Offerings // AGENUS INC

AGEN offering history

Every offering-related filing in AGENUS INC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to Feb 24, 2014.

Last executed offering

Jul 13, 2026

8-K — priced deal (shares or notes)

Last registration (announced)

Jul 20, 2026

S-3 — 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 27, 2026	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jul 20, 2026	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jul 13, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 16, 2026	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 29, 2025	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
May 30, 2025	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
May 12, 2025	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Feb 26, 2025	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Nov 27, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Aug 8, 2024	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 7, 2024	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 18, 2024	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Jun 23, 2023	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Dec 23, 2022	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Dec 2, 2022	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Mar 1, 2022	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Nov 12, 2021	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jul 22, 2020	S-3ASR →	REGISTERED	Automatic shelf registration — effective immediately (large filers)
Jun 22, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Feb 24, 2020	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Nov 22, 2019	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Oct 25, 2019	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Dec 21, 2018	RW →	WITHDRAWN	Registration withdrawn
Dec 20, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Dec 19, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 10, 2018	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 8, 2018	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Oct 11, 2018	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
May 11, 2018	424B5 →	EXECUTED	Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jan 24, 2018	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Jan 19, 2018	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Nov 9, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Oct 30, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Oct 18, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
Mar 31, 2017	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin
Mar 16, 2017	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Feb 16, 2017	S-3/A →	REGISTERED	S-3/A registration — capacity to sell shares, not a sale yet
Feb 14, 2017	8-K →	EXECUTED	Unregistered share sale disclosed (8-K item 3.02)
Jan 20, 2017	S-3 →	REGISTERED	S-3 registration — capacity to sell shares, not a sale yet
May 17, 2016	EFFECT →	EFFECTIVE	SEC declared a registration effective — selling can begin

AGEN 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.

Is a shelf active now? →Do they need money? →Red flags →Full AGEN workspace →

AGEN offering FAQ

When did AGEN last execute an offering?

Per SEC filings, AGENUS INC's most recent priced offering document is a 8-K filed 2026-07-13. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did AGEN last announce or register an offering?

The most recent registration is a S-3 filed 2026-07-20. 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.