Summit Therapeutics Inc. (SMMT) Institutional Ownership & Insider Trading

242 institutions reported holding Summit Therapeutics Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 9 insider trades on Form 4 since 2025-10-01.

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

SMMTSummit Therapeutics Inc.Follow SMMT — free

Biotechnology · Healthcare

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Market cap: 12.3B
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 11 Nov, in 18 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

242 institutions held 17.0% of the shares. Across filers that reported both quarters, shares held changed +13.2%.

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	242	136	+13.2%	89	50	57	29
Mar 26	223	119	+1.6%	78	49	46	32
Dec 25	203	118	+13.1%	64	25	63	50
Sep 25	227	103	+7.0%	67	42	59	39
Jun 25	224	98	-1.4%	57	65	68	37
Mar 25	198	98	+5.8%	62	30	60	29
Dec 24	194	93	+9.1%	70	46	32	21
Sep 24	161	84	+18.5%	45	56	31	17

Summit Therapeutics Inc. — questions

Who owns Summit Therapeutics Inc. stock?: 242 institutions reported Summit Therapeutics Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BAKER BROS. ADVISORS LP (4.1%), FMR LLC (1.3%), STATE STREET CORP (1.2%).
Are Summit Therapeutics Inc. insiders buying or selling?: 9 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 Summit 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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