· Private foundation
Marilyn Mason Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.
Where the money goes
Grants by size, and the largest recipients.
| Recipient | Amount |
|---|---|
| APOLLO ENSEMBLE OF BOSTON | $6,050 |
| MAGGIES ENTHUSE CHARITY | $4,662 |
| AMERICAN GUILD OF ORGANISTS | $4,000 |
| Individual grant recipient | $2,000 |
| MASS EYE EAR HOSPITAL | $1,000 |
| MASS CHAMBER MUSIC ARTISTS | $1,000 |
| KEEPING THE BLUES ALIVE | $800 |
| ORCHESTRA BOOK CLUB | $500 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Dollar for dollar, its grants (FY20–25) land where the poverty rate runs at 14%, against an area that typically sits at 8%. 100% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
4 repeat relationships: 2 still active in FY2025, 2 since wound down; 6 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Still filing today
New vs renewed · share of each year
In FY2025, 50% of grant dollars renewed an existing relationship; $10k went to new ones.
How this is measured
Backed again, and grew
- AGAMERICAN GUILD OF ORGANISTS5× · 2020–2025 · $16k · revenue +34%
- AEAPOLLO ENSEMBLE OF BOSTON INC3× · 2023–2025 · $14k · revenue +105% · 32% of their budget
- LSLONGY SCHOOL OF MUSIC2× · 2023–2024 · $7k
Funded once
- HMHARVARD MEDICAL SCHOOLone grant, 2024 · $5k
- 1C1ST CONGREGATIONAL CHURCHone grant, 2020 · $5k
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
2 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 2 of the 12 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
How much its grantees rely on government
Each dot is one organization Marilyn Mason Foundation funds: left to right is the share of its income from government, bottom to top the share from Marilyn Mason Foundation. Bigger dots raise more.
How this is measured
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How do I get to Marilyn Mason Foundation?
Find your warmest path to Marilyn Mason Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.
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