Foundations · IRS 990 filings

Foundations in Southampton, New York

26
foundations with a Southampton address
$20.7M
grants paid, FY2023–FY2025
4
say they accept unsolicited
$6,255
median grant

Grantlas lists 26 foundations that gave a Southampton, New York address on their tax filing — 25 private foundations and 1 grantmaking charity — from filings for FY2023–FY2025. Together they paid out $20.7 million in grants in their latest filing year, and 4 of them (15%) say they accept unsolicited requests.

Not every foundation here is a Southampton foundation. The city is the mailing address on the foundation’s tax filing, and when a bank or a law firm runs the trust that is the bank’s address, not the place it gives to. Check where a foundation gives before you write.

All 26 foundations

Ranked by what they paid in grants in their latest filing, with the ones that accept unsolicited requests first, then the ones whose filing doesn’t say.

Foundations in Southampton, New York
Walentas Foundation LtdAccepts$7,500$2.5M$200–$505,000FY2024Locked: fit score and contacts
Charles D Farber MemorialAccepts$9,500$247,940$110–$25,000FY2024Locked: fit score and contacts
Halsey Family Foundation IncAccepts$500$26,400$250–$12,000FY2025Locked: fit score and contacts
Norsic Family Foundation IncAccepts$5,010$20,100$100–$20,000FY2025Locked: fit score and contacts
Southampton Bath & Tennis Club Charitable FundCommunity foundationNot stated$13,750Over $5k only$369,750$5,500–$75,000FY2025Locked: fit score and contacts
Thomas L Kempner Jr FoundationInvitation only$225,000$11.6M$5,000–$3.2MFY2024Locked: fit score and contacts
Muriel F Siebert Foundation IncInvitation only$10,000$2.3M$1,000–$165,000FY2025Locked: fit score and contacts
Yaffa Foundation IncInvitation only$10,000$1.7M$500–$400,000FY2024Locked: fit score and contacts
The Bandier Family Foundation IncInvitation only$5,000$560,698$100–$254,998FY2023Locked: fit score and contacts
Jaf FoundationInvitation only$2,500$359,500$2,500–$140,000FY2024Locked: fit score and contacts
The Swint FoundationInvitation only$20,000$158,640$10,000–$63,640FY2024Locked: fit score and contacts
The Kaneff Foundation IncInvitation only$1,549$138,216$360–$102,500FY2025Locked: fit score and contacts
Felberbaum Family FoundationInvitation only$1,750$126,540$100–$50,000FY2024Locked: fit score and contacts
The Malkenson FoundationInvitation only$4,000$118,950$500–$36,000FY2024Locked: fit score and contacts
Ann & John E Grimm III Foundation IncInvitation only$98,944$98,944—FY2024Locked: fit score and contacts
Irene Geller Scholarship FundInvitation only$95,500$96,700$94,300–$96,700FY2025Locked: fit score and contacts
Gregg's WingsInvitation only$55,000$55,000—FY2024Locked: fit score and contacts
Adler Hirsch FoundationInvitation only$1,000$53,000$500–$20,000FY2025Locked: fit score and contacts
William Mead Regan FoundationInvitation only$5,000$49,500$1,000–$10,000FY2025Locked: fit score and contacts
Mr & Mrs Everett E BrockettInvitation only$43,000$45,000$41,000–$45,000FY2025Locked: fit score and contacts
Kleinow Family Foundation IncInvitation only$35,442$37,149$33,735–$37,149FY2025Locked: fit score and contacts
Albert A Arditti Foundation IncInvitation only$1,000$30,000$500–$15,000FY2025Locked: fit score and contacts
Santa Maria Club IncInvitation only$3,300$16,500$500–$6,200FY2025Locked: fit score and contacts
The Tighe Hidalgo FoundationInvitation only$15,000$15,000—FY2024Locked: fit score and contacts
Elias Foundation IncInvitation only$1,671$14,342$1,000–$10,000FY2024Locked: fit score and contacts
Charles P Stevenson Terranova FoundationInvitation only$1,000$11,000$150–$10,000FY2025Locked: fit score and contacts
  • Median grant and grant range come from each funder’s grant schedule; a dash means there is none to report. Community foundations and other charities list only grants over $5,000, so their figures run high.
  • “One grant” means a schedule with a single grant — no median, nothing to range over. “One amount” means several grants, all the same size.

Data from 990-PF and Form 990 filings, FY2023–FY2025. Updated November 8, 2026.