Defined Benefit (Pension) · DOL Form 5500 · 2024

The Andover Companies Pension Plan

Data updated 2026-07-24

$459M
Total assets: 283
Participants: 97th
Percentile by assets: $1.6M
Avg per participant

Official DOL plan name: Merrimack Mutual Fire Insurance Company Retirement Plan · Sponsored by The Andover Companies · Massachusetts · Finance & Insurance

$459M in assets, 283 participants

The Andover Companies's Merrimack Mutual Fire Insurance Company Retirement Plan reported $459M in total assets and 283 participants in its 2024 DOL Form 5500 filing, ranking in the 97th 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.

97th percentile by assets (of 116,472 plans)

Coverage in Massachusetts

Merrimack Mutual Fire Insurance Company Retirement Plan covers 283 participants in Massachusetts, about 44% of the average Massachusetts filer (state average ~641 per filing). Assets: $459M.

$459M
total plan assets (2024 EOY): 283
covered participants: 97th
percentile by assets (of 116,472 plans): $1.6M
avg assets per participant

Merrimack Mutual Fire Insurance Company Retirement Plan reported net income rose from $26M in the plan year 2023 filing to $69M in the plan year 2024 filing.
Merrimack Mutual Fire Insurance Company Retirement Plan end-of-year assets rose from $390M in the plan year 2023 filing to $459M in the plan year 2024 filing.
Merrimack Mutual Fire Insurance Company Retirement Plan reported participants rose from 259 in the plan year 2023 filing to 283 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Massachusetts

Industry

Finance & Insurance

Participants vs Massachusetts filers

In Massachusetts, the average filing covers about 641 participants across 3,941 plans. Merrimack Mutual Fire Insurance Company Retirement Plan reports 283 participants - about 44% of that state average ($459M EOY assets).

Massachusetts filing particulars

Total Assets (Beginning of Year)	$390M
Net Assets (End of Year)	$459M
Net Income	$69M
Employer EIN	041614490
Plan Effective Date	1944-04-18
Filing Status	FILING RECEIVED

Sponsor Plan History (The Andover Companies)

Total plan assets by year, all The Andover Companies plans on file

Year	Plans	Participants	Total Assets
2022	2	456	$421M
2023	2	524	$460M
2024	2	601	$540M

Nearby Defined Benefit (Pension) Plans in Massachusetts

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

Merrimack Mutual Fire Insurance Company Retirement Plan vs. nearby Defined Benefit (Pension) plans in Massachusetts, assets vs. participants

Liberty Mutual Retirement Benefit Plan $6.3B · 34,910
Massachusetts Institute of Technology Basic Retirement Plan $5.9B · 12,533
N. Atlantic States Carp. Pension Fund $5.1B · 16,946
N. Atlantic States Carp. Guaranteed Annuity Fund $3.8B · 10,943
Massachusetts Laborers' Pension Fund $2.5B · 10,203

Compare Merrimack Mutual Fire Insurance Company … side-by-side with 3 peers →

Similar-Sized Defined Benefit (Pension) Plans Nationally

Defined Benefit (Pension) plans in other states closest to Merrimack Mutual Fire Insurance Company Retirement Plan by total assets, not by location.

St. Lukes Health Network Pension Plan (PA) $459M · 2,221
Moody's Corporation Retirement Account (NY) $460M · 546
Pension Plan for All Eligible Employees of Crane (CT) $459M · 516
Alabama Farmers Federation and Affiliated Companies Retirement Plan (AL) $460M · 871

Frequently Asked Questions

How did Merrimack Mutual Fire Insurance Company Retirement Plan assets move in 2024? ▼

Merrimack Mutual Fire Insurance Company Retirement Plan grew sharply - up 17.7% during 2024, from $390M to $459M. Reported net income was $69M.

How have The Andover Companies plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), The Andover Companies's sponsor-wide assets grew 28.1%, from $421M to $540M.

Where does Merrimack Mutual Fire Insurance Company Retirement Plan rank by assets among Form 5500 filers? ▼

Merrimack Mutual Fire Insurance Company Retirement Plan ranks in the 97th percentile by end-of-year assets among 116,472 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).

Which Defined Benefit (Pension) plans are similar in size to Merrimack Mutual Fire Insurance Company Retirement Plan? ▼

Among Defined Benefit (Pension) plans in other states, the closest by assets is St. Lukes Health Network Pension Plan in PA ($459M, 2,221 participants).

Next read for Merrimack Mutual Fire Insurance Company …

Filing takeaways

Ways to act on Merrimack Mutual Fire Insurance Company Retirement Plan's numbers.

By total assets, Merrimack Mutual Fire Insurance Company Retirement Plan ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in Massachusetts. Compare plans
The Andover Companies's sponsor-wide assets have grown 28.1% since 2022 across 3 plan years on file. More Finance & Insurance plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 041614490.

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.