Form 8-K

8-K — Soluna Holdings, Inc

Accession: 0001493152-26-042479

Filed: 2026-09-14

Period: 2026-09-14

CIK: 0000064463

SIC: 6199 (FINANCE SERVICES)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

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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): September 14, 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.

On September 14, 2026, Soluna Holdings, Inc. issued a press release announcing

that ERCOT has conditionally classified its 100 MW Project Dorothy campus as Base Load in Batch Zero. 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 September 14, 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:

September 14, 2026

By:

/s/

Michael Picchi

Michael

Picchi

Chief

Financial Officer

(principal

financial officer)

EX-99.1

Filename: ex99-1.htm · Sequence: 2

Exhibit

99.1

Soluna

Secures Conditional Base Load Position for Project Dorothy’s 100 MW in ERCOT Batch Zero

additional 50 MW request at the campus is already under study

ALBANY,

NY, September 14, 2026 – Soluna Holdings, Inc. (“Soluna” or the “Company”) (NASDAQ: SLNH), a

developer of green data centers for intensive computing applications, including AI and Bitcoin mining, today announced that ERCOT has

conditionally classified its 100 MW Project Dorothy campus as Base Load in Batch Zero. The classification follows last week’s conditional

Base Load position for the full 166 MW at Project Kati.

“We

put the load at the generation instead of waiting years in an interconnection queue,” said John Belizaire, CEO of Soluna. “Dorothy

has run that way from the start. That is why 266 megawatts across both of our Texas campuses is now conditionally classified as base

load, and why we can keep growing at Dorothy from a position of strength.”

Soluna

has formally submitted a load interconnection request to the transmission and distribution service provider for an additional 50 MW at

the Dorothy site. The request falls below the Batch Zero threshold and the provider is studying it directly, which it has confirmed is

underway.

Batch

Zero is ERCOT’s transitional process for evaluating large load interconnection requests system-wide, replacing the prior project-by-project

approach. A Base Load classification preserves a project’s interconnection capacity based on prior study work and exempts it from

further reliability evaluation or megawatt allocation within the study. ERCOT reported more than 438,000 MW of large load requests

in the queue as of mid-2026, nearly 90 percent of them from data centers.

The

classification is conditional pending completion of ERCOT’s ongoing verification process, under which ERCOT may remove a project

from Batch Zero if the applicant does not respond to its information requests. Soluna is participating in the verification process and

expects ERCOT to confirm the classification.

Project

Dorothy is a 100 MW wind-powered campus in Briscoe County, Texas, built behind the meter at the 150 MW Briscoe Wind Farm, which Soluna

acquired in April 2026. Dorothy 1 and Dorothy 2 account for 98 MW of energized capacity. Project Dorothy 3, the 300 MW next phase on

the campus, is designed for AI and high-performance computing.

Soluna’s

total operating capacity is approximately 206 MW, and the Company continues to advance a development pipeline of approximately 6.3 GW.

For

more information, visit www.solunacomputing.com.

Safe

Harbor Statement

This

announcement 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, including the final classification

of the Project Dorothy campus in ERCOT’s Batch Zero process, the development of Project Dorothy, and the Company’s development

pipeline. 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:

linkedin.com/company/solunaholdings

(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.

Contact

Public

Relations

West

of Fairfax for Soluna

Soluna@westof.co

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