401(k) · DOL Form 5500 · 2023

The Hanover Insurance Company 401(k) Plan

Data updated 2026-08-25

$1.2B
Total assets Very large vs avg
4,626
Participants Above avg headcount
99th
Percentile by assets National rank
$255,400
Avg per participant Above avg balance/head
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Official DOL plan name: The Hanover Insurance Group Retirement Savings Plan · Sponsored by The Hanover Insurance Company · Massachusetts · Finance & Insurance

$1.2B in assets, 4,626 participants

The Hanover Insurance Company's The Hanover Insurance Group Retirement Savings Plan reported $1.2B in total assets and 4,626 participants in its 2023 DOL Form 5500 filing, ranking in the 99th 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.

  • #8,669 in Finance & Insurance (8,869 peers)

Coverage in Massachusetts

The Hanover Insurance Group Retirement Savings Plan covers 4,626 participants in Massachusetts, 7.0x the typical Massachusetts plan (state average ~659 per filing). Assets: $1.2B.

#8,669
in Finance & Insurance (8,869 peers)
+14.5%
assets growth YoY
12×
vs typical plan assets (national mean)

The Hanover Insurance Group Retirement Savings Plan's outsized position by total assets

The Hanover Insurance Group Retirement Savings Plan vs every filed plan by assets

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

$1,181,481,866 Top 1% higher than 99% 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

The Hanover Insurance Group Retirement Savings Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. The Hanover Insurance Group Retirement Savings Plan lands in the large band (4,626 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • The Hanover Insurance Group Retirement Savings Plan reported net income rose from -$215M in the plan year 2022 filing to $150M in the plan year 2023 filing.
  • The Hanover Insurance Group Retirement Savings Plan end-of-year assets rose from $1.0B in the plan year 2022 filing to $1.2B in the plan year 2023 filing.
  • The Hanover Insurance Group Retirement Savings Plan reported participants rose from 4,373 in the plan year 2022 filing to 4,626 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 135129825 · The Hanover Insurance Company PY 2023 · 401(k)

The Hanover Insurance Group Retirement Savings Plan · $1.2B · 4,626 · 99th

  • ASSETS $1.2B
  • PCT 4,626
  • EIN 99th
  • RANK 401(k)
  • PHOTO near Trihealth 401(k) Retirement Savings Plan
  • IND ind #8669

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 →

The Hanover Insurance Group Retirement Savings Plan in the asset neighbourhood

The Hanover Insurance Group Retirement Savings PlanThe Hanover Insurance Group …$1.2BTrihealth 401(k) Retirement Savings PlanTrihealth 401(k) Retirement …$1.2BD.R. Horton, Inc. Profit Sharing Plus PlanD.R. Horton, Inc. Profit Sha…$1.2BErie Insurance Group Employee Savings PlanErie Insurance Group Employe…$1.2BBaker Tilly Advisory Group Parent, LPBaker Tilly Advisory Group P…$1.2B
End-of-year total assets ($B) among The Hanover Insurance Group Retirement Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$1.0B
Net Assets (End of Year)$1.2B
Net Income$150M
Employer EIN135129825
Plan Effective Date1961-11-22
Filing StatusFILING RECEIVED

Sponsor Plan History (The Hanover Insurance Company)

Sponsor-wide plan assets over time

All The Hanover Insurance Company plans reported in each filing year

Latest sponsor-wide plan assets
$1.6B 17.184837823788246% vs 2022
2024 filing year
$1.3B$1.4B$1.5B$1.6B$1.7B 202220232024 $1.4B $1.64B ▲ +17.1%
Year Plans Participants Total Assets
2022 2 5,105 $1.4B
2023 2 5,303 $1.5B
2024 2 5,274 $1.6B

Nearby 401(k) Plans in Massachusetts

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

The Hanover Insurance Group Retirement Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. 020000400006000080000 -10010203040 Total assets ($B) Participants The Hanover Insurance Group Retirement Savings Plan, Total assets ($B): 1.181481866 · Participants: 4626The Hanover Insurance Group Retirement Savings PlanFidelity 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
The Hanover Insurance Group Retirement Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare The Hanover Insurance Group Retirement Savings Plan side-by-side with 3 peers →

The Hanover Insurance Group Retirement Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Trihealth 401(k) Retirement Savings Plan in OH ($1.2B); by covered participants it is Take-Two Interactive Software, Inc. 401(k) Plan in NY (4,623 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($1.2B here).

Similar participant headcount

Nearest other-state filings by covered participants (4,626 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 The Hanover Insurance Group Retirement Savings Plan assets move in 2023? ▼
The Hanover Insurance Group Retirement Savings Plan grew at a solid clip - up 14.5% during 2023, from $1.0B to $1.2B. Reported net income was $150M.
How have The Hanover Insurance Company plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), The Hanover Insurance Company's sponsor-wide assets grew 17.2%, from $1.4B to $1.6B.
Where does The Hanover Insurance Group Retirement Savings Plan rank by assets among Form 5500 filers? ▼
The Hanover Insurance Group Retirement Savings Plan ranks in the 99th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to The Hanover Insurance Group Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Trihealth 401(k) Retirement Savings Plan in OH ($1.2B, 11,706 participants).
Which 401(k) plans cover a similar participant headcount to The Hanover Insurance Group Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Take-Two Interactive Software, Inc. 401(k) Plan in NY (4,623 participants, $629M 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 135129825.

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.