Welcome to our dedicated page for SOLUNA HOLDINGS SEC filings (Ticker: SLNHP), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Soluna Holdings, Inc. filings document material events, project agreements, capital-structure disclosures, and governance matters for a renewable-powered data center operator with common stock and 9.0% Series A Cumulative Perpetual Preferred Stock outstanding. The filing record includes Form 8-K disclosures for Regulation FD releases, customer and hosting arrangements, and material definitive agreements involving data center projects.
Recent filings describe Soluna Digital Inc., a wholly owned subsidiary, acquiring full ownership of the Dorothy 1A project company, which owns a wind-powered data center campus in Silverton, Texas focused on bitcoin hosting. They also disclose related securities purchase and promissory note arrangements, preferred stock listing information for SLNHP, and formal exhibits used to report partnerships, project capacity, financing, and operating developments.
Generate Strategic Credit Master Fund I-B, L.P. and three affiliated entities jointly filed a Schedule 13G reporting shared beneficial ownership of 3,345,829 shares of Soluna Holdings, Inc. common stock, representing 9.99% of the class on a post-exercise basis. The shares are issuable upon exercise of warrants held by Generate Master Fund; a beneficial ownership limitation of 9.99% caps additional issuance and excludes 654,171 shares from this filing. The reporting group is organized in Delaware and states the filing is not an admission of beneficial ownership under Sections 13(d)/(g).
Soluna Holdings, Inc. reported that it has scheduled the groundbreaking of Project Kati, described as the company’s largest facility to date.
The company communicated this milestone through a press release dated September 11, 2025, which is furnished as an exhibit under a Regulation FD disclosure and is not treated as filed for liability purposes under federal securities laws.
Soluna Holdings, Inc. filed a current report to share that on September 9, 2025 it issued a press release with previously unreported corporate and operational information that it regularly posts on its website. The press release is attached as Exhibit 99.1 and is incorporated by reference in this report, but will not be treated as filed for liability purposes under the Securities Exchange Act or automatically included in other securities filings unless specifically incorporated.
Soluna Holdings director Matthew E. Lipman received a grant of 99,679 restricted stock awards on 09/01/2025. The awards are shares of Common Stock granted at a $0 purchase price and bring the reporting person’s total beneficial ownership to 292,328 shares. The Compensation Committee approved the grant. The restricted shares are structured to vest 100% upon the reporting person’s separation from the issuer. The Form 4 was signed on 09/02/2025 by an attorney-in-fact.
Soluna Holdings, Inc. (SLNH) reported a grant of 116,579 restricted stock awards to reporting person David C. Michaels, who is identified as both a director and the Chief Financial Officer. The awards were approved by the Compensation Committee and were granted on 09/01/2025 at a price of $0. After the grant, the reporting person beneficially owned 379,582 shares of common stock. The restricted shares are structured to vest 100% upon the reporting person’s separation from the issuer. The Form 4 was signed on behalf of the reporting person by an attorney-in-fact on 09/02/2025.
Thomas J. Marusak, a director of Soluna Holdings, Inc. (ticker SLNH), was granted 116,579 restricted shares of common stock on 09/01/2025 as approved by the Compensation Committee. The award carries a $0 per-share price and will vest in three tranches: 33% on 09/01/2026, 33% on 09/01/2027, and 34% on 09/01/2028, each tranche subject to continued service through the applicable vesting date. After the grant, the reporting person beneficially owns 347,818 shares. The Form 4 was signed on behalf of the reporting person by an attorney-in-fact on 09/02/2025.
Jessica L. Thomas, Chief Accounting Officer of Soluna Holdings, Inc. reported a grant of 32,899 restricted stock awards of Common Stock on 09/01/2025. The awards were approved by the Compensation Committee and carry a $0 per-share price. The restricted shares vest in three tranches: 33% on 09/01/2026, 33% on 09/01/2027, and 34% on 09/01/2028, each contingent on continued service through the applicable vesting date. Following the grant, the reporting person beneficially owns 112,501 shares of Common Stock, held in a direct ownership form.
Soluna Holdings, Inc. (SLNH) Form 4 shows Michael Toporek, a director, was granted 1,003,176 restricted stock awards of common stock on 09/01/2025. The awards were approved by the Compensation Committee and reported at a $0 price. After the grant, the reporting person beneficially owned 2,927,668 shares. The restricted shares will vest 100% upon the reporting person’s separation from the issuer. The form was signed by an attorney-in-fact on 09/02/2025.
Edward R. Hirshfield, a director of Soluna Holdings, Inc., reported two grants of restricted common stock on 09/01/2025. One grant totaled 66,453 shares that, per the filing, will vest 100% upon the reporting person’s separation from the company. A second grant totaled 33,226 shares with time-based vesting of 33% on 09/01/2026, 33% on 09/01/2027, and 34% on 09/01/2028, contingent on continued service. Both awards were approved by the Compensation Committee and reported with a transaction price of $0. Following the reported transactions, the filing shows the reporting person beneficially owned 258,018 shares after the first grant line and 291,244 shares after the second line.
Mary Jennifer OReilly, Chief People Officer of Soluna Holdings, Inc., was granted 99,679 restricted stock awards on 09/01/2025, as approved by the Compensation Committee. The award was reported at a $0 per-share price and increases the reporting person’s beneficial ownership to 292,200 shares. The restricted shares vest in three tranches: 33% on 09/01/2026, 33% on 09/01/2027 and 34% on 09/01/2028, each tranche contingent on continued service. The Form 4 filing bears a signature by an attorney-in-fact on 09/02/2025.