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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
Esther RajaveluChief Executive Officer Chief Financial Officer and Chief Business Officer2025-11-0740,270$2.37
$95.44kSell
Ankit MahadeviaDirector2025-08-286,572$1.97
$12.95kSell
Timothy KeutzerChief Operating Officer2025-08-281,695$1.97
$3.34kSell
Ankit MahadeviaDirector2025-02-0513,959$0.78
$10.89kSell
Ankit MahadeviaDirector2025-02-0555,260$0.78
$43.10kSell
Esther RajaveluCFO CBO2025-02-0520,689$0.78
$16.14kSell
Sath ShuklaCEO President2025-02-056,139$0.78
$4.79kSell
Sath ShuklaCEO President2025-02-0542,786$0.78
$33.37kSell
Timothy KeutzerChief Operating Officer2025-02-053,974$0.78
$3.10kSell
Sath ShuklaCEO President2025-02-05106,408$0.78
$83.00kSell

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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 LLC20.60%11,606,674$26.93MInsider
Gsk PLC16.31%9,190,606$21.32MInsider
Glaxosmithkline PLC6.72%3,788,012$8.79MInsider
Jean Francois Formela4.27%2,408,128$5.59MInsider
Pfizer Inc4.19%2,362,348$5.48MInstitution
Vanguard Group Inc3.53%1,989,855$4.62MInstitution
Vikas Goyal3.29%1,854,006$4.30MInsider
Sath Shukla3.08%1,736,883$4.03MInsider
Anson Funds Management LP2.85%1,603,569$3.72MInstitution
Renaissance Technologies LLC2.58%1,452,765$3.37MInstitution

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SPRO vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
SPRO20.08%63.90%Net SellingNet Selling
FATE54.16%45.84%Net Buying
ATRA14.04%85.96%Net BuyingNet Selling
CNTB2.90%0.00%
NKTX62.03%37.97%Net Selling
View Top Biotech Stocks

Spero Therapeutics Stock Ownership FAQ

Who owns Spero Therapeutics?

Spero Therapeutics (NASDAQ: SPRO) is owned by 20.08% institutional shareholders, 63.90% Spero Therapeutics insiders, and 16.02% retail investors. Aquilo Capital Management LLC is the largest individual Spero Therapeutics shareholder, owning 11.61M shares representing 20.60% of the company. Aquilo Capital Management LLC's Spero Therapeutics shares are currently valued at $26.58M.

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