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401k Sponsoring company profile

ALLIANT ENERGY CORPORATE SERVICES, INC. has sponsored the creation of one or more 401k plans.

Company Name:ALLIANT ENERGY CORPORATE SERVICES, INC.
Employer identification number (EIN):391914946
NAIC Classification:221100

Additional information about ALLIANT ENERGY CORPORATE SERVICES, INC.

Jurisdiction of Incorporation:
Incorporation Date:
Company Identification Number:

More information about ALLIANT ENERGY CORPORATE SERVICES, INC.

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

USA Mailing Address
4902 N. BILTMORE LANE
SUITE 1000
MADISON
WI
537182148
Date first seen: 2010-10-05
Date last seen: 2018-10-10

The following addresses have been found in other jurisdictions:

Jurisdiction:Washington Secretary of State Corporations Division
Address:
WEST 505 RIVERSIDE AVE #500
SPOKANE
Jurisdiction Company ID:602364995
Jurisdiction Registration Date:2003-12-23
Jurisdiction:Washington Department of State
Address:
CORPORATE CREATIONS NETWORK INC.
SPOKANE
WA
Jurisdiction Company ID:602364995
Jurisdiction Registration Date:2003-12-23
Jurisdiction:
Address:
200 1ST ST SE
CEDAR RAPIDS
IA
Jurisdiction Company ID:
Jurisdiction Registration Date:

Sponsoring Company Events

DateDescription
2021-10-13391914946 Change of name detected from ALLIANT ENERGY CORPORATE SERV. INC. to ALLIANT ENERGY CORPORATE SERVICES, INC.
2021-10-11391914946 Change of name detected from ALLIANT ENERGY CORPORATE SERVICES, INC. to ALLIANT ENERGY CORPORATE SERVICES
2021-10-11391914946 Change of name detected from ALLIANT ENERGY CORPORATE SERVICES to ALLIANT ENERGY CORPORATE SERV.INC.
2021-10-11391914946 Change of name detected from ALLIANT ENERGY CORPORATE SERV.INC. to ALLIANT ENERGY CORPORATE SERVICES
2021-10-11391914946 Change of name detected from ALLIANT ENERGY CORPORATE SERVICES to ALLIANT ENERGY CORPORATE SERV. INC.
2021-10-09391914946 Change of name detected from ALLIANT ENERGY CORPORATE SERV.INC. to ALLIANT ENERGY CORPORATE SERVICES, INC.

ALLIANT ENERGY CORPORATE SERVICES, INC. 401k Plans

Plan id# Plan Name Plan Start Date Plan Effective Date
501ALLIANT ENERGY HEALTH & WELFARE BENEFIT PLAN2014-01-01 2005-01-01
001ALLIANT ENERGY CASH BALANCE PENSION PLAN2015-01-01 1940-04-01
100ALLIANT ENERGY CORPORATION MASTER RETIREMENT TRUST2015-01-01 2021-01-01
502ALLIANT ENERGY RETIREE HEALTH & WELFARE BENEFIT PLAN2015-01-01 2011-01-01
005ALLIANT ENERGY CORPORATION 401(K) SAVINGS PLAN2015-01-01 1983-01-01
008IES EMPLOYEE STOCK OWNERSHIP PLAN2011-01-01 1975-12-31

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:

DateType of contributionContribution Number of participants/employees Average contribution per participant
2020-07-17Employer Contributions $ 2,073,000 3361 $ 617
2020-07-17Employee Contributions $ 2,073,000 3361 $ 617
2020-01-15Employer Contributions $ 1,670,975 3361 $ 497
2020-01-15Employee Contributions $ 1,670,975 3361 $ 497
2019-10-15Employer Contributions $ 455,541 3554 $ 128
2019-10-15Employee Contributions $ 455,541 3554 $ 128
2014-11-24Employer Contributions $ 1,400,000 3632 $ 385
2014-11-24Employee Contributions $ 1,400,000 3632 $ 385
2014-10-30Employer Contributions $ 34,572 3632 $ 10
2014-10-30Employee Contributions $ 34,572 3632 $ 10
2011-12-29Employer Contributions $ 10,000,000 1106 $ 9,042
2011-12-29Employee Contributions $ 10,000,000 1106 $ 9,042
2011-12-01Employer Contributions $ 1,325,000 1106 $ 1,198
2011-12-01Employee Contributions $ 1,325,000 1106 $ 1,198
2011-08-01Employer Contributions $ 8,900,000 1106 $ 8,047
2011-08-01Employee Contributions $ 8,900,000 1106 $ 8,047
2009-12-22Employer Contributions $ 20,000,000 4296 $ 4,655
2009-12-22Employee Contributions $ 20,000,000 4296 $ 4,655
2009-04-01Employer Contributions $ 1,079,450 4296 $ 251
2009-04-01Employee Contributions $ 1,079,450 4296 $ 251

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