Yellowstone Forever
Yellowstone Forever ("yf") serves as the official non-profit partner for yellowstone national park ("park"). Yf's purpose is to provide grants and in-kind support to the park through philanthropic and educational initiatives.
Yellowstone Forever at a glance
In short: Yellowstone Forever gave $12.5M across 2 grants in 2026 (avg $6.3M), mostly in Wyoming. Source: 2026 IRS Form 990.
- Annual giving (2026)
- $12,545,900
- +448.2% vs 2025
- Grants made (2026)
- 2
- +100.0% vs 2025
- Average grant
- $6,272,950
- +174.1% vs 2025
- Median grant
- $6,272,950
- Total assets
- $81,873,538
- +16.1% vs 2025
- Primary geography
- Wyoming (100% of itemized 2026 grant dollars)
- Latest 990 filing
- Form 990, 2026 View filing
Data from IRS Form 990, 2026; updated September 2026.
Who Yellowstone Forever funds
How this funder distributes its grants
Top Recipients
Top 2 recipients in 2026
The largest 2026 recipient was National Park Service ($12.5M). Together the top 2 received $12.5M.
Grant Size Distribution
7 grants across all recorded years
The most common grant size was in the $1–5M range: 4 grants of 7 (57%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2026 grant dollars across all 2 itemized grants.
States
Cities
How Yellowstone Forever gives
- Giving grew 178% from 2023 to 2026. 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 2026, annual grant giving ranged from $924K (2021) to $12.5M (2026). In 2026 it made 2 grants totaling $12.5M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| National Park Service Yellowstone National P, WY | Fulfill Park Priorities | $12,534,004 |
| US Forest Service Washington, DC | Assist with futhering customer service and interpretation of public lands around quake lake | $11,896 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2026 | $81,873,538 | $34,471,459 | $25,810,384 | $12,545,900 | 2 | $2,503,146 |
| 2025 | $70,514,236 | $41,821,585 | $16,919,975 | $2,288,632 | 1 | $1,838,024 |
| 2024 | $45,715,575 | $21,308,600 | $14,470,123 | $3,323,703 | 2 | $1,288,893 |
| 2023 | $38,958,964 | $21,060,958 | $13,635,682 | $4,510,396 | 1 | $162,344 |
| 2022 | $31,698,684 | $24,864,461 | $9,707,419 | $2,395,650 | 1 | $124,416 |
| 2021 | $19,862,866 | $10,813,281 | $7,735,632 | $924,347 | 2 | $453,432 |
| 2020 | $16,824,256 | $14,346,181 | $17,207,595 | $4,082,194 | 2 | $125,538 |
| 2019 | $18,487,905 | $15,196,417 | $19,045,210 | $5,579,757 | 2 | $158,342 |
About Yellowstone Forever
Based on IRS filings
Yellowstone Forever is a public charity focused on Environment & Animals, based in Bozeman, MT. IRS filing data is available from 2019 through 2026. As of 2026, the organization holds $81.9M in total assets. In 2026, it awarded 2 grants totaling $12.5M. Net investment income was $2.5M.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Yellowstone Forever is led by Lisa Diekmann, President & CEO on every filing since 2021; 10 of 23 officers listed in 2026 are compensated.
Officers on the 2026 filing
Lisa Diekmann
President & CEO
On filings since 2021
40 hrs/week
$58K (2021) → $299K (2026)
Doug Spencer
Chair of the Board
Director → Vice Chairman, 2023
Vice Chairman → Chair of the Board, 2025
On filings since 2019
10 hrs/week
No compensation reported
Olesja Hoppe
Regional Director of Philanthropy
Regional Directory of Philanthropy → Regional Directory of Phil, 2025
Regional Directory of Phil → Regional Director of Philanthropy, 2026
On filings since 2022
40 hrs/week
$102K (2022) → $129K (2026)
Erica Cerovski
Director of Finance
New on the 2026 filing
40 hrs/week
$128K (2026)
Michael Wright
It Director
New on the 2026 filing
40 hrs/week
$124K (2026)
Bob Rowe
Director
On filings since 2019
3 hrs/week
No compensation reported
Elizabeth Webb
Director
On filings since 2019
3 hrs/week
No compensation reported
Jacqueline Rooney
Director
On filings since 2019
3 hrs/week
No compensation reported
Susan Roeder
Director
On filings since 2019
3 hrs/week
No compensation reported
Arielle Patrick
Director
On filings since 2023
3 hrs/week
No compensation reported
Stephanie Tarbet
Director
On filings since 2023
3 hrs/week
No compensation reported
David Youn
Director
On filings since 2025
3 hrs/week
No compensation reported
Paul Bertelli
Director
On filings since 2025
3 hrs/week
No compensation reported
Debbie Head
Director
New on the 2026 filing
3 hrs/week
No compensation reported
Wendie Carr
Chief Marketing Officer
On filings since 2019
40 hrs/week
$133K (2019) → $160K (2026)
Kristena Mills
Chief Operating Officer
Chief Finance Officer → Chief Operating Officer, 2026
On filings since 2021
40 hrs/week
$13K (2021) → $184K (2026)
Nina Novikoff
Chief People Officer
Chief Human Resource Officer → Chief People Officer, 2026
On filings since 2024
40 hrs/week
$127K (2024) → $168K (2026)
Samuel Barkley
Chief Development Officer
On filings since 2025
40 hrs/week
$142K (2025) → $153K (2026)
Amanda Hagerty
Chief Program Officer
New on the 2026 filing
40 hrs/week
$137K (2026)
Joseph Luttrell
Chief Retail Officer
New on the 2026 filing
40 hrs/week
$127K (2026)
Carolyn Heppel
Secretary
Director → Secretary, 2020
On filings since 2019
10 hrs/week
No compensation reported
Michael Solot
Treasurer
Director → Treasurer, 2025
On filings since 2020
10 hrs/week
No compensation reported
Nicholas Olds
Vice Chair
Director → Vice Chair, 2025
On filings since 2023
10 hrs/week
No compensation reported
Former officers (27)
- Former: Annie Graham (2019–2025) — Director
- Former: Tom Detmer (2019–2025) — Director
- Former: Lindsay Robb (2024–2025) — Chief Operating Officer
- Former: John Costello (2019–2024) — Director
- Former: Kevin Butt (2019–2024) — Chairman
- Former: Steve Mount (2020–2024) — Regional Director of Phila
- Former: Laura Orvidas (2021–2024) — Director
- Former: Larry Patrick (2021–2023) — Director
- Former: Thomas Tull (2021–2023) — Director
- Former: Jd Davis (2022–2023) — Chief Development Officer
- Former: Edna Johnson (2019–2022) — Vice Chairman
- Former: Joe Marushack (2019–2022) — Director
- Former: Lisa Evia (2020–2022) — Director
- Former: Tim Solso (2021–2022) — Director
- Former: Jack Reddy (2022) — Former Vice President of Human Resources
- Former: Heather B. White (2019–2021) — Former President & CEO
- Former: John Walda (2019–2021) — Interim President & CEO
- Former: Wendy Stuker (2020–2021) — Chief Finance Officer
- Former: Leslie Everett (2021) — Chief of Staff
- Former: Charles B. Kaufmann III (2019–2020) — Director
- Former: Kay Yeager (2019–2020) — Chairman
- Former: Kelly Herman (2019–2020) — Chief Development Officer
- Former: Thomas Cluderay (2019–2020) — General Counsel
- Former: Terry F. Atwood (2020) — Vice President of Retail Operations
- Former: Ken Voorhis (2019) — Chief Op & Executive Director Officer
- Former: Megan Boyle (2019) — Director of Communications
- Former: Roger Keaton (2019) — Chief Finance Officer
Data from IRS Form 990 filings, 2019–2026. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2026 IRS filing
The highest reported compensation on the 2026 filing was $299K, to Lisa Diekmann (President & CEO). 10 officers or directors reported compensation on that filing.
Frequently asked questions about Yellowstone Forever
How much does Yellowstone Forever give each year?
Yellowstone Forever gave $12.5M across 2 grants in 2026, according to its 2026 IRS Form 990. In 2025 it gave $2.3M across 1 grant.
How large is Yellowstone Forever?
Yellowstone Forever reported $81.9M in total assets on its 2026 IRS Form 990. Its revenue that year was $34.5M.
What is Yellowstone Forever?
Yellowstone Forever is a public charity focused on Environment & Animals, based in Bozeman, MT. It holds $81.9M in total assets as of 2026.
Where does Yellowstone Forever operate?
Yellowstone Forever has awarded grants in District of Columbia, Wyoming.
What is Yellowstone Forever's EIN?
Yellowstone Forever's EIN (Employer Identification Number) is 47-5427975. IRS Form 990 filing data is available on this page for 2019–2026.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(9)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2020 (received by the IRS January 15, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS July 14, 2021)
- Updated Form 990 for fiscal year 2022 (received by the IRS July 15, 2022)
- Updated Form 990 for fiscal year 2023 (received by the IRS June 21, 2023)
- Updated Form 990 for fiscal year 2024 (received by the IRS June 30, 2024)
- Updated Form 990 for fiscal year 2025 (received by the IRS July 8, 2025)
- Added Form 990 for fiscal year 2019 (received by the IRS January 15, 2020)
- Added Form 990 for fiscal year 2026 (received by the IRS July 9, 2026)
- IRS filings on file for fiscal years 2020–2025
Live grants for the work Yellowstone Forever funds
Environment & Animals Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in Yellowstone Forever's focus areas in our free grants database
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Yellowstone Forever down — hundreds of funders to go?