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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
Asif AliCFO2026-09-309,229$38.98
$359.75kBuy
Asif AliCFO2026-09-3046,034$141.78
$6.53MSell
Asif AliCFO2026-09-3012,595$141.77
$1.79MSell
Asif AliCFO2026-09-305,312$12.17
$64.65kBuy
Asif AliCFO2026-09-3015,650$19.19
$300.32kBuy
Asif AliCFO2026-09-3028,438$23.42
$666.02kBuy
Dinesh V. Ph D. PatelCEO;Pres2026-09-107,278$144.10
$1.05MSell
Dinesh V. Ph D. PatelCEO;Pres2026-09-107,278$21.58
$157.06kBuy
Dinesh V. Ph D. PatelCEO;Pres2026-09-0963,548$146.18
$9.29MSell
Dinesh V. Ph D. PatelCEO;Pres2026-09-0963,548$21.58
$1.37MBuy

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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
Julie Papanek3.79%2,453,255$355.35MInsider
Johnson Johnson3.78%2,449,183$354.76MInsider
Canaan X LP3.27%2,116,552$306.58MInsider
LV Management Group LLC3.24%2,099,482$304.11MInsider
Armen Shanafelt3.24%2,099,482$304.11MInsider
Adage Capital Partners GP LLC3.18%2,056,076$297.82MInsider
Dinesh V. Ph D. Patel0.81%522,968$75.75MInsider
Suneel Gupta0.41%267,433$38.74MInsider
David Y. Liu0.26%167,590$24.28MInsider
Arturo Md Molina0.13%84,115$12.18MInsider

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PTGX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
PTGX0.12%22.54%Net SellingNet Buying
TGTX0.07%48.64%Net SellingNet Selling
PCVX0.11%13.61%Net SellingNet Selling
CAI0.05%81.85%Net BuyingNet Buying
KRYS0.10%25.15%Net SellingNet Selling
View Top Biotech Stocks

Protagonist Therapeutics Stock Ownership FAQ

Who owns Protagonist Therapeutics?

Protagonist Therapeutics (NASDAQ: PTGX) is owned by 0.12% institutional shareholders, 22.54% Protagonist Therapeutics insiders, and 77.35% retail investors. Julie Papanek is the largest individual Protagonist Therapeutics shareholder, owning 2.45M shares representing 3.79% of the company. Julie Papanek's Protagonist Therapeutics shares are currently valued at $355.35M.

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