401(k) · DOL Form 5500 · 2023

Koppers Inc. 401(k) Plan

Data updated 2026-08-11

$182M
Total assets: 1,191
Participants: 94th
Percentile by assets: $153,103
Avg per participant

Official DOL plan name: Employee Savings Plan of Koppers Inc and Subsidiaries · Sponsored by Koppers Inc. · Pennsylvania · Manufacturing

$182M in assets, 1,191 participants

Koppers Inc.'s Employee Savings Plan of Koppers Inc and Subsidiaries reported $182M in total assets and 1,191 participants in its 2023 DOL Form 5500 filing, ranking in the 94th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

94th percentile by assets (of 127,072 plans)
#17,094 in Manufacturing (18,722 peers)

Where Employee Savings Plan of Koppers Inc and Subsidiaries sits by assets

Employee Savings Plan of Koppers Inc and Subsidiaries sits in the top 10% of all filed plans by assets, $182M for 1,191 participants (~$153,103/participant), up 16.6% in 2023.

$182M
total plan assets (2023 EOY): 1,191
covered participants: 94th
percentile by assets (of 127,072 plans): $153,103
avg assets per participant

Employee Savings Plan of Koppers Inc and Subsidiaries reported net income rose from -$31M in the plan year 2022 filing to $26M in the plan year 2023 filing.
Employee Savings Plan of Koppers Inc and Subsidiaries reported participants rose from 1,020 in the plan year 2022 filing to 1,191 in the plan year 2023 filing.
Employee Savings Plan of Koppers Inc and Subsidiaries end-of-year assets rose from $156M in the plan year 2022 filing to $182M in the plan year 2023 filing.

See the national 2022→2023 release diff →

State

Pennsylvania

Industry

Manufacturing

Employee Savings Plan of Koppers Inc and Subsidiaries vs the 2023 asset distribution

By assets, Employee Savings Plan of Koppers Inc and Subsidiaries outranks 94% of the 127,072 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 1.8x the national average plan size of $100M (721 average participants).

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)	$156M
Net Assets (End of Year)	$182M
Net Income	$26M
Employer EIN	251588399
Plan Effective Date	1989-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Koppers Inc.)

Total plan assets by year, all Koppers Inc. plans on file

Year	Plans	Participants	Total Assets
2022	3	1,773	$281M
2023	3	1,900	$315M
2024	4	2,099	$352M

Nearby 401(k) Plans in Pennsylvania

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Employee Savings Plan of Koppers Inc and Subsidiaries vs. nearby 401(k) plans in Pennsylvania, assets vs. participants

Comcast Corporation Retirement - Investment Plan $17.4B · 93,136
Cigna 401(k) Plan $13.0B · 66,760
The Vanguard Retirement and Savings Plan $9.8B · 18,200
The PNC Financial Services Group, Inc. Incentive Savings Plan $9.3B · 61,697
The Bank of New York Mellon Corporation 401(k) Savings Plan $9.0B · 25,184

Compare Employee Savings Plan of Koppers Inc and… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Employee Savings Plan of Koppers Inc and Subsidiaries by total assets, not by location.

Enterprise Employees' Pension and 401(k) Plan (MD) $182M · 1,028
Vaco 401(k) Plan (TN) $182M · 7,124
Lozier Corporation 401(k) Savings Plan (NE) $182M · 1,884
Boyd Company 401(k) Plan (KY) $182M · 1,275

Frequently Asked Questions

How did Employee Savings Plan of Koppers Inc and Subsidiaries assets move in 2023? ▼

Employee Savings Plan of Koppers Inc and Subsidiaries grew sharply - up 16.6% during 2023, from $156M to $182M. Reported net income was $26M.

How have Koppers Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Koppers Inc.'s sponsor-wide assets grew 25.3%, from $281M to $352M.

Where does Employee Savings Plan of Koppers Inc and Subsidiaries rank by assets among Form 5500 filers? ▼

Employee Savings Plan of Koppers Inc and Subsidiaries ranks in the 94th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 10% of all filed plans by assets).

Which 401(k) plans are similar in size to Employee Savings Plan of Koppers Inc and Subsidiaries? ▼

Among 401(k) plans in other states, the closest by assets is Enterprise Employees' Pension and 401(k) Plan in MD ($182M, 1,028 participants).

Next read for Employee Savings Plan of Koppers Inc and…

Scale reading

Ways to act on Employee Savings Plan of Koppers Inc and Subsidiaries's numbers.

By total assets, Employee Savings Plan of Koppers Inc and Subsidiaries ranks in the top 10% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Pennsylvania. Compare plans
Koppers Inc.'s sponsor-wide assets have grown 25.3% since 2022 across 3 plan years on file. More Manufacturing plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 251588399.