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Offerings // Alpha Cognition Inc.

ACOG offering history

Every offering-related filing in Alpha Cognition Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 216 filings back to Oct 16, 2015.

Last executed offering
Oct 1, 2025
424B5 — priced deal (shares or notes)
Last registration (announced)
Aug 22, 2025
S-3 — capacity, not a sale
Executed, last 12 months
0
424B pricings + 8-K 3.02 sales
Registered, last 12 months
0
S-1/S-3/F-series registrations
DateFilingWhat it means
Oct 1, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 30, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 29, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Aug 29, 2025424B2 →EXECUTEDProspectus supplement priced — shares or notes (large filers: often a bond deal)
Aug 29, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Aug 22, 2025S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Aug 5, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jul 25, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jul 21, 2025S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Jul 17, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jul 8, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jul 1, 2025S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Jan 15, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jan 15, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jan 13, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jan 13, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jan 10, 2025S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Dec 31, 2024S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Dec 20, 20248-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Nov 18, 20248-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Nov 13, 2024424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Nov 12, 2024S-1MEF →REGISTEREDS-1MEF registration — capacity to sell shares, not a sale yet
Nov 8, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Nov 6, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Oct 25, 2024424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Oct 25, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Oct 23, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Oct 16, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Oct 16, 2024S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Sep 25, 20248-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Aug 15, 2024424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jul 30, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Jun 14, 2024S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Jun 10, 2024424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jun 7, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jun 4, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
May 22, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
May 10, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Apr 30, 2024S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
ACOG 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 ACOG workspace →
ACOG offering FAQ

When did ACOG last execute an offering?

Per SEC filings, Alpha Cognition Inc.'s most recent priced offering document is a 424B5 filed 2025-10-01. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did ACOG last announce or register an offering?

The most recent registration is a S-3 filed 2025-08-22. 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.

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