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NASDAQ: SPRO
Spero Therapeutics Inc Stock Ownership - Who owns Spero Therapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Spero Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Timothy KeutzerChief Operating Officer2025-08-281,695$1.97
$3.34kSell
Ankit MahadeviaDirector2025-08-286,572$1.97
$12.95kSell
Timothy KeutzerChief Operating Officer2025-02-0524,920$0.78
$19.44kSell
Ankit MahadeviaDirector2025-02-0513,959$0.78
$10.89kSell
Ankit MahadeviaDirector2025-02-0555,260$0.78
$43.10kSell
Sath ShuklaCEO President2025-02-05106,408$0.78
$83.00kSell
Timothy KeutzerChief Operating Officer2025-02-0527,643$0.78
$21.56kSell
Sath ShuklaCEO President2025-02-0542,786$0.78
$33.37kSell
Timothy KeutzerChief Operating Officer2025-02-053,974$0.78
$3.10kSell
Esther RajaveluCFO CBO2025-02-0520,689$0.78
$16.14kSell

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Net Insider Buy/Sell (L12M) Ownership

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SPRO Shareholders

What type of owners hold Spero Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Aquilo Capital Management LLC20.62%11,606,674$22.05MInsider
Gsk PLC16.33%9,190,606$17.46MInsider
Glaxosmithkline PLC6.73%3,788,012$7.20MInsider
Jean Francois Formela4.28%2,408,128$4.58MInsider
Pfizer Inc4.20%2,362,348$4.49MInstitution
Vanguard Group Inc3.47%1,950,381$3.71MInstitution
Vikas Goyal3.29%1,854,006$3.52MInsider
Sath Shukla3.09%1,736,883$3.30MInsider
Anson Funds Management LP2.87%1,615,469$3.07MInstitution
Casper Breum1.94%1,091,774$2.07MInsider

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SPRO vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SPRO19.69%64.04%Net SellingNet Selling
ACHV72.33%27.67%Net SellingNet Selling
ARMP0.89%99.11%Net SellingNet Selling
ZNTL63.88%36.12%Net Buying
ADAG10.30%0.00%
View Top Biotech Stocks

Spero Therapeutics Stock Ownership FAQ

Who owns Spero Therapeutics?

Spero Therapeutics (NASDAQ: SPRO) is owned by 19.69% institutional shareholders, 64.04% Spero Therapeutics insiders, and 16.27% retail investors. Aquilo Capital Management LLC is the largest individual Spero Therapeutics shareholder, owning 11.61M shares representing 20.62% of the company. Aquilo Capital Management LLC's Spero Therapeutics shares are currently valued at $22.05M.

If you're new to stock investing, here's how to buy Spero Therapeutics stock.
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