Employer · plans filed under one EIN
Liberty Mutual Group Inc.
Boston, 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.
Liberty Mutual Group Inc., based in Boston, Massachusetts, sponsors 2 retirement plans with 100 or more participants: 1 defined contribution and 1 defined benefit. Together they reported 120,746 participant records and $17.0B in net assets.
The largest is Liberty Mutual Retirement Benefit Plan, a cash balance pension plan with 71,087 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 $135M and participant contributions $393M in the latest plan years; benefits paid were $1.53B. Schedule C compensation reported to service provider organisations totalled $28.0M.
Combined net assets moved from $7.74B in 2009 to $17.0B in 2024 (up 120%). 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 |
|---|---|---|---|---|---|---|---|
| Liberty Mutual Retirement Benefit Plan | cash balance pension plan | 2024 | 71,087 | $6.25B | $87,898 | — | $16.2M |
| Liberty Mutual 401(k) Plan | 401(k) plan | 2024 | 49,659 | $10.8B | $216,904 | $4,269 | $11.7M |
| 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 | 2 | 120,746 | $17.0B | $135M | $393M |
| 2023 | 2 | 134,421 | $16.6B | $276M | $404M |
| 2022 | 2 | 141,070 | $15.3B | $128M | $361M |
| 2021 | 2 | 130,065 | $19.1B | $124M | $352M |
| 2020 | 2 | 128,043 | $19.2B | $123M | $336M |
| 2019 | 2 | 130,418 | $17.1B | $123M | $337M |
| 2018 | 2 | 129,754 | $14.3B | $207M | $310M |
| 2017 | 2 | 141,830 | $15.5B | $96.6M | $306M |
| 2016 | 2 | 140,008 | $13.8B | $494M | $299M |
| 2015 | 2 | 141,795 | $13.2B | $926M | $282M |
| 2014 | 2 | 131,567 | $12.7B | $426M | $266M |
| 2013 | 2 | 126,092 | $12.0B | $554M | $257M |
| 2012 | 2 | 123,982 | $10.6B | $714M | $241M |
| 2011 | 2 | 127,499 | $9.25B | $728M | $229M |
| 2010 | 2 | 126,511 | $8.75B | $404M | $224M |
| 2009 | 2 | 126,132 | $7.74B | $346M | $216M |
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; Consulting (general) | 2 | $6,994,779 |
| Goldman Sachs Asset Management | Investment management | 1 | $6,173,483 |
| BlackRock Inst Trust Company, N.A. | Investment management; Trustee (bank, trust company, or similar financial institution); Trustee (discretionary) | 2 | $2,511,987 |
| Fid MGMT Trust Co. | Trustee (bank, trust company, or similar financial institution) | 1 | $2,504,418 |
| Strategic Advisors, Inc. | Investment advisory (plan) | 1 | $1,701,824 |
| Eaton Vance | Investment management | 1 | $1,473,949 |
| Pacific Investment Management Co. | Investment management | 1 | $1,394,066 |
| Aon Consulting | Recordkeeping and information management | 1 | $1,038,250 |
| Baillie Gifford Overseas Limited | Investment management | 1 | $1,027,093 |
| William Blair & Co. | Investment management | 1 | $901,200 |
| Cardinal Capital MGMT, LLC | Investment management | 1 | $630,847 |
| The Bank of New York Mellon | Custodial (other than securities); Trustee (bank, trust company, or similar financial institution); Other services | 1 | $589,012 |
| Rocaton | Consulting (general) | 1 | $371,539 |
| Deloitte Tax LLP | Actuarial; Consulting (general) | 1 | $329,529 |
| Galliard Capital Management, Inc. | Investment management | 1 | $239,714 |
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 Liberty Mutual Group Inc. have?
2 plans with 100 or more participants filed Form 5500 under its employer identification number for the latest plan years: Liberty Mutual Retirement Benefit Plan and Liberty Mutual 401(k) Plan. Smaller plans and plans filed under a subsidiary's number are not grouped here.
How much does Liberty Mutual Group Inc. contribute to its plans?
$134,727,421 in employer contributions across these plans in their latest plan years, about $2,127 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., Goldman Sachs Asset Management, BlackRock Inst Trust Company, N.A. and Fid MGMT Trust Co. 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.