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Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.
11 funders with a record of paying for “horwitz”
Where the money went
Largest: $160,000 to JEWISH FUNDERS NETWORK — to support an engagement in partnership with rosov consulting and dr. ilana horwitz focused on learning and analysis about poverty in the jewish community.
Largest: $7,000 to NACHMAN HORWITZ — welfare assistance
Largest: $3,000 to HORWITZ-DEREMER PLANETARIUM — improving audio system to enable those with hearing impairments to connect their personal devices
Connelly FoundationWest Conshohocken, PA
1 matching grant · $125,000 · through 2024Largest: $125,000 to PHILADELPHIA YOUTH BASKETBALL — alan horwitz sixth man center
Rubin Family FoundationConshohocken, PA
1 matching grant · $60,000 · through 2022Largest: $60,000 to PHILADELPHIA HOLOCAUST REMEMBRANCE FOUNDATION INC — to support the holocaust education goals and the horwitz-wasserman holocaust memorial
Largest: $7,500 to RATTLESTICK PRODUCTIONS INC — two sisters find a box of lesbian erotica in the woods written by bailey williams and emma horwitz
Largest: $2,500 to DAVID HORWITZ FREEDOM CENTER — promotes defense of free societies
Largest: $50,000 to PHILADELPHIA YOUTH BASKETBALL — capital pledge to support pyb's effort to construct the alan horwitz sixth man center (3 of 3 installments)
Leeway FoundationPhiladelphia, PA
1 matching grant · $2,500 · through 2022Largest: $2,500 to HORWITZ KARAHERE AND NOW ZINES — woo community care fund
Leo Model FoundationPhiladelphia, PA
1 matching grant · $1,000 · through 2022Largest: $1,000 to PHILADELPHIA HOLOCAUST REMEMBRANCE FOUNDATION — support horwitz-wasserman holocaust memorial plaza-the only monument to the holocaust in philadelphia
Judy & Donald Smith Family FoundationPalm Beach Gardens, FL
1 matching grant · $1,000 · through 2022Largest: $1,000 to REDLICH HORWITZ FOUNDATION — general charitable
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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 2019–2025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →