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Data / Foundation grants / Mackesy Family Foundation

Mackesy Family Foundation: 18 grants to organizations, $2.9 million (tax year ended December 2024)

Mackesy Family Foundation, a private foundation in Bronxville, NY, paid 18 grants to organizations totaling $2,860,750 in its tax year ended December 2024, according to its Form 990-PF filed with the IRS on November 14, 2025. The largest was $1,343,000 to William & Mary Foundation in Williamsburg, VA for general support.

SpecStream is the live web data engine for teams and agents. It reads every private foundation's Form 990-PF as the IRS publishes it, and this page is that reading. Ask for the foundations that fund your cause in your state, with the amounts and purposes, and new grants arrive in your sheet, CRM, Slack or agent as the returns are filed.

EIN
472587937
Based in
Bronxville, NY
Assets
$29,447,547
Grants paid
$2,860,750
Tax year ended
December 2024

Grants paid, tax year ended December 2024

From the Form 990-PF filed November 14, 2025, IRS object ID 202533189349105103. It reported $2,860,750 in grants paid; 18 grants to organizations are listed.

RecipientLocationPurposeCauseAmountSource
William & Mary FoundationWilliamsburg, VAGeneral supportEducation$1,343,000apps.irs.gov
Graham WindhamBrooklyn, NYGeneral supportHuman services$633,000apps.irs.gov
Us SquashPhiladelphia, PAGeneral support$250,000apps.irs.gov
Princeton UniversityPrinceton, NJGeneral supportEducation$170,000apps.irs.gov
The Rockefeller UniversityNew York, NYGeneral supportEducation$125,000apps.irs.gov
Impact Through Golf FoundationLa Quinta, CAGeneral supportPhilanthropy, voluntarism and grantmaking foundations$90,000apps.irs.gov
Discovery Land Company FoundationBeverly Hills, CAGeneral supportPhilanthropy, voluntarism and grantmaking foundations$60,000apps.irs.gov
Lead AfricaNew York, NYGeneral supportEducation$50,000apps.irs.gov
Robin Hood FoundationNew York, NYGeneral supportPhilanthropy, voluntarism and grantmaking foundations$50,000apps.irs.gov
MainspringsTulsa, OKGeneral support$25,000apps.irs.gov
Grassroot SoccerHanover, NHGeneral supportRecreation and sports$21,250apps.irs.gov
American Foundation for Suicide PreventionNew York, NYGeneral supportMental health and crisis intervention$10,000apps.irs.gov
Destination CollegeBronxville, NYGeneral supportHuman services$10,000apps.irs.gov
Lake Waramaug Task ForceWarren, CTGeneral supportEnvironment$10,000apps.irs.gov
Breakthrough T1DNew York, NYGeneral supportDiseases, disorders and medical disciplines$5,000apps.irs.gov
Squash and Education AllianceNew York, NYGeneral supportRecreation and sports$5,000apps.irs.gov
Goodwill Industries International IncRockville, MDGeneral supportRecreation and sports$2,500apps.irs.gov
Black Players for ChangeChicago, ILGeneral support$1,000apps.irs.gov

Causes funded

From grants whose recipient has a cause.

States funded

Recipient stateGranted
Virginia$1,343,000
New York$888,000
Pennsylvania$250,000
New Jersey$170,000
California$150,000
Oklahoma$25,000
New Hampshire$21,250
Connecticut$10,000

Also on SpecStream

Updated November 14, 2025. Read from IRS Form 990-PF e-file data. Public domain (U.S. government work). Grants are as each foundation reported them to the IRS on its Form 990-PF. Grants to individuals are left out. A grant has a cause only where the recipient's name and city match one organization in the IRS Business Master File, and the cause is that organization's NTEE major group. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.