Entegris, Inc. 401(k) Plan: Login, Facts & Contact Information

Entegris, Inc. 401(k) Plan Facts

Plan name
ENTEGRIS, INC. 401(K) RETIREMENT SAVINGS PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
ENTEGRIS, INC.
Participants
5,874 (4,490 active employees)
Former employees with a balance
1,924
Plan assets
$880,815,363 at Dec 31, 2024
Average account balance
$141,202 across 6,238 accounts
Employer contributions
$27,227,011 in plan year 2024 (34% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 2000
✓ Employer contributions— Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments✓ Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Oct 10, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $81.1 million went into the plan in contributions, $27.2 million of it from the employer (34%).
  • $124.0 million was paid out to participants.
  • Investment and other income added $120.3 million.
  • Administrative expenses were $328,439, about $53 per account.

How the Entegris, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
20193,275$404.7 million$7.74 million$26.1 million
20203,335$478.9 million$9.32 million$37.0 million
20213,791$564.5 million$11.3 million$33.5 million
20224,668$467.9 million$17.6 million$46.2 million
20235,479$804.0 million$18.7 million$52.4 million
20245,874$880.8 million$27.2 million$124.0 million

Entegris, Inc. 401(k) Contact Information

Phone
952-556-3131
Mailing address
129 CONCORD ROAD, BILLERICA MA 01821
Plan sponsor
ENTEGRIS, INC.
Employer identification number (EIN)
41-1941551
Plan number
002

Questions about the Entegris, Inc. 401(k)

Does Entegris, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $27.2 million, 34% of all contributions.

Does the Entegris, Inc 401(k) have automatic enrollment?

No. The plan does not report automatic enrollment; employees enroll themselves.

How many people are in the Entegris, Inc 401(k) plan?

5,874 participants at the start of plan year 2024, 4,490 of them active employees, and 1,924 former employees who still had money in the plan.

What is the average 401(k) balance at Entegris, Inc?

About $141,202 per account: $880.8 million in plan assets across 6,238 accounts with a balance at the end of plan year 2024.

Who manages the Entegris, Inc 401(k) accounts?

Fidelity NetBenefits (listed on the filing as FIDELITY INVESTMENTS INSTITUTIONAL) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Entegris, Inc. How do I access my 401(k)?

Your account stays with Fidelity NetBenefits after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

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