| Date | Event |
| 6-Nov-09 | WESCO INTERNATIONAL INC Files SEC form 10-Q, Quarterly Report |
| 22-Oct-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Results of Operations and Financial Condition |
| 21-Oct-09 | Price hit new 52-week high ($30.49) |
| 1-Oct-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Amendments to Articles of Inc. or Bylaws; Change in Fiscal Year |
| 22-Sep-09 | Price hit new 52-week high ($29.94) |
| 21-Sep-09 | Price hit new 52-week high ($29.45) |
| 11-Sep-09 | Wesco upgraded by Barclays Capital |
| 28-Aug-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 27-Aug-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 24-Aug-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 21-Aug-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 20-Aug-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 3-Aug-09 | WESCO INTERNATIONAL INC Files SEC form 10-Q, Quarterly Report |
| 29-Jul-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 28-Jul-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 27-Jul-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Other Events |
| 23-Jul-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Results of Operations and Financial Condition |
| 27-May-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Change in Directors or Principal Officers |
| 6-May-09 | WESCO INTERNATIONAL INC Files SEC form 10-Q, Quarterly Report |
| 23-Apr-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Results of Operations and Financial Condition |
| 15-Apr-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Entry into a Material Definitive Agreement, Creation of a Direct Financia |
| 27-Feb-09 | WESCO INTERNATIONAL INC Files SEC form 10-K, Annual Report |
| 29-Jan-09 | WESCO INTERNATIONAL INC Files SEC form 8-K, Results of Operations and Financial Condition |
| 10-Nov-08 | WESCO INTERNATIONAL INC Files SEC form 10-Q, Quarterly Report |
| 27-Oct-08 | WESCO INTERNATIONAL INC Files SEC form 8-K, Change in Directors or Principal Officers |