (view filing)Aug 92 daysSaltz AaronGeneral CounselSSale−5.00K$33.81−$169.1K−1.9%259.9K after
Aug 18, 2021 (view filing)Aug 162 daysPrusz Joseph RChief Revenue Officer, DV+SSale−3.01K$26.82−$80.8K−0.9%327.3K after
Aug 18, 2021 (view filing)Aug 162 daysSoroca Adam LeeChief Product OfficerSSale−3.40K$26.82−$91.1K−1.0%335.3K after
Aug 18, 2021 (view filing)Aug 162 daysBarrett Michael G.CEOSSale−81.3K$27.81−$2.26M−5.7%1.34M after3 lots
Aug 18, 2021 (view filing)Aug 162 daysEvans Katie SeitzChief Operating OfficerSSale−3.33K$26.82−$89.3K−0.8%418.9K after
Aug 18, 2021 (view filing)Aug 162 daysDay DavidChief Financial OfficerSSale−5.18K$26.82−$138.8K−1.9%268.3K after
Aug 18, 2021 (view filing)Aug 162 daysSaltz AaronGeneral CounselSSale−1.48K$26.82−$39.7K−0.6%258.4K after
Sep 10, 2021 (view filing)Sep 10Same daySaltz AaronGeneral CounselSSale−40.0K$30.21−$1.21M−13.1%266.5K after
Sep 15, 2021 (view filing)Sep 13-142 daysEvans Katie SeitzChief Operating OfficerSSale−64.2K$29.24−$1.88M−15.3%354.7K after4 lots
Dec 3, 2021 (view filing)Dec 12 daysSoroca Adam LeeChief Product OfficerSSale−20.0K$18.23−$364.6K−6.3%299.8K after
Dec 8, 2021 (view filing)Dec 62 daysLam RachelDirectorPPurchase+2.50K$16.15+$40.4K+1.4%181.8K after
Dec 17, 2021 (view filing)Dec 152 daysSoroca Adam LeeChief Product OfficerSSale−5.00K$17.11−$85.5K−1.7%294.8K after
Jan 20, 2022 (view filing)Jan 182 daysSoroca Adam LeeChief Product OfficerSSale−5.00K$14.61−$73.0K−1.7%289.8K after
Feb 16, 2022 (view filing)Feb 151 daySoroca Adam LeeChief Product OfficerSSale−5.00K$13.66−$68.3K−1.3%378.1K after
Mar 7, 2022 (view filing)Mar 34 daysLam RachelDirectorPPurchase+2.50K$12.81+$32.0K+1.4%184.3K after
Apr 8, 2022 (view filing)Apr 62 daysEvans Katie SeitzChief Operating OfficerSSale−15.8K$13.13−$207.5K−3.9%393.3K after
May 12, 2022 (view filing)May 111 dayLam RachelDirectorPPurchase+2.50K$9.00+$22.5K+1.4%186.8K after
Nov 17, 2022 (view filing)Nov 152 daysBarrett Michael G.CEOSSale−75.0K$11.58−$868.5K−5.0%1.43M after2 lots
Mar 3, 2023 (view filing)Mar 12 daysEvans Katie SeitzChief Operating OfficerSSale−78.2K$10.99−$858.9K−16.6%392.4K after
Mar 17, 2023 (view filing)Mar 152 daysBarrett Michael G.CEOSSale−75.0K$8.39−$629.3K−4.9%1.46M after
May 18, 2023 (view filing)May 162 daysBuckley Sean PatrickChief Revenue OfficerSSale−5.64K$10.88−$61.4K−1.7%335.0K after
May 18, 2023 (view filing)May 162 daysDay DavidChief Financial OfficerSSale−16.1K$10.88−$174.8K−3.4%463.0K after
May 18, 2023 (view filing)May 162 daysSaltz AaronChief Legal OfficerSSale−3.80K$10.88−$41.4K−1.1%330.8K after
May 18, 2023 (view filing)May 162 daysEvans Katie SeitzChief Operating OfficerSSale−7.45K$10.88−$81.1K−1.9%384.9K after
May 18, 2023 (view filing)May 162 daysGephart BrianChief Accounting OfficerSSale−1.24K$10.88−$13.5K−1.3%96.6K after
May 18, 2023 (view filing)May 162 daysBuonasera DavidChief Technology OfficerSSale−1.56K$10.88−$17.0K−0.7%222.0K after
May 18, 2023 (view filing)May 162 daysBarrett Michael G.CEOSSale−24.7K$10.88−$268.5K−1.6%1.51M after
May 18, 2023 (view filing)May 162 daysSoroca Adam LeeChief Product OfficerSSale−12.4K$10.88−$134.8K−2.8%432.3K after
Jun 2, 2023 (view filing)May 312 daysBarrett Michael G.CEOSSale−75.0K$11.69−$876.8K−5.0%1.43M after10b5-1
Jun 6, 2023 (view filing)Jun 24 daysBuckley Sean PatrickChief Revenue OfficerSSale−12.2K$12.99−$158.7K−3.6%322.8K after
Jun 12, 2023 (view filing)Jun 84 daysTroe Lisa LDirectorSSale−5.77K$13.14−$75.8K−4.8%114.2K after10b5-1
Jun 14, 2023 (view filing)Jun 122 daysEvans Katie SeitzChief Operating OfficerSSale−11.1K$13.43−$149.0K−2.9%373.8K after10b5-1
Jun 14, 2023 (view filing)Jun 12-132 daysDay DavidChief Financial OfficerSSale−16.5K$13.41−$221.6K−3.6%446.5K after2 lots10b5-1
Jun 30, 2023 (view filing)Jun 291 dayDay DavidChief Financial OfficerSSale−21.6K$14.00−$301.9K−4.8%424.9K after10b5-1
Jul 6, 2023 (view filing)Jul 33 daysBuonasera DavidChief Technology OfficerSSale−6.62K$13.43−$89.0K−3.0%215.3K after
Jul 13, 2023 (view filing)Jul 112 daysDay DavidChief Financial OfficerSSale−9.58K$15.00−$143.8K−2.2%424.9K after10b5-1
Jul 13, 2023 (view filing)Jul 112 daysBarrett Michael G.CEOSSale−25.0K$15.02−$375.5K−1.7%1.41M after10b5-1
Jul 13, 2023 (view filing)Jul 112 daysEvans Katie SeitzChief Operating OfficerSSale−17.8K$15.00−$266.6K−4.8%356.1K after10b5-1
Aug 17, 2023 (view filing)Aug 152 daysBarrett Michael G.CEOSSale−75.0K$8.52−$639.0K−5.3%1.33M after10b5-1
Aug 18, 2023 (view filing)Aug 162 daysDay DavidChief Financial OfficerSSale−9.08K$8.31−$75.4K−2.1%415.9K after
Aug 18, 2023 (view filing)Aug 162 daysGephart BrianChief Accounting OfficerSSale−1.14K$8.31−$9.48K−1.2%95.4K after
Aug 18, 2023 (view filing)Aug 162 daysBuonasera DavidChief Technology OfficerSSale−2.65K$8.31−$22.0K−1.2%212.7K after
Aug 18, 2023 (view filing)Aug 162 daysSaltz AaronChief Legal OfficerSSale−3.59K$8.31−$29.9K−1.3%275.4K after
Aug 18, 2023 (view filing)Aug 162 daysEvans Katie SeitzChief Operating OfficerSSale−7.04K$8.31−$58.5K−2.0%349.0K after
Aug 18, 2023 (view filing)Aug 162 daysBarrett Michael G.CEOSSale−35.9K$8.31−$298.1K−2.7%1.29M after
Aug 18, 2023 (view filing)Aug 162 daysSoroca Adam LeeChief Product OfficerSSale−6.84K$8.31−$56.8K−1.6%425.4K after
Aug 18, 2023 (view filing)Aug 162 daysBuckley Sean PatrickChief Revenue OfficerSSale−5.27K$8.31−$43.8K−1.6%317.5K after