Soluna Holdings, Inc SEC filings SLNH
Soluna Holdings, Inc has 1,001 filings in SEC EDGAR's recent list, going back to Dec 26, 2007. Its latest annual report, Form ARS, was filed on Aug 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 26, 2026 (regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-8 | Employee stock plan registration | Jul 28, 2026 | — |
| 424B3 | Prospectus | May 11, 2026 | — |
| S-3 | Shelf registration | Apr 29, 2026 | — |
| 424B3 | Prospectus | Apr 22, 2026 | — |
| 424B3 | Prospectus | Apr 20, 2026 | — |
| S-1 | Registration statement | Apr 15, 2026 | — |
| S-3 | Shelf registration | Apr 15, 2026 | — |
| S-8 | Employee stock plan registration | Apr 8, 2026 | — |
| 424B5 | Prospectus supplement | Apr 1, 2026 | — |
| S-3/A | Filing | Mar 30, 2026 | — |
| S-3 | Shelf registration | Mar 9, 2026 | — |
| 424B5 | Prospectus supplement | Dec 5, 2025 | — |
| S-8 | Employee stock plan registration | Nov 21, 2025 | — |
| 424B3 | Prospectus | Nov 17, 2025 | — |
| 424B3 | Prospectus | Nov 12, 2025 | — |
| S-1 | Registration statement | Oct 27, 2025 | — |
| S-3/A | Filing | Oct 16, 2025 | — |
| S-3 | Shelf registration | Sep 26, 2025 | — |
| 424B5 | Prospectus supplement | Sep 23, 2025 | — |
| 424B5 | Prospectus supplement | Sep 2, 2025 | — |
| S-8 | Employee stock plan registration | Aug 22, 2025 | — |
| 424B4 | Prospectus | Jul 17, 2025 | — |
| S-1/A | Amended registration statement | Jul 11, 2025 | — |
| S-1/A | Amended registration statement | Jun 16, 2025 | — |
| S-8 | Employee stock plan registration | May 30, 2025 | — |
| S-1 | Registration statement | May 22, 2025 | — |
| 424B5 | Prospectus supplement | Apr 29, 2025 | — |
| 424B3 | Prospectus | Apr 25, 2025 | — |
| S-3 | Shelf registration | Apr 18, 2025 | — |
| POS AM | Filing | Apr 18, 2025 | — |
| 424B3 | Prospectus | Feb 5, 2025 | — |
| S-1/A | Amended registration statement | Feb 3, 2025 | — |
| S-1/A | Amended registration statement | Jan 15, 2025 | — |
| S-1/A | Amended registration statement | Dec 16, 2024 | — |
| S-1/A | Amended registration statement | Nov 12, 2024 | — |
| S-1 | Registration statement | Oct 9, 2024 | — |
| S-8 | Employee stock plan registration | Feb 14, 2024 | — |
| 424B5 | Prospectus supplement | Dec 5, 2022 | — |
| 424B5 | Prospectus supplement | Oct 26, 2022 | — |
| 424B5 | Prospectus supplement | Oct 21, 2022 | — |
| 424B7 | Filing | Oct 4, 2022 | — |
| 424B7 | Filing | Jul 25, 2022 | — |
| 424B5 | Prospectus supplement | Jun 9, 2022 | — |
| 424B5 | Prospectus supplement | Apr 29, 2022 | — |
| 424B5 | Prospectus supplement | Apr 29, 2022 | — |
| FWP | Free writing prospectus | Apr 26, 2022 | — |
| 424B5 | Prospectus supplement | Apr 21, 2022 | — |
| 424B7 | Filing | Mar 1, 2022 | — |
| 424B8 | Filing | Feb 14, 2022 | — |
| S-3 | Shelf registration | Feb 9, 2022 | — |
| 424B5 | Prospectus supplement | Dec 27, 2021 | — |
| 424B5 | Prospectus supplement | Dec 20, 2021 | — |
| 424B7 | Filing | Dec 17, 2021 | — |
| S-3/A | Filing | Dec 13, 2021 | — |
| S-3 | Shelf registration | Nov 30, 2021 | — |
| S-8 | Employee stock plan registration | Oct 29, 2021 | — |
| 424B4 | Prospectus | Aug 20, 2021 | — |
| S-1MEF | Filing | Aug 18, 2021 | — |
| S-1/A | Amended registration statement | Aug 16, 2021 | — |
| S-1/A | Amended registration statement | Aug 13, 2021 | — |
| S-1/A | Amended registration statement | Jul 23, 2021 | — |
| S-1/A | Amended registration statement | Jul 19, 2021 | — |
| S-1 | Registration statement | Jun 22, 2021 | — |
| 424B1 | Filing | Apr 28, 2021 | — |
| S-1/A | Amended registration statement | Apr 21, 2021 | — |
| S-1/A | Amended registration statement | Apr 12, 2021 | — |
| S-1/A | Amended registration statement | Apr 2, 2021 | — |
| S-1 | Registration statement | Mar 10, 2021 | — |
| S-8 | Employee stock plan registration | Dec 18, 2020 | — |
| POS AM | Filing | Mar 16, 2018 | — |
| POS AM | Filing | Mar 16, 2018 | — |
| POS AM | Filing | Mar 16, 2018 | — |
| POS AM | Filing | Mar 16, 2018 | — |
| S-8 POS | Filing | Mar 14, 2018 | — |
| S-8 POS | Filing | Mar 14, 2018 | — |
| S-8 POS | Filing | Mar 14, 2018 | — |
| S-8 POS | Filing | Mar 14, 2018 | — |
| S-8 POS | Filing | Mar 14, 2018 | — |
| S-8 POS | Filing | Mar 14, 2018 | — |
| S-3/A | Filing | Mar 9, 2018 | — |
| S-3/A | Filing | Mar 9, 2018 | — |
| S-1/A | Amended registration statement | Mar 9, 2018 | — |
| S-1/A | Amended registration statement | Mar 9, 2018 | — |
| S-1/A | Amended registration statement | May 5, 2017 | — |
| S-8 POS | Filing | Apr 18, 2017 | — |
| S-8 POS | Filing | Apr 18, 2017 | — |
| S-1 | Registration statement | Apr 18, 2017 | — |
| S-8 | Employee stock plan registration | Jun 24, 2014 | — |
| S-8 | Employee stock plan registration | Jul 18, 2012 | — |
| S-8 | Employee stock plan registration | Jul 8, 2011 | — |
| S-8 | Employee stock plan registration | Sep 18, 2009 | — |
| S-1/A | Amended registration statement | Jul 3, 2008 | — |
| S-1/A | Amended registration statement | May 22, 2008 | — |
| S-1 | Registration statement | Mar 27, 2008 | — |
Showing 94 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Finance Services (SIC 6199)
- Listed as
- SLNH (Nasdaq), SLNHP (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- NV
- Headquarters
- Albany, NY
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 64463
- Former names
- MECHANICAL TECHNOLOGY INC (until Oct 29, 2021)
Other Finance Services companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.