Arq, Inc. SEC filings ARQ
Arq, Inc. has 813 filings in SEC EDGAR's recent list, going back to Mar 14, 2011. Its latest annual report, Form ARS, was filed on Apr 28, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-8 | Employee stock plan registration | Sep 17, 2026 | — |
| S-8 | Employee stock plan registration | Jun 26, 2026 | — |
| 424B5 | Prospectus supplement | Sep 20, 2024 | — |
| 424B5 | Prospectus supplement | Sep 19, 2024 | — |
| S-3 | Shelf registration | Aug 23, 2024 | — |
| S-8 | Employee stock plan registration | Jul 1, 2024 | — |
| 424B3 | Prospectus | Jun 6, 2024 | — |
| S-3 | Shelf registration | May 28, 2024 | — |
| S-3/A | Filing | Jan 26, 2024 | — |
| S-1 | Registration statement | Jan 4, 2024 | — |
| S-8 | Employee stock plan registration | Jul 25, 2023 | — |
| S-8 POS | Filing | Aug 11, 2022 | — |
| S-8 | Employee stock plan registration | Jun 30, 2022 | — |
| S-8 | Employee stock plan registration | Jun 29, 2017 | — |
| 424B2 | Prospectus | Nov 19, 2013 | — |
| 424B5 | Prospectus supplement | Nov 14, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| POS AM | Filing | Jul 3, 2013 | — |
| POS AM | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| S-8 POS | Filing | Jul 3, 2013 | — |
| 424B3 | Prospectus | Apr 25, 2013 | — |
| S-4/A | Filing | Apr 15, 2013 | — |
| S-4 | Registration for a merger or exchange | Mar 25, 2013 | — |
| S-4/A | Form s-4/a | Apr 27, 2012 | — |
| S-4/A | Form s-4/a | Apr 20, 2012 | — |
| S-4 | Registration for a merger or exchange | Mar 16, 2012 | — |
| S-4 | Registration for a merger or exchange | Mar 14, 2011 | — |
Showing 33 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.
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Company profile
- Industry
- Miscellaneous Chemical Products (SIC 2890)
- Listed as
- ARQ (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Greenwood Village, CO
- SEC filer status
- Accelerated filer, Smaller reporting company
- SEC CIK
- 1515156
- Former names
- Advanced Emissions Solutions, Inc. (until Jan 31, 2024)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.