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Mailing Address 7001 MT RUSHMORE RD PO BOX 1400 RAPID SD 57709
Business Address 7001 MT RUSHMORE RD PO BOX 1400 RAPID CITY SD 57709 6057212343
BLACK HILLS CORP /SD/ CIK#: 0001130464 (see all company filings)

SIC: 4911 - ELECTRIC SERVICES
State location: SD | State of Inc.: SD | Fiscal Year End: 1231
formerly: BLACK HILLS HOLDING CORP (filings through 2000-12-26)
(CF Office: 01 Energy & Transportation)
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Items 1 - 40  0001130464 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, 8.01, and 9.01
Acc-no: 0001104659-24-062524 (34 Act)  Size: 781 KB
2024-05-16 001-31303
24955620
424B2  Documents Prospectus [Rule 424(b)(2)]
Acc-no: 0001104659-24-061208 (33 Act)  Size: 664 KB
2024-05-14 333-272739
24945266
FWP  Documents Filing under Securities Act Rules 163/433 of free writing prospectuses
Acc-no: 0001104659-24-060533 (34 Act)  Size: 18 KB
2024-05-13 333-272739
24939181
424B5  Documents Prospectus [Rule 424(b)(5)]
Acc-no: 0001104659-24-060257 (33 Act)  Size: 651 KB
2024-05-13 333-272739
24937043
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-24-056459 (34 Act)  Size: 9 MB
2024-05-09 001-31303
24929336
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-24-055713 (34 Act)  Size: 597 KB
2024-05-08 001-31303
24926396
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0000950170-24-048746 (34 Act)  Size: 164 KB
2024-04-26 001-31303
24880020
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0000950170-24-048335 (34 Act)  Size: 143 KB
2024-04-25 001-31303
24876509
ARS  Documents Annual Report to Security Holders
Acc-no: 0000950170-24-032222 (34 Act)  Size: 3 MB
2024-03-15 001-31303
24755165
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0000950170-24-032219 (34 Act)  Size: 5 MB
2024-03-15 001-31303
24755151
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0000950170-24-015090 (34 Act)  Size: 25 MB
2024-02-14 001-31303
24635353
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-24-020019 (34 Act)  Size: 13 KB
2024-02-13 005-80081
24627076
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-24-012259 (34 Act)  Size: 931 KB
2024-02-07 001-31303
24604785
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000093751-24-000259 (34 Act)  Size: 8 KB
2024-01-25 005-80081
24561520
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-001073 (34 Act)  Size: 13 KB
2024-01-22 005-80081
24548735
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-23-057904 (34 Act)  Size: 15 MB
2023-11-02 001-31303
231370932
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-23-057468 (34 Act)  Size: 1 MB
2023-11-01 001-31303
231368538
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, 8.01, and 9.01
Acc-no: 0001104659-23-101196 (34 Act)  Size: 497 KB
2023-09-15 001-31303
231258774
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001104659-23-099727 (34 Act)  Size: 495 KB
2023-09-11 001-31303
231248301
424B2  Documents Prospectus [Rule 424(b)(2)]
Acc-no: 0001104659-23-098919 (33 Act)  Size: 713 KB
2023-09-07 333-272739
231242007
FWP  Documents Filing under Securities Act Rules 163/433 of free writing prospectuses
Acc-no: 0001104659-23-098685 (34 Act)  Size: 17 KB
2023-09-06 333-272739
231239971
424B5  Documents Prospectus [Rule 424(b)(5)]
Acc-no: 0001104659-23-098512 (33 Act)  Size: 701 KB
2023-09-06 333-272739
231237904
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-23-037718 (34 Act)  Size: 18 MB
2023-08-03 001-31303
231138836
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-23-037221 (34 Act)  Size: 1 MB
2023-08-02 001-31303
231136104
POSASR  Documents Post-effective Amendment to an automatic shelf registration statement
Acc-no: 0000950170-23-032385 (33 Act)  Size: 58 KB
2023-07-10 333-240319
231079930
11-K  Documents Annual report of employee stock purchase, savings and similar plans
Acc-no: 0000950170-23-029410 (34 Act)  Size: 458 KB
2023-06-22 001-31303
231033440
8-K  Documents   Interactive Data Current report, items 1.01, 1.02, and 9.01
Acc-no: 0001104659-23-072376 (34 Act)  Size: 970 KB
2023-06-20 001-31303
231022607
424B5  Documents Prospectus [Rule 424(b)(5)]
Acc-no: 0001104659-23-072348 (33 Act)  Size: 603 KB
2023-06-16 333-272739
231022347
S-3ASR  Documents Automatic shelf registration statement of securities of well-known seasoned issuers
Acc-no: 0001104659-23-072309 (33 Act)  Size: 1 MB
2023-06-16 333-272739
231022025
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0000950170-23-028050 (34 Act)  Size: 233 KB
2023-06-15 001-31303
231015553
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-23-017598 (34 Act)  Size: 13 MB
2023-05-04 001-31303
23887327
8-K  Documents   Interactive Data Current report, items 2.02, 5.03, and 9.01
Acc-no: 0000950170-23-017280 (34 Act)  Size: 1 MB
2023-05-03 001-31303
23885060
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0000950170-23-015305 (34 Act)  Size: 191 KB
2023-04-27 001-31303
23857383
ARS  Documents Annual Report to Security Holders
Acc-no: 0000950170-23-008023 (34 Act)  Size: 3 MB
2023-03-15 001-31303
23733923
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0000950170-23-008021 (34 Act)  Size: 6 MB
2023-03-15 001-31303
23733909
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, 8.01, and 9.01
Acc-no: 0000950170-23-006487 (34 Act)  Size: 1 MB
2023-03-07 001-31303
23713462
424B2  Documents Prospectus [Rule 424(b)(2)]
Acc-no: 0001104659-23-028354 (33 Act)  Size: 709 KB
2023-03-03 333-240320
23703130
FWP  Documents Filing under Securities Act Rules 163/433 of free writing prospectuses
Acc-no: 0001104659-23-027896 (34 Act)  Size: 17 KB
2023-03-02 333-240320
23698677
424B5  Documents Prospectus [Rule 424(b)(5)]
Acc-no: 0001104659-23-027702 (33 Act)  Size: 694 KB
2023-03-02 333-240320
23696581
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0000950170-23-002759 (34 Act)  Size: 40 MB
2023-02-14 001-31303
23627179