Form 8-K

8-K — Soluna Holdings, Inc

Accession: 0001493152-26-019241

Filed: 2026-04-28

Period: 2026-04-28

CIK: 0000064463

SIC: 6199 (FINANCE SERVICES)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

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EX-99.1 (ex99-1.htm)

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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

Incorporation)

(Commission

File

Number)

(IRS

Employer

Identification

No.)

325 Washington Avenue

Extension

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 ☐

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.

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

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.

Date: April 28, 2026

By:

/s/

Michael Picchi

Chief Financial Officer

(principal financial officer)

EX-99.1

Filename: ex99-1.htm · Sequence: 2

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 Sazmining, 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.”

Project

Dorothy, located in West Texas, is powered by the 150 MW Briscoe Wind Farm, which Soluna recently acquired as part of its strategy

to vertically integrate power generation and computing infrastructure. With full ownership of the energy source, the company is advancing

development across the broader Dorothy campus, including a planned third phase that the Company expects could deliver up to 300 MW of

compute capacity for AI workloads.

“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 www.solunacomputing.com. To learn more about Sazmining’s Bitcoin

Mining as a Service offering, visit www.sazmining.com

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

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

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