Grants paid by Harry F Mariani Family Foundation
EIN 84-3901549 · Locust Valley, NY · Form 990-PF, Part XV · NTEE T22
Harry F Mariani Family Foundation of Locust Valley, NY (EIN 84-3901549) reported 106 grants paid totaling $1,312,000 to 38 recipients in tax years 2021–2025, on Form 990-PF, Part XV. Derived from IRS e-file data, dataset version 2026.09.0, built 2026-09-03.
Grants paid
$1,312,000
106 grants
Recipients
38
distinct organizations
Tax years
2021–2025
5 filings in the corpus
By tax year
| Tax year | Grants paid | Amount paid | Approved for future |
|---|---|---|---|
| 2021 | 29 | $280,000 | — |
| 2022 | 25 | $320,000 | — |
| 2023 | 24 | $240,000 | — |
| 2024 | 14 | $200,000 | — |
| 2025 | 14 | $272,000 | — |
Top recipients
The 38 recipients receiving the most from Harry F Mariani Family Foundation, by grants paid, out of 38 distinct recipients.
| Recipient | Match | Location | Grants | Total paid | Latest year |
|---|---|---|---|---|---|
| Tisch Multiple Sclerosis Research Center New York Inc 25-1922851 | C | New York, NY | 5 | $290,000 | 2025 |
| Northwell Health Foundation 11-2965575 | C | Huntington, NY | 5 | $267,000 | 2025 |
| The Beaufort County Open Land Trust Inc 23-7114992 | C | Beaufort, SC | 4 | $145,000 | 2025 |
| University of Notre Dame 52-1539710 | B | Notre Dame, IN | 5 | $125,000 | 2025 |
| Pingree School 04-2279977 | B | South Hamilton, MA | 5 | $77,000 | 2025 |
| The Don Monti Memorial Research Foundation 23-7250667 | C | Cold Spring Harbor, NY | 4 | $44,000 | 2025 |
| Mercy Home for Boys and Girls | U | Chicago, IL | 2 | $40,000 | 2022 |
| Coastal Conservation Association South Carolina | U | Columbia, SC | 3 | $35,000 | 2025 |
| St Joseph's Children's Hospital Tampa | U | Tampa, FL | 5 | $31,500 | 2025 |
| Tulane University | U | Dallas, TX | 3 | $30,000 | 2025 |
| Community Dispute Settlement Center 04-3030799 | B | Cambridge, MA | 5 | $15,500 | 2025 |
| Tomorrow's Hope Foundation 84-4265021 | C | Uniondale, NY | 2 | $15,000 | 2022 |
| Cornell Hotel Society | U | Vienna, VA | 2 | $14,000 | 2022 |
| Lowcountry Food Bank 57-0751835 | B | Charleston, SC | 4 | $13,750 | 2025 |
| Howard University 53-0204707 | C | Washington, DC | 3 | $11,000 | 2023 |
| St Jude's Children's Research Hospital 62-0646012 | D | Memphis, TN | 3 | $11,000 | 2023 |
| Boston Children's Hospital Trust | U | Boston, MA | 3 | $11,000 | 2023 |
| North Charleston Animal Society | U | North Charleston, SC | 5 | $11,000 | 2025 |
| Minuteman Senior Services 04-2587212 | C | Bedford, MA | 4 | $10,500 | 2025 |
| Beaufort Memorial Hospital Foundation 57-0792360 | C | Beaufort, SC | 1 | $10,000 | 2023 |
| Sea Island Habitat for Humanity | U | Johns Island, SC | 1 | $10,000 | 2021 |
| The First Tee of Greater Charleston 20-3959266 | C | Mt Pleasant, SC | 1 | $10,000 | 2021 |
| One80 Place | U | Charleston, SC | 4 | $9,500 | 2025 |
| Youth Advocacy Foundation 04-3583353 | C | Boston, MA | 3 | $9,000 | 2023 |
| Winchester Abc | U | Winchester, MA | 3 | $8,500 | 2023 |
| The Fenn School 04-2104064 | B | Concord, MA | 3 | $7,500 | 2023 |
| American Friends of the London Philharmonic Orchestra 23-7003075 | B | New York, NY | 2 | $7,500 | 2024 |
| Heading Home 23-7364546 | B | Boston, MA | 3 | $6,500 | 2023 |
| Keep North Charleston Beautiful 57-1107432 | D | North Charleston, SC | 2 | $6,000 | 2022 |
| Friends of Middlesex Fells | U | Melsrose, MA | 3 | $5,500 | 2023 |
| Penn Center National Historic Landmark District | U | St Helena Island, SC | 1 | $5,000 | 2023 |
| Hospital for Special Surgery 13-1624135 | B | New York, NY | 1 | $5,000 | 2021 |
| Williams College 04-2104847 | B | Williamstown, MA | 1 | $5,000 | 2021 |
| Pink Aid 47-1031835 | C | Westport, CT | 1 | $3,000 | 2021 |
| St Francis Food Pantries and Shelters 80-0458866 | B | New York, NY | 1 | $3,000 | 2021 |
| Third Option Foundation 46-4884866 | B | Reston, VA | 1 | $2,000 | 2021 |
| Neighbors Together 57-0794782 | B | North Charleston, SC | 1 | $1,250 | 2023 |
| The Church of Saint Paul the Apostle | U | New York, NY | 1 | $500 | 2022 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Every grant
All 106 grant rows this organization reported, most recent first.
| Tax year | Recipient | Match | Amount | Type | Purpose | Source filing |
|---|---|---|---|---|---|---|
| 2025 | Tisch Multiple Sclerosis Research Center New York Inc New York, NY | C | $68,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Northwell Health Foundation Huntington, NY | C | $56,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | The Beaufort County Open Land Trust Inc Beaufort, SC | C | $50,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Pingree School South Hamilton, MA | B | $27,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | University of Notre Dame Notre Dame, IN | B | $25,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | The Don Monti Memorial Research Foundation Cold Spring Harbor, NY | C | $12,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Coastal Conservation Association South Carolina Columbia, SC | U | $10,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Tulane University Dallas, TX | U | $10,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | St Joseph's Children's Hospital Tampa Tampa, FL | U | $4,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Minuteman Senior Services Bedford, MA | C | $3,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Community Dispute Settlement Center Cambridge, MA | B | $3,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | Lowcountry Food Bank Charleston, SC | B | $1,500 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | North Charleston Animal Society North Charleston, SC | U | $1,500 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2025 | One80 Place Charleston, SC | U | $1,000 | paid | GENERAL SUPPORT | 202631049349100633 |
| 2024 | Northwell Health Foundation Huntington, NY | C | $50,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Tisch Multiple Sclerosis Research Center New York Inc New York, NY | C | $45,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | The Beaufort County Open Land Trust Inc Beaufort, SC | C | $30,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | University of Notre Dame Notre Dame, IN | B | $25,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Coastal Conservation Association South Carolina Columbia, SC | U | $15,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Pingree School South Hamilton, MA | B | $10,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Tulane University Dallas, TX | U | $10,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | American Friends of the London Philharmonic Orchestra New York, NY | B | $5,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | St Joseph's Children's Hospital Tampa Tampa, FL | U | $2,500 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Minuteman Senior Services Bedford, MA | C | $2,500 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Community Dispute Settlement Center Cambridge, MA | B | $2,500 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | North Charleston Animal Society North Charleston, SC | U | $1,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | Lowcountry Food Bank Charleston, SC | B | $1,000 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2024 | One80 Place Charleston, SC | U | $500 | paid | GENERAL SUPPORT | 202500999349100510 |
| 2023 | Tisch Multiple Sclerosis Research Center New York Inc New York, NY | C | $60,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Northwell Health Foundation Huntington, NY | C | $48,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | The Beaufort County Open Land Trust Inc Beaufort, SC | C | $25,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | University of Notre Dame Notre Dame, IN | B | $25,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | The Don Monti Memorial Research Foundation Cold Spring, NY | C | $12,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Coastal Conservation Association South Carolina Columbia, SC | U | $10,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Beaufort Memorial Hospital Foundation Beaufort, SC | C | $10,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Tulane University Dallas, TX | U | $10,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Pingree School South Hamilton, MA | B | $10,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Penn Center National Historic Landmark District St Helena Island, SC | U | $5,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | St Joseph's Children's Hospital Tampa Tampa, FL | U | $5,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | North Charleston Animal Society North Charleston, SC | U | $2,500 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Community Dispute Settlement Center Cambridge, MA | B | $2,500 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | The Fenn School Concord, MA | B | $2,500 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Youth Advocacy Foundation Boston, MA | B | $2,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Minuteman Senior Services Bedford, MA | C | $2,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Winchester Abc Winchester, MA | U | $1,500 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Neighbors Together North Charleston, SC | B | $1,250 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Lowcountry Food Bank Charleston, SC | B | $1,250 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Heading Home Charlestown, MA | C | $1,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Boston Children's Hospital Trust Boston, MA | U | $1,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | St Jude's Children's Research Hospital Memphis, TN | D | $1,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Howard University Washington, DC | C | $1,000 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2023 | Friends of Middlesex Fells Melsrose, MA | U | $500 | paid | GENERAL SUPPORT | 202420879349100407 |
| 2022 | Tisch Multiple Sclerosis Research Center New York Inc New York, NY | C | $67,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Northwell Health Foundation Huntington, NY | C | $60,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | The Beaufort County Open Land Trust Inc Beaufort, SC | C | $40,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | University of Notre Dame Notre Dame, IN | B | $25,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Mercy Home for Boys and Girls Chicago, IL | U | $20,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Pingree School South Hamilton, MA | B | $20,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | St Joseph's Children's Hospital Tampa Tampa, FL | U | $10,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Tomorrow's Hope Foundation Uniondale, NY | C | $10,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Cornell Hotel Society Vienna, VA | U | $10,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | The Don Monti Memorial Research Foundation Cold Spring Harbor, NY | C | $10,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Howard University Washington, DC | C | $5,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | St Jude's Children's Research Hospital Memphis, TN | D | $5,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Boston Children's Hospital Trust Boston, MA | U | $5,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | One80 Place Charleston, SC | U | $4,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Community Dispute Settlement Center Cambridge, MA | B | $3,500 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Keep North Charleston Beautiful North Charleston, SC | D | $3,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | North Charleston Animal Society North Charleston, SC | U | $3,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Winchester Abc Winchester, MA | U | $3,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Minuteman Senior Services Bedford, MA | C | $3,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Youth Advocacy Foundation Boston, MA | C | $3,000 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | American Friends of the London Philharmonic Orchestra New York, NY | B | $2,500 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | The Fenn School Concord, MA | B | $2,500 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Friends of Middlesex Fells Melsrose, MA | U | $2,500 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | Heading Home Boston, MA | B | $2,500 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2022 | The Church of Saint Paul the Apostle New York, NY | U | $500 | paid | GENERAL SUPPORT | 202311309349102861 |
| 2021 | Northwell Health Foundation Huntington, NY | C | $53,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Tisch Multiple Sclerosis Research Center New York Inc New York, NY | C | $50,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | University of Notre Dame Notre Dam, IN | B | $25,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Mercy Home for Boys and Girls Chicago, IL | U | $20,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | St Joseph's Children's Hospital Tampa Tampa, FL | U | $10,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Don Monti Memorial Research Foundation Cold Spring Harbor, NY | C | $10,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Pingree School South Hamilton, MA | B | $10,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Lowcountry Food Bank Charleston, SC | B | $10,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | The First Tee of Greater Charleston Mt Pleasant, SC | C | $10,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Sea Island Habitat for Humanity Johns Island, SC | U | $10,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Williams College Williamstown, MA | B | $5,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Howard University Washington, DC | C | $5,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Hospital for Special Surgery New York, NY | B | $5,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Tomorrow's Hope Foundation Uniondale, NY | C | $5,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | St Jude's Children's Research Hospital Memphis, TN | D | $5,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Boston Children's Hospital Trust Boston, MA | U | $5,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Community Dispute Settlement Center Cambridge, MA | C | $4,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Cornell Hotel Society Vienna, VA | U | $4,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Winchester Abc Winchester, MA | U | $4,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Youth Advocacy Foundation Boston, MA | C | $4,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | One80 Place Charleston, SC | U | $4,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | St Francis Food Pantries and Shelters New York, NY | B | $3,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Heading Home Charleston, MA | C | $3,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Keep North Charleston Beautiful North Charleston, SC | D | $3,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Pink Aid Westport, CT | C | $3,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | North Charleston Animal Society North Charleston, SC | U | $3,000 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Friends of Middlesex Fells Melrose, MA | U | $2,500 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | The Fenn School Concord, MA | B | $2,500 | paid | GENERAL SUPPORT | 202211649349100556 |
| 2021 | Third Option Foundation Reston, VA | B | $2,000 | paid | GENERAL SUPPORT | 202211649349100556 |
Match tier: A Reported EIN · B Exact name and place · C Strong name match · D Probable name match · U Unresolved. Tiers C and D are inferred, not reported; see how matching works.
Recipient matching for this dataset version has not yet completed its independent precision check. Tier A rows carry the EIN the filer reported; tiers B–D are the matcher's inference and should be read as leads until the check is published on the methodology page.
Source filings
Every figure above is traceable to one of these IRS e-file returns by its OBJECT_ID.
| Form | Tax year | Period end | Filed | Schema | IRS OBJECT_ID |
|---|---|---|---|---|---|
| 990PF | 2025 | 2025-12-31 | not stated | 2025v4.1 | 202631049349100633 |
| 990PF | 2024 | 2024-12-31 | not stated | 2024v5.1 | 202500999349100510 |
| 990PF | 2023 | 2023-12-31 | not stated | 2023v5.0 | 202420879349100407 |
| 990PF | 2022 | 2022-12-31 | not stated | 2022v5.0 | 202311309349102861 |
| 990PF | 2021 | 2021-12-31 | not stated | 2021v4.2 | 202211649349100556 |
Derived from IRS Form 990-PF e-file XML; recipient identities from the IRS Exempt Organizations Business Master File. Dataset version 2026.09.0, built 2026-09-03. The same rows as Parquet: manifest; as JSON: /api/funders/843901549.json.
The same organization elsewhere in the program: exempt status and filing health · federal awards · grant guidance · open opportunities.
This is informational only, derived from public data on the dates shown. It is not an eligibility determination, and not legal, tax, or accounting advice. Verify against the official source before relying on it.