Soluna Holdings, Inc. changed its external auditor. On March 29, 2026, the company dismissed UHY LLP as its independent registered public accounting firm and the Audit Committee approved this decision, effective the same day.
UHY’s audit reports on the financial statements for the fiscal years ended December 31, 2025 and 2024 contained no adverse opinions, disclaimers, or qualifications, and there were no disagreements or reportable events with UHY during that period. The Audit Committee also approved the appointment of KPMG LLP as the new independent registered public accounting firm for the fiscal year ending December 31, 2026.
Soluna Holdings, Inc. (SLNH) filed Amendment No. 1 to its registration statement (File No. 333-294152) as an exhibits-only pre-effective amendment dated March 30, 2026. The amendment updates and files an auditor consent (Exhibit 23.1); the prospectuses are unchanged and omitted.
Soluna Holdings, Inc. operates renewable energy-powered data centers focused on Bitcoin mining and hosting, emerging AI/high-performance computing (HPC) workloads, and demand response services. Its “Renewable Computing™” model colocates data centers with wind, solar and hydro projects, using proprietary MaestroOS™ software to optimize power usage and grid participation.
In 2025, Bitcoin hosting generated about 57% of revenue and proprietary Bitcoin mining about 38%, with demand response contributing around 4%. As of December 31, 2025, Soluna operated roughly 123 MW across Kentucky and Texas, with 83 MW under construction at Kati 1 and more than 900 MW in advanced development within a 4.3 GW project pipeline.
The company is expanding into AI-ready data centers through projects such as Kati 2 and Grace and relies on project-level financing partners including Spring Lane Capital, Navitas, Galaxy Digital and Generate Capital. It reports an accumulated deficit of about $367.7 million and highlights risks from sustained losses, high power needs, Bitcoin price volatility, customer concentration, significant leverage, and an evolving regulatory and environmental landscape.
Soluna Holdings released a February 2026 operational update covering Bitcoin mining performance and data center project milestones. Hosted hashrate averaged 3,883 PH/s and self-mining hashrate 760 PH/s, producing 9.5 BTC for the month.
At Project Dorothy, customer deployments and a 6 MW Blockware expansion brought the 50 MW campus back to full capacity. At Project Kati 1, the first 24 MW phase of K1A Galaxy reached substantial completion and steady-state operations, with the next 24 MW scheduled ahead of prior timing in March.
The company is advancing its AI and high‑performance computing strategy through Project Kati 2 and Project Grace, refining procurement for an initial 100 MW of critical IT capacity and engaging prospects interested in 350 MW, while progressing power and land agreements across its broader development pipeline.
Soluna Holdings, Inc. filed a shelf registration to offer up to $1,000,000,000 of securities, as reflected in the base prospectus subject to completion, dated March 9, 2026. The shelf explicitly includes $500 million of common stock available under a sales agreement.
The shelf covers common stock, preferred stock, warrants, debt securities, subscription rights and units. Common stock and Series A Preferred Stock trade on Nasdaq under SLNH and SLNHP; last reported sale prices on March 6, 2026 were $0.77 and $9.49, respectively. Shares issued and outstanding as of March 6, 2026: common 110,827,939, Series A Preferred 4,920,045, Series B Preferred 62,500.
Soluna Holdings filed a current report describing an expansion of its partnership with Blockware at the Dorothy 1 data center site in west Texas. The companies are adding an additional 6 megawatts of capacity, marking the third expansion of this relationship.
Deployment of the new capacity began in January and is expected to be completed by the end of February. Soluna highlights that repeat expansions with Blockware support its renewable-powered, behind-the-meter computing model focused on Bitcoin mining, AI, and other intensive workloads.
Soluna Holdings filed an 8-K to share a January 2026 business update and attach a detailed press release. The company is advancing several renewable-powered computing projects and expanding from Bitcoin-focused hosting into AI and high‑performance computing.
At Project Kati 1 (83 MW under construction), Soluna obtained ERCOT energization approval and began power commissioning for the 24 MW K1A Galaxy Phase 1, targeting completion in February, with additional 12 MW phases aiming to start commissioning in March and April. A new partnership will pilot Cormint’s proprietary container design at K1B, with equipment delivery expected in Q2.
For Project Kati 2, Soluna announced a joint venture with Metrobloks and is engineering a 350 MW Tier 3 AI campus across seven buildings, supported by over 500 acres of additional land. The company launched an RFP to 10 construction management firms and is negotiating with three potential single‑tenants to pre‑lease the full campus. Other updates include a 20 MW fleet upgrade underway at Project Dorothy 1A, winter‑storm‑driven curtailment at certain Bitcoin sites, advancing PPAs and land acquisition in its pipeline, and the planned appointment of Michael Picchi as Chief Financial Officer effective April 1, 2026.
Soluna Holdings, Inc. received a large shareholder disclosure from investor Robert L. Bugbee, who reported beneficial ownership of 9,168,000 shares of common stock, representing 9.3% of the class as of February 6, 2026.
Bugbee reports sole voting and sole dispositive power over all 9,168,000 shares, with no shared voting or dispositive authority. He also certifies that the shares were not acquired to change or influence control of Soluna Holdings and that he is not part of any group with respect to this investment.
Soluna Holdings, Inc. reported that it has received ERCOT approval to begin initial energizing and phased commissioning of its Project Kati 1 data center campus in South Texas. Project Kati 1 is an 83 MW wind-powered Bitcoin mining facility that is expected to increase Soluna’s total capacity by more than 67%.
The project is split into Kati 1A at 48 MW, targeted to be fully ramped by early Q2, and Kati 1B at 35 MW, expected to be completed by the end of Q3 and reaching overall completion in Q4. Kati 1B includes a 12 MW deployment with Cormint using eight modular data center units.
Soluna estimates anticipated annual revenue of $17.3–$19.6 million from Project Kati 1 and projects hashrate capacity of 3.5 EH/s, using wind power from the Las Majadas project to support large-scale Bitcoin mining and other intensive computing workloads.
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.