Private foundation · EIN 20-6382658 · Greenwich, Connecticut · Philanthropy & grantmaking

The Per and Astrid Heidenreich Family Foundation

Should you approach them?

Don't send a cold proposal. The foundation reports that it only gives to preselected organizations; an introduction through a current grantee or board member is the realistic route.

From the 2025 Form 990-PF: 64 grants paid, $1.1M total, median $4,750. 59% of grants stayed in Connecticut.

Accepts applications
No
per 990-PF Part XV
Grants paid, 2025
64
$1.1M
Median grant
$4,750
Stays in CT
59%
of grants
Deadline
—
Assets
$18M

Grants paid in 2025

Top 60 of 64 grants by amount · from Form 990-PF Part XV

RecipientPurposeAmount
Fau Foundation IncBoca Raton, FLGeneral purpose$130K
Boys and Girls Club of GreenwichGreenwich, CTGeneral purpose$129K
Let's Get ReadyNew York, NYGeneral purpose$100K
Norwalk ActsNorwalk, CTGeneral purpose$100K
The Carver FoundationNorwalk, CTGeneral purpose$100K
Banner Lake Club IncHobe Sound, FLGeneral purpose$83K
Southern Connecticut State UniversityNew Haven, CTGeneral purpose$60K
Norwalk Hospital FoundationNorwalk, CTGeneral purpose$50K
Family and Children's AgencyNorwalk, CTGeneral purpose$25K
Leap IncNew Haven, CTGeneral purpose$25K
Boys and Girls Club of Martin CountyHobe Sound, FLGeneral purpose$20K
Horizons Greens Farm AcademyBridgeport, CTGeneral purpose$20K
Stamford Hospital FoundationStamford, CTGeneral purpose$20K
Mystic AquariumMystic, CTGeneral purpose$19K
Teach for AmericaNew York, NYGeneral purpose$15K
Cma Education Foundation IncStamford, CTGeneral purpose$10K
Delmar FarmLoxahatchee, FLGeneral purpose$10K
Greenwich Athletic FoundationCos Cob, CTGeneral purpose$10K
Hope Rural SchoolIndiantown, FLGeneral purpose$10K
Loblolly Community FoundationHobe Sound, FLGeneral purpose$10K
Martin Memorial Health SystemsStuart, FLGeneral purpose$10K
Norwalk Housing FoundationNorwalk, CTGeneral purpose$10K
Project LiftHobe Sound, FLGeneral purpose$10K
The Matthew Gaffney FoundationStamford, CTGeneral purpose$10K
4-CtNew Haven, CTGeneral purpose$9,000
Greenwich Youth FootballGreenwich, CTGeneral purpose$7,300
Swim Across AmericaRidgefield, CTGeneral purpose$5,500
American Red CrossFarmington, CTGeneral purpose$5,000
New Canaan Nature CenterNew Canaan, CTGeneral purpose$5,000
The Everglades FoundationPalmetto Bay, FLGeneral purpose$5,000
The Hobe Sound Community ChestHobe Sound, FLGeneral purpose$5,000
Weimaraner Rescue of the NorthCassadaga, NYGeneral purpose$5,000
Ybi CtNorwalk, CTGeneral purpose$4,500
Cardinal Shehan CenterBridgeport, CTGeneral purpose$4,000
Maltz Jupiter TheatreJupiter, FLGeneral purpose$3,000
Stamford Police FoundationStamford, CTGeneral purpose$3,000
Department of Social ServicesHartford, CTGeneral purpose$2,500
Stamford Citizen of the YearStamford, CTGeneral purpose$2,500
American Scandinavian FoundationNew York, NYGeneral purpose$2,000
Branford Fire & RescueBranford, CTGeneral purpose$2,000
Branford Food PantryBranford, CTGeneral purpose$2,000
Branford Land TrustBranford, CTGeneral purpose$2,000
Dan Cosgrove Animal ShelterBranford, CTGeneral purpose$2,000
Friends of MusicStamford, NYGeneral purpose$2,000
Hobe Sound Nature CenterHobe Sound, FLGeneral purpose$2,000
Legacy TheatreBranford, CTGeneral purpose$2,000
Boys and Girls Club of StamfordStamford, CTGeneral purpose$1,500
Greenwich Police Scholarship FoundationGreenwich, CTGeneral purpose$1,500
Norwalk Public SchoolsNorwalk, CTGeneral purpose$1,500
Connecticut Humane SocietyWilton, CTGeneral purpose$1,000
Dipg FoundationSaline, MIGeneral purpose$1,000
Greenwich Country ClubGreenwich, CTGeneral purpose$1,000
Kids Helping KidsStamford, CTGeneral purpose$1,000
SUNY Maritime Foundation IncBronx, NYGeneral purpose$1,000
Tarheel Weimaraner RescueMint Hill, NCGeneral purpose$1,000
A New Chance Animal RescueBedford Hills, NYGeneral purpose$500
Adopt a DogArmonk, NYGeneral purpose$500
FIRST Tee of ConnecticutCromwell, CTGeneral purpose$500
Food Rescue USStamford, CTGeneral purpose$500
Greenwich Symphony OrchestraGreenwich, CTGeneral purpose$500

By state: Connecticut 38 · Florida 12 · New York 10 · North Carolina 2 · Michigan 1 · New Mexico 1

About this foundation

The Per and Astrid Heidenreich Family Foundation is a private grantmaking foundation in Greenwich, Connecticut, administered in care of Wtas LLC, tax-exempt since 2005. Private foundations must pay out roughly 5% of their assets each year, mostly as grants to 501(c)(3) public charities.

All filings on ProPublica

Does The Per and Astrid Heidenreich Family Foundation accept grant applications?

No. On its 2025 Form 990-PF the foundation checked that it only makes contributions to preselected organizations. Look for an introduction through a current grantee.

How much does The Per and Astrid Heidenreich Family Foundation give each year?

In tax year 2025 it paid $1.1M across 64 grants, a median of $4,750.

Where does The Per and Astrid Heidenreich Family Foundation give?

Connecticut (38 grants), Florida (12 grants), New York (10 grants) and elsewhere, per its latest filing.

More foundations near Greenwich that accept applications

All in Connecticut
FoundationBased inGrants paidMedian grantAccepts applicationsAssets
Zoom Foundationsince 2001 Greenwich, CT $30M7 grants · 2024 $175KPreselected only $1.5B
Jane and Daniel Och Family Foundationsince 2009 Greenwich, CT $31M2 grants · 2024 $15MPreselected only $523M
Edward John Noble Foundation Incsince 1981 Greenwich, CT $5.0M41 grants · 2024 $10KYes $121M
Royce Family Fund Incsince 1986 Greenwich, CT $5.9M100 grants · 2024 $10KPreselected only $97M
Michael and Carol Lowenstein Foundation Incsince 2009 Greenwich, CT $3.4M16 grants · 2024 $90KPreselected only $89M
S & L Marx Foundation Incsince 2004 Greenwich, CT — —Not stated $83M
Azcat Foundationsince 2017 Greenwich, CT $6.6M1 grants · 2025 $6.6MPreselected only $66M
Lone Pine Foundation Incsince 2002 Greenwich, CT $10M1 grants · 2024 $10MPreselected only $59M
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