401(k) · DOL Form 5500 · 2023

Mks Instruments, Inc. 401(k) Plan

Data updated 2026-08-11

$765M
Total assets: 2,991
Participants: 98th
Percentile by assets: $255,740
Avg per participant

Official DOL plan name: Mks Instruments, Inc. Profit Sharing & 401(k) Plan · Sponsored by Mks Instruments, Inc. · Massachusetts · Manufacturing

$765M in assets, 2,991 participants

Mks Instruments, Inc.'s Mks Instruments, Inc. Profit Sharing & 401(k) Plan reported $765M in total assets and 2,991 participants in its 2023 DOL Form 5500 filing, ranking in the 98th 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.

98th percentile by assets (of 127,072 plans)
#18,148 in Manufacturing (18,722 peers)

Coverage in Massachusetts

Mks Instruments, Inc. Profit Sharing & 401(k) Plan covers 2,991 participants in Massachusetts, 4.5x the typical Massachusetts plan (state average ~659 per filing). Assets: $765M.

$765M
total plan assets (2023 EOY): 2,991
covered participants: 98th
percentile by assets (of 127,072 plans): $255,740
avg assets per participant

Mks Instruments, Inc. Profit Sharing & 401(k) Plan reported net income rose from -$147M in the plan year 2022 filing to $91M in the plan year 2023 filing.
Mks Instruments, Inc. Profit Sharing & 401(k) Plan end-of-year assets rose from $633M in the plan year 2022 filing to $765M in the plan year 2023 filing.
Mks Instruments, Inc. Profit Sharing & 401(k) Plan reported participants rose from 2,719 in the plan year 2022 filing to 2,991 in the plan year 2023 filing.

See the national 2022→2023 release diff →

State

Massachusetts

Industry

Manufacturing

Participants vs Massachusetts filers

In Massachusetts, the average filing covers about 659 participants across 4,265 plans. Mks Instruments, Inc. Profit Sharing & 401(k) Plan reports 2,991 participants - 4.5x that state average ($765M EOY assets).

Massachusetts filing particulars

Total Assets (Beginning of Year)	$633M
Net Assets (End of Year)	$765M
Net Income	$91M
Employer EIN	042277512
Plan Effective Date	1978-07-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Mks Instruments, Inc.)

Total plan assets by year, all Mks Instruments, Inc. plans on file

Year	Plans	Participants	Total Assets
2022	1	2,719	$633M
2023	1	2,991	$765M
2024	1	2,770	$840M

Nearby 401(k) Plans in Massachusetts

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

Mks Instruments, Inc. Profit Sharing & 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Fidelity Retirement Savings Plan $28.6B · 62,289
Liberty Mutual 401(k) Plan $10.6B · 37,052
Massachusetts Institute of Technology Supplemental 401(k) Plan $6.8B · 14,094
Boston Scientific Corporation 401(k) Retirement Savings Plan $5.8B · 19,881
Philips North America 401(k) Plan $5.8B · 19,120

Compare Mks Instruments, Inc. Profit Sharing & 4… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Mks Instruments, Inc. Profit Sharing & 401(k) Plan by total assets, not by location.

Caes 401(k) Plan (CA) $765M · 3,593
Skf USA Inc. 401(k) Retirement and Savings Plan (PA) $765M · 2,746
Pnm Resources, Inc. Retirement Savings Plan (NM) $765M · 1,531
Lanxess Corporation Defined Contribution Plan (PA) $764M · 2,319

Frequently Asked Questions

How did Mks Instruments, Inc. Profit Sharing & 401(k) Plan assets move in 2023? ▼

Mks Instruments, Inc. Profit Sharing & 401(k) Plan grew sharply - up 20.8% during 2023, from $633M to $765M. Reported net income was $91M.

How have Mks Instruments, Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Mks Instruments, Inc.'s sponsor-wide assets grew 32.6%, from $633M to $840M.

Where does Mks Instruments, Inc. Profit Sharing & 401(k) Plan rank by assets among Form 5500 filers? ▼

Mks Instruments, Inc. Profit Sharing & 401(k) Plan ranks in the 98th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).

Which 401(k) plans are similar in size to Mks Instruments, Inc. Profit Sharing & 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by assets is Caes 401(k) Plan in CA ($765M, 3,593 participants).

Next read for Mks Instruments, Inc. Profit Sharing & 4…

Filing takeaways

Ways to act on Mks Instruments, Inc. Profit Sharing & 401(k) Plan's numbers.

By total assets, Mks Instruments, Inc. Profit Sharing & 401(k) 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 Massachusetts. Compare plans
Mks Instruments, Inc.'s sponsor-wide assets have grown 32.6% since 2022 across 3 plan years on file. More Manufacturing plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 042277512.