Protagonist Therapeutics, Inc. operates as a discovery and development company in the United States. It develops Icotyde, a first-in-class investigational targeted oral peptide for the treatment of adults and pediatric patients 12 years of age and older with moderate-to-severe plaque psoriasis; and Rusfertide, a first-in-class investigational injectable mimetic of the natural hormone hepcidin in Phase 3 development for the treatment of the rare blood disorder polycythemia vera. The company is also developing PN-881, a potential best-in-class oral peptide IL-17 antagonist, for the treatment of immune-mediated skin diseases in Phase 1 clinical trials; PN-477 and PN-458, which are development candidates for the treatment of obesity; PN-8047, an orally administered hepcidin functional mimetic small molecule; L-4R alpha antagonist for the treatment of atopic dermatitis and moderate-to-severe asthma; and amylinR-based oral and subcutaneous mono- and poly-agonists for the treatment of obesity. Protagonist Therapeutics, Inc. was incorporated in 2006 and is headquartered in Newark, California. Show more

7707 Gateway Boulevard, Newark, CA, 94560, United States

https://www.protagonist-inc.com

Biotechnology

Healthcare

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Market Cap

5.893B

52 Wk Range

$39.60 - $98.32

Previous Close

$92.36

Open

$93.28

Volume

695,757

Day Range

$92.60 - $97.08

Enterprise Value

5.341B

Cash

567.4M

Avg Qtr Burn

-36.98M

Insider Ownership

1.20%

Institutional Own.

Qtr Updated

12/31/25

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Drug & Indication	Stage & Event	Catalyst Date
Icotrokinra (JNJ-2113) (PN-235) Details Psoriasis	PDUFA Approval decision	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Rusfertide (PTG-300) Details Polycythemia vera	PDUFA Approval decision	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
ICOTYDE/Icotrokinra (JNJ-2113) (IL-23R Antagonist) Details Psoriatic Arthritis	Phase 3 Update	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Icotrokinra (JNJ-2113, formerly PN-235) Details Ulcerative colitis	Phase 2b Update	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
PN-881 (IL-17 Antagonist) Details Healthy Volunteers	Phase 1 Update	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
PN-477 Details Obesity	Phase 1 Initiation	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
PN-458 (Dual Incretin Agonist) Details Obesity	IND Submission	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
PN-943 (α4β7-Integrin Antagonist) Details Inflammatory bowel disease, Inflammatory disease	Failed Discontinued	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
Rusfertide (PTG-300) (Hepcidin Mimetic) Details Genetic disorder, Rare genetic disease	Failed Discontinued	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.
PTG-200 (IL-23R Antagonist) Details Crohns disease, Inflammatory bowel disease, Inflammatory disease	Failed Discontinued	Some catalyst date You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details. You must sign up to see the catalyst details.Sign up now.