Entegris 401(k) plan

Entegris, Inc., Billerica, MA. EIN 41-1941551. Annual reports 2009–2024.

Entegris, Inc. has one active retirement plan on file, the Entegris, Inc. 401(k) Retirement Savings Plan, with 6,446 participants and $881 million in assets in 2024. Fidelity has been its recordkeeper since 2009. No traditional pension plan appears in Entegris's filings since 2009.

Active plans: 1
Participants: 6,446
Plan assets: $881 million
401(k) recordkeeper: Fidelity
Plans on file: 1
Industry: Manufacturing

The plan

Entegris, Inc. 401(k) Retirement Savings Plan

401(k)Active

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

Plan number: 002Employer EIN 41-1941551
Participants (2024): 6,446
Net assets (2024): $881 million
Recordkeeper: Fidelity2009–2024
Plan administrator: Entegris, Inc.
129 Concord Road
Billerica, MA 01821
(952) 556-3131As filed for 2024
In effect since: January 1, 2000

Earlier plan names: Entegris, Inc. 401K Savings & Profit Sharing Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	6,446	$881 million	Fidelity
2023	5,874	$804 million	Fidelity
2022	5,479	$468 million	Fidelity
2021	4,668	$564 million	Fidelity
2020	3,791	$479 million	Fidelity
2019	3,335	$405 million	Fidelity
2018	3,275	$320 million	Fidelity
2017	2,725	$333 million	Fidelity
2016	2,593	$282 million	Fidelity
2015	2,582	$259 million	Fidelity
2014	2,591	$261 million	Fidelity
2013	1,898	$193 million	Fidelity
2012	1,849	$157 million	Fidelity
2011	1,785	$139 million	Fidelity
2010	1,763	$140 million	Fidelity
2009	1,790	$128 million	Fidelity

If you had money in one of these plans

Call Fidelity (fidelity.com), which runs the Entegris, Inc. 401(k) Retirement 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 ((952) 556-3131). That number was filed for 2024; ask for the benefits or retirement plan office.
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.

The plan

Entegris, Inc. 401(k) Retirement Savings Plan

If you had money in one of these plans

What these numbers are

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