SEC Filings for BLACK HILLS CORP /SD/ (BKH)

Last updated: 2026-03-26 21:10 UTC | Total filings: 1017

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Form Filing Date Description Link
SCHEDULE 13G/A March 26, 2026 - View Document
DEF 14A March 18, 2026 DEF 14A View Document
ARS March 18, 2026 ARS View Document
8-K Feb. 19, 2026 8-K View Document
4 Feb. 18, 2026 PRIMARY DOCUMENT View Document
4 Feb. 13, 2026 PRIMARY DOCUMENT View Document
4 Feb. 13, 2026 PRIMARY DOCUMENT View Document
4 Feb. 13, 2026 PRIMARY DOCUMENT View Document
10-K Feb. 11, 2026 10-K View Document
4 Feb. 10, 2026 PRIMARY DOCUMENT View Document
4 Feb. 10, 2026 PRIMARY DOCUMENT View Document
4 Feb. 10, 2026 PRIMARY DOCUMENT View Document
4 Feb. 10, 2026 PRIMARY DOCUMENT View Document
4 Feb. 10, 2026 PRIMARY DOCUMENT View Document
4 Feb. 10, 2026 PRIMARY DOCUMENT View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
424B3 Feb. 6, 2026 424B3 View Document
EFFECT Feb. 6, 2026 - View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
5 Feb. 6, 2026 PRIMARY DOCUMENT View Document
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5 Feb. 5, 2026 PRIMARY DOCUMENT View Document
5 Feb. 5, 2026 PRIMARY DOCUMENT View Document
8-K Feb. 4, 2026 8-K View Document
S-4 Jan. 30, 2026 S-4 View Document
4 Nov. 12, 2025 PRIMARY DOCUMENT View Document
4 Nov. 10, 2025 PRIMARY DOCUMENT View Document
10-Q Nov. 6, 2025 10-Q View Document
8-K Nov. 5, 2025 8-K View Document
DRS Oct. 30, 2025 - View Document
3 Oct. 17, 2025 PRIMARY DOCUMENT View Document
8-K Oct. 2, 2025 FORM 8-K View Document
8-K Sept. 29, 2025 FORM 8-K View Document
424B2 Sept. 26, 2025 424B2 View Document
424B5 Sept. 25, 2025 424B5 View Document
FWP Sept. 25, 2025 FWP View Document
8-K Sept. 15, 2025 8-K View Document
4 Aug. 21, 2025 PRIMARY DOCUMENT View Document
3 Aug. 20, 2025 PRIMARY DOCUMENT View Document
425 Aug. 19, 2025 425 View Document
8-K Aug. 19, 2025 FORM 8-K View Document
8-K Aug. 19, 2025 FORM 8-K View Document
10-Q July 31, 2025 10-Q View Document
8-K July 30, 2025 8-K View Document
11-K June 23, 2025 11-K View Document
8-K May 8, 2025 FORM 8-K View Document
8-K May 8, 2025 8-K View Document
10-Q May 8, 2025 10-Q View Document
424B5 May 8, 2025 424B5 View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
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4 May 2, 2025 PRIMARY DOCUMENT View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
4 May 2, 2025 PRIMARY DOCUMENT View Document
3 April 28, 2025 PRIMARY DOCUMENT View Document
3 April 28, 2025 PRIMARY DOCUMENT View Document
8-K April 25, 2025 8-K View Document
ARS March 14, 2025 ARS View Document
DEF 14A March 14, 2025 DEF 14A View Document
4 Feb. 20, 2025 PRIMARY DOCUMENT View Document
5 Feb. 18, 2025 PRIMARY DOCUMENT View Document
5 Feb. 14, 2025 PRIMARY DOCUMENT View Document
5 Feb. 14, 2025 PRIMARY DOCUMENT View Document
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4 Feb. 13, 2025 PRIMARY DOCUMENT View Document
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4 Feb. 13, 2025 PRIMARY DOCUMENT View Document
10-K Feb. 12, 2025 10-K View Document
4 Feb. 10, 2025 PRIMARY DOCUMENT View Document
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4 Feb. 10, 2025 PRIMARY DOCUMENT View Document
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5 Feb. 10, 2025 PRIMARY DOCUMENT View Document
5 Feb. 10, 2025 PRIMARY DOCUMENT View Document
8-K Feb. 7, 2025 8-K View Document
8-K Feb. 5, 2025 8-K View Document
3 Nov. 19, 2024 PRIMARY DOCUMENT View Document
4 Nov. 12, 2024 PRIMARY DOCUMENT View Document
10-Q Nov. 7, 2024 10-Q View Document
3 Nov. 7, 2024 PRIMARY DOCUMENT View Document
8-K Nov. 6, 2024 8-K View Document
8-K Nov. 1, 2024 8-K View Document
8-K Aug. 12, 2024 8-K View Document
10-Q Aug. 1, 2024 10-Q View Document
8-K July 31, 2024 8-K View Document
11-K June 20, 2024 11-K View Document
8-K June 5, 2024 8-K View Document
4 June 3, 2024 PRIMARY DOCUMENT View Document
144 May 30, 2024 - View Document
8-K May 16, 2024 FORM 8-K View Document
424B2 May 14, 2024 424B2 View Document
424B5 May 13, 2024 424B5 View Document
FWP May 13, 2024 FWP View Document
10-Q May 9, 2024 10-Q View Document
8-K May 8, 2024 8-K View Document
4 May 2, 2024 PRIMARY DOCUMENT View Document
4 May 2, 2024 PRIMARY DOCUMENT View Document
4 May 2, 2024 PRIMARY DOCUMENT View Document
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4 May 2, 2024 PRIMARY DOCUMENT View Document
4 May 2, 2024 PRIMARY DOCUMENT View Document
8-K April 26, 2024 8-K View Document
8-K April 25, 2024 8-K View Document
DEF 14A March 15, 2024 DEF 14A View Document
ARS March 15, 2024 ARS View Document
4 March 6, 2024 PRIMARY DOCUMENT View Document
10-K Feb. 14, 2024 10-K View Document
5 Feb. 13, 2024 PRIMARY DOCUMENT View Document
4 Feb. 13, 2024 PRIMARY DOCUMENT View Document
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4 Feb. 13, 2024 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 13, 2024 SCHEDULE 13G/A View Document
5 Feb. 13, 2024 PRIMARY DOCUMENT View Document
5 Feb. 13, 2024 PRIMARY DOCUMENT View Document
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8-K Feb. 7, 2024 8-K View Document
SC 13G/A Jan. 25, 2024 - View Document
SC 13G/A Jan. 22, 2024 - View Document
4 Dec. 29, 2023 PRIMARY DOCUMENT View Document
10-Q Nov. 2, 2023 10-Q View Document
8-K Nov. 1, 2023 8-K View Document
8-K Sept. 15, 2023 FORM 8-K View Document
8-K Sept. 11, 2023 FORM 8-K View Document
424B2 Sept. 7, 2023 424B2 View Document
FWP Sept. 6, 2023 FWP View Document
424B5 Sept. 6, 2023 424B5 View Document
10-Q Aug. 3, 2023 10-Q View Document
8-K Aug. 2, 2023 8-K View Document
POSASR July 10, 2023 POSASR View Document
3 June 26, 2023 PRIMARY DOCUMENT View Document
3 June 26, 2023 PRIMARY DOCUMENT View Document
11-K June 22, 2023 11-K View Document
8-K June 20, 2023 FORM 8-K View Document
S-3ASR June 16, 2023 S-3ASR View Document
424B5 June 16, 2023 424B5 View Document
8-K June 15, 2023 8-K View Document
4 May 9, 2023 PRIMARY DOCUMENT View Document
144 May 8, 2023 - View Document
10-Q May 4, 2023 10-Q View Document
4 May 3, 2023 PRIMARY DOCUMENT View Document
4 May 3, 2023 PRIMARY DOCUMENT View Document
4 May 3, 2023 PRIMARY DOCUMENT View Document
4 May 3, 2023 PRIMARY DOCUMENT View Document
8-K May 3, 2023 8-K View Document
4 May 3, 2023 PRIMARY DOCUMENT View Document
4 May 3, 2023 PRIMARY DOCUMENT View Document
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4 May 2, 2023 PRIMARY DOCUMENT View Document
4 May 2, 2023 PRIMARY DOCUMENT View Document
8-K April 27, 2023 8-K View Document
3 April 6, 2023 PRIMARY DOCUMENT View Document
ARS March 15, 2023 ARS View Document
DEF 14A March 15, 2023 DEF 14A View Document
8-K March 7, 2023 8-K View Document
424B2 March 3, 2023 424B2 View Document
FWP March 2, 2023 FWP View Document
424B5 March 2, 2023 424B5 View Document
4 Feb. 14, 2023 PRIMARY DOCUMENT View Document
10-K Feb. 14, 2023 10-K View Document
4 Feb. 14, 2023 PRIMARY DOCUMENT View Document
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4 Feb. 13, 2023 PRIMARY DOCUMENT View Document
4 Feb. 13, 2023 PRIMARY DOCUMENT View Document
4 Feb. 13, 2023 PRIMARY DOCUMENT View Document
4 Feb. 13, 2023 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 9, 2023 SCHEDULE 13G/A View Document
SC 13G/A Feb. 9, 2023 - View Document
8-K Feb. 7, 2023 8-K View Document
5 Feb. 1, 2023 PRIMARY DOCUMENT View Document
5 Feb. 1, 2023 PRIMARY DOCUMENT View Document
5 Feb. 1, 2023 PRIMARY DOCUMENT View Document
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SC 13G/A Jan. 26, 2023 - View Document
SC 13G/A Jan. 20, 2023 - View Document
10-Q Nov. 3, 2022 10-Q View Document
8-K Nov. 2, 2022 8-K View Document
8-K Oct. 27, 2022 8-K View Document
10-Q Aug. 4, 2022 10-Q View Document
8-K Aug. 3, 2022 8-K View Document
SC 13G/A July 11, 2022 - View Document
4 June 28, 2022 PRIMARY DOCUMENT View Document
11-K June 23, 2022 11-K View Document
4 June 3, 2022 PRIMARY DOCUMENT View Document
4 May 23, 2022 PRIMARY DOCUMENT View Document
4 May 10, 2022 PRIMARY DOCUMENT View Document
S-8 May 5, 2022 S-8 View Document
10-Q May 5, 2022 10-Q View Document
8-K May 4, 2022 8-K View Document
4 May 3, 2022 PRIMARY DOCUMENT View Document
4 May 3, 2022 PRIMARY DOCUMENT View Document
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4 May 3, 2022 PRIMARY DOCUMENT View Document
8-K April 28, 2022 8-K View Document
DEF 14A March 17, 2022 DEF 14A View Document
4 Feb. 15, 2022 PRIMARY DOCUMENT View Document
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10-K Feb. 15, 2022 10-K View Document
4 Feb. 14, 2022 PRIMARY DOCUMENT View Document
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SC 13G/A Feb. 10, 2022 - View Document
8-K Feb. 9, 2022 8-K View Document
SC 13G/A Feb. 9, 2022 SCHEDULE 13G/A View Document
SC 13G/A Jan. 28, 2022 - View Document
5 Jan. 12, 2022 PRIMARY DOCUMENT View Document
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4 Dec. 2, 2021 PRIMARY DOCUMENT View Document
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4 Dec. 2, 2021 PRIMARY DOCUMENT View Document
4 Nov. 5, 2021 PRIMARY DOCUMENT View Document
10-Q Nov. 3, 2021 10-Q View Document
8-K Nov. 2, 2021 8-K View Document
4 Oct. 8, 2021 PRIMARY DOCUMENT View Document
8-K Sept. 17, 2021 8-K View Document
4 Sept. 2, 2021 PRIMARY DOCUMENT View Document
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4 Sept. 2, 2021 PRIMARY DOCUMENT View Document
4 Sept. 2, 2021 PRIMARY DOCUMENT View Document
8-K Aug. 26, 2021 FORM 8-K View Document
424B2 Aug. 24, 2021 424B2 View Document
424B5 Aug. 23, 2021 424B5 View Document
FWP Aug. 23, 2021 FWP View Document
4 Aug. 5, 2021 PRIMARY DOCUMENT View Document
10-Q Aug. 4, 2021 10-Q View Document
4 Aug. 4, 2021 PRIMARY DOCUMENT View Document
8-K Aug. 3, 2021 8-K View Document
8-K July 19, 2021 8-K View Document
4 July 19, 2021 PRIMARY DOCUMENT View Document
4 July 15, 2021 PRIMARY DOCUMENT View Document
4 July 9, 2021 PRIMARY DOCUMENT View Document
11-K June 22, 2021 11-K View Document
4 June 1, 2021 PRIMARY DOCUMENT View Document
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4 May 10, 2021 PRIMARY DOCUMENT View Document
4 May 7, 2021 PRIMARY DOCUMENT View Document
10-Q May 5, 2021 10-Q View Document
8-K May 4, 2021 8-K View Document
8-K/A April 29, 2021 8-K/A View Document
8-K April 29, 2021 8-K View Document
4 April 9, 2021 PRIMARY DOCUMENT View Document
DEF 14A March 18, 2021 DEF 14A View Document
4 March 2, 2021 PRIMARY DOCUMENT View Document
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10-K Feb. 26, 2021 10-K View Document
8-K Feb. 25, 2021 8-K View Document
4 Feb. 16, 2021 PRIMARY DOCUMENT View Document
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SC 13G Feb. 11, 2021 - View Document
SC 13G/A Feb. 10, 2021 SCHEDULE 13G/A View Document
4 Feb. 9, 2021 PRIMARY DOCUMENT View Document
8-K Feb. 9, 2021 8-K View Document
4 Feb. 9, 2021 PRIMARY DOCUMENT View Document
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SC 13G/A Feb. 4, 2021 SEC SCHEDULE 13G View Document
SC 13G/A Jan. 26, 2021 - View Document
4 Jan. 8, 2021 PRIMARY DOCUMENT View Document
4 Dec. 3, 2020 PRIMARY DOCUMENT View Document
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10-Q Nov. 3, 2020 10-Q View Document
8-K Nov. 2, 2020 8-K View Document
3 Oct. 29, 2020 PRIMARY DOCUMENT View Document
4 Oct. 9, 2020 PRIMARY DOCUMENT View Document
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8-K Sept. 18, 2020 8-K View Document
4 Sept. 16, 2020 PRIMARY DOCUMENT View Document
4 Sept. 14, 2020 PRIMARY DOCUMENT View Document
4/A Sept. 3, 2020 PRIMARY DOCUMENT View Document
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8-K Aug. 4, 2020 8-K View Document
S-3ASR Aug. 4, 2020 S-3ASR View Document
10-Q Aug. 4, 2020 10-Q View Document
424B5 Aug. 4, 2020 424B5 View Document
8-K Aug. 4, 2020 FORM 8-K View Document
S-3ASR Aug. 4, 2020 UNIVERSAL SHELF REGISTRATION STATEMENT View Document
4 July 2, 2020 PRIMARY DOCUMENT View Document
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11-K June 22, 2020 11-K View Document
8-K June 17, 2020 FORM 8-K View Document
424B2 June 16, 2020 424B2 View Document
FWP June 12, 2020 FWP View Document
424B5 June 12, 2020 424B5 View Document
4 June 2, 2020 PRIMARY DOCUMENT View Document
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10-Q May 5, 2020 10-Q View Document
8-K May 4, 2020 8-K View Document
8-K/A May 1, 2020 8-K View Document
8-K May 1, 2020 8-K View Document
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DEFA14A April 15, 2020 DEFA14A View Document
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8-K March 13, 2020 8-K View Document
DEF 14A March 13, 2020 BHC 2020 PROXY View Document
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8-K Feb. 27, 2020 FORM 8-K (CLOSING OF COMMON STOCK OFFERING) View Document
424B5 Feb. 25, 2020 424B5 View Document
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10-K Feb. 14, 2020 10-K View Document
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SC 13G Feb. 13, 2020 - View Document
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SC 13G/A Feb. 12, 2020 SCHEDULE 13G/A View Document
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8-K Feb. 6, 2020 8-K View Document
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SC 13G/A Feb. 4, 2020 - View Document
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SC 13G Jan. 28, 2020 SEC SCHEDULE 13G View Document
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10-Q Nov. 5, 2019 10-Q View Document
8-K Nov. 4, 2019 8-K View Document
8-K Nov. 4, 2019 8-K View Document
4 Oct. 22, 2019 PRIMARY DOCUMENT View Document
8-K Oct. 4, 2019 FORM 8-K View Document
4 Oct. 4, 2019 PRIMARY DOCUMENT View Document
4 Oct. 4, 2019 PRIMARY DOCUMENT View Document
4 Oct. 4, 2019 PRIMARY DOCUMENT View Document
8-K Oct. 1, 2019 FORM 8-K View Document
424B2 Sept. 30, 2019 FINAL PROSPECTUS SUPPLEMENT DATED SEPTEMBER 26, 2019 View Document
FWP Sept. 26, 2019 PRICING TERM SHEET - 3.050% NOTES DUE 2029 & 3.875% NOTES DUE 2049 View Document
424B5 Sept. 26, 2019 424B5 View Document
4 Sept. 25, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Sept. 4, 2019 PRIMARY DOCUMENT View Document
4 Aug. 20, 2019 PRIMARY DOCUMENT View Document
4 Aug. 8, 2019 PRIMARY DOCUMENT View Document
4 Aug. 8, 2019 PRIMARY DOCUMENT View Document
4 Aug. 8, 2019 PRIMARY DOCUMENT View Document
4 Aug. 8, 2019 PRIMARY DOCUMENT View Document
10-Q Aug. 6, 2019 10-Q View Document
8-K Aug. 5, 2019 8-K View Document
4 July 25, 2019 PRIMARY DOCUMENT View Document
4 July 5, 2019 PRIMARY DOCUMENT View Document
4 July 5, 2019 PRIMARY DOCUMENT View Document
4 July 5, 2019 PRIMARY DOCUMENT View Document
4 June 25, 2019 PRIMARY DOCUMENT View Document
11-K June 21, 2019 11-K View Document
8-K June 18, 2019 8-K View Document
4 June 7, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 June 4, 2019 PRIMARY DOCUMENT View Document
4 May 21, 2019 PRIMARY DOCUMENT View Document
4 May 7, 2019 PRIMARY DOCUMENT View Document
8-K May 3, 2019 8-K ANNUAL MEETING 043019 View Document
4 May 3, 2019 PRIMARY DOCUMENT View Document
10-Q May 3, 2019 10-Q View Document
8-K May 3, 2019 8-K View Document
4 May 3, 2019 PRIMARY DOCUMENT View Document
4 May 3, 2019 PRIMARY DOCUMENT View Document
4 April 24, 2019 PRIMARY DOCUMENT View Document
4 April 5, 2019 PRIMARY DOCUMENT View Document
4 April 5, 2019 PRIMARY DOCUMENT View Document
4 April 5, 2019 PRIMARY DOCUMENT View Document
4 March 20, 2019 PRIMARY DOCUMENT View Document
DEF 14A March 15, 2019 BHC PROXY View Document
SC 13G/A March 11, 2019 - View Document
4 March 11, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
4 March 4, 2019 PRIMARY DOCUMENT View Document
10-K Feb. 19, 2019 10-K View Document
8-K Feb. 15, 2019 EMERY TRADING PLAN View Document
4 Feb. 15, 2019 PRIMARY DOCUMENT View Document
4 Feb. 13, 2019 PRIMARY DOCUMENT View Document
4 Feb. 13, 2019 PRIMARY DOCUMENT View Document
4 Feb. 13, 2019 PRIMARY DOCUMENT View Document
SC 13G Feb. 13, 2019 BLACK HILLS CORPORATION View Document
144 Feb. 13, 2019 EMERY FORM 144 View Document
4 Feb. 13, 2019 PRIMARY DOCUMENT View Document
4 Feb. 13, 2019 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 11, 2019 - View Document
4 Feb. 8, 2019 PRIMARY DOCUMENT View Document
4 Feb. 8, 2019 PRIMARY DOCUMENT View Document
4 Feb. 8, 2019 PRIMARY DOCUMENT View Document
4 Feb. 7, 2019 PRIMARY DOCUMENT View Document
4 Feb. 7, 2019 PRIMARY DOCUMENT View Document
4 Feb. 7, 2019 PRIMARY DOCUMENT View Document
4 Feb. 7, 2019 PRIMARY DOCUMENT View Document
4 Feb. 7, 2019 PRIMARY DOCUMENT View Document
4 Feb. 7, 2019 PRIMARY DOCUMENT View Document
8-K Feb. 7, 2019 8-K View Document
4 Feb. 5, 2019 PRIMARY DOCUMENT View Document
4 Feb. 5, 2019 PRIMARY DOCUMENT View Document
4 Feb. 5, 2019 PRIMARY DOCUMENT View Document
4 Feb. 5, 2019 PRIMARY DOCUMENT View Document
4 Feb. 5, 2019 PRIMARY DOCUMENT View Document
4 Feb. 5, 2019 PRIMARY DOCUMENT View Document
5 Jan. 31, 2019 PRIMARY DOCUMENT View Document
5 Jan. 31, 2019 PRIMARY DOCUMENT View Document
5 Jan. 31, 2019 PRIMARY DOCUMENT View Document
5 Jan. 31, 2019 PRIMARY DOCUMENT View Document
5 Jan. 31, 2019 PRIMARY DOCUMENT View Document
SC 13G/A Jan. 24, 2019 - View Document
4 Jan. 4, 2019 PRIMARY DOCUMENT View Document
4 Jan. 4, 2019 PRIMARY DOCUMENT View Document
4 Jan. 4, 2019 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2018 PRIMARY DOCUMENT View Document
4 Nov. 8, 2018 PRIMARY DOCUMENT View Document
4 Nov. 8, 2018 PRIMARY DOCUMENT View Document
4 Nov. 8, 2018 PRIMARY DOCUMENT View Document
4 Nov. 8, 2018 PRIMARY DOCUMENT View Document
10-Q Nov. 6, 2018 10-Q View Document
8-K Nov. 5, 2018 8-K View Document
25-NSE Nov. 1, 2018 - View Document
8-K Nov. 1, 2018 8-K View Document
4 Oct. 4, 2018 PRIMARY DOCUMENT View Document
4 Oct. 4, 2018 PRIMARY DOCUMENT View Document
4 Oct. 4, 2018 PRIMARY DOCUMENT View Document
4 Oct. 4, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
4 Sept. 5, 2018 PRIMARY DOCUMENT View Document
8-K Aug. 17, 2018 8-K View Document
424B5 Aug. 16, 2018 FINAL PROSPECTUS SUPPLEMENT-4.350% NOTES DUE 2033 View Document
FWP Aug. 15, 2018 FINAL TERM SHEET - 4.350% NOTES DUE 2033 View Document
424B5 Aug. 13, 2018 PRELIMINARY PROSPECTUS SUPPLEMENT-SENIOR NOTES View Document
10-Q Aug. 7, 2018 10-Q View Document
8-K Aug. 7, 2018 8-K View Document
4 Aug. 2, 2018 PRIMARY DOCUMENT View Document
4 Aug. 2, 2018 PRIMARY DOCUMENT View Document
4 Aug. 2, 2018 PRIMARY DOCUMENT View Document
4 Aug. 2, 2018 PRIMARY DOCUMENT View Document
8-K July 31, 2018 8-K View Document
4 July 6, 2018 PRIMARY DOCUMENT View Document
4 July 6, 2018 PRIMARY DOCUMENT View Document
4 July 6, 2018 PRIMARY DOCUMENT View Document
4 July 6, 2018 PRIMARY DOCUMENT View Document
11-K June 26, 2018 11-K View Document
11-K June 26, 2018 11-K View Document
8-K June 21, 2018 MASSMAN RESIGNATION View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
4 June 4, 2018 PRIMARY DOCUMENT View Document
10-Q May 4, 2018 10-Q View Document
8-K May 4, 2018 8-K View Document
4 May 3, 2018 PRIMARY DOCUMENT View Document
4 May 3, 2018 PRIMARY DOCUMENT View Document
4 May 3, 2018 PRIMARY DOCUMENT View Document
4 May 3, 2018 PRIMARY DOCUMENT View Document
4 May 3, 2018 PRIMARY DOCUMENT View Document
8-K April 27, 2018 8K ANNUAL MEETING 2018 View Document
4 April 5, 2018 PRIMARY DOCUMENT View Document
4 April 5, 2018 PRIMARY DOCUMENT View Document
4 April 5, 2018 PRIMARY DOCUMENT View Document
4 April 5, 2018 PRIMARY DOCUMENT View Document
4 April 5, 2018 PRIMARY DOCUMENT View Document
4/A March 15, 2018 PRIMARY DOCUMENT View Document
4/A March 15, 2018 PRIMARY DOCUMENT View Document
4/A March 15, 2018 PRIMARY DOCUMENT View Document
4/A March 15, 2018 PRIMARY DOCUMENT View Document
4/A March 15, 2018 PRIMARY DOCUMENT View Document
DEF 14A March 15, 2018 BHC 2018 PROXY View Document
4/A March 14, 2018 PRIMARY DOCUMENT View Document
5 March 13, 2018 PRIMARY DOCUMENT View Document
4 March 13, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
4 March 2, 2018 PRIMARY DOCUMENT View Document
10-K Feb. 26, 2018 10-K View Document
8-K Feb. 26, 2018 8-K View Document
SC 13G Feb. 14, 2018 BLACK HILLS CORPORATION View Document
4 Feb. 8, 2018 PRIMARY DOCUMENT View Document
4 Feb. 8, 2018 PRIMARY DOCUMENT View Document
4 Feb. 8, 2018 PRIMARY DOCUMENT View Document
4 Feb. 8, 2018 PRIMARY DOCUMENT View Document
4 Feb. 8, 2018 PRIMARY DOCUMENT View Document
4 Feb. 8, 2018 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 8, 2018 - View Document
SC 13G/A Feb. 8, 2018 - View Document
4 Feb. 7, 2018 PRIMARY DOCUMENT View Document
4 Feb. 7, 2018 PRIMARY DOCUMENT View Document
4 Feb. 7, 2018 PRIMARY DOCUMENT View Document
4 Feb. 7, 2018 PRIMARY DOCUMENT View Document
4 Feb. 7, 2018 PRIMARY DOCUMENT View Document
4 Feb. 7, 2018 PRIMARY DOCUMENT View Document
4 Feb. 6, 2018 PRIMARY DOCUMENT View Document
5 Feb. 6, 2018 PRIMARY DOCUMENT View Document
5 Feb. 6, 2018 PRIMARY DOCUMENT View Document
5 Feb. 6, 2018 PRIMARY DOCUMENT View Document
5 Feb. 6, 2018 PRIMARY DOCUMENT View Document
4 Feb. 6, 2018 PRIMARY DOCUMENT View Document
4 Feb. 6, 2018 PRIMARY DOCUMENT View Document
4 Feb. 6, 2018 PRIMARY DOCUMENT View Document
4 Feb. 6, 2018 PRIMARY DOCUMENT View Document
8-K Feb. 5, 2018 BHC 8K AMENDED ARTICLES 013018 View Document
8-K Feb. 2, 2018 8-K View Document
4 Jan. 4, 2018 PRIMARY DOCUMENT View Document
4 Jan. 4, 2018 PRIMARY DOCUMENT View Document
4 Jan. 4, 2018 PRIMARY DOCUMENT View Document
4 Jan. 4, 2018 PRIMARY DOCUMENT View Document
4 Jan. 4, 2018 PRIMARY DOCUMENT View Document
4 Jan. 4, 2018 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
4 Dec. 4, 2017 PRIMARY DOCUMENT View Document
10-Q Nov. 6, 2017 10-Q View Document
8-K Nov. 3, 2017 8-K View Document
4 Nov. 2, 2017 PRIMARY DOCUMENT View Document
4 Nov. 2, 2017 PRIMARY DOCUMENT View Document
4 Nov. 2, 2017 PRIMARY DOCUMENT View Document
4 Nov. 2, 2017 PRIMARY DOCUMENT View Document
4 Nov. 2, 2017 PRIMARY DOCUMENT View Document
4 Nov. 2, 2017 PRIMARY DOCUMENT View Document
4 Oct. 5, 2017 PRIMARY DOCUMENT View Document
4 Oct. 5, 2017 PRIMARY DOCUMENT View Document
4 Oct. 5, 2017 PRIMARY DOCUMENT View Document
4 Oct. 5, 2017 PRIMARY DOCUMENT View Document
4 Oct. 5, 2017 PRIMARY DOCUMENT View Document
4 Oct. 5, 2017 PRIMARY DOCUMENT View Document
SC 13G/A Sept. 8, 2017 - View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
4 Sept. 5, 2017 PRIMARY DOCUMENT View Document
8-K Aug. 4, 2017 FORM 8-K (RENEWAL OF AT-THE-MARKET OFFERING PROGRAM) View Document
424B5 Aug. 4, 2017 PROSPECTUS SUPPLEMENT DATED AUGUST 4, 2017 (ATM EQUITY OFFERING PROGRAM) View Document
S-3ASR Aug. 4, 2017 S-3ASR UNIVERSAL SHELF REGISTRATION STATEMENT View Document
S-3ASR Aug. 4, 2017 S-3ASR View Document
10-Q Aug. 4, 2017 10-Q View Document
4 Aug. 3, 2017 PRIMARY DOCUMENT View Document
4 Aug. 3, 2017 PRIMARY DOCUMENT View Document
8-K Aug. 3, 2017 8-K View Document
4 Aug. 3, 2017 PRIMARY DOCUMENT View Document
4 Aug. 3, 2017 PRIMARY DOCUMENT View Document
4 Aug. 3, 2017 PRIMARY DOCUMENT View Document
4 Aug. 3, 2017 PRIMARY DOCUMENT View Document
4 July 7, 2017 PRIMARY DOCUMENT View Document
4 July 7, 2017 PRIMARY DOCUMENT View Document
4 July 7, 2017 PRIMARY DOCUMENT View Document
4 July 7, 2017 PRIMARY DOCUMENT View Document
4 July 7, 2017 PRIMARY DOCUMENT View Document
4 July 7, 2017 PRIMARY DOCUMENT View Document
11-K June 29, 2017 11-K View Document
11-K June 29, 2017 11-K View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 June 2, 2017 PRIMARY DOCUMENT View Document
4 May 5, 2017 PRIMARY DOCUMENT View Document
4 May 5, 2017 PRIMARY DOCUMENT View Document
4 May 5, 2017 PRIMARY DOCUMENT View Document
4 May 5, 2017 PRIMARY DOCUMENT View Document
S-8 May 5, 2017 BHC SOURCEGAS 401K PLANS 050417 View Document
10-Q May 5, 2017 10-Q View Document
4 May 5, 2017 PRIMARY DOCUMENT View Document
4 May 5, 2017 PRIMARY DOCUMENT View Document
8-K May 4, 2017 8-K View Document
8-K April 28, 2017 8-K View Document
4 April 6, 2017 PRIMARY DOCUMENT View Document
4 April 6, 2017 PRIMARY DOCUMENT View Document
4 April 6, 2017 PRIMARY DOCUMENT View Document
4 April 6, 2017 PRIMARY DOCUMENT View Document
4 April 6, 2017 PRIMARY DOCUMENT View Document
4 April 6, 2017 PRIMARY DOCUMENT View Document
DEF 14A March 16, 2017 BHC 2017 PROXY View Document
4 March 6, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 March 2, 2017 PRIMARY DOCUMENT View Document
4 Feb. 27, 2017 PRIMARY DOCUMENT View Document
4 Feb. 27, 2017 PRIMARY DOCUMENT View Document
10-K Feb. 27, 2017 10-K View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
5 Feb. 14, 2017 PRIMARY DOCUMENT View Document
5 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
5 Feb. 14, 2017 PRIMARY DOCUMENT View Document
4 Feb. 14, 2017 PRIMARY DOCUMENT View Document
SC 13G/A Feb. 10, 2017 - View Document
4 Feb. 10, 2017 PRIMARY DOCUMENT View Document
SC 13G Feb. 9, 2017 BLACK HILLS CORPORATION View Document
4 Feb. 7, 2017 PRIMARY DOCUMENT View Document
4 Feb. 7, 2017 PRIMARY DOCUMENT View Document
4 Feb. 7, 2017 PRIMARY DOCUMENT View Document
4 Feb. 7, 2017 PRIMARY DOCUMENT View Document
3 Feb. 7, 2017 PRIMARY DOCUMENT View Document
4 Feb. 7, 2017 PRIMARY DOCUMENT View Document
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4 Feb. 3, 2017 PRIMARY DOCUMENT View Document
4 Feb. 3, 2017 PRIMARY DOCUMENT View Document
4 Feb. 3, 2017 PRIMARY DOCUMENT View Document
4 Feb. 3, 2017 PRIMARY DOCUMENT View Document
4 Feb. 3, 2017 PRIMARY DOCUMENT View Document
4 Feb. 3, 2017 PRIMARY DOCUMENT View Document
8-K Feb. 2, 2017 8-K View Document
8-K Jan. 31, 2017 OFFICER CHANGE 013017 8-K View Document
SC 13G/A Jan. 12, 2017 - View Document
4 Jan. 6, 2017 PRIMARY DOCUMENT View Document
4 Jan. 6, 2017 PRIMARY DOCUMENT View Document
3 Jan. 6, 2017 PRIMARY DOCUMENT View Document
4 Jan. 6, 2017 PRIMARY DOCUMENT View Document
4 Jan. 6, 2017 PRIMARY DOCUMENT View Document
4 Jan. 6, 2017 PRIMARY DOCUMENT View Document
4 Jan. 6, 2017 PRIMARY DOCUMENT View Document
8-K Dec. 21, 2016 8-K PECHOTA 121516 View Document
8-K Dec. 15, 2016 121416 NEW DIRECTOR View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
4 Dec. 2, 2016 PRIMARY DOCUMENT View Document
8-K Nov. 16, 2016 8-K CIC AGREEMENT 111516 View Document
4 Nov. 4, 2016 PRIMARY DOCUMENT View Document
4 Nov. 4, 2016 PRIMARY DOCUMENT View Document
4 Nov. 4, 2016 PRIMARY DOCUMENT View Document
10-Q Nov. 4, 2016 10-Q View Document
4 Nov. 4, 2016 PRIMARY DOCUMENT View Document
4 Nov. 4, 2016 PRIMARY DOCUMENT View Document
8-K Nov. 3, 2016 8-K View Document
UPLOAD Oct. 14, 2016 - View Document
4 Oct. 7, 2016 PRIMARY DOCUMENT View Document
4 Oct. 7, 2016 PRIMARY DOCUMENT View Document
4 Oct. 7, 2016 PRIMARY DOCUMENT View Document
4 Oct. 7, 2016 PRIMARY DOCUMENT View Document
CORRESP Oct. 7, 2016 - View Document
4 Oct. 7, 2016 PRIMARY DOCUMENT View Document
UPLOAD Sept. 23, 2016 - View Document
3 Sept. 7, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
4 Sept. 2, 2016 PRIMARY DOCUMENT View Document
8-K Aug. 19, 2016 8-K View Document
8-K Aug. 16, 2016 8-K View Document
424B2 Aug. 11, 2016 FINAL PROSPECTUS SUPPLEMENT DATED AUGUST 10, 2016 (SENIOR UNSECURED NOTES) View Document
FWP Aug. 10, 2016 FWP View Document
424B5 Aug. 10, 2016 PRELIMINARY PROSPECTUS SUPPLEMENT DATED AUGUST 10, 2016 (SENIOR UNSECURED NOTES) View Document
8-K Aug. 10, 2016 8-K View Document
10-Q Aug. 5, 2016 10-Q View Document
8-K Aug. 4, 2016 8-K View Document
4 Aug. 4, 2016 PRIMARY DOCUMENT View Document
4 Aug. 4, 2016 PRIMARY DOCUMENT View Document
4 Aug. 4, 2016 PRIMARY DOCUMENT View Document
4 Aug. 4, 2016 PRIMARY DOCUMENT View Document
8-K Aug. 3, 2016 8-K View Document
4 July 8, 2016 PRIMARY DOCUMENT View Document
4 July 8, 2016 PRIMARY DOCUMENT View Document
4 July 8, 2016 PRIMARY DOCUMENT View Document
4 July 8, 2016 PRIMARY DOCUMENT View Document
11-K June 28, 2016 11-K View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 June 2, 2016 PRIMARY DOCUMENT View Document
4 May 12, 2016 PRIMARY DOCUMENT View Document
10-Q May 10, 2016 10-Q View Document
4 May 5, 2016 PRIMARY DOCUMENT View Document
4 May 5, 2016 PRIMARY DOCUMENT View Document
4 May 5, 2016 PRIMARY DOCUMENT View Document
4 May 5, 2016 PRIMARY DOCUMENT View Document
8-K May 4, 2016 8-K View Document
8-K April 28, 2016 8-K 042616 ANNUAL MEETING View Document
8-K April 26, 2016 OFFICER CHANGE APRIL 25 2016 View Document
8-K April 14, 2016 FORM 8K COIPP CLOSING 04142016 View Document
8-K April 8, 2016 4-8-16 ANALYST MEETINGS View Document
4 April 7, 2016 PRIMARY DOCUMENT View Document
4 April 7, 2016 PRIMARY DOCUMENT View Document
4 April 7, 2016 PRIMARY DOCUMENT View Document
4 April 7, 2016 PRIMARY DOCUMENT View Document
424B5 March 18, 2016 PROSPECTUS SUPPLEMENT-ATM EQUITY PROGRAM View Document
8-K March 18, 2016 8-K View Document
8-K/A March 18, 2016 8-K/A View Document
8-K March 18, 2016 8-K View Document
DEF 14A March 17, 2016 BHC 2016 PROXY View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
PRE 14A March 2, 2016 PRE 14A View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 2, 2016 PRIMARY DOCUMENT View Document
4 March 1, 2016 PRIMARY DOCUMENT View Document
4 March 1, 2016 PRIMARY DOCUMENT View Document
8-K Feb. 29, 2016 8-K ANALYSTS MEETINGS View Document
10-K Feb. 25, 2016 10-K View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
SC 13G Feb. 12, 2016 BLACK HILLS CORPORATION View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
4 Feb. 12, 2016 PRIMARY DOCUMENT View Document
8-K Feb. 12, 2016 8-K View Document
SC 13G/A Feb. 10, 2016 - View Document
SC 13G Feb. 10, 2016 BLACKHILLS CORPORATION View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document
4 Feb. 8, 2016 PRIMARY DOCUMENT View Document