Westlake Management Services 401(k) and pension plans

Westlake Management Services, Inc., Houston, TX. EIN 76-0321065. Annual reports 2009–2024. Also filed as Westlake Chemical Corporation; Westlake Management Services Inc.

Westlake Management Services, Inc. has 2 active retirement plans on file. The largest is the Westlake Savings Plan, with 14,231 participants and $2.0 billion in assets in 2024. Vanguard has been its recordkeeper since 2018.

Active plans: 2
Participants: 17,465
Plan assets: $2.4 billion
401(k) recordkeeper: Vanguard
Plans on file: 3
Industry: Manufacturing

All 3 plans

Active plans first

Westlake Savings Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 004Employer EIN 76-0321065
Participants (2024): 14,231
Net assets (2024): $2.0 billion
Recordkeeper: VanguardEarlier: Merrill (2017), T. Rowe Price (2009–2016)
Plan administrator: Westlake Management Services, Inc.
2801 Post Oak BLVD, Suite 600
Houston, TX 77056
(713) 585-7928As filed for 2024
In effect since: January 1, 1987

Plans merged into this one: Axiall Corporation 401(k) Retirement Savings Plan (2017); Headwaters Incorporated 401(k) Savings & Investment Plan (2022).

Earlier sponsor: Westlake Chemical Corporation (2009–2014).

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	14,231	$2.0 billion	Vanguard
2023	14,029	$1.8 billion	Vanguard
2022	12,797	$1.5 billion	Vanguard
2021	11,295	$1.6 billion	Vanguard
2020	7,255	$1.3 billion	Vanguard
2019	7,200	$1.1 billion	Vanguard
2018	7,327	$862 million	Vanguard
2017	6,756	$898 million	Merrill
2016	2,778	$404 million	T. Rowe Price
2015	2,656	$365 million	T. Rowe Price
2014	2,424	$346 million	T. Rowe Price
2013	2,295	$315 million	T. Rowe Price
2012	2,005	$259 million	T. Rowe Price
2011	2,030	$225 million	T. Rowe Price
2010	1,985	$220 million	not listed
2009	1,932	$191 million	T. Rowe Price

Westlake Defined Benefit Plan

Pension (defined benefit)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 001Employer EIN 76-0321065
Participants (2024): 3,234
Net assets (2024): $417 million
Plan administrator: Westlake Management Services, Inc.
2801 Post Oak BLVD., 6TH Floor
Houston, TX 77056
(713) 960-9111As filed for 2024
In effect since: March 1, 1990

Plans merged into this one: Westlake Salaried Employees' Defined Benefit Plan (2018).

Earlier sponsor: Westlake Chemical Corporation (2009–2014).

Earlier plan names: Westlake Wage Employees' Defined Benefit Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	3,234	$417 million	not listed
2023	3,287	$427 million	not listed
2022	3,336	$415 million	not listed
2021	3,378	$562 million	not listed
2020	3,466	$563 million	not listed
2019	3,538	$527 million	not listed
2018	3,783	$484 million	not listed
2017	265	$18.7 million	not listed
2016	272	$18.6 million	not listed
2015	278	$19.5 million	not listed
2014	284	$20.7 million	not listed
2013	285	$19.7 million	not listed
2012	285	$16.7 million	not listed
2011	288	$14.8 million	not listed
2010	288	$13.5 million	not listed
2009	289	$11.3 million	not listed

Westlake Salaried Employees' Defined Benefit Plan

Cash balance pension, frozenMerged

Merged. In 2018 its assets moved to the Westlake Wage Employees' Defined Benefit Plan, sponsored by Westlake Management Services, Inc. (EIN 76-0321065, plan 001). Accounts moved with them, so that plan is the one to contact.

Plan number: 002Employer EIN 76-0321065
Participants (2017): 4,967
Net assets (2017): $634 million
Plan administrator: Westlake Management Services, Inc.
2801 Post Oak BLVD., 6TH Floor
Houston, TX 77056
(713) 960-9111As filed for 2018
In effect since: March 1, 1990

Plans merged into this one: Axiall Corporation Retirement Plan (2017); Eagle US 2 LLC Retirement Pension Plan (2017).

Year by year, 2015 to 2018

Plan year	Participants	Net assets	Recordkeeper
2018	0	$0	not listed
2017	4,967	$634 million	not listed
2016	207	$31.6 million	not listed
2015	210	$31.3 million	not listed

If you had money in one of these plans

Call Vanguard (investor.vanguard.com), which runs the Westlake Savings Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((713) 585-7928). That number was filed for 2024; ask for the benefits or retirement plan office.
If your plan was merged, your account moved with it. Follow the link on the plan to the plan it went into, and contact that one.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.