Riley Mabel Louise Tr Uwill

Foundation · Grantmaker Pittsburgh, PA EIN: 04-6278857 Website

The Riley Mabel Louise Trust Under Will is a private foundation established in 1971 through the will of Mabel Louise Riley, a Boston native and arts patron who passed away in 1971 at age 88. The foundation operates as a general-purpose funder with a strategic focus on community development and support for disadvantaged populations in the Boston area.

Key facts about Riley Mabel Louise Tr Uwill

EIN: 04-6278857
Latest 990 filing: Form 990-PF, 2024
Annual giving (2024): $3,746,449
Grants made (2024): 69
Average grant: $54,296
Median grant: $50,000
New grantees (estimate): 67% first-time grantees (46 of 69, 2024)
Total assets: $47,264,875
Primary geography: Massachusetts (96% of itemized 2024 grant dollars)
How to apply: Online application through the GMA Foundations portal. Full details ↓

Data from IRS Form 990-PF, 2024; updated September 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.

Who Riley Mabel Louise Tr Uwill funds

By grant dollars, the top recipient states for Riley Mabel Louise Tr Uwill's 69 itemized 2024 grants were Massachusetts (96%). The most frequent recipient cities were Boston, MA (23 grants), Roxbury, MA (3 grants), Dorchester, MA (3 grants) and East Boston, MA (2 grants). 100% of grants with a stated purpose were for general or operating support.

Is Riley Mabel Louise Tr Uwill open to new grantees?

67%

first-time grantees, 2024

In 2024, 46 of 69 grantees (67%) were first-time recipients. First grants averaged $53K; repeat grants $58K. How we count

Medians: $50K first-time, $50K repeat.

7% of 2024 grantees were also funded in 2023. Method
Giving held roughly steady from 2021 to 2024 (−5%). Method
In 2024 it paid out 110% of its IRS minimum distribution (the 5% rule). Method

Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.

Next steps with Riley Mabel Louise Tr Uwill

How to evaluate Riley Mabel Louise Tr Uwill as a funder
Our grant prospecting guide: read the 990-PF, check fit, and decide whether to apply.
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Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$47.3M

-3.8% YoY

Annual Giving

$3.7M

+4.6% YoY

Grant Count

+6.2% YoY

Avg Grant Size

$54K

-1.4% YoY

Under IRS private-foundation payout rules, Riley Mabel Louise Tr Uwill reported a distributable amount of $3.8M for 2024 — the minimum it must pay out in qualifying distributions.

Research compiled by Grantable AI from public sources. Last updated April 2026.

Mission & Focus Areas

The foundation's guiding principle comes from Miss Riley's instruction to her trustees to give "particular consideration to the needs of children and youth."

Primary funding priorities include:

Literacy and afterschool programs for disadvantaged children and adolescents
Character-building programs for children and adolescents
Community development benefiting low-income and minority neighborhoods, including job development, training, and housing
Citywide cultural improvements and arts initiatives in Boston and vicinity
High-impact grants with potential for significant community benefits, including those with some element of risk

The foundation emphasizes leveraging its grants by funding new programs that can become self-sufficient or serve as models for replication in other geographic areas.

Grantmaking

How to Apply

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Geographic Focus

Where this funder awards grants

Boston, MA and its 23 neighborhoods, with the Small Grants Fund serving the Greater Dudley area.

Grant Distribution by State

Massachusetts $3.6M (96%)

New York $100K (3%)

Wisconsin $50K (1%)

Pennsylvania $10K (0%)

California $5K (0%)

Share of all 69 itemized 2024 grant dollars.

States

Arkansas California Colorado Georgia Kentucky Massachusetts Michigan New York Pennsylvania Wisconsin

Cities

BostonDorchesterRoxburyCambridgeJamaica PlainLowellLynnEast BostonBraintreeSalemWatertownWorcesterBrightonDedhamNew YorkSpringfieldActonAndoverBrocktonBurlington

Financial History

Multi-year comparison from IRS filings

Annual Giving: $3,580,190 (2023)

Number of Employees: 3

Revenue

Expenses

Qualifying Distributions

Net Investment Income

Metric	2024	2023	2022
Total Assets	$47,264,875	$49,133,038	$47,126,550
Revenue	$2,886,522	$6,522,059	$888,658
Expenses	$4,864,161	$4,721,806	$4,816,087
Qualifying Distributions	$4,194,786	$3,997,705	$4,398,807
Net Investment Income	$2,255,483	$6,010,435	$1,631,353
Distributable Amount	$3,812,819	$3,401,470	$3,531,869

Data update history

When this profile's IRS filing data changed on Grantable

February 28, 2026 IRS filings on file for fiscal years 2020–2024

Giving Over Time

Total grant dollars and number of grants per year

Grant Insights

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2024

Grant Size Distribution

315 grants across all recorded years

Open Grants

1 open opportunity from Riley Mabel Louise Tr Uwill

Foundation

Mabel Louise Riley Foundation: Riley Foundation Grants

Riley Mabel Louise Tr Uwill

Amount

US $50,000 - US $100,000

Deadline

Rolling / Open

Giving History

Grant recipients and amounts by year

Among its reported 2024 grants, the largest recipients include East Boston Social Centers Inc ($100,000), Health Imperatives Inc ($100,000), Innercity Weightlifting Inc ($100,000).

Recipient	Purpose	Amount
EAST BOSTON SOCIAL CENTERS INC East Boston, MA	GENERAL OPERATING	$100,000
HEALTH IMPERATIVES INC Brockton, MA	GENERAL OPERATING	$100,000
INNERCITY WEIGHTLIFTING INC Cambridge, MA	GENERAL OPERATING	$100,000
INSTITUTE OF TECHNOLOGY Brooklyn, NY	GENERAL OPERATING	$100,000
UTEC INC Lowell, MA	GENERAL OPERATING	$100,000
THE BASE Roxbury, MA	GENERAL OPERATING	$100,000
BOSTON FOOD FOREST COALITION Jamaica Plain, MA	GENERAL OPERATING	$100,000
LATINOS FOR EDUCATION INC Belmont, MA	GENERAL OPERATING	$100,000
PHILANTHROPY MASSACHUSETTS INC Boston, MA	GENERAL OPERATING	$86,975
FAMILIES FIRST PARENTING PROGRAMS INC Watertown, MA	GENERAL OPERATING	$80,000

Leadership & Key People

Leadership team and compensation from IRS filings

Trustees: Grace Fey, Joannie Jaxtimer, BNY Mellon
Administrative Director: Nancy A. Saunders (nsaunders@gmafoundations.com)
Family Strengthening Small Grants Fund Director: Che Madyun (ccmadyun@yahoo.com)

Riley Mabel Louise Tr Uwill's 2024 filing lists 3 officers; all 3 officers listed in 2024 are compensated.

Officers on the 2024 filing

BNY Mellon N A

Trustee

Trustee → Co-Trustee, 2021
Co-Trustee → Trustee, 2022

On filings since 2020

1 hr/week

$177K (2020) → $359K (2024)
Grace K. Fey

Co-Trustee

On filings since 2020

1 hr/week

$50K (2020) → $56K (2024)
Joanne Y. Jaxtimer

Co-Trustee

On filings since 2020

1 hr/week

$50K (2020) → $56K (2024)

Former officers (1)

Former: Robert W. Holmes (2020) — Co-Trustee

Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Compensation Overview

From 2024 IRS filing

Frequently Asked Questions

What does Riley Mabel Louise Tr Uwill fund?

The foundation's guiding principle comes from Miss Riley's instruction to her trustees to give "particular consideration to the needs of children and youth." Primary funding priorities include: • Literacy and afterschool programs for disadvantaged children and adolescents • Character-building programs for children and adolescents • Community development benefiting low-income and minority neighborhoods, including job development, training, and housing • Citywide cultural improvements and arts in…

How do I apply for a grant from Riley Mabel Louise Tr Uwill?

Online application through the GMA Foundations portal. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑

Where does Riley Mabel Louise Tr Uwill make grants?

Boston, MA and its 23 neighborhoods, with the Small Grants Fund serving the Greater Dudley area.

What size grants does Riley Mabel Louise Tr Uwill award?

In 2024, Riley Mabel Louise Tr Uwill awarded 69 grants totaling $3.7M — an average of about $54K per grant, based on its IRS Form 990 filings.

How much is Riley Mabel Louise Tr Uwill required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2024, Riley Mabel Louise Tr Uwill reported a distributable amount of $3.8M on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.