Harry F Mariani Family Foundation
The Harry F Mariani Family Foundation is a private foundation based in Locust Valley, New York. In its 2025 filing, it reported 14 grants totaling $272,000 to charitable organizations.
Key facts about Harry F Mariani Family Foundation
In short: Harry F Mariani Family Foundation gave $272K across 14 grants in 2025 (avg $19K), mostly in New York. 0% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- EIN
- 84-3901549
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $272,000
- Grants made (2025)
- 14
- Average grant
- $19,429
- Median grant
- $10,000
- New grantees (estimate)
- 0% first-time grantees (0 of 14, 2025; small sample)
- Total assets
- $5,781,503
- Primary geography
- New York (50% of itemized 2025 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Full details ↓
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology). Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$5.8M
+2.1% YoY
Annual Giving
$272K
+36.0% YoY
Grant Count
14
+0.0% YoY
Avg Grant Size
$19K
+36.0% YoY
Under IRS private-foundation payout rules, Harry F Mariani Family Foundation reported a distributable amount of $310K for 2025 — the minimum it must pay out in qualifying distributions.
Is Harry F Mariani Family Foundation open to new grantees?
0%
first-time grantees, 2025
In 2025, 0 of 14 grantees (0%) were first-time recipients. With only 14 grantees, that is a small sample: one grantee more or less moves the share by about 7 points. How we count
- 93% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−15%). Method
- In 2025 it paid out 95% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2021–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2025 grants show support for a range of organizations. For example, the Tisch Multiple Sclerosis Research Center of New York received $68,000 for general support, and the Beaufort County Open Land Trust received $50,000 for general support.
Among other 2025 grantees, Northwell Health Foundation received $56,000. Northwell describes its mission as connecting donors, patients, and leaders with philanthropic support for underserved and uninsured people, medical technology and research, and Northwell Health facilities and programs. Minuteman Senior Services, which received $3,000, says it helps seniors and people with disabilities live in the setting of their choice by engaging community resources and supporting caregivers. Community Dispute Settlement Center, also a $3,000 recipient, says it promotes better ways to understand and deal with conflict through mediation, training, and community outreach. Lowcountry Food Bank, which received $1,500, describes its mission as uniting its community to pursue equitable, dignified, and consistent access to food.
Grantmaking
In 2025, the foundation reported 14 grants totaling $272,000. Grants ranged from $1,000 to $68,000, with a median of $10,000. The largest reported grants included $68,000 to the Tisch Multiple Sclerosis Research Center of New York, $56,000 to Northwell Health Foundation, $50,000 to the Beaufort County Open Land Trust, $27,000 to Pingree School, and $25,000 to the University of Notre Dame. Each was designated for general support.
How to Apply
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
Ready to take the next step with Harry F Mariani Family Foundation?
Geographic Focus
Where this funder awards grants
In 2025, grant dollars were distributed among recipients in New York (50%), South Carolina (24%), Massachusetts (12%), Indiana (9%), and Texas (4%).
Grant Distribution by State
Share of 2025 grant dollars across all 14 itemized grants.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2025, annual grant giving ranged from $200K (2024) to $320K (2022). In 2025 it made 14 grants totaling $272K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Tisch Multiple Sclerosis Research Center New York Inc ($68K). Together the top 10 received $265K.
Grant Size Distribution
106 grants across all recorded years
The most common grant size was under $50K: 97 grants of 106 (92%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Tisch Multiple Sclerosis Research Center New York Inc New York, NY | General Support | $68,000 |
| Northwell Health Foundation Huntington, NY | General Support | $56,000 |
| The Beaufort County Open Land Trust Inc Beaufort, SC | General Support | $50,000 |
| Pingree School South Hamilton, MA | General Support | $27,000 |
| University of Notre Dame Notre Dame, IN | General Support | $25,000 |
| The Don Monti Memorial Research Foundation Cold Spring Harbor, NY | General Support | $12,000 |
| Coastal Conservation Association South Carolina Columbia, SC | General Support | $10,000 |
| Tulane University Dallas, TX | General Support | $10,000 |
| St Joseph's Children's Hospital Tampa Tampa, FL | General Support | $4,000 |
| Community Dispute Settlement Center Cambridge, MA | General Support | $3,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grants |
|---|---|---|---|---|
| 2025 | $5,781,503 | $432,453 | $314,130 | $272,000 |
| 2024 | $5,663,180 | $204,144 | $238,489 | $200,000 |
| 2023 | $5,697,947 | $173,668 | $275,392 | $240,000 |
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $5,781,503 | $5,663,180 | $5,697,947 |
| Revenue | $432,453 | $204,144 | $173,668 |
| Expenses | $314,130 | $238,489 | $275,392 |
| Qualifying Distributions | $292,879 | $220,102 | $259,051 |
| Net Investment Income | $413,326 | $185,757 | $157,327 |
| Distributable Amount | $309,829 | $291,166 | $259,416 |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 11, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS June 13, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 10, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS March 27, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS April 9, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS April 14, 2026)
- IRS filings on file for fiscal years 2020–2025
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists James W Mariani as director, secretary, and treasurer; Virginia A Mariani, Kathryn Mariani Altemus, and John C Mariani as directors.
Harry F Mariani Family Foundation's 2025 filing lists 4 officers; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
James W. Mariani
Director, Secretary & Treasurer
On filings since 2020
1 hr/week
No compensation reported
John C. Mariani
Director
On filings since 2020
1 hr/week
No compensation reported
Virginia A. Mariani
Director
On filings since 2020
1 hr/week
No compensation reported
Kathryn Mariani Altemus
Director
On filings since 2022
1 hr/week
No compensation reported
Former officers (1)
- Former: Kathryn Goodrich (2020–2021) — Director
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Contact
Mailing address: PO Box 446, Locust Valley, NY 11560
Phone: (516) 277-2107
Frequently asked questions about Harry F Mariani Family Foundation
How much does Harry F Mariani Family Foundation give each year?
Harry F Mariani Family Foundation gave $272K across 14 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $200K across 14 grants.
What is Harry F Mariani Family Foundation's typical grant size?
Harry F Mariani Family Foundation's median grant in 2025 was $10,000, and its average grant was $19,429, across 14 grants on its 2025 IRS Form 990-PF.
Where does Harry F Mariani Family Foundation give grants?
Harry F Mariani Family Foundation gives mostly in New York: 50% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were South Carolina (24%) and Massachusetts (12%). The most frequent recipient cities were Charleston, SC (2 grants).
Does Harry F Mariani Family Foundation give general operating support?
Yes: 100% of Harry F Mariani Family Foundation's 2025 grants with a stated purpose (14 of 14) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Harry F Mariani Family Foundation's largest grantees?
Harry F Mariani Family Foundation's largest 2025 grantees include Tisch Multiple Sclerosis Research Center New York Inc ($68,000), Northwell Health Foundation ($56,000) and The Beaufort County Open Land Trust Inc ($50,000), according to its 2025 IRS Form 990-PF. Together they received 64% of its itemized 2025 grant dollars.
How large is Harry F Mariani Family Foundation?
Harry F Mariani Family Foundation reported $5.8M in total assets on its 2025 IRS Form 990-PF. It paid out $293K in qualifying distributions that year, against a required minimum of $310K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What does Harry F Mariani Family Foundation fund?
No mission statement for the foundation is provided. Its 2025 grants show support for a range of organizations. For example, the Tisch Multiple Sclerosis Research Center of New York received $68,000 for general support, and the Beaufort County Open Land Trust received $50,000 for general support. See mission & focus areas ↑
How do I apply for a grant from Harry F Mariani Family Foundation?
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Harry F Mariani Family Foundation's EIN?
Harry F Mariani Family Foundation's EIN (Employer Identification Number) is 84-3901549. IRS Form 990 filing data is available on this page for 2020–2025.
Does Harry F Mariani Family Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Here's the math on researching Harry F Mariani Family Foundation by hand.
Explore Open Grants
Browse active grant opportunities in Harry F Mariani Family Foundation's focus areas in our free grants database
Similar Funders
Funders with grantees in common, and similar funders in New York
Banfi Vintners Foundation
Melville, NY
The foundation supports educational institutions, charitable organizations, and other nonprofits, including work in education, health, and community causes. In 2024, grants ranged from $1,000 to $40,000, with a median of $5,000; funding was concentrated in Connecticut and Florida. It gives only to preselected organizations and does not accept unsolicited requests.
Assets
$5.8M
Grants
35
Total Given
$236K
TD Charitable Foundation
Portland, ME
TD Charitable Foundation funds education, human services, housing and eviction prevention, nonprofit training, and community initiatives, with emphasis on inclusion and underserved and low-to-moderate-income communities. Its 2025 grants ranged from $300 to $250,000, with a median of $10,000; its filing lists a typical award range of $135–$475,000. It focuses primarily on Florida, New Jersey, and New York, and its 2023 filing says applications are available online; applicants must be eligible 501(c)(3) public charities in states with a TD Bank branch.
Assets
$9.1M
Grants
1,003
Total Given
$24.9M
The Ford Foundation
New York, NY
The Ford Foundation funds organizations and initiatives working to reduce inequality and advance social justice, including work on civic engagement, civil rights, climate justice, disability rights, and technology and society. In 2024, its grants ranged from $45 to $15 million, with a median of $100,000, supporting work in the U.S. and internationally. It says most grants are identified by the foundation and it does not accept unsolicited proposals by mail, email, or phone; limited opportunities may be offered separately.
Assets
$17.5B
Grants
4,007
Total Given
$844.7M
The New York Community Trust
New York, NY
The New York Community Trust funds nonprofit programs in areas such as arts, education, health, the environment, workforce development, and youth development, including projects that improve services, build organizational capacity, or advance policy and systems change. Its competitive grants mainly serve New York City, Long Island, and Westchester, with some national and international environmental funding; the 2024 median grant was $20,000. The profile does not state whether it accepts unsolicited requests.
Assets
$3.5B
Grants
2,748
Total Given
$193.8M
The Simons Foundation Inc
New York, NY
The Simons Foundation funds research and public engagement in mathematics and the physical, life, autism, and neuroscience sciences. In 2024, it made 1,727 grants, with a median award of $72,000 and amounts ranging from $1,480 to $20 million, supporting organizations in the U.S. and internationally. It states that it funds only preselected charitable organizations and does not accept unsolicited requests.
Assets
$4.5B
Grants
1,727
Total Given
$272.0M
Local Initiatives Support Corporation
New York, NY
LISC funds affordable housing, community development, small businesses, and related efforts that strengthen inclusive communities, providing grants as well as loans, equity, and technical assistance across the country. Its 2024 grants had a median award of $40,000, though amounts varied widely. Application access is program-specific: for its Rhode Island child care facilities planning grants, applicants are instructed to consult program staff before submitting a request.
Assets
$1.6B
Grants
1,119
Total Given
$102.8M
More Funders in New York
Harry F Mariani Family Foundation down — hundreds of funders to go?