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Nonprofit · EIN 95-2942582

THE SAN DIEGO FOUNDATION

Tax-exempt · SAN DIEGO, CA 92106

Financials

$268.7M$159.7M2022$218.4M$151.5M2023$196.9M$150.8M2024
Revenue Expenses · by fiscal year end
Financials of THE SAN DIEGO FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990$196,946,092$150,764,759$46,181,333$1,651,991,058$167,825,624$1,484,165,434
June 30, 2024990$218,410,559$151,459,377$66,951,182$1,547,963,068$158,865,196$1,389,097,872
June 30, 2023990$268,696,192$159,687,256$109,008,936$1,449,190,327$154,861,429$1,294,328,898
Financial details: 990 for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$82,853,230
of which government grants
$19,561,668
Program service revenue
$31,028,924
Investment income
$83,246,134
Net rental income
-$182,196
Net gain from sales of assets
$54,325,382
Other revenue
-$182,196

Expenses

Grants and similar amounts paid
$98,736,561
Compensation of officers, directors and key employees
$1,682,023
Other salaries and wages
$11,992,495
Salaries, compensation and benefits (total)
$16,822,911
Professional fundraising fees
$0
Legal fees
$1,630,222
Accounting fees
$218,864
Occupancy
$114,390
Travel
$77,837
Depreciation
$501,181
Program services (functional)
$124,717,867
Management and general (functional)
$22,226,544
Fundraising (functional)
$3,820,348

Balance sheet and other

Total assets, start of year
$1,547,963,068
Total assets, end of year
$1,651,991,058
Total liabilities, end of year
$167,825,624
Net assets, end of year
$1,484,165,434
Land, buildings and equipment
$6,381,052
Publicly traded securities
$758,826,622
Net assets without donor restrictions
$575,106,454
Net assets with donor restrictions
$909,058,980
Gross unrelated business income
$600,068
Gross receipts
$445,842,031
Employees
131
Volunteers
105
Year formed
1975
State of legal domicile
CA

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 for the year ended June 30, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
SUSAN L GUINNCHIEF INNOVATION OFFICER
Highest-paid employee
40$670,117$104,003
MARK A STUART CFREPRESIDENT & CEO
Officer
40$641,727$95,681
JAMES HOWELLVP, CHIEF FINANCIAL OFFICER
Officer
40$457,686$66,340
MATT FETTIGVP, CHIEF INVESTMENT OFFICER
Officer
40$407,606$56,740
BRIAN ZUMBANOVP, DEVELOPMENT & STEWARDS
Highest-paid employee
40$372,131$62,374
PAMELA G PAYTON VP CHIEFIMPACT & PARTNERSHIPS OFFICER
Highest-paid employee
40$293,295$49,844
THERESA NAKATAVP, CHIEF COMMUNICATIONS OFFICER
Highest-paid employee
40$287,181$35,552
KELLY FEUILLETAVP OF FINANCE, CONTROLLER
Highest-paid employee
40$268,930$36,987
PAM LUSTERCHAIR
Trustee or director, Officer
2$0$0
STEVEN KLOSTERMANVICE CHAIR
Trustee or director, Officer
2$0$0
DR PRADEEP GIDWANI MD MPHSECRETARY
Trustee or director, Officer
2$0$0
CINDY J BERTRANDTREASURER
Trustee or director, Officer
2$0$0
ALESSANDRA LEZAMAGOVERNOR (THRU 6/25)
Trustee or director
1.3$0$0
ALLEN YOUNGGOVERNOR
Trustee or director
1.3$0$0
AMANDA MONTGOMERYGOVERNOR
Trustee or director
1.3$0$0
14 more people on this return
NameTitleHours / weekCompensation
AMINA SHEIK MOHAMADGOVERNOR
Trustee or director
1.3$0
CLIFFORD SCHIRESONGOVERNOR
Trustee or director
1.3$0
DR BECKY PETITTGOVERNOR
Trustee or director
1.3$0
ELVIN LAIGOVERNOR
Trustee or director
1.3$0
GISELE BONITZGOVERNOR
Trustee or director
1.3$0
GLORIA CORRALGOVERNOR
Trustee or director
1.3$0
KEN DERRETTGOVERNOR
Trustee or director
1.3$0
KEVIN HAMILTONGOVERNOR
Trustee or director
1.3$0
LEENA GUPTAGOVERNOR
Trustee or director
1.3$0
LIZA CRISAFIGOVERNOR
Trustee or director
1.3$0
MEL KATZGOVERNOR
Trustee or director
1.3$0
P KAY COLEMANGOVERNOR
Trustee or director
1.3$0
RAFAEL CASTELLANOSGOVERNOR
Trustee or director
1.3$0
RUDY JOHNSONGOVERNOR
Trustee or director
1.3$0
990 for the year ended June 30, 2024: 27 people
NameTitleHours / weekCompensationOther / benefits
SUSAN GUINNCHIEF INNOVATION OFFICER
Highest-paid employee
40$672,993$48,244
MARK STUARTPRESIDENT & CEO
Officer
40$597,886$91,347
JAMES HOWELLVP, CHIEF FINANCIAL OFFICER
Officer
40$415,597$70,994
MATT FETTIGVP, CHIEF INVESTMENT OFFICER
Officer
40$381,202$54,971
BRIAN ZUMBANOVP, DEVELOPMENT & STEWARDS
Highest-paid employee
40$347,810$59,352
PAMELA G PAYTON VP CHIEFIMPACT & PARTNERSHIPS OFFICER
Highest-paid employee
40$253,855$29,389
THERESA NAKATAVP, CHIEF COMMUNICATIONS OFFICER
Highest-paid employee
40$248,767$26,862
KELLY FEUILLETAVP OF FINANCE, CONTROLLER
Highest-paid employee
40$222,298$34,791
PAM LUSTERCHAIR
Trustee or director, Officer
2$0$0
STEVEN KLOSTERMANIMMEDIATE PAST CHAIR & VICE CHAIR
Trustee or director, Officer
2$0$0
DR BECKY PETITTSECRETARY
Trustee or director, Officer
2$0$0
ELVIN LAITREASURER
Trustee or director, Officer
2$0$0
ALESSANDRA LEZAMAGOVERNOR
Trustee or director
1.3$0$0
AMANDA MONTGOMERYGOVERNOR
Trustee or director
1.3$0$0
CINDY BERTRANDGOVERNOR
Trustee or director
1.3$0$0
CLIFFORD SCHIRESONGOVERNOR
Trustee or director
1.3$0$0
GISELE BONITZGOVERNOR
Trustee or director
1.3$0$0
GLORIA CORRALGOVERNOR
Trustee or director
1.3$0$0
KEN DERRETTGOVERNOR
Trustee or director
1.3$0$0
KEVIN HAMILTONGOVERNOR
Trustee or director
1.3$0$0
LEENA GUPTAGOVERNOR
Trustee or director
1.3$0$0
MEL KATZGOVERNOR
Trustee or director
1.3$0$0
PEDRO VILLEGASGOVERNOR UNTIL 6/13/24
Trustee or director
1.3$0$0
P KAY COLEMANGOVERNOR
Trustee or director
1.3$0$0
DR PRADEEP GIDWANIGOVERNOR
Trustee or director
1.3$0$0
RUDY JOHNSONGOVERNOR
Trustee or director
1.3$0$0
XIOMARA ARROYOGOVERNOR UNTIL 9/19/23
Trustee or director
1.3$0$0
990 for the year ended June 30, 2023: 27 people
NameTitleHours / weekCompensationOther / benefits
MARK STUARTPRESIDENT & CEO
Officer
40$642,491$77,058
SUSAN GUINNCHIEF INNOVATION OFFICER
Highest-paid employee
40$563,680$36,090
JAMES HOWELLVP, CHIEF FINANCIAL OFFICER
Officer
40$390,459$64,162
MATT FETTIGVP, CHIEF INVESTMENT OFFICER
Officer
40$363,339$48,611
BRIAN ZUMBANOVP, DEVELOPMENT & STEWARDS
Highest-paid employee
40$301,917$51,132
THERESA NAKATAVP, CHIEF COMMUNICATIONS OFFICER
Highest-paid employee
40$249,072$25,649
KELLY FEUILLETDIRECTOR, FINANCIAL REPORTING
Highest-paid employee
40$236,522$30,251
PAMELA G PAYTON VP CHIEFIMPACT & PARTNERSHIPS OFFICER
Highest-paid employee
40$236,594$26,569
STEVEN KLOSTERMANCHAIR
Trustee or director, Officer
2$0$0
P KAY COLEMANVICE CHAIR
Trustee or director, Officer
2$0$0
BECKY PETITTSECRETARY
Trustee or director, Officer
2$0$0
HAL DUNNINGTREASURER
Trustee or director, Officer
2$0$0
ALESSANDRA LEZAMAGOVERNOR
Trustee or director
1.3$0$0
AMANDA MONTGOMERYGOVERNOR
Trustee or director
1.3$0$0
CINDY BERTRANDGOVERNOR
Trustee or director
1.3$0$0
CLIFFORD SCHIRESONGOVERNOR
Trustee or director
1.3$0$0
ELISABETH EISNER FORBESGOVERNOR
Trustee or director
1.3$0$0
ELVIN LAIGOVERNOR
Trustee or director
1.3$0$0
GISELE BONITZGOVERNOR
Trustee or director
1.3$0$0
KEN DERRETTGOVERNOR
Trustee or director
1.3$0$0
KEVIN HAMILTONGOVERNOR
Trustee or director
1.3$0$0
MEL KATZGOVERNOR
Trustee or director
1.3$0$0
PAM LUSTERGOVERNOR
Trustee or director
1.3$0$0
PEDRO VILLEGASGOVERNOR
Trustee or director
1.3$0$0
PRADEEP GIDWANIGOVERNOR
Trustee or director
1.3$0$0
RUDY JOHNSONGOVERNOR
Trustee or director
1.3$0$0
XIOMARA ARROYOGOVERNOR
Trustee or director
1.3$0$0

Address and contacts

Address (IRS master file)
2508 HISTORIC DECATUR, SAN DIEGO, CA 92106-6138
Principal officer (990 for 2024)
MARK A STUART, 2508 HISTORIC DECATUR ROAD 200, SAN DIEGO, CA 92106
Signed the 990
MATTHEW FETTIG, CIO & CFO
Phone
(619) 235-2300
Return prepared by
BAKER TILLY ADVISORY GROUP LP

California records

California keeps its own records of charities and corporations. Search them by EIN 95-2942582 or by the name THE SAN DIEGO FOUNDATION.

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

Mission

THE SAN DIEGO FOUNDATION INSPIRES ENDURING PHILANTHROPY AND ENABLES COMMUNITY SOLUTIONS TO IMPROVE THE QUALITY OF LIFE IN OUR REGION.

990 for the year ended June 30, 2025

Program accomplishments

  • SEE SCHEDULE O.SINCE 1975, SAN DIEGO FOUNDATION HAS PROVIDED A PERMANENT AND GROWING SOURCE OF FUNDING TO NONPROFITS SERVING THE SAN DIEGO REGION. THANKS TO THE GENEROSITY OF DONORS, THE FOUNDATION GRANTS MILLIONS OF DOLLARS ANNUALLY TO NONPROFIT ORGANIZATIONS ADDRESSING THE CHALLENGES AND NEEDS IN THE SAN DIEGO REGION BY USING THE HIGHEST LEVEL OF PHILANTHROPIC AND INVESTMENT EXPERTISE TO PROVIDE MAXIMUM IMPACT.SAN DIEGO FOUNDATION MAXIMIZES THE IMPACT OF CHARITABLE GIVING TO ENACT POSITIVE CHANGE IN OUR REGION. WE PARTNER WITH DONORS, NONPROFITS AND REGIONAL LEADERS TO CO-CREATE SOLUTIONS THAT RESPOND TO COMMUNITY NEEDS AND STRENGTHEN SAN DIEGO.WE MANAGE CHARITABLE FUNDS FOR HUNDREDS OF INDIVIDUALS, FAMILIES AND CORPORATIONS. A GIFT TO SAN DIEGO FOUNDATION PROVIDES MAXIMUM TAX DEDUCTIONS, OUTSTANDING INVESTMENT MANAGEMENT AND LOW ADMINISTRATIVE COSTS. WITH MORE THAN 50 YEARS SERVING THE COMMUNITY AND HUNDREDS OF ACTIVE PARTNERSHIPS AND COLLABORATIONS WITH BUSINESS, GOVERNMENT AND COMMUNITY LEADERS AND ORGANIZATIONS, WE ARE ABLE TO ASSESS CHANGING REGIONAL NEEDS AND TAKE ACTION ON SAN DIEGO'S MOST PRESSING CHALLENGES. WE GATHER THIS INFORMATION AND CREATE AN ONGOING UNDERSTANDING OF OUR REGION'S NEEDS AND PAIR IT WITH OUR DONORS' PASSIONS, VALUES AND INTEREST AREAS AND CONNECT THEM WITH NONPROFIT ORGANIZATIONS THAT OFFER SOLUTIONS.SAN DIEGO FOUNDATION ALLOWS INDIVIDUALS AND FAMILIES TO ESTABLISH CUSTOMIZED CHARITABLE FUNDS WITHOUT THE BURDEN OF TAX LIABILITIES AND ADMINISTRATIVE TASKS ASSOCIATED WITH SETTING UP A PRIVATE FOUNDATION. OUR BOARD OF GOVERNORS, COMPRISED OF PROFESSIONAL EXPERTS AND COMMUNITY LEADERS, AND OUR KNOWLEDGEABLE STAFF PROVIDE KEEN OVERSIGHT AND AN UNWAVERING COMMITMENT TO HONORING THE WISHES OF EACH DONOR.SAN DIEGO FOUNDATION'S PROGRAM AREAS ARE GUIDED BY OUR ORGANIZATIONAL VALUES. WE VALUE ALL PEOPLE, ALL PARTNERS, AND OUR REGION. WE ACT WITH INTEGRITY AND RESPECT FOR ONE ANOTHER AND THE COMMUNITIES WE SERVE, WE ENGAGE DIVERSE PERSPECTIVES TO FOSTER COLLABORATION AND INNOVATIVE SOLUTIONS, AND WE STRIVE FOR AN INCLUSIVE COMMUNITY WHERE EVERYONE HAS EQUITABLE ACCESS TO OPPORTUNITY.WE ADHERE TO A DEEPLY ETHICAL APPROACH TO PHILANTHROPY, ONE THAT HOLDS OURSELVES ACCOUNTABLE TO BEING A TRUSTWORTHY PARTNER AND TO APPROACHING OUR WORK WITH HUMILITY AND RESPECT FOR THE EXPERTISE OF THE COMMUNITIES WE SERVE AND OF THE GOVERNMENT, NONPROFIT, BUSINESS SECTORS AND INDIVIDUALS WITH WHOM WE COLLABORATE. WE WILL BE OPEN-MINDED, LEARN CONSTANTLY, LISTEN CAREFULLY TO DIFFERENT EXPERIENCES AND DIFFERENT PERSPECTIVES, BUILD STRONG AND DIVERSE COALITIONS, SUPPORT COMMUNITY ENGAGEMENT AND ENGAGE IN SHARED DECISION-MAKING. GRANT OPPORTUNITIES ARE OFFERED BY SAN DIEGO FOUNDATION, SAN DIEGO WOMEN'S FOUNDATION, POLICY & INNOVATION CENTER AND OUR SEVEN REGIONAL AFFILIATE FOUNDATIONS (4SRANCH-DEL SUR, CARLSBAD, CHULA VISTA, ESCONDIDO, OCEANSIDE, RAMONA, AND RANCHO BERNARDO).
    Expenses $124,717,867 · grants $98,736,561 · revenue $31,028,924

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. 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 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
95-2942582
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1975
Accounting year ends
June
Files
Form 990 or 990-EZ
Assets (IRS master file)
$1,651,991,058
Income (IRS master file)
$445,842,031

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2025$196,946,092$150,764,759$1,651,991,058IRS
990-TJune 2025–––IRS
990June 2024$218,410,559$151,459,377$1,547,963,068IRS
990-TJune 2024–––IRS
990June 2023$268,696,192$159,687,256$1,449,190,327XML
990-TJune 2023–––IRS
990June 2022$283,565,373$179,913,602$1,298,825,008IRS
990-TJune 2022–––IRS
990June 2021–––IRS
990-TJune 2021–––IRS
990June 2020–––IRS
990June 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 95-2942582).

Questions about THE SAN DIEGO FOUNDATION

What is the EIN of THE SAN DIEGO FOUNDATION?
The employer identification number (EIN) of THE SAN DIEGO FOUNDATION is 95-2942582.
Is THE SAN DIEGO FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1975.
Are donations to THE SAN DIEGO FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does THE SAN DIEGO FOUNDATION file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of THE SAN DIEGO 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 SAN DIEGO FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended June 2025.
Who is the principal officer of THE SAN DIEGO FOUNDATION?
The 990 for the year ended June 30, 2025 names MARK A STUART.
Who are the officers and directors of THE SAN DIEGO FOUNDATION?
The 990 for the year ended June 30, 2025 lists 29 people; 8 received compensation from the organization, the highest $670,117 (SUSAN L GUINN, CHIEF INNOVATION OFFICER).
How much revenue does THE SAN DIEGO FOUNDATION have?
On its 990 for the year ended June 30, 2025 it reported revenue of $196,946,092, expenses of $150,764,759 and total assets of $1,651,991,058 at year end.

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