Company: SLNH
Filing Date: 2025-08-22
Form Type: S-8
Source: 0001641172-25-025227
Chunk: 3

Company: Soluna Holdings, Inc
Filing Date: 2025-08-22
Form: S-8
Chunk 3
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 to be incorporated by reference herein, modifies or supersedes such statement.

Item 8. Exhibits.

For a list of exhibits, see the Exhibit Index in this Registration Statement, which is incorporated into this Item by reference.

<div align='center'>EXHIBIT INDEX</div>

| Exhibit 
 No.     
 4.1     
 4.2     |     | Exhibit                                                                                                                                                                                                                                                                                                                    
 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”)).                                                                      
 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).                                                                                                                                 |
|:--------|:----|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.3     |     | 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).                                                                                                |
| 4.4     |     | Bylaws of Soluna Holdings, Inc., formerly known as Mechanical Technology, Incorporated, (incorporated by reference from Exhibit 3.2 of the 2020 Form 10-K).                                                                                                                                                                |
| 4.5     |     | 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).                                        |
| 4.6     |     | 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). |
| 4.7     |     | Certificate of Amendment to Certificate of Design