NASDAQ: MGNI
Magnite Inc Stock Ownership - Who owns Magnite?

Insider buying vs selling

Have Magnite Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Adam Lee SorocaCHIEF PRODUCT OFFICER2026-02-1821,529$12.00
$258.35kSell
Aaron SaltzCHIEF LEGAL OFFICER2026-02-1512,761$11.70
$149.30kSell
Sean Patrick BuckleyPresident Revenue2026-02-1526,942$11.70
$315.22kSell
Adam Lee SorocaCHIEF PRODUCT OFFICER2026-02-1518,933$11.70
$221.52kSell
David DayCHIEF FINANCIAL OFFICER2026-02-1530,617$11.70
$358.22kSell
Katie Seitz EvansPresident Operations2026-02-1527,428$11.70
$320.91kSell
Brian GephartCHIEF ACCOUNTING OFFICER2026-02-156,149$11.70
$71.94kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-02-1517,137$11.70
$200.50kSell
Michael G. BarrettCEO2026-02-1523,549$11.70
$275.52kSell
David DayCHIEF FINANCIAL OFFICER2026-01-0935,169$16.17
$568.68kSell

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Net Insider Buy/Sell (L12M) Ownership

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MGNI Shareholders

What type of owners hold Magnite Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Sumant Mandal11.85%17,102,338$211.73MInsider
Vanguard Group Inc10.25%14,802,630$183.26MInstitution
Capital Research Global Investors8.95%12,920,289$159.95MInstitution
Blackrock Inc8.03%11,593,249$143.52MInstitution
Wellington Management Group LLP5.98%8,629,238$106.83MInstitution
Fmr LLC4.64%6,701,174$82.96MInstitution
Clearstone Venture Partners Iiia LP3.86%5,570,406$68.96MInsider
American Century Companies Inc3.66%5,286,928$65.45MInstitution
News Corp3.29%4,746,349$58.76MInsider
Boston Partners2.85%4,108,893$50.87MInstitution

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MGNI vs Advertising Agency Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MGNI77.26%22.74%Net SellingNet Selling
CMPR34.12%65.88%Net SellingNet Selling
ZD92.45%7.55%Net SellingNet Selling
STGW18.35%81.65%Net SellingNet Selling
QMMM1.15%0.00%

Magnite Stock Ownership FAQ

Who owns Magnite?

Magnite (NASDAQ: MGNI) is owned by 94.61% institutional shareholders, 27.85% Magnite insiders, and 0.00% retail investors. Sumant Mandal is the largest individual Magnite shareholder, owning 17.10M shares representing 11.85% of the company. Sumant Mandal's Magnite shares are currently valued at $212.92M.

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