| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13G | Report | May 30, 2024 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 14, 2022 | |
| SC 13G/A | Report | ADVANCED EMISSIONS SOLUTIONS, INC. | Feb 10, 2022 | |
| SC 13G/A | Report | Jul 12, 2021 | ||
| SC 13G | Report | SC 13G | Feb 12, 2021 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2021 | |
| SC 13G/A | Report | Jan 29, 2021 | ||
| SC 13G | Report | ADVANCED EMISSIONS SOLUTIONS, INC. | Dec 28, 2020 | |
| SC 13G/A | Report | Oct 9, 2020 | ||
| SC 13G/A | Report | SC 13G/A | Feb 13, 2020 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 12, 2020 | |
| SC 13G/A | Report | Feb 4, 2020 | ||
| SC 13G/A | Report | Feb 14, 2019 | ||
| SC 13G/A | Report | SC 13G/A | Feb 13, 2019 | |
| SC 13G | Report | Feb 11, 2019 | ||
| SC 13G | Report | Feb 11, 2019 | ||
| SC 13G/A | Report | Jan 24, 2019 | ||
| SC 13G/A | Report | SC 13G/A | Feb 14, 2018 | |
| SC 13G/A | Report | 13G/A | Feb 14, 2018 | |
| SC 13G | Report | SC 13G | Feb 12, 2018 | |
| SC 13G/A | Report | Jan 19, 2018 | ||
| SC 13G | Report | SC 13G | May 12, 2017 | |
| SC 13G/A | Report | 13G/A | Feb 14, 2017 | |
| SC 13G | Report | Feb 7, 2017 | ||
| SC 13G/A | Report | Jan 12, 2017 | ||
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 11, 2016 | |
| SC 13G/A | Report | Jan 8, 2016 | ||
| SC 13G/A | Report | AMENDMENT NO. 1 | Aug 27, 2015 | |
| SC 13G | Report | SCHEDULE 13G HOLDINGS REPORT | Apr 27, 2015 | |
| SC 13G | Report | Feb 13, 2015 | ||
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 12, 2015 | |
| SC 13G | Report | Feb 4, 2015 | ||
| SC 13G/A | Report | Jan 9, 2015 | ||
| SC 13G | Report | SC 13G | May 13, 2014 | |
| SC 13G | Report | DISCLOSURE DOCUMENT | Feb 14, 2014 | |
| SC 13G/A | Report | Jan 10, 2014 | ||
| SC 13G | Report | Aug 9, 2013 |