Siegel Family Endowment
Siegel Family Endowment is a private foundation, based in New York, NY. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $568.1M in total assets. In 2024, it awarded 1 grant totaling $27.8M. Net investment income was $92.5M.
Siegel Family Endowment at a glance
In short: Siegel Family Endowment gave $27.8M across 1 grant in 2024 (avg $27.8M), mostly in New York. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $27,792,259
- +3.3% vs 2023
- Grants made (2024)
- 1
- +0.0% vs 2023
- Average grant
- $27,792,259
- +3.3% vs 2023
- Median grant
- $27,792,259
- Total assets
- $568,077,763
- +13.6% vs 2023
- Primary geography
- New York (100% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
Who Siegel Family Endowment funds
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was SEE Attachment 22 ($27.8M).
Grant Size Distribution
5 grants across all recorded years
The most common grant size was $5M or more: 5 grants of 5 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2024 grant dollars on its one itemized grant.
States
How Siegel Family Endowment gives
- Giving held roughly steady from 2021 to 2024 (+14%). Method
- In 2024 it paid out 151% of 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 2020 to 2024, annual grant giving ranged from $22.3M (2020) to $27.8M (2024). In 2024 it made 1 grant totaling $27.8M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| SEE Attachment 22 SEE Attachment, NY | SEE Attachment 22 | $27,792,259 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $568,077,763 | $67,551,252 | $36,979,586 | $27,792,259 | 1 | $33,158,791 | $92,475,843 | $21,913,010 |
| 2023 | $500,197,981 | $82,678,444 | $33,921,274 | $26,907,603 | 1 | $32,517,344 | $66,306,575 | $21,153,641 |
| 2022 | $459,837,619 | $55,005,359 | $30,513,404 | $24,771,536 | 1 | $31,632,642 | $80,733,978 | $20,046,419 |
| 2021 | $415,537,771 | $36,090,770 | $28,280,467 | $24,452,401 | 1 | $27,795,662 | $50,451,469 | $17,738,806 |
| 2020 | $382,748,141 | $15,153,824 | $25,530,157 | $22,332,225 | 1 | — | $32,837,860 | $17,344,222 |
Under IRS private-foundation payout rules, Siegel Family Endowment reported a distributable amount of $21.9M for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Siegel Family Endowment is led by Kathleen Knight, Executive Director & President on every filing since 2020; 1 of 5 officers listed in 2024 is compensated.
Officers on the 2024 filing
Kathleen Knight
Executive Director & President
On filings since 2020
50 hrs/week
No compensation reported
David M. Siegel
Director & Chairman
On filings since 2020
8 hrs/week
No compensation reported
Anzu Enterprises LLC
On filings since 2023
$551K (2023) → $561K (2024)
Richard A Sauer
Treasurer
On filings since 2020
3 hrs/week
No compensation reported
Sheri Vammen
Vice Chair & Secretary
On filings since 2020
2.5 hrs/week
No compensation reported
Former officers (1)
- Former: Two Sigma Investments Lp (2020–2022)
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $561K, to Anzu Enterprises LLC (0).
Frequently asked questions about Siegel Family Endowment
How much does Siegel Family Endowment give each year?
Siegel Family Endowment gave $27.8M across 1 grant in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $26.9M across 1 grant.
How large is Siegel Family Endowment?
Siegel Family Endowment reported $568.1M in total assets on its 2024 IRS Form 990-PF. It paid out $33.2M in qualifying distributions that year, against a required minimum of $21.9M (roughly 5% of its investment assets).
Where does Siegel Family Endowment operate?
Siegel Family Endowment has awarded grants in New York.
What is Siegel Family Endowment's EIN?
Siegel Family Endowment's EIN (Employer Identification Number) is 45-1742989. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated October 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 December 21, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 12, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS November 10, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 13, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 17, 2025)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in Siegel Family Endowment's focus areas in our free grants database
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