Welcome to our dedicated page for SOLUNA HOLDINGS SEC filings (Ticker: SLNH), 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 the company’s renewable-powered data-center business, capital structure, material agreements, and Nasdaq listing matters. Its Form 8-K reports include Regulation FD disclosures for customer deployments at Project Dorothy, partnership expansions for Bitcoin mining and AI workloads, and notices related to Nasdaq continued-listing compliance.
Soluna’s regulatory record also covers acquisition and financing activity, including membership interests in the Dorothy 1A Project Company and related promissory-note financing. Registration statements and current reports describe securities offered by selling holders, common stock, 9.0% Series A cumulative perpetual preferred stock, governance matters, and risk disclosures tied to its data-center and renewable-energy operations.
Soluna Holdings, Inc. entered into an Equipment Supply Agreement with Cormint Data Systems, a Texas-based data center infrastructure firm. The agreement supports a planned 12 MW deployment at Soluna’s Project Kati 1 site in Willacy County, Texas. Cormint has previously designed, delivered, and operated more than 130 MW of data center infrastructure, indicating substantial experience in large-scale deployments. The company disclosed this arrangement via a press release furnished under Regulation FD, which is attached as an exhibit and not treated as filed for liability purposes.
Soluna Holdings, Inc. reported a planned leadership transition in its finance organization. The company will accept interim CFO and Treasurer David Michaels’ resignation once a new CFO is in place, noting his decision was not due to any disagreement over operations, policies, or practices.
On January 19, 2026, Soluna appointed Michael Picchi as CFO and Treasurer, effective April 1, 2026. He will join on March 9, 2026 as Head of Finance. His offer provides a $375,000 annual base salary, a target annual bonus equal to 50% of base salary, and a contemplated grant of 1,281,850 RSUs subject to time-based vesting. If terminated without cause or if he resigns for good reason, he is eligible for six months of base salary, certain earned bonuses, partial RSU vesting, and up to six months of COBRA premium support, subject to a release of claims.
Soluna Holdings, Inc. reported that it signed a Memorandum of Understanding with Metrobloks, LLC, a data center developer and operator focused on AI-ready infrastructure, to enter into a co-development partnership to build Project Kati 2, also referred to as MB MFE-A. The arrangement is described in a press release dated January 15, 2026, which is attached as Exhibit 99.1.
The company states that this information is being provided under Regulation FD and will be treated as “furnished,” not “filed,” meaning it is not subject to certain liability provisions and will only be incorporated into other filings if specifically referenced.
Soluna Holdings, Inc. filed a current report to highlight that it issued a new corporate press release on January 13, 2026. The release, attached as Exhibit 99.1, contains previously unreported corporate and operational information that the company also publishes on its website. This information is being furnished under Regulation FD, meaning it is not deemed filed for liability purposes under the Exchange Act and will only be incorporated into other SEC reports if those reports expressly reference it.
Soluna Holdings, Inc. reported that it signed a Memorandum of Understanding with Siemens to work on power management for artificial intelligence and high-performance computing workloads. The collaboration focuses on deploying and validating a behind-the-meter power-and-controls approach designed to handle rapid, GPU-driven swings in power demand when these workloads run directly on renewable energy sources. The arrangement is described in a press release dated January 8, 2026, which is attached as an exhibit and incorporated by reference.
A director of Soluna Holdings, Inc. reported an insider stock sale. On 12/16/2025, the director sold 1,300 shares of Soluna common stock at a price of $1.41 per share, as shown in the non-derivative securities table. After this transaction, the director beneficially owned 1,318,715 shares of common stock in direct ownership. The filing indicates this Form 4 was filed for one reporting person and reflects only non-derivative holdings, with no derivative securities reported in Table II.
Soluna Holdings, Inc. reported that one of its directors and its chief financial officer sold 1,017 shares of common stock on 12/12/2025 at $2.19 per share, leaving 1,179,787 common shares beneficially owned directly.
The same reporting person also sold 5,669 shares of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock at $9.26 per share and now directly holds 52,977 preferred shares.
Soluna Holdings, Inc. reported that a company director sold shares of its 9.0% Series A Cumulative Perpetual Preferred Stock over three days in December 2025. On 12/10/2025, the director sold 2,000 preferred shares at an average price of $9.70 per share, leaving 11,748 shares beneficially owned. On 12/11/2025, the director sold 741 preferred shares at $9.90 per share, reducing holdings to 11,007 shares. On 12/12/2025, the director sold another 2,000 preferred shares at an average price of $9.76 per share, and directly beneficial ownership stood at 9,007 preferred shares after these transactions.
Soluna Holdings reported an insider transaction involving its 9.0% Series A Cumulative Perpetual Preferred Stock. Director Mr. Phelan sold 7,001 preferred shares on 12/10/2025 at an average price of $9.58 per share, leaving him with 127,970 shares of this series.
On 12/11/2025, he sold an additional 3,737 preferred shares at an average price of $9.52 per share, after which he beneficially owned 124,233 shares of the same preferred stock.
Soluna Holdings, Inc. reported insider equity activity by its Chief Accounting Officer. On December 1, 2025, the officer received a grant of 226,108 restricted stock awards representing shares of common stock, par value $0.001 per share. These awards will vest 33% on December 1, 2026, 33% on December 1, 2027, and 34% on December 1, 2028, subject to the reporting person remaining in the company’s service on each vesting date.
On the same date, a separate transaction coded "F" involved the disposition of 3,412 shares of common stock at a price of $1.63 per share. After the reported transactions, the officer beneficially owns 335,197 shares of Soluna common stock directly. This report amends a prior submission from December 3, 2025 that had incorrectly stated the number of shares beneficially owned after the transaction.