Funders › New York

The G Harold & Leila Y Mathers

Rye Brook, NY · EIN 23-7441901. Reported 345 grants totalling $65.9M to 68 recipients across tax years 2021-2024. This foundation did not tell the IRS it funds only preselected organizations.

Yesaccepts unsolicited requests
$219,024median grant
$65.9Mgranted, 2021-2024
68recipients, as named on its returns
88%of grantees funded again the next year
$392.6Massets, latest filing

Does this foundation accept applications?

Yes -- on its own tax return. Form 990-PF asks every private foundation whether it makes grants only to organizations it selects itself. Of the 91,758 foundations in our data that made a grant and answered, 78% said yes -- and applying to those is wasted effort. The G Harold & Leila Y Mathers did not check that box on its most recent filing, which puts it in the minority that is at least open to being approached.

This is the foundation's own statement to the IRS, not our judgement, and it says nothing about whether they have a form, a deadline, or an appetite for new grantees. Treat it as the reason this foundation is worth your research time, not as an invitation. Many small foundations of this kind have no website and no application process -- a letter of inquiry is the normal first step.

How big are its grants?

The median grant is $219,024. Half of everything it gave fell between $99,545 and $250,000; the smallest was $1,000 and the largest $813,103. If you are asking for materially more than the top of that range, you are asking the wrong foundation.

$1,000 - $5,000
1 grant
$5,000 - $10,000
19 grants
$10,000 - $25,000
42 grants
$25,000 - $50,000
18 grants
$50,000 - $100,000
7 grants
$100,000 and Up
258 grants

Every organization it funded

This is the complete list from its filings, largest first. Recipients are grouped by name and state as they were written on the returns, so an organization entered under two different names appears twice. Years funded is the number of separate tax years in which that name received money.

OrganizationLocationTotal receivedGrantsYears fundedLast
Dana-Farber Cancer InstituteBoston, MA$6,594,6662642024
Yale UniversityNew Haven, CT$4,522,1941842024
Rockefeller UniversityNew York, NY$4,304,5251942024
Children's Hospital Corp (boston Children's Hospital)Boston, MA$4,277,5131642024
Massachusetts Institute of TechnologyBoston, MA$3,939,1431742024
California Institute of TechnologyPasadena, CA$2,892,2971142024
Memorial Sloan-Kettering Cancer CenterNew York, NY$2,275,5001242024
Columbia UniversityNew York, NY$2,234,153942024
Leland Stanford Junior UniversityStanford, CA$2,140,9271042024
Vanderbilt University Medical CenterNashville, TN$2,117,827832024
Cleveland Clinic FoundationCleveland, OH$1,844,640832024
President and Fellows of Harvard CollegeBoston, MA$1,837,144842024
Cold Spring Harbor LaboratoryCold Spring Harbor, NY$1,681,981842024
Whitehead Institute for Biomedical ResearchCambridge, MA$1,316,372842024
New York UniversityNew York, NY$1,313,667832024
Duke UniversityDurham, NC$1,229,820642024
MD Anderson Cancer CenterHouston, TX$1,174,201642024
Salk Institute for Biological StudiesLa Jolla, CA$969,891432024
University of Massachusetts Medical SchoolAmherst, MA$911,869632023
CUNY Advanced Science Research CenterNew York, NY$824,229332024
Icahn School of Medicine at Mt SinaiNew York, NY$818,538442024
University of California San DiegoLa Jolla, CA$804,736542024
Albert Einstein College of MedicineBronx, NY$795,000632023
Weill Cornell Medical CollegeNew York, NY$734,161322024
Rice UniversityHouston, TX$692,161532023
University of California BerkeleyBerkeley, CA$672,176322024
Beth Israel Deaconess Medical CenterNew York, NY$661,097332024
The Wistar InstitutePhiladelphia, PA$657,443432024
Washington UniversitySt Louis, MO$647,087542024
New York University School of MedicineNew York, NY$592,166312021
University of PennsylvaniaPhiladelphia, PA$585,000322023
University of Kansas Center for Research IncLawrence, KS$569,548442024
Boston CollegeChestnut Hill, MA$551,683642024
The General Hospital Corp Dba Mass General HospitalBoston, MA$550,000222022
Thomas Jefferson UniversityPhiladelphia, PA$550,000332023
Massachusetts General HospitalBoston, MA$515,000322024
University of California Los AngelesPasadena, CA$466,668222024
Brandeis UniversityWaltham, MA$454,312222023
University of ChicagoChicago, IL$450,000332024
Carnegie InstitutionWashington, DC$433,990332023
Hauptman-Woodward Medical Research InstituteBuffalo, NY$429,254332024
Joslin Diabetes CenterBoston, MA$423,948222024
SUNY Stony Brook School of MedicineStony Brook, NY$410,506322022
The Scripps Research InstituteLa Jolla, CA$366,668222024
Northwestern UniversityEvanston, IL$331,988222024
Ut Southwestern Medical CenterDallas, TX$328,039222024
Georgia Institute of TechnologyAtlanta, GA$300,000222022
Texas A&m Argrilife ResearchCollege Station, TX$276,113222022
Case Western Reserve School of MedicineCleveland, OH$253,033222022
Case Western Reserve UniversityCleveland, OH$250,000112024
White Plains HospitalWhite Plains, NY$250,000112024
University of MichiganAnn Arbor, MI$249,984112024
Tufts CollegeMedford, MA$233,522112024
University of California San FranciscoSan Francisco, CA$233,333112023
Texas Heart InstituteHouston, TN$225,637222024
National Institutes of HealthNorth Bethesda, MD$204,769112024
University of Texas HoustonHouston, TX$136,971112021
Fox Chase Cancer CenterPhiladelphia, PA$125,000332023
Friends of Montecito LibrarySanta Barbara, CA$75,000442024
Hospice of Santa BarbaraSanta Barbara, CA$65,000442024
Santa Barbara Meals on WheelsSanta Barbara, CA$47,500442024
Garza County Historical MuseumPost, TX$34,000442024
South Plains College FoundationLevelland, TX$30,000442024
Levelland Wallace TheaterLevelland, TX$22,500332024
Caprock Cultural AssociationPost, TX$20,000442024
Johns Hopkins UniversityBaltimore, MD$14,964112024
Wallace TheaterLevelland, TX$7,500112021
Scarsdale Edgemont Family Counseling ServicesScarsdale, NY$1,000112024

57 of 68 (84%) received money in more than one year over the 4 years we hold.

Measured the way we measure every foundation -- what share of one year's grantees are funded again the next -- this one retains 88%, across 3 year-to-year transitions. The median foundation retains about 67%, so this one is unusually consistent. This measures how often it paid the same organizations again. It says nothing about whether it would consider a new one.

What kind of organizations it funds

By the activity category the IRS assigns each recipient, for the 199 grants where we could match the recipient to a registered organization. The categories are the IRS's. The match, made from the name and address on the return, is ours.

Education
101 grants
Medical Research
46 grants
Science & Technology
19 grants
Health Care
17 grants
Arts & Culture
8 grants
Food & Nutrition
4 grants
Diseases & Disorders
2 grants
Recreation & Sports
2 grants

Giving by year

Tax yearGrantsTotalMedian grant
202179$15.1M$199,552
202287$17.1M$227,046
202376$16.5M$208,865
2024103$17.3M$225,000

Tax years, not calendar years, and the most recent year is usually incomplete -- filings arrive about a year late, so a low final year means late paperwork rather than a foundation winding down.

Already committed for future years

Form 990-PF has a separate schedule for grants approved but not yet paid. The G Harold & Leila Y Mathers has 84 of them, worth $46.6M. This is the one part of the filing that looks forward rather than back.

OrganizationLocationApproved
Rockefeller UniversityNew York, NY$1,789,096
Yale UniversityNew Haven, CT$1,495,600
Dana-Farber Cancer InstituteBoston, MA$1,480,000
Columbia UniversityNew York, NY$1,355,825
Dana-Farber Cancer InstituteBoston, MA$1,240,000
Children's Hospital Corp (boston Children's Hospital)Boston, MA$1,144,474
Leland Stanford Junior UniversityStanford, CA$1,091,898
California Institute of TechnologyPasadena, CA$1,058,218
Vanderbilt University Medical CenterNashville, TN$1,023,619
Rockefeller UniversityNew York, NY$1,000,000
Cold Spring Harbor LaboratoryCold Spring Harbor, NY$997,728
President and Fellows of Harvard CollegeBoston, MA$980,000
President and Fellows of Harvard CollegeBoston, MA$953,523
Cleveland Clinic FoundationCleveland, OH$921,667
Washington UniversitySt Louis, MO$869,540

Where its money goes

33% of its giving went to organizations in Massachusetts. If your organization is based elsewhere, look in the recipient list for grants to your area before writing.

Massachusetts
$21.6M
New York
$17.3M
California
$8.7M
Connecticut
$4.5M
Texas
$2.7M
Ohio
$2.3M
Tennessee
$2.3M
Pennsylvania
$1.9M

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Funders that support the same organizations

These funders gave to organizations this one also funded -- some private foundations, some community foundations and other grantmaking charities. Shared grantees are a sign of overlapping priorities and nothing more: they do not show that any of these funders would consider a new organization. Each page says what its filings show.

Fidelity Investments Charitable Gift Fund18 shared recipientsDonor Advised Charitable Giving Inc18 shared recipientsVanguard Charitable Endowment Program17 shared recipientsNational Philanthropic Trust15 shared recipientsAmerican Online Giving Foundation Inc13 shared recipientsCharities Aid Foundation America12 shared recipients

How to approach this foundation

  1. Check you are its size. The median grant is $219,024. A request many times that size asks for something it has rarely or never given.
  2. Check you are in its geography. Its giving is concentrated in Massachusetts.
  3. Read the recipient list above for organizations like yours. If nothing on it resembles your work, that is a real answer, and a cheap one to get.
  4. Look up the current filing before writing. The 990-PF names the foundation's officers and, where one exists, its application procedure. We link it below.

Related guides

Foundations funding education in MassachusettsEvery funder in this groupFoundations funding education in New YorkEvery funder in this groupFoundations funding health care in New YorkEvery funder in this groupFoundations funding education in CaliforniaEvery funder in this group

Where these numbers come from

Everything above is taken from The G Harold & Leila Y Mathers's own Form 990-PF filings, which the IRS publishes in bulk. We used 4 returns (tax years 2021-2024). Grant figures are from its returns. Matching recipients to registered organizations, their IRS classifications, the retention rate and the funders that support the same organizations are our own calculations, described in how we build this.

Address of record on the latest return: 800 Westchester Avenue N-503, Rye Brook, NY, 10573. This is the address the foundation gave the IRS; many small foundations file through an accountant or a bank trust department, so it may not be where post to a programme officer should go.

EIN 23-7441901 · See the original filings on ProPublica · How we build this

This is history, not an open call. Foundation returns are published about a year after the tax year ends. Nothing on this page is a deadline. It is a record of who this foundation has actually funded.

Is something here wrong about your foundation? Email [email protected] and we will correct it.