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Nonprofit · EIN 94-3362163

THE DUFFIELD FAMILY FOUNDATION

Also known as MADDIES FUND

Tax-exempt · PLEASANTON, CA 94588

Financials

$15.2M$16.2M2022$12.5M$24.9M2023$17.2M$18.3M2024
Revenue Expenses · by fiscal year end
Financials of THE DUFFIELD FAMILY FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990-PF$17,231,773$18,289,043-$1,057,270$277,555,479$22,366,039$255,189,440
June 30, 2024990-PF$12,487,603$24,855,367-$12,367,764$266,741,354$24,416,578$242,324,776
June 30, 2023990-PF$15,164,945$16,187,369-$1,022,424$259,973,566$18,418,952$241,554,614
Financial details: 990-PF for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$332
Dividends
$7,985,612
Interest
$20,654
Net gain from sales of assets
$9,105,308
Other income
$119,867

Expenses

Grants and similar amounts paid
$11,000,947
Compensation of officers, directors and key employees
$883,861
Salaries, compensation and benefits (total)
$2,307,512
Disbursements for charitable purposes
$19,294,362
Excise tax on investment income
$219,417

Balance sheet and other

Total assets, start of year
$266,741,354
Total assets, end of year
$277,555,479
Total liabilities, end of year
$22,366,039
Net assets, end of year
$255,189,440
Fair market value of assets
$277,555,479
Qualifying distributions
$19,423,612
Net investment income
$17,195,102

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-PF for the year ended June 30, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
MARY IPPOLITI-SMITH
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
EXECUTIVE LEADER40$326,566$44,027
SHEILA SEGURSON
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF SHELTER
Highest-paid employee
40$232,987$37,719
LISA WARD
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF EDUCATIO
Highest-paid employee
40$210,224$51,691
AMY D ZEIFANG
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
CHAIRMAN30$206,920$67,293
VALERIE STOLTENBERG
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
VP FINANCE30$189,040$14,618
ROSEMARIE HARNESS
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR ACCESS TO C
Highest-paid employee
40$176,000$27,561
MICHELLE THOMPSON
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF OPERATIO
Highest-paid employee
40$169,329$25,749
SHARON FLETCHER
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF MKTG & C
Highest-paid employee
40$169,328$59,316
LAURIE PEEK
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
SECRETARY20$138,226$9,606
STEVE HILL
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
TREASURER2$21,440$0
MICHAEL DUFFIELD
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
BOARD MEMBER1$0$0
990-PF for the year ended June 30, 2024: 11 people
NameTitleHours / weekCompensationOther / benefits
MARY IPPOLITI-SMITH
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
EXECUTIVE LEADER40$341,625$41,757
SHEILA SEGURSON
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF SHELTER
Highest-paid employee
40$225,012$34,896
AMY D ZEIFANG
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
CHAIRMAN30$199,839$58,596
LISA WARD
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF EDUCATIO
Highest-paid employee
40$193,376$51,991
VALERIE STOLTENBERG
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
VP FINANCE30$182,576$14,115
SHARON FLETCHER
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF MKTG & C
Highest-paid employee
40$163,543$54,496
LAURIE PEEK
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
SECRETARY20$144,574$9,276
JENNIFER ORTEGA
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF PEOPLE O
Highest-paid employee
30$122,653$31,581
ERIKA SHAFFER
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
INSTRUCTIONAL DESIGN
Highest-paid employee
40$118,866$24,109
STEVE HILL
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
TREASURER2$12,720$0
MICHAEL DUFFIELD
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
BOARD MEMBER1$0$0
990-PF for the year ended June 30, 2023: 11 people
NameTitleHours / weekCompensationOther / benefits
MARY IPPOLITI-SMITH
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
EXECUTIVE LEADER40$303,950$39,456
SHEILA SEGURSON
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF COMMUNIT
Highest-paid employee
40$220,029$32,255
LISA WARD
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF EDUCATIO
Highest-paid employee
40$188,237$47,421
VALERIE STOLTENBERG
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
VP FINANCE30$176,595$13,347
SHARON FLETCHER
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF MKTG & C
Highest-paid employee
40$160,201$49,651
SHELLY THOMPSON
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF OPERATIO
Highest-paid employee
40$157,956$22,546
AMY D ZEIFANG
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
CHAIRMAN30$136,840$7,810
LAURIE PEEK
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
SECRETARY20$128,937$8,870
JENNIFER ORTEGA
6150 STONERIDGE MALL RD 125, PLEASANTON, CA 94588
DIRECTOR OF PEOPLE O
Highest-paid employee
30$114,447$28,065
STEVE HILL
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
TREASURER2$37,520$0
MICHAEL DUFFIELD
6150 STONERIDGE MALL RD SUITE 125, PLEASANTON, CA 94588
BOARD MEMBER2$0$0

Address and contacts

Address (IRS master file)
6150 STONERIDGE MALL RD STE 125, PLEASANTON, CA 94588-3170
In care of
% AMY ZEIFANG
Signed the 990-PF
AMY ZEIFANG, CHAIRMAN
Phone
(925) 310-5450
Return prepared by
ARMANINO ADVISORY LLC

California records

California keeps its own records of charities and corporations. Search them by EIN 94-3362163 or by the name THE DUFFIELD FAMILY FOUNDATION.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

What it must file and when

IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990-PF on file
2023June 30, 2024November 15, 2024990-PF on file

IRS record

EIN
94-3362163
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Private non-operating foundation
Donations deductible (Pub 78)
Private foundation, 30% limit
Exempt since
2025
Accounting year ends
June
Files
Form 990-PF
Category (NTEE)
Education (B99)
Assets (IRS master file)
$277,555,479
Income (IRS master file)
$109,651,886

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFJune 2025$17,231,773$18,289,043$277,555,479XML
990-TJune 2025–––IRS
990-PFJune 2024$12,487,603$24,855,367$266,741,354XML
990-TJune 2024–––IRS
990-PFJune 2023$15,164,945$16,187,369$259,973,566XML
990-TJune 2023–––IRS
990-PFJune 2022–––IRS
990-TJune 2022–––IRS
990-PFJune 2021–––IRS
990-TJune 2021–––IRS
990-PFJune 2020–––IRS
990-PFJune 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 94-3362163).

Questions about THE DUFFIELD FAMILY FOUNDATION

What is the EIN of THE DUFFIELD FAMILY FOUNDATION?
The employer identification number (EIN) of THE DUFFIELD FAMILY FOUNDATION is 94-3362163.
Is THE DUFFIELD FAMILY FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2025.
Are donations to THE DUFFIELD FAMILY FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does THE DUFFIELD FAMILY FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of THE DUFFIELD FAMILY FOUNDATION due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did THE DUFFIELD FAMILY FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-PF for the year ended June 2025.
Who are the officers and directors of THE DUFFIELD FAMILY FOUNDATION?
The 990-PF for the year ended June 30, 2025 lists 11 people; 10 received compensation from the organization, the highest $326,566 (MARY IPPOLITI-SMITH, EXECUTIVE LEADER).
How much revenue does THE DUFFIELD FAMILY FOUNDATION have?
On its 990-PF for the year ended June 30, 2025 it reported revenue of $17,231,773, expenses of $18,289,043 and total assets of $277,555,479 at year end.

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