401(k) · DOL Form 5500 · 2024

Cambridge Isotope Laboratories, Inc. 401(k) Plan

Data updated 2026-08-11

$62M
Total assets: 334
Participants: 86th
Percentile by assets: $186,410
Avg per participant

Official DOL plan name: Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust · Sponsored by Cambridge Isotope Laboratories, Inc. · Massachusetts · Manufacturing

$62M in assets, 334 participants

Cambridge Isotope Laboratories, Inc.'s Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust reported $62M in total assets and 334 participants in its 2024 DOL Form 5500 filing, ranking in the 86th 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.

86th percentile by assets (of 123,622 plans)
#14,310 in Manufacturing (17,777 peers)

Where Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust sits by assets

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust sits in the top quartile of all filed plans by assets, $62M for 334 participants (~$186,410/participant), up 21.0% in 2024.

$62M
total plan assets (2024 EOY): 334
covered participants: 86th
percentile by assets (of 123,622 plans): $186,410
avg assets per participant

Where Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust sits by total assets

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust vs every filed plan by assets

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

$62,260,904 Top 14% higher than 86% of 123,620 filed plans

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust reported net income rose from $8M in the plan year 2023 filing to $11M in the plan year 2024 filing.
Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust end-of-year assets rose from $51M in the plan year 2023 filing to $62M in the plan year 2024 filing.
Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust reported participants rose from 297 in the plan year 2023 filing to 334 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Massachusetts

Industry

Manufacturing

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust vs the 2024 asset distribution

By assets, Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust outranks 86% of the 123,622 plans that filed a Form 5500 for the 2024 plan year, and holds roughly 0.6x the national average plan size of $100M (721 average participants).

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)	$51M
Net Assets (End of Year)	$62M
Net Income	$11M
Employer EIN	042950751
Plan Effective Date	1995-12-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Cambridge Isotope Laboratories, Inc.)

Total plan assets by year, all Cambridge Isotope Laboratories, Inc. plans on file

Year	Plans	Participants	Total Assets
2022	1	284	$43M
2023	1	297	$51M
2024	1	334	$62M

Nearby 401(k) Plans in Massachusetts

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

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Fidelity Retirement Savings Plan $34.2B · 66,907
Liberty Mutual 401(k) Plan $11.4B · 34,618
Massachusetts Institute of Technology Supplemental 401(k) Plan $7.7B · 14,762
Boston Scientific Corporation 401(k) Retirement Savings Plan $6.8B · 20,639
State Street Salary Savings Program $6.5B · 12,777

Compare Cambridge Isotope Laboratories, Inc. 401… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust by total assets, not by location.

Santafe Healthcare, Inc. 401(k) Retirement Savings Plan (FL) $62M · 841
Employees' Profit Sharing 401 (K) Plan (CA) $62M · 137
Fei.Com, Inc. 401(k) Plan (MD) $62M · 406
Net Health Systems, Inc. Profit Sharing Plan and Trust (PA) $62M · 549

Frequently Asked Questions

How did Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust assets move in 2024? ▼

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust grew sharply - up 21.0% during 2024, from $51M to $62M. Reported net income was $11M.

How have Cambridge Isotope Laboratories, Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Cambridge Isotope Laboratories, Inc.'s sponsor-wide assets grew 43.4%, from $43M to $62M.

Where does Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust rank by assets among Form 5500 filers? ▼

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust ranks in the 86th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).

Which 401(k) plans are similar in size to Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust? ▼

Among 401(k) plans in other states, the closest by assets is Santafe Healthcare, Inc. 401(k) Retirement Savings Plan in FL ($62M, 841 participants).

Next read for Cambridge Isotope Laboratories, Inc. 401…

Scale reading

Ways to act on Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust's numbers.

By total assets, Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust ranks in the top quartile 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
Cambridge Isotope Laboratories, Inc.'s sponsor-wide assets have grown 43.4% 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 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 042950751.