The John Butler Mulliken Foundation Inc
The John Butler Mulliken Foundation Inc is a private foundation focused on Environment & Animals, based in Waltham, MA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $1.3M in total assets. In 2025, it awarded 1 grant totaling $75K. Net investment income was $89K.
The John Butler Mulliken Foundation Inc at a glance
In short: The John Butler Mulliken Foundation Inc gave $75K across 1 grant in 2025 (avg $75K), mostly in Massachusetts. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $75,000
- Grants made (2025)
- 1
- Average grant
- $75,000
- Median grant
- $75,000
- Total assets
- $1,299,236
- +0.3% vs 2024
- Primary geography
- Massachusetts (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who The John Butler Mulliken Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Boston Children's Hospital Trust ($75K).
Grant Size Distribution
4 grants across all recorded years
The most common grant size was under $50K: 3 grants of 4 (75%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
States
Cities
How The John Butler Mulliken Foundation Inc gives
- Giving grew 51% from 2022 to 2025. Method
- In 2025 it paid out 98% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $399 (2020) to $75K (2025). In 2025 it made 1 grant totaling $75K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Boston Children's Hospital Trust Boston, MA | Support of Public Charity | $75,000 |
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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 | $1,299,236 | $90,395 | $76,523 | $75,000 | 1 | $75,000 | $88,872 | $76,891 |
| 2024 | $1,294,964 | $44,593 | $7,358 | — | — | — | $41,731 | $76,214 |
| 2023 | $1,468,843 | $-10,341 | $35,223 | $28,152 | 1 | $28,152 | $32,237 | $71,840 |
| 2022 | $1,535,500 | $75,752 | $71,571 | $49,694 | 2 | $49,694 | $54,013 | $90,560 |
| 2021 | $1,325,026 | $51,166 | $8,071 | — | — | — | $43,328 | $76,476 |
| 2020 | $1,400,105 | $43,184 | $7,189 | $399 | 1 | — | $36,642 | $68,564 |
Under IRS private-foundation payout rules, The John Butler Mulliken Foundation Inc reported a distributable amount of $77K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The John Butler Mulliken Foundation Inc is led by John B. Mulliken MD, President on every filing since 2020; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
John B. Mulliken MD
President
On filings since 2020
5 hrs/week
No compensation reported
Donna B. Elgart Medoff
Treasurer
On filings since 2022
5 hrs/week
No compensation reported
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.
Frequently asked questions about The John Butler Mulliken Foundation Inc
How much does The John Butler Mulliken Foundation Inc give each year?
The John Butler Mulliken Foundation Inc gave $75K across 1 grant in 2025, according to its 2025 IRS Form 990-PF.
How large is The John Butler Mulliken Foundation Inc?
The John Butler Mulliken Foundation Inc reported $1.3M in total assets on its 2025 IRS Form 990-PF. It paid out $75K in qualifying distributions that year, against a required minimum of $77K (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 is The John Butler Mulliken Foundation Inc?
The John Butler Mulliken Foundation Inc is a private foundation focused on Environment & Animals, based in Waltham, MA. It holds $1.3M in total assets as of 2025.
Where does The John Butler Mulliken Foundation Inc operate?
The John Butler Mulliken Foundation Inc has awarded grants in Massachusetts.
What is The John Butler Mulliken Foundation Inc's EIN?
The John Butler Mulliken Foundation Inc's EIN (Employer Identification Number) is 04-3424901. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS July 26, 2022)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS July 7, 2023)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS July 7, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 15, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS July 23, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS April 15, 2026)
- IRS filings on file for fiscal years 2020–2025
Live grants for the work The John Butler Mulliken Foundation Inc funds
Environment & Animals Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in The John Butler Mulliken Foundation Inc's focus areas in our free grants database
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