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): ~~June~~July 2314, 2026

SOLUNA HOLDINGS, INC.

(Exact name of Registrant as Specified in Its Charter)

Nevada

001-40261

14-1462255

(State or Other Jurisdiction

of 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 ☐

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 57.0301 ~~Amendments~~Regulation toFD ~~Articles of Incorporation or Bylaws; Change in Fiscal Year~~Disclosure.

~~Soluna~~On July 14, 2026, Soluna Holdings, Inc. (the “Company”) ~~previously~~issued ~~designated~~a ~~187,500~~press ~~shares~~release ofcontaining ~~preferred~~certain ~~stock~~previously asunreported ~~Series B Convertible Preferred~~corporate ~~Stock~~and ~~(the~~operational ~~“Preferred~~information ~~Stock”).~~which ~~In 2026,~~ the ~~previously~~Company ~~issued~~publishes ~~and~~regularly ~~outstanding 62,500 shares of Preferred Stock were converted, in their entirety,~~ to ~~6,510,416~~its ~~shares~~website. ofA ~~common~~copy ~~stock~~ of the ~~Company.~~press ~~Accrued~~release ~~dividends~~is ofattached ~~$2.1~~hereto ~~million~~as ~~were paid upon the full conversion~~Exhibit of99.1 ~~such~~and ~~shares~~is ofincorporated ~~Preferred~~by ~~Stock~~reference herein.

OnThe ~~June~~information ~~23,~~in ~~2026,~~Item ~~the~~7.01 ~~Company~~and ~~filed~~in aExhibit ~~Withdrawal~~99.1 ofwill ~~Designation~~not ~~relating~~be totreated ~~the~~as ~~Preferred~~“filed” ~~Stock~~for (the ~~“Withdrawal~~purposes of ~~Designation”) with~~Section ~~the~~18 ~~Secretary~~ of ~~State of~~ the ~~State~~Securities Exchange Act of ~~Nevada~~1934 ~~and terminated~~ (the ~~designation~~“Exchange ofAct”) ~~the~~or ~~Preferred~~otherwise ~~Stock.~~subject Atto the ~~time~~liabilities of ~~the~~that ~~filing~~section. ~~of the~~This ~~Withdrawal~~information ofwill not ~~Designation,~~be noincorporated ~~shares~~by ofreference ~~Preferred~~into ~~Stock~~any ~~were outstanding. The Withdrawal of Designation was effective upon~~ filing ~~and~~ ~~eliminated~~under ~~from~~ the ~~Company’s~~Securities ~~Articles~~Act of ~~Incorporation~~1933, as amended, ~~all~~or ~~matters~~into ~~set~~another ~~forth~~filing inunder the ~~previously-filed Certificate~~Exchange ofAct, ~~Designation~~unless ~~with~~that ~~respect~~filing toexpressly ~~the~~incorporates ~~previously~~this ~~designated~~information ~~Preferred~~by ~~Stock~~reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.		Description
99.1		Press Release, dated July 14, 2026
3.1		Certificate, Amendment or Withdrawal of Designation, relating to the Series B Convertible Preferred Stock, filed with the Secretary of State of Nevada on June 23, 2026.
104		Cover Page Interactive Date File (embedded with the Inline XBRL document)
104		Cover Page Interactive Data File (embedded within 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: June 25, 2026	By:	/s/ Michael Picchi
Date: July 14, 2026	By:	/s/ Michael Picchi
		Michael Picchi
		Chief Financial Officer
		(principal financial officer)

Filing Compare · Soluna Holdings, Inc