Mary P Dolciani Halloran Foundation
The Mary P. Dolciani Halloran Foundation is a private foundation based in Harrison, New York. Established in 1982, it supports the study of mathematics and mathematics education, as well as educational and humanitarian projects.
Mary P Dolciani Halloran Foundation at a glance
In short: Mary P Dolciani Halloran Foundation gave $676K across 22 grants in 2025 (avg $31K), top state New York. 43% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $675,798
- -4.0% vs 2024
- Grants made (2025)
- 22
- -26.7% vs 2024
- Average grant
- $30,718
- +30.9% vs 2024
- Median grant
- $11,500
- Total assets
- $5,301,020
- -3.8% vs 2024
- New grantees (estimate)
- 43% first-time grantees (9 of 21, 2025; small sample)
- Primary geography
- New York (49% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Mary P Dolciani Halloran Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The Foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests. Applications for the Dolciani Mathematics Enrichment Grants are made through the Mathematical Association of America.
- Contact
Mailing address: 500 Mamaroneck Avenue 301, Harrison, NY 10528
Phone: (914) 381-8900
Website: https://www.dolcianihalloranfoundation.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Mary P Dolciani Halloran Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Hunter College Foundation Inc ($300K across 2 grants). Together the top 10 received $616K.
Grant Size Distribution
131 grants across all recorded years
The most common grant size was under $50K: 109 grants of 131 (83%).
Geographic Focus
Where this funder awards grants
In 2025, grant dollars by recipient state were reported as: New York, 49%; District of Columbia, 24%; Washington, 9%; Oregon, 7%; and Pennsylvania, 4%.
Grant Distribution by State
Share of 2025 grant dollars across all 22 itemized grants.
States
Cities
Is Mary P Dolciani Halloran Foundation open to new grantees?
43%
first-time grantees, 2025
In 2025, 9 of 21 grantees (43%) were first-time recipients. With only 21 grantees, that is a small sample: one grantee more or less moves the share by about 5 points. First grants averaged $24K; repeat grants $38K. How we count
Medians: $5K first-time, $15K repeat.
- 48% of 2025 grantees were also funded in 2024. Method
- Giving fell 26% from 2022 to 2025. Method
- In 2025 it paid out 204% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2019–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $466K (2019) to $917K (2022). In 2025 it made 22 grants totaling $676K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Hunter College Foundation Inc New York, NY | Mathematics Innovation | $250,000 |
| Mathmatical Association of America Washington, DC | Omeg + Project Next | $161,000 |
| Hunter College Foundation Inc New York, NY | Establish Scholarship in Perpetuity | $50,000 |
| Office of Catholic Education Royersford, PA | Greenhouse & Student Fund | $27,068 |
| Cathedral High School New York City, NY | Support Renovations | $25,000 |
| Mathcounts Foundation Brooklyn Chapter Alexandria, VA | Support Brooklyn Chapter - Mathematics Education | $24,000 |
| Molalla Police Department Molalla, OR | Support for K-9 | $21,000 |
| Germantown Performing Arts Center Germantown, TN | Support the Arts Education Program and Student Matinees | $15,000 |
| Providence SW WA Foundation Olympia, WA | Support the Toddler Learning Program | $15,000 |
| Seattle Universal Math Museum Seattle, WA | General Operating Support | $15,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $5,301,020 | $708,440 | $915,026 | $675,798 | 22 | $855,714 | $631,461 | $418,500 |
| 2024 | $5,507,606 | $888,415 | $966,678 | $704,097 | 30 | $907,002 | $826,941 | $415,608 |
| 2023 | $5,585,869 | $758,876 | $1,088,071 | $841,375 | 27 | $1,042,013 | $687,331 | $391,518 |
| 2022 | $5,915,064 | $344,618 | $1,151,985 | $916,985 | 26 | $1,081,701 | $291,732 | $436,246 |
| 2021 | $6,722,431 | $990,085 | $866,405 | $622,420 | 26 | $794,246 | $917,593 | $501,645 |
| 2020 | $6,598,751 | $703,356 | $737,293 | $520,461 | 24 | — | $748,099 | $420,251 |
| 2019 | $6,632,688 | $412,708 | $735,939 | $465,742 | 33 | — | $328,479 | $452,378 |
Under IRS private-foundation payout rules, Mary P Dolciani Halloran Foundation reported a distributable amount of $419K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The Foundation was established to further the study of mathematics and mathematics education. Its website describes programs and projects including mathematics learning centers, fellowships, enrichment grants, awards, and school scholarship endowments.
Its 2025 grants show support for a range of organizations and purposes, including mathematics education, scholarships, school renovations, arts education, early learning, and K-9 support. Among the grantees, Germantown Performing Arts Center says it serves its community through artistic programs intended to educate, engage, enrich, and transform. Seattle Universal Math Museum says it aims to spark interest in math through exploration and learning, build confidence, and reduce equity gaps in math education.
Grantmaking
In 2025, the Foundation reported 22 grants totaling $675,798. Grant amounts ranged from $3,500 to $250,000, with a median of $11,500.
The largest reported grants included $250,000 to Hunter College Foundation for “Mathematics Innovation” and $161,000 to the Mathematical Association of America for “OMEG + Project Next.” Hunter College Foundation also received $50,000 to establish a scholarship in perpetuity. Other grants included $27,068 to the Office of Catholic Education for a greenhouse and student fund; $25,000 to Cathedral High School for renovations; and $24,000 to the MATHCOUNTS Foundation Brooklyn Chapter for mathematics education.
The Foundation’s Dolciani Mathematics Enrichment Grants are administered through the Mathematical Association of America. The program supports projects in which middle or high school teachers partner with college or university mathematical sciences faculty to provide mathematics enrichment beyond regular coursework. The Foundation states that approximately 10 to 12 projects are funded annually through this program, with applications made through the Mathematical Association of America.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Michael Matthew Thomas as Chief Executive Officer and Denise Lyn Halloran as Chief Executive Officer. It also lists Linda Redman, Mardi Tuttle Biernat, and Steven Wishnia as trustees.
Mary P Dolciani Halloran Foundation is led by Michael Matthew Thomas, Chief Executive Officer since 2025 (on filings since 2019); all 5 officers listed in 2025 are compensated.
Officers on the 2025 filing
Michael Matthew Thomas
Chief Executive Officer
Trustee → Chief Executive Officer, 2025
On filings since 2019
15 hrs/week
$8K (2019) → $5K (2025)
Denise Lyn Halloran - Passed
Chief Executive Officer
New on the 2025 filing
35 hrs/week
$82K (2025)
Linda Redman
Trustee
On filings since 2019
1.2 hrs/week
$8K (2019) → $5K (2025)
Mardi Tuttle Biernat
Trustee
On filings since 2023
1.2 hrs/week
$5K (2023) → $5K (2025)
Steven Wishnia
Trustee
On filings since 2024
1.2 hrs/week
$3K (2024) → $5K (2025)
Former officers (3)
- Former: Denise Lyn Halloran (2019–2024) — Chief Operating Officer
- Former: Thomas G. Quinn (2019–2023) — Trustee
- Former: Eugene J. Callahan Esq. (2019–2022) — Trustee · Filing note: Thru 3/2022
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $82K, to Denise Lyn Halloran - Passed 102025 (Chief Executive Officer). 5 officers or directors reported compensation on that filing.
Frequently asked questions about Mary P Dolciani Halloran Foundation
How much does Mary P Dolciani Halloran Foundation give each year?
Mary P Dolciani Halloran Foundation gave $676K across 22 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $704K across 30 grants.
What is Mary P Dolciani Halloran Foundation's typical grant size?
Mary P Dolciani Halloran Foundation's median grant in 2025 was $11,500, and its average grant was $30,718, across 22 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Mary P Dolciani Halloran Foundation that year got $24K on average.
Where does Mary P Dolciani Halloran Foundation give grants?
Mary P Dolciani Halloran Foundation's top state is New York, with 49% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were District of Columbia (24%) and Washington (9%). The most frequent recipient cities were Olympia, WA (4 grants), New York, NY (2 grants) and Memphis, TN (2 grants).
Does Mary P Dolciani Halloran Foundation give general operating support?
Occasionally: 5% of Mary P Dolciani Halloran Foundation's 2025 grants with a stated purpose (1 of 22) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Mary P Dolciani Halloran Foundation's largest grantees?
Mary P Dolciani Halloran Foundation's largest 2025 grantees include Hunter College Foundation Inc ($300,000 across 2 grants), Mathmatical Association of America ($161,000) and Office of Catholic Education ($27,068), according to its 2025 IRS Form 990-PF. Together they received 72% of its itemized 2025 grant dollars.
How large is Mary P Dolciani Halloran Foundation?
Mary P Dolciani Halloran Foundation reported $5.3M in total assets on its 2025 IRS Form 990-PF. It paid out $856K in qualifying distributions that year, against a required minimum of $419K (roughly 5% of its investment assets).
What does Mary P Dolciani Halloran Foundation fund?
The Foundation was established to further the study of mathematics and mathematics education. Its website describes programs and projects including mathematics learning centers, fellowships, enrichment grants, awards, and school scholarship endowments. See mission & focus areas ↑
How do I apply for a grant from Mary P Dolciani Halloran Foundation?
The Foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Mary P Dolciani Halloran Foundation's EIN?
Mary P Dolciani Halloran Foundation's EIN (Employer Identification Number) is 13-3147449. IRS Form 990 filing data is available on this page for 2019–2025.
Does Mary P Dolciani Halloran 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.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2024 (received by the IRS April 29, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS April 28, 2026)
- Added Form 990-PF for fiscal year 2019 (received by the IRS May 6, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS July 19, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS July 19, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS April 18, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 22, 2024)
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Cite this profile
Grantable. (2026). Mary P Dolciani Halloran Foundation funder profile. GrantGraph. Retrieved October 21, 2026, from https://grantable.co/funders/mary-p-dolciani-halloran-foundation-morg_dfb674f977594911ab21b7f41358836a
BibTeX
@misc{grantable_133147449_2026,
author = {{Grantable}},
title = {{Mary P Dolciani Halloran Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/mary-p-dolciani-halloran-foundation-morg_dfb674f977594911ab21b7f41358836a},
note = {Accessed 2026-10-21. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Mary P Dolciani Halloran Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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