Form 8-K

8-K — Soluna Holdings, Inc

Accession: 0001493152-26-021610

Filed: 2026-05-07

Period: 2026-05-07

CIK: 0000064463

SIC: 6199 (FINANCE SERVICES)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

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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): May 7, 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.

May 7, 2026, Soluna Holdings, Inc. (the “Company”) issued a press release containing certain previously unreported corporate

and operational information which the Company publishes regularly to its website. A copy of the press release is attached hereto as Exhibit

99.1 and is incorporated by reference herein.

The

information in Item 7.01 and in Exhibit 99.1 will not be treated as “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. This information will

not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or into another filing under the Exchange

Act, unless that filing expressly incorporates this information by reference.

Item

9.01 Financial Statements and Exhibits.

(d)

Exhibits.

99.1

Press Release, dated May 7, 2026

104

Cover

Page Interactive Date 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:

May 7, 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

Announces Monthly Business Update

ALBANY,

NY, May 7, 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, announced its April 2026

project site-level operations, developments, and updates.

The

Company has provided the following Corporate and Site Updates.

Key

Company Metrics:

The

monthly metrics are now available here.

Corporate

Highlights:

● Soluna

closed its $53M acquisition of the Briscoe Wind Farm, achieving full vertical integration

and direct ownership of a renewable generation asset for the first time. Read more

● Soluna

acquired full ownership of Project Dorothy 1A, accelerating the site’s development

toward an AI-ready campus and deepening our vertical integration strategy. Read more

● Soluna

and Sazmining launched a 3 MW Bitcoin mining operation at Project Dorothy 1B, adding a new

hosting partner to our growing Dorothy campus. Read more

● Soluna

announced its fourth expansion with Blockware, surpassing 17 MW of total hosting capacity

and reinforcing the depth of our long-term partner relationships. Read more

● Soluna

regained compliance with Nasdaq listing requirements. Read more

● CEO

John Belizaire participated in the Water Tower Research Insights Conference, speaking to

our infrastructure model and the AI energy opportunity. Read more

● CEO

John Belizaire joined Disruptor Investor for an X Spaces conversation on Soluna’s positioning

at the intersection of renewable energy and AI infrastructure. Listen here

● Soluna

was featured in Power Mining Analysis’ Deep Dive series, highlighting our behind-the-meter

model and pipeline advantage. Watch here

● Luxor

published a case study on Soluna, spotlighting our operational approach and execution track

record. Learn more

Key

Project Updates:

Project

Dorothy 1A (25 MW, Bitcoin Hosting) / Project Dorothy 1B (25 MW, Bitcoin Prop-Mining):

● Transformer

repair work impacted the availability of two MDCs at D1A. We expect the MDCs to return to

service in early May, at which point D1A will return to full capacity.

● Prop

mining at D1B has been further consolidated following the execution of the hosting agreement

with Saz Mining, with two MDCs of S21XP units deployed. D1B now has 6 MDCs planned

for hosting and 16 MDCs for prop mining.

● Deployments

for hosting customers to reach full capacity are ongoing, and prop mining will remain operational

in the designated hosting MDCs until hosted miners are received.

Project

Dorothy 2 (48 MW, Bitcoin Hosting):

● Operations

remained strong for the month, with all customers at full capacity.

Project

Sophie (25 MW, Bitcoin Hosting):

● Operations

remained strong for the month, with all customers at full capacity.

Project

Kati 1 (83 MW Under Construction, Bitcoin Hosting):

● Operations

for K1A Galaxy (48 MW) have remained steady for the month.

● Construction

of K1B (35 MW, Soluna MDCs / Cormint Containers): Cormint containers have been installed,

and mechanical completion for the phase has been achieved. Power commissioning has commenced,

and the phase is on track to complete the substation ahead of schedule. Construction of the

remaining phases of Soluna MDCs remains on schedule.

Project

Kati 2 (300+ MW, Under Development, AI/HPC Hosting):

● The

data center design process is now underway, with leading architectural and engineering firms

selected from a competitive RFP process. are award-winning firms with deep experience in

AI data center projects. Soluna expects to provide additional information on these engagements

once contracts are finalized.

● Hyperscaler

and neocloud interest, due diligence, and discussions remain active. Additional parties have

joined the process.

● Geotechnical

work was completed on the land parcel for the expansion.

● The

tax abatement process has begun.

● Drafting

of construction RFP underway.

● Negotiations

are underway on the initial gas engine purchase.

Project

Dorothy 3 (300+ MW, Under Development, AI/HPC Hosting):

● Initial

50 MW expansion interconnection load study underway with Goldenspread Electric Cooperative

and ONCOR

● ~400

acres of land to support expansion under LOI; purchase agreement expected to close in the

coming weeks

● Fiber

studies underway with leading fiber providers

● Community

relations task force established to proactively engage Briscoe County residents ahead of

data center construction

Project

Grace (2 MW Under Development, AI/HPC Hosting):

● Soluna

has partnered with the Siemens PTI team to lead technical modeling efforts. Siemens is conducting

high-fidelity simulations to validate system performance under dynamic AI load conditions,

including rapid demand fluctuations. This work focuses on ensuring the design supports voltage

ride-through and mitigates SSO-related risks.

● The

design process is underway with a focus on ensuring technical readiness for AI/HPC deployment.

Pipeline

Highlights:

● Finalizing

Power Purchase Agreements (PPAs) and Retail Electric Provider (REP) agreements for Project

Annie.

● Projects

Annie and Fei continue to advance outside of the ERCOT Large Flexible Load Batch study process,

leveraging the sub-75 MW interconnection pathway to accelerate development timelines.

● Continuing

to advance partnership opportunities and evaluate potential assets with multiple IPPs across

the U.S. ISOs.

Customer

Success:

● Soluna

and Sazmining announced our first 3 MW Bitcoin Mining Operation at Project Dorothy 1B.

● Soluna

announces fourth expansion with Blockware Solutions, surpassing 17 MW of Total Capacity.

● Completing

MW deployments across new & expanding partnership agreements secured previously at Project

Dorothy 1 & 2.

View

Soluna’s recent AMA here.

Soluna’s

updated glossary of terms is available here.

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 and our expectations with respect

to the development, construction, commissioning, and operation of our project pipeline, including Project Kati 1, Project Kati 2, Project

Grace, the expansion of hosting arrangements at Project Dorothy 1B, [the expected return to service of equipment at Project Dorothy 1A],

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. Readers are cautioned that any forward-looking information

provided by us or on our behalf is not a guarantee of future performance. Actual results may differ materially from those contained in

these forward-looking statements as a result of various factors disclosed in our filings with the Securities and Exchange Commission

(“SEC”), including the “Risk Factors” section of our Annual Report on Form 10-K filed with the SEC on March 30,

2026. All forward-looking statements speak only as of the date on which they are made, and we undertake no duty to update or revise any

forward-looking statements, whether as a result of new information, future events, or otherwise, except to the extent required by 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/

(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

Information

Public

Relations

West

of Fairfax for Soluna

Soluna@westof.co

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