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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 “mackinac”

Where the money went

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Donors Trust Inc → Mackinac Center for Public Policy: $7.1M across 3 grants, latest 2024The George G Fund → Mackinac Island Community Foundation: $1.4M across 3 grants, latest 2025The Lynde and Harry Bradley Foundation Inc → Mackinac Center for Public Policy: $1.4M across 3 grants, latest 2024Michigan Center for Rural Health → Mackinac Island Medical Center: $1.0M across 4 grants, latest 2024Dick and Betsy Devos Family Foundation → Mackinac Center: $500K across 4 grants, latest 2024Mackinac Island Community Foundation → Mackinac Island Medical Center: $489K across 4 grants, latest 2025Great Lakes Observing System Regional Association → Michigan Tech: $272K across 5 grants, latest 2024Richard and Jane Manoogian Foundation → Mackinac Straits Health Foundation: $200K across 2 grants, latest 2024Atlas Economic Research Foundation → Mackinac Center for Public Policy: $162K across 4 grants, latest 2025John and Judy Spoelhof Foundation → Mackinac Center for Public Policy: $85K across 4 grants, latest 2025Pulte Family Charitable Foundation → Mackinac Island Public School: $78K across 2 grants, latest 2024Lenfestey Family Foundation Inc → Mackinac Island Community Foundation: $29K across 4 grants, latest 2025Mackinac Island Community Foundation → City of Mackinac Island: $363K across 4 grants, latest 2025The George G Fund → Mackinac Associates: $250K across 3 grants, latest 2025Michigan Center for Rural Health → West Mackinac Health Association: $104K across 4 grants, latest 2024Pulte Family Charitable Foundation → Mackinac Island Public School: $33K across 1 grant, latest 2022Richard and Jane Manoogian Foundation → Mackinac Island Medical Center: $23K across 2 grants, latest 2024Lenfestey Family Foundation Inc → Mackinac Arts Council: $4K across 3 grants, latest 2025The George G Fund → Mackinac Horsemen's Association: $150K across 3 grants, latest 2025Mackinac Island Community Foundation → Mackinac Arts Council: $137K across 4 grants, latest 2025Michigan Center for Rural Health → Mackinac Straits Health System: $47K across 4 grants, latest 2024Richard and Jane Manoogian Foundation → Mackinac Associates: $15K across 2 grants, latest 2024Pulte Family Charitable Foundation → Mackinac Connect Foundation: $7K across 2 grants, latest 2024Lenfestey Family Foundation Inc → Mackinac Associates: $1K across 1 grant, latest 2025The George G Fund → Mackinac Straits Health Foundation: $150K across 2 grants, latest 2023Mackinac Island Community Foundation → Mackinac Island Housing Corporation: $131K across 3 grants, latest 2024Mackinac Island Community Foundation → Cheboygan Life Support Systems Inc Mackinac Ems: $124K across 1 grant, latest 2025The George G Fund → Mackinac Horsemens Associations: $100K across 1 grant, latest 2023The George G Fund → Mackinac Island Medical Center: $100K across 1 grant, latest 2025Mackinac Island Community Foundation → City of Mackinac Island - Public Library: $87K across 3 grants, latest 2025Mackinac Island Community Foundation → Mackinac Horsemen's Association Inc: $87K across 3 grants, latest 2025Mackinac Island Community Foundation → Cheyboygan Life Support Systems Inc Mackinac Ems: $58K across 1 grant, latest 2022Mackinac Island Community Foundation → Mackinac Island Public School: $51K across 4 grants, latest 2025The George G Fund → Mackinac Island Medical Center Inc: $50K across 1 grant, latest 2023Mackinac Island Community Foundation → Mackinac Associates: $50K across 1 grant, latest 2024Mackinac Island Community Foundation → Mackinac Connect Foundation: $46K across 3 grants, latest 2025Mackinac Island Community Foundation → Starling Shakespeare Company: $35K across 3 grants, latest 2025Mackinac Island Community Foundation → Mackinac Island Public Library: $29K across 1 grant, latest 2022Mackinac Island Community Foundation → Msrw: $26K across 2 grants, latest 2024Mackinac Island Community Foundation → Mackinac Straits Raptor Watch: $26K across 2 grants, latest 2025Mackinac Island Community Foundation → Mackinac Straits Hospital Foundation: $25K across 1 grant, latest 2025Mackinac Island Community Foundation → Mackinac State Historic Parks: $17K across 3 grants, latest 2025Mackinac Island Community Foundation → City of Mackinac Island-Recreation Director: $11K across 1 grant, latest 2023Richard and Jane Manoogian Foundation → Mackinac Island Community Foundatio: $10K across 1 grant, latest 2023Mackinac Island Community Foundation → Mackinac 4h Horse Club: $8K across 1 grant, latest 2022Richard and Jane Manoogian Foundation → Mackinac Arts Council: $7K across 2 grants, latest 2024Pulte Family Charitable Foundation → Mackinac Island Housing Corporation: $6K across 1 grant, latest 2022Mackinac Island Community Foundation → Mackinac Horsemen's Assocation: $5K across 1 grant, latest 2022Richard and Jane Manoogian Foundation → Mackinac Horsemen's Association: $3K across 1 grant, latest 2023Pulte Family Charitable Foundation → Mackinac Associates: $3K across 1 grant, latest 2023Richard and Jane Manoogian Foundation → Mackinac Horesmen's Association: $2K across 1 grant, latest 2024Donors Trust Inc: $7.1M on this topic. Open the funder.Donors Trust Inc$7.1MThe George G Fund: $2.2M on this topic. Open the funder.The George G Fund$2.2MMackinac Island Community Foundation: $1.8M on this topic. Open the funder.Mackinac Island Community Fou…$1.8MThe Lynde and Harry Bradley Foundation Inc: $1.4M on this topic. Open the funder.The Lynde and Harry Bradley F…$1.4MMichigan Center for Rural Health: $1.2M on this topic. Open the funder.Michigan Center for Rural Hea…$1.2MDick and Betsy Devos Family Foundation: $500K on this topic. Open the funder.Dick and Betsy Devos Family F…$500KGreat Lakes Observing System Regional Association: $272K on this topic. Open the funder.Great Lakes Observing System…$272KRichard and Jane Manoogian Foundation: $260K on this topic. Open the funder.Richard and Jane Manoogian Fo…$260KAtlas Economic Research Foundation: $162K on this topic. Open the funder.Atlas Economic Research Found…$162KPulte Family Charitable Foundation: $126K on this topic. Open the funder.Pulte Family Charitable Found…$126KJohn and Judy Spoelhof Foundation: $85K on this topic. Open the funder.John and Judy Spoelhof Founda…$85KLenfestey Family Foundation Inc: $34K on this topic. Open the funder.Lenfestey Family Foundation I…$34KMackinac Center for Public Policy: received $8.6M on this topicMackinac Center for Public Poli…$8.6MMackinac Island Medical Center: received $1.6M on this topicMackinac Island Medical Center$1.6MMackinac Island Community Foundation: received $1.5M on this topicMackinac Island Community Found…$1.5MMackinac Center: received $500K on this topicMackinac Center$500KCity of Mackinac Island: received $363K on this topicCity of Mackinac Island$363KMackinac Straits Health Foundation: received $350K on this topicMackinac Straits Health Foundat…$350KMackinac Associates: received $316K on this topicMackinac Associates$316KMichigan Tech: received $272K on this topicMichigan Tech$272KMackinac Horsemen's Association: received $153K on this topicMackinac Horsemen's Association$153KMackinac Arts Council: received $148K on this topicMackinac Arts Council$148KMackinac Island Housing Corporation: received $137K on this topicMackinac Island Housing Corpora…$137KCheboygan Life Support Systems Inc Mackinac Ems: received $124K on this topicCheboygan Life Support Systems…$124KWest Mackinac Health Association: received $104K on this topicWest Mackinac Health Association$104KMackinac Horsemens Associations: received $100K on this topicMackinac Horsemens Associations$100KCity of Mackinac Island - Public Library: received $87K on this topicCity of Mackinac Island - Publi…$87KMackinac Horsemen's Association Inc: received $87K on this topicMackinac Horsemen's Association…$87KMackinac Center for Public Policy: received $85K on this topicMackinac Center for Public Poli…$85KMackinac Island Public School: received $84K on this topicMackinac Island Public School$84KMackinac Island Public School: received $78K on this topicMackinac Island Public School$78KCheyboygan Life Support Systems Inc Mackinac Ems: received $58K on this topicCheyboygan Life Support Systems…$58KMackinac Island Medical Center Inc: received $50K on this topicMackinac Island Medical Center…$50KMackinac Straits Health System: received $47K on this topicMackinac Straits Health System$47KMackinac Connect Foundation: received $46K on this topicMackinac Connect Foundation$46KStarling Shakespeare Company: received $35K on this topicStarling Shakespeare Company$35KMackinac Island Public Library: received $29K on this topicMackinac Island Public Library$29KMsrw: received $26K on this topicMsrw$26KMackinac Straits Raptor Watch: received $26K on this topicMackinac Straits Raptor Watch$26KMackinac Straits Hospital Foundation: received $25K on this topicMackinac Straits Hospital Found…$25KMackinac State Historic Parks: received $17K on this topicMackinac State Historic Parks$17KCity of Mackinac Island-Recreation Director: received $11K on this topicCity of Mackinac Island-Recreat…$11KMackinac Island Community Foundatio: received $10K on this topicMackinac Island Community Found…$10KMackinac 4h Horse Club: received $8K on this topicMackinac 4h Horse Club$8KMackinac Connect Foundation: received $7K on this topicMackinac Connect Foundation$7KMackinac Horsemen's Assocation: received $5K on this topicMackinac Horsemen's Assocation$5KMackinac Associates: received $3K on this topicMackinac Associates$3KMackinac Horesmen's Association: received $2K on this topicMackinac Horesmen's Association$2K
12 funders, 36 recipients, grants matching “mackinac” 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 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 →