Protagonist Therapeutics, Inc. (PTGX) Institutional Ownership & Insider Trading

345 institutions reported holding Protagonist Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 38 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

PTGXProtagonist Therapeutics, Inc.Follow PTGX — free

Biotechnology · Healthcare

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Market cap: 9.0B
P/E TTM: 135.7
Dividend yield: —
52-week: —
Next earnings: 4 Nov, in 11 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

345 institutions held —% of the shares. Across filers that reported both quarters, shares held changed -3.2%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	345	76	-3.2%	131	52	78	27
Mar 26	317	79	+10.4%	98	42	94	41
Dec 25	311	71	-0.3%	93	56	97	31
Sep 25	272	71	-0.0%	77	32	103	30
Jun 25	271	71	+9.0%	111	44	72	45
Mar 25	269	65	+2.0%	78	64	85	33
Dec 24	239	63	+2.2%	82	38	66	37
Sep 24	237	61	-3.8%	72	71	59	22

Protagonist Therapeutics, Inc. — questions

Who owns Protagonist Therapeutics, Inc. stock?: 345 institutions reported Protagonist Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (15.9%), FARALLON CAPITAL MANAGEMENT LLC (9.8%), RTW INVESTMENTS, LP (7.8%).
Are Protagonist Therapeutics, Inc. insiders buying or selling?: 38 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Protagonist Therapeutics, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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