Northwestern Corp reports

Location
3010 W 69 Th Street, Sioux Falls, SD
State of incorporation
DE
Fiscal year end
December 31
Data updated at
7/19/2024, 08:55 AM
Form type Sec Links Description Filing date Reporting date
SC 13G/A Report SCHEDULE 13G/A Feb 13, 2024
SC 13G/A Report Jan 22, 2024
8-K Report | Data 8-K Dec 6, 2023 Dec 6, 2023
8-K Report | Data 8-K Dec 5, 2023 Nov 29, 2023
8-K Report | Data 8-K Nov 13, 2023 Nov 12, 2023
8-K Report | Data 8-K Oct 27, 2023 Oct 26, 2023
10-Q Report | Data 10-Q Oct 27, 2023 Sep 30, 2023
8-K Report | Data 8-K Oct 2, 2023 Oct 2, 2023
8-K Report | Data 8-K Sep 13, 2023 Sep 13, 2023
8-K Report | Data 8-K Jul 25, 2023 Jul 24, 2023
10-Q Report | Data 10-Q Jul 25, 2023 Jun 30, 2023
8-K Report | Data 8-K Jul 6, 2023 Jun 29, 2023
8-K Report | Data 8-K Jun 15, 2023 Jun 15, 2023
8-K Report | Data 8-K Jun 9, 2023 Jun 5, 2023
8-K Report | Data 8-K Jun 8, 2023 Jun 8, 2023
8-K Report | Data 8-K Jun 7, 2023 Jun 1, 2023
8-K Report | Data 8-K May 19, 2023 May 19, 2023
8-K Report | Data 8-K May 5, 2023 May 1, 2023
8-K Report | Data 8-K May 3, 2023 Apr 28, 2023
8-K Report | Data 8-K Apr 28, 2023 Apr 27, 2023
10-Q Report | Data 10-Q Apr 28, 2023 Mar 31, 2023
8-K Report | Data 8-K Apr 5, 2023 Apr 3, 2023
8-K Report | Data 8-K Apr 5, 2023 Mar 30, 2023
8-K Report | Data 8-K Mar 15, 2023 Mar 15, 2023
SC 13G/A Report Mar 8, 2023
8-K Report | Data 8-K Feb 27, 2023 Feb 27, 2023
8-K Report | Data 8-K Feb 23, 2023 Feb 17, 2023
8-K Report | Data 8-K Feb 17, 2023 Feb 16, 2023
10-K Report | Data 10-K Feb 17, 2023 Dec 31, 2022
SC 13G/A Report Feb 14, 2023
SC 13G/A Report SCHEDULE 13G/A Feb 9, 2023
SC 13G/A Report SC 13G/A Feb 8, 2023
SC 13G/A Report Jan 23, 2023
8-K Report | Data 8-K Jan 17, 2023 Jan 16, 2023
8-K Report | Data 8-K Jan 5, 2023 Dec 21, 2022
8-K Report | Data 8-K Dec 19, 2022 Dec 13, 2022
8-K Report | Data 8-K Dec 7, 2022 Dec 7, 2022
8-K Report | Data 8-K Dec 1, 2022 Nov 28, 2022
8-K Report | Data 8-K Nov 14, 2022 Nov 14, 2022
8-K Report | Data 8-K Nov 3, 2022 Oct 28, 2022
8-K Report | Data 8-K Oct 25, 2022 Oct 24, 2022
10-Q Report | Data 10-Q Oct 25, 2022 Sep 30, 2022
8-K Report | Data 8-K Sep 22, 2022 Sep 21, 2022
8-K Report | Data 8-K Sep 22, 2022 Sep 22, 2022
8-K Report | Data 8-K Aug 31, 2022 Aug 31, 2022
8-K Report | Data 8-K Aug 9, 2022 Aug 8, 2022
8-K Report | Data 8-K Aug 1, 2022 Jul 28, 2022
8-K Report | Data 8-K Jul 28, 2022 Jul 27, 2022
8-K Report | Data 8-K Jul 28, 2022 Jul 27, 2022
10-Q Report | Data 10-Q Jul 28, 2022 Jun 30, 2022
8-K Report | Data 8-K PARTIAL FORWARD SETTLEMENT JUNE 2022 Jun 28, 2022 Jun 24, 2022
8-K Report | Data 8-K May 23, 2022 May 18, 2022
8-K Report | Data 8-K May 17, 2022 May 17, 2022
8-K Report | Data 8-K May 5, 2022 Apr 29, 2022
8-K Report | Data 8-K Apr 29, 2022 Apr 28, 2022
10-Q Report | Data 10-Q Apr 29, 2022 Mar 31, 2022
8-K Report | Data 8-K Mar 17, 2022 Mar 17, 2022
8-K Report | Data 8-K Mar 3, 2022 Mar 3, 2022
8-K Report | Data 8-K Mar 2, 2022 Mar 2, 2022
8-K Report | Data 8-K Feb 16, 2022 Feb 10, 2022
SC 13G Report Feb 14, 2022
8-K Report | Data 8-K Feb 14, 2022 Feb 10, 2022
SC 13G Report Feb 10, 2022
10-K Report | Data 10-K Feb 11, 2022 Dec 31, 2021
SC 13G/A Report SCHEDULE 13G/A Feb 9, 2022
SC 13G/A Report SC 13G/A Feb 4, 2022
SC 13G/A Report Jan 27, 2022
SC 13G Report Jan 25, 2022
8-K Report | Data 8-K Dec 20, 2021 Dec 14, 2021
8-K Report | Data 8-K Dec 8, 2021 Dec 8, 2021
SC 13G/A Report FILING NORTHWESTERN CORP Dec 7, 2021
8-K Report | Data 8-K Nov 19, 2021 Nov 15, 2021
8-K Report | Data 8-K Nov 8, 2021 Nov 8, 2021
8-K Report | Data 8-K Oct 25, 2021 Oct 24, 2021
10-Q Report | Data 10-Q Oct 25, 2021 Sep 30, 2021
8-K Report | Data 8-K Sep 22, 2021 Sep 22, 2021
8-K Report | Data 8-K Sep 9, 2021 Sep 9, 2021
8-K Report | Data 8-K Jul 28, 2021 Jul 27, 2021
10-Q Report | Data 10-Q Jul 28, 2021 Jun 30, 2021
8-K Report | Data 8-K Jun 16, 2021 Jun 16, 2021
8-K Report | Data 8-K May 13, 2021 May 13, 2021
8-K Report | Data 8-K Apr 28, 2021 Apr 28, 2021
8-K Report | Data 8-K ANNUAL MEETING VOTING RESULTS 2021 Apr 27, 2021 Apr 22, 2021
8-K Report | Data FORM 8-K Apr 23, 2021 Apr 23, 2021
8-K Report | Data 8-K Apr 22, 2021 Apr 21, 2021
10-Q Report | Data 10-Q Apr 22, 2021 Mar 31, 2021
8-K Report | Data 8-K Apr 1, 2021 Mar 26, 2021
8-K Report | Data 8-K Mar 15, 2021 Mar 15, 2021
8-K Report | Data 8-K Mar 1, 2021 Mar 1, 2021
8-K Report | Data 8-K Feb 17, 2021 Feb 11, 2021
8-K Report | Data 8-K Feb 12, 2021 Feb 11, 2021
10-K Report | Data 10-K Feb 12, 2021 Dec 31, 2020
SC 13G Report SC 13G Feb 11, 2021
SC 13G/A Report SCHEDULE 13G/A Feb 10, 2021
SC 13G/A Report SCHEDULE 13G/A Feb 10, 2021
8-K Report | Data 8-K Feb 10, 2021 Feb 5, 2021
SC 13G/A Report Jan 26, 2021
SC 13G Report FILING NORTHWESTERN CORP Jan 15, 2021
8-K Report | Data 8-K Dec 30, 2020 Dec 22, 2020
8-K Report | Data 8-K Dec 7, 2020 Dec 7, 2020
8-K Report | Data 8-K Dec 1, 2020 Dec 1, 2020
8-K Report | Data 8-K Nov 9, 2020 Nov 9, 2020
8-K Report | Data 8-K COLSTRIP TERMINATION Oct 30, 2020 Oct 29, 2020
8-K Report | Data 8-K Oct 27, 2020 Oct 27, 2020
8-K Report | Data 8-K EARNINGS RELEASE Q3 2020 Oct 22, 2020 Oct 21, 2020
10-Q Report | Data 10-Q Oct 22, 2020 Sep 30, 2020
8-K Report | Data 8-K Sep 24, 2020 Sep 24, 2020
8-K Report | Data 8-K Sep 18, 2020 Sep 18, 2020
8-K Report | Data 8-K Sep 10, 2020 Sep 10, 2020
8-K Report | Data 8-K Sep 4, 2020 Sep 2, 2020
8-K Report | Data 8-K Aug 12, 2020 Aug 12, 2020
8-K Report | Data 8-K Jul 29, 2020 Jul 28, 2020
10-Q Report | Data 10-Q Jul 29, 2020 Jun 30, 2020
8-K Report | Data 8-K Jun 16, 2020 Jun 16, 2020
8-K Report | Data 8-K May 20, 2020 May 15, 2020
8-K Report | Data 8-K May 14, 2020 May 14, 2020
8-K Report | Data 8-K Apr 29, 2020 Apr 23, 2020
8-K Report | Data 8-K Apr 23, 2020 Apr 22, 2020
10-Q Report | Data 10-Q Apr 23, 2020 Mar 31, 2020
8-K Report | Data 8-K Apr 7, 2020 Apr 6, 2020
8-K Report | Data 8-K Mar 3, 2020 Mar 3, 2020
8-K Report | Data 8-K Feb 13, 2020 Feb 13, 2020
10-K Report | Data 10-K Feb 13, 2020 Dec 31, 2019
SC 13G/A Report SCHEDULE 13G/A Feb 12, 2020
SC 13G/A Report SC 13G/A Feb 11, 2020
SC 13G/A Report Feb 4, 2020
8-K Report | Data 8-K Dec 23, 2019 Dec 23, 2019
8-K Report | Data 8-K Dec 13, 2019 Dec 13, 2019
8-K Report | Data 8-K Dec 10, 2019 Dec 10, 2019
8-K Report | Data 8-K Nov 8, 2019 Nov 8, 2019
8-K Report | Data 8-K Nov 1, 2019 Nov 1, 2019
8-K Report | Data 8-K Oct 30, 2019 Oct 30, 2019
10-Q Report | Data 10-Q Oct 30, 2019 Sep 30, 2019
8-K Report | Data 8-K Oct 2, 2019 Oct 2, 2019
8-K Report | Data 8-K Sep 20, 2019 Sep 20, 2019
8-K Report | Data 8-K Sep 4, 2019 Sep 4, 2019
8-K Report | Data 8-K Jul 24, 2019 Jul 24, 2019
10-Q Report | Data 10-Q Jul 24, 2019 Jun 30, 2019
8-K Report 8-K MT FIRST MORTGAGE BONDS 2019 Jul 2, 2019 Jun 26, 2019
8-K Report 8-K 2019 AGA FINANCIAL FORUM May 21, 2019 May 21, 2019
8-K Report 8-K 2019 ANNUAL MEETING VOTING RESULTS Apr 30, 2019 Apr 24, 2019
8-K Report 8-K Apr 24, 2019 Apr 23, 2019
10-Q Report | Data 10-Q Apr 24, 2019 Mar 31, 2019
8-K Report 8-K WEST COAST UTILITIES 2019 Mar 20, 2019 Mar 20, 2019
8-K Report 8-K NEW YORK BOSTON PRESENTATION Mar 5, 2019 Mar 5, 2019
8-K Report 8-K 2019 LTIP AWARDS Feb 15, 2019 Feb 11, 2019
8-K Report 8-K Feb 12, 2019 Feb 11, 2019
10-K Report | Data FORM 10-K 2018 Feb 12, 2019 Dec 31, 2018
SC 13G/A Report Feb 11, 2019
SC 13G Report SC 13G Feb 11, 2019
SC 13G/A Report Jan 31, 2019
SC 13G/A Report NONE Jan 7, 2019
8-K Report 8-K 2019 ANNUAL INCENTIVE AND 2018 ERRP GRANTS Dec 19, 2018 Dec 13, 2018
8-K Report 8-K 2018 WELLS FARGO Dec 4, 2018 Dec 4, 2018
SC 13G/A Report Nov 13, 2018
8-K Report 8-K Nov 9, 2018 Nov 9, 2018
8-K Report 8-K Oct 24, 2018 Oct 24, 2018
10-Q Report | Data FORM 10-Q SEPTEMBER 30, 2018 Oct 24, 2018 Sep 30, 2018
8-K Report 8-K BAML TX POWER CONFERENCE Sep 27, 2018 Sep 27, 2018
8-K Report 8-K FALL INVESTOR MEETINGS 2018 Sep 12, 2018 Sep 12, 2018
8-K Report 8-K BARCLAYS POWER CONF 2018 Sep 4, 2018 Sep 4, 2018
8-K Report 8-K OHIO PRESENTATION 2018 Jul 23, 2018 Jul 23, 2018
8-K Report 8-K EARNINGS RELEASE Q2 2018 Jul 20, 2018 Jul 19, 2018
10-Q Report | Data FORM 10-Q 6.30.18 Jul 20, 2018 Jun 30, 2018
8-K Report 8-K 2018 AGA FINANCIAL CONFERENCE May 18, 2018 May 18, 2018
8-K Report 8-K ANNUAL MEETING VOTING RESULTS Apr 30, 2018 Apr 25, 2018
8-K Report 8-K EARNINGS RELEASE Q1 2018 Apr 25, 2018 Apr 24, 2018
10-Q Report | Data FORM 10-Q 3.31.18 Apr 25, 2018 Mar 31, 2018
8-K Report 8-K WEST COAST UTILITIES 2018 Mar 21, 2018 Mar 21, 2018
8-K Report 8-K 2018 LTIP AWARDS Feb 16, 2018 Feb 12, 2018
8-K Report 8-K Feb 15, 2018 Feb 15, 2018
8-K Report 8-K DRAPER RESIGNATION Feb 15, 2018 Feb 12, 2018
8-K Report 8-K Q4 2017 EARNINGS Feb 13, 2018 Feb 12, 2018
10-K Report | Data FORM 10-K 2017 Feb 13, 2018 Dec 31, 2017
SC 13G/A Report Feb 9, 2018
SC 13G/A Report Jan 19, 2018
SC 13G Report NONE Jan 10, 2018
8-K Report 8-K 2017 DEC NY PRESENTATION Dec 4, 2017 Dec 4, 2017
8-K Report 8-K MONTANA FMB NOV 2017 Nov 8, 2017 Nov 6, 2017
8-K Report 8-K 2017 EEI FINANCIAL Nov 3, 2017 Nov 3, 2017
8-K Report 8-K EARNINGS RELEASE Q3 2017 Nov 2, 2017 Nov 2, 2017
10-Q Report | Data FORM 10-Q SEPTEMBER 30, 2017 Nov 2, 2017 Sep 30, 2017
8-K Report 8-K Sep 6, 2017 Sep 6, 2017
8-K Report | Data 8-K 2017 Q2 EARNINGS Jul 26, 2017 Jul 25, 2017
10-Q Report | Data FORM 10-Q JUNE 30, 2017 Jul 26, 2017 Jun 30, 2017
8-K Report 8-K 2017 MIDWEST AND AGA FINANCIAL FORUM May 17, 2017 May 17, 2017
8-K Report 8-K 2017 ANNUAL MEETING VOTING RESULTS May 2, 2017 Apr 27, 2017
8-K Report 8-K Q1 2017 EARNINGS Apr 27, 2017 Apr 27, 2017
10-Q Report | Data FORM 10-Q MARCH 31, 2017 Apr 27, 2017 Mar 31, 2017
8-K Report 8-K WEST COAST UTILITIES 2017 Mar 22, 2017 Mar 22, 2017
SC 13G/A Report Mar 2, 2017
8-K Report 8-K 2017 UBS UTILITIES Feb 28, 2017 Feb 28, 2017
8-K Report 8-K BRADLEY RESIGNATION Feb 27, 2017 Feb 22, 2017
8-K Report 8-K 2017 LTIP AWARDS Feb 23, 2017 Feb 16, 2017
8-K Report 8-K Q4 2016 EARNINGS Feb 17, 2017 Feb 16, 2017
10-K Report | Data FORM 10-K 12.31.16 Feb 17, 2017 Dec 31, 2016
SC 13G/A Report Feb 13, 2017
SC 13G/A Report Feb 10, 2017
SC 13G/A Report Jan 17, 2017
8-K Report 8-K THIRD AMENDED CREDIT AGREEMENT Dec 16, 2016 Dec 12, 2016
8-K Report 8-K 2016 ERRP AND 2017 ANNUAL INCENTIVE PLAN Dec 13, 2016 Dec 7, 2016
8-K Report 8-K 2016 12 12 EAST COAST INVESTOR MEETINGS Dec 12, 2016 Dec 12, 2016
8-K Report 8-K TONY CLARK DIRECTOR Dec 8, 2016 Dec 6, 2016
8-K Report 8-K 2016 EEI FINANCIAL CONFERENCE Nov 4, 2016 Nov 4, 2016
8-K Report 8-K KEY EMPLOYEE SEVERANCE PLAN 2016 Oct 25, 2016 Oct 19, 2016
8-K Report 8-K 2016 WEST COAST PRESENTATION Oct 24, 2016 Oct 24, 2016
8-K Report 8-K Q3 2016 EARNINGS Oct 20, 2016 Oct 20, 2016
10-Q Report | Data FORM 10-Q SEPTEMBER 30, 2016 Oct 20, 2016 Sep 30, 2016
8-K Report 8-K 2016 09 30 SD FMB Oct 7, 2016 Sep 30, 2016
8-K Report 8-K 2016 09 08 NY INVESTORS Sep 8, 2016 Sep 8, 2016
8-K Report 8-K 2016 POLLUTION CONTROL BONDS Aug 16, 2016 Aug 11, 2016
8-K Report 8-K 2016 Q2 EARNINGS RELEASE Jul 22, 2016 Jul 22, 2016
10-Q Report | Data FORM 10-Q JUNE 30, 2016 Jul 22, 2016 Jun 30, 2016
8-K Report 8-K SD FMB Jun 22, 2016 Jun 15, 2016
8-K Report 8-K 2016 AMENDMENT OF ARTICLES AND BYLAWS May 18, 2016 May 12, 2016
8-K Report | Data 8-K 2016 AGA FINANCIAL FORUM May 13, 2016 May 13, 2016
8-K Report | Data 8-K SD INVEST SOC PRESENTATION Apr 28, 2016 Apr 28, 2016
8-K Report 8-K 2016 ANNUAL MEETING RESULTS Apr 26, 2016 Apr 20, 2016
8-K Report | Data 8-K 2016 04 25 NY AND MIDW MTGS Apr 25, 2016 Apr 25, 2016
8-K Report | Data 8-K EARNINGS RELEASE Q1 2016 Apr 20, 2016 Apr 20, 2016
10-Q Report | Data FORM 10-Q 3.31.16 Apr 20, 2016 Mar 31, 2016
8-K Report | Data 8-K 2016 WILLIAMS WEST COAST UTILITY Mar 16, 2016 Mar 16, 2016
8-K Report 8-K 2016 UBS UTILITIES CONFERENCE Mar 1, 2016 Mar 1, 2016
8-K Report 8-K 2016 ANNUAL AND LONG-TERM INCENTIVE Feb 16, 2016 Feb 10, 2016
SC 13G/A Report Feb 16, 2016
8-K Report 8-K 2015 FINANCIAL RESULTS Feb 11, 2016 Feb 11, 2016
SC 13G/A Report Feb 11, 2016
10-K Report | Data 10-K Feb 11, 2016 Dec 31, 2015
SC 13G/A Report NWE AS OF 12/31/2015 Feb 9, 2016
8-K Report 8-K Jan 29, 2016 Jan 29, 2016
8-K Report 8-K PEOPLES RETIREMENT Jan 20, 2016 Jan 14, 2016
SC 13G/A Report Jan 8, 2016
8-K Report 8-K 50TH EEI FINANCIAL CONFERENCE PRESENTATION Nov 9, 2015 Nov 9, 2015
8-K Report 8-K LAIL APPOINTMENT Oct 22, 2015 Oct 21, 2015
8-K Report 8-K 2015 3RD Q FINANCIAL RESULTS Oct 22, 2015 Oct 21, 2015
10-Q Report | Data FORM 10-Q SEPTEMBER 30, 2015 Oct 22, 2015 Sep 30, 2015
8-K Report 8-K KLIEWER DEPARTURE Oct 16, 2015 Oct 13, 2015
8-K Report 8-K SD FMBS AND UA Oct 5, 2015 Sep 29, 2015
8-K Report 8-K SD RATE CASE AND BEETHOVEN Sep 25, 2015 Sep 25, 2015
8-K Report 8-K 2015 NORTHEAST PRESENTATION Sep 15, 2015 Sep 15, 2015
8-K Report 8-K LRAM INFORMATION Sep 11, 2015 Sep 8, 2015
8-K Report 8-K 2015 UBS TORONTO PRESENTATION Jul 28, 2015 Jul 28, 2015
8-K Report 8-K BEETHOVEN ACQUISITION Jul 23, 2015 Jul 22, 2015
8-K Report 8-K 2015 2ND Q FINANCIAL RESULTS Jul 23, 2015 Jul 23, 2015
10-Q Report | Data FORM 10-Q JUNE 30, 2015 Jul 23, 2015 Jun 30, 2015
SC 13G/A Report Jul 10, 2015
8-K Report 8-K MT FIRST MORTGAGE BONDS 2015 Jun 29, 2015 Jun 23, 2015
8-K Report 8-K 2015 AGA FINANCIAL FORUM May 18, 2015 May 18, 2015
8-K Report 8-K 2015 ANNUAL MEETING VOTING RESULTS Apr 29, 2015 Apr 23, 2015
8-K Report 8-K NY PRESENTATION 04 2015 Apr 27, 2015 Apr 27, 2015
8-K Report 8-K Q1 2015 EARNINGS Apr 23, 2015 Apr 23, 2015
10-Q Report | Data FORM 10-Q 3.31.15 Apr 23, 2015 Mar 31, 2015
8-K Report 8-K Mar 17, 2015 Mar 17, 2015
8-K Report 8-K 2015 LTIP GRANTS Feb 18, 2015 Feb 11, 2015
SC 13G/A Report NORTHWESTERN AMENDEMENT Feb 17, 2015
8-K Report 8-K Q4 2014 EARNINGS Feb 12, 2015 Feb 12, 2015
10-K Report | Data 10-K NORTHWESTERN CORPORATION Feb 12, 2015 Dec 31, 2014
SC 13G/A Report NWE AS OF 12/31/2014 Feb 11, 2015
SC 13G/A Report Feb 10, 2015
SC 13G/A Report Jan 15, 2015
8-K Report 8-K Dec 24, 2014 Dec 19, 2014
8-K Report 8-K Dec 22, 2014 Dec 16, 2014
SC 13G/A Report Dec 10, 2014
SC 13G Report NORTHWESTERN INITIAL Dec 9, 2014
8-K Report 8-K Dec 9, 2014 Dec 9, 2014
8-K Report 8-K Nov 24, 2014 Nov 18, 2014
8-K Report 8-K Nov 14, 2014 Nov 14, 2014
8-K Report 8-K Nov 12, 2014 Nov 5, 2014
8-K Report 8-K Nov 10, 2014 Nov 10, 2014
8-K Report FORM 8-K Nov 10, 2014 Nov 4, 2014
8-K Report 8-K Nov 3, 2014 Nov 3, 2014
8-K Report 8-K Oct 30, 2014 Oct 30, 2014
8-K Report 8-K Oct 27, 2014 Oct 27, 2014
8-K Report 8-K Oct 23, 2014 Oct 23, 2014
10-Q Report | Data 10-Q Oct 23, 2014 Sep 30, 2014
8-K Report 8-K Oct 6, 2014 Oct 1, 2014
8-K Report 8-K Sep 10, 2014 Sep 10, 2014
8-K Report 8-K Jul 24, 2014 Jul 24, 2014
10-Q Report | Data 10-Q JUNE 30, 2014 Jul 24, 2014 Jun 30, 2014
8-K Report 8-K May 16, 2014 May 16, 2014
8-K Report 8-K May 5, 2014 May 5, 2014
8-K Report 8-K Apr 29, 2014 Apr 24, 2014
10-Q Report | Data 10-Q Apr 24, 2014 Mar 31, 2014
8-K Report 8-K Apr 24, 2014 Apr 24, 2014
8-K Report 8-K Apr 2, 2014 Apr 2, 2014
8-K Report 8-K Mar 20, 2014 Mar 20, 2014
8-K Report 8-K Mar 4, 2014 Mar 4, 2014
8-K Report 8-K Feb 24, 2014 Feb 18, 2014
8-K Report 8-K Feb 19, 2014 Feb 19, 2014
10-K Report | Data FORM 10-K DECEMBER 31, 2013 Feb 19, 2014 Dec 31, 2013
SC 13G Report NORTHWESTERN CORP 13G Feb 12, 2014
SC 13G/A Report Feb 12, 2014
SC 13G/A Report NWE AS OF 12/31/2013 Feb 10, 2014
SC 13G/A Report Jan 17, 2014
SC 13G/A Report Jan 10, 2014
8-K Report 8-K Dec 23, 2013 Dec 19, 2013
8-K Report 8-K Dec 16, 2013 Dec 10, 2013
8-K Report 8-K Dec 9, 2013 Dec 9, 2013
8-K Report 8-K Nov 18, 2013 Nov 12, 2013
8-K Report 8-K Nov 12, 2013 Nov 11, 2013
8-K Report 8-K Nov 8, 2013 Nov 5, 2013
8-K Report 8-K Oct 24, 2013 Oct 24, 2013
10-Q Report | Data 10-Q Oct 24, 2013 Sep 30, 2013
8-K Report 8-K Sep 27, 2013 Sep 26, 2013
8-K Report 8-K Jul 30, 2013 Jul 30, 2013
8-K Report 8-K Jul 25, 2013 Jul 25, 2013
10-Q Report | Data 10-Q Jul 25, 2013 Jun 30, 2013
8-K Report 8-K Jul 16, 2013 Jul 15, 2013
8-K Report 8-K Jun 12, 2013 Jun 12, 2013
8-K Report 8-K May 29, 2013 May 28, 2013
8-K Report 8-K May 3, 2013 May 3, 2013
8-K Report 8-K Apr 30, 2013 Apr 25, 2013
8-K Report Q1 2013 FORM 8-K Apr 25, 2013 Apr 25, 2013
10-Q Report | Data FORM 10Q MARCH 31, 2013 Apr 25, 2013 Mar 31, 2013
8-K Report 8-K Mar 21, 2013 Mar 21, 2013
8-K Report 8-K Mar 4, 2013 Mar 4, 2013
8-K Report 8-K Feb 19, 2013 Feb 19, 2013
8-K Report 8-K Feb 19, 2013 Feb 13, 2013
8-K Report 8-K Feb 14, 2013 Feb 14, 2013
10-K Report | Data 10-K Feb 14, 2013 Dec 31, 2012
SC 13G Report MUNDER 13G FILING FOR NORTHWESTERN CORPORATION Feb 13, 2013
SC 13G/A Report NWE AS OF 12/31/12 Feb 11, 2013
SC 13G/A Report Feb 11, 2013
SC 13G Report NORTHWESTERN CORPORATION SC 13G Jan 29, 2013
SC 13G/A Report Jan 11, 2013
8-K Report 8-K Dec 18, 2012 Dec 12, 2012
8-K Report 8-K Dec 10, 2012 Dec 10, 2012
8-K Report 8-K Dec 4, 2012 Dec 4, 2012
8-K Report 8-K Nov 9, 2012 Nov 9, 2012
8-K Report 8-K Nov 9, 2012 Nov 9, 2012
SC 13G/A Report Nov 9, 2012
8-K Report FORM 8-K EARNINGS RELEASE Q3 2012 Oct 24, 2012 Oct 24, 2012
10-Q Report | Data 10-Q Oct 24, 2012 Sep 30, 2012
8-K Report 8-K Oct 11, 2012 Oct 5, 2012
8-K Report 8-K Oct 2, 2012 Oct 1, 2012
8-K Report 8-K DGGS INITIAL DECISION Sep 27, 2012 Sep 26, 2012
8-K Report 8-K Sep 4, 2012 Sep 4, 2012
8-K Report Aug 14, 2012 Aug 10, 2012
8-K Report Jul 26, 2012 Jul 24, 2012
8-K Report FORM 8-K PRESS RELEASE Q2 2012 Jul 24, 2012 Jul 24, 2012
10-Q Report | Data FORM 10Q FOR JUNE 30, 2012 Jul 24, 2012 Jun 30, 2012
8-K Report Jun 12, 2012 Jun 12, 2012
8-K Report 8-K_04/27/2012_VOTING RESULTS Apr 27, 2012 Apr 27, 2012
8-K Report 8-K _ 04/25/2012 Apr 25, 2012 Apr 25, 2012
8-K Report 8-K_04/25/2012_EARNINGS RELEASE Apr 25, 2012 Apr 25, 2012
10-Q Report | Data FORM 10-Q MARCH 31, 2012 Apr 25, 2012 Mar 31, 2012
8-K Report 8-K_03/20/2012 SIDOTI WILLIAMS PRESENTATION Mar 19, 2012 Mar 19, 2012
8-K Report 8-K_03/05/2012 Mar 5, 2012 Mar 5, 2012
8-K Report 8-K_02/29/2012 Feb 29, 2012 Feb 29, 2012
8-K Report 8-K_02/21/2012 LONG-TERM COMP Feb 21, 2012 Feb 21, 2012
8-K Report 8-K_2011 FULL YEAR FINANCIAL RESULTS Feb 16, 2012 Feb 16, 2012
10-K Report | Data NORTHWESTERN CORPORATION FORM 10-K Feb 16, 2012 Dec 31, 2011
SC 13G/A Report MUNDER LIVE FILING FOR NORTHWESTERN CORPORATION Feb 13, 2012
SC 13G/A Report MUNDER FILING FOR NOTHWESTERN CORPORATION Feb 13, 2012
SC 13G/A Report Feb 9, 2012
SC 13G/A Report 12/31/2011 Feb 8, 2012
SC 13G/A Report Feb 8, 2012
SC 13G/A Report NORTHWESTERN CORPORATION Feb 8, 2012
8-K Report 8-K_01/11/2012_TRANSMISSION PRESENTATION Jan 11, 2012 Jan 11, 2012
8-K Report 8-K INVESTOR PRESENTATION-12/20/11 Dec 20, 2011 Dec 20, 2011
8-K Report 8-K_EXECUTIVE COMPENSATION Dec 9, 2011 Dec 9, 2011
8-K Report 8-K_11/08/2011 Nov 7, 2011 Nov 7, 2011
8-K Report 8-K_BYLAWS AMENDMENT Oct 31, 2011 Oct 31, 2011
8-K Report 8-K _ 10/26/2011 Oct 26, 2011 Oct 26, 2011
10-Q Report | Data Oct 26, 2011 Sep 30, 2011
8-K Report 8-K 09/27/2011 Sep 27, 2011 Sep 27, 2011
8-K Report 8-K_09/19/2011 Sep 19, 2011 Sep 19, 2011
8-K Report 8-K_08-31-2011 Aug 29, 2011 Aug 29, 2011
8-K Report 8-K_EARNINGS RELEASE Jul 27, 2011 Jul 27, 2011
10-Q Report | Data FORM 10-Q JUNE 30, 2011 Jul 27, 2011 Jun 30, 2011
8-K Report 8-K_07/07/2011 Jul 7, 2011 Jul 7, 2011
8-K Report 8-K_06/06/2011 Jun 3, 2011 Jun 3, 2011
8-K Report 8-K_05/26/2011 May 25, 2011 May 25, 2011
8-K Report ANNUAL MEETING VOTING RESULTS Apr 29, 2011 Apr 27, 2011
8-K Report EARNING RELEASE AND ANNUAL MEETING PRESENTATION Apr 27, 2011 Apr 27, 2011
10-Q Report | Data FORM 10-Q FOR THE PERIOD ENDED MARCH 31, 2011 Apr 27, 2011 Mar 31, 2011
8-K Report 8-K 04/13/2011 Apr 13, 2011 Apr 13, 2011
8-K Report 8-K_04/08/2011_AMENDED LTIP Apr 11, 2011 Apr 8, 2011
8-K Report 8-K_04/04/2011 Apr 4, 2011 Apr 4, 2011
8-K Report 8-K_03/24/2011 Mar 24, 2011 Mar 24, 2011
8-K Report 2011 INVESTOR UPDATE_SAN FRANCISCO Feb 28, 2011 Feb 28, 2011
8-K Report 8-K_02/16/2011 Feb 16, 2011 Feb 16, 2011
SC 13G/A Report LIVE MUNDER FILING FOR NORTHWESTERN CORP 13-GA Feb 14, 2011
8-K Report 8-K_02/14/2011 Feb 14, 2011 Feb 14, 2011
8-K Report 8-K_02/11/2011 Feb 11, 2011 Feb 11, 2011
10-K Report | Data Feb 11, 2011 Dec 31, 2010
SC 13G Report Feb 10, 2011
SC 13G Report NORTHWESTERN CORP Feb 10, 2011
SC 13G Report NWE AS OF 12/31/10 Feb 9, 2011
SC 13G/A Report Feb 2, 2011
8-K Report 8-K_12/07/2010 Dec 7, 2010 Dec 6, 2010
8-K Report 8-K 11/15/2010 Nov 15, 2010 Nov 15, 2010
8-K Report 8-K _ 11/01/2010 Nov 1, 2010 Nov 1, 2010
10-Q Report 10-Q_09/30/10 Oct 28, 2010 Oct 27, 2010
8-K Report 8-K EARNINGS RELEASE Oct 28, 2010 Oct 27, 2010
10-Q/A Report | Data 10-Q/A 09/30/2010 Oct 28, 2010 Oct 27, 2010
8-K Report 8-K_BATTLE CREEK ACQUISITION Sep 23, 2010 Sep 23, 2010
8-K Report 8-K INVESTOR PRESENTATION Sep 1, 2010 Sep 1, 2010
8-K Report 8-K ANALYST TELECONFERENCE Aug 18, 2010 Aug 18, 2010
8-K Report 8-K_Q2 2010 EARNINGS RELEASE Jul 29, 2010 Jul 29, 2010
10-Q Report | Data 10-Q_6/30/2010 Jul 29, 2010 Jul 28, 2010
8-K Report 8-K BOND PURCHASE AGMT Apr 30, 2010 Apr 30, 2010
8-K Report 8-K_04/22/10 EARNINGS RELEASE Apr 23, 2010 Apr 23, 2010
10-Q Report 10Q_03/31/2010 Apr 23, 2010 Apr 22, 2010
8-K Report 8-K_04/22/10 (ANNUAL MEETING) Apr 22, 2010 Apr 22, 2010
8-K Report 8-K_03-03-2010 INVESTOR UPDATE Mar 3, 2010 Mar 3, 2010
8-K Report 8-K_ST INCENTIVE COMP PLAN Feb 19, 2010 Feb 19, 2010
SC 13G/A Report Feb 16, 2010
8-K Report 8-K 02/12/2010 Feb 12, 2010 Feb 12, 2010
10-K Report 10-K 12/31/2009 Feb 12, 2010 Feb 11, 2010
SC 13G/A Report NORTHWESTERN CORPORATION 13GA MUNDER FILING Feb 11, 2010
SC 13G Report Jan 29, 2010
8-K Report 8-K_MIGGIE CRAMBLIT DEPARTURE Jan 8, 2010 Jan 8, 2010
8-K Report 8-K 01/07/2010 Jan 6, 2010 Jan 6, 2010
10-Q Report Q3-2009 Oct 29, 2009 Oct 28, 2009
10-Q Report Jul 29, 2009 Jul 28, 2009
10-Q Report Apr 23, 2009 Mar 31, 2009
10-K Report Feb 13, 2009 Dec 31, 2008
10-Q Report Oct 30, 2008 Sep 30, 2008
10-Q Report Jul 31, 2008 Jun 30, 2008
10-Q Report Apr 24, 2008 Mar 31, 2008
10-K Report Feb 26, 2008 Dec 31, 2007
10-Q Report FORM 10-Q 3RD QTR. 2007 Oct 31, 2007 Sep 30, 2007
10-Q Report Aug 8, 2007 Jun 30, 2007
10-Q Report May 2, 2007 Mar 31, 2007
10-K Report Feb 28, 2007 Dec 31, 2006
10-Q Report Nov 2, 2006 Sep 30, 2006
10-Q Report Aug 3, 2006 Jun 30, 2006
10-Q Report FORM 10-Q MARCH 31, 2006 May 4, 2006 Mar 31, 2006
10-K Report ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) Mar 3, 2006 Dec 31, 2005
10-Q Report QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) Nov 9, 2005 Sep 30, 2005
10-Q Report 10-Q Aug 2, 2005 Jun 30, 2005
10-Q Report 10-Q May 10, 2005 Mar 31, 2005
10-K Report 10-K Mar 14, 2005 Dec 31, 2004
10-Q Report 10-Q Nov 8, 2004 Sep 30, 2004
10-Q Report 10-Q Aug 6, 2004 Jun 30, 2004
10-Q Report FORM 10-Q May 7, 2004 Mar 31, 2004
10-K Report 10-K Mar 15, 2004 Dec 31, 2003
10-Q Report 10-Q Nov 14, 2003 Sep 30, 2003
10-Q Report FORM 10-Q Aug 14, 2003 Jun 30, 2003
10-Q Report 10-Q May 15, 2003 Mar 31, 2003
10-K Report FORM 10-K Apr 15, 2003 Dec 31, 2002
10-Q Report FORM 10-Q Nov 14, 2002 Sep 30, 2002
10-Q Report 10-Q Aug 14, 2002 Jun 30, 2002
10-Q Report 10-Q May 15, 2002 Mar 31, 2002
10-Q Report 10-Q Nov 14, 2001 Sep 30, 2001
10-Q Report 10-Q Aug 14, 2001 Jun 30, 2001
10-Q Report FORM 10-Q May 15, 2001 Mar 31, 2001
10-Q Report 10-Q Nov 13, 2000 Sep 30, 2000
10-Q Report 10-Q Aug 14, 2000 Jun 30, 2000
10-Q Report MARCH 31, 2000 10Q May 15, 2000 Mar 31, 2000
10-K Report Mar 30, 2000 Dec 31, 1999
10-Q Report 10-Q FOR 09/30/99 Nov 15, 1999 Sep 30, 1999
10-Q Report 10-Q FOR 06/30/99 Aug 16, 1999 Jun 30, 1999
10-Q Report 10-Q FOR 03/31/99 May 17, 1999 Mar 31, 1999
10-K Report 10K FOR DECEMBER 31, 1998 Mar 31, 1999 Dec 31, 1998
10-Q Report 10-Q FOR 09/30/98 Nov 12, 1998 Sep 30, 1998
10-Q Report 10-Q FOR 06/30/98 Aug 14, 1998 Jun 30, 1998
10-Q Report 10-Q FOR 03/31/98 May 15, 1998 Mar 31, 1998
10-K Report Mar 31, 1998 Dec 31, 1997
10-Q Report 10-Q FOR 9/30/97 Nov 14, 1997 Sep 30, 1997
10-Q Report 10-Q FOR 6/30/97 Aug 14, 1997 Jun 30, 1997
10-Q Report 10-Q FOR 3/31/97 May 15, 1997 Mar 31, 1997
10-K Report Mar 31, 1997 Dec 31, 1996
10-Q Report 10-Q FOR 9/30/96 Nov 14, 1996 Sep 30, 1996
10-Q Report 10-Q FOR 6/30/96 Aug 14, 1996 Jun 30, 1996
10-Q Report 10-Q FOR 3/31/96 May 14, 1996 Mar 31, 1996
10-K Report Apr 1, 1996 Dec 31, 1995
10-Q Report 10-Q FOR 9/30/95 Nov 14, 1995 Sep 30, 1995
10-Q Report 10-Q FOR 6/30/95 Aug 14, 1995 Jun 30, 1995