Offerings // Solid Power, Inc.

SLDPW offering history

Every offering-related filing in Solid Power, Inc.’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 477 filings back to Feb 12, 2021.

Last executed offering
Jan 29, 2026
424B5 — priced deal (shares or notes)
Last registration (announced)
Sep 5, 2025
S-3ASR — capacity, not a sale
Executed, last 12 months
1
424B pricings + 8-K 3.02 sales
Registered, last 12 months
0
S-1/S-3/F-series registrations
DateFilingWhat it means
Jan 29, 2026424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 5, 2025S-3ASR →REGISTEREDAutomatic shelf registration — effective immediately (large filers)
Sep 5, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 18, 2023424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 18, 2023EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Feb 13, 2023424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Dec 21, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Dec 2, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Nov 29, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Nov 21, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Nov 9, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Aug 10, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jul 18, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jul 13, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jun 28, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 26, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 11, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 6, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Apr 6, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Apr 5, 2022EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Mar 21, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Feb 14, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jan 18, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Dec 28, 2021424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Dec 28, 2021EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Dec 17, 2021S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Dec 13, 20218-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Nov 10, 2021424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Nov 10, 2021EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Oct 28, 20218-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Jun 15, 20218-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Mar 26, 20218-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Mar 25, 2021424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Mar 23, 2021EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Mar 15, 2021S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Mar 1, 2021S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Feb 12, 2021S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
SLDPW 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 SLDPW workspace →
SLDPW offering FAQ

When did SLDPW last execute an offering?

Per SEC filings, Solid Power, Inc.'s most recent priced offering document is a 424B5 filed 2026-01-29. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did SLDPW last announce or register an offering?

The most recent registration is a S-3ASR 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.

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