The Stephen & Suzanne Weiss Foundation I
The Stephen & Suzanne Weiss Foundation I is a private foundation based in Greenwich, Connecticut. Its 2025 filing lists grants to charitable organizations including schools, medical institutions, community organizations, and cultural and educational organizations.
The Stephen & Suzanne Weiss Foundation I at a glance
In short: The Stephen & Suzanne Weiss Foundation I gave $447K across 28 grants in 2025 (avg $16K), mostly in New York. 33% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $447,450
- +286.2% vs 2024
- Grants made (2025)
- 28
- +47.4% vs 2024
- Average grant
- $15,980
- +162.1% vs 2024
- Median grant
- $2,375
- Total assets
- $20,098
- -95.0% vs 2024
- New grantees (estimate)
- 33% first-time grantees (9 of 27, 2025)
- Primary geography
- New York (57% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to The Stephen & Suzanne Weiss Foundation I
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: Co Suzanne Weiss 62 Mason St 2W, Greenwich, CT 06830
Phone: (203) 861-2870
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who The Stephen & Suzanne Weiss Foundation I funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Greenwich Country Day ($150K). Together the top 10 received $333K.
Organizations only. It also paid 2 grants to individuals ($100,000), which are not listed by name.
Grant Size Distribution
107 grants across all recorded years
The most common grant size was under $50K: 101 grants of 107 (94%).
Geographic Focus
Where this funder awards grants
In 2025, 57% of grant dollars went to recipients in New York and 35% to recipients in Connecticut. The remaining reported shares went to Maryland (4%), Florida (2%), and Massachusetts (1%).
Grant Distribution by State
Share of 2025 grant dollars across all 28 itemized grants.
States
Cities
Is The Stephen & Suzanne Weiss Foundation I open to new grantees?
33%
first-time grantees, 2025
In 2025, 9 of 27 grantees (33%) were first-time recipients. First grants averaged $26K; repeat grants $12K. How we count
Medians: $18K first-time, $1K repeat.
- 67% of 2025 grantees were also funded in 2024. Method
- Giving grew 1303% from 2022 to 2025. Method
- In 2025 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $32K (2022) to $447K (2025). In 2025 it made 28 grants totaling $447K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Greenwich Country Day Greenwich, CT | General | $150,000 |
| Cornell University - President Micael Kotlikoff Discretionary Fund Ithaca, NY | General | $50,000 |
| 2 grants to individuals Recipients not named | — | $100,000 |
| New York Presbyterian Fund - Plates for Pediatrics New York, NY | General | $37,500 |
| Hospital for Special Surgery Foundation New York, NY | General | $25,000 |
| UJA Federation New York, NY | General | $20,000 |
| Breakthrough T1D Hagerstown, MD | General | $17,500 |
| Jewish Community Relations Council of New York New York, NY | General | $17,500 |
| Deerfield Academy Deerfield, MA | General | $5,000 |
| Jupiter Medical Center Foundation Jupiter, FL | General | $5,000 |
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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 | $20,098 | $77,982 | $460,414 | $447,450 | 28 | $452,860 | $70,678 | $17,560 |
| 2024 | $402,535 | $40,746 | $128,604 | $115,850 | 19 | $121,033 | $23,268 | $25,191 |
| 2023 | $490,393 | $41,813 | $98,027 | $86,300 | 18 | $90,862 | $27,823 | $27,233 |
| 2022 | $546,607 | $-17,513 | $44,901 | $31,900 | 21 | $36,200 | $2,924 | $30,124 |
| 2021 | $608,732 | $63,607 | $61,831 | $49,250 | 21 | $53,342 | $47,622 | $35,659 |
| 2020 | $606,739 | $72,346 | $245,137 | $232,950 | 25 | — | $56,384 | $39,300 |
Under IRS private-foundation payout rules, The Stephen & Suzanne Weiss Foundation I reported a distributable amount of $18K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2025 grants show support for organizations with varied purposes. For example, Jupiter Medical Center Foundation says its mission is to secure financial resources to sustain clinical excellence and quality of care at Jupiter Medical Center and its affiliates. The National Humanities Center describes itself as an independent institute dedicated to advanced study in the humanities, while Bridgeport Rescue Mission says it serves hungry, homeless, and addicted people throughout Fairfield County.
Grantmaking
In filing year 2025, the foundation reported 28 grants totaling $447,450. Grant amounts ranged from $100 to $150,000, with a median of $2,375. The largest grants included $150,000 to Greenwich Country Day in Greenwich, Connecticut; $50,000 each to Cornell University’s President Micael Kotlikoff Discretionary Fund in Ithaca, New York, and two funds at Weill Medical College in New York; and $37,500 to New York Presbyterian Fund for Plates for Pediatrics.
Other 2025 grants included $25,000 to Hospital for Special Surgery Foundation, $20,000 to UJA Federation, and $17,500 each to Breakthrough T1D and Jewish Community Relations Council of New York. The foundation also gave $5,000 to Jupiter Medical Center Foundation, $2,000 to the National Humanities Center, and $100 to Bridgeport Rescue Mission.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Suzanne Weiss as president and Michael D. Weiss as vice president.
The Stephen & Suzanne Weiss Foundation I is led by Suzanne Weiss, President on every filing since 2020; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Suzanne Weiss
President
On filings since 2020
2 hrs/week
No compensation reported
Michael D. Weiss
Vice President
On filings since 2020
2 hrs/week
No compensation reported
Former officers (1)
- Former: Roger J. Weiss (2020–2024) — Secretary & Treasurer · Filing note: Deceased
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 Stephen & Suzanne Weiss Foundation I
How much does The Stephen & Suzanne Weiss Foundation I give each year?
The Stephen & Suzanne Weiss Foundation I gave $447K across 28 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $116K across 19 grants.
What is The Stephen & Suzanne Weiss Foundation I's typical grant size?
The Stephen & Suzanne Weiss Foundation I's median grant in 2025 was $2,375, and its average grant was $15,980, across 28 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from The Stephen & Suzanne Weiss Foundation I that year got $26K on average.
Where does The Stephen & Suzanne Weiss Foundation I give grants?
The Stephen & Suzanne Weiss Foundation I gives mostly in New York: 57% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was Connecticut (35%). The most frequent recipient cities were New York, NY (7 grants), Greenwich, CT (6 grants), Ithaca, NY (2 grants) and Jupiter, FL (2 grants).
Does The Stephen & Suzanne Weiss Foundation I give general operating support?
Yes: 100% of The Stephen & Suzanne Weiss Foundation I's 2025 grants with a stated purpose (28 of 28) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are The Stephen & Suzanne Weiss Foundation I's largest grantees?
The Stephen & Suzanne Weiss Foundation I's largest 2025 grantees include Greenwich Country Day ($150,000), Cornell University - President Micael Kotlikoff Discretionary Fund ($50,000) and New York Presbyterian Fund - Plates for Pediatrics ($37,500), according to its 2025 IRS Form 990-PF. It also paid 2 grants to individuals ($100,000), which are not listed by name. Together they received 53% of its itemized 2025 grant dollars.
How large is The Stephen & Suzanne Weiss Foundation I?
The Stephen & Suzanne Weiss Foundation I reported $20K in total assets on its 2025 IRS Form 990-PF. It paid out $453K in qualifying distributions that year, against a required minimum of $18K (roughly 5% of its investment assets).
What does The Stephen & Suzanne Weiss Foundation I fund?
No mission statement for the foundation is provided. Its 2025 grants show support for organizations with varied purposes. See mission & focus areas ↑
How do I apply for a grant from The Stephen & Suzanne Weiss Foundation I?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is The Stephen & Suzanne Weiss Foundation I's EIN?
The Stephen & Suzanne Weiss Foundation I's EIN (Employer Identification Number) is 13-3384021. IRS Form 990 filing data is available on this page for 2020–2025.
Does The Stephen & Suzanne Weiss Foundation I accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
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 April 28, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS April 28, 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 March 26, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS March 11, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 11, 2026)
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Cite this profile
Grantable. (2026). The Stephen & Suzanne Weiss Foundation I funder profile. GrantGraph. Retrieved October 15, 2026, from https://grantable.co/funders/the-stephen-and-suzanne-weiss-foundation-i-morg_3d6e97700aab42c88b72e87a5ec820b0
BibTeX
@misc{grantable_133384021_2026,
author = {{Grantable}},
title = {{The Stephen \& Suzanne Weiss Foundation I funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/the-stephen-and-suzanne-weiss-foundation-i-morg_3d6e97700aab42c88b72e87a5ec820b0},
note = {Accessed 2026-10-15. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from The Stephen & Suzanne Weiss Foundation I'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.
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