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NASDAQ: PTGX
Protagonist Therapeutics Inc Stock Ownership - Who owns Protagonist Therapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Protagonist Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
William D. WaddillDirector2026-06-103,000$11.80
$35.40kBuy
William D. WaddillDirector2026-06-109,000$107.68
$969.12kSell
William D. WaddillDirector2026-06-106,000$16.54
$99.24kBuy
William D. WaddillDirector2026-05-299,000$99.64
$896.76kSell
William D. WaddillDirector2026-05-299,000$11.80
$106.20kBuy
Dinesh V. Ph D. PatelPresident and CEO2026-05-1275,000$100.12
$7.51MSell
Dinesh V. Ph D. PatelPresident and CEO2026-05-1275,000$100.12
$7.51MSell
Dinesh V. Ph D. PatelPresident and CEO2026-05-1275,000$21.58
$1.62MBuy
Dinesh V. Ph D. PatelPresident and CEO2026-05-1275,000$21.58
$1.62MBuy
Dinesh V. Ph D. PatelPresident and CEO2026-05-1275,000$100.12
$7.51MSell

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Net Insider Buy/Sell (L12M) Ownership

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PTGX Shareholders

What type of owners hold Protagonist Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc15.21%9,779,369$1.10BInstitution
Farallon Capital Management LLC9.87%6,348,906$714.00MInstitution
Ubs Group Ag8.05%5,177,796$582.29MInstitution
Rtw Investments LP7.87%5,059,053$568.94MInstitution
Wellington Management Group LLP5.60%3,599,644$404.82MInstitution
Vanguard Portfolio Management LLC5.41%3,481,211$391.50MInstitution
State Street Corp4.85%3,116,749$350.51MInstitution
Janus Henderson Group PLC4.50%2,891,527$325.18MInstitution
Vanguard Capital Management LLC4.36%2,805,896$315.55MInstitution
Julie Papanek3.81%2,453,255$275.89MInsider

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PTGX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PTGX84.37%15.63%Net SellingNet Selling
PCVX88.99%11.01%Net SellingNet Selling
PRAX69.33%30.67%Net SellingNet Buying
IBRX16.99%7.31%Net BuyingNet Buying
KYMR78.23%21.77%Net BuyingNet Selling
View Top Biotech Stocks

Protagonist Therapeutics Stock Ownership FAQ

Who owns Protagonist Therapeutics?

Protagonist Therapeutics (NASDAQ: PTGX) is owned by 122.44% institutional shareholders, 22.68% Protagonist Therapeutics insiders, and 0.00% retail investors. Julie Papanek is the largest individual Protagonist Therapeutics shareholder, owning 2.45M shares representing 3.81% of the company. Julie Papanek's Protagonist Therapeutics shares are currently valued at $271.43M.

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