401(k) · DOL Form 5500 · 2023

William H. Gates III 401(k) Plan

Data updated 2026-08-25

$74M
Total assets Below avg plan size
162
Participants Small participant base
89th
Percentile by assets National rank
$458,414
Avg per participant High balance/head
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Official DOL plan name: Cascade Asset Management Company 401(k) Plan · Sponsored by William H. Gates III · Washington · Professional & Technical Services

$74M in assets, 162 participants

William H. Gates III's Cascade Asset Management Company 401(k) Plan reported $74M in total assets and 162 participants in its 2023 DOL Form 5500 filing, ranking in the 89th 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.

  • #18,359 in Professional & Technical Services (20,321 peers)

Coverage in Washington

Cascade Asset Management Company 401(k) Plan covers 162 participants in Washington, about 11% of the average Washington filer (state average ~1,476 per filing). Assets: $74M.

#18,359
in Professional & Technical Services (20,321 peers)
+29.6%
assets growth YoY
0.7×
vs typical plan assets (national mean)

Cascade Asset Management Company 401(k) Plan's outsized position by total assets

Cascade Asset Management Company 401(k) Plan vs every filed plan by assets

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

$74,263,000 Top 11% higher than 89% 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

Cascade Asset Management Company 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Cascade Asset Management Company 401(k) Plan sits mid-pack in the medium band (162 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Cascade Asset Management Company 401(k) Plan reported net income rose from -$8M in the plan year 2022 filing to $17M in the plan year 2023 filing.
  • Cascade Asset Management Company 401(k) Plan end-of-year assets rose from $57M in the plan year 2022 filing to $74M in the plan year 2023 filing.
  • Cascade Asset Management Company 401(k) Plan reported participants rose from 156 in the plan year 2022 filing to 162 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 911307932 · William H. Gates III PY 2023 · 401(k)

Cascade Asset Management Company 401(k) Plan · $74M · 162 · 89th

  • EBSA $74M
  • PART 162
  • TYPE 89th
  • NET 401(k)
  • BOOK near Southeastern Container, Inc. Retirement Savings Plan
  • VS-ST ind #18359

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 Washington →

Cascade Asset Management Company 401(k) Plan in the asset neighbourhood

United Federal Credit Union 401(k) PlanUnited Federal Credit Union …$74MCascade Asset Management Company 401(k) PlanCascade Asset Management Com…$74MSoutheastern Container, Inc. Retirement Savings PlanSoutheastern Container, Inc.…$74MSavings & Investment Plan for Employees of Disabled American VeteransSavings & Investment Plan fo…$74MPmc Global, Inc. and Subsidiaries Employees' Retirement Savings PlanPmc Global, Inc. and Subsidi…$74M
End-of-year total assets ($M) among Cascade Asset Management Company 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Washington filing particulars

Total Assets (Beginning of Year)$57M
Net Assets (End of Year)$74M
Net Income$17M
Employer EIN911307932
Plan Effective Date1997-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (William H. Gates III)

Sponsor-wide plan assets over time

All William H. Gates III plans reported in each filing year

Latest sponsor-wide plan assets
$92M 60.89185170656549% vs 2022
2024 filing year
$40M$60M$80M$100M 202220232024 $57.3M $92.2M ▲ +60.9%
Year Plans Participants Total Assets
2022 1 156 $57M
2023 1 162 $74M
2024 1 168 $92M

Nearby 401(k) Plans in Washington

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

Cascade Asset Management Company 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -20020406080 Total assets ($B) Participants Cascade Asset Management Company 401(k) Plan, Total assets ($B): 0.074263 · Participants: 162Cascade Asset Management Company 401(k) PlanThe Boeing Company 401(k) Retirement Plan, Total assets ($B): 72.246135158 · Participants: 128910The Boeing Company 401(k) Retirement PlanMicrosoft Corporation Savings Plus 401(k) Plan, Total assets ($B): 53.225853429 · Participants: 123296Microsoft Corporation Savings Plus 401(k) PlanCostco 401(k) Retirement Plan, Total assets ($B): 33.384845813 · Participants: 192744Costco 401(k) Retirement PlanT-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust, Total assets ($B): 8.338937292 · Participants: 71538T-Mobile USA, Inc. 401(k) Retirement Savings Plan & Trust401(k) Savings Plan, Total assets ($B): 8.118808679 · Participants: 87590401(k) Savings Plan
Cascade Asset Management Company 401(k) Plan vs. nearby 401(k) plans in Washington, assets vs. participants
Compare Cascade Asset Management Company 401(k) Plan side-by-side with 3 peers →

Cascade Asset Management Company 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Washington, the nearest 401(k) by assets is Southeastern Container, Inc. Retirement Savings Plan in NC ($74M); by covered participants it is Marine Bank, Etal Employees' 401(k) Profit Sharing Plan & Trust in IL (162 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (162 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 Cascade Asset Management Company 401(k) Plan assets move in 2023? ▼
Cascade Asset Management Company 401(k) Plan grew sharply - up 29.6% during 2023, from $57M to $74M. Reported net income was $17M.
How have William H. Gates III plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), William H. Gates III's sponsor-wide assets grew 60.9%, from $57M to $92M.
Where does Cascade Asset Management Company 401(k) Plan rank by assets among Form 5500 filers? ▼
Cascade Asset Management Company 401(k) Plan ranks in the 89th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Cascade Asset Management Company 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Southeastern Container, Inc. Retirement Savings Plan in NC ($74M, 473 participants).
Which 401(k) plans cover a similar participant headcount to Cascade Asset Management Company 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Marine Bank, Etal Employees' 401(k) Profit Sharing Plan & Trust in IL (162 participants, N/A 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 911307932.

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.