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.
Soluna Holdings, Inc. reporting person John Belizaire, who is listed as both Chief Executive Officer and a director, received a grant of 416,394 restricted shares of Common Stock on 09/01/2025. The award was approved by the Compensation Committee and vests in three annual tranches: 33% on 09/01/2026, 33% on 09/01/2027 and 34% on 09/01/2028, each contingent on continued service. Following the grant, the reporting person beneficially owns 1,221,700 shares. The Form 4 was signed by an attorney-in-fact on 09/02/2025.
Phelan William P, a director of Soluna Holdings, Inc. (ticker shown as SLNH in the filing), was granted 133,560 restricted stock awards of Common Stock on 09/01/2025. The grant price is reported as $0. After the grant the reporting person beneficially owned 402,083 shares. The restricted shares "will vest 100% upon the reporting person's separation from the issuer," per the filing. The Form 4 was signed by Christopher Gandolfo, Attorney in Fact, on 09/02/2025. The filing lists the reporting person's address as C/O Soluna Holdings, Inc., Albany, NY.
Soluna Holdings, Inc. (SLNHP) director John Bottomley received an award of 99,679 restricted shares of common stock on 09/01/2025, approved by the Compensation Committee. The award was granted at no cash price and increases his beneficial ownership to 292,084 shares. The restricted shares are scheduled 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 director William Hazelip received a grant of 99,679 restricted stock awards on 09/01/2025, increasing his reported beneficial ownership to 291,384 shares of Common Stock. The awards were approved by the Compensation Committee and carry a reported price of $0. The restricted shares are structured to vest 100% upon the reporting person9s separation from the issuer. The Form 4 was signed by an attorney-in-fact on 09/02/2025 and reports the transaction as a non-derivative acquisition under Section 16.
The company may offer and sell additional common stock with an aggregate offering price of up to $8,585,280 through H.C. Wainwright & Co. under an at-the-market program. This prospectus supplement updates a prior prospectus to reflect the current limit on shares eligible to be sold under General Instruction I.B.6 of Form S-3.
As of September 2, 2025, the public float was $37,005,840, based on 24,507,179 shares of common stock held by non-affiliates at a price of $1.51 per share as of July 11, 2025. During the 12 months prior to this supplement, the company sold securities with an aggregate market value of $3,750,000 under the same instruction, and has sold 5,208,487 shares under the existing sales agreement. The common stock trades on the Nasdaq Capital Market under the symbol SLNH.
Soluna Holdings, Inc. reported that it has reached a key milestone of one gigawatt of clean computing projects that are in operation, under construction, or in development. This scale is intended to position the company as a leader in sustainable data center development in the United States, reflecting its focus on pairing computing capacity with clean energy resources. The update was shared via a press release furnished under a Regulation FD disclosure, meaning it is provided for informational purposes to the market without being treated as a formal, filed financial statement.
Soluna Holdings, Inc. has filed a Form S-8 to register additional shares of its common stock for issuance under its equity incentive plans. The filing covers 1,489,460 additional shares available under the Third Amended and Restated 2021 Stock Incentive Plan, based on the shares outstanding on July 1, 2025 pursuant to the plan’s 2021 Limitation of Grant Provision. It also registers 1,554,930 additional shares available under the Amended and Restated 2023 Stock Incentive Plan, calculated under the 2023 Limitation of Grant Provision using the same July 1, 2025 share count. These shares are the same class of common stock previously registered on earlier S-8 filings, and the company incorporates its recent 10-K, 10-Qs, 8-Ks, and proxy statement by reference.
Soluna Holdings, Inc. reported the results of its Annual Meeting of Stockholders held on August 18, 2025. Stockholders elected two Class II directors, David C. Michaels and Matthew Lipman, to serve three-year terms until the 2028 annual meeting, with Michaels receiving 6,402,256 votes in favor and Lipman receiving 6,364,245 votes in favor.
Stockholders approved a reverse stock split authorization, permitting one or more reverse splits of the outstanding common stock at a ratio between 1-for-5 and 1-for-50, to be implemented at the board’s discretion within one year, with 9,702,027 votes for and 1,479,079 against. They also approved an adjournment authority related to the reverse split, with 10,295,007 votes for, and ratified the appointment of UHY LLP as independent registered public accounting firm for the year ending December 31, 2025, with 10,626,386 votes for.
Soluna Holdings, Inc. furnished an update on its recent performance by issuing a press release with financial results for the quarter ended June 30, 2025. The release was issued on August 15, 2025 and is attached as Exhibit 99.1.
The company also made an updated investor presentation available on its investor relations website, attached as Exhibit 99.2. Both exhibits are provided under Items 2.02 and 7.01 of this report and are furnished to regulators rather than formally filed or incorporated into other securities filings unless specifically referenced.
Soluna Holdings disclosed an expanded partnership with Galaxy Digital Inc. The company announced the development via a press release attached as Exhibit 99.1 and incorporated by reference into this report.
The filing specifies that the Item 7.01 disclosure and Exhibit 99.1 are being furnished, not filed, and therefore will not be treated as "filed" for the purposes of Section 18 of the Exchange Act or incorporated by reference into other filings unless expressly stated. The registrant lists its publicly registered securities as common stock (SLNH) and 9.0% Series A Cumulative Perpetual Preferred Stock (SLNHP), each traded on The Nasdaq Stock Market LLC.