Company: SLNH
Filing Date: 2025-06-16
Form Type: S-1/A
Source: 0001641172-25-015179
Chunk: 0

Company: Soluna Holdings, Inc
Filing Date: 2025-06-16
Form: S-1/A
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission on June 16, 2025</div>

Registration No. 333-287519

<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT NO. 1 TO

FORM S- 1

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933</div>

| SOLUNA HOLDINGS,                                       
 INC.                                                   |
| (Exact name of registrant as specified in its charter) |

| Nevada                          |     |                         7374 |     | 14-1462255         |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -Primary Standard Industrial 
   Classification Code Number |     | -I.R.S. Employer   
 Identification No. |

<div align='center'>325 Washington Avenue Extension

Albany, New York 12205

Telephone: (516) 216-9257

(Address, including zip code, and telephone number,
including area code, of registrant’s principal executive offices)

John Belizaire

Chief Executive Officer

Soluna Holdings, Inc.

325 Washington Ave Extension

Albany, New York 12205

(516) 216-9257

(Name, address, including zip code, and telephone
number, including area code, of agent for service)

Please send copies of all communications to:</div>

| Steven E. Siesser, Esq.     
 Daniel L. Forman, Esq.      
 Lowenstein Sandler LLP      
 1251 Avenue of the Americas 
 New York, New York 10020    
 (212) 204-8688              |

<div align='center'>Approximate date of commencement of proposed sale to the public:

As soon as practicable after the effective date of this registration statement.</div>

If any of the securities being registered on this
Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box:
☒

If this Form is filed to register additional securities
for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration
statement number of the earlier effective registration statement for the same offering: ☐

If this Form is a post-effective amendment filed
pursuant to Rule 462(c) under the Securities Act, check the