Ausolus Trust
At a glance
Key takeaways
- Ausolus Trust's grants cover a broad mix of institutions and community organisations, including schools and colleges, museums, conservation groups, health organisations and a public library, so a small nonprofit whose work fits one of these areas has a reasonable case to make.
- Its typical grant runs from $5,000 to $50,000, with a median of $10,000 and half of its grants at $10,000 or less, so a modest request near $10,000 sits closest to what it usually gives, although its largest grant was $100,000.
- Repeat giving is strong, with 90% of its grant dollars to organisations going to ones it had funded before, which suggests that an existing connection matters, so a first approach should be made with care.
- The filing says submissions have no prescribed format and lists a fixed deadline of August 15, so a short proposal sent ahead of that date is the practical route.
- No geographic focus is stated, although its grants have mainly gone to Massachusetts, Pennsylvania, Maine and New York, so an organisation elsewhere should check the grant pattern before writing.
Overview
Ausolus Trust is a US private foundation based in Boston, MA.
What they fund
Profile based on the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) only: no website or other web source for the foundation was found. Every statement is checked against the filings. Sources read on 7 October 2026.
Priority Areas
The filings record grants to a varied range of charitable organisations, including schools and colleges, museums, cultural organisations, environmental and conservation bodies, healthcare institutions, libraries, churches and advocacy organisations. Each grant purpose is recorded only as an exempt purpose, so the filings do not identify a narrower programme focus or specify the work supported. The recorded recipients include educational institutions, museums and heritage organisations, conservation groups, health organisations, a public library, a church and advocacy groups. The filings therefore show broad support across institutional and community organisations rather than a stated set of funding priorities.
Geographic Focus
No geographic focus is stated; the filings show grants mainly in Massachusetts, Pennsylvania, Maine and New York.
How to apply
Submissions have no prescribed format.
Deadlines: August 15.
Application success factors
- Repeat giving: In its TY2024 filing, 90% of its grant dollars to organisations went to organisations it had also funded in its TY2022 or TY2023 filing.
- Grant size: Across its TY2022, TY2023 and TY2024 filings, half of its 185 grants to organisations were $10,000 or less.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2022–2024.
Grant dollars by state
6 other states: 9%
- The largest single recipient received 7% of grant dollars to organisations.
- In tax year 2024, 90% of grant dollars went to organisations Ausolus Trust had funded in earlier filings.
- No grants were paid directly to organisations outside the US.
- <1% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 68 grants in tax year 2024 by size
Median $10,000 (tax year 2024)
The largest grants to organisations in the foundation’s latest filing:
- Morris Arboretum · Exempt purpose$100,0002024 tax year
- Friends of Wissahickon · Exempt purpose$100,0002024 tax year
- Vassar College · Exempt purpose$100,0002024 tax year
- Lowell Observatory · Exempt purpose$70,0002024 tax year
- Maine Coast Heritage Trust · Exempt purpose$57,0002024 tax year
- Isabella Stewart Gardner Museum · Exempt purpose$55,0002024 tax year
- Dana-Farber Cancer Institute · Exempt purpose$50,0002024 tax year
- Miss Porter's School · Exempt purpose$50,0002024 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Susan W Peck — Trustee
- Barbara P Lyman — Trustee
- George Putnam III — Trustee
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2022 tax year | $1,774,712 | $1,465,000 | $26,288,985 | Filing for 2022 tax year |
| 2023 tax year | $1,673,327 | $1,425,000 | $29,576,368 | Filing for 2023 tax year |
| 2024 tax year | $1,741,641 | $1,515,000 | $32,406,464 | Filing for 2024 tax year |
Figures from the foundation’s IRS Form 990-PF filings. Assets are at fair market value at year end. The document icon links to each year’s filing on ProPublica Nonprofit Explorer.
Sources
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At a glance

Applying to Ausolus Trust?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- (617) 624-0800
- Boston, MA

Applying to Ausolus Trust?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- (617) 624-0800
- Boston, MA