Katherine Wells Macmillan Foundation
Katherine Wells Macmillan Foundation is a private foundation focused on Education, based in Minneapolis, MN. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $131.8M in total assets. In 2024, it awarded 6 grants totaling $5.7M. Net investment income was $4.3M.
Katherine Wells Macmillan Foundation at a glance
In short: Katherine Wells Macmillan Foundation gave $5.7M across 6 grants in 2024 (avg $954K), mostly in Florida. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $5,725,000
- +86.5% vs 2023
- Grants made (2024)
- 6
- +100.0% vs 2023
- Average grant
- $954,167
- -6.8% vs 2023
- Median grant
- $1,000,000
- Total assets
- $131,792,466
- +19.0% vs 2023
- Primary geography
- Florida (65% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
Who Katherine Wells Macmillan Foundation funds
How this funder distributes its grants
Top Recipients
Top 6 recipients in 2024
The largest 2024 recipient was Community Foundation of the Florida Keys ($1.5M). Together the top 6 received $5.7M.
Grant Size Distribution
17 grants across all recorded years
The most common grant size was under $50K: 8 grants of 17 (47%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2024 grant dollars across all 6 itemized grants.
States
Cities
How Katherine Wells Macmillan Foundation gives
- Giving grew 8708% from 2021 to 2024. Method
- In 2024 it paid out 94% 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 2024, annual grant giving ranged from $65K (2021) to $5.7M (2024). In 2024 it made 6 grants totaling $5.7M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Community Foundation of the Florida Keys Key West, FL | Unrestricted | $1,487,500 |
| United Way of Collier and the Keys Naples, FL | Unrestricted | $1,487,500 |
| Communities Foundation of Oklahoma Oklahoma City, OK | Unrestricted | $1,000,000 |
| New Hampshire Charitable Foundation Concord, NH | Unrestricted | $1,000,000 |
| Grace Jones Community Center Marathon, FL | Unrestricted | $500,000 |
| Florida Keys Children's Shelter Tavernier, FL | Unrestricted | $250,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $131,792,466 | $28,249,775 | $7,220,070 | $5,725,000 | 6 | $5,746,598 | $4,277,794 | $6,125,141 |
| 2023 | $110,762,761 | $41,837,081 | $4,928,838 | $3,070,000 | 3 | $3,097,197 | $2,050,854 | $4,707,046 |
| 2022 | $73,854,518 | $-172,097 | $4,564,971 | $3,070,000 | 3 | $3,091,814 | $442,565 | $3,485,654 |
| 2021 | $78,591,586 | $61,218,359 | $706,489 | $65,000 | 2 | $65,732 | $997,599 | $3,764,548 |
| 2020 | $18,079,716 | $18,708,376 | $1,533,618 | $1,520,000 | 3 | — | $696,737 | $665,407 |
Under IRS private-foundation payout rules, Katherine Wells Macmillan Foundation reported a distributable amount of $6.1M for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Katherine Wells Macmillan Foundation is led by Marianne Short, Director & President since 2024 (on filings since 2020); none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
Marianne Short
Director & President
Director → Director & President, 2024
On filings since 2020
0.3 hrs/week
No compensation reported
Jennifer J. Cullen
Director & Vice President
Director & Treasurer → Director & Vice President, 2024
On filings since 2020
0.3 hrs/week
No compensation reported
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.
Frequently asked questions about Katherine Wells Macmillan Foundation
How much does Katherine Wells Macmillan Foundation give each year?
Katherine Wells Macmillan Foundation gave $5.7M across 6 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $3.1M across 3 grants.
What is Katherine Wells Macmillan Foundation's typical grant size?
Katherine Wells Macmillan Foundation's median grant in 2024 was $1,000,000, and its average grant was $954,167, across 6 grants on its 2024 IRS Form 990-PF.
Where does Katherine Wells Macmillan Foundation give grants?
Katherine Wells Macmillan Foundation gives mostly in Florida: 65% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest states were Oklahoma (17%) and New Hampshire (17%).
Does Katherine Wells Macmillan Foundation give general operating support?
Yes: 100% of Katherine Wells Macmillan Foundation's 2024 grants with a stated purpose (6 of 6) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Katherine Wells Macmillan Foundation's largest grantees?
Katherine Wells Macmillan Foundation's largest 2024 grantees include Community Foundation of the Florida Keys ($1,487,500), United Way of Collier and the Keys ($1,487,500) and Communities Foundation of Oklahoma ($1,000,000), according to its 2024 IRS Form 990-PF. Together they received 69% of its itemized 2024 grant dollars.
How large is Katherine Wells Macmillan Foundation?
Katherine Wells Macmillan Foundation reported $131.8M in total assets on its 2024 IRS Form 990-PF. It paid out $5.7M in qualifying distributions that year, against a required minimum of $6.1M (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 Katherine Wells Macmillan Foundation?
Katherine Wells Macmillan Foundation is a private foundation focused on Education, based in Minneapolis, MN. It holds $131.8M in total assets as of 2024.
What is Katherine Wells Macmillan Foundation's EIN?
Katherine Wells Macmillan Foundation's EIN (Employer Identification Number) is 41-2000877. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Data update history
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 15, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 8, 2022)
- Added Form 990-PF for fiscal year 2022 (received by the IRS November 13, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 12, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 13, 2025)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Katherine Wells Macmillan Foundation funds
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