401(k) · DOL Form 5500 · 2024

Arthur J. Gallagher (Illinios), LLC. 401(k) Plan

Data updated 2026-07-24

$3.9B
Total assets: 23,247
Participants: 100th
Percentile by assets: $167,678
Avg per participant

Official DOL plan name: Arthur J. Gallagher & Co. Employees Savings and Thrift Plan · Sponsored by Arthur J. Gallagher (Illinios), LLC. · Illinois · Finance & Insurance

$3.9B in assets, 23,247 participants

Arthur J. Gallagher (Illinios), LLC.'s Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reported $3.9B in total assets and 23,247 participants in its 2024 DOL Form 5500 filing, ranking in the 100th 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.

100th percentile by assets (of 116,472 plans)

Coverage in Illinois

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan covers 23,247 participants in Illinois, 30x the typical Illinois plan (state average ~768 per filing). Assets: $3.9B.

$3.9B
total plan assets (2024 EOY): 23,247
covered participants: 100th
percentile by assets (of 116,472 plans): $167,678
avg assets per participant

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan end-of-year assets rose from $3.2B in the plan year 2023 filing to $3.9B in the plan year 2024 filing.
Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reported net income rose from $455M in the plan year 2023 filing to $547M in the plan year 2024 filing.
Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reported participants rose from 20,416 in the plan year 2023 filing to 23,247 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Illinois

Industry

Finance & Insurance

Participants vs Illinois filers

In Illinois, the average filing covers about 768 participants across 5,440 plans. Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reports 23,247 participants - 30x that state average ($3.9B EOY assets).

Illinois filing particulars

Total Assets (Beginning of Year)	$3.2B
Net Assets (End of Year)	$3.9B
Net Income	$547M
Employer EIN	362481781
Plan Effective Date	1966-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Arthur J. Gallagher (Illinios), LLC.)

Total plan assets by year, all Arthur J. Gallagher (Illinios), LLC. plans on file

Year	Plans	Participants	Total Assets
2022	2	19,846	$3.0B
2023	2	21,466	$3.5B
2024	2	24,229	$4.2B

Nearby 401(k) Plans in Illinois

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

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan vs. nearby 401(k) plans in Illinois, assets vs. participants

Accenture United States 401(k) Match and Savings Plan $21.3B · 66,965
State Farm 401(k) Savings Plan $19.0B · 63,297
United Airlines Pilot Retirement Account Plan $16.8B · 16,659
Abbott Laboratories Stock Retirement Plan $15.8B · 38,229
Walgreens Retirement Savings Plan $14.5B · 233,635

Compare Arthur J. Gallagher & Co. Employees Savi… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Arthur J. Gallagher & Co. Employees Savings and Thrift Plan by total assets, not by location.

Firstenergy Corp. Savings Plan (OH) $3.9B · 12,582
The Caci Smart Plan (VA) $3.9B · 22,014
The 401(k) Plan (TX) $3.9B · 29,059
Kellogg Brown & Root, Inc. Retirement and Savings Plan (TX) $3.9B · 3,665

Frequently Asked Questions

How did Arthur J. Gallagher & Co. Employees Savings and Thrift Plan assets move in 2024? ▼

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan grew sharply - up 20.4% during 2024, from $3.2B to $3.9B. Reported net income was $547M.

How have Arthur J. Gallagher (Illinios), LLC. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Arthur J. Gallagher (Illinios), LLC.'s sponsor-wide assets grew 40.7%, from $3.0B to $4.2B.

Where does Arthur J. Gallagher & Co. Employees Savings and Thrift Plan rank by assets among Form 5500 filers? ▼

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan ranks in the 100th percentile by end-of-year assets among 116,472 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).

Which 401(k) plans are similar in size to Arthur J. Gallagher & Co. Employees Savings and Thrift Plan? ▼

Among 401(k) plans in other states, the closest by assets is Firstenergy Corp. Savings Plan in OH ($3.9B, 12,582 participants).

Next read for Arthur J. Gallagher & Co. Employees Savi…

Filing takeaways

Ways to act on Arthur J. Gallagher & Co. Employees Savings and Thrift Plan's numbers.

By total assets, Arthur J. Gallagher & Co. Employees Savings and Thrift Plan ranks among the largest 1% of all filed plans. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Illinois. Compare plans
Arthur J. Gallagher (Illinios), LLC.'s sponsor-wide assets have grown 40.7% 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 362481781.

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.