401(k) · DOL Form 5500 · 2023

Willscot Mobile Mini Holdings Corp 401(k) Plan

Data updated 2026-08-25

$246M
Total assets Near avg plan size
4,097
Participants Above avg headcount
96th
Percentile by assets National rank
$60,069
Avg per participant Low balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Willscot Mobile Mini 401(k) Plan · Sponsored by Willscot Mobile Mini Holdings Corp · Arizona · Real Estate

$246M in assets, 4,097 participants

Willscot Mobile Mini Holdings Corp's Willscot Mobile Mini 401(k) Plan reported $246M in total assets and 4,097 participants in its 2023 DOL Form 5500 filing, ranking in the 96th 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.

  • #4,685 in Real Estate (4,727 peers)

Coverage in Arizona

Willscot Mobile Mini 401(k) Plan covers 4,097 participants in Arizona, 7.3x the typical Arizona plan (state average ~564 per filing). Assets: $246M.

#4,685
in Real Estate (4,727 peers)
+24.1%
assets growth YoY
2.5×
vs typical plan assets (national mean)

Willscot Mobile Mini 401(k) Plan's outsized position by total assets

Willscot Mobile Mini 401(k) Plan vs every filed plan by assets

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

$246,101,761 Top 4% higher than 96% 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

Willscot Mobile Mini 401(k) 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. Willscot Mobile Mini 401(k) Plan lands in the large band (4,097 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Willscot Mobile Mini 401(k) Plan reported net income rose from -$19M in the plan year 2022 filing to $48M in the plan year 2023 filing.
  • Willscot Mobile Mini 401(k) Plan end-of-year assets rose from $198M in the plan year 2022 filing to $246M in the plan year 2023 filing.
  • Willscot Mobile Mini 401(k) Plan reported participants rose from 3,351 in the plan year 2022 filing to 4,097 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 520665775 · Willscot Mobile Mini Holdings Corp PY 2023 · 401(k)

Willscot Mobile Mini 401(k) Plan · $246M · 4,097 · 96th

  • EIN $246M
  • EIN 4,097
  • EIN 96th
  • EIN 401(k)
  • EIN near Misa Consolidated 401(k) Plan
  • EIN ind #4685

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 Real Estate retirement plans → · Plans in Arizona →

Willscot Mobile Mini 401(k) Plan in the asset neighbourhood

Ses Americom Retirement and Savings PlanSes Americom Retirement and …$246MWillscot Mobile Mini 401(k) PlanWillscot Mobile Mini 401(k) …$246MMisa Consolidated 401(k) Plan$246MWilliams Mullen Clark & Dobbins 401(k) Retirement PlanWilliams Mullen Clark & Dobb…$246MHorace Mann 401(k) Plan$246M
End-of-year total assets ($M) among Willscot Mobile Mini 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Arizona filing particulars

Total Assets (Beginning of Year)$198M
Net Assets (End of Year)$246M
Net Income$48M
Employer EIN520665775
Plan Effective Date1993-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Willscot Mobile Mini Holdings Corp)

Sponsor-wide plan assets over time

All Willscot Mobile Mini Holdings Corp plans reported in each filing year

Latest sponsor-wide plan assets
$285M 43.46084893566079% vs 2022
2024 filing year
$150M$200M$250M$300M 202220232024 $198M $285M ▲ +43.5%
Year Plans Participants Total Assets
2022 1 3,351 $198M
2023 1 4,097 $246M
2024 1 4,627 $285M

Nearby 401(k) Plans in Arizona

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

Willscot Mobile Mini 401(k) Plan vs. nearby 401(k) plans in Arizona, assets vs. participants Scatter plot of 6 data points. 0200004000060000 -20246 Total assets ($B) Participants Willscot Mobile Mini 401(k) Plan, Total assets ($B): 0.246101761 · Participants: 4097Willscot Mobile Mini 401(k) PlanBechtel Trust & Thrift Plan, Total assets ($B): 5.691074806 · Participants: 7448Bechtel Trust & Thrift PlanBanner Health Employees 401(k) Plan, Total assets ($B): 4.270882725 · Participants: 52452Banner Health Employees 401(k) PlanRepublic Services, Inc. 401(k) Plan, Total assets ($B): 2.379834679 · Participants: 28131Republic Services, Inc. 401(k) PlanFreeport-Mcmoran Inc. Employee Capital Accumulation Program, Total assets ($B): 2.323111586 · Participants: 13105Freeport-Mcmoran Inc. Employee Capital Accumulation ProgramStantec 401(k) Plan, Total assets ($B): 2.021683156 · Participants: 10719Stantec 401(k) Plan
Willscot Mobile Mini 401(k) Plan vs. nearby 401(k) plans in Arizona, assets vs. participants
Compare Willscot Mobile Mini 401(k) Plan side-by-side with 3 peers →

Willscot Mobile Mini 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Arizona, the nearest 401(k) by assets is Misa Consolidated 401(k) Plan in NY ($246M); by covered participants it is Trident Seafoods Corporation 401(k) Retirement Plan in WA (4,098 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($246M here).

Similar participant headcount

Nearest other-state filings by covered participants (4,097 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 Willscot Mobile Mini 401(k) Plan assets move in 2023? ▼
Willscot Mobile Mini 401(k) Plan grew sharply - up 24.1% during 2023, from $198M to $246M. Reported net income was $48M.
How have Willscot Mobile Mini Holdings Corp plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Willscot Mobile Mini Holdings Corp's sponsor-wide assets grew 43.5%, from $198M to $285M.
Where does Willscot Mobile Mini 401(k) Plan rank by assets among Form 5500 filers? ▼
Willscot Mobile Mini 401(k) Plan ranks in the 96th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to Willscot Mobile Mini 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Misa Consolidated 401(k) Plan in NY ($246M, 2,344 participants).
Which 401(k) plans cover a similar participant headcount to Willscot Mobile Mini 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Trident Seafoods Corporation 401(k) Retirement Plan in WA (4,098 participants, $236M 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 520665775.

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.