401(k) · DOL Form 5500 · 2023

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

Data updated 2026-08-25

$3.2B
Total assets Very large vs avg
20,416
Participants Very large workforce
100th
Percentile by assets National rank
$158,619
Avg per participant Above avg balance/head
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Official DOL plan name: Arthur J. Gallagher & Co. Employees Savings and Thrift Plan · Sponsored by Arthur J. Gallagher (Illinios), LLC. · Illinois · Finance & Insurance

$3.2B in assets, 20,416 participants

Arthur J. Gallagher (Illinios), LLC.'s Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reported $3.2B in total assets and 20,416 participants in its 2023 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.

  • #8,788 in Finance & Insurance (8,869 peers)

Coverage in Illinois

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan covers 20,416 participants in Illinois, 26x the typical Illinois plan (state average ~779 per filing). Assets: $3.2B.

#8,788
in Finance & Insurance (8,869 peers)
+16.5%
assets growth YoY
32×
vs typical plan assets (national mean)

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan's outsized position by total assets

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan vs every filed plan by assets

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

$3,238,355,508 Highest reported value at or above every one 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

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan's mega-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Arthur J. Gallagher & Co. Employees Savings and Thrift Plan is a mega filing (20,416 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reported net income rose from -$350M in the plan year 2022 filing to $455M in the plan year 2023 filing.
  • Arthur J. Gallagher & Co. Employees Savings and Thrift Plan end-of-year assets rose from $2.8B in the plan year 2022 filing to $3.2B in the plan year 2023 filing.
  • Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reported participants rose from 18,665 in the plan year 2022 filing to 20,416 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 362481781 · Arthur J. Gallagher (Illinios), LLC. PY 2023 · 401(k)

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan · $3.2B · 20,416 · 100th

  • VS-ST $3.2B
  • VS-ST 20,416
  • VS-ST 100th
  • VS-ST 401(k)
  • VS-ST near Dupont Retirement Savings Plan
  • VS-ST ind #8788

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 Illinois →

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan in the asset neighbourhood

Micron Technology Inc. Retirement at Micron (Ram) PlanMicron Technology Inc. Retir…$3.2BWhirlpool 401(k) Retirement PlanWhirlpool 401(k) Retirement …$3.3BArthur J. Gallagher & Co. Employees Savings and Thrift PlanArthur J. Gallagher & Co. Em…$3.2BDupont Retirement Savings PlanDupont Retirement Savings Pl…$3.2BUniversal Health Services, Inc. Retirement Savings PlanUniversal Health Services, I…$3.2B
End-of-year total assets ($B) among Arthur J. Gallagher & Co. Employees Savings and Thrift Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Illinois filing particulars

Total Assets (Beginning of Year)$2.8B
Net Assets (End of Year)$3.2B
Net Income$455M
Employer EIN362481781
Plan Effective Date1966-01-01
Filing StatusFILING RECEIVED

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

Sponsor-wide plan assets over time

All Arthur J. Gallagher (Illinios), LLC. plans reported in each filing year

Latest sponsor-wide plan assets
$4.2B 40.72713223591857% vs 2022
2024 filing year
$2.5B$3B$3.5B$4B$4.5B 202220232024 $2.99B $4.21B ▲ +40.8%
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 Scatter plot of 6 data points. 050000100000150000200000250000 05101520 Total assets ($B) Participants Arthur J. Gallagher & Co. Employees Savings and Thrift Plan, Total assets ($B): 3.238355508 · Participants: 20416Arthur J. Gallagher & Co. Employees Savings and Thrift PlanAccenture United States 401(k) Match Savings Plan, Total assets ($B): 17.594548115 · Participants: 69974Accenture United States 401(k) Match Savings PlanState Farm 401(k) Savings Plan, Total assets ($B): 16.935002041 · Participants: 60246State Farm 401(k) Savings PlanAbbott Laboratories Stock Retirement Plan, Total assets ($B): 14.496191 · Participants: 38012Abbott Laboratories Stock Retirement PlanUnited Airlines Pilot Retirement Account Plan, Total assets ($B): 14.367975914 · Participants: 14959United Airlines Pilot Retirement Account PlanWalgreens Retirement Savings Plan, Total assets ($B): 13.444551767 · Participants: 235331Walgreens Retirement Savings Plan
Arthur J. Gallagher & Co. Employees Savings and Thrift Plan vs. nearby 401(k) plans in Illinois, assets vs. participants
Compare Arthur J. Gallagher & Co. Employees Savings and Thrift Plan side-by-side with 3 peers →

Scale composition for Arthur J. Gallagher & Co. Employees Savings and Thrift Plan

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan reports $3.2B in end-of-year assets across 20,416 participants (0.026% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.022% of 93,925,755 covered participants) - about $158,619 per participant (1.1x the national average assets-per-participant) . Net income for plan year 2023 was $455M.

This plan identity (EIN 362481781, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $2.8B to $3.9B (+40.2%) while covered participants moved from 18,665 to 23,247 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 18,665 $2.8B Open filing
2023 20,416 $3.2B This page
2024 · index core 23,247 $3.9B Open filing

The same sponsor also keeps 2 other index-core plans on PlainRetire:

Arthur J. Gallagher & Co. Employees Savings and Thrift Plan's out-of-state 401(k) peers by assets and headcount

Outside Illinois, the nearest 401(k) by assets is Dupont Retirement Savings Plan in DE ($3.2B); by covered participants it is Eighth District Electrical Pension Fund Annuity Plan in NV (20,426 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($3.2B here).

Similar participant headcount

Nearest other-state filings by covered participants (20,416 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 Arthur J. Gallagher & Co. Employees Savings and Thrift Plan assets move in 2023? ▼
Arthur J. Gallagher & Co. Employees Savings and Thrift Plan grew sharply - up 16.5% during 2023, from $2.8B to $3.2B. Reported net income was $455M.
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 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 Arthur J. Gallagher & Co. Employees Savings and Thrift Plan? ▼
Among 401(k) plans in other states, the closest by assets is Dupont Retirement Savings Plan in DE ($3.2B, 9,918 participants).
Which 401(k) plans cover a similar participant headcount to Arthur J. Gallagher & Co. Employees Savings and Thrift Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Eighth District Electrical Pension Fund Annuity Plan in NV (20,426 participants, $981M 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 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.