401(k) · DOL Form 5500 · 2023

Boston Mutual Life Insurance Co. 401(k) Plan

Data updated 2026-08-11

$86M
Total assets
321
Participants
90th
Percentile by assets
$266,899
Avg per participant
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Official DOL plan name: Boston Mutual Life 401(k) Plan for Salaried Employees · Sponsored by Boston Mutual Life Insurance Co. · Massachusetts · Finance & Insurance

$86M in assets, 321 participants

Boston Mutual Life Insurance Co.'s Boston Mutual Life 401(k) Plan for Salaried Employees reported $86M in total assets and 321 participants in its 2023 DOL Form 5500 filing, ranking in the 90th 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.

  • 90th percentile by assets (of 127,072 plans)
  • #7,542 in Finance & Insurance (8,869 peers)

Coverage in Massachusetts

Boston Mutual Life 401(k) Plan for Salaried Employees covers 321 participants in Massachusetts, about 49% of the average Massachusetts filer (state average ~659 per filing). Assets: $86M.

$86M
total plan assets (2023 EOY)
321
covered participants
90th
percentile by assets (of 127,072 plans)
$266,899
avg assets per participant

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Boston Mutual Life 401(k) Plan for Salaried Employees reported net income rose from -$18M in the plan year 2022 filing to $14M in the plan year 2023 filing.
  • Boston Mutual Life 401(k) Plan for Salaried Employees end-of-year assets rose from $72M in the plan year 2022 filing to $86M in the plan year 2023 filing.
  • Boston Mutual Life 401(k) Plan for Salaried Employees reported participants rose from 290 in the plan year 2022 filing to 321 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Participants vs Massachusetts filers

In Massachusetts, the average filing covers about 659 participants across 4,265 plans. Boston Mutual Life 401(k) Plan for Salaried Employees reports 321 participants - about 49% of that state average ($86M EOY assets).

Massachusetts filing particulars

Total Assets (Beginning of Year)$72M
Net Assets (End of Year)$86M
Net Income$14M
Employer EIN041106240
Plan Effective Date1987-04-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Boston Mutual Life Insurance Co.)

$110M$120M$130M$140M$150M 202220232024 $115M $144M ▲ +26.0%
Total plan assets by year, all Boston Mutual Life Insurance Co. plans on file
Year Plans Participants Total Assets
2022 2 362 $115M
2023 2 388 $129M
2024 2 384 $144M

Nearby 401(k) Plans in Massachusetts

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

Boston Mutual Life 401(k) Plan for Salaried Employees vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Boston Mutual Life 401(k) Plan for Salaried Employees vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Boston Mutual Life 4…Fidelity Retirement …Liberty Mutual 401(k…Massachusetts Instit…Boston Scientific Co…Philips North Americ…
Boston Mutual Life 401(k) Plan for Salaried Employees vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Boston Mutual Life 401(k) Plan for Salaried Employees by total assets, not by location.

Frequently Asked Questions

How did Boston Mutual Life 401(k) Plan for Salaried Employees assets move in 2023?
Boston Mutual Life 401(k) Plan for Salaried Employees grew sharply - up 19.7% during 2023, from $72M to $86M. Reported net income was $14M.
How have Boston Mutual Life Insurance Co. plan assets changed over time?
Across 3 plan years on file (2022-2024), Boston Mutual Life Insurance Co.'s sponsor-wide assets grew 26.0%, from $115M to $144M.
Where does Boston Mutual Life 401(k) Plan for Salaried Employees rank by assets among Form 5500 filers?
Boston Mutual Life 401(k) Plan for Salaried Employees ranks in the 90th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Boston Mutual Life 401(k) Plan for Salaried Employees?
Among 401(k) plans in other states, the closest by assets is Basin Electric Power Cooperative Nd/Sd Union 401(k) Plan in ND ($86M, 285 participants).

Next read for Boston Mutual Life 401(k) Plan for Salar…

Filing takeaways

Ways to act on Boston Mutual Life 401(k) Plan for Salaried Employees's numbers.

  • By total assets, Boston Mutual Life 401(k) Plan for Salaried Employees ranks in the top 10% 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
  • Boston Mutual Life Insurance Co.'s sponsor-wide assets have grown 26.0% since 2022 across 3 plan years on file. More Finance & Insurance plans