NASDAQ: IBIO
Ibio Inc Stock Ownership - Who owns Ibio?

Insider buying vs selling

Have Ibio Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Marc BanjakChief Legal Officer2026-03-2612,500$1.64
$20.54kBuy
Marc BanjakChief Legal Officer2026-03-261,434$1.76
$2.52kBuy
Martin BrennerChief Executive Officer and Chief Scientific Officer2026-03-1912,336$2.02
$24.92kBuy
Felipe DuranChief Financial Officer2026-03-1924,835$2.02
$50.14kBuy

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Net Insider Buy/Sell (L12M) Ownership

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IBIO Shareholders

What type of owners hold Ibio Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
E. Gerald Kay42.78%14,776,201$23.94MInsider
Eastern Capital Ltd24.98%8,629,693$13.98MInsider
Carl Desantis16.65%5,751,143$9.32MInsider
John D. McKey Jr.6.62%2,288,133$3.71MInsider
Ecor1 Capital LLC6.45%2,228,000$3.61MInstitution
Affinity Asset Advisors LLC5.96%2,057,200$3.33MInstitution
Logos Global Management LP5.79%2,000,000$3.24MInstitution
Frazier Life Sciences Management LP5.66%1,953,467$3.16MInstitution
Thomas Francis 3rd Isett3.69%1,275,000$2.07MInsider
Balyasny Asset Management LP3.17%1,096,179$1.78MInstitution

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IBIO vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IBIO32.08%67.92%Net BuyingNet Buying
GRML3.66%14.10%
CING4.41%37.95%Net BuyingNet Buying
OKYO0.12%99.88%
INKT0.63%99.37%Net BuyingNet Selling

Ibio Stock Ownership FAQ

Who owns Ibio?

Ibio (NASDAQ: IBIO) is owned by 47.30% institutional shareholders, 100.16% Ibio insiders, and 0.00% retail investors. E. Gerald Kay is the largest individual Ibio shareholder, owning 14.78M shares representing 42.78% of the company. E. Gerald Kay's Ibio shares are currently valued at $24.97M.

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