# EDGAR Filing Document

**Accession Number:** 0000064463
**File Stem:** 0001493152-26-019241
**Filing Date:** 2026-4
**Character Count:** 10484
**Document Hash:** 88b657a1e44f2b75c1bd05d8e66f03b4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001493152-26-019241.hdr.sgml**: 20260428

**ACCESSION NUMBER**: 0001493152-26-019241

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260428

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260428

**DATE AS OF CHANGE**: 20260428

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Soluna Holdings, Inc
- **CENTRAL INDEX KEY:** 0000064463
- **STANDARD INDUSTRIAL CLASSIFICATION:** FINANCE SERVICES [6199]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 141462255
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40261
- **FILM NUMBER:** 26903143

**BUSINESS ADDRESS:**
- **STREET 1:** 325 WASHINGTON AVENUE EXTENSION
- **CITY:** ALBANY
- **STATE:** NY
- **ZIP:** 12205
- **BUSINESS PHONE:** 518-218-2500

**MAIL ADDRESS:**
- **STREET 1:** 325 WASHINGTON AVENUE EXTENSION
- **CITY:** ALBANY
- **STATE:** NY
- **ZIP:** 12205

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MECHANICAL TECHNOLOGY INC
- **DATE OF NAME CHANGE:** 19920703

?xml version='1.0' encoding='ASCII'?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported): April 28, 2026**

**SOLUNA HOLDINGS, INC.**

**(Exact name of Registrant as Specified in Its Charter)**

---

| | | |
|:---|:---|:---|
| **Nevada** | **001-40261** | **14-1462255** |
| **(State or Other Jurisdiction**<br> **of Incorporation)** | **(Commission**<br> **File Number)** | **(IRS Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **325 Washington Avenue Extension**<br>**Albany, New York** | **12205** |
| **(Address of Principal Executive Offices)** | **(Zip Code)** |

---

**Registrant's Telephone Number, Including Area Code: (516) 216-9257**

**N/A**

**(Former Name or Former Address, if Changed Since Last Report)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

**Securities registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| Common stock, par value $0.001 per share | SLNH | The Nasdaq Stock Market LLC |
| 9.0% Series A Cumulative Perpetual Preferred Stock, par value $0.001 per share | SLNHP | The Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

**Item 7.01 Regulation FD Disclosure.**

On April 28, 2026, Soluna Holdings, Inc. issued a press release announcing a partnership with Sazmining, a pioneer in Bitcoin Mining as a Service (BMaaS). A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

*The information in this Current Report on Form 8-K under Item 7.01, including the information contained in Exhibit 99.1, is being furnished to the Securities and Exchange Commission, and shall not be deemed to be "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by a specific reference in such filing.*

**Item 9.01 Financial Statements and Exhibits**

(d) *Exhibits.*

99.1 [Press Release, dated April 28, 2026](ex99-1.htm) <br> 104 Cover Page Interactive Data File (embedded with the Inline XBRL document)

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **SOLUNA HOLDINGS, INC.** | **SOLUNA HOLDINGS, INC.** |
| Date: April 28, 2026 | By: | */s/ Michael Picchi* |
|  |  | Michael Picchi |
|  |  | Chief Financial Officer |
|  |  | (principal financial officer) |

---

## Exhibit 99.1

**Exhibit 99.1**

**Soluna and Sazmining Announce 3 MW Bitcoin Mining Operation at Project Dorothy 1B**

*Marks Sazmining's second U.S. deployment, with potential to scale subject to customer demand and capacity availability*

 

**ALBANY, NY,** **April 28, 2026** – Soluna Holdings, Inc. ("Soluna" or the "Company") (NASDAQ: SLNH), a developer of green data centers for intensive computing applications, including Bitcoin mining and AI, today announced a partnership with <u>Sazmining</u>, a pioneer in **Bitcoin Mining as a Service (BMaaS).** The collaboration will support Sazmining's second U.S.-based mining operation with an initial 3 MW deployment at Soluna's Project Dorothy 1B. The partnership has the potential to scale over time, subject to customer demand and facility availability.

"We're excited to welcome Sazmining to Project Dorothy and support their continued U.S. expansion," said John Belizaire, CEO of Soluna. "As Project Dorothy evolves to support both Bitcoin mining and AI workloads, partnerships like this highlight our ability to convert stranded renewable energy into high-performance computing across multiple use cases."

"This is exactly the kind of partnership that proves Bitcoin mining is a net positive for energy grids," said Kent Halliburton, CEO and Co-Founder of Sazmining. "We're not just showing up in Texas and plugging in; we're maximizing the value of a carbon-free energy asset. That unique alignment between Bitcoin miners and energy producers is what this industry should look like moving forward."

For more on Soluna's data center projects, please visit <u>www.solunacomputing.com</u>. To learn more about Sazmining's Bitcoin Mining as a Service offering, visit <u>www.sazmining.com</u>

**Safe Harbor Statement by Soluna**

This press release contains forward-looking statements. These statements are made under the "safe harbor" provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements include all statements, other than statements of historical fact, regarding our current views and assumptions with respect to future events regarding our business, our expectations with respect to Sazmining's initial 3 MW deployment, the potential demand for additional capacity at Project Dorothy 1B, the planned development and capacity of the third phase of Project Dorothy, and other statements that are predictive in nature. These forward-looking statements can be identified by terminology such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates," "confident," and similar statements. Soluna may also make written or oral forward-looking statements in its periodic reports to the U.S. Securities and Exchange Commission ("SEC"), in its annual report to shareholders, in press releases and other written materials, and in oral statements made by its officers, directors, or employees to third parties. Statements that are not historical facts, including but not limited to statements about Soluna's beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties, further information regarding which is included in the Company's filings with the SEC. All information provided in this press release is as of the date of the press release, and Soluna undertakes no duty to update such information, except as required under applicable law.

**About Soluna Holdings, Inc. (Nasdaq: SLNH)**

Soluna is on a mission to make renewable energy a global superpower, using computing as a catalyst. The Company designs, develops, and operates digital infrastructure that transforms surplus renewable energy into global computing resources. Soluna's pioneering data centers are strategically co-located with wind, solar, or hydroelectric power plants to support high-performance computing applications, including Bitcoin Mining, Generative AI, and other compute-intensive applications. Soluna's proprietary software MaestroOS(™) helps energize a greener grid while delivering cost-effective and sustainable computing solutions and superior returns. To learn more, visit solunacomputing.com and follow us on:

● LinkedIn: https://www.linkedin.com/company/solunaholdings/

● X (formerly Twitter): x.com/solunaholdings

● YouTube: youtube.com/c/solunacomputing

● Newsletter: bit.ly/solunasubscribe

● Resource Center: solunacomputing.com/resources

Soluna regularly posts important information on its website and encourages investors and potential investors to consult the Soluna investor relations and investor resources sections of its website regularly.

**About Sazmining**

Sazmining is pioneering a new era of Bitcoin Mining as a Service (BMaaS), where customers fully own their miners, rigs run on renewable energy, and incentives are perfectly aligned. Clients mine "wild sats" with direct-to-wallet payouts independent of exchanges, middlemen, or custodians. Sazmining operates data centers across North America, South America, Europe, and Africa, and is the only BMaaS provider to offer an annual rig performance guarantee. For media inquiries, contact media(at)sazmining(dot)com.

**Contact**

Public Relations

West of Fairfax for Soluna

Soluna@westof.co