Mount Rushmore National Memorial Society
See Schedule O.
Key facts about Mount Rushmore National Memorial Society
In short: Mount Rushmore National Memorial Society gave $1.1M across 1 grant in 2025 (avg $1.1M), mostly in South Dakota. Source: 2025 IRS Form 990.
- EIN
- 46-0258947
- Latest 990 filing
- Form 990, 2025
- Annual giving (2025)
- $1,133,921
- Grants made (2025)
- 1
- Average grant
- $1,133,921
- Median grant
- $1,133,921
- Total assets
- $21,739,805
- Primary geography
- South Dakota (100% of itemized 2025 grant dollars)
Data from IRS Form 990, 2025; updated September 2026.
Quick answers about Mount Rushmore National Memorial Society
How much does Mount Rushmore National Memorial Society give each year?
Mount Rushmore National Memorial Society gave $1.1M across 1 grant in 2025, according to its 2025 IRS Form 990. In 2024 it gave $549K across 1 grant.
How Mount Rushmore National Memorial Society gives
- Giving fell 27% from 2022 to 2025. Method
From the foundation's IRS Form 990 filings. Methodology.
Next steps with Mount Rushmore National Memorial Society
- How to evaluate Mount Rushmore National Memorial Society as a funder
Our grant prospecting guide: read the 990-PF, check fit, and decide whether to apply.
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Financial Overview
From 2025 IRS Form 990 · View filing
Total Assets
$21.7M
+5.2% YoY
Annual Giving
$1.1M
+106.7% YoY
Grant Count
1
+0.0% YoY
Avg Grant Size
$1.1M
+106.7% YoY
About Mount Rushmore National Memorial Society
Based on IRS filings
Mount Rushmore National Memorial Society is a nonprofit organization, based in Rapid City, SD. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $21.7M in total assets. In 2025, it awarded 1 grant totaling $1.1M. Net investment income was $1.3M.
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 1 itemized 2025 grant dollars.
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $21,739,805 | $20,657,217 | $19,868,568 |
| Revenue | $3,289,509 | $3,123,880 | $2,999,799 |
| Expenses | $2,962,230 | $2,755,474 | $2,384,540 |
| Qualifying Distributions | — | — | — |
| Net Investment Income | $1,335,345 | $1,317,665 | $874,323 |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2025 (received by the IRS May 14, 2026)
- Updated Form 990 for fiscal year 2019 (received by the IRS August 31, 2020)
- Updated Form 990 for fiscal year 2020 (received by the IRS November 12, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS November 9, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS November 14, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS November 15, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS May 9, 2025)
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 1 recipients in 2025
Grant Size Distribution
5 grants across all recorded years
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Department of Interior - NPS - Mount Rushmore National Memorial Keystone, SD | Aid to the Park | $1,133,921 |
Leadership & Key People
Officers and directors from IRS filings
Mount Rushmore National Memorial Society is led by Diana Nielsen, CEO on every filing since 2021; 3 of 15 officers listed in 2025 are compensated.
Officers on the 2025 filing
Diana Nielsen
CEO
On filings since 2021
40 hrs/week
$113K (2021) → $128K (2025)
Eileen Rossow
President
Board Member → Vice President, 2023
Vice President → President, 2025
On filings since 2020
5 hrs/week
No compensation reported
Jackie Spreizer
Director of Finance
On filings since 2021
40 hrs/week
$31K (2021) → $82K (2025)
Stephanie Helms
Director of Philanthropy
On filings since 2024
40 hrs/week
$104K (2024) → $108K (2025)
Aaron Galloway
Board Member
President → Past President, 2023
Past President → Board Member, 2025
On filings since 2019
3 hrs/week
No compensation reported
Anthony Cleberg
Treasurer
On filings since 2019
5 hrs/week
No compensation reported
Brian Hagg
Board Member
On filings since 2019
3 hrs/week
No compensation reported
Jeffrey Connolly
Board Member
Secretary → Board Member, 2023
On filings since 2019
3 hrs/week
No compensation reported
John Rozell
Board Member
On filings since 2019
3 hrs/week
No compensation reported
Marnie Herrmann
Past President
Vice President → President, 2023
President → Past President, 2025
On filings since 2019
5 hrs/week
No compensation reported
Toni Logar
Board Member
On filings since 2019
3 hrs/week
No compensation reported
Rollie Noem
Board Member
On filings since 2020
3 hrs/week
No compensation reported
Rich Kinzley
Vice President
Board Member → Secretary, 2023
Secretary → Vice President, 2025
On filings since 2021
5 hrs/week
No compensation reported
Andy Perucci
Board Member
On filings since 2024
3 hrs/week
No compensation reported
Dan Wenk
Secretary
Board Member → Secretary, 2025
On filings since 2024
5 hrs/week
No compensation reported
Former officers (9)
- Former: Michael Diedrich (2019–2024) — Board Member
- Former: Gary Brown (2019–2023) — Board Member
- Former: Kay Jorgensen (2019–2022) — Past President
- Former: Lloyd Sohl (2019–2021) — Board Member
- Former: Sandra Weaver (2019–2021) — Director of Finance
- Former: Tim Raben (2019–2021) — Board Member
- Former: Diana Saathoff (2019–2020) — CEO
- Former: Roxann Basham (2019–2020) — Board Member
- Former: Lynn Bauter (2019) — Director of Finance
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
Frequently Asked Questions
How large is Mount Rushmore National Memorial Society?
As of 2025, Mount Rushmore National Memorial Society holds $21.7M in total assets with $3.3M in annual revenue. It awarded 1 grant totaling $1.1M in 2025.
Where does Mount Rushmore National Memorial Society operate?
Mount Rushmore National Memorial Society has awarded grants in South Dakota.
What is Mount Rushmore National Memorial Society's EIN?
Mount Rushmore National Memorial Society's EIN (Employer Identification Number) is 46-0258947. IRS Form 990 filing data is available on this page for 2019–2025.
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Data last updated September 2026. Sourced from IRS Form 990 filings.