Protagonist Therapeutics

PTGX

Market cap $4.74B

PTGX shares jump 30% after reports that J&J is in talks to acquire the biotech firm amid ongoing negotiations.

Johnson & Johnson (JNJ) is rumored to be in talks to acquire Protagonist Therapeutics (PTGX), following significant buyout speculation and a 30% PTGX stock surge. PTGX's value is underpinned by its oral immunology drug icotrokinra and blockbuster potential of rusfertide for polycythemia vera, both with strong partnership structures. A JNJ acquisition could save milestone payments, secure future royalties, and add derisked, late-stage assets to JNJ's portfolio, supporting long-term growth.

Clinical-stage biotech Protagonist Therapeutics (PTGX 29.76%) was all the rage on the stock market Friday. The company's share price closed a dizzying 29.8% higher on the day, thanks to intense takeover speculation.

Rod Wong, RTW Investments CIO & Managing Director, joins CNBC's 'Money Movers' to discuss J&J's reported interest in buying Protagonist Therapeutics, whether he expects more consolidation in the sector, and much more.

Johnson & Johnson (NYSE:JNJ) is reportedly in discussions to acquire Protagonist Therapeutics (NASDAQ:PTGX).

Johnson & Johnson is in discussions to buy Protagonist Therapeutics , the Wall Street Journal reported on Friday, citing people familiar with the matter.

The two companies are already codeveloping a treatment for ulcerative colitis.

Protagonist Therapeutics, Inc. (NASDAQ:PTGX ) H.C. Wainwright 27th Annual Global Investment Conference September 9, 2025 11:30 AM EDT Company Participants Dinesh Patel - CEO, President, Secretary & Director Conference Call Participants Douglas Tsao - H.C.

Protagonist Therapeutics, Inc. (NASDAQ:PTGX ) Citi's Biopharma Back to School Conference September 3, 2025 9:45 AM EDT Company Participants Dinesh Patel - CEO, President, Secretary & Director Conference Call Participants Geoffrey Meacham - Citigroup Inc., Research Division Presentation Geoffrey Meacham Managing Director Welcome to the second day of the Citi Biopharma Back to School Summit. I'm Geoff Meacham.

NEWARK, CALIFORNIA / ACCESS Newswire / August 26, 2025 / Protagonist Therapeutics, Inc. ("Protagonist" or the "Company") today announced that Dinesh V. Patel, Ph.D.