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 |
|---|---|---|---|
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 4, 2026 |
| 4 | Insider transaction | Sep 8, 2026 | Sep 3, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Jul 31, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Aug 1, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Aug 1, 2026 |
| 3 | Initial insider ownership | Aug 4, 2026 | Jul 27, 2026 |
| 4 | Insider transaction | Jul 23, 2026 | Jul 17, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 3 | Initial insider ownership | Jun 24, 2026 | Jun 14, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 27, 2026 | — |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 24, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 16, 2026 | Mar 12, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 12, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 27, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 28, 2026 | — |
| 4 | Insider transaction | Nov 13, 2025 | Nov 10, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 12, 2025 | Nov 10, 2025 |
| 4 | Insider transaction | Oct 6, 2025 | Sep 25, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 18, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 28, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 27, 2025 | May 23, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 13, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 12, 2025 |
| 4 | Insider transaction | May 13, 2025 | May 9, 2025 |
| 4 | Insider transaction | Apr 4, 2025 | Apr 2, 2025 |
| 3 | Initial insider ownership | Apr 4, 2025 | Apr 2, 2025 |
| 4 | Insider transaction | Mar 25, 2025 | Mar 23, 2025 |
| 4 | Insider transaction | Mar 25, 2025 | Mar 23, 2025 |
| 4 | Insider transaction | Mar 25, 2025 | Mar 23, 2025 |
| 4 | Insider transaction | Mar 25, 2025 | Mar 23, 2025 |
| 4 | Insider transaction | Mar 25, 2025 | Mar 23, 2025 |
| 4 | Insider transaction | Feb 14, 2025 | Feb 12, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 29, 2025 | — |
| 4 | Insider transaction | Nov 27, 2024 | Nov 26, 2024 |
| 4 | Insider transaction | Nov 27, 2024 | Nov 26, 2024 |
| 4 | Insider transaction | Nov 27, 2024 | Nov 26, 2024 |
| 4 | Insider transaction | Nov 21, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 21, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Sep 24, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 18, 2024 | Sep 18, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Jul 25, 2024 | Jul 23, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| SC 13G | Ownership over 5% (passive) | May 30, 2024 | — |
| 3 | Initial insider ownership | May 2, 2024 | Apr 26, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| 4/A | Form 4/a | Mar 27, 2024 | Mar 18, 2024 |
| 4/A | Form 4/a | Mar 27, 2024 | Mar 23, 2024 |
| 4/A | Form 4/a | Mar 27, 2024 | Mar 23, 2024 |
| 4/A | Form 4/a | Mar 27, 2024 | Mar 23, 2024 |
| 4 | Insider transaction | Mar 26, 2024 | Mar 23, 2024 |
| 4 | Insider transaction | Mar 26, 2024 | Mar 23, 2024 |
| 4 | Insider transaction | Mar 26, 2024 | Mar 23, 2024 |
| 4 | Insider transaction | Mar 26, 2024 | Mar 18, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jan 31, 2024 | — |
| 4/A | Form 4/a | Jan 25, 2024 | Jul 20, 2023 |
| 4/A | Form 4/a | Jan 25, 2024 | Mar 9, 2023 |
| 4 | Insider transaction | Nov 21, 2023 | Nov 17, 2023 |
| 4/A | Form 4/a | Nov 21, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 16, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 3 | Initial insider ownership | Nov 15, 2023 | Nov 6, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 18, 2023 |
| 3 | Initial insider ownership | Sep 20, 2023 | Sep 18, 2023 |
| 4 | Insider transaction | Aug 21, 2023 | Aug 17, 2023 |
| 4 | Insider transaction | Jul 24, 2023 | Jul 20, 2023 |
| 4 | Insider transaction | Jul 24, 2023 | Jul 20, 2023 |
| 4 | Insider transaction | Jul 24, 2023 | Jul 20, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 24, 2023 | — |
| 4 | Insider transaction | Jul 19, 2023 | Jul 17, 2023 |
| 3 | Initial insider ownership | Jul 19, 2023 | Jul 14, 2023 |
| 4 | Insider transaction | Jul 6, 2023 | Jul 1, 2023 |
| 3 | Initial insider ownership | Jul 6, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 1, 2023 |
| 4 | Insider transaction | Mar 27, 2023 | Mar 23, 2023 |
| 4 | Insider transaction | Mar 27, 2023 | Mar 23, 2023 |
| 4 | Insider transaction | Mar 27, 2023 | Mar 23, 2023 |
| SC 13D | Ownership over 5% (active) | Mar 20, 2023 | — |
| 4 | Insider transaction | Mar 13, 2023 | Mar 9, 2023 |
| 4 | Insider transaction | Mar 13, 2023 | Mar 9, 2023 |
| 4 | Insider transaction | Mar 13, 2023 | Mar 9, 2023 |
| SC 13D | Ownership over 5% (active) | Mar 13, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 13, 2023 | — |
| 3 | Initial insider ownership | Feb 14, 2023 | Feb 1, 2023 |
| SC 13D | Ownership over 5% (active) | Feb 14, 2023 | — |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 3 | Initial insider ownership | Feb 3, 2023 | Feb 1, 2023 |
| 3 | Initial insider ownership | Feb 3, 2023 | Feb 1, 2023 |
| 3 | Initial insider ownership | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Jul 6, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 6, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 6, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 6, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Mar 25, 2022 | Mar 23, 2022 |
| 4 | Insider transaction | Mar 25, 2022 | Mar 23, 2022 |
| 4 | Insider transaction | Mar 25, 2022 | Mar 23, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| 4 | Insider transaction | Nov 23, 2021 | Nov 19, 2021 |
| 4 | Insider transaction | Aug 19, 2021 | Aug 17, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 12, 2021 | — |
| 4 | Insider transaction | Jul 6, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 1, 2021 |
| 3 | Initial insider ownership | Apr 12, 2021 | Apr 1, 2021 |
| 4 | Insider transaction | Mar 25, 2021 | Mar 23, 2021 |
| 4 | Insider transaction | Mar 25, 2021 | Mar 23, 2021 |
| 4 | Insider transaction | Mar 25, 2021 | Mar 23, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Dec 28, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 9, 2020 | — |
| 4 | Insider transaction | Jul 6, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 6, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 6, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 6, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 6, 2020 | Jul 1, 2020 |
| 4 | Insider transaction | Jul 6, 2020 | Jul 1, 2020 |
| 3 | Initial insider ownership | May 18, 2020 | May 7, 2020 |
| 4 | Insider transaction | Mar 25, 2020 | Mar 23, 2020 |
| 4 | Insider transaction | Mar 25, 2020 | Mar 23, 2020 |
| 4 | Insider transaction | Mar 25, 2020 | Mar 23, 2020 |
| 4 | Insider transaction | Mar 25, 2020 | Mar 23, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 4, 2020 | — |
| 4 | Insider transaction | Jan 3, 2020 | Jan 1, 2020 |
| 4 | Insider transaction | Jan 3, 2020 | Jan 1, 2020 |
| 4 | Insider transaction | Jan 3, 2020 | Jan 1, 2020 |
| 4 | Insider transaction | Jan 3, 2020 | Jan 1, 2020 |
| 4 | Insider transaction | Jan 3, 2020 | Jan 1, 2020 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 30, 2019 |
| 4 | Insider transaction | Nov 22, 2019 | Nov 20, 2019 |
| 4 | Insider transaction | Oct 29, 2019 | Sep 6, 2019 |
| 4 | Insider transaction | Oct 18, 2019 | Oct 16, 2019 |
| 4 | Insider transaction | Sep 5, 2019 | Sep 3, 2019 |
| 4 | Insider transaction | Aug 29, 2019 | Aug 27, 2019 |
| 4 | Insider transaction | Aug 27, 2019 | Aug 23, 2019 |
| 4 | Insider transaction | Aug 23, 2019 | Aug 21, 2019 |
| 4 | Insider transaction | Aug 21, 2019 | Aug 19, 2019 |
| 4 | Insider transaction | Aug 20, 2019 | Aug 16, 2019 |
| 3 | Initial insider ownership | Aug 20, 2019 | Aug 12, 2019 |
| 4 | Insider transaction | Jul 3, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 3, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 3, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 3, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 3, 2019 | Jul 1, 2019 |
| 4 | Insider transaction | Jul 3, 2019 | Jul 1, 2019 |
| 3 | Initial insider ownership | May 9, 2019 | Apr 29, 2019 |
| 4 | Insider transaction | Mar 26, 2019 | Mar 23, 2019 |
| 4 | Insider transaction | Mar 26, 2019 | Mar 23, 2019 |
| 4 | Insider transaction | Mar 26, 2019 | Mar 23, 2019 |
| 3 | Initial insider ownership | Mar 11, 2019 | Feb 27, 2019 |
Showing 200 filings, the most recent 200. 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.