Offerings // Summit Therapeutics Inc.

SMMT offering history

Every offering-related filing in Summit Therapeutics Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 548 filings back to Mar 4, 2014.

Last executed offering

Jul 23, 2026

424B5 — priced deal (shares or notes)

Last registration (announced)

Jun 9, 2026

S-3ASR — capacity, not a sale

Executed, last 12 months

424B pricings + 8-K 3.02 sales

Registered, last 12 months

S-1/S-3/F-series registrations

Date	Filing		What it means
Jul 23, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 10, 2026	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 9, 2026	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 29, 2025	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Oct 22, 2025	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 11, 2025	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 19, 2024	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Sep 12, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 6, 2024	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jun 3, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 13, 2024	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Feb 27, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Feb 20, 2024	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Oct 16, 2023	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Apr 27, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 17, 2023	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 7, 2023	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Feb 3, 2023	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 23, 2023	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Dec 21, 2022	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jul 18, 2022	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Apr 21, 2021	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Jan 20, 2021	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Jan 19, 2021	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jan 8, 2021	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Nov 6, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Oct 15, 2020	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Oct 5, 2020	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jun 21, 2019	424B3 →	UPDATE	Prospectus update — often a resale registration, not necessarily new capital
Jun 20, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 12, 2019	F-3 →	REGISTERED	F-3 registration — capacity to sell shares, not a sale yet
May 29, 2018	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 15, 2018	F-3 →	REGISTERED	F-3 registration — capacity to sell shares, not a sale yet
Sep 14, 2017	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 13, 2017	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 3, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 26, 2016	F-3/A →	REGISTERED	F-3/A registration — capacity to sell shares, not a sale yet
May 12, 2016	F-3 →	REGISTERED	F-3 registration — capacity to sell shares, not a sale yet
Mar 5, 2015	424B4 →	EXECUTED	Final prospectus — offering priced (typical for IPOs and marketed share deals)
Mar 4, 2015	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin

SMMT offering-related filings from SEC EDGAR, newest first (capped at 40). Each links to the original document.

Two honest limits. (1) A 424B takedown can price shares or notes— EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.

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SMMT offering FAQ

When did SMMT last execute an offering?

Per SEC filings, Summit Therapeutics Inc.'s most recent priced offering document is a 424B5 filed 2026-07-23. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did SMMT last announce or register an offering?

The most recent registration is a S-3ASR filed 2026-06-09. A registration is capacity to sell shares — not a sale.

Does an offering always mean dilution?

Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.