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Soluna Holdings, Inc
Nasdaq: SLNH, Nasdaq: SLNHP · Finance Services · Albany, NY
- Revenue
- $29.72M
- -21.8% vs. prior year
- Net income
- -$53.41M
- -179.7% net margin
- Total assets
- $187.9M
- Diluted EPS
- -$2.38
Company details
As reported to the SEC
- SEC CIK
- 64463
- Stock
- Nasdaq: SLNH, Nasdaq: SLNHP
- Industry (SIC)
- Finance Services (6199)
- Headquarters
- 325 Washington Avenue Extension, Albany, NY 12205
- Incorporated in
- Nevada
- Fiscal year end (SEC record)
- December 31
- Filer status
- Non-accelerated filer, Smaller reporting company
- Phone
- (518) 218-2500
- Employer ID (EIN)
- 14-1462255
- Last annual report
- 03/30/2026
- Last quarterly report
- 08/13/2026
Formerly: MECHANICAL TECHNOLOGY INC (until 10/29/2021)
Annual financials
U.S. dollars, as tagged in each annual report's XBRL data. Later restatements replace earlier numbers. Select a date to open the filing.
| Fiscal year ended | 12/31/2025 | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 |
|---|---|---|---|---|---|
| Revenue | $29.72M | $38.02M | $21.07M | $28.55M | $14.35M |
| Gross profit | $1.8M | -$23.74M | $2.77M | Not reported | Not reported |
| Operating income | -$33.68M | -$47.52M | -$20.24M | -$84.79M | -$4.48M |
| Net income | -$53.41M | -$63.33M | -$29.2M | -$98.72M | -$5.26M |
| Diluted earnings per share | -$2.38 | -$14.94 | -$27.79 | -$174.41 | -$0.50 |
| Total assets | $187.9M | $88.04M | $91.28M | $84.96M | $117.7M |
| Total liabilities | $75.7M | $60.68M | $37.92M | $38.69M | $26.71M |
| Shareholders' equity | $53.55M | -$12.48M | $26.51M | $41.87M | $90.99M |
| Cash and cash equivalents | $76.42M | $7.84M | $6.37M | $1.14M | $10.26M |
| Long-term debt | $17.9M | $7.06M | Not reported | $13M | Not reported |
| Cash from operations | -$9.15M | -$5.07M | -$2.99M | -$6.12M | $4.63M |
| Capital expenditures | $28.07M | $8.85M | $12.71M | $63.68M | $45.79M |
Federal and state records filed under the name Soluna Holdings, Inc
Matched by the company name and by the subsidiary names it lists in SEC filings and other public records, after removing endings like Inc., Corp. and Holdings. Records marked Subsidiary were filed under a subsidiary name. A subsidiary that is not listed in those records is not included, and an unrelated business with the same name can appear.
Work visa sponsorship
Certified H-1B and PERM green card filings with the Department of Labor
| Employer on filing | H-1B | PERM |
|---|---|---|
| Soluna Holdings, Inc.Albany, NJ | 1 | 0 |
Trucking registrations
Motor carrier registrations with the Federal Motor Carrier Safety Administration
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| Carrier | USDOT | Power units |
|---|---|---|
| Soluna Holdings LLCPrince George, VA | 4540559 | 0 |
Subsidiaries
27 companies that Soluna Holdings, Inc owns or controls, as listed in its SEC annual report (Exhibit 21), GLEIF ownership records or USAspending
| Subsidiary | Listed in |
|---|---|
| SDI SL Borrowing - 1, LLC | SEC 10-K |
| Soluna AL CloudCo, LLC Soluna GH CloudCo, LLC | SEC 10-K |
| Soluna Callisto Holdings, Inc. | SEC 10-K |
| Soluna Cloud, Inc. | SEC 10-K |
| Soluna DV ComputeCo, LLC | SEC 10-K |
| Soluna DV Services, LLC | SEC 10-K |
| Soluna DV Wind JVCo, LLC Soluna DV Wind Holdco, LLC Soluna DV Wind SponsorCo, LLC | SEC 10-K |
| Soluna DVSL ComputeCo, LLC | SEC 10-K |
| Soluna DVSL HoldCo, LLC | SEC 10-K |
| Soluna DVSL II ComputeCo, LLC | SEC 10-K |
| Soluna DVSL II HoldCo, LLC | SEC 10-K |
| Soluna DVSL II JVCo, LLC | SEC 10-K |
| Soluna DVSL JVCo, LLC | SEC 10-K |
| Soluna Digital, Inc. | SEC 10-K |
| Soluna EPC Services II , LLC | SEC 10-K |
| Soluna EPC Services, LLC | SEC 10-K |
| Soluna Energy, Inc. Soluna HPC, Inc. Soluna Wind Holdings, Inc. | SEC 10-K |
| Soluna Global Services, Inc. | SEC 10-K |
| Soluna KK Energy HoldCo, LLC Soluna DV Energy HoldCo, LLC Soluna HL Energy ServiceCo, LLC Soluna EO Energy ServiceCo, LLC | SEC 10-K |
| Soluna KK Energy ServiceCo, LLC | SEC 10-K |
| Soluna KK I ComputeCo, LLC | SEC 10-K |
| Soluna KK II HPC ComputeCo, LLC | SEC 10-K |
| Soluna KKSL HoldCo, LLC | SEC 10-K |
| Soluna KKSL JVCo, LLC Soluna DV Devco, LLC | SEC 10-K |
| Soluna MC, LLC | SEC 10-K |
| Soluna SW Holdings, LLC | SEC 10-K |
| Soluna US Services, LLC | SEC 10-K |
Recent filings
160 recent filings on record; insider ownership forms (3, 4, 5 and 144) are not listed here
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70 insider ownership reports (Forms 3, 4, 5 and 144) were filed about Soluna Holdings, Inc in the last 12 months. They list trades by officers, directors and large holders; see them on SEC EDGAR.
Other finance services
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| Qfin Holdings, Inc.QFIN | Pudong New Area, Shanghai, China | $2.75B | $854.5M |
| Bakkt, Inc.BKKT | Atlanta, GA | $2.34B | -$107.2M |
Profile refreshed Oct 26, 2026; financials refreshed Oct 22, 2026.
Frequently asked questions
- What is Soluna Holdings, Inc's CIK number?
- Soluna Holdings, Inc's SEC Central Index Key (CIK) is 64463.
- What is Soluna Holdings, Inc's stock ticker?
- Soluna Holdings, Inc trades as Nasdaq: SLNH, Nasdaq: SLNHP.
- What was Soluna Holdings, Inc's revenue?
- Soluna Holdings, Inc reported revenue of $29.72M for the fiscal year ended Dec 31, 2025, -21.8% from the year before.
- When does Soluna Holdings, Inc's fiscal year end?
- Soluna Holdings, Inc's fiscal year end on file with the SEC is December 31; its most recent fiscal year ended Dec 31, 2025.
- Where is Soluna Holdings, Inc headquartered?
- Soluna Holdings, Inc's principal executive office on file with the SEC is in Albany, NY.
- What companies does Soluna Holdings, Inc own?
- Soluna Holdings, Inc lists 27 subsidiaries in its SEC filings and other public records, including SDI SL Borrowing - 1, LLC, Soluna AL CloudCo, LLC Soluna GH CloudCo, LLC, Soluna Callisto Holdings, Inc.
- Does Soluna Holdings, Inc sponsor H-1B visas?
- Department of Labor records show 1 certified H-1B filings and 0 certified PERM filings under the name Soluna Holdings, Inc.
Source: U.S. Securities and Exchange Commission, EDGAR submissions and XBRL company facts · Last updated 10/26/2026