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 |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 4, 2026 | Nov 4, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Aug 28, 2026 | Aug 24, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 23, 2026 | Jul 17, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 2, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 18, 2026 | Jun 14, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 11, 2026 | Jun 10, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
May 27, 2026 | May 20, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| 8-K |
Current report
Officer or director change
|
May 1, 2026 | Apr 29, 2026 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Apr 17, 2026 | Apr 15, 2026 |
| 8-K |
Current report
Material agreement
|
Apr 1, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2026 | Mar 9, 2026 |
| 8-K |
Current report
Material agreement
|
Mar 3, 2026 | Feb 27, 2026 |
| 8-K |
Current report
Material agreement
|
Jan 29, 2026 | Jan 28, 2026 |
| 8-K |
Current report
Material agreement
|
Dec 11, 2025 | Dec 9, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| 8-K/A |
Amended current report
Shareholder vote results
|
Aug 14, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2025 | Aug 11, 2025 |
| 8-K |
Current report
Other events
|
Aug 6, 2025 | Aug 6, 2025 |
| 8-K |
Current report
Auditor change
|
Jun 9, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Jun 6, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Results of operations
|
May 7, 2025 | May 7, 2025 |
| 8-K |
Current report
Other events
|
May 6, 2025 | May 6, 2025 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Apr 11, 2025 | Apr 8, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 2, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2025 | Mar 5, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 7, 2025 | Feb 7, 2025 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Regulation FD disclosure
|
Jan 2, 2025 | Dec 27, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 8-K |
Current report
Material agreement, Agreement ended, Other events
|
Sep 20, 2024 | Sep 17, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2024 | Aug 12, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 13, 2024 | Jun 10, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
May 16, 2024 | May 15, 2024 |
| 8-K |
Current report
Results of operations
|
May 8, 2024 | May 8, 2024 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Apr 16, 2024 | Apr 15, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2024 | Mar 12, 2024 |
| 8-K |
Current report
Material agreement
|
Feb 13, 2024 | Feb 8, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Jan 31, 2024 | Jan 31, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Jan 24, 2024 | Jan 19, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2023 | Nov 8, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 8, 2023 | Nov 6, 2023 |
| 8-K |
Current report
Officer or director change, Other events
|
Sep 18, 2023 | Sep 18, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2023 | Aug 9, 2023 |
| 8-K/A |
Amended current report
Officer or director change
|
Aug 3, 2023 | Jul 14, 2023 |
| 8-K |
Current report
Unregistered share sale, Officer or director change, Other events
|
Jul 17, 2023 | Jul 14, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2023 | Jun 13, 2023 |
| 8-K |
Current report
Material agreement
|
Jun 6, 2023 | Jun 2, 2023 |
| 8-K |
Current report
Results of operations
|
May 9, 2023 | May 9, 2023 |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Officer or director change
|
Apr 14, 2023 | Apr 11, 2023 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 29, 2023 | Mar 27, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 8, 2023 | Mar 8, 2023 |
| 8-K/A | Amended current report | Mar 2, 2023 | Feb 1, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, New debt, Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
|
Feb 1, 2023 | Feb 1, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2022 | Nov 8, 2022 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Sep 6, 2022 | Sep 2, 2022 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Aug 19, 2022 | Aug 19, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 15, 2022 | Aug 15, 2022 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 17, 2022 | May 16, 2022 |
| 8-K |
Current report
Results of operations
|
May 9, 2022 | May 9, 2022 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Mar 16, 2022 | Mar 15, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 8, 2022 | Mar 8, 2022 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 9, 2021 | Nov 9, 2021 |
| 8-K |
Current report
Officer or director change
|
Aug 18, 2021 | Aug 12, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2021 | Aug 9, 2021 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Jul 29, 2021 | Jul 27, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 17, 2021 | Jun 15, 2021 |
| 8-K |
Current report
Agreement ended, Other events
|
Jun 3, 2021 | Jun 1, 2021 |
| 8-K |
Current report
Results of operations
|
May 10, 2021 | May 10, 2021 |
| 8-K |
Current report
Other events
|
Apr 23, 2021 | Apr 22, 2021 |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Officer or director change
|
Apr 13, 2021 | Apr 8, 2021 |
| 8-K |
Current report
Material agreement
|
Mar 29, 2021 | Mar 23, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2021 | Mar 10, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 3, 2021 | Feb 25, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2020 | Nov 9, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 30, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Material agreement
|
Sep 29, 2020 | Sep 29, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2020 | Aug 10, 2020 |
| 8-K |
Current report
Material agreement
|
Jul 7, 2020 | Jul 1, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jun 18, 2020 | Jun 16, 2020 |
| 8-K |
Current report
Material agreement, Results of operations, Officer or director change, Other events
|
May 11, 2020 | May 6, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 22, 2020 | Apr 20, 2020 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Apr 9, 2020 | Apr 8, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 1, 2020 | Mar 27, 2020 |
| 8-K |
Current report
Results of operations
|
Mar 16, 2020 | Mar 16, 2020 |
| 8-K |
Current report
Other events
|
Dec 2, 2019 | Nov 25, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2019 | Nov 12, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2019 | Aug 5, 2019 |
| 8-K |
Current report
Shareholder vote results
|
Jun 20, 2019 | Jun 20, 2019 |
| 8-K |
Current report
Results of operations
|
May 6, 2019 | May 6, 2019 |
| 8-K |
Current report
Officer or director change
|
Apr 29, 2019 | Apr 29, 2019 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Apr 11, 2019 | Apr 5, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 18, 2019 | Mar 18, 2019 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2019 | Feb 27, 2019 |
| 8-K/A | Amended current report | Feb 20, 2019 | Dec 7, 2018 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt
|
Dec 13, 2018 | Dec 7, 2018 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 15, 2018 | Nov 15, 2018 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 6, 2018 | Nov 6, 2018 |
| 8-K |
Current report
Material agreement
|
Oct 2, 2018 | Sep 30, 2018 |
| 8-K | Current report | Aug 21, 2018 | Aug 16, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2018 | Aug 6, 2018 |
| 8-K |
Current report
Material agreement
|
Jul 17, 2018 | Jul 11, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 25, 2018 | Jun 22, 2018 |
| 8-K |
Current report
Shareholder vote results
|
Jun 21, 2018 | Jun 19, 2018 |
| 8-K |
Current report
Officer or director change
|
May 15, 2018 | May 9, 2018 |
| 8-K |
Current report
Results of operations
|
May 9, 2018 | May 9, 2018 |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change
|
May 3, 2018 | Apr 30, 2018 |
| 8-K |
Current report
Material agreement, Change to shareholder rights, Officer or director change
|
Apr 11, 2018 | Apr 6, 2018 |
| 8-K |
Current report
Other events
|
Mar 26, 2018 | Mar 22, 2018 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2018 | Mar 12, 2018 |
| 8-K |
Current report
Officer or director change
|
Mar 7, 2018 | Mar 1, 2018 |
| 8-K |
Current report
Material agreement
|
Jan 4, 2018 | Dec 29, 2017 |
| 8-K |
Current report
Other events
|
Dec 4, 2017 | Dec 4, 2017 |
| 8-K |
Current report
Other events
|
Dec 4, 2017 | Dec 4, 2017 |
| 8-K | Current report | Nov 28, 2017 | Nov 28, 2017 |
| 8-K |
Current report
Auditor change
|
Nov 20, 2017 | Nov 16, 2017 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2017 | Nov 6, 2017 |
| 8-K |
Current report
Material agreement
|
Oct 2, 2017 | Sep 30, 2017 |
| 8-K | Current report | Aug 17, 2017 | Aug 15, 2017 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2017 | Aug 7, 2017 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Jun 22, 2017 | Jun 20, 2017 |
| 8-K |
Current report
Other events
|
Jun 14, 2017 | Jun 14, 2017 |
| 8-K |
Current report
Material agreement, Results of operations, Change to shareholder rights, Bylaw or fiscal year change
|
May 8, 2017 | May 5, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 13, 2017 | Mar 13, 2017 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 6, 2017 | Feb 28, 2017 |
| 8-K |
Current report
Other events
|
Feb 16, 2017 | Feb 10, 2017 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jan 10, 2017 | Jan 4, 2017 |
| 8-K |
Current report
Material agreement
|
Dec 1, 2016 | Nov 25, 2016 |
| 8-K |
Current report
Other events
|
Nov 16, 2016 | Nov 2, 2016 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2016 | Nov 8, 2016 |
| 8-K |
Current report
Material agreement
|
Oct 6, 2016 | Sep 30, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 13, 2016 | Sep 13, 2016 |
| 8-K |
Current report
Material agreement
|
Sep 1, 2016 | Aug 29, 2016 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2016 | Aug 9, 2016 |
| 8-K |
Current report
Exit or restructuring costs
|
Aug 1, 2016 | Jul 27, 2016 |
| 8-K |
Current report
Material agreement, Agreement ended, Regulation FD disclosure
|
Jul 6, 2016 | Jun 30, 2016 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Jun 27, 2016 | Jun 22, 2016 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 1, 2016 | May 27, 2016 |
| 8-K |
Current report
Results of operations
|
May 11, 2016 | May 10, 2016 |
| 8-K |
Current report
Results of operations
|
Apr 20, 2016 | Apr 19, 2016 |
| 8-K |
Current report
Exit or restructuring costs
|
Apr 18, 2016 | Apr 12, 2016 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 14, 2016 | Apr 13, 2016 |
| 8-K |
Current report
Material agreement
|
Mar 31, 2016 | Mar 30, 2016 |
| 8-K |
Current report
Agreement ended, Acquisition or sale of assets, Regulation FD disclosure
|
Mar 9, 2016 | Mar 3, 2016 |
| 8-K |
Current report
Material agreement
|
Mar 3, 2016 | Feb 26, 2016 |
| 8-K |
Current report
Results of operations
|
Feb 29, 2016 | Feb 29, 2016 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Feb 10, 2016 | Feb 8, 2016 |
| 8-K |
Current report
Material agreement, Change to shareholder rights
|
Dec 17, 2015 | Dec 16, 2015 |
| 8-K |
Current report
Officer or director change
|
Nov 23, 2015 | Nov 17, 2015 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 26, 2015 | Oct 22, 2015 |
| 8-K |
Current report
Exit or restructuring costs, Regulation FD disclosure
|
Sep 1, 2015 | Sep 1, 2015 |
| 8-K |
Current report
Exit or restructuring costs, Impairment
|
Aug 19, 2015 | Aug 14, 2015 |
| 8-K |
Current report
Officer or director change
|
Jul 9, 2015 | Jul 3, 2015 |
| 8-K/A | Amended current report | Jun 25, 2015 | Jun 23, 2015 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 23, 2015 | Jun 23, 2015 |
| 8-K |
Current report
Auditor change, Officer or director change, Regulation FD disclosure
|
Jun 16, 2015 | Jun 12, 2015 |
| 8-K |
Current report
Officer or director change
|
Jun 11, 2015 | Jun 5, 2015 |
| 8-K |
Current report
Officer or director change
|
May 27, 2015 | May 20, 2015 |
| 8-K |
Current report
Exit or restructuring costs, Regulation FD disclosure
|
May 18, 2015 | May 14, 2015 |
| 8-K |
Current report
Officer or director change
|
May 6, 2015 | Apr 30, 2015 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Apr 7, 2015 | Apr 1, 2015 |
| 8-K |
Current report
Listing notice
|
Mar 23, 2015 | Mar 17, 2015 |
| 8-K |
Current report
Material agreement
|
Mar 17, 2015 | Mar 16, 2015 |
| 8-K |
Current report
Officer or director change
|
Mar 9, 2015 | Mar 3, 2015 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 2, 2015 | Feb 24, 2015 |
| 8-K |
Current report
Unregistered share sale
|
Feb 17, 2015 | Aug 22, 2014 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 12, 2015 | Feb 12, 2015 |
| 8-K/A |
Amended current report
Auditor change
|
Feb 9, 2015 | Feb 6, 2015 |
| 8-K |
Current report
Material agreement, Listing notice, Change to shareholder rights, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Feb 2, 2015 | Jan 30, 2015 |
| 8-K |
Current report
Auditor change, Regulation FD disclosure
|
Jan 29, 2015 | Jan 23, 2015 |
| 8-K |
Current report
Listing notice, Other events
|
Jan 12, 2015 | Jan 6, 2015 |
| 8-K/A |
Amended current report
Regulation FD disclosure
|
Nov 20, 2014 | Nov 20, 2014 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 20, 2014 | Nov 20, 2014 |
| 8-K |
Current report
Listing notice, Regulation FD disclosure
|
Oct 3, 2014 | Sep 29, 2014 |
| 8-K |
Current report
Officer or director change, Other events
|
Sep 22, 2014 | Sep 19, 2014 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 2, 2014 | Aug 26, 2014 |
| 8-K |
Current report
Restatement, Regulation FD disclosure
|
Aug 21, 2014 | Aug 20, 2014 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 11, 2014 | Aug 11, 2014 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change
|
Jul 29, 2014 | Jul 23, 2014 |
| 8-K |
Current report
Restatement
|
Jun 12, 2014 | Jun 6, 2014 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 3, 2014 | Jun 3, 2014 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 28, 2014 | May 21, 2014 |
| 8-K |
Current report
Regulation FD disclosure
|
May 12, 2014 | May 12, 2014 |
| 8-K |
Current report
Restatement, Officer or director change, Other events
|
Apr 24, 2014 | Apr 18, 2014 |
| 8-K |
Current report
Listing notice
|
Apr 9, 2014 | Apr 3, 2014 |
| 8-K |
Current report
Other events
|
Feb 14, 2014 | Feb 14, 2014 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 15, 2014 | Jan 15, 2014 |
| 8-K |
Current report
Other events
|
Nov 20, 2013 | Nov 18, 2013 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure, Other events
|
Nov 15, 2013 | Nov 14, 2013 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2013 | Nov 7, 2013 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 4, 2013 | Oct 22, 2013 |
| 8-K |
Current report
Other events
|
Oct 3, 2013 | Sep 19, 2013 |
| 8-K |
Current report
Other events
|
Sep 12, 2013 | Sep 11, 2013 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 11, 2013 | Sep 10, 2013 |
| 8-K |
Current report
Officer or director change
|
Aug 27, 2013 | Aug 21, 2013 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 12, 2013 | Aug 12, 2013 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2013 | Aug 7, 2013 |
| 8-K |
Current report
Material agreement
|
Mar 25, 2013 | Mar 25, 2013 |
| 8-K |
Current report
Agreement ended, Other events
|
May 22, 2012 | May 17, 2012 |
| 8-K |
Current report
Material agreement
|
Mar 19, 2012 | Mar 15, 2012 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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)
Other Miscellaneous Chemical Products companies
- Element Solutions Inc ESI
- Cabot Corp CBT
- WD 40 Co WDFC
- Flotek Industries INC/CN/ FTK
- Orion S.A. OEC
- ASP Isotopes Inc. ASPI
- Flexible Solutions International Inc FSI
- Zentek Ltd. ZTEKF
Source: SEC EDGAR filings. This is company-reported data, not investment advice.