401k plan information for BLACK HILLS CORPORATION

401k Sponsoring company profile

BLACK HILLS CORPORATION has sponsored the creation of one or more 401k plans.

Company Name: BLACK HILLS CORPORATION

Employer identification number (EIN): 460458824

NAIC Classification: 221500

The following addresses have been detected on the 401k submissions:

USA Mailing Address

625 NINTH STREET

RAPID CITY

57701

Date first seen: 2007-01-01

Date last seen: 2025-07-31

USA Mailing Address

PO BOX 1400

RAPID CITY

577091400

Date first seen: 2010-07-26

Date last seen: 2025-09-16

USA Mailing Address

P.O. BOX 1400

RAPID CITY

57709

Date first seen: 2007-01-01

Date last seen: 2025-11-23

USA Location Address

PO BOX 1400

RAPID CITY

57701

Date first seen: 2007-01-01

Date last seen: 2025-07-31

USA Mailing Address

PO BOX 1400

RAPID CITY

57709

Date first seen: 2007-01-01

Date last seen: 2025-11-20

BLACK HILLS CORPORATION 401k Plans

Plan id#	Plan Name	Plan Start Date	Plan Effective Date
508	BLACK HILLS CORPORATION RETIREE HEALTHCARE PLAN	2014-01-01	2001-01-01
502	BLACK HILLS CORPORATION EMPLOYEE HEALTHCARE PLAN	2015-01-01	1943-09-01
003	BLACK HILLS CORPORATION RETIREMENT SAVINGS PLAN	2012-01-01	1982-07-01
509	BLACK HILLS UTILITY HOLDINGS INC FUNDED RETIREE HEALTHCARE AND LIFE INSURANCE PLAN	2015-01-01	2008-07-14
501	GROUP INSURANCE PLAN FOR THE EMPLOYEES OF BLACK HILLS CORPORATION	2015-01-01	1943-09-01
503	BLACK HILLS CORPORATION EMPLOYEE FLEXIBLE BENEFITS	2015-01-01	1983-07-01
008	BLACK HILLS CORPORATION MASTER RETIREMENT TRUST	2015-01-01	2021-01-01
009	SOURCEGAS RETIREMENT PLAN	2015-01-01	2007-04-01
006	BLACK HILLS UTILITY HOLDINGS INC PENSION PLAN	2015-01-01	2008-07-14
005	CHEYENNE LIGHT FUEL AND POWER COMPANY PENSION PLAN	2009-10-01	2005-01-22
504	BLACK HILLS UTILITY HOLDINGS INC EMPLOYEES FLEXIBLE BENEFITS PLAN	2009-01-01	2008-01-01
007	BLACK HILLS UTILITY HOLDINGS, INC RETIREMENT SAVINGS PLAN	2009-01-01	2008-07-14
518	SOURCEGAS EMPLOYEE BENEFITS PLAN	2016-01-01	2007-04-01
001	PENSION PLAN OF BLACK HILL CORPORATION	2015-01-01	1941-08-27
519	SOURCEGAS POST-RETIREMENT EMPLOYEE BENEFITS PLAN FOR FORMER EMPLOYEES OF ARKANSAS WESTERN GAS COMPANY	2016-01-01	2011-01-01
010	SOURCEGAS RETIREMENT SAVINGS PLAN	2015-01-01	2007-04-16
516	GROUP INSURANCE PLAN FOR THE EMPLOYEES AND RETIREES OF CHEYENNE LIGHT FUEL & POWER COMPANY	2010-01-01	2005-01-22
517	CHEYENNE LIGHT FUEL & POWER COMPANY EMPLOYEE ASSISTANCE PROGRAM	2009-01-01	2005-01-22
004	CHEYENNE LIGHT, FUEL & POWER COMPANY RETIREMENT SAVINGS PLAN	2009-01-01	2005-01-22

401k Contributions

Contributions made to the plan for the plan year by employer(s) and employees. Schedule SB Part 4 Question 18. This is signed by an actuary:

Date Type of contribution Contribution Number of participants/employees Average contribution per participant
2020-06-30 Employer Contributions $ 12,700,000 2999 $ 4,235
2020-06-30 Employee Contributions $ 12,700,000 2999 $ 4,235
2018-07-25 Employer Contributions $ 12,700,000
2018-07-25 Employee Contributions $ 12,700,000
2017-09-14 Employer Contributions $ 2,046,000 1983 $ 1,032
2017-09-14 Employee Contributions $ 2,046,000 1983 $ 1,032
2017-07-24 Employer Contributions $ 1,734,000 1983 $ 874
2017-07-24 Employee Contributions $ 1,734,000 1983 $ 874
2016-09-06 Employer Contributions $ 4,000,000 1 $ 4,000,000
2016-09-06 Employee Contributions $ 4,000,000 1 $ 4,000,000
2016-06-28 Employer Contributions $ 1,700,000 1 $ 1,700,000
2016-06-28 Employee Contributions $ 1,700,000 1 $ 1,700,000
2016-01-15 Employer Contributions $ 975,000 1 $ 975,000
2016-01-15 Employee Contributions $ 975,000 1 $ 975,000
2015-10-16 Employer Contributions $ 975,000 1860 $ 524
2015-10-16 Employee Contributions $ 975,000 1860 $ 524
2015-07-29 Employer Contributions $ 10,200,000 1860 $ 5,484
2015-07-29 Employee Contributions $ 10,200,000 1860 $ 5,484
2015-07-16 Employer Contributions $ 975,000 1860 $ 524
2015-07-16 Employee Contributions $ 975,000 1860 $ 524
2015-04-15 Employer Contributions $ 975,000 1860 $ 524
2015-04-15 Employee Contributions $ 975,000 1860 $ 524
2015-01-15 Employer Contributions $ 975,000 1860 $ 524
2015-01-15 Employee Contributions $ 975,000 1860 $ 524
2014-09-15 Employer Contributions $ 6,800,000 1 $ 6,800,000
2014-09-15 Employee Contributions $ 6,800,000 1 $ 6,800,000
2013-07-25 Employer Contributions $ 4,500,000 297 $ 15,152
2013-07-25 Employee Contributions $ 4,500,000 297 $ 15,152
2012-10-15 Employer Contributions $ 350,000 1906 $ 184
2012-10-15 Employee Contributions $ 350,000 1906 $ 184
2012-03-30 Employer Contributions $ 12,000,000 1906 $ 6,296
2012-03-30 Employee Contributions $ 12,000,000 1906 $ 6,296
2012-03-28 Employer Contributions $ 12,000,000 1906 $ 6,296
2012-03-28 Employee Contributions $ 12,000,000 1906 $ 6,296
2011-09-06 Employer Contributions $ 10,500,000 2014 $ 5,214
2011-09-06 Employee Contributions $ 10,500,000 2014 $ 5,214
2011-04-06 Employer Contributions $ 550,205 2014 $ 273
2011-04-06 Employee Contributions $ 550,205 2014 $ 273
2010-09-14 Employer Contributions $ 20,000,000 1920 $ 10,417
2010-09-14 Employee Contributions $ 20,000,000 1920 $ 10,417
2010-09-13 Employer Contributions $ 10,000,000 1920 $ 5,208
2010-09-13 Employee Contributions $ 10,000,000 1920 $ 5,208
2009-07-14 Employer Contributions $ 2,500,000 82 $ 30,488
2009-07-14 Employee Contributions $ 2,500,000 82 $ 30,488
2009-04-14 Employer Contributions $ 2,500,000 82 $ 30,488
2009-04-14 Employee Contributions $ 2,500,000 82 $ 30,488

Date	Type of contribution	Contribution	Number of participants/employees	Average contribution per participant
2020-06-30	Employer Contributions	$ 12,700,000	2999	$ 4,235
2020-06-30	Employee Contributions	$ 12,700,000	2999	$ 4,235
2018-07-25	Employer Contributions	$ 12,700,000
2018-07-25	Employee Contributions	$ 12,700,000
2017-09-14	Employer Contributions	$ 2,046,000	1983	$ 1,032
2017-09-14	Employee Contributions	$ 2,046,000	1983	$ 1,032
2017-07-24	Employer Contributions	$ 1,734,000	1983	$ 874
2017-07-24	Employee Contributions	$ 1,734,000	1983	$ 874
2016-09-06	Employer Contributions	$ 4,000,000	1	$ 4,000,000
2016-09-06	Employee Contributions	$ 4,000,000	1	$ 4,000,000
2016-06-28	Employer Contributions	$ 1,700,000	1	$ 1,700,000
2016-06-28	Employee Contributions	$ 1,700,000	1	$ 1,700,000
2016-01-15	Employer Contributions	$ 975,000	1	$ 975,000
2016-01-15	Employee Contributions	$ 975,000	1	$ 975,000
2015-10-16	Employer Contributions	$ 975,000	1860	$ 524
2015-10-16	Employee Contributions	$ 975,000	1860	$ 524
2015-07-29	Employer Contributions	$ 10,200,000	1860	$ 5,484
2015-07-29	Employee Contributions	$ 10,200,000	1860	$ 5,484
2015-07-16	Employer Contributions	$ 975,000	1860	$ 524
2015-07-16	Employee Contributions	$ 975,000	1860	$ 524
2015-04-15	Employer Contributions	$ 975,000	1860	$ 524
2015-04-15	Employee Contributions	$ 975,000	1860	$ 524
2015-01-15	Employer Contributions	$ 975,000	1860	$ 524
2015-01-15	Employee Contributions	$ 975,000	1860	$ 524
2014-09-15	Employer Contributions	$ 6,800,000	1	$ 6,800,000
2014-09-15	Employee Contributions	$ 6,800,000	1	$ 6,800,000
2013-07-25	Employer Contributions	$ 4,500,000	297	$ 15,152
2013-07-25	Employee Contributions	$ 4,500,000	297	$ 15,152
2012-10-15	Employer Contributions	$ 350,000	1906	$ 184
2012-10-15	Employee Contributions	$ 350,000	1906	$ 184
2012-03-30	Employer Contributions	$ 12,000,000	1906	$ 6,296
2012-03-30	Employee Contributions	$ 12,000,000	1906	$ 6,296
2012-03-28	Employer Contributions	$ 12,000,000	1906	$ 6,296
2012-03-28	Employee Contributions	$ 12,000,000	1906	$ 6,296
2011-09-06	Employer Contributions	$ 10,500,000	2014	$ 5,214
2011-09-06	Employee Contributions	$ 10,500,000	2014	$ 5,214
2011-04-06	Employer Contributions	$ 550,205	2014	$ 273
2011-04-06	Employee Contributions	$ 550,205	2014	$ 273
2010-09-14	Employer Contributions	$ 20,000,000	1920	$ 10,417
2010-09-14	Employee Contributions	$ 20,000,000	1920	$ 10,417
2010-09-13	Employer Contributions	$ 10,000,000	1920	$ 5,208
2010-09-13	Employee Contributions	$ 10,000,000	1920	$ 5,208
2009-07-14	Employer Contributions	$ 2,500,000	82	$ 30,488
2009-07-14	Employee Contributions	$ 2,500,000	82	$ 30,488
2009-04-14	Employer Contributions	$ 2,500,000	82	$ 30,488
2009-04-14	Employee Contributions	$ 2,500,000	82	$ 30,488

Potentially Related 401k Schemes

BLACK HILLS CORPORATION [EIN = 367608699]

Potentially Related Companies

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Company Name:	BLACK HILLS CORPORATION
Employer identification number (EIN):	460458824
NAIC Classification:	221500