401(k) · DOL Form 5500 · 2023

Boston Mutual Life Insurance Co. 401(k) Plan

Data updated 2026-08-25

$86M
Total assets Below avg plan size
321
Participants Below avg headcount
90th
Percentile by assets National rank
$266,899
Avg per participant High balance/head
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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.

  • #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.

#7,542
in Finance & Insurance (8,869 peers)
+19.7%
assets growth YoY
0.9×
vs typical plan assets (national mean)

Boston Mutual Life 401(k) Plan for Salaried Employees's outsized position by total assets

Boston Mutual Life 401(k) Plan for Salaried Employees vs every filed plan by assets

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

$85,674,472 Top 10% higher than 90% 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

Boston Mutual Life 401(k) Plan for Salaried Employees 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. Boston Mutual Life 401(k) Plan for Salaried Employees sits mid-pack in the medium band (321 participants).

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 →

Plan-year Form 5500 strip

Filing strip 041106240 · Boston Mutual Life Insurance Co. PY 2023 · 401(k)

Boston Mutual Life 401(k) Plan for Salaried Employees · $86M · 321 · 90th

  • BOOK $86M
  • BOOK 321
  • BOOK 90th
  • BOOK 401(k)
  • BOOK near Basin Electric Power Cooperative Nd/Sd Union 401(k) Plan
  • BOOK ind #7542

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 Finance & Insurance retirement plans → · Plans in Massachusetts →

Boston Mutual Life 401(k) Plan for Salaried Employees in the asset neighbourhood

Universities Space Research Association 401(k) Retirement PlanUniversities Space Research …$86MArrow International, Inc. Profit Sharing Plan - 1Arrow International, Inc. Pr…$86MBasin Electric Power Cooperative Nd/Sd Union 401(k) PlanBasin Electric Power Coopera…$86MBoston Mutual Life 401(k) Plan for Salaried EmployeesBoston Mutual Life 401(k) Pl…$86MGraham Corporation Incentive Savings PlanGraham Corporation Incentive…$86M
End-of-year total assets ($M) among Boston Mutual Life 401(k) Plan for Salaried Employees and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

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.)

Sponsor-wide plan assets over time

All Boston Mutual Life Insurance Co. plans reported in each filing year

Latest sponsor-wide plan assets
$144M 26.04240417191386% vs 2022
2024 filing year
$110M$120M$130M$140M$150M 202220232024 $115M $144M ▲ +26.0%
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 Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Boston Mutual Life 401(k) Plan for Salaried Employees, Total assets ($B): 0.085674472 · Participants: 321Boston Mutual Life 401(k) Plan for Salaried EmployeesFidelity 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
Boston Mutual Life 401(k) Plan for Salaried Employees vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Boston Mutual Life 401(k) Plan for Salaried Employees side-by-side with 3 peers →

Boston Mutual Life 401(k) Plan for Salaried Employees's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Basin Electric Power Cooperative Nd/Sd Union 401(k) Plan in ND ($86M); by covered participants it is Sun City Summerlin Community Association, Inc. 401(k) Plan in NV (321 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (321 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 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).
Which 401(k) plans cover a similar participant headcount to Boston Mutual Life 401(k) Plan for Salaried Employees? ▼
Among 401(k) plans in other states, the closest by covered participants is Sun City Summerlin Community Association, Inc. 401(k) Plan in NV (321 participants, $4M 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 041106240.

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.