Gigi & Averell H Mortimer Foundation
The Gigi & Averell H Mortimer Foundation is a private foundation based in Harriman, New York. Its 2025 filing reports grants to charitable organizations in several states, including organizations focused on conservation, culture, education, health, and women entrepreneurs.
Key facts about Gigi & Averell H Mortimer Foundation
In short: Gigi & Averell H Mortimer Foundation gave $60K across 10 grants in 2025 (avg $6K), top state Florida. Source: 2025 IRS Form 990-PF.
- EIN
- 46-4323935
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $60,000
- Grants made (2025)
- 10
- Average grant
- $6,000
- Median grant
- $3,750
- Total assets
- $1,967,495
- Primary geography
- Florida (38% of itemized 2025 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Full details ↓
Data from IRS Form 990-PF, 2025; updated October 2026. Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$2.0M
+37.4% YoY
Annual Giving
$60K
Grant Count
10
Avg Grant Size
$6K
Under IRS private-foundation payout rules, Gigi & Averell H Mortimer Foundation reported a distributable amount of $79K for 2025 — the minimum it must pay out in qualifying distributions.
How Gigi & Averell H Mortimer Foundation gives
- In 2025 it paid out 76% 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.
Mission & Focus Areas
The foundation’s mission is not stated in the available information. Its 2025 grants included support for organizations whose own stated missions include empowering women entrepreneurs (Tory Burch Foundation), preserving Orange County’s historic buildings and sharing its history (Orange County Historical Society), conserving Long Island farms and natural lands (Peconic Land Trust), and restoring and protecting the Everglades through science, advocacy, and education (The Everglades Foundation).
Grantmaking
In filing year 2025, the foundation reported 10 grants totaling $60,000. Grants ranged from $1,000 to $15,000, with a median of $3,750. Its largest grants included $15,000 to Brandywire Conservancy & Museum of Art; $10,000 each to Palm Beach Zoo & Conservation Society, Cox Science Centre & Aquarium, and Tory Burch Foundation; and $5,000 to The Centre for Discovery. Other reported grants included $2,500 each to The Everglades Foundation, Peconic Land Trust, and Orange County Historical Society; $1,500 to St Jude's Children Hospital; and $1,000 to Vanderbilt University. All were listed for general support.
How to Apply
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
Ready to take the next step with Gigi & Averell H Mortimer Foundation?
Geographic Focus
Where this funder awards grants
The 2025 grant dollars went to recipients in Florida (38%), New York (33%), Pennsylvania (25%), and Tennessee (4%).
Grant Distribution by State
Share of 2025 grant dollars across all 10 itemized grants.
Cities
Giving Over Time
Total grant dollars and number of grants per year
In 2025 it made 10 grants totaling $60K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Brandywire Conservancy & Museum of Art ($15K). Together the top 10 received $60K.
Grant Size Distribution
10 grants across all recorded years
The most common grant size was under $50K: 10 grants of 10 (100%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Brandywire Conservancy & Museum of Art Chadds Ford, PA | General Support | $15,000 |
| Palm Beach Zoo & Conservation Society West Palm Beach, FL | General Support | $10,000 |
| Cox Science Centre & Aquarium West Palm Beach, FL | General Support | $10,000 |
| Tory Burch Foundation New York, NY | General Suppport | $10,000 |
| The Centre for Discovery Harris, NY | General Support | $5,000 |
| The Everglades Foundation Palmetto Bay, FL | General Support | $2,500 |
| Peconic Land Trust Southhampton, NY | General Support | $2,500 |
| Orange County Historical Society Arden, NY | General Support | $2,500 |
| St Jude's Children Hospital Memphis, TN | General Support | $1,500 |
| Vanderbilt University Nashville, TN | General Support | $1,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grants |
|---|---|---|---|---|
| 2025 | $1,967,495 | $598,505 | $62,688 | $60,000 across 10 grants |
| 2024 | $1,431,678 | $516,046 | $4,692 | 0 grants |
| 2023 | $920,324 | $359,058 | $4,240 | 0 grants |
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $1,967,495 | $1,431,678 | $920,324 |
| Revenue | $598,505 | $516,046 | $359,058 |
| Expenses | $62,688 | $4,692 | $4,240 |
| Qualifying Distributions | $60,000 | — | — |
| Net Investment Income | $21,194 | $17,726 | $10,830 |
| Distributable Amount | $79,303 | $56,288 | $31,960 |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS November 13, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 16, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 14, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 14, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 9, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 8, 2026)
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Jean M. Mortimer as chairman, Averell H. Mortimer as president/treasurer, Maxwell H. Mortimer as secretary, and Hume R. Steyer as assistant secretary.
Gigi & Averell H Mortimer Foundation is led by Averell H. Mortimer, President & Treasurer on every filing since 2020; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Averell H. Mortimer
President & Treasurer
On filings since 2020
No compensation reported
Jean M. Mortimer
Chairman
On filings since 2020
No compensation reported
Hume R. Steyer
Assistant Secretary
On filings since 2020
No compensation reported
Maxwell H. Mortimer
Secretary
On filings since 2020
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.
Contact
Mailing address: PO Box 1022, Harriman, NY 10926
Phone: (845) 351-2327
Frequently asked questions about Gigi & Averell H Mortimer Foundation
How much does Gigi & Averell H Mortimer Foundation give each year?
Gigi & Averell H Mortimer Foundation gave $60K across 10 grants in 2025, according to its 2025 IRS Form 990-PF.
What is Gigi & Averell H Mortimer Foundation's typical grant size?
Gigi & Averell H Mortimer Foundation's median grant in 2025 was $3,750, and its average grant was $6,000, across 10 grants on its 2025 IRS Form 990-PF.
Where does Gigi & Averell H Mortimer Foundation give grants?
Gigi & Averell H Mortimer Foundation's top state is Florida, with 38% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were New York (33%) and Pennsylvania (25%). The most frequent recipient cities were West Palm Beach, FL (2 grants).
Does Gigi & Averell H Mortimer Foundation give general operating support?
Yes: 100% of Gigi & Averell H Mortimer Foundation's 2025 grants with a stated purpose (10 of 10) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Gigi & Averell H Mortimer Foundation's largest grantees?
Gigi & Averell H Mortimer Foundation's largest 2025 grantees include Brandywire Conservancy & Museum of Art ($15,000), Palm Beach Zoo & Conservation Society ($10,000) and Cox Science Centre & Aquarium ($10,000), according to its 2025 IRS Form 990-PF. Together they received 58% of its itemized 2025 grant dollars.
How large is Gigi & Averell H Mortimer Foundation?
Gigi & Averell H Mortimer Foundation reported $2.0M in total assets on its 2025 IRS Form 990-PF. It paid out $60K in qualifying distributions that year, against a required minimum of $79K (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 does Gigi & Averell H Mortimer Foundation fund?
The foundation’s mission is not stated in the available information. See mission & focus areas ↑
How do I apply for a grant from Gigi & Averell H Mortimer Foundation?
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Gigi & Averell H Mortimer Foundation's EIN?
Gigi & Averell H Mortimer Foundation's EIN (Employer Identification Number) is 46-4323935. IRS Form 990 filing data is available on this page for 2020–2025.
Does Gigi & Averell H Mortimer 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.
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