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US nonprofit · EIN 206371108 · Irvine, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 206371108) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe time served.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PF), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

William S and Nancy E Thompson Foundation

Donations deductible
Total assets
$79.1m
IRS master file
Directors and trustees
4
6.4 years on average
Left since last filing
0
no seats appear to have opened
Officers and senior staff
1
named in Part VII
Activity
T22
Philanthropy, voluntary services and grantmaking
Filings on record
5
latest 2024
Renewal outlook
Low current likelihood
score 6 of 100
Exempt since
2006
20 years ago
How am I connected?

William S and Nancy E Thompson Foundation's network

4 peoplei4 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (4). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

4 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record.
NameRole as filedSinceOn the board
Donald C ThompsonDirector2019
7 yrs
Nancy E ThompsonTrustee2019
7 yrs
William S ThompsonTrustee2019
7 yrs
William S Thompson IIITrustee2023
3 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Jennifer T LavensonCFOsince 2019

About

Legal name
William S and Nancy E Thompson Foundation
EIN
206371108
Address
5251 California Ave Ste 110, Irvine, CA, 92617-3075
State
California
Activity (NTEE)
T22 Philanthropy, voluntary services and grantmaking
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Philanthropy, Voluntarism & Grantmaking Foundations
Size band
9 (IRS master file code)
IRS ruling date
1 October 2006
Status
Code 01 (unconditional exemption)
Form 990 filings on record
5, latest 2024
IRS Publication 78
PF (contributions deductible)

Most connected

Longest observed on the filings

≥7years on the filingsDonald C Thompson
≥7years on the filingsNancy E Thompson
≥7years on the filingsWilliam S Thompson
≥3years on the filingsWilliam S Thompson III

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$0$637kDeficit $637k

As filed on the IRS Form 990. US dollars.