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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.

12 funders with a record of paying for “maddie”

Where the money went

1.0×
Dave & Cheryl Duffield Foundation → Pet Network Humane Society: $3.4M across 1 grant, latest 2023The Duffield Family Foundation → Regents of the University of California: $2.4M across 3 grants, latest 2023Golf Fights Cancer Inc → Maddie's Promise: $185K across 3 grants, latest 2024The Morehead-Cain Foundation → Maddie Miyares: $104K across 3 grants, latest 2023Mildred M Soefer Family Foundation → The Maddie Kramer Foundation: $65K across 5 grants, latest 2025The Wj Barney Foundation Inc → Maddie's Mark Foundation Inc: $42K across 4 grants, latest 2025Bikes Fight Cancer Inc → Magic for Maddie: $29K across 2 grants, latest 2025Ab Nicholas Scholarship Foundation → Maddie Crist: $25K across 3 grants, latest 2023Community Foundation of North Texas Inc → Cane Corso Rescue Inc: $23K across 3 grants, latest 2023Community Fdn of Greater Des Moines → Drake University: $16K across 1 grant, latest 2024Hudson Folkerts Memorial Foundation Inc → Maddie Posinski: $7K across 3 grants, latest 2024Norman & Elaine Polsky Family → Maddie's Mission: $6K across 4 grants, latest 2025The Duffield Family Foundation → Cornell University: $2.1M across 6 grants, latest 2024Dave & Cheryl Duffield Foundation → Nevada Spca: $29K across 1 grant, latest 2023Community Foundation of North Texas Inc → Trina and Friends K9 Rescue: $16K across 2 grants, latest 2023Community Fdn of Greater Des Moines → Boys & Girls Clubs of Central Iowa: $15K across 1 grant, latest 2024The Duffield Family Foundation → Open Door Veterinary Collective: $1.1M across 6 grants, latest 2024Dave & Cheryl Duffield Foundation → Hearts Alive Village: $24K across 1 grant, latest 2023Community Fdn of Greater Des Moines → Latina Leadership Initiative of Greater Des Moines: $7K across 1 grant, latest 2024The Duffield Family Foundation → University of Florida: $1.1M across 3 grants, latest 2023The Duffield Family Foundation → University of Wisconsin-Madison: $998K across 2 grants, latest 2024The Duffield Family Foundation → Team Shelter USA LLC: $790K across 4 grants, latest 2024The Duffield Family Foundation → Inquiring Systems Inc: $625K across 1 grant, latest 2024The Duffield Family Foundation → Austin Pets Alive: $375K across 1 grant, latest 2021The Duffield Family Foundation → University of Florida Foundation: $335K across 1 grant, latest 2024The Duffield Family Foundation → National Kitten College: $50K across 1 grant, latest 2024The Duffield Family Foundation → First Nations Veterinary: $10K across 1 grant, latest 2023The Duffield Family Foundation → The Retrievers: $10K across 1 grant, latest 2024The Duffield Family Foundation → Animal Welfare League of Arlington: $10K across 1 grant, latest 2023The Duffield Family Foundation → Michigan Humane: $10K across 1 grant, latest 2021The Duffield Family Foundation → National Animal Care & Control Association: $10K across 1 grant, latest 2021The Duffield Family Foundation → One Tail at A Time Nfp: $10K across 1 grant, latest 2024The Duffield Family Foundation → Black Pet Business Network: $10K across 1 grant, latest 2024Community Fdn of Greater Des Moines → The Directors Council: $7K across 1 grant, latest 2024The Duffield Family Foundation → Oakland Animal Services: $5K across 1 grant, latest 2023The Duffield Family Foundation → The Block Gives Back: $5K across 1 grant, latest 2023The Duffield Family Foundation → Housing Equality & Advocacy Resource Team: $5K across 1 grant, latest 2023The Duffield Family Foundation → Madison Cat Project: $5K across 1 grant, latest 2022The Duffield Family Foundation → Project Street Vet: $5K across 1 grant, latest 2023The Duffield Family Foundation → Awesiinyag Are Loved: $5K across 1 grant, latest 2023The Duffield Family Foundation: $9.9M on this topic. Open the funder.The Duffield Family Foundation$9.9MDave & Cheryl Duffield Foundation: $3.4M on this topic. Open the funder.Dave & Cheryl Duffield Founda…$3.4MGolf Fights Cancer Inc: $185K on this topic. Open the funder.Golf Fights Cancer Inc$185KThe Morehead-Cain Foundation: $104K on this topic. Open the funder.The Morehead-Cain Foundation$104KMildred M Soefer Family Foundation: $65K on this topic. Open the funder.Mildred M Soefer Family Found…$65KCommunity Fdn of Greater Des Moines: $44K on this topic. Open the funder.Community Fdn of Greater Des…$44KThe Wj Barney Foundation Inc: $42K on this topic. Open the funder.The Wj Barney Foundation Inc$42KCommunity Foundation of North Texas Inc: $39K on this topic. Open the funder.Community Foundation of North…$39KBikes Fight Cancer Inc: $29K on this topic. Open the funder.Bikes Fight Cancer Inc$29KAb Nicholas Scholarship Foundation: $25K on this topic. Open the funder.Ab Nicholas Scholarship Found…$25KHudson Folkerts Memorial Foundation Inc: $7K on this topic. Open the funder.Hudson Folkerts Memorial Foun…$7KNorman & Elaine Polsky Family: $6K on this topic. Open the funder.Norman & Elaine Polsky Family$6KPet Network Humane Society: received $3.4M on this topicPet Network Humane Society$3.4MRegents of the University of California: received $2.4M on this topicRegents of the University of Ca…$2.4MCornell University: received $2.1M on this topicCornell University$2.1MOpen Door Veterinary Collective: received $1.1M on this topicOpen Door Veterinary Collective$1.1MUniversity of Florida: received $1.1M on this topicUniversity of Florida$1.1MUniversity of Wisconsin-Madison: received $998K on this topicUniversity of Wisconsin-Madison$998KTeam Shelter USA LLC: received $790K on this topicTeam Shelter USA LLC$790KInquiring Systems Inc: received $625K on this topicInquiring Systems Inc$625KAustin Pets Alive: received $375K on this topicAustin Pets Alive$375KUniversity of Florida Foundation: received $335K on this topicUniversity of Florida Foundation$335KMaddie's Promise: received $185K on this topicMaddie's Promise$185KMaddie Miyares: received $104K on this topicMaddie Miyares$104KThe Maddie Kramer Foundation: received $65K on this topicThe Maddie Kramer Foundation$65KNational Kitten College: received $50K on this topicNational Kitten College$50KMaddie's Mark Foundation Inc: received $42K on this topicMaddie's Mark Foundation Inc$42KNevada Spca: received $29K on this topicNevada Spca$29KMagic for Maddie: received $29K on this topicMagic for Maddie$29KMaddie Crist: received $25K on this topicMaddie Crist$25KHearts Alive Village: received $24K on this topicHearts Alive Village$24KCane Corso Rescue Inc: received $23K on this topicCane Corso Rescue Inc$23KTrina and Friends K9 Rescue: received $16K on this topicTrina and Friends K9 Rescue$16KDrake University: received $16K on this topicDrake University$16KBoys & Girls Clubs of Central Iowa: received $15K on this topicBoys & Girls Clubs of Central I…$15KFirst Nations Veterinary: received $10K on this topicFirst Nations Veterinary$10KThe Retrievers: received $10K on this topicThe Retrievers$10KAnimal Welfare League of Arlington: received $10K on this topicAnimal Welfare League of Arling…$10KMichigan Humane: received $10K on this topicMichigan Humane$10KNational Animal Care & Control Association: received $10K on this topicNational Animal Care & Control…$10KOne Tail at A Time Nfp: received $10K on this topicOne Tail at A Time Nfp$10KBlack Pet Business Network: received $10K on this topicBlack Pet Business Network$10KMaddie Posinski: received $7K on this topicMaddie Posinski$7KLatina Leadership Initiative of Greater Des Moines: received $7K on this topicLatina Leadership Initiative of…$7KThe Directors Council: received $7K on this topicThe Directors Council$7KMaddie's Mission: received $6K on this topicMaddie's Mission$6KOakland Animal Services: received $5K on this topicOakland Animal Services$5KThe Block Gives Back: received $5K on this topicThe Block Gives Back$5KHousing Equality & Advocacy Resource Team: received $5K on this topicHousing Equality & Advocacy Res…$5KMadison Cat Project: received $5K on this topicMadison Cat Project$5KProject Street Vet: received $5K on this topicProject Street Vet$5KAwesiinyag Are Loved: received $5K on this topicAwesiinyag Are Loved$5K
12 funders, 40 recipients, grants matching “maddie” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 20192025. 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 →