Employer · plans filed under one EIN
Massachusetts Mutual Life Insurance Company
Springfield, MA · Finance and insurance
Form 5500 information is as filed by the plan administrator with the Department of Labor and may be amended. Figures reflect the plan year shown, not current balances.
4 retirement plans with 100 or more participants file Form 5500 under Massachusetts Mutual Life Insurance Company's employer identification number (Springfield, Massachusetts). Their latest filings total 45,681 participant records and $6.88B in net assets.
The largest is MassMutual Thrift Plan, a 401(k) plan with 22,609 participants. A person can be counted in more than one plan, so the participant total is a count of records rather than of people.
Employer contributions across the plans were $63.8M and participant contributions $144M in the latest plan years; benefits paid were $571M. Schedule C compensation reported to service provider organisations totalled $2.9M.
Combined net assets moved from $2.73B in 2009 to $6.88B in 2024 (up 152%). Plan mergers and spin-offs show up here as steps in the series.
Plans
| Plan | Kind | Plan year | Participants | Net assets | Per participant | Employer / active | Sch. C compensation |
|---|---|---|---|---|---|---|---|
| MassMutual Thrift Plan | 401(k) plan | 2024 | 22,609 | $4.33B | $191,544 | $4,663 | $40K |
| MassMutual Pension Plan | cash balance pension plan | 2024 | 22,293 | $2.40B | $107,630 | — | $2.8M |
| Massachusetts Mutual Life Insurance Company Agent Pension Plan | money purchase plan | 2024 | 661 | $145M | $219,580 | — | $0 |
| MassMutual Puerto Rico Thrift Plan | 401(k) plan | 2024 | 118 | $4.4M | $37,617 | $952 | $0 |
| US median, plan year 2024: DC plans $53,102 per participant, $2,175 employer contribution per active participant; DB plans $86,221 and $10,244. | |||||||
Trend by plan year
| Plan year | Plans | Participant records | Net assets | Employer contributions | Participant contributions |
|---|---|---|---|---|---|
| 2024 | 4 | 45,681 | $6.88B | $63.8M | $144M |
| 2023 | 4 | 48,247 | $6.54B | $58.3M | $142M |
| 2022 | 4 | 49,509 | $6.14B | $60.3M | $133M |
| 2021 | 4 | 49,321 | $7.37B | $51.3M | $122M |
| 2020 | 4 | 50,243 | $7.02B | $141M | $132M |
| 2019 | 4 | 53,522 | $6.31B | $58.3M | $129M |
| 2018 | 4 | 52,980 | $5.39B | $54.0M | $121M |
| 2017 | 4 | 54,664 | $5.74B | $259M | $115M |
| 2016 | 4 | 54,723 | $4.89B | $137M | $102M |
| 2015 | 4 | 44,322 | $4.54B | $111M | $95.7M |
| 2014 | 4 | 42,560 | $4.63B | $90.7M | $90.0M |
| 2013 | 3 | 19,340 | $2.25B | $39.6M | $83.1M |
| 2012 | 3 | 38,789 | $3.75B | $103M | $68.8M |
| 2011 | 3 | 37,743 | $3.34B | $149M | $68.8M |
| 2010 | 3 | 37,744 | $3.19B | $171M | $68.1M |
| 2009 | 3 | 37,504 | $2.73B | $108M | $66.2M |
History of the plans listed above, in the years each filed the full Form 5500 with 100 or more participants. Plans that have since terminated are not included.
Service providers
| Organisation | Services reported | Plans | Compensation reported |
|---|---|---|---|
| Fid Inv Inst Ops Co. | Recordkeeping and information management | 1 | $1,242,503 |
| Aon Hewitt Invest Consulting Inc. | Investment advisory (plan) | 1 | $1,232,710 |
| State Street Bank and Trust Company | Legal; Custodial (securities) | 1 | $257,210 |
| Milliman | Actuarial | 1 | $97,500 |
| Willis Towers Watson US LLC | Consulting (general) | 1 | $40,200 |
Organisations paid $5,000 or more by any of these plans, from Schedule C. Individuals are not shown.
Questions and answers
How many retirement plans does Massachusetts Mutual Life Insurance Company have?
4 plans with 100 or more participants filed Form 5500 under its employer identification number for the latest plan years: MassMutual Thrift Plan, MassMutual Pension Plan, Massachusetts Mutual Life Insurance Company Agent Pension Plan and MassMutual Puerto Rico Thrift Plan. Smaller plans and plans filed under a subsidiary's number are not grouped here.
How much does Massachusetts Mutual Life Insurance Company contribute to its plans?
$63,841,806 in employer contributions across these plans in their latest plan years, about $2,551 per active participant record. Form 5500 reports totals and not the match or accrual formula.
Who provides services to these plans?
Schedule C filings name Fid Inv Inst Ops Co., Aon Hewitt Invest Consulting Inc., State Street Bank and Trust Company and Milliman and others. Only organisations paid $5,000 or more by a plan are listed on Schedule C.
Where does this come from?
Form 5500 annual reports filed with the Department of Labor's EFAST2 system, from the EBSA research files, with filings received through 24 Aug 2026. Figures are as filed and may be amended.
Provenance
Source: U.S. Department of Labor, Employee Benefits Security Administration, Form 5500 research files, public domain, with filings received through 24 Aug 2026. Plans are grouped by the sponsor's employer identification number exactly as filed; a company that files under several EINs appears as several employers. See the methodology and corrections.