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Offerings // Cyngn Inc.

CYN offering history

Every offering-related filing in Cyngn Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 244 filings back to Jul 28, 2021.

Last executed offering
Mar 17, 2026
424B5 — priced deal (shares or notes)
Last registration (announced)
Sep 5, 2025
S-3 — capacity, not a sale
Executed, last 12 months
1
424B pricings + 8-K 3.02 sales
Registered, last 12 months
1
S-1/S-3/F-series registrations
DateFilingWhat it means
Mar 17, 2026424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 18, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Sep 5, 2025S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Jun 30, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 27, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 31, 2024424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Dec 23, 2024424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Dec 19, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Dec 18, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Dec 6, 2024424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Dec 6, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Nov 27, 2024S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Nov 25, 2024S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Nov 12, 20248-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Apr 24, 2024424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Apr 23, 2024S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Apr 23, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Apr 12, 2024S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Dec 11, 2023424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Dec 7, 2023EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Dec 5, 2023S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Nov 28, 2023S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Nov 14, 2023S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Jun 15, 2023424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jun 13, 2023EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
May 31, 2023S-3/A →REGISTEREDS-3/A registration — capacity to sell shares, not a sale yet
May 2, 2023S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Jan 20, 2023424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jan 18, 2023EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
May 17, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 17, 2022EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
May 12, 2022S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Apr 29, 20228-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Oct 21, 2021424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Oct 19, 2021EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Oct 15, 2021S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Oct 12, 2021FWP →MARKETINGFree-writing prospectus — offering being marketed
Sep 30, 2021S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Sep 3, 2021S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
CYN 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 CYN workspace →
CYN offering FAQ

When did CYN last execute an offering?

Per SEC filings, Cyngn Inc.'s most recent priced offering document is a 424B5 filed 2026-03-17. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did CYN last announce or register an offering?

The most recent registration is a S-3 filed 2025-09-05. 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.