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

Insider buying vs selling

Have Magnite Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Diane YuDirector2025-08-2620,000$25.23
$504.60kSell
Paul CaineDirector2025-08-257,500$25.00
$187.50kSell
Katie Seitz EvansPresident Operations2025-08-258,345$26.00
$216.97kSell
Adam Lee SorocaCHIEF PRODUCT OFFICER2025-08-1910,579$23.47
$248.29kSell
Sean Patrick BuckleyPresident Revenue2025-08-199,315$23.42
$218.16kSell
Sean Patrick BuckleyPresident Revenue2025-08-1810,886$23.85
$259.63kSell
Michael G. BarrettCEO2025-08-1835,951$23.85
$857.43kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2025-08-187,834$23.85
$186.84kSell
Katie Seitz EvansPresident Operations2025-08-1810,487$23.85
$250.11kSell
Brian GephartCHIEF ACCOUNTING OFFICER2025-08-182,961$23.85
$70.62kSell

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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
Fmr LLC12.07%17,185,939$439.44MInstitution
Sumant Mandal12.01%17,102,338$437.31MInsider
Vanguard Group Inc9.52%13,562,285$346.79MInstitution
Capital Research Global Investors9.07%12,920,070$330.37MInstitution
Blackrock Inc7.51%10,698,044$273.55MInstitution
Boston Partners3.91%5,574,604$142.54MInstitution
Clearstone Venture Partners Iiia LP3.91%5,570,406$142.44MInsider
Wellington Management Group LLP3.83%5,447,837$139.30MInstitution
Dimensional Fund Advisors LP3.44%4,901,833$125.34MInstitution
American Century Companies Inc3.39%4,829,197$123.48MInstitution

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MGNI vs Advertising Agency Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MGNI78.76%21.24%Net SellingNet Selling
WPP1.86%0.00%
ZD92.43%7.57%Net Selling
CMPR33.13%66.87%Net SellingNet Selling
IAS64.32%35.68%Net SellingNet Selling

Magnite Stock Ownership FAQ

Who owns Magnite?

Magnite (NASDAQ: MGNI) is owned by 103.23% institutional shareholders, 27.84% Magnite insiders, and 0.00% retail investors. Sumant Mandal is the largest individual Magnite shareholder, owning 17.10M shares representing 12.01% of the company. Sumant Mandal's Magnite shares are currently valued at $453.55M.

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