IRA-Based · DOL Form 5500 · 2023

The William and Flora Hewlett Foundation 403(b) Plan

Data updated 2026-05-15

$94M
Total assets
123
Participants
91st
Percentile by assets
$767,164
Avg per participant

Sponsored by The William and Flora Hewlett Foundation · California · Other Services

What the 2023 filing shows

The William and Flora Hewlett Foundation 403(b) Plan holds $94M for 123 participants - about $767,164 per participant, in the top 10% of all filed plans by assets, up 21.0% over the 2023 plan year.

$94M
total plan assets (2023 EOY)
123
covered participants
91st
percentile by assets (of 126,618 plans)
$767,164
avg assets per participant
State
Industry
Other Services

IRA-Based · DOL Form 5500 · 2023

What the Filing Says About The William and Flora Hewlett Foundation 403(b) Plan

The William and Flora Hewlett Foundation 403(b) Plan is an IRA-Based retirement plan sponsored by The William and Flora Hewlett Foundation, headquartered in California. According to the U.S. Department of Labor's 2023 Form 5500 filing, the plan reports $94M in total end-of-year assets and covers 123 participants across the Other Services industry. The sponsor's EIN on file with the U.S. Department of Labor is 941655673, and the plan has been effective since 1998-01-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets grew sharply from $78M at the beginning of 2023 to $94M at year-end - up 21.0%. Net assets (after liabilities) closed the year at $94M, with reported net income of $16M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years The William and Flora Hewlett Foundation has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $78M to $111M, a gain of 42.5%, while reported participants moved from 119 to 133 (+11.8%). The strongest year on file by total sponsor assets was 2024 at $111M; the softest was 2022 at $78M. Year-by-year, sponsor-wide filings show: 2022 - $78M in assets across 1 plan covering 119 participants; 2023 - $94M in assets across 1 plan covering 123 participants; 2024 - $111M in assets across 1 plan covering 133 participants.

By assets, The William and Flora Hewlett Foundation 403(b) Plan outranks 91% of the 126,618 plans that filed a Form 5500 for the 2023 plan year, and holds roughly 0.9x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2023 Form 5500 with a reported end-of-year asset figure (126,618 plans), rank The William and Flora Hewlett Foundation 403(b) Plan against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.

Financial Summary (2023)

Total Assets (Beginning of Year)$78M
Total Assets (End of Year)$94M
Net Assets (End of Year)$94M
Net Income$16M
Plan TypeIRA-Based
Employer EIN941655673
Plan Effective Date1998-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (The William and Flora Hewlett Foundation)

Year Plans Participants Total Assets
2022 1 119 $78M
2023 1 123 $94M
2024 1 133 $111M

Nearby IRA-Based Plans in California

Peer IRA-Based plans, same state, same plan type, ranked by total assets.

Frequently Asked Questions

How much money is in the The William and Flora Hewlett Foundation 403(b) Plan?
As of the 2023 Form 5500 filing, The William and Flora Hewlett Foundation 403(b) Plan holds $94M in total assets with 123 participants. It is sponsored by The William and Flora Hewlett Foundation.
What type of plan is The William and Flora Hewlett Foundation 403(b) Plan?
The William and Flora Hewlett Foundation 403(b) Plan is an IRA-Based plan. It has been effective since 1998-01-01. The plan is filed with the U.S. Department of Labor under EIN 941655673.
Who sponsors the The William and Flora Hewlett Foundation 403(b) Plan?
The William and Flora Hewlett Foundation 403(b) Plan is sponsored by The William and Flora Hewlett Foundation, located in California. The sponsor's EIN is 941655673 and the plan operates in the Other Services industry.
How did The William and Flora Hewlett Foundation 403(b) Plan perform in 2023?
The William and Flora Hewlett Foundation 403(b) Plan grew sharply - up 21.0% during 2023, moving from $78M to $94M in total assets. Net income was $16M.

What this filing means

Ways to act on The William and Flora Hewlett Foundation 403(b) Plan's numbers.

  • By total assets, The William and Flora Hewlett Foundation 403(b) Plan ranks in the top 10% of all filed plans by assets. See the largest plans
  • Compare it side-by-side against 3 similar IRA-Based plans in California. Compare plans
  • The William and Flora Hewlett Foundation's sponsor-wide assets have grown 42.5% since 2022 across 3 plan years on file. More Other Services plans
  • An IRA-Based plan works differently from other retirement plan types, understand the structural differences before comparing. Compare plan types

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 941655673.

Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.

Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-15.