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

Insider buying vs selling

Have Magnite Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Paul CaineDirector2026-10-1212,500$25.29
$316.13kSell
Paul CaineDirector2026-09-177,500$26.50
$198.75kSell
Douglas S. KnopperDirector2026-09-1737,337$26.28
$981.22kSell
Robert F. SpillaneDirector2026-09-1410,363$23.76
$246.22kSell
David BuonaseraCTO2026-09-141,165$24.00
$27.96kSell
Robert F. SpillaneDirector2026-09-1410,363$5.17
$53.58kBuy
Katie Seitz EvansPres2026-09-1113,997$24.00
$335.93kSell
Paul CaineDirector2026-09-105,000$23.53
$117.65kSell
Aaron SaltzCLO2026-09-1040,000$23.41
$936.40kSell
Katie Seitz EvansPres2026-09-0911,100$23.46
$260.41kSell

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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 Mandal11.92%17,102,338$402.76MInsider
Clearstone Venture Partners Iiia LP3.88%5,570,406$131.18MInsider
News Corp3.31%4,746,349$111.78MInsider
Mayfield XII A Delaware L P2.50%3,587,675$84.49MInsider
Frank Addante0.79%1,136,069$26.75MInsider
Thomas Kershaw0.33%473,763$11.16MInsider
David Day0.32%452,861$10.66MInsider
Katie Seitz Evans0.31%441,800$10.40MInsider
Todd L. Tappin0.31%441,327$10.39MInsider
Mark Zagorski0.30%436,917$10.29MInsider

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MGNI vs Advertising Agency Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MGNI0.10%27.77%Net SellingNet Selling
LFTO0.02%99.98%Net BuyingNet Buying
STGW0.02%99.98%Net SellingNet Selling
CMPR0.05%99.95%Net SellingNet Selling
ZD0.12%10.58%Net SellingNet Selling

Magnite Stock Ownership FAQ

Who owns Magnite?

Magnite (NASDAQ: MGNI) is owned by 0.10% institutional shareholders, 27.77% Magnite insiders, and 72.13% retail investors. Sumant Mandal is the largest individual Magnite shareholder, owning 17.10M shares representing 11.92% of the company. Sumant Mandal's Magnite shares are currently valued at $407.21M.

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