Defined Benefit (Pension) · DOL Form 5500 · 2023

Massmutual Pension Plan

Data updated 2026-05-15

$2.6B
Total assets
14,462
Participants
99th
Percentile by assets
$179,057
Avg per participant

Sponsored by Massachusetts Mutual Life Insurance Company · Massachusetts · Finance & Insurance

What the 2023 filing shows

Massmutual Pension Plan holds $2.6B for 14,462 participants - about $179,057 per participant, among the largest 1% of all filed plans, up 2.4% over the 2023 plan year.

$2.6B
total plan assets (2023 EOY)
14,462
covered participants
99th
percentile by assets (of 126,618 plans)
$179,057
avg assets per participant
Industry
Finance & Insurance

Defined Benefit (Pension) · DOL Form 5500 · 2023

What the Filing Says About Massmutual Pension Plan

Massmutual Pension Plan is a Defined Benefit (Pension) retirement plan sponsored by Massachusetts Mutual Life Insurance Company, headquartered in Massachusetts. According to the U.S. Department of Labor's 2023 Form 5500 filing, the plan reports $2.6B in total end-of-year assets and covers 14,462 participants across the Finance & Insurance industry. The sponsor's EIN on file with the U.S. Department of Labor is 041590850, and the plan has been effective since 1948-01-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets edged up modestly from $2.5B at the beginning of 2023 to $2.6B at year-end - up 2.4%. Net assets (after liabilities) closed the year at $2.5B, with reported net income of $13M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years Massachusetts Mutual Life Insurance Company has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $6.2B to $7.0B, a gain of 12.2%, while reported participants moved from 30,601 to 27,323 (-10.7%). The strongest year on file by total sponsor assets was 2024 at $7.0B; the softest was 2022 at $6.2B. Year-by-year, sponsor-wide filings show: 2022 - $6.2B in assets across 4 plans covering 30,601 participants; 2023 - $6.7B in assets across 4 plans covering 29,481 participants; 2024 - $7.0B in assets across 4 plans covering 27,323 participants.

By assets, Massmutual Pension Plan outranks 99% of the 126,618 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 26x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2023 Form 5500 with a reported end-of-year asset figure (126,618 plans), rank Massmutual Pension Plan against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.

Financial Summary (2023)

Total Assets (Beginning of Year)$2.5B
Total Assets (End of Year)$2.6B
Net Assets (End of Year)$2.5B
Net Income$13M
Plan TypeDefined Benefit (Pension)
Employer EIN041590850
Plan Effective Date1948-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Massachusetts Mutual Life Insurance Company)

Year Plans Participants Total Assets
2022 4 30,601 $6.2B
2023 4 29,481 $6.7B
2024 4 27,323 $7.0B

Nearby Defined Benefit (Pension) Plans in Massachusetts

Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.

Frequently Asked Questions

How much money is in the Massmutual Pension Plan?
As of the 2023 Form 5500 filing, Massmutual Pension Plan holds $2.6B in total assets with 14,462 participants. It is sponsored by Massachusetts Mutual Life Insurance Company.
What type of plan is Massmutual Pension Plan?
Massmutual Pension Plan is a Defined Benefit (Pension) plan. It has been effective since 1948-01-01. The plan is filed with the U.S. Department of Labor under EIN 041590850.
Who sponsors the Massmutual Pension Plan?
Massmutual Pension Plan is sponsored by Massachusetts Mutual Life Insurance Company, located in Massachusetts. The sponsor's EIN is 041590850 and the plan operates in the Finance & Insurance industry.
How did Massmutual Pension Plan perform in 2023?
Massmutual Pension Plan edged up modestly - up 2.4% during 2023, moving from $2.5B to $2.6B in total assets. Net income was $13M.

What this filing means

Ways to act on Massmutual Pension Plan's numbers.

  • By total assets, Massmutual Pension Plan ranks among the largest 1% of all filed plans. See the largest plans
  • Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in Massachusetts. Compare plans
  • Massachusetts Mutual Life Insurance Company's sponsor-wide assets have grown 12.2% since 2022 across 3 plan years on file. More Finance & Insurance plans
  • A Defined Benefit (Pension) plan works differently from other retirement plan types, understand the structural differences before comparing. Compare plan types

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 041590850.

Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.

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

Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-15.