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Offerings // Soluna Holdings, Inc

SLNH offering history

Every offering-related filing in Soluna Holdings, Inc’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,000 filings back to Apr 23, 2007.

Last executed offering
Apr 17, 2026
8-K — priced deal (shares or notes)
Last registration (announced)
Apr 29, 2026
S-3 — capacity, not a sale
Executed, last 12 months
7
424B pricings + 8-K 3.02 sales
Registered, last 12 months
8
S-1/S-3/F-series registrations
DateFilingWhat it means
May 11, 2026424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 8, 2026EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Apr 29, 2026S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Apr 22, 2026424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Apr 21, 2026EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Apr 20, 2026424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Apr 17, 20268-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Apr 17, 2026EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Apr 15, 2026S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Apr 15, 2026S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Apr 3, 20268-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Apr 1, 2026424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 30, 2026S-3/A →REGISTEREDS-3/A registration — capacity to sell shares, not a sale yet
Mar 30, 2026EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Mar 9, 2026S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Dec 5, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Nov 17, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Nov 12, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Oct 27, 2025S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Oct 16, 2025S-3/A →REGISTEREDS-3/A registration — capacity to sell shares, not a sale yet
Sep 26, 2025S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Sep 23, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Sep 16, 20258-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Sep 2, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jul 17, 2025424B4 →EXECUTEDFinal prospectus — offering priced (typical for IPOs and marketed share deals)
Jul 15, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jul 11, 2025S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Jun 16, 2025S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
May 22, 2025S-1 →REGISTEREDS-1 registration — capacity to sell shares, not a sale yet
Apr 29, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Apr 29, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Apr 25, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Apr 25, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Apr 18, 2025S-3 →REGISTEREDS-3 registration — capacity to sell shares, not a sale yet
Mar 27, 20258-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Feb 10, 20258-K →EXECUTEDUnregistered share sale disclosed (8-K item 3.02)
Feb 5, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Feb 5, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Feb 3, 2025S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
Jan 15, 2025S-1/A →REGISTEREDS-1/A registration — capacity to sell shares, not a sale yet
SLNH 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 SLNH workspace →
SLNH offering FAQ

When did SLNH last execute an offering?

Per SEC filings, Soluna Holdings, Inc's most recent priced offering document is a 8-K filed 2026-04-17. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did SLNH last announce or register an offering?

The most recent registration is a S-3 filed 2026-04-29. 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.