401(k) · DOL Form 5500 · 2024

Westlake Management Services, Inc. 401(k) Plan

Data updated 2026-08-25

$2.0B
Total assets Very large vs avg
10,707
Participants Very large workforce
99th
Percentile by assets National rank
$189,057
Avg per participant Above avg balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Westlake Savings Plan · Sponsored by Westlake Management Services, Inc. · Texas · Manufacturing

$2.0B in assets, 10,707 participants

Westlake Management Services, Inc.'s Westlake Savings Plan reported $2.0B in total assets and 10,707 participants in its 2024 DOL Form 5500 filing, ranking in the 99th 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.

  • #17,526 in Manufacturing (17,777 peers)

Coverage in Texas

Westlake Savings Plan covers 10,707 participants in Texas, 16x the typical Texas plan (state average ~688 per filing). Assets: $2.0B.

#17,526
in Manufacturing (17,777 peers)
+14.2%
assets growth YoY
20×
vs typical plan assets (national mean)

Westlake Savings Plan's outsized position by total assets

Westlake Savings Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$2,024,230,826 Top 1% higher than 99% of 123,620 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 2024

Westlake Savings Plan's mega-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Westlake Savings Plan is a mega filing (10,707 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Westlake Savings Plan end-of-year assets rose from $1.8B in the plan year 2023 filing to $2.0B in the plan year 2024 filing.
  • Westlake Savings Plan reported net income fell from $292M in the plan year 2023 filing to $252M in the plan year 2024 filing.
  • Westlake Savings Plan reported participants rose from 10,546 in the plan year 2023 filing to 10,707 in the plan year 2024 filing.

See the national 2023→2024 release diff →

EBSA filing schedule strip

Filing strip 760321065 · Westlake Management Services, Inc. PY 2024 · 401(k)

Westlake Savings Plan · $2.0B · 10,707 · 99th

  • IND $2.0B
  • IND 10,707
  • IND 99th
  • IND 401(k)
  • IND near Autodesk 401(k) Plan
  • IND ind #17526

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 Texas →

Westlake Savings Plan in the asset neighbourhood

Nisource Inc Retirement Savings PlanNisource Inc Retirement Savi…$2.0BWestlake Savings Plan$2.0BAutodesk 401(k) Plan$2.0BRai 401(k) Savings Plan$2.0BSyngenta Corporation Investment Savings PlanSyngenta Corporation Investm…$2.0B
End-of-year total assets ($B) among Westlake Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Texas filing particulars

Total Assets (Beginning of Year)$1.8B
Net Assets (End of Year)$2.0B
Net Income$252M
Employer EIN760321065
Plan Effective Date1987-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Westlake Management Services, Inc.)

Sponsor-wide plan assets over time

All Westlake Management Services, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$2.4B 29.431467805450534% vs 2022
2024 filing year
$1.8B$2B$2.2B$2.4B$2.6B 202220232024 $1.89B $2.44B ▲ +29.1%
Year Plans Participants Total Assets
2022 2 10,778 $1.9B
2023 2 11,622 $2.2B
2024 2 11,688 $2.4B

Nearby 401(k) Plans in Texas

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

Westlake Savings Plan vs. nearby 401(k) plans in Texas, assets vs. participants Scatter plot of 6 data points. 050000100000150000 -1001020304050 Total assets ($B) Participants Westlake Savings Plan, Total assets ($B): 2.024230826 · Participants: 10707Westlake Savings PlanAT&T Retirement Savings Plan, Total assets ($B): 43.121795 · Participants: 109889AT&T Retirement Savings PlanExxonmobil Savings Plan, Total assets ($B): 23.711 · Participants: 21990Exxonmobil Savings PlanChevron Employee Savings Investment Plan, Total assets ($B): 20.378704663 · Participants: 21505Chevron Employee Savings Investment PlanCaterpillar 401(k) Savings Plan, Total assets ($B): 18.81200478 · Participants: 43873Caterpillar 401(k) Savings PlanSouthwest Airlines Co. Retirement Savings Plan, Total assets ($B): 16.991748637 · Participants: 67820Southwest Airlines Co. Retirement Savings Plan
Westlake Savings Plan vs. nearby 401(k) plans in Texas, assets vs. participants
Compare Westlake Savings Plan side-by-side with 3 peers →

Scale composition for Westlake Savings Plan

Westlake Savings Plan reports $2.0B in end-of-year assets across 10,707 participants (0.016% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.011% of 93,925,755 covered participants) - about $189,057 per participant (1.4x the national average assets-per-participant) . Net income for plan year 2024 was $252M.

This plan identity (EIN 760321065, plan #004) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.5B to $2.0B (+37.6%) while covered participants moved from 9,573 to 10,707 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 9,573 $1.5B Open filing
2023 10,546 $1.8B Open filing
2024 · index core 10,707 $2.0B This page

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Westlake Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Texas, the nearest 401(k) by assets is Autodesk 401(k) Plan in CA ($2.0B); by covered participants it is Alight Solutions LLC 401(k) Plan (Fka Hewitt Associates LLC 401(k) Plan) in IL (10,707 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($2.0B here).

Similar participant headcount

Nearest other-state filings by covered participants (10,707 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Westlake Savings Plan assets move in 2024? ▼
Westlake Savings Plan grew at a solid clip - up 14.2% during 2024, from $1.8B to $2.0B. Reported net income was $252M.
How have Westlake Management Services, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Westlake Management Services, Inc.'s sponsor-wide assets grew 29.4%, from $1.9B to $2.4B.
Where does Westlake Savings Plan rank by assets among Form 5500 filers? ▼
Westlake Savings Plan ranks in the 99th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Westlake Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Autodesk 401(k) Plan in CA ($2.0B, 5,804 participants).
Which 401(k) plans cover a similar participant headcount to Westlake Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Alight Solutions LLC 401(k) Plan (Fka Hewitt Associates LLC 401(k) Plan) in IL (10,707 participants, $2.5B in assets).

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 760321065.

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.