The Natasha & Dirk Ziff Foundation
The Natasha & Dirk Ziff Foundation is a private foundation, based in New York, NY. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $748K in total assets. Net investment income was $32K.
The Natasha & Dirk Ziff Foundation at a glance
- Total assets
- $747,938
- +4.1% vs 2024
- Revenue (2025)
- $29,639
- -41.2% vs 2024
- Net investment income (2025)
- $31,944
- -39.8% vs 2024
- Expenses (2025)
- $497
- -99.9% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who The Natasha & Dirk Ziff Foundation funds
How this funder distributes its grants
Grant Size Distribution
2 grants across all recorded years
The most common grant size was in the $500K–1M range: 1 grant of 2 (50%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
How The Natasha & Dirk Ziff Foundation gives
- Giving fell 69% from 2021 to 2024. Method
- In 2024 it paid out well above its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2024, annual grant giving ranged from $500K (2024) to $1.6M (2021). In 2024 it made 1 grant totaling $500K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Wildlife Conservation Society Bronx, NY | General Support | $500,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $747,938 | $29,639 | $497 | — | — | — | $31,944 | $35,806 |
| 2024 | $718,649 | $50,444 | $502,101 | $500,000 | 1 | $500,000 | $53,087 | $47,163 |
| 2023 | $1,170,164 | $52,880 | $426 | — | — | — | $52,880 | $55,726 |
| 2022 | $1,117,284 | $3,549 | $614 | — | — | $589 | $3,524 | $54,827 |
| 2021 | $1,114,349 | $110 | $1,600,000 | $1,600,000 | 1 | — | $110 | $54,865 |
| 2020 | $2,714,239 | $110 | $4,204 | — | — | — | $35 | $54,891 |
Under IRS private-foundation payout rules, The Natasha & Dirk Ziff Foundation reported a distributable amount of $36K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The Natasha & Dirk Ziff Foundation is led by Dirk E. Ziff, Co-President & Director on every filing since 2020; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Dirk E. Ziff
Co-President & Director
On filings since 2020
0 hrs/week
No compensation reported
Natasha B. Ziff
Co-President & Director
On filings since 2020
0 hrs/week
No compensation reported
Spencer Lehv
Vice President & Treasurer
On filings since 2020
0.1 hrs/week
No compensation reported
Marion Panas
Vice President & Secretary
On filings since 2021
0.1 hrs/week
No compensation reported
Former officers (2)
- Former: Brian Waxman (2020) — Vice President
- Former: Erica Lee (2020) — Vice President
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about The Natasha & Dirk Ziff Foundation
How large is The Natasha & Dirk Ziff Foundation?
The Natasha & Dirk Ziff Foundation reported $748K in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $30K.
Where does The Natasha & Dirk Ziff Foundation operate?
The Natasha & Dirk Ziff Foundation has awarded grants in California, New York.
How much is The Natasha & Dirk Ziff Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2025, The Natasha & Dirk Ziff Foundation reported a distributable amount of $36K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is The Natasha & Dirk Ziff Foundation's EIN?
The Natasha & Dirk Ziff Foundation's EIN (Employer Identification Number) is 13-4083748. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 7, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS September 13, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 9, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 10, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 10, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 11, 2026)
Explore Open Grants
Browse active grant opportunities in The Natasha & Dirk Ziff Foundation's focus areas in our free grants database
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