Protagonist Therapeutics, Inc. (PTGX) Research

Protagonist Therapeutics, Inc. is a biopharmaceutical firm dedicated to discovering and advancing peptide-based therapies. Their research primarily focuses on treatments for hematological and blood conditions, as well as inflammatory and immune-mediated disorders. The company's pipeline features rusfertide (PTG-300), an injectable hepcidin mimetic currently undergoing Phase II clinical trials for the management of polycythemia vera, hereditary hemochromatosis, and other blood-related ailments. Also in Phase II development is PN-943, an oral peptide engineered as a specific antagonist of alpha-4-beta-7 integrin, intended for addressing inflammatory bowel disease (IBD). Furthermore, they are progressing PN-235, an orally administered antagonist specifically targeting the interleukin-23 receptor, designed for both IBD and various non-IBD therapeutic applications. Protagonist Therapeutics maintains a licensing and collaborative agreement with Janssen Biotech, Inc. Founded in 2006, the company's headquarters are located in Newark, California.

Market snapshot

Symbol
PTGX
Price
$112.86
Day change
+1.27%
Market cap
$7.3B
P/E ratio
-64.04x
52-week range
49.38-114.485
Sector
Healthcare
Industry
Biotechnology
Next earnings
in 2 months
Analyst price target
$117.25

Peer companies

  • Arcellx, Inc. (ACLX)
  • Akero Therapeutics, Inc. (AKRO)
  • Alkermes plc (ALKS)
  • Crinetics Pharmaceuticals, Inc. (CRNX)
  • Immunovant, Inc. (IMVT)
  • Kymera Therapeutics, Inc. (KYMR)
  • NewAmsterdam Pharma Company N.V. (NAMS)
  • PTC Therapeutics, Inc. (PTCT)

Recent insider activity

  • Waddill William D. — M-Exempt (6000 shares) on 2026-06-10
  • Waddill William D. — M-Exempt (3000 shares) on 2026-06-10
  • Waddill William D. — M-Exempt (6000 shares) on 2026-06-10
  • Waddill William D. — S-Sale (9000 shares) on 2026-06-10
  • Waddill William D. — M-Exempt (3000 shares) on 2026-06-10

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