401(k) · DOL Form 5500 · 2023

Koppers Inc. 401(k) Plan

Data updated 2026-08-25

$182M
Total assets Near avg plan size
1,191
Participants Near avg headcount
94th
Percentile by assets National rank
$153,103
Avg per participant Above avg balance/head
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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.

  • #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.

#17,094
in Manufacturing (18,722 peers)
+16.6%
assets growth YoY
1.8×
vs typical plan assets (national mean)

Employee Savings Plan of Koppers Inc and Subsidiaries's outsized position by total assets

Employee Savings Plan of Koppers Inc and Subsidiaries vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$182,345,330 Top 6% higher than 94% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Employee Savings Plan of Koppers Inc and Subsidiaries's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Employee Savings Plan of Koppers Inc and Subsidiaries lands in the large band (1,191 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • 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 →

EBSA filing schedule strip

Filing strip 251588399 · Koppers Inc. PY 2023 · 401(k)

Employee Savings Plan of Koppers Inc and Subsidiaries · $182M · 1,191 · 94th

  • EIN $182M
  • EIN 1,191
  • EIN 94th
  • EIN 401(k)
  • EIN near Enterprise Employees' Pension and 401(k) Plan
  • EIN ind #17094

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Manufacturing retirement plans → · Plans in Pennsylvania →

Employee Savings Plan of Koppers Inc and Subsidiaries in the asset neighbourhood

Employee Savings Plan of Koppers Inc and SubsidiariesEmployee Savings Plan of Kop…$182MEnterprise Employees' Pension and 401(k) PlanEnterprise Employees' Pensio…$182MVaco 401(k) Plan$182MLozier Corporation 401(k) Savings PlanLozier Corporation 401(k) Sa…$182MBoyd Company 401(k) Plan$182M
End-of-year total assets ($M) among Employee Savings Plan of Koppers Inc and Subsidiaries and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$156M
Net Assets (End of Year)$182M
Net Income$26M
Employer EIN251588399
Plan Effective Date1989-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Koppers Inc.)

Sponsor-wide plan assets over time

All Koppers Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$352M 25.33729413155118% vs 2022
2024 filing year
$250M$300M$350M$400M 202220232024 $281M $352M ▲ +25.3%
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 Scatter plot of 6 data points. -50000050000100000 -505101520 Total assets ($B) Participants Employee Savings Plan of Koppers Inc and Subsidiaries, Total assets ($B): 0.18234533 · Participants: 1191Employee Savings Plan of Koppers Inc and SubsidiariesComcast Corporation Retirement - Investment Plan, Total assets ($B): 17.368669862 · Participants: 93136Comcast Corporation Retirement - Investment PlanCigna 401(k) Plan, Total assets ($B): 13.003870935 · Participants: 66760Cigna 401(k) PlanThe Vanguard Retirement and Savings Plan, Total assets ($B): 9.765617477 · Participants: 18200The Vanguard Retirement and Savings PlanThe PNC Financial Services Group, Inc. Incentive Savings Plan, Total assets ($B): 9.339762 · Participants: 61697The PNC Financial Services Group, Inc. Incentive Savings PlanThe Bank of New York Mellon Corporation 401(k) Savings Plan, Total assets ($B): 8.955655142 · Participants: 25184The Bank of New York Mellon Corporation 401(k) Savings Plan
Employee Savings Plan of Koppers Inc and Subsidiaries vs. nearby 401(k) plans in Pennsylvania, assets vs. participants
Compare Employee Savings Plan of Koppers Inc and Subsidiaries side-by-side with 3 peers →

Employee Savings Plan of Koppers Inc and Subsidiaries's out-of-state 401(k) peers by assets and headcount

Outside Pennsylvania, the nearest 401(k) by assets is Enterprise Employees' Pension and 401(k) Plan in MD ($182M); by covered participants it is Cottingham and Butler Insurance Services, Inc. Profit Sharing & Savings Plan in IA (1,191 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($182M here).

Similar participant headcount

Nearest other-state filings by covered participants (1,191 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

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).
Which 401(k) plans cover a similar participant headcount to Employee Savings Plan of Koppers Inc and Subsidiaries? ▼
Among 401(k) plans in other states, the closest by covered participants is Cottingham and Butler Insurance Services, Inc. Profit Sharing & Savings Plan in IA (1,191 participants, $185M in assets).

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.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.