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Form 990-PFTax year 2025EIN 85-3636639

Janet & Robert W Postma Foundation

A private foundation in Water Mill, NY. Its return for tax year 2025 lists 31 grants and $469,000 paid in grants.

See which foundations fund work like yours Matching by cause, place and grant size

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

6 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2025

    $469,000

    Grants listed
    31
    Assets, end of year
    $4,106,547

  • Tax year 2024

    $422,250

    Grants listed
    31
    Assets, end of year
    $4,911,738

  • Tax year 2023

    $101,000

    Grants listed
    15
    Assets, end of year
    $5,975,412

  • Tax year 2022

    $126,570

    Grants listed
    14
    Assets, end of year
    $6,119,368

  • Tax year 2021

    $149,720

    Grants listed
    14
    Assets, end of year
    $6,277,114

  • Tax year 2020

    $0

    Grants listed
    0
    Assets, end of year
    $4,996,000

Grants paid in 2025

31 grants, largest first

As listed on the return. Grants to individuals show as “Individual”, with purpose and amount only.

  1. Southhampton Hospital FoundationSouthampton, NY

    Tax Exempt Contribution

    $100,000
  2. North Sea Maritime CenterSouthampton, NY

    Tax Exempt Contribution

    $51,500
  3. HSS FoundationNew York, NY

    Tax Exempt Contribution

    $51,000
  4. Leadership RoundtableWashington, DC

    Tax Exempt Contribution

    $50,000
  5. Individual

    Tax Exempt Contribution

    $25,000
  6. EEDA FoundationRiverhead, NY

    Tax Exempt Contribution

    $20,000
  7. Ichan School of MedicineNew York, NY

    Tax Exempt Contribution

    $15,000
  8. Water Mill Improvement AssocWater Mill, NY

    Tax Exempt Contribution

    $15,000
  9. Sag Harbor Lions Club Pierson ScholSag Harbor, NY

    Tax Exempt Contribution

    $14,000
  10. MET PGA FoundationElmsford, NY

    Tax Exempt Contribution

    $11,000
  11. Individual

    Tax Exempt Contribution

    $11,000
  12. AJJ Scholarship FundSpeonk, NY

    Tax Exempt Contribution

    $10,000
  13. Individual

    Tax Exempt Contribution

    $10,000
  14. Carmel Connection FoundationPT Pleas BCH, NJ

    Tax Exempt Contribution

    $10,000
  15. Retreat IncEast Hampton, NY

    Tax Exempt Contribution

    $10,000
  16. Tomorrows Hope FoundationRockville Centre, NY

    Tax Exempt Contribution

    $10,000
  17. Break WaterSailing ClubSag Harbor, NY

    Tax Exempt Contribution

    $9,300
  18. Individual

    Tax Exempt Contribution

    $8,500
  19. SCO Family of ServicesGarden City, NY

    Tax Exempt Contribution

    $8,250
  20. Individual

    Tax Exempt Contribution

    $5,000
  21. Bridgehampton Lions ClubBridgehampton, NY

    Tax Exempt Contribution

    $5,000
  22. Road Forward Scholarship FundBridgehampton, NY

    Tax Exempt Contribution

    $5,000
  23. East Islip Soccer ClubEast Islip, NY

    Tax Exempt Contribution

    $2,500
  24. Kiwanis Club of SouthhamptonSouthampton, NY

    Tax Exempt Contribution

    $2,500
  25. Individual

    Tax Exempt Contribution

    $2,500
  26. Individual

    Tax Exempt Contribution

    $2,500
  27. 625 FoundationRupert, VT

    Tax Exempt Contribution

    $1,700
  28. Individual

    Tax Exempt Contribution

    $1,000
  29. Individual

    Tax Exempt Contribution

    $1,000
  30. Guild Hall of East HamptonEast Hampton, NY

    Tax Exempt Contribution

    $500
  31. MGA Caddie Scholarship FundElmsford, NY

    Tax Exempt Contribution

    $250

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education4 grants $66,70049% of the total
  2. Arts and culture2 grants $52,00038% of the total
  3. Human services2 grants $18,25013% of the total

By State

Grants to organizations with a US address, latest year.

  1. New York19 grants $340,800
  2. District of Columbia1 grant $50,000
  3. New Jersey1 grant $10,000
  4. Vermont1 grant $1,700

Officers, directors and trustees

3 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Robert W PostmaPresident Hours 1Pay $0
  • Janet WhalenVP Secretary Treasurer Hours 1Pay $0
  • Kristen SlaouiDirector Hours 1Pay $0

The return

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