Black Hills Corporation

BKH·NYSE·$74.76Share Price as of 11/2·$6BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202502/11/26 10-QQ3 ended 09/30/2511/06/25 10-QQ2 ended 06/30/2507/31/25

Disclosures

8-KCurrent report10/23/26 8-KCurrent report10/06/26 8-KCurrent report08/17/26 8-KCurrent report08/05/26 8-KCurrent report05/15/26

Prospectuses and Registrations

424B5Prospectus supplement05/19/26 S-3ASRAutomatic shelf registration05/19/26 424B3Prospectus02/06/26 S-4Registration (business combination)01/30/26 424B2Prospectus for primary offering09/26/25

Proxies

DEF 14ADefinitive proxy03/18/26 DEF 14ADefinitive proxy03/14/25 DEF 14ADefinitive proxy03/15/24 DEF 14ADefinitive proxy03/15/23 DEF 14ADefinitive proxy03/17/22

Ownership

Form 4Insider transaction05/28/26 SC 13GBeneficial ownership05/12/26 Form 4Insider transaction05/04/26 Form 4Insider transaction05/04/26 Form 4Insider transaction05/04/26

Other

11-KEmployee stock purchase plan report06/18/26 ARSAnnual report to shareholders03/18/26 EFFECTRequest for effectiveness02/06/26 CORRESPCorrespondence with the SEC02/05/26 CORRESPCorrespondence with the SEC02/04/26