53 results
10-K
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22 Feb 19
Annual report
12:00am
8-K
EX-99.1
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25 May 18
Merger of Great Plains Energy and Westar Energy Approved, Paving Way for Benefits
4:31pm
8-K
EX-99.1
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9 Dec 14
Regulation FD Disclosure
12:00am
8-K
EX-99.1
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10 Nov 14
Regulation FD Disclosure
12:00am
8-K
EX-99.1
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15 Sep 14
Entry into a Material Definitive Agreement
12:00am
8-K
EX-99.1
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11 Aug 14
Departure of Directors or Certain Officers
12:00am
8-K
EX-99.1
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9 Jun 14
Regulation FD Disclosure
12:00am
8-K
EX-99.1
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25 Mar 14
Regulation FD Disclosure
12:00am