Janet & Robert W Postma Foundation

WATER MILL, NY EIN: 85-3636639

Janet & Robert W Postma Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WATER MILL, NY. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $4.9M in total assets. In 2024, it awarded 31 grants totaling $422K.

Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$4.9M

-17.8% YoY

Annual Giving

$422K

+318.1% YoY

Grant Count

31

+106.7% YoY

Avg Grant Size

$14K

+102.3% YoY

About Janet & Robert W Postma Foundation

Based on IRS filings

Janet & Robert W Postma Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in WATER MILL, NY. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $4.9M in total assets. In 2024, it awarded 31 grants totaling $422K.

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

8states

Cities

BridgehamptonBrooklynChicagoEast HamptonEast IslipElmsfordGarden CityGermantownGlen CoveGlen RockGlenoldenHampton BaysKennesawNeedham HeightsNew YorkPoint Pleasant BeachRamseyRiverheadRochesterRoslyn

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$2M$4M$5M$7M20202021202220232024
Metric202420232022
Total Assets$4,911,738$5,975,412$6,119,368
Revenue$-593,380$-38,360$1,098
Expenses$470,294$105,596$158,844
Qualifying Distributions$468,450$103,557$134,790
Net Investment Income
Distributable Amount$499,906$285,656$243,698

Giving Over Time

Total grant dollars and number of grants per year

$0$106K$211K$317K$422K0 grants202014 grants202114 grants202215 grants202331 grants2024

Grant Insights

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2024

Southampton Hospital Fou…$150KMyriad USA$50KSt Francis Hospital Foun…$28KCMTA$25KIchan Schoold of Medicine$20KSag Harbor Lions Club Pi…$20KCarmel Connection Founda…$15KNorth Sea Maritime Center$10KRoad Forward Scholarship…$10KWater Mill Community Club$10K

Grant Size Distribution

74 grants across all recorded years

70<$50K3$50–100K1$100–250K$250–500K$500K–1M$1–5M$5M+

Giving History

Grant recipients and amounts by year

No grants recorded for .

Leadership & Key People

Officers and directors from IRS filings

Compensation Overview

From 2024 IRS filing

From 2024 filing

NameTitleHoursCompensation
Robert W PostmaPresident1
Janet WhalenVP Secretary Treasurer1
Kristen SlaouiDirector1

Subject Areas

Focus areas based on grantmaking activity

Related Funders

Similar funders by location and focus area

Data last updated April 2026. Sourced from IRS Form 990-PF filings.

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