F Felix Foundation
F Felix Foundation is a private foundation, based in Providence, RI. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $3.8M in total assets. In 2025, it awarded 6 grants totaling $120K. Net investment income was $237K.
F Felix Foundation at a glance
In short: F Felix Foundation gave $120K across 6 grants in 2025 (avg $20K), top state District of Columbia. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $120,000
- -7.0% vs 2024
- Grants made (2025)
- 6
- +0.0% vs 2024
- Average grant
- $20,000
- -7.0% vs 2024
- Median grant
- $22,500
- Total assets
- $3,758,147
- +2.8% vs 2024
- Primary geography
- District of Columbia (33% 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 F Felix Foundation funds
How this funder distributes its grants
Top Recipients
Top 6 recipients in 2025
The largest 2025 recipient was Mighty Earth Inc ($25K). Together the top 6 received $120K.
Grant Size Distribution
37 grants across all recorded years
The most common grant size was under $50K: 36 grants of 37 (97%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 6 itemized grants.
States
Cities
How F Felix Foundation gives
- Giving held roughly steady from 2022 to 2025 (−3%). 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 2019 to 2025, annual grant giving ranged from $111K (2019) to $158K (2020). In 2025 it made 6 grants totaling $120K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Mighty Earth Inc Washington, DC | Charitable Donation | $25,000 |
| Pricing Carbon Initiative Inc South Lee, MA | Charitable Donation | $25,000 |
| Spring Street Climate Fund Brooklyn, NY | Charitable Donation | $25,000 |
| Five Oaks Ag Research and Education Center Humphrey, AR | Charitable Donation | $20,000 |
| Foundation Earth Washington, DC | Charitable Donation | $15,000 |
| Youth for Environmental Sanity Berkeley, CA | Charitable Donation | $10,000 |
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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 | $3,758,147 | $259,236 | $219,512 | $120,000 | 6 | $171,737 | $236,870 | $174,899 |
| 2024 | $3,656,048 | $289,406 | $235,667 | $129,000 | 6 | $193,708 | $267,510 | $168,324 |
| 2023 | $3,238,368 | $97,353 | $211,987 | $115,000 | 5 | $180,117 | $76,583 | $157,356 |
| 2022 | $3,026,848 | $151,357 | $220,542 | $124,200 | 13 | $190,200 | $129,578 | $159,688 |
| 2021 | $3,531,070 | $34,448 | $264,243 | $154,400 | 7 | — | $28,537 | $172,643 |
| 2020 | $3,495,916 | $46,112 | $260,976 | $157,900 | 10 | — | $43,121 | $171,201 |
| 2019 | $3,473,915 | $36,934 | $212,195 | $111,200 | 10 | — | $60,165 | $174,827 |
Under IRS private-foundation payout rules, F Felix Foundation reported a distributable amount of $175K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
F Felix Foundation is led by Jesse Mazer, President since 2022 (on filings since 2021); 1 of 3 officers listed in 2025 is compensated.
Officers on the 2025 filing
Jesse Mazer
President
Vice President → President, 2022
On filings since 2021
15 hrs/week
$4K (2021) → $48K (2025)
Magdalena Mazer
Director
Treasurer & Secretary → Director, 2023
On filings since 2019
0.5 hrs/week
$16K (2019) → $0 (2025)
Alma Colburn
Director
On filings since 2023
0.5 hrs/week
No compensation reported
Former officers (1)
- Former: Robert Mazer (2019–2022) — Prior President & Director
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $48K, to Jesse Mazer (President).
Frequently asked questions about F Felix Foundation
How much does F Felix Foundation give each year?
F Felix Foundation gave $120K across 6 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $129K across 6 grants.
What is F Felix Foundation's typical grant size?
F Felix Foundation's median grant in 2025 was $22,500, and its average grant was $20,000, across 6 grants on its 2025 IRS Form 990-PF.
Where does F Felix Foundation give grants?
F Felix Foundation's top state is District of Columbia, with 33% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Massachusetts (21%) and New York (21%). The most frequent recipient cities were Washington, DC (2 grants).
Does F Felix Foundation give general operating support?
Not in 2025: none of the 6 grants with a stated purpose on F Felix Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Charitable Donation" (6 grants).
Who are F Felix Foundation's largest grantees?
F Felix Foundation's largest 2025 grantees include Mighty Earth Inc ($25,000), Pricing Carbon Initiative Inc ($25,000) and Spring Street Climate Fund ($25,000), according to its 2025 IRS Form 990-PF. Together they received 63% of its itemized 2025 grant dollars.
How large is F Felix Foundation?
F Felix Foundation reported $3.8M in total assets on its 2025 IRS Form 990-PF. It paid out $172K in qualifying distributions that year, against a required minimum of $175K (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 F Felix Foundation's EIN?
F Felix Foundation's EIN (Employer Identification Number) is 04-3464255. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS January 23, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS March 1, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS February 9, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS February 2, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS February 14, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS January 29, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS February 6, 2026)
- IRS filings on file for fiscal years 2019–2025
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