Soluna Holdings, Inc
For the period ended Dec 31, 2025. Filed Mar 30, 2026.
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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.
FY2025 · Filed Mar 30, 2026
SLNH$0.52-4.0%Stored close · as of Nov 10, 2026
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Item 15. Exhibits, Financial Statement Schedules
15(a) (1) Financial Statements: The financial statements filed herewith are set forth on the Index to Consolidated Financial Statements on page F-1 of the separate financial section which accompanies this Annual Report, which is incorporated herein by reference.
15(a) (2) Financial Statement Schedules: Financial statement schedules not listed have been omitted because they are either not required, not applicable, or the information has been included elsewhere in the consolidated financial statements or notes thereto.
15(a) (3)
| ExhibitNumber | Description |
| 1.1 | At The Market Offering Agreement, dated as of April 29, 2025, by and between Soluna Holdings, Inc. and H.C. Wainwright & Co., LLC (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on April 29, 2025) |
| 2.1 | Agreement and Plan of Merger dated August 11, 2021, by and among Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, SCI Merger Sub, Inc., and Soluna Callisto Holdings Inc., formerly known as Soluna Computing, Inc. (incorporated by reference from Exhibit 2.1 of the Company’s Form 8-K Report filed August 12, 2021). |
| 3.1 | Articles of Incorporation of Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated (incorporated by reference from Exhibit 3.1 of the Company’s Form 10-K Report for the year ended December 31, 2020 (the “2020 Form 10-K”)). |
| 3.2 | Articles of Merger filed with the Secretary of State of Nevada (incorporated by reference from Exhibit 3.3 of the 2020 Form 10-K). |
| 3.3 | Certificate of Merger filed with the Department of State of New York (incorporated by reference from Exhibit 3.4 of the 2020 Form 10-K). |
| 3.4 | Certificate of Amendment filed with the Secretary of State of Nevada dated June 9, 2021 (incorporated by reference from Exhibit 3.1 of the Company’s Form 8-K Report filed June 15, 2021). |
| 3.5 | Certificate of Amendment to Articles of Incorporation filed with the Secretary of State of Nevada on November 2, 2021 (incorporated by reference from Exhibit 3.1 of the Company’s Form 8-K Report filed November 4, 2021). |
| 3.6 | Bylaws of the Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, (incorporated by reference from Exhibit 3.2 of the 2020 Form 10-K). |
| 3.7 | Certificate of Designations, Preferences and Rights of 9.0% Series A Cumulative Perpetual Preferred Stock filed with the Secretary of State of the State of Nevada on August 18, 2021 (Incorporated by reference to the Company’s Form 8-A, filed with the SEC on August 19, 2021). |
| 3.8 | Certificate of Amendment to Certificate of Designations, Preferences and Rights of 9.0% Series A Cumulative Perpetual Preferred Stock, filed with the Secretary of State of the State of Nevada on December 22, 2021 (Incorporated by reference to the Company’s Form 8-K Report filed with the SEC on December 29, 2021). |
| 3.9 | Certificate of Amendment to Certificate of Designations, Preferences and Rights of 9.0% Series A Cumulative Perpetual Preferred Stock, filed with the Secretary of State of the State of Nevada on April 21, 2022 (Incorporated by reference to the Company’s Form 8-K Report filed with the SEC on April 27, 2022). |
| 3.10 | Certificate of Designation of Series B Convertible Preferred Stock, filed with the Nevada Secretary of State on July 20, 2022 (Incorporated by reference to the Company’s Form 8-K Report filed with the SEC on July 20, 2022). |
| 3.11 | Certificate of Change dated October 11, 2023 (incorporated by reference to Exhibit 3.1 of the Company’s Form 8-K Report filed October 17, 2023) |
| 3.12 | Certificate of Amendment to Articles of Incorporation, filed with the Secretary of State of Nevada on November 7, 2025 (incorporated by reference to the Company’s Current Report on Form 8-K Report filed November 10, 2025). |
| 4.1 | Form of Common Purchase Warrant (incorporated by reference from Exhibit 4.3 of the Company’s Registration Statement on Form S-1/A filed April 12, 2021). |
| 4.2 | Form of Underwriters’ Warrant (incorporated by reference from Exhibit 4.4 of the Company’s Registration Statement on Form S-1/A filed April 12, 2021). |
| 4.3 | Form of Warrant Agent Agreement between Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, and American Stock Transfer & Trust Company, LLC (incorporated by reference from Exhibit 4.1 of the Company’s Form 8-K Report filed April 29, 2021). |
| 4.4 | Form of 9.0% Series A Cumulative Perpetual Preferred Stock Certificate (incorporated by reference from Exhibit 4.2 of the Company’s Form 8-K Report filed August 23, 2021). |
| 4.5 | Form of Secured Convertible Note issued by the Company pursuant to and in accordance with the Securities Purchase Agreement dated as of October 20, 2021 (incorporated by reference from Exhibit 4.1 of the Company’s Form 8-K Report filed October 25, 2021). |
| 4.6 | Form of Representative’s Warrant (incorporated by reference from Exhibit 4.2 of the Company’s Form 8-K Report filed December 29, 2021). |
| 4.7 | Form of Class G Common Stock Purchase Warrant (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 14, 2022). |
| 4.8 | Description of Securities |
| 4.9 | Form of A Warrant dated May 11, 2023 (incorporated by reference to Exhibit 4.17 to the Quarterly Report on Form 10-Q filed on May 15, 2023 (the “First Quarter 2023 Form 10-Q”)) |
| 4.10 | Form of B Warrant dated May 11, 2023 (incorporated by reference to Exhibit 4.18 to the First Quarter 2023 Form 10-Q) |
| 4.11 | Form of Warrant- Extension $0.01 Warrant (dated February 28, 2024) (incorporated by reference to Exhibit 4.23 the Company’s Quarterly Report on Form 10-Q filed with the SEC on May 15, 2024) |
| 4.12 | Form of Warrant- Five Year Warrant for Exercise of $6.00 Repriced Warrant (incorporated by reference to Exhibit 4.24 the Company’s Quarterly Report on Form 10-Q filed with the SEC on May 15, 2024) |
| 4.13 | Form of Certificate of Amendment to the Certificate of Designation for the Series B Stock (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 4.14 | Form of Warrant (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 27, 2025) |
| 4.15 | Form of Series A Warrant issued in the Offering (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 17, 2025). |
| 4.16 | Form of Series B Warrant issued in the Offering (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 17, 2025) |
| 4.17 | Form of Pre-Funded Warrant issued in the Offering (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 17, 2025). |
| 4.18 | Form of Placement Agent Warrant issued in the Offering (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 17, 2025). |
| 4.19 | Form of Pre-Funded Warrant (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 16, 2025). |
| 4.20 | Form of Common Warrant (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 16, 2025). |
| 4.21 | Form of Pre-Funded Warrant (incorporated by reference to the Company's Current Report on Form 8-K filed with the SEC on December 5, 2025). |
| 4.22 | Form of Series C Warrant (incorporated by reference to the Company's Current Report on Form 8-K filed with the SEC on December 5, 2025). |
| 4.23 | Form of Placement Agent Warrant (incorporated by reference to the Company's Current Report on Form 8-K filed with the SEC on December 5, 2025). |
| 10.1+ | Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, Amended and Restated 2012 Equity Incentive Plan (incorporated by reference from Exhibit 10.3 of the Company’s Form 10-K Report for the year ended December 31, 2016). |
| 10.2+ | Form of Restricted Stock Agreement Notice for Board of Directors and Employees for Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2012 Equity Incentive Plan (incorporated by reference from Exhibit 10.2 of the Company’s Form 10-Q Report for the quarter ended June 30, 2012). |
| 10.3+ | Form of Incentive Stock Option Notice for Employees for Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2012 Equity Incentive Plan (incorporated by reference from Exhibit 10.3 of the Company’s Form 10-Q Report for the quarter ended June 30, 2012). |
| 10.4+ | Form of Non-Qualified Stock Option Notice for Employees for Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2012 Equity Incentive Plan (incorporated by reference from Exhibit 10.4 of the Company’s Form 10-Q Report for the quarter ended June 30, 2012). |
| 10.5+ | Form of Non-Qualified Stock Option Notice for Board of Directors for Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2012 Equity Incentive Plan (incorporated by reference from Exhibit 10.5 of the Company’s Form 10-Q Report for the quarter ended June 30, 2012). |
| 10.6+ | Form of Restricted Stock Award Agreement under the Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, Amended and Restated 2012 Equity Incentive Plan (incorporated by reference from Exhibit 10.8 of the Company’s Registration Statement on Form 10 filed March 4, 2020). |
| 10.7+ | Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2014 Equity Incentive Plan (incorporated by reference to Exhibit A to the Registrant’s Proxy Statement on Schedule 14A filed with the Commission on April 25, 2014). |
| 10.8+ | Form of Restricted Stock Grant Agreement under the Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2014 Equity Incentive Plan (incorporated by reference from Exhibit 10.10 of the Company’s Registration Statement on Form 10 filed March 4, 2020). |
| 10.9+ | Form of Nonstatutory Stock Option Grant Agreement under the Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2014 Equity Incentive Plan (incorporated by reference from Exhibit 4.3 of the Company’s Registration Statement on Form S-8 (File No. 333-196989) filed with the Commission on June 24, 2014). |
| 10.10+ | Form of Incentive Stock Option Grant Agreement under the Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2014 Equity Incentive Plan (incorporated by reference from Exhibit 4.4 of the Company’s Registration Statement on Form S-8 (File No. 333-196989) filed with the Commission on June 24, 2014). |
| 10.11+ | Amended and Restated Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2021 Stock Incentive Plan (incorporated by reference to Exhibit A to the Registrant’s Proxy Statement on Schedule 14A filed with the Commission on October 7, 2021) |
| 10.12+ | Form of Stock Option Agreement under the Amended and Restated Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2021 Stock Incentive Plan (incorporated by reference from Exhibit 10.11 of the 2021 Form 10-K.) |
| 10.13+ | Form of Restricted Stock Agreement under the Amended and Restated Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2021 Stock Incentive Plan (incorporated by reference from Exhibit 10.13 of the 2021 Form 10-K.) |
| 10.14+ | Form of Restricted Stock Unit Agreement under the Amended and Restated Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, 2021 Stock Incentive Plan (incorporated by reference from Exhibit 10.14 of the 2021 Form 10-K.) |
| 10.15+ | Second Amended And Restated 2021 Stock Incentive Plan (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on June 1, 2022). |
| 10.16+ | Form of Option Agreement for the Second Amended And Restated 2021 Stock Incentive Plan (Incorporated by reference as Exhibit 10.7 to the Company’s Current Report on Form 10-Q filed with the SEC on August 15, 2022). |
| 10.17+ | Form of Restricted Stock Agreement for the Second Amended And Restated 2021 Stock Incentive Plan (Incorporated by reference as Exhibit 10.8 to the Company’s Current Report on Form 10-Q filed with the SEC on August 15, 2022). |
| 10.18+ | Form of Restricted Stock Unit Agreement for the Second Amended And Restated 2021 Stock Incentive Plan (Incorporated by reference as Exhibit 10.9 to the Company’s Current Report on Form 10-Q filed with the SEC on August 15, 2022). |
| 10.19 | Class A Preferred Share Purchase Agreement dated January 13, 2020, among Harmattan Energy, Ltd., formerly known as Soluna Technologies, Ltd., Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, and the other investors set forth on Exhibit A thereto (incorporated by reference from Exhibit 10.21 of the Company’s Registration Statement on Form 10 filed March 4, 2020). |
| 10.20 | Amended and Restated Contingent Rights Agreement dated November 5, 2021, by and between Harmattan Energy, Ltd. and Soluna Holdings, Inc. (incorporated by reference from Exhibit 10.26 of the 2021 Form 10-K) |
| 10.21 | Side Letter Agreement dated January 13, 2020, by and between Harmattan Energy, Ltd., formerly known as Soluna Technologies, Ltd., and Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated (incorporated by reference from Exhibit 10.23 of the Company’s Registration Statement on Form 10 filed March 4, 2020). |
| 10.22 | Industrial Power Contract dated February 22, 2021, by and between Soluna SW LLC, formerly known as EcoChain Wind, LLC, and a West Kentucky Rural Electric Cooperative Collaboration (incorporated by reference from Exhibit 10.1 of the Company’s Form 10-Q Report for the quarter ended June 30, 2021) |
| 10.23 | Form of Guaranty of Rent dated as of May 3, 2021, by and between Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, and a power-providing cooperative (incorporated by reference from Exhibit 10.5 of the Company’s Form 8-K Report filed May 4, 2021). |
| 10.24 | Termination Agreement dated August 11, 2021, by and among Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, Soluna Computing, Inc., formerly known as EcoChain, Inc., and Harmattan Energy, Ltd. (incorporated by reference from Exhibit 10.1 of the Company’s Form 8-K Report filed August 12, 2021). |
| 10.25 | Securities Purchase Agreement dated October 20, 2021, by and between Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, and accredited investors (incorporated by reference from Exhibit 10.1 of the Company’s Form 8-K Report filed October 25, 2021). |
| 10.26 | Registration Rights Agreement dated October 25, 2021, by and between the Company and accredited investors (incorporated by reference from Exhibit 10.2 of the Company’s Form 8-K Report filed October 25, 2021). |
| 10.27 | Security Agreement dated October 25, 2021, by and among the Company, MTI Instruments and Soluna Computing, Inc., formerly known as EcoChain, Inc., Soluna MC LLC, formerly known as EcoChain Block LLC, and Soluna SW LLC, formerly known as EcoChain Wind LLC, and Collateral Services LLC (incorporated by reference from Exhibit 10.3 of the Company’s Form 8-K Report filed October 25, 2021). |
| 10.28 | Master Equipment Finance Agreement, dated as of December 30, 2021 by and between Soluna MC Borrowing 2021-1 LLC and NYDIG ABL LLC (incorporated by reference from Exhibit 10.1 of the Company’s Form 8-K Report filed January 18, 2022). |
| 10.29 | Digital Asset Account Control Agreement, effective as of December 30, 2021 by and among Soluna MC Borrowing 2021-1 LLC, NYDIG ABL LLC and NYDIG Trust Company LLC (incorporated by reference from Exhibit 10.2 of the Company’s Form 8-K Report filed January 18, 2022). |
| 10.30 | Guaranty Agreement, dated as of December 30, 2021 by Soluna MC LLC, in favor of NYDIG ABL LLC (incorporated by reference from Exhibit 10.3 of the Company’s Form 8-K Report filed January 18, 2022). |
| 10.31 | Consent and Waiver Agreement, dated January 13, 2022, by and among the Company and the purchasers signatory to the Securities Purchase Agreement, dated as of October 20, 2021 (incorporated by reference from Exhibit 10.4 of the Company’s Form 8-K Report filed January 18, 2022). |
| 10.32+ | Employment Agreement, by and between Soluna Holdings, Inc. and Michael Toporek, dated as of January 14, 2022 (incorporated by reference from Exhibit 10.1 of the Company’s Form 8-K Report filed January 21, 2022). |
| 10.33 | Form of Underwriter’s Warrant (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 26, 2022). |
| 10.34 | Form of Addendum by and between the Company, Collateral Agent, and each purchaser identified on Schedule A hereto (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 20, 2022). |
| 10.35 | Form of Securities Purchase Agreement by and among the Company and the purchasers signatory thereto (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 20, 2022). |
| 10.36 | Form of Leak-Out Agreement by and between the Company and the signatory thereto (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on July 20, 2022). |
| 10.37 | Contribution Agreement by and between Soluna Holdings, Inc., Soluna SLC Fund I Projects Holdco, LLC, Soluna DV Devco, LLC, and Soluna DVSL ComputeCo, LLC, dated as of August 5, 2022 (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on August 11, 2022). |
| 10.38 | Form of Addendum Amendment by and Between the Company and the signatories thereof, dated September 13, 2022 (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 14, 2022). |
| 10.39 | Form of Series B Consent by and between the Company and the signatory thereof, dated September 13, 2022 (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 14, 2022). |
| 10.40 | Form of Securities Purchase Agreement by and between the Company and the purchasers named therein, dated December 5, 2022 (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on December 5, 2022). |
| 10.41 | Form of Warrant (Incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on December 5, 2022). |
| 10.42+ | Soluna Holdings, Inc. Third Amended and Restated 2021 Stock Incentive Plan (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 13, 2023) |
| 10.43+ | Soluna Holdings, Inc. 2023 Stock Incentive Plan (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 13, 2023) |
| 10.44 | Purchase of Membership Interests of Soluna DVSL Computeco LLC dated March 10, 2023 (incorporated by reference from Exhibit 10.64 of the Company’s Form 10-K Report for the year ended December 31, 2022 filed on March 31, 2023 (the “2022 Form 10-K”)) |
| 10.45 | Fourth Amended and Restated LLC Agreement Soluna DVSL Computeco LLC (incorporated by reference from Exhibit 10.65 of the 2022 Form 10-K) |
| 10.47 | Amended and Restated Contribution Agreement dated March 10, 2023 (incorporated by reference from Exhibit 10.67 of the 2022 Form 10-K) |
| 10.48 | Power Purchase Agreement with Lighthouse Electric Cooperative, Inc. dated February 24, 2023 (incorporated by reference from Exhibit 10.68 of the 2022 Form 10-K) |
| 10.49 | Second Addendum Amendment dated as of March 3, 2023 with Convertible Noteholders (incorporated by reference from Exhibit 10.69 of the 2022 Form 10-K) |
| 10.50 | Second Amended Agreement dated May 11, 2023 (incorporated by reference to Exhibit 10.70 to the 2023 First Quarter Form 10-Q) |
| 10.51 | Contribution Agreement by and among Navitas West Texas Investments, SPV, LLC, Soluna Computing, Inc., and Soluna DV ComputeCo, LLC dated as May 9, 2023 (incorporated by reference to Exhibit 10.71 to the 2023 First Quarter Form 10-Q) |
| 10.52 | Amended and Restated Limited Liability Company Agreement of Soluna DV ComputeCo, LLC dated as May 9, 2023 (incorporated by reference to Exhibit 10.72 to the 2023 First Quarter Form 10-Q) |
| 10.53+ | Amended and Restated 2023 Stock Incentive Plan (incorporated by reference to Appendix B to the definitive proxy statement filed on May 30, 2023) |
| 10.54 | Dividend Payment Agreement with the holder of the Series B Preferred Stock (incorporated by reference to Exhibit 10.75 to the 2023 Second Quarter Form 10-Q) |
| 10.55 | Third Amendment Agreement with the holders of the Company’s Convertible Notes (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on November 22, 2023) |
| 10.56+ | Amended and Restated Employment Agreement dated November 20, 2023 with John Belizaire (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on November 29, 2023) |
| 10.57+ | Amendment No. 1 to Employment Agreement with Michael Toporeck (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on November 29, 2023) |
| 10.58 | Fourth Amendment Agreement with holders of the Company’s Convertible Notes (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 1, 2024) |
| 10.59 | Security Agreement between SDI Borrowing - 1, LLC and Soluna2 SLC Fund II Project Holdco LLC, dated as of May 16, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on May 22, 2024) |
| 10.60 | Equipment Loan Agreement between SDI Borrowing - 1, LLC and Soluna2 SLC Fund II Project Holdco LLC, dated as of May 16, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on May 22, 2024) |
| 10.61 | Form of Common Award Agreement- 2-year vest, 50% per year, no performance (incorporated by reference to Exhibit 10.82 to the Company’s Form 10-Q for the period ended March 31, 2024 (the “2024 First Quarter Form 10-Q”)) |
| 10.62 | Form of Common Award Agreement- 3-year time vesting (2024 fixed date start) (incorporated by reference to Exhibit 10.83 to the 2024 First Quarter Form 10-Q) |
| 10.63 | Form of Common Award Agreement- 3-year time vesting (2025 fixed date start) (incorporated by reference to Exhibit 10.84 to the 2024 First Quarter Form 10-Q) |
| 10.64 | Form of Common Award Agreement- 3-year vest, 33% per year, no performance (incorporated by reference to Exhibit 10.85 to the 2024 First Quarter Form 10-Q) |
| 10.65 | Form of Common Award Agreement- 4-year vest, 25% per year, no performance (incorporated by reference to Exhibit 10.86 to the 2024 First Quarter Form 10-Q) |
| 10.66 | Form of Common Award Agreement- 5-year vest, 20% per year, no performance (incorporated by reference to Exhibit 10.87 to the 2024 First Quarter Form 10-Q) |
| 10.67 | Form of Common Award Agreement- Separation vesting (incorporated by reference to Exhibit 10.88 to the 2024 First Quarter Form 10-Q) |
| 10.68 | Form of Preferred Award Agreement- Separation vesting (incorporated by reference to Exhibit 10.89 to the 2024 First Quarter Form 10-Q) |
| 10.69 | Form of Preferred Award Agreement- Time vesting, June 1, 2025 Start date (incorporated by reference to Exhibit 10.90 to the 2024 First Quarter Form 10-Q) |
| 10.70 | Form of Preferred Award Agreement- Time vesting, Start at 12 months (incorporated by reference to Exhibit 10.91 to the 2024 First Quarter Form 10-Q) |
| 10.71 | Form of Preferred Award Agreement- Time vesting, Start at 18 months (incorporated by reference to Exhibit 10.92 to the 2024 First Quarter Form 10-Q) |
| 10.72 | Form of Preferred Award Agreement- Time vesting, June 1, 2024 Start date (incorporated by reference to Exhibit 10.93 to the 2024 First Quarter Form 10-Q) |
| 10.73 | Master Form of True Up Common Award Agreement- 2-year time based vesting (incorporated by reference to Exhibit 10.94 to the 2024 First Quarter Form 10-Q) |
| 10.74 | Master Form of True Up Common Award Agreement- 3-year time based vesting (incorporated by reference to Exhibit 10.95 to the 2024 First Quarter Form 10-Q) |
| 10.75 | Master Form of True Up Common Award Agreement- 3-year time vesting (2024 fixed date start) (incorporated by reference to Exhibit 10.96 to the 2024 First Quarter Form 10-Q) |
| 10.76 | Master Form of True Up Common Award Agreement- 3-year time vesting (2025 fixed date start) (incorporated by reference to Exhibit 10.97 to the 2024 First Quarter Form 10-Q) |
| 10.77 | Master Form of True Up Common Award Agreement- 4-year time based vesting (incorporated by reference to Exhibit 10.98 to the 2024 First Quarter Form 10-Q) |
| 10.78 | Master Form of True Up Common Award Agreement- 5-year time based vesting (incorporated by reference to Exhibit 10.99 to the 2024 First Quarter Form 10-Q) |
| 10.79 | Master Form of True Up Common Award Agreement- Separation vesting (incorporated by reference to Exhibit 10.100 to the 2024 First Quarter Form 10-Q) |
| 10.80 | Soluna Holdings, Inc. Fourth Amended and Restated 2021 Stock Incentive Plan (incorporated by reference to the definitive proxy statement filed with the SEC on April 29, 2024) |
| 10.81 | Soluna Holdings, Inc. Fifth Amended and Restated 2021 Stock Incentive Plan (incorporated by reference to the definitive proxy statement filed with the SEC on October 28, 2024) |
| 10.82 | Soluna Holdings, Inc. Second Amended and Restated 2023 Stock Incentive Plan (incorporated by reference to the definitive proxy statement filed with the SEC on April 29, 2024) |
| 10.83 | Side Letter Agreement, dated July 22, 2023 by and between Soluna Digital, Inc. and Soluna2 SLC Fund II Project Holdco LLC (incorporated by reference to Exhibit 10.101 to the Company’s Form 10-Q for the period ended June 30, 2024 (the “2024 Second Quarter Form 10-Q”)) |
| 10.84 | Payoff Letter between SDI SL Borrowing - 1, LLC and Soluna2 SLC Fund II Project Holdco LLC, dated July 22, 2023 (incorporated by reference to Exhibit 10.102 to the 2024 Second Quarter Form 10-Q) |
| 10.85 | Assignment of Equipment and Debt Agreement by and between Soluna DVSL II Computeco, LLC and SDI SL Borrowing - 1, LLC, dated July 22, 2024 (incorporated by reference to Exhibit 10.103 to the 2024 Second Quarter Form 10-Q) |
| 10.86 | Assignment of Equipment Agreement by and between Soluna EPC Services, LLC and Soluna DVSL II Computeco, LLC, dated July 22, 2024 (incorporated by reference to Exhibit 10.104 to the 2024 Second Quarter Form 10-Q) |
| 10.87 | HPE Greenlake Services Custom Statement of Work, dated June 18, 2024 (incorporated by reference to Exhibit 10.105 to the 2024 Second Quarter Form 10-Q) |
| 10.88# | Promissory Note between Soluna AL Cloudco, LLC and [***], dated June 20, 2024 (incorporated by reference to Exhibit 10.106 to the 2024 Second Quarter Form 10-Q) |
| 10.89# | Note Purchase Agreement by and among Soluna AL Cloudco, LLC, Soluna Cloud, Inc., Soluna Holdings, Inc. and [***] (incorporated by reference to Exhibit 10.107 to the 2024 Second Quarter Form 10-Q) |
| 10.90# | Guaranty Agreement between Soluna Cloud, Inc. and [***] dated June 20, 2024 (incorporated by reference to Exhibit 10.108 to the 2024 Second Quarter Form 10-Q) |
| 10.91 | First Amendment to Note Purchase Agreement, dated July 12, 2024, by and between Soluna AL CloudCo, LLC, Soluna Cloud, Inc, Soluna Holdings, Inc. and GreenCloud Partners, LLC |
| 10.92 | Standby Equity Purchase Agreement between the Company and YA PN, LTD. (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 9, 2024) |
| 10.93 | Registration Rights Agreement between the Company and YA PN, LTD. (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 9, 2024) |
| 10.94 | Consent, Waiver, and Mutual Release Agreement, dated October 1, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 10.95 | Form of Payment Agreement by and between the Company and Alpha Capital Anstalt, dated October 1, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 10.96 | Form of Payment Agreement by and between the Company and 3i, LP, dated October 1, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 10.97 | Form of Payment Agreement by and between the Company and Supereight Capital Holdings Ltd., dated October 1, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 10.98 | Form of Assignment and Assumption Agreement, dated October 1, 2024 (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 10.99 | Amendment No. 1 to the Securities Purchase Agreement with the Series B Holder (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on October 3, 2024) |
| 10.100 | General Release Agreement by and between the Company and Univest Securities, LLC, dated October 1, 2024 (incorporated by reference to Exhibit 10.119 to the Company’s Registration Statement on Form S-1 filed with the SEC on November 12, 2024). |
| 10.101 | Conversion Agreement, dated December 12, 2024, between the Company and the Noteholders |
| 10.102 | Consent and Waiver Agreement between the Company and the Series B Holder, dated October 1, 2024 (incorporated by reference to Exhibit 10.120 to the Company’s Registration Statement on Form S-1 filed with the SEC on January 15, 2025). |
| 10.103 | Loan Agreement, dated as of March 12, 2025, by and among Soluna SW LLC, Soluna SW Holdings, LLC and Galaxy Digital LLC (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 18, 2025) |
| 10.104 | Security Agreement, dated as of March 12, 2025, by and among Soluna SW LLC, Soluna SW Holdings, LLC and Galaxy Digital LLC (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 18, 2025) |
| 10.105 | Limited Guaranty Agreement, dated as of March 12, 2025, between Soluna Digital, Inc. and Galaxy Digital LLC (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 18, 2025) |
| 10.106 | Modification Agreement, dated March 21, 2025, by and between Soluna AL CloudCo, LLC, Soluna Cloud, Inc., the Company, and the Investor (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on March 27, 2025) |
| 10.107 | Form of Securities Purchase Agreement (incorporated by reference to Exhibit 10.113 to the Company’s Registration Statement on Form S-1/A (File No. 333-287519) filed on June 16, 2025). |
| 10.108 | Consulting Agreement, entered into on August 8, 2025 and effective August 21, 2025, between Soluna Holdings, Inc. and David Michaels (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on August 8, 2025) |
| 10.109**^ | Credit and Guaranty Agreement, dated as of September 12, 2025, by and among the Company and the parties thereto (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 16, 2025) |
| 10.110 | Registration Rights Agreement, dated September 12, 2025 between the Company and Generate Strategic Credit Master Fund I-B, L.P. (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 16, 2025) |
| 10.111 | Board Observer Letter, dated September 12, 2025, between the Company and Generate Strategic Credit Master Fund I-A, L.P. (incorporated by reference to the Company’s Current Report on Form 8-K filed with the SEC on September 16, 2025) |
| 10.112 | Form of Securities Purchase Agreement, dated December 4, 2025, by and among the Company and the purchasers party thereto (incorporated by reference to the Company's Current Report on Form 8-K filed with the SEC on December 5, 2025). |
| 10.113 | Offer Letter, dated December 22, 2025 and effective March 9, 2026, between Soluna Holdings, Inc. and Michael Picchi (incorporated by reference to the Company's Current Report on Form 8-K filed with the SEC on January 20, 2026). |
| 10.114 | Standby Equity Purchase Agreement between the Company and YA PN, Ltd. dated March 24, 2026 |
| 19 | Soluna Holdings, Inc. Insider Trading Policy |
| 21 | Subsidiaries of Soluna Holdings, Inc. |
| 23.1 | Consent of UHY LLP |
| 31.1 | Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| 31.2 | Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| 32.1† | Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |
| 32.2† | Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |
| 97.1 | Soluna 2023 SLNH Clawback Policy (incorporated by reference to Exhibit 97.1 to the Company’s Annual Report on Form 10-K filed with the SEC on April 1, 2024). |
| 101.INS | Inline XBRL Instance Document |
| 101.SCH | Inline XBRL Taxonomy Extension Schema Document |
| 101.CAL | Inline XBRL Taxonomy Extension Calculation Linkbase Document |
| 101.DEF | Inline XBRL Taxonomy Definition Linkbase Document |
| 101.LAB | Inline XBRL Taxonomy Extension Label Linkbase Document |
| 101.PRE | Inline XBRL Taxonomy Extension Presentation Linkbase Document |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |
#Portions of the exhibit, marked by brackets, have been omitted because the omitted information (a) is not material and (b) is the type that the Company treats as private or confidential. The Registrant hereby undertakes to furnish supplementally a copy of any of the omitted schedules and exhibits to the SEC on a confidential basis upon request.
+Represents management contract or compensation plan or arrangement.
†This certification is not deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that the registrant specifically incorporates it by reference.
** Annexes, schedules and/or exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company hereby undertakes to furnish supplementally a copy of any of the omitted schedules and exhibits to the SEC on a confidential basis upon request.
^ The Company has omitted portions of the referenced exhibit pursuant to Item 601(b) of Regulation S-K, because they (a) are not material and (b) are the type that the Company treats as private or confidential.
The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.