| Date | Event |
| 17-Nov-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 16-Nov-09 | ADA-ES INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibits |
| 16-Nov-09 | Earnings announcement |
| 3-Nov-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 30-Oct-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 28-Oct-09 | Price hit new 52-week low ($2.05) |
| 13-Oct-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 9-Sep-09 | ADA-ES INC Files SEC form 8-K/A, Regulation FD Disclosure |
| 9-Sep-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 13-Aug-09 | ADA-ES INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibits |
| 2-Jul-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 8-Jun-09 | ADA-ES INC Files SEC form 8-K, Other Events |
| 19-May-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 14-May-09 | ADA-ES INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibits |
| 6-Apr-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 1-Apr-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 27-Mar-09 | ADA-ES INC Files SEC form 10-K, Annual Report |
| 25-Mar-09 | ADA-ES INC Files SEC form 8-K/A, Results of Operations and Financial Condition, Financial Statements and Exhibits |
| 25-Mar-09 | ADA-ES INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibits |
| 9-Mar-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement, Material Impairments |
| 4-Mar-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 19-Feb-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 2-Feb-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 13-Jan-09 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 12-Jan-09 | ADA-ES INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 9-Dec-08 | ADA-ES INC Files SEC form 8-K, Other Events, Financial Statements and Exhibits |
| 2-Dec-08 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 10-Nov-08 | ADA-ES INC Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 7-Nov-08 | ADA-ES INC Files SEC form 10-Q, Quarterly Report |
| 6-Nov-08 | ADA-ES INC Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibits |