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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
Lewis T. WilliamsDirector2026-02-1718,000$82.42
$1.48MSell
Lewis T. WilliamsDirector2026-02-1718,000$10.84
$195.12kBuy
William D. WaddillDirector2026-02-0620,000$8.31
$166.20kBuy
William D. WaddillDirector2026-02-0620,000$83.68
$1.67MSell
Asif AliChief Financial Officer2026-01-2718,203$83.14
$1.51MSell
Dinesh V. Ph D. PatelPresident and CEO2026-01-274,068$21.58
$87.79kBuy
Asif AliChief Financial Officer2026-01-2716,000$19.19
$307.04kBuy
Asif AliChief Financial Officer2026-01-2712,000$12.17
$146.04kBuy
Asif AliChief Financial Officer2026-01-2728,000$83.13
$2.33MSell
Dinesh V. Ph D. PatelPresident and CEO2026-01-274,068$83.19
$338.42kSell

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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 Inc15.23%9,715,999$897.37MInstitution
Farallon Capital Management LLC9.63%6,144,006$567.46MInstitution
Vanguard Group Inc8.48%5,413,690$500.01MInstitution
Rtw Investments LP7.93%5,059,053$467.25MInstitution
State Street Corp5.01%3,199,729$295.53MInstitution
Wellington Management Group LLP4.97%3,171,423$292.91MInstitution
Ubs Group Ag4.34%2,770,021$255.84MInstitution
Janus Henderson Group PLC4.15%2,649,981$244.75MInstitution
Julie Papanek3.84%2,453,255$226.58MInsider
Johnson Johnson3.84%2,449,183$226.21MInsider

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PTGX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PTGX82.84%17.16%Net SellingNet Selling
RYTM88.72%11.28%Net SellingNet Selling
COGT92.60%7.40%Net SellingNet Selling
MIRM53.75%46.25%Net BuyingNet Buying
CGON85.41%14.59%Net BuyingNet Buying
View Top Biotech Stocks

Protagonist Therapeutics Stock Ownership FAQ

Who owns Protagonist Therapeutics?

Protagonist Therapeutics (NASDAQ: PTGX) is owned by 110.84% institutional shareholders, 22.96% Protagonist Therapeutics insiders, and 0.00% retail investors. Julie Papanek is the largest individual Protagonist Therapeutics shareholder, owning 2.45M shares representing 3.84% of the company. Julie Papanek's Protagonist Therapeutics shares are currently valued at $226.58M.

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