Every S-3 that Soluna Holdings, Inc 9.0% Series A Cumulative Perpetual Preferred Stock (SLNHP) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A S-3 covers the shelf registration that lets an established company sell over time, so if you follow SLNHP and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full SLNHP filings page.
Soluna Holdings, Inc. registers 2,459,400 shares of common stock for resale by selling stockholders, consisting of 2,400,000 Warrant Shares issuable upon exercise of a warrant issued to YA II PN, LTD. and 59,400 Merger Shares issued or issuable to Harmattan Energy, Ltd.
This is a resale (secondary) registration on Form S-3; the company will not receive any proceeds from sales of the registered shares. The prospectus discloses 141,347,055 shares outstanding as of April 24, 2026 and lists recent transactions including project acquisitions and related financing commitments disclosed in the filing.
Soluna Holdings, Inc. (SLNH) filed Amendment No. 1 to its registration statement (File No. 333-294152) as an exhibits-only pre-effective amendment dated March 30, 2026. The amendment updates and files an auditor consent (Exhibit 23.1); the prospectuses are unchanged and omitted.
Soluna Holdings, Inc. filed a shelf registration to offer up to $1,000,000,000 of securities, as reflected in the base prospectus subject to completion, dated March 9, 2026. The shelf explicitly includes $500 million of common stock available under a sales agreement.
The shelf covers common stock, preferred stock, warrants, debt securities, subscription rights and units. Common stock and Series A Preferred Stock trade on Nasdaq under SLNH and SLNHP; last reported sale prices on March 6, 2026 were $0.77 and $9.49, respectively. Shares issued and outstanding as of March 6, 2026: common 110,827,939, Series A Preferred 4,920,045, Series B Preferred 62,500.