401(k) · DOL Form 5500 · 2023

Mayer Brown LLP 401(k) Plan

Data updated 2026-08-25

$1.1B
Total assets Very large vs avg
2,124
Participants Near avg headcount
99th
Percentile by assets National rank
$531,926
Avg per participant High balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Mayer Brown LLP USA Savings Plan · Sponsored by Mayer Brown LLP · Illinois · Professional & Technical Services

$1.1B in assets, 2,124 participants

Mayer Brown LLP's Mayer Brown LLP USA Savings Plan reported $1.1B in total assets and 2,124 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.

  • #20,161 in Professional & Technical Services (20,321 peers)

Coverage in Illinois

Mayer Brown LLP USA Savings Plan covers 2,124 participants in Illinois, 2.7x the typical Illinois plan (state average ~779 per filing). Assets: $1.1B.

#20,161
in Professional & Technical Services (20,321 peers)
+16.1%
assets growth YoY
11×
vs typical plan assets (national mean)

Mayer Brown LLP USA Savings Plan's outsized position by total assets

Mayer Brown LLP USA Savings Plan vs every filed plan by assets

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

$1,129,811,338 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

Mayer Brown LLP USA 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. Mayer Brown LLP USA Savings Plan lands in the large band (2,124 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Mayer Brown LLP USA Savings Plan reported net income rose from -$185M in the plan year 2022 filing to $157M in the plan year 2023 filing.
  • Mayer Brown LLP USA Savings Plan end-of-year assets rose from $973M in the plan year 2022 filing to $1.1B in the plan year 2023 filing.
  • Mayer Brown LLP USA Savings Plan reported participants rose from 1,991 in the plan year 2022 filing to 2,124 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 361447220 · Mayer Brown LLP PY 2023 · 401(k)

Mayer Brown LLP USA Savings Plan · $1.1B · 2,124 · 99th

  • EBSA $1.1B
  • PART 2,124
  • TYPE 99th
  • NET 401(k)
  • BOOK near The Standard 401(k) Plan
  • VS-ST ind #20161

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 Professional & Technical Services retirement plans → · Plans in Illinois →

Mayer Brown LLP USA Savings Plan in the asset neighbourhood

Mayer Brown LLP USA Savings PlanMayer Brown LLP USA Savings …$1.1BThe Standard 401(k) Plan$1.1BBluecross Blueshield of Tennessee Employee Retirement Savings ProgramBluecross Blueshield of Tenn…$1.1BToyota Industries North America Group Associates' 401(k) Retirement PlanToyota Industries North Amer…$1.1BGrifols Employee Retirement Savings PlanGrifols Employee Retirement …$1.1B
End-of-year total assets ($B) among Mayer Brown LLP USA Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Illinois filing particulars

Total Assets (Beginning of Year)$973M
Net Assets (End of Year)$1.1B
Net Income$157M
Employer EIN361447220
Plan Effective Date1985-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mayer Brown LLP)

Sponsor-wide plan assets over time

All Mayer Brown LLP plans reported in each filing year

Latest sponsor-wide plan assets
$1.5B 28.79757869793471% vs 2022
2024 filing year
$1.1B$1.2B$1.3B$1.4B$1.5B$1.6B 202220232024 $1.14B $1.47B ▲ +28.9%
Year Plans Participants Total Assets
2022 2 2,274 $1.1B
2023 2 2,417 $1.3B
2024 2 2,452 $1.5B

Nearby 401(k) Plans in Illinois

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

Mayer Brown LLP USA Savings Plan vs. nearby 401(k) plans in Illinois, assets vs. participants Scatter plot of 6 data points. -1000000100000200000300000 05101520 Total assets ($B) Participants Mayer Brown LLP USA Savings Plan, Total assets ($B): 1.129811338 · Participants: 2124Mayer Brown LLP USA Savings 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
Mayer Brown LLP USA Savings Plan vs. nearby 401(k) plans in Illinois, assets vs. participants
Compare Mayer Brown LLP USA Savings Plan side-by-side with 3 peers →

Mayer Brown LLP USA Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Illinois, the nearest 401(k) by assets is The Standard 401(k) Plan in OR ($1.1B); by covered participants it is Vystar Credit Union 401(k) Plan in FL (2,123 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (2,124 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 Mayer Brown LLP USA Savings Plan assets move in 2023? ▼
Mayer Brown LLP USA Savings Plan grew sharply - up 16.1% during 2023, from $973M to $1.1B. Reported net income was $157M.
How have Mayer Brown LLP plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mayer Brown LLP's sponsor-wide assets grew 28.8%, from $1.1B to $1.5B.
Where does Mayer Brown LLP USA Savings Plan rank by assets among Form 5500 filers? ▼
Mayer Brown LLP USA 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 Mayer Brown LLP USA Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is The Standard 401(k) Plan in OR ($1.1B, 3,614 participants).
Which 401(k) plans cover a similar participant headcount to Mayer Brown LLP USA Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Vystar Credit Union 401(k) Plan in FL (2,123 participants, $147M 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 361447220.

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.