Nonprofit · EIN 84-1209568
DR KEN THROLSON AMERICAN BISON FOUNDATION
Tax-exempt · RAPID CITY, SD 57703
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $69,010 | $32,964 | $36,046 | $616,614 | $208 | $616,406 |
| December 31, 2024 | 990 | $42,796 | $21,957 | $20,839 | $535,969 | $192 | $535,777 |
| December 31, 2023 | 990-EZ | $34,687 | $20,421 | $14,266 | $467,775 | – | $467,775 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $21,991
- Program service revenue
- $0
- Investment income
- $43,149
- Net gain from sales of assets
- $32,101
- Net income from fundraising events
- $3,870
- Other revenue
- $3,870
Expenses
- Grants and similar amounts paid
- $25,375
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $3,048
- Program services (functional)
- $25,375
- Management and general (functional)
- $7,589
Balance sheet and other
- Total assets, start of year
- $535,969
- Total assets, end of year
- $616,614
- Total liabilities, end of year
- $208
- Net assets, end of year
- $616,406
- Publicly traded securities
- $561,404
- Gross receipts
- $114,841
- Employees
- 0
- Volunteers
- 5
- Year formed
- 1992
- State of legal domicile
- SD
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| JIM MATHESON | EXECUTIVE DI Officer | 1 | $0 | $117,191 | $25,962 |
| ACE WARD | PRESIDENT Trustee or director, Officer | 1 | $0 | $0 | $0 |
| DICK DEHRING | VICE PRESIDE Trustee or director, Officer | 1 | $0 | $0 | $0 |
| WAYNE COOK | TREASURER Trustee or director, Officer | 1 | $0 | $0 | $0 |
| PETER COOK | SECRETARY Trustee or director, Officer | 1 | $0 | $0 | $0 |
| BRIAN WARD | BOARD MEMBER Trustee or director | 1 | $0 | $0 | $0 |
990 for the year ended December 31, 2024: 6 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JIM MATHESON | EXECUTIVE DI Officer | 1 | $0 |
| ACE WARD | PRESIDENT Trustee or director, Officer | 1 | $0 |
| DICK DEHRING | VICE PRESIDE Trustee or director, Officer | 1 | $0 |
| WAYNE COOK | TREASURER Trustee or director, Officer | 1 | $0 |
| PETER COOK | SECRETARY Trustee or director, Officer | 1 | $0 |
| BRIAN WARD | BOARD MEMBER Trustee or director | 1 | $0 |
990-EZ for the year ended December 31, 2023: 7 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Ace Ward | President | 1 | $0 |
| Dick Gehring | Vice President | 1 | $0 |
| Wayne Cook | Treasurer | 1 | $0 |
| Peter Cook | Secretary | 1 | $0 |
| Brian Ward | Board Member | 1 | $0 |
| Dr Ken Throlson | Past President | 1 | $0 |
| Jim Matheson | Executive Dir. | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 711 N CREEK DR, RAPID CITY, SD 57703-2220
- In care of
- % KEN THROLSON PRES
- Principal officer (990 for 2025)
- JIM MATHESON, 711 N CREEK DRIVE, RAPID CITY, SD 57703
- Signed the 990
- JIM MATHESON, EXECUTIVE DIRECTOR
- Phone
- (303) 292-2833
- Return prepared by
- KETEL THORSTENSON LLP
Mission
ENHANCE THE HEALTH AND WELL BEING OF THE AMERICAN BISON.
Program accomplishments
- THE DR. KEN THROLSON AMERICAN BISON FOUNDATION IS A 501(C)(3) NONPROFIT ORGANIZATION THAT WORKS TO ENHANCE THE HEALTH AND WELL BEING OF THE AMERICAN BISON. THIS ACTIVITY INCLUDES RESEARCH INTO ACTIVITIES OF ANIMAL HUSBANDRY PRACTICES AND PROMOTES HERD HEALTH. OTHER ACTIVITIES INCLUDE THE PROMOTION AND SUPPORT OF EDUCATION SCHOLARSHIPS THAT PROVIDE FOR VETERINARY RESEARCH INTO BISON HEALTH AND LONGEVITY.Expenses $25,375 · grants $25,375
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 84-1209568
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Supporting organization (509(a)(3))
- Donations deductible (Pub 78)
- Supporting organization of unknown type
- Exempt since
- 1992
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $616,614
- Income (IRS master file)
- $114,841
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $69,010 | $32,964 | $616,614 | IRS |
| 990 | December 2024 | $42,796 | $21,957 | $535,969 | XML |
| 990-EZ | December 2023 | $34,687 | $20,421 | $467,775 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 84-1209568).
Questions about DR KEN THROLSON AMERICAN BISON FOUNDATION
- What is the EIN of DR KEN THROLSON AMERICAN BISON FOUNDATION?
- The employer identification number (EIN) of DR KEN THROLSON AMERICAN BISON FOUNDATION is 84-1209568.
- Is DR KEN THROLSON AMERICAN BISON FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1992.
- Are donations to DR KEN THROLSON AMERICAN BISON FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Supporting organization of unknown type).
- Which annual return does DR KEN THROLSON AMERICAN BISON FOUNDATION file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of DR KEN THROLSON AMERICAN BISON FOUNDATION due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did DR KEN THROLSON AMERICAN BISON FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of DR KEN THROLSON AMERICAN BISON FOUNDATION?
- The 990 for the year ended December 31, 2025 names JIM MATHESON.
- Who are the officers and directors of DR KEN THROLSON AMERICAN BISON FOUNDATION?
- The 990 for the year ended December 31, 2025 lists 6 people; 0 received compensation from the organization.
- How much revenue does DR KEN THROLSON AMERICAN BISON FOUNDATION have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $69,010, expenses of $32,964 and total assets of $616,614 at year end.
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