Company Update

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 30, 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 8.01 Other Events.   On April 30, 2026, Soluna Holdings, Inc. (the “Company”) received formal written notice from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that the Company has regained compliance with the $1.00 minimum bid price requirement for continued listing on The Nasdaq Capital Market, as set forth in Nasdaq Listing Rule 5550(a)(2) (the “Bid Price Rule”) and that this matter is now closed.   As previously disclosed, the Company received written notice from Nasdaq indicating that the Company was not in compliance with the Bid Price Rule, and in accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company was given until October 7, 2026, to regain compliance.   On May 1, 2026, the Company issued a press release announcing that the Company regained compliance with the Bid Price Rule on April 30, 2026, which is filed herewith as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.   Item 9.01 Financial Statements and Exhibits.   (d) Exhibits.   99.1   Press Release, dated May 1, 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 May 1, 2026 By: /s/ Michael Picchi     Michael Picchi     Chief Financial Officer     (principal financial officer)