The Gustavo Posse Foundation
The Gustavo Posse Foundation is a private foundation based in Boston, Massachusetts. Its 2024 filing reports grants to charitable organizations, including education, cultural, religious, and other organizations.
The Gustavo Posse Foundation at a glance
In short: The Gustavo Posse Foundation gave $140K across 21 grants in 2024 (avg $7K), top state District of Columbia. 15% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $140,000
- -3.4% vs 2023
- Grants made (2024)
- 21
- -12.5% vs 2023
- Average grant
- $6,667
- +10.3% vs 2023
- Median grant
- $5,000
- Total assets
- $3,126,932
- -0.5% vs 2023
- New grantees (estimate)
- 15% first-time grantees (3 of 20, 2024; small sample)
- Primary geography
- District of Columbia (4% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to The Gustavo Posse Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests for funds and states that it makes contributions only to preselected charitable organizations.
- Contact
Mailing address: 100 Belvidere St 10Th Floor E, Boston, MA 02199-7622
Phone: (617) 230-7746
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who The Gustavo Posse Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Elementary School 9 ($15K across 2 grants). Together the top 10 received $90K.
Grant Size Distribution
112 grants across all recorded years
The most common grant size was under $50K: 112 grants of 112 (100%).
Geographic Focus
Where this funder awards grants
The 2024 filing lists recipients in several states and locations. Of reported grant dollars, 89% went to recipients in a state not identified in the supplied data; 4% each went to recipients in Washington, DC, California, and Massachusetts. Listed recipients also include organizations whose locations were not specified.
Grant Distribution by State
Share of 2024 grant dollars across all 21 itemized grants.
Cities
Is The Gustavo Posse Foundation open to new grantees?
15%
first-time grantees, 2024
In 2024, 3 of 20 grantees (15%) were first-time recipients. With only 20 grantees, that is a small sample: one grantee more or less moves the share by about 5 points. First grants averaged $8K; repeat grants $7K. How we count
Medians: $10K first-time, $5K repeat.
- 80% of 2024 grantees were also funded in 2023. Method
- Giving held roughly steady from 2021 to 2024 (−16%). Method
- In 2024 it paid out 100% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $140K (2024) to $168K (2021). In 2024 it made 21 grants totaling $140K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Utu | Education Grant | $10,000 |
| The Catholic Conventode Sta | General Support | $10,000 |
| Malba - Museo De Arte Latinoamericano | General Support | $10,000 |
| Louvre Museum | General Support | $10,000 |
| Elementary School 9 | Education Grant | $10,000 |
| Catholic Archdiocese of Maldonado | General Support | $10,000 |
| Buenos Aires Cricket & Rugby Club | General Support | $10,000 |
| Vatican Museums | General Support | $5,000 |
| Unhcr Washington, DC | General Support | $5,000 |
| Sociedad Rural | General Purpose | $5,000 |
Ready to take the next step with The Gustavo Posse Foundation?
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 | $3,126,932 | $128,585 | $145,484 | $140,000 | 21 | $140,000 | $142,216 | $139,823 |
| 2023 | $3,143,831 | $132,896 | $150,009 | $145,000 | 24 | $145,000 | $129,066 | $138,122 |
| 2022 | $3,160,944 | $84,137 | $156,348 | $150,000 | 21 | $150,000 | $106,984 | $144,387 |
| 2021 | $3,233,155 | $102,617 | $175,388 | $167,500 | 27 | $167,500 | $132,063 | $159,890 |
| 2020 | $3,305,926 | $132,538 | $163,228 | $155,000 | 19 | — | $135,462 | $158,731 |
Under IRS private-foundation payout rules, The Gustavo Posse Foundation reported a distributable amount of $140K for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Grantmaking
In filing year 2024, the foundation gave $140,000 through 21 grants. Grants ranged from $5,000 to $10,000, with a median grant of $5,000. Listed recipients included UTU ($10,000), the Louvre Museum ($10,000), MALBA – Museo de Arte Latinoamericano ($10,000), and UNHCR ($5,000).
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Gustavo Posse and Aurelia Grizzi as trustees.
The Gustavo Posse Foundation's 2024 filing lists 2 officers; none of the 2 officers listed in 2024 report compensation.
Officers on the 2024 filing
Aurelia Grizzi
Trustee
On filings since 2020
1 hr/week
No compensation reported
Gustavo Posse
Trustee
On filings since 2020
2 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 The Gustavo Posse Foundation
How much does The Gustavo Posse Foundation give each year?
The Gustavo Posse Foundation gave $140K across 21 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $145K across 24 grants.
What is The Gustavo Posse Foundation's typical grant size?
The Gustavo Posse Foundation's median grant in 2024 was $5,000, and its average grant was $6,667, across 21 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from The Gustavo Posse Foundation that year got $8K on average.
Does The Gustavo Posse Foundation give general operating support?
Yes: 52% of The Gustavo Posse Foundation's 2024 grants with a stated purpose (11 of 21) were for general or operating support, per its 2024 IRS Form 990-PF. Recurring purposes include "Education Grant" (10 grants).
Who are The Gustavo Posse Foundation's largest grantees?
The Gustavo Posse Foundation's largest 2024 grantees include Elementary School 9 ($15,000 across 2 grants), Utu ($10,000) and The Catholic Conventode Sta ($10,000), according to its 2024 IRS Form 990-PF. Together they received 25% of its itemized 2024 grant dollars.
How large is The Gustavo Posse Foundation?
The Gustavo Posse Foundation reported $3.1M in total assets on its 2024 IRS Form 990-PF. It paid out $140K in qualifying distributions that year, against a required minimum of $140K (roughly 5% of its investment assets).
How do I apply for a grant from The Gustavo Posse Foundation?
The foundation does not accept unsolicited requests for funds and states that it makes contributions only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
Where does The Gustavo Posse Foundation make grants?
The 2024 filing lists recipients in several states and locations. Of reported grant dollars, 89% went to recipients in a state not identified in the supplied data; 4% each went to recipients in Washington, DC, California, and Massachusetts. Listed recipients also include organizations whose locations were not specified.
What is The Gustavo Posse Foundation's EIN?
The Gustavo Posse Foundation's EIN (Employer Identification Number) is 74-6521599. IRS Form 990 filing data is available on this page for 2020–2024.
Does The Gustavo Posse Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Live grants for the work The Gustavo Posse Foundation funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
- Nixa Affiliate Grantmaking Program Up to US $10,000 · Due October 19, 2026
- Community and School Grants $28,000 total pool; 10-15 grants expected · Due October 19, 2026
- Mary Pinola/Crescenta Valley Chamber Education Fund $500 - $5,000 for ongoing programs; up to $15,000 for Strategic Initiative Grants · Due October 19, 2026
Explore Open Grants
Browse active grant opportunities in The Gustavo Posse Foundation's focus areas in our free grants database
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