401(k) · DOL Form 5500 · 2023

Cambridge Isotope Laboratories, Inc. 401(k) Plan

Data updated 2026-08-25

$51M
Total assets Below avg plan size
297
Participants Below avg headcount
86th
Percentile by assets National rank
$173,249
Avg per participant Above avg balance/head
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Official DOL plan name: Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust · Sponsored by Cambridge Isotope Laboratories, Inc. · Massachusetts · Manufacturing

$51M in assets, 297 participants

Cambridge Isotope Laboratories, Inc.'s Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust reported $51M in total assets and 297 participants in its 2023 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.

  • #14,884 in Manufacturing (18,722 peers)

Coverage in Massachusetts

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust covers 297 participants in Massachusetts, about 45% of the average Massachusetts filer (state average ~659 per filing). Assets: $51M.

#14,884
in Manufacturing (18,722 peers)
+18.5%
assets growth YoY
0.5×
vs typical plan assets (national mean)

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust's outsized position by total assets

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

End-of-year total assets · plan year 2023 · DOL Form 5500

$51,454,996 Top 14% higher than 86% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

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

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust sits mid-pack in the medium band (297 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust reported net income rose from -$7M in the plan year 2022 filing to $8M in the plan year 2023 filing.
  • Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust end-of-year assets rose from $43M in the plan year 2022 filing to $51M in the plan year 2023 filing.
  • Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust reported participants rose from 284 in the plan year 2022 filing to 297 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 042950751 · Cambridge Isotope Laboratories, Inc. PY 2023 · 401(k)

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust · $51M · 297 · 86th

  • EIN $51M
  • RANK 297
  • PHOTO 86th
  • IND 401(k)
  • EOY near Skyline Displays 401(k) Plan
  • 5500 ind #14884

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Manufacturing retirement plans → · Plans in Massachusetts →

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust in the asset neighbourhood

Ocdc 401(k) Plan$51MPerformance Health 401(k) PlanPerformance Health 401(k) Pl…$51MCambridge Isotope Laboratories, Inc. 401(k) Plan & TrustCambridge Isotope Laboratori…$51MSkyline Displays 401(k) Plan$51MThe Mazzella Companies Savings & Retirement PlanThe Mazzella Companies Savin…$51M
End-of-year total assets ($M) among Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$43M
Net Assets (End of Year)$51M
Net Income$8M
Employer EIN042950751
Plan Effective Date1995-12-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Cambridge Isotope Laboratories, Inc.)

Sponsor-wide plan assets over time

All Cambridge Isotope Laboratories, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$62M 43.38180962165945% vs 2022
2024 filing year
$40M$50M$60M$70M 202220232024 $43.4M $62.3M ▲ +43.4%
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 Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust, Total assets ($B): 0.051454996 · Participants: 297Cambridge Isotope Laboratories, Inc. 401(k) Plan & TrustFidelity Retirement Savings Plan, Total assets ($B): 28.649852331 · Participants: 62289Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 10.556596852 · Participants: 37052Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 6.829912863 · Participants: 14094Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 5.786107181 · Participants: 19881Boston Scientific Corporation 401(k) Retirement Savings PlanPhilips North America 401(k) Plan, Total assets ($B): 5.779286156 · Participants: 19120Philips North America 401(k) Plan
Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust side-by-side with 3 peers →

Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Skyline Displays 401(k) Plan in MN ($51M); by covered participants it is Pretzels, Inc. 401(k) & Profit Sharing Plan in IN (297 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($51M here).

Similar participant headcount

Nearest other-state filings by covered participants (297 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust assets move in 2023? ▼
Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust grew sharply - up 18.5% during 2023, from $43M to $51M. Reported net income was $8M.
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 127,072 plans that reported assets for plan year 2023 (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 Skyline Displays 401(k) Plan in MN ($51M, 420 participants).
Which 401(k) plans cover a similar participant headcount to Cambridge Isotope Laboratories, Inc. 401(k) Plan & Trust? ▼
Among 401(k) plans in other states, the closest by covered participants is Pretzels, Inc. 401(k) & Profit Sharing Plan in IN (297 participants, N/A in assets).

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 042950751.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.