| Date | Event |
| 15-Dec-09 | Price hit new 52-week high ($26.80) |
| 14-Dec-09 | NORTHWESTERN CORP Files SEC form 8-K, Change in Directors or Principal Officers |
| 11-Dec-09 | Ex-Date for dividend payment of $0.335 |
| 10-Dec-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 8-Dec-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 4-Dec-09 | Price hit new 52-week high ($26.40) |
| 3-Dec-09 | Price hit new 52-week high ($26.29) |
| 19-Nov-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 3-Nov-09 | NORTHWESTERN CORP Files SEC form 8-K, Other Events |
| 2-Nov-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 29-Oct-09 | NORTHWESTERN CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibit |
| 29-Oct-09 | NORTHWESTERN CORP Files SEC form 10-Q, Quarterly Report |
| 21-Oct-09 | NORTHWESTERN CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Creation of a Direct Financial Obli |
| 6-Oct-09 | NORTHWESTERN CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Creation of a Direct Financial Obli |
| 29-Sep-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 16-Sep-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 11-Sep-09 | Ex-Date for dividend payment of $0.335 |
| 6-Aug-09 | NORTHWESTERN CORP Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 30-Jul-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 29-Jul-09 | NORTHWESTERN CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibit |
| 29-Jul-09 | NORTHWESTERN CORP Files SEC form 10-Q, Quarterly Report |
| 9-Jul-09 | NORTHWESTERN CORP Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 7-Jul-09 | NORTHWESTERN CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Creation of a Direct Financial Obli |
| 27-May-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 4-May-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 23-Apr-09 | NORTHWESTERN CORP Files SEC form 8-K, Results of Operations and Financial Condition, Change in Directors or Principal |
| 23-Apr-09 | NORTHWESTERN CORP Files SEC form 10-Q, Quarterly Report |
| 22-Apr-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 26-Mar-09 | NORTHWESTERN CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Creation of a Direct Financial Obli |
| 24-Mar-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 19-Mar-09 | NORTHWESTERN CORP Files SEC form 8-K, Other Events, Financial Statements and Exhibits |
| 11-Mar-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 23-Feb-09 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 20-Feb-09 | NORTHWESTERN CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhibits |
| 13-Feb-09 | NORTHWESTERN CORP Files SEC form 8-K, Results of Operations and Financial Condition, Financial Statements and Exhibit |
| 13-Feb-09 | NORTHWESTERN CORP Files SEC form 10-K, Annual Report |
| 6-Feb-09 | NORTHWESTERN CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhibits |
| 29-Jan-09 | NORTHWESTERN CORP Files SEC form 8-K, Change in Directors or Principal Officers, Financial Statements and Exhibits |
| 11-Dec-08 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |
| 2-Dec-08 | NORTHWESTERN CORP Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits |