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 (SLNH) has a notice that director William P. Phelan intends to sell common stock under Rule 144. The filing lists 12,037 shares of common stock to be sold through Fidelity Brokerage Services LLC on NASDAQ. Shares will be sold from three brokerage and IRA accounts associated with Phelan.
The notice also lists multiple recent preferred stock sales by William Phelan over the past three months, each with specific share amounts and dollar values, indicating ongoing liquidity activity in Soluna securities by this insider.
Soluna Holdings, Inc (SLNH) director William P. Phelan reported open‑market sales of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock (ticker SLNHP). He sold 5,039 shares at $12.25 on August 28, 2026 and 3,188 shares at $12.08 on August 31, 2026, for total reported sales of 8,227 preferred shares. The filing indicates these transactions were not made pursuant to a Rule 10b5‑1 trading plan.
Soluna Holdings, Inc (SLNH) reported that Chief Executive Officer and director John Belizaire sold 1,000 shares of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock on 2026-09-01 at $11.91 per share. After this Rule 10b5-1 plan trade, he directly holds 98,042 preferred shares.
Soluna Holdings, Inc (SLNH) received a notice that John Belizaire, identified as an officer, intends to sell 1,000 shares of preferred stock under Rule 144. The shares are to be sold through Fidelity Brokerage Services LLC, with an indicated aggregate value of $11,910.00 on the NASDAQ.
The 1,000 preferred shares were acquired from the issuer on June 1, 2024 as compensation. The proposed sale date referenced is September 1, 2026. The Form 144 notice is signed by Audrey Skillern as a duly authorized representative of Fidelity, acting as attorney-in-fact for John Belizaire.
Soluna Holdings, Inc (SLNH) reported that its Chief Financial Officer, Michael Picchi, purchased 20,000 shares of common stock on 2026-08-28 in an open market or private transaction at $1.13 per share. Following this transaction, he directly holds 1,431,250 common shares. The filing indicates the trade was not made under a Rule 10b5-1 trading plan.
Soluna Holdings, Inc (SLNH) reported that its Chief Executive Officer and director, John Belizaire, purchased 50,000 shares of common stock on 2026-08-26 at $1.20 per share in an open-market or private transaction. Following this buy, he directly holds 7,063,105 shares of Soluna common stock. The filing indicates the Rule 10b5-1 checkbox was not marked as an affirming trading plan.
Soluna Holdings, Inc (SLNH) director William P. Phelan reported selling a total of 14,961 shares of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock (ticker SLNHP) in three transactions. The sales occurred on August 25, 26, and 27, 2026 at prices between $12.00 and $12.09 per share in open-market or private transactions. Post-transaction preferred holdings are not stated in this filing.
Soluna Holdings, Inc (SLNH) director William P. Phelan reported selling shares of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock (SLNHP). He sold 5,000 shares at $11.66 per share on August 24, 2026 and 8,843 shares at $12.29 per share on August 21, 2026, all held directly. The filing does not state his post-transaction holdings, and the transactions were not reported as made under a Rule 10b5-1 trading plan.
Soluna Holdings, Inc. (SLNH) reported that one of its subsidiaries entered into a co-mining agreement with Dory Creek, LLC, a wholly owned subsidiary of Bitdeer Technologies Group. Under this agreement, Bitdeer will deploy about 28 MW of Bitcoin mining equipment, representing roughly 1.93 EH/s of hash rate, at Soluna’s wind-powered Project Kati 1 data center in South Texas. Deployment is expected to begin in September 2026 and ramp in batches. Project Kati 1 is described as an 83 MW site, contributing to Soluna’s total of 192 MW of operating data center capacity and a development pipeline of 6.3 GW across projects in various stages.
Soluna Holdings, Inc (SLNH) reported that its Chief Financial Officer, Michael Picchi, purchased company common stock in two open‑market transactions. On 2026-08-24 he bought 10,000 shares at $1.14 per share, and on 2026-08-20 he bought 20,000 shares at $1.15 per share, all held as direct ownership. The filing indicates these trades were not made under a Rule 10b5-1 trading plan.