Harbor Day School
Funding Overview
From IRS Form 990 filings · 2020–2026
Total received
$16.5M
Foundation funders
20
Grants recorded
53
Years covered
2020–2026
Who funds Harbor Day School?
Harbor Day School is funded by 20 grantmakers, led by Harbor Day Endowment Corporation ($7.6M), The William Jeff and Jennifer Gross ($3.3M), GS Donor Advised Philanthropy Fund for Wealth Management Inc ($3.0M). In total, IRS Form 990 filings record $16.5M in grants to Harbor Day School between 2020–2026.
| Funder | Total given | Grants | Years |
|---|---|---|---|
| Harbor Day Endowment Corporation | $7,563,673 | 1 | 2025 |
| The William Jeff and Jennifer Gross | $3,275,000 | 3 | 2021–2024 |
| GS Donor Advised Philanthropy Fund for Wealth Management Inc | $3,045,000 | 3 | 2021–2024 |
| The Lewis Family Charitable Foundation | $1,000,000 | 5 | 2020–2024 |
| Argyros Family Foundation | $496,889 | 2 | 2021–2022 |
| Bellwether Charitable Foundation | $300,000 | 3 | 2024–2026 |
| Pralle Krotts Family Foundation | $205,000 | 4 | 2020–2023 |
| Orange County Community Foundation | $171,000 | 4 | 2021–2024 |
| National Philanthropic Trust | $107,800 | 2 | 2021–2024 |
| Macdonald Family Foundation | $100,000 | 1 | 2020 |
| Morgan Stanley Global Impact Funding Trust Inc | $80,000 | 9 | 2020–2024 |
| California Community Foundation | $50,000 | 1 | 2024 |
| Mark & Semira Moshayedi | $50,000 | 1 | 2023 |
| Curci Fund | $25,000 | 2 | 2023–2024 |
| Spirit of Hope Foundation | $17,500 | 5 | 2020–2024 |
| The Blackbaud Giving Fund | $14,510 | 2 | 2022–2023 |
| The San Francisco Foundation | $12,000 | 2 | 2024–2025 |
| Charities Aid Foundation America | $5,500 | 1 | 2024 |
| JPMorgan Chase Foundation | $100 | 1 | 2021 |
| The Lazard Charitable Foundation | $25 | 1 | 2024 |
Funding over time
Grant dollars and counts received per year
From 2020 to 2026, annual grant giving ranged from $100K (2026) to $7.7M (2025). In 2026 it made 1 grant totaling $100K.
What grants has Harbor Day School received?
Individual grants from IRS Form 990 filings, newest first
| Year | Funder | Purpose | Amount |
|---|---|---|---|
| 2026 | Bellwether Charitable Foundation | For support of organization's work in children's education | $100,000 |
| 2025 | Harbor Day Endowment Corporation | Supported Organization - Education | $7,563,673 |
| 2025 | Bellwether Charitable Foundation | For support of organization's work in children's education | $100,000 |
| 2025 | The San Francisco Foundation | FOR GENERAL SUPPORT | $6,000 |
| 2024 | GS Donor Advised Philanthropy Fund for Wealth Management Inc | EDUCATION | $1,665,000 |
| 2024 | The William Jeff and Jennifer Gross | GENERAL DONATION | $275,000 |
| 2024 | The Lewis Family Charitable Foundation | PROVIDE STUDENTS WITH AN EXCELLENT PRIMARY EDUCATION WHICH WILL SET THEFOUNDATION FOR FURTHER ACADEMIC ACHIEVEMENT | $200,000 |
| 2024 | Bellwether Charitable Foundation | For support of organization's work in children's education | $100,000 |
| 2024 | California Community Foundation | EDUCATION | $50,000 |
| 2024 | Morgan Stanley Global Impact Funding Trust Inc | UNRESTRICTED GENERAL SUPPORT | $30,000 |
| 2024 | Orange County Community Foundation | EDUCATION | $8,000 |
| 2024 | The San Francisco Foundation | FOR GENERAL SUPPORT. | $6,000 |
| 2024 | Charities Aid Foundation America | CHARITABLE DONATION | $5,500 |
| 2024 | National Philanthropic Trust | RELIGION | $5,300 |
| 2024 | Curci Fund | GENERAL SUPPORT OF CHARITY | $5,000 |
| 2024 | Spirit of Hope Foundation | EDUCATION | $2,500 |
| 2024 | The Lazard Charitable Foundation | UNRESTRICTED | $25 |
| 2023 | GS Donor Advised Philanthropy Fund for Wealth Management Inc | EDUCATION | $880,000 |
| 2023 | The Lewis Family Charitable Foundation | PROVIDE STUDENTS WITH AN EXCELLENT PRIMARY EDUCATION WHICH WILL SET THEFOUNDATION FOR FURTHER ACADEMIC ACHIEVEMENT | $200,000 |
| 2023 | Orange County Community Foundation | EDUCATION | $100,000 |
| 2023 | Pralle Krotts Family Foundation | EDUCATION | $50,000 |
| 2023 | Mark & Semira Moshayedi | GENERAL CONTRIBUTION | $50,000 |
| 2023 | Curci Fund | GENERAL SUPPORT OF CHARITY | $20,000 |
| 2023 | The Blackbaud Giving Fund | GENERAL SUPPORT | $5,010 |
| 2023 | Spirit of Hope Foundation | EDUCATION | $2,500 |
| 2022 | The William Jeff and Jennifer Gross | GENERAL DONATION | $500,000 |
| 2022 | Argyros Family Foundation | EDUCATION | $245,617 |
| 2022 | The Lewis Family Charitable Foundation | PROVIDE STUDENTS WITH AN EXCELLENT PRIMARY EDUCATION WHICH WILL SET THE FOUNDATION FOR FURTHER ACADEMIC ACHIEVEMENT | $200,000 |
| 2022 | Orange County Community Foundation | EDUCATION | $55,000 |
| 2022 | Pralle Krotts Family Foundation | EDUCATION | $55,000 |
Showing 30 most recent of 53 recorded grants.
Frequently Asked Questions
Who funds Harbor Day School?
Harbor Day School is funded by 20 grantmakers, led by Harbor Day Endowment Corporation ($7.6M), The William Jeff and Jennifer Gross ($3.3M), GS Donor Advised Philanthropy Fund for Wealth Management Inc ($3.0M). In total, IRS Form 990 filings record $16.5M in grants to Harbor Day School between 2020–2026.
Who is Harbor Day School's largest funder?
Harbor Day Endowment Corporation is the largest recorded funder of Harbor Day School, with $7.6M across 1 grant (2025).
How much grant funding has Harbor Day School received?
IRS 990 filings record $16.5M in grants to Harbor Day School across 53 grants from 20 funders between 2020–2026. Filings are published on a delay, so recent grants may not appear yet.
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Grant data is drawn from IRS Form 990 filings via Grantable's GrantGraph™. Filings are published on a delay; recent grants may not appear yet.
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