| Date | Event |
| 18-Dec-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Regulation FD Disclosure, Fi |
| 4-Dec-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 10-Nov-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 9-Nov-09 | HELICOS BIOSCIENCES CORP Files SEC form 10-Q, Quarterly Report |
| 27-Oct-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 13-Oct-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Financial Statements and Exh |
| 28-Sep-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhi |
| 17-Sep-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Unregistered Sale of Equity |
| 11-Sep-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers |
| 4-Sep-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 31-Aug-09 | Price hit new 52-week high ($3.54) |
| 28-Aug-09 | Price hit new 52-week high ($1.76) |
| 14-Aug-09 | HELICOS BIOSCIENCES CORP Files SEC form 10-Q, Quarterly Report |
| 11-Aug-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhi |
| 5-Jun-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Other Events |
| 14-May-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and |
| 10-Apr-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers |
| 30-Mar-09 | HELICOS BIOSCIENCES CORP Files SEC form 10-K, Annual Report |
| 30-Jan-09 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers, Regulation FD Disclosure, Fin |
| 30-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 22-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Unregistered Sale of Equity |
| 19-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Regulation FD Disclosure |
| 17-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhi |
| 16-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Regulation FD Disclosure |
| 8-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers |
| 4-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Costs Associated with Exit or Disposal Activities, Regulation FD Disclos |
| 2-Dec-08 | HELICOS BIOSCIENCES CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhi |