| Event Type | Name | Date | Description |
| Forming | Initial Formation |
1975
| Formed in Londonderry, N. Ireland by Feargal Sharkey and John O'Neill |
| Other | Launched Ardeck Label |
1981
| Launched Ardeck Record Label |
| Disbanding | Disbanded |
1983
| Group disbanded. Feargal went solo. |
| Re-forming | Re-formed |
1999
| Band reformed without Feargal |