401k plan information for KOPPERS INC.

401k Sponsoring company profile

KOPPERS INC. has sponsored the creation of one or more 401k plans.

Company Name: KOPPERS INC.

Employer identification number (EIN): 251588399

NAIC Classification: 324190

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

USA Mailing Address

436 7TH AVENUE, SUITE 1500

PITTSBURGH

152191826

Date first seen: 2010-10-14

Date last seen: 2025-11-19

USA Mailing Address

436 SEVENTH AVENUE

SUITE 1500

PITTSBURGH

152191818

Date first seen: 2010-10-20

Date last seen: 2025-11-22

USA Mailing Address

436 SEVENTH AVENUE STE 1500

PITTSBURGH

15219

Date first seen: 2007-01-01

Date last seen: 2025-11-21

USA Mailing Address

436 SEVENTH AVENUE STE. 1500

PITTSBURGH

152191826

Date first seen: 2025-07-30

Date last seen: 2025-11-21

KOPPERS INC. 401k Plans

Plan id#	Plan Name	Plan Start Date	Plan Effective Date
517	KOPPERS INC. LTD PLAN FOR SALARIED EMPLOYEES	2015-01-01	1989-01-01
003	RETIREMENT PLAN FOR KOPPERS INC.	2015-01-01	1989-01-01
001	EMPLOYEE SAVINGS PLAN OF KOPPERS INC. AND SUBSIDIARIES	2009-01-01	1989-01-01
004	KOPPERS INC. SAVINGS PLAN FOR UNION HOURLY EMPLOYEES	2016-01-01	1995-11-01

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
2023-09-08 Employer Contributions $ 670,000 2179 $ 307
2023-09-08 Employee Contributions $ 670,000 2179 $ 307
2020-12-17 Employer Contributions $ 3,022,000 1897 $ 1,593
2020-12-17 Employee Contributions $ 3,022,000 1897 $ 1,593
2017-09-14 Employer Contributions $ 7,000,000 856 $ 8,178
2017-09-14 Employee Contributions $ 7,000,000 856 $ 8,178
2014-07-15 Employer Contributions $ 2,500,000 655 $ 3,817
2014-07-15 Employee Contributions $ 2,500,000 655 $ 3,817
2014-06-16 Employer Contributions $ 2,000,000 655 $ 3,053
2014-06-16 Employee Contributions $ 2,000,000 655 $ 3,053
2014-05-15 Employer Contributions $ 2,000,000 655 $ 3,053
2014-05-15 Employee Contributions $ 2,000,000 655 $ 3,053
2014-04-15 Employer Contributions $ 2,000,000 655 $ 3,053
2014-04-15 Employee Contributions $ 2,000,000 655 $ 3,053
2014-03-14 Employer Contributions $ 2,000,000 655 $ 3,053
2014-03-14 Employee Contributions $ 2,000,000 655 $ 3,053
2014-02-01 Employer Contributions $ 2,000,000 655 $ 3,053
2014-02-01 Employee Contributions $ 2,000,000 655 $ 3,053
2013-10-15 Employer Contributions $ 2,000,000 727 $ 2,751
2013-10-15 Employee Contributions $ 2,000,000 727 $ 2,751
2013-09-13 Employer Contributions $ 2,000,000 727 $ 2,751
2013-09-13 Employee Contributions $ 2,000,000 727 $ 2,751
2013-08-15 Employer Contributions $ 2,000,000 727 $ 2,751
2013-08-15 Employee Contributions $ 2,000,000 727 $ 2,751
2013-07-15 Employer Contributions $ 1,800,000 727 $ 2,476
2013-07-15 Employee Contributions $ 1,800,000 727 $ 2,476
2013-06-17 Employer Contributions $ 2,000,000 727 $ 2,751
2013-06-17 Employee Contributions $ 2,000,000 727 $ 2,751
2013-05-15 Employer Contributions $ 2,000,000 727 $ 2,751
2013-05-15 Employee Contributions $ 2,000,000 727 $ 2,751
2013-04-15 Employer Contributions $ 1,800,000 727 $ 2,476
2013-04-15 Employee Contributions $ 1,800,000 727 $ 2,476
2013-03-15 Employer Contributions $ 2,500,000 727 $ 3,439
2013-03-15 Employee Contributions $ 2,500,000 727 $ 3,439
2013-01-30 Employer Contributions $ 3,500,000 727 $ 4,814
2013-01-30 Employee Contributions $ 3,500,000 727 $ 4,814
2012-12-14 Employer Contributions $ 2,000,000 1021 $ 1,959
2012-12-14 Employee Contributions $ 2,000,000 1021 $ 1,959
2012-11-15 Employer Contributions $ 2,000,000 1021 $ 1,959
2012-11-15 Employee Contributions $ 2,000,000 1021 $ 1,959
2012-10-15 Employer Contributions $ 2,000,000 1021 $ 1,959
2012-10-15 Employee Contributions $ 2,000,000 1021 $ 1,959
2012-09-14 Employer Contributions $ 1,133,333 1021 $ 1,110
2012-09-14 Employee Contributions $ 1,133,333 1021 $ 1,110
2012-08-15 Employer Contributions $ 1,133,333 1021 $ 1,110
2012-08-15 Employee Contributions $ 1,133,333 1021 $ 1,110
2012-07-13 Employer Contributions $ 1,133,333 1021 $ 1,110
2012-07-13 Employee Contributions $ 1,133,333 1021 $ 1,110
2012-06-15 Employer Contributions $ 1,133,333 1021 $ 1,110
2012-06-15 Employee Contributions $ 1,133,333 1021 $ 1,110
2012-05-15 Employer Contributions $ 1,633,333 1021 $ 1,600
2012-05-15 Employee Contributions $ 1,633,333 1021 $ 1,600
2012-04-13 Employer Contributions $ 1,900,000 1021 $ 1,861
2012-04-13 Employee Contributions $ 1,900,000 1021 $ 1,861
2011-12-15 Employer Contributions $ 847,208 893 $ 949
2011-12-15 Employee Contributions $ 847,208 893 $ 949
2011-11-15 Employer Contributions $ 847,208 893 $ 949
2011-11-15 Employee Contributions $ 847,208 893 $ 949
2011-10-14 Employer Contributions $ 847,208 893 $ 949
2011-10-14 Employee Contributions $ 847,208 893 $ 949
2011-09-16 Employer Contributions $ 847,208 893 $ 949
2011-09-16 Employee Contributions $ 847,208 893 $ 949
2011-09-15 Employer Contributions $ 1,022,684 893 $ 1,145
2011-09-15 Employee Contributions $ 1,022,684 893 $ 1,145
2011-08-30 Employer Contributions $ 1,022,684 893 $ 1,145
2011-08-30 Employee Contributions $ 1,022,684 893 $ 1,145
2011-08-15 Employer Contributions $ 847,208 893 $ 949
2011-08-15 Employee Contributions $ 847,208 893 $ 949
2011-07-30 Employer Contributions $ 1,022,685 893 $ 1,145
2011-07-30 Employee Contributions $ 1,022,685 893 $ 1,145
2011-07-15 Employer Contributions $ 2,118,020 893 $ 2,372
2011-07-15 Employee Contributions $ 2,118,020 893 $ 2,372
2011-06-30 Employer Contributions $ 1,022,685 893 $ 1,145
2011-06-30 Employee Contributions $ 1,022,685 893 $ 1,145
2011-04-15 Employer Contributions $ 2,118,020 893 $ 2,372
2011-04-15 Employee Contributions $ 2,118,020 893 $ 2,372
2011-03-31 Employer Contributions $ 53,000 893 $ 59
2011-03-31 Employee Contributions $ 53,000 893 $ 59
2011-01-14 Employer Contributions $ 1,254,269 893 $ 1,405
2011-01-14 Employee Contributions $ 1,254,269 893 $ 1,405
2010-10-15 Employer Contributions $ 1,254,269 945 $ 1,327
2010-10-15 Employee Contributions $ 1,254,269 945 $ 1,327
2010-09-15 Employer Contributions $ 488,553 945 $ 517
2010-09-15 Employee Contributions $ 488,553 945 $ 517
2010-07-15 Employer Contributions $ 1,254,269 945 $ 1,327
2010-07-15 Employee Contributions $ 1,254,269 945 $ 1,327
2010-04-15 Employer Contributions $ 1,254,269 945 $ 1,327
2010-04-15 Employee Contributions $ 1,254,269 945 $ 1,327
2010-03-31 Employer Contributions $ 56,000 945 $ 59
2010-03-31 Employee Contributions $ 56,000 945 $ 59
2010-01-01 Employer Contributions $ 134,000 945 $ 142
2010-01-01 Employee Contributions $ 134,000 945 $ 142

Date	Type of contribution	Contribution	Number of participants/employees	Average contribution per participant
2023-09-08	Employer Contributions	$ 670,000	2179	$ 307
2023-09-08	Employee Contributions	$ 670,000	2179	$ 307
2020-12-17	Employer Contributions	$ 3,022,000	1897	$ 1,593
2020-12-17	Employee Contributions	$ 3,022,000	1897	$ 1,593
2017-09-14	Employer Contributions	$ 7,000,000	856	$ 8,178
2017-09-14	Employee Contributions	$ 7,000,000	856	$ 8,178
2014-07-15	Employer Contributions	$ 2,500,000	655	$ 3,817
2014-07-15	Employee Contributions	$ 2,500,000	655	$ 3,817
2014-06-16	Employer Contributions	$ 2,000,000	655	$ 3,053
2014-06-16	Employee Contributions	$ 2,000,000	655	$ 3,053
2014-05-15	Employer Contributions	$ 2,000,000	655	$ 3,053
2014-05-15	Employee Contributions	$ 2,000,000	655	$ 3,053
2014-04-15	Employer Contributions	$ 2,000,000	655	$ 3,053
2014-04-15	Employee Contributions	$ 2,000,000	655	$ 3,053
2014-03-14	Employer Contributions	$ 2,000,000	655	$ 3,053
2014-03-14	Employee Contributions	$ 2,000,000	655	$ 3,053
2014-02-01	Employer Contributions	$ 2,000,000	655	$ 3,053
2014-02-01	Employee Contributions	$ 2,000,000	655	$ 3,053
2013-10-15	Employer Contributions	$ 2,000,000	727	$ 2,751
2013-10-15	Employee Contributions	$ 2,000,000	727	$ 2,751
2013-09-13	Employer Contributions	$ 2,000,000	727	$ 2,751
2013-09-13	Employee Contributions	$ 2,000,000	727	$ 2,751
2013-08-15	Employer Contributions	$ 2,000,000	727	$ 2,751
2013-08-15	Employee Contributions	$ 2,000,000	727	$ 2,751
2013-07-15	Employer Contributions	$ 1,800,000	727	$ 2,476
2013-07-15	Employee Contributions	$ 1,800,000	727	$ 2,476
2013-06-17	Employer Contributions	$ 2,000,000	727	$ 2,751
2013-06-17	Employee Contributions	$ 2,000,000	727	$ 2,751
2013-05-15	Employer Contributions	$ 2,000,000	727	$ 2,751
2013-05-15	Employee Contributions	$ 2,000,000	727	$ 2,751
2013-04-15	Employer Contributions	$ 1,800,000	727	$ 2,476
2013-04-15	Employee Contributions	$ 1,800,000	727	$ 2,476
2013-03-15	Employer Contributions	$ 2,500,000	727	$ 3,439
2013-03-15	Employee Contributions	$ 2,500,000	727	$ 3,439
2013-01-30	Employer Contributions	$ 3,500,000	727	$ 4,814
2013-01-30	Employee Contributions	$ 3,500,000	727	$ 4,814
2012-12-14	Employer Contributions	$ 2,000,000	1021	$ 1,959
2012-12-14	Employee Contributions	$ 2,000,000	1021	$ 1,959
2012-11-15	Employer Contributions	$ 2,000,000	1021	$ 1,959
2012-11-15	Employee Contributions	$ 2,000,000	1021	$ 1,959
2012-10-15	Employer Contributions	$ 2,000,000	1021	$ 1,959
2012-10-15	Employee Contributions	$ 2,000,000	1021	$ 1,959
2012-09-14	Employer Contributions	$ 1,133,333	1021	$ 1,110
2012-09-14	Employee Contributions	$ 1,133,333	1021	$ 1,110
2012-08-15	Employer Contributions	$ 1,133,333	1021	$ 1,110
2012-08-15	Employee Contributions	$ 1,133,333	1021	$ 1,110
2012-07-13	Employer Contributions	$ 1,133,333	1021	$ 1,110
2012-07-13	Employee Contributions	$ 1,133,333	1021	$ 1,110
2012-06-15	Employer Contributions	$ 1,133,333	1021	$ 1,110
2012-06-15	Employee Contributions	$ 1,133,333	1021	$ 1,110
2012-05-15	Employer Contributions	$ 1,633,333	1021	$ 1,600
2012-05-15	Employee Contributions	$ 1,633,333	1021	$ 1,600
2012-04-13	Employer Contributions	$ 1,900,000	1021	$ 1,861
2012-04-13	Employee Contributions	$ 1,900,000	1021	$ 1,861
2011-12-15	Employer Contributions	$ 847,208	893	$ 949
2011-12-15	Employee Contributions	$ 847,208	893	$ 949
2011-11-15	Employer Contributions	$ 847,208	893	$ 949
2011-11-15	Employee Contributions	$ 847,208	893	$ 949
2011-10-14	Employer Contributions	$ 847,208	893	$ 949
2011-10-14	Employee Contributions	$ 847,208	893	$ 949
2011-09-16	Employer Contributions	$ 847,208	893	$ 949
2011-09-16	Employee Contributions	$ 847,208	893	$ 949
2011-09-15	Employer Contributions	$ 1,022,684	893	$ 1,145
2011-09-15	Employee Contributions	$ 1,022,684	893	$ 1,145
2011-08-30	Employer Contributions	$ 1,022,684	893	$ 1,145
2011-08-30	Employee Contributions	$ 1,022,684	893	$ 1,145
2011-08-15	Employer Contributions	$ 847,208	893	$ 949
2011-08-15	Employee Contributions	$ 847,208	893	$ 949
2011-07-30	Employer Contributions	$ 1,022,685	893	$ 1,145
2011-07-30	Employee Contributions	$ 1,022,685	893	$ 1,145
2011-07-15	Employer Contributions	$ 2,118,020	893	$ 2,372
2011-07-15	Employee Contributions	$ 2,118,020	893	$ 2,372
2011-06-30	Employer Contributions	$ 1,022,685	893	$ 1,145
2011-06-30	Employee Contributions	$ 1,022,685	893	$ 1,145
2011-04-15	Employer Contributions	$ 2,118,020	893	$ 2,372
2011-04-15	Employee Contributions	$ 2,118,020	893	$ 2,372
2011-03-31	Employer Contributions	$ 53,000	893	$ 59
2011-03-31	Employee Contributions	$ 53,000	893	$ 59
2011-01-14	Employer Contributions	$ 1,254,269	893	$ 1,405
2011-01-14	Employee Contributions	$ 1,254,269	893	$ 1,405
2010-10-15	Employer Contributions	$ 1,254,269	945	$ 1,327
2010-10-15	Employee Contributions	$ 1,254,269	945	$ 1,327
2010-09-15	Employer Contributions	$ 488,553	945	$ 517
2010-09-15	Employee Contributions	$ 488,553	945	$ 517
2010-07-15	Employer Contributions	$ 1,254,269	945	$ 1,327
2010-07-15	Employee Contributions	$ 1,254,269	945	$ 1,327
2010-04-15	Employer Contributions	$ 1,254,269	945	$ 1,327
2010-04-15	Employee Contributions	$ 1,254,269	945	$ 1,327
2010-03-31	Employer Contributions	$ 56,000	945	$ 59
2010-03-31	Employee Contributions	$ 56,000	945	$ 59
2010-01-01	Employer Contributions	$ 134,000	945	$ 142
2010-01-01	Employee Contributions	$ 134,000	945	$ 142

Potentially Related 401k Schemes

Potentially Related Companies

KOPPERS UTILITY AND INDUSTRIAL PRODUCTS, INC.

Was this data useful?

If you found the data here useful, PLEASE HELP US. We are a start-up and believe in making information freely available. By linking to us, posting on twitter, facebook and linkedin about us and generally spreading the word, you'll help us to grow. Our vision is to provide high quality data about the activities of all the companies in the world and where possible make it free to use and view. Finding and integrating data from thousands of data sources is time consuming and needs lots of effort. By simply spreading the word about us, you will help us. Please use the share buttons. It will only take a few seconds of your time. Thanks for helping

Information Disclaimer

The information provided on this website is not advice, endorsement or recommendation
The information published is supplied by third parties so we make no warranty on the accuracy, completeness etc. This information is provided "as-is". The information is subject to change as we obtain updates and corrections from the primary information sources.
You are free to use the information for your own personal research on the understanding to do so is at your own risk.

See full terms and conditions

Company Name:	KOPPERS INC.
Employer identification number (EIN):	251588399
NAIC Classification:	324190