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Private foundations San Diego, CAtax years 2023 to 2025

Private foundations in San Diego, CA

418 private foundations based in San Diego, CA filed a 990-PF in the last two years. In their latest returns they gave $348.2 million in 5,525 grants, and 46 say they accept applications.

Foundations with a return in the last two years, each by its latest return (tax years 2023 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Largest givers

By grants paid, latest return
  1. Wellcome Leap IncSan Diego, CA · tax year 2024 171 grants Preselected only $145,907,370 giving
  2. The Conrad Prebys FoundationSan Diego, CA · tax year 2024 392 grants Accepts applications $54,897,373 giving
  3. Torrey Coast FoundationSan Diego, CA · tax year 2024 25 grants Accepts applications $10,685,429 giving
  4. Alliance Healthcare FoundationSan Diego, CA · tax year 2024 88 grants Accepts applications $9,401,490 giving
  5. David C Copley FoundationSan Diego, CA · tax year 2024 125 grants Preselected only $8,268,008 giving
  6. Walter J & Betty C Zable FoundationSan Diego, CA · tax year 2024 76 grants Accepts applications $5,735,000 giving
  7. Kasperick FoundationSan Diego, CA · tax year 2024 24 grants Preselected only $4,536,415 giving
  8. Rady FoundationSan Diego, CA · tax year 2025 15 grants Preselected only $4,088,122 giving
  9. The Cushman FoundationSan Diego, CA · tax year 2024 88 grants Accepts applications $3,922,242 giving
  10. Amateur Radio Digital CommunicationsSan Diego, CA · tax year 2025 111 grants Preselected only $3,467,865 giving
  11. Helmut Kiffmann Family FoundationSan Diego, CA · tax year 2025 4 grants Preselected only $3,055,307 giving
  12. The McGrath Family FoundationSan Diego, CA · tax year 2024 8 grants Preselected only $2,981,499 giving
  13. Laurie C McGrath FoundationSan Diego, CA · tax year 2024 48 grants Preselected only $2,823,688 giving
  14. The Halicioglu Family FoundationSan Diego, CA · tax year 2025 2 grants Preselected only $2,700,000 giving
  15. Jacobs Family FoundationSan Diego, CA · tax year 2024 1 grant Accepts applications $2,550,000 giving
  16. Qualcomm Charitable FoundationSan Diego, CA · tax year 2024 Grants listed in an attachment (not in the e-file) Preselected only $2,263,812 giving
  17. Dr Seuss FoundationSan Diego, CA · tax year 2024 1 grant Accepts applications $2,232,234 giving
  18. Girard FoundationSan Diego, CA · tax year 2025 49 grants Preselected only $2,153,906 giving
  19. God's GiftSan Diego, CA · tax year 2024 105 grants Preselected only $2,102,000 giving
  20. Nobbs Family FoundationSan Diego, CA · tax year 2024 88 grants Preselected only $1,964,100 giving
  21. Avery-Tsui FoundationSan Diego, CA · tax year 2025 9 grants Preselected only $1,889,212 giving
  22. B QuestSan Diego, CA · tax year 2024 28 grants Preselected only $1,827,297 giving
  23. Del CorazonSan Diego, CA · tax year 2024 16 grants Preselected only $1,826,745 giving
  24. Americas Foundation IncSan Diego, CA · tax year 2024 21 grants Accepts applications $1,821,000 giving
  25. Sempra FoundationSan Diego, CA · tax year 2024 1,501 grants Preselected only $1,820,957 giving

Foundations that accept applications

Largest first

The return gives an application contact and does not check the preselected-only box.

  1. The Conrad Prebys FoundationSan Diego, CA · tax year 2024 392 grants Accepts applications $54,897,373 giving
  2. Torrey Coast FoundationSan Diego, CA · tax year 2024 25 grants Accepts applications $10,685,429 giving
  3. Alliance Healthcare FoundationSan Diego, CA · tax year 2024 88 grants Accepts applications $9,401,490 giving
  4. Walter J & Betty C Zable FoundationSan Diego, CA · tax year 2024 76 grants Accepts applications $5,735,000 giving
  5. The Cushman FoundationSan Diego, CA · tax year 2024 88 grants Accepts applications $3,922,242 giving
  6. Jacobs Family FoundationSan Diego, CA · tax year 2024 1 grant Accepts applications $2,550,000 giving
  7. Dr Seuss FoundationSan Diego, CA · tax year 2024 1 grant Accepts applications $2,232,234 giving
  8. Americas Foundation IncSan Diego, CA · tax year 2024 21 grants Accepts applications $1,821,000 giving
  9. The Bridget Rose Foundation IncSan Diego, CA · tax year 2025 24 grants Accepts applications $1,070,000 giving
  10. LJ Scenic FoundationSan Diego, CA · tax year 2024 15 grants Accepts applications $1,004,482 giving
  11. Smart Food Market Inc DBA Smart Food FoundationSan Diego, CA · tax year 2024 4 grants Accepts applications $363,169 giving
  12. Dennis and Pamela Mudd Charitable FoundationSan Diego, CA · tax year 2024 11 grants Accepts applications $288,780 giving
  13. Joseph and Dorothy Goldberg Charitable TrustSan Diego, CA · tax year 2025 12 grants Accepts applications $255,000 giving
  14. ES3 FoundationSan Diego, CA · tax year 2024 27 grants Accepts applications $209,623 giving
  15. Childrens Health FoundationSan Diego, CA · tax year 2025 17 grants Accepts applications $203,184 giving
  16. The Stein Family FoundationSan Diego, CA · tax year 2025 30 grants Accepts applications $190,500 giving
  17. Szekely Family FoundationSan Diego, CA · tax year 2024 20 grants Accepts applications $170,500 giving
  18. Lee S Monroe FoundationSan Diego, CA · tax year 2024 10 grants Accepts applications $160,000 giving
  19. San Diego County Citizens' Scholars FoundationSan Diego, CA · tax year 2024 1 grant Accepts applications $135,000 giving
  20. Health Quest FoundationSan Diego, CA · tax year 2024 22 grants Accepts applications $115,635 giving
  21. Jonny Bass FoundationSan Diego, CA · tax year 2024 1 grant Accepts applications $110,124 giving
  22. William Male FoundationSan Diego, CA · tax year 2025 22 grants Accepts applications $85,051 giving
  23. Protostar FoundationSan Diego, CA · tax year 2024 7 grants Accepts applications $79,000 giving
  24. The Gregg Family Charitable Foundation IncSan Diego, CA · tax year 2025 14 grants Accepts applications $75,993 giving
  25. Rees Stealy Research FoundationSan Diego, CA · tax year 2025 1 grant Accepts applications $70,000 giving

Giving by cause

Grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education96 foundations $40,992,56932% of the total
  2. Health59 foundations $19,549,56215% of the total
  3. Arts and culture74 foundations $15,335,16212% of the total
  4. Philanthropy and grantmaking57 foundations $10,829,9868% of the total
  5. Human services85 foundations $8,001,4886% of the total
  6. Community development21 foundations $4,906,8404% of the total
  7. 19 other causes $28,107,61622% of the total

Most active small givers

Foundations with under $1 million in assets, by the number of grants they listed.

  1. San Diego County Salute to EducationSan Diego, CA · tax year 2024 138 grants Preselected only $238,664 giving
  2. General Atomics Sciences Education FoundationSan Diego, CA · tax year 2024 74 grants Preselected only $123,676 giving
  3. Dorothea Tuney FoundationSan Diego, CA · tax year 2025 32 grants Preselected only $24,438 giving
  4. ES3 FoundationSan Diego, CA · tax year 2024 27 grants Accepts applications $209,623 giving
  5. Salmon Family FoundationSan Diego, CA · tax year 2025 27 grants Preselected only $26,000 giving
  6. Fiske Family FoundationSan Diego, CA · tax year 2024 22 grants Preselected only $150,940 giving
  7. Health Quest FoundationSan Diego, CA · tax year 2024 22 grants Accepts applications $115,635 giving
  8. William Male FoundationSan Diego, CA · tax year 2025 22 grants Accepts applications $85,051 giving
  9. Mark and Karla Stuart FoundationSan Diego, CA · tax year 2025 22 grants Preselected only $30,590 giving
  10. Pacific Charitable FoundationSan Diego, CA · tax year 2024 19 grants Preselected only $8,400 giving
  11. Swartz Family FoundationSan Diego, CA · tax year 2025 17 grants Preselected only $50,000 giving
  12. Del CorazonSan Diego, CA · tax year 2024 16 grants Preselected only $1,826,745 giving
  13. Stacy R Jacobs FoundationSan Diego, CA · tax year 2024 16 grants Preselected only $871,104 giving
  14. Maravai Lifesciences FoundationSan Diego, CA · tax year 2024 16 grants Preselected only $270,500 giving
  15. LJ Scenic FoundationSan Diego, CA · tax year 2024 15 grants Accepts applications $1,004,482 giving