Grand Teton National Park Foundation
Grand Teton National Park Foundation (the Foundation) is a private, nonprofit organization whose mission is to partner with Grand Teton National Park to steward, protect, and enhance all that is special in the park. Budget limitations, combined with increasing visitation, led the National Park Service to create partnerships with organizations like the Foundation to raise private money for special park needs. The Foundation initiates improvements, critical research, and projects that improve visitors experiences, creating a solid future for Grand Teton. Since 1997, the organization has raised funds for efforts that connect youth to nature, preserve cultural resources, protect wildlife and natural resources, and enhance visitor experiences. In addition, the Foundation has completed capital projects such as construction of the Craig Thomas Discovery and Visitor Center, the conservation of 1,280 acres of critical wildlife habitat that was formerly owned by the state of Wyoming, the renewal
Grand Teton National Park Foundation at a glance
In short: Grand Teton National Park Foundation gave $46.2M across 1 grant in 2025 (avg $46.2M), mostly in Wyoming. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $46,216,259
- +1397.0% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $46,216,259
- +1397.0% vs 2024
- Median grant
- $46,216,259
- Total assets
- $26,316,519
- -49.4% vs 2024
- Primary geography
- Wyoming (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who Grand Teton National Park Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Grand Teton National Park ($46.2M).
Grant Size Distribution
5 grants across all recorded years
The most common grant size was in the $1–5M range: 3 grants of 5 (60%).
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 Grand Teton National Park Foundation gives
- Giving grew 739% from 2022 to 2025. Method
From the foundation's IRS Form 990 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 $2.7M (2021) to $46.2M (2025). In 2025 it made 1 grant totaling $46.2M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Grand Teton National Park Moose, WY | To Preserve the Park's Resources | $46,216,259 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $26,316,519 | $24,510,153 | $50,113,571 | $46,216,259 | 1 | $1,419,514 |
| 2024 | $52,034,264 | $34,015,141 | $6,428,947 | $3,087,217 | 1 | $1,260,849 |
| 2023 | $23,615,023 | $10,610,613 | $5,987,226 | $2,894,686 | 1 | $388,697 |
| 2022 | $17,490,260 | $12,374,107 | $8,158,030 | $5,508,369 | 1 | $1,045,249 |
| 2021 | $15,773,310 | $7,005,060 | $4,826,353 | $2,664,542 | 1 | $379,167 |
| 2020 | $14,537,425 | $5,932,392 | $8,503,597 | $6,466,421 | 1 | $360,486 |
| 2019 | $19,437,736 | $6,442,147 | $5,822,117 | $3,704,427 | 1 | $148,300 |
About Grand Teton National Park Foundation
Based on IRS filings
Grand Teton National Park Foundation is a public charity, based in Moose, WY. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $26.3M in total assets. In 2025, it awarded 1 grant totaling $46.2M. Net investment income was $1.4M.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Grand Teton National Park Foundation is led by Leslie Mattson, President on every filing since 2019; 6 of 31 officers listed in 2025 are compensated.
Officers on the 2025 filing
Leslie Mattson
President
On filings since 2019
40 hrs/week
$269K (2019) → $577K (2025)
Gregg Ward
Chairman
Director → Vice Chair, 2022
Vice Chair → Chairman, 2024
On filings since 2019
1 hr/week
No compensation reported
Debbie Barker
Director
Vice Chair → Chair, 2022
Chair → Director, 2024
On filings since 2019
1 hr/week
No compensation reported
Jeff Willemain
Director
Chair → Director, 2025
On filings since 2019
1 hr/week
No compensation reported
John Townsend
Director
On filings since 2019
1 hr/week
No compensation reported
Patti Stancarone
Director
Director → Treasurer, 2023
Treasurer → Director, 2025
On filings since 2019
1 hr/week
No compensation reported
Bruce Bowen
Director
On filings since 2020
1 hr/week
No compensation reported
Ed Riddell
Director
On filings since 2020
1 hr/week
No compensation reported
Nancy McGregor Manne
Director
On filings since 2020
1 hr/week
No compensation reported
Annie Morita
Director
On filings since 2022
1 hr/week
No compensation reported
Diana Waycott
Director
On filings since 2022
1 hr/week
No compensation reported
Douglas J. Mackenzie
Director
Director → Secretary, 2024
Secretary → Director, 2025
On filings since 2022
1 hr/week
No compensation reported
Gina Pate Pierce
Director
On filings since 2022
1 hr/week
No compensation reported
Jeff Heilbrun
Director
On filings since 2022
1 hr/week
No compensation reported
Susie Temple
Director
On filings since 2022
1 hr/week
No compensation reported
Ethan Steinberg
Director
On filings since 2023
1 hr/week
No compensation reported
Rob Wallace
Director
On filings since 2023
1 hr/week
No compensation reported
Chad Carlson
Director
On filings since 2024
1 hr/week
No compensation reported
Sean O'Malley
Director
On filings since 2024
1 hr/week
No compensation reported
Affie Ellis
Director
New on the 2025 filing
1 hr/week
No compensation reported
Chip Nisbet
Director
New on the 2025 filing
1 hr/week
No compensation reported
Laura Davis
Director
New on the 2025 filing
1 hr/week
No compensation reported
Lynn Larson
Director
New on the 2025 filing
1 hr/week
No compensation reported
Molly Ruffle
Senior Development Officer
On filings since 2019
40 hrs/week
$127K (2019) → $164K (2025)
Mary Patno
Accounting
On filings since 2020
40 hrs/week
$102K (2020) → $163K (2025)
Elise Delmolino
Vice President of Operations
Vice President → Vice President of Operations, 2024
On filings since 2022
40 hrs/week
$109K (2022) → $144K (2025)
Wayne Turner
Vice President of Development
Vice President → Vice President of Development, 2024
On filings since 2023
40 hrs/week
$100K (2023) → $176K (2025)
Ryan Kelly
Vice President Part. Projects
On filings since 2024
40 hrs/week
$127K (2024) → $141K (2025)
Tom Holland
Secretary
Director → Secretary, 2025
On filings since 2019
1 hr/week
No compensation reported
Debbie Hechinger
Vice Chair
Director → Vice Chair, 2024
On filings since 2020
1 hr/week
No compensation reported
Mary McCarthy
Treasurer
Director → Treasurer, 2025
On filings since 2024
1 hr/week
No compensation reported
Former officers (20)
- Former: Adrienne Mars (2019–2024) — Director
- Former: Charlotte Krugh (2019–2024) — Director
- Former: Maggie Gibson (2019–2024) — Director
- Former: Anil Singh (2022–2024) — Director
- Former: Kirk Davenport (2019–2023) — Director
- Former: Lisa Wan (2019–2023) — Secretary
- Former: Kirsti W. Goodwin (2022–2023) — Director
- Former: Madeline Johnson (2023) — Communications Director
- Former: Andy Schilling (2019–2022) — Treasurer
- Former: Mark Berry (2019–2022) — Vice President
- Former: Bob Hartman (2019–2021) — Director
- Former: Doug Mackenzie (2019–2021) — Director
- Former: Katharine Overlock (2019–2021) — Director
- Former: Kathryn A. Ordway (2019–2021) — Director
- Former: Larry Perlman (2019–2021) — Director
- Former: Lisa Fleischman (2019–2021) — Secretary
- Former: Molly Kelly (2019–2021) — Director
- Former: Tom Saylak (2019–2021) — Director
- Former: Max Chapman (2019) — Director
- Former: Natalie Clark (2019) — 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 $577K, to Leslie Mattson (President). 6 officers or directors reported compensation on that filing.
Frequently asked questions about Grand Teton National Park Foundation
How much does Grand Teton National Park Foundation give each year?
Grand Teton National Park Foundation gave $46.2M across 1 grant in 2025, according to its 2025 IRS Form 990. In 2024 it gave $3.1M across 1 grant.
How large is Grand Teton National Park Foundation?
Grand Teton National Park Foundation reported $26.3M in total assets on its 2025 IRS Form 990. Its revenue that year was $24.5M.
Where does Grand Teton National Park Foundation operate?
Grand Teton National Park Foundation has awarded grants in Wyoming.
What is Grand Teton National Park Foundation's EIN?
Grand Teton National Park Foundation's EIN (Employer Identification Number) is 83-0322668. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2019 (received by the IRS February 7, 2020)
- Updated Form 990 for fiscal year 2020 (received by the IRS February 4, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS February 2, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS February 8, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS February 9, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS February 12, 2025)
- Updated Form 990 for fiscal year 2025 (received by the IRS February 12, 2026)
Explore Open Grants
Browse active grant opportunities in Grand Teton National Park Foundation's focus areas in our free grants database
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