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. (SLNH) amended its agreement with Dory Creek, LLC, a wholly owned subsidiary of Bitdeer Technologies Group, for approximately 7 MW of additional Bitcoin mining equipment at Project Kati 1. Bitdeer’s total deployment there will be 35 MW and approximately 2.42 EH/s of hash rate.
The expansion is expected to be complete in November 2026. Project Kati 1 is an 83 MW wind-powered data center in South Texas, and the deployment is in its K1BC phase, which is now fully subscribed. Under the co-mining arrangement, Soluna provides the site, power and turnkey operations; Bitdeer provides and owns its Sealminer A2 Pro Air mining equipment; and the parties share the mining proceeds generated by the deployment. The amendment has the same structure as the original agreement.
Soluna Holdings, Inc. Chief Accounting Officer Jessica L. Thomas reported a sale of 30,000 shares of common stock on September 23, 2026, at $1.26 per share. The transaction is described as a sale in the open market or a private transaction. She directly held 1,481,417 shares after the sale. No Rule 10b5-1 plan is reported.
Soluna Holdings, Inc (SLNH) reported that Chief People Officer Mary Jennifer OReilly had 16,189 shares of common stock disposed of on September 1, 2026 as a payment of exercise price or tax liability by delivering or withholding securities. The shares were valued at $1.05 per share for this purpose, and she now holds 1,687,486 common shares directly following the transaction. No Rule 10b5-1 trading plan is reported for this filing.
Soluna Holdings, Inc (SLNH) reported that Chief Accounting Officer Jessica L. Thomas had 5,343 shares of common stock disposed of on September 1, 2026 to pay the exercise price or tax liability by delivering or withholding securities at a reported price of $1.05 per share. After this code F transaction, Thomas directly held 1,511,417 shares of Soluna common stock. No Rule 10b5-1 trading plan is reported for this transaction.
Soluna Holdings, Inc. (SLNH) disclosed that ERCOT has conditionally classified the 100 MW Project Dorothy campus as Base Load in Batch Zero, preserving its studied interconnection capacity and exempting it from further reliability evaluation or megawatt allocation within that study. This follows a prior conditional Base Load position for the full 166 MW at Project Kati, bringing the conditionally classified Base Load capacity across both Texas campuses to 266 MW. Soluna has also submitted a 50 MW load interconnection request for additional capacity at the Dorothy site, which is being studied directly by the transmission and distribution provider. Project Dorothy is a 100 MW wind-powered campus in Briscoe County, Texas, built behind the meter at the 150 MW Briscoe Wind Farm, and Dorothy 1 and 2 account for 98 MW of energized capacity. Soluna reports total operating capacity of approximately 206 MW and a development pipeline of about 6.3 GW, while participating in ERCOT’s ongoing verification process for the conditional classifications.
Soluna Holdings, Inc. (SLNH) reported that Chief Executive Officer John Belizaire will participate in the H.C. Wainwright 28th Annual Global Investment Conference under a Regulation FD communication. The company furnished a press release as Exhibit 99.1 describing his appearance on a panel about digital infrastructure for AI and Bitcoin.
The conference will be held in New York from September 14–16, 2026, and Belizaire is scheduled to join a panel titled “Powering The AI Boom & Bitcoin Network: The Digital Infrastructure Companies Leading the Charge” on September 14, 2026 at 2:00 PM ET. The information furnished is not deemed filed under the Exchange Act.
Soluna Holdings, Inc. (SLNH) reports two key milestones at its Project Kati campus in Willacy County, Texas. The company energized the final 14 MW at Project Kati 1, completing the 83 MW first-phase site, and now has total operating capacity of about 206 MW.
ERCOT has conditionally classified the full 166 MW Kati campus as Base Load in its Batch Zero interconnection process, covering both Kati 1 and the planned Kati 2 AI expansion. Soluna also highlights a development pipeline of about 6.3 GW, including more than 650 MW of AI and high-performance computing capacity in development at Kati 2 and Project Dorothy 3.
Soluna Holdings, Inc (SLNH) director William P. Phelan reported selling 12,037 shares of common stock on September 3, 2026 in an open-market or private transaction at an average sales price of about $1.12 per share, with individual prices ranging from $1.11 to $1.125. After this sale, he directly holds 2,279,985 shares of Soluna common stock. No Rule 10b5-1 trading plan is reported for this transaction.
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.