San Diego Squared
To advance workforce and talent development within science, technology, engineering, and mathematics ("STEM") sectors by fostering excellence in education, expanding access to opportunities, and delivering transformative resources to empower underrepresented and underserved communities.
San Diego Squared at a glance
In short: San Diego Squared gave $120K across 1 grant in 2025 (avg $120K), mostly in California. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $120,000
- +300.0% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $120,000
- +300.0% vs 2024
- Median grant
- $120,000
- Total assets
- $3,618,649
- +5.0% vs 2024
- Primary geography
- California (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
How to apply to San Diego Squared
Open Grants
7 open opportunities from San Diego Squared
Illumina SD2 STEM Scholarship
San Diego Squared
Amount
$2,500
Deadline
Deadline not published
Melody SD2 Scholarship
San Diego Squared
Amount
Varies
Deadline
Deadline not published
Neurocrine Biosciences SD2 STEM Educators Award
San Diego Squared
Amount
$5,000
Deadline
Deadline not published
Who San Diego Squared funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was UC San Diego Foundation ($120K).
Grant Size Distribution
6 grants across all recorded years
The most common grant size was under $50K: 5 grants of 6 (83%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
States
Cities
How San Diego Squared gives
- Giving grew 300% from 2022 to 2025. Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2025, annual grant giving ranged from $30K (2022) to $120K (2025). In 2025 it made 1 grant totaling $120K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| UC San Diego Foundation La Jolla, CA | Undergraduate scholarships to students participating in PATHways to STEM program at UC San Diego | $120,000 |
Ready to take the next step with San Diego Squared?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $3,618,649 | $1,668,522 | $1,384,413 | $120,000 | 1 | $137,977 |
| 2024 | $3,446,535 | $1,594,405 | $1,168,789 | $30,000 | 1 | — |
| 2023 | $2,879,066 | $1,319,826 | $1,001,192 | $30,000 | 1 | — |
| 2022 | $1,862,856 | $783,793 | $535,108 | $30,000 | 1 | $-608 |
| 2021 | $1,476,977 | $1,055,464 | $245,232 | $33,990 | 2 | $-4,345 |
About San Diego Squared
Based on IRS filings
San Diego Squared is a public charity focused on Education, based in San Diego, CA. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $3.6M in total assets. In 2025, it awarded 1 grant totaling $120K. Net investment income was $138K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
San Diego Squared is led by Bill Rastetter PhD, Chairman on every filing since 2021; 2 of 17 officers listed in 2025 are compensated.
Officers on the 2025 filing
Bill Rastetter PhD
Chairman
On filings since 2021
No compensation reported
Charles Theuer MD PhD
Director
On filings since 2021
No compensation reported
Gentry Patrick PhD
Director
On filings since 2021
No compensation reported
Julie Cooke
Director
On filings since 2021
No compensation reported
Mike Hird
Director
On filings since 2021
No compensation reported
Paul Vaden
Director
On filings since 2021
No compensation reported
carlos ramirez
Director
Director Ex- Officio → Director, 2024
On filings since 2022
No compensation reported
Darin Lippoldt
Director
Corporate Secretary → Director, 2024
On filings since 2022
No compensation reported
Alexander Bolante
Director
On filings since 2024
No compensation reported
Patricia Leckman
Director
On filings since 2024
No compensation reported
Anne Marbarger
Director
New on the 2025 filing
No compensation reported
Arvind Kush
Director
New on the 2025 filing
No compensation reported
Chad Urie
Director
New on the 2025 filing
No compensation reported
Linda Sierra
Director
New on the 2025 filing
No compensation reported
Pantea Khodami
Director
New on the 2025 filing
No compensation reported
Harid Puentes
Co-Founder
On filings since 2021
40 hrs/week
$30K (2021) → $216K (2025)
Karmin Noar
COO
On filings since 2024
40 hrs/week
$168K (2024) → $195K (2025)
Former officers (3)
- Former: Aimee Hoyt (2021–2023) — Director
- Former: Tamara Y Craver (2021–2023) — Director Ex- Officio
- Former: Esther Martinborough (2022–2023) — Director
Data from IRS Form 990 filings, 2021–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $216K, to Harid Puentes (Co-Founder). 2 officers or directors reported compensation on that filing.
Frequently asked questions about San Diego Squared
How much does San Diego Squared give each year?
San Diego Squared gave $120K across 1 grant in 2025, according to its 2025 IRS Form 990. In 2024 it gave $30K across 1 grant.
How large is San Diego Squared?
San Diego Squared reported $3.6M in total assets on its 2025 IRS Form 990. Its revenue that year was $1.7M.
What is San Diego Squared?
San Diego Squared is a public charity focused on Education, based in San Diego, CA. It holds $3.6M in total assets as of 2025.
Where does San Diego Squared operate?
San Diego Squared has awarded grants in California.
What is San Diego Squared's EIN?
San Diego Squared's EIN (Employer Identification Number) is 85-3336715. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2021 (received by the IRS April 29, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS May 4, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS March 14, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS March 6, 2025)
- Updated Form 990 for fiscal year 2025 (received by the IRS November 17, 2025)
- IRS filings on file for fiscal years 2021–2025
Explore Open Grants
Browse active grant opportunities in San Diego Squared's focus areas in our free grants database
Similar Funders
Funders with grantees in common, and similar funders in California
Philanthropy International
Claremont, CA
Philanthropy International supports qualified charities across varied fields, including conservation, education, relief, homelessness, religious activities, and veterans’ services, with most 2024 funding going to California. Its 2024 grants ranged from $200 to $135,000, with a median of $2,500. Applications may be submitted by letter.
Assets
$13.1M
Grants
136
Total Given
$1.4M
Price Philanthropies Foundation
La Jolla, CA
Price Philanthropies Foundation supports opportunities for underserved youth and families, including early education and childcare, youth mental health, and organizations that strengthen San Diego communities; it offers general operating, program, and capital grants. Its 2024 grants ranged from $1,000 to $19.1 million, with a median of $22,410, and funding is primarily focused on San Diego—especially City Heights—with additional stated interests in PriceSmart communities in Latin America and the Caribbean and Israel. The foundation says it does not accept unsolicited grant requests at this time.
Assets
$446.8M
Grants
246
Total Given
$33.8M
Laura & Richard Schrager Family
Solana Beach, CA
The foundation’s 2025 grants supported organizations working in areas such as Jewish community services, hunger relief, youth education, child abuse recovery, and military-family assistance, mainly in California, with additional funding in Nebraska, Iowa, and New York. It gave 20 grants of $250–$7,500, with a median of $1,000, and funds only preselected organizations; it does not accept unsolicited requests.
Assets
$402K
Grants
20
Total Given
$35K
The Conrad Prebys Foundation
San Diego, CA
The Conrad Prebys Foundation funds visual and performing arts, youth success, healthcare, and medical research, primarily in San Diego County. Its 2024 grants ranged from $200 to $3 million, with a median of $100,000. It offers opportunities throughout the year, including open applications and requests for proposals, but may also use invitation-only or community-led processes.
Assets
$1.1B
Grants
392
Total Given
$54.9M
Gilbert J Martin Foundation
San Diego, CA
The foundation supports universities and research, emergency relief, homelessness services, health care, and food assistance, primarily in California. Its 2024 grants ranged from $2,000 to $300,000, with a median of $10,000. It funds only preselected organizations and does not accept unsolicited requests.
Assets
$15.4M
Grants
56
Total Given
$1.7M
Rancho Santa Fe Foundation
Rancho Santa Fe, CA
Rancho Santa Fe Foundation funds a broad range of causes, with strategic priorities in military and veteran support, education, and healthy communities; its giving reaches San Diego County and organizations nationally and internationally. Its 2024 grants had a median of $25,000, though awards varied widely; donor-advised funds do not accept unsolicited requests, and Community Impact Fund applications are by invitation only.
Assets
$188.7M
Grants
253
Total Given
$14.3M
More similar funders
More Funders in California
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from San Diego Squared's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
San Diego Squared down — hundreds of funders to go?