401(k) · DOL Form 5500 · 2024

Westlake Services Holding Company 401(k) Plan

Data updated 2026-08-11

$507M
Total assets: 1,772
Participants: 97th
Percentile by assets: $286,276
Avg per participant

Official DOL plan name: Westlake Services Holding Company Employee Stock Ownership Plan · Sponsored by Westlake Services Holding Company · California · Management of Enterprises

$507M in assets, 1,772 participants

Westlake Services Holding Company's Westlake Services Holding Company Employee Stock Ownership Plan reported $507M in total assets and 1,772 participants in its 2024 DOL Form 5500 filing, ranking in the 97th 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.

97th percentile by assets (of 123,622 plans)
#1,033 in Management of Enterprises (1,133 peers)

Coverage in California

Westlake Services Holding Company Employee Stock Ownership Plan covers 1,772 participants in California, 2.8x the typical California plan (state average ~630 per filing). Assets: $507M.

$507M
total plan assets (2024 EOY): 1,772
covered participants: 97th
percentile by assets (of 123,622 plans): $286,276
avg assets per participant

Westlake Services Holding Company Employee Stock Ownership Plan reported net income rose from -$12M in the plan year 2023 filing to $13M in the plan year 2024 filing.
Westlake Services Holding Company Employee Stock Ownership Plan reported participants fell from 1,928 in the plan year 2023 filing to 1,772 in the plan year 2024 filing.
Westlake Services Holding Company Employee Stock Ownership Plan end-of-year assets rose from $494M in the plan year 2023 filing to $507M in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

California

Industry

Management of Enterprises

Participants vs California filers

In California, the average filing covers about 630 participants across 15,291 plans. Westlake Services Holding Company Employee Stock Ownership Plan reports 1,772 participants - 2.8x that state average ($507M EOY assets).

California filing particulars

Total Assets (Beginning of Year)	$494M
Net Assets (End of Year)	$504M
Net Income	$13M
Employer EIN	611636987
Plan Effective Date	2001-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Westlake Services Holding Company)

Total plan assets by year, all Westlake Services Holding Company plans on file

Year	Plans	Participants	Total Assets
2022	1	1,810	$506M
2023	1	1,928	$494M
2024	1	1,772	$507M

Nearby 401(k) Plans in California

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

Westlake Services Holding Company Employee Stock Ownership Plan vs. nearby 401(k) plans in California, assets vs. participants

Google LLC 401(k) Savings Plan $48.7B · 116,712
Oracle Corporation 401(k) Savings and Investment Plan $31.0B · 58,962
Intel 401(k) Savings Plan $24.9B · 55,298
Apple 401(k) Plan $24.7B · 101,450
Cisco Systems,Inc. 401(k) Plan $22.7B · 40,452

Compare Westlake Services Holding Company Employ… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Westlake Services Holding Company Employee Stock Ownership Plan by total assets, not by location.

Pilot Travel Centers LLC 401(k) Plan (TN) $507M · 28,109
Capital Blue Cross Employee Savings Plan (PA) $508M · 2,260
K&l Gates 401(k) Plan Beta (PA) $507M · 1,427
Jones Day Supplemental Savings Plan (OH) $507M · 2,237

Frequently Asked Questions

How did Westlake Services Holding Company Employee Stock Ownership Plan assets move in 2024? ▼

Westlake Services Holding Company Employee Stock Ownership Plan edged up modestly - up 2.7% during 2024, from $494M to $507M. Reported net income was $13M.

How have Westlake Services Holding Company plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Westlake Services Holding Company's sponsor-wide assets grew 0.2%, from $506M to $507M.

Where does Westlake Services Holding Company Employee Stock Ownership Plan rank by assets among Form 5500 filers? ▼

Westlake Services Holding Company Employee Stock Ownership Plan ranks in the 97th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).

Which 401(k) plans are similar in size to Westlake Services Holding Company Employee Stock Ownership Plan? ▼

Among 401(k) plans in other states, the closest by assets is Pilot Travel Centers LLC 401(k) Plan in TN ($507M, 28,109 participants).

Next read for Westlake Services Holding Company Employ…

Filing takeaways

Ways to act on Westlake Services Holding Company Employee Stock Ownership Plan's numbers.

By total assets, Westlake Services Holding Company Employee Stock Ownership Plan ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in California. Compare plans
Westlake Services Holding Company's sponsor-wide assets have grown 0.2% since 2022 across 3 plan years on file. More Management of Enterprises plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 611636987.