Nonprofit · EIN 20-8784637
WEGNER ARBORETUM SOCIETY
Tax-exempt · SIOUX FALLS, SD 57110
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $309,451 | $480,358 | -$170,907 | $581,218 | $73,727 | $507,491 |
| December 31, 2023 | 990 | $856,710 | $628,343 | $228,367 | $711,219 | $41,980 | $669,239 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $199,423
- Program service revenue
- $91,214
- Investment income
- $18,415
- Other revenue
- $399
Expenses
- Grants and similar amounts paid
- $311,833
- Compensation of officers, directors and key employees
- $60,005
- Other salaries and wages
- $54,984
- Salaries, compensation and benefits (total)
- $124,007
- Professional fundraising fees
- $0
- Accounting fees
- $6,808
- Travel
- $1,463
- Depreciation
- $1,106
- Program services (functional)
- $480,358
Balance sheet and other
- Total assets, start of year
- $711,219
- Total assets, end of year
- $581,218
- Total liabilities, end of year
- $73,727
- Net assets, end of year
- $507,491
- Land, buildings and equipment
- $4,185
- Net assets without donor restrictions
- $408,655
- Net assets with donor restrictions
- $98,836
- Gross receipts
- $309,451
- Employees
- 5
- Volunteers
- 13
- Year formed
- 2007
- 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, 2024, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Mike Cooper | Executive Dir. Trustee or director | 30 | $60,005 |
| Heather Kittleson | Director Trustee or director | 0 | $0 |
| Ben Arndt | Treasurer Trustee or director, Officer | 0 | $0 |
| Mike Crane | President Trustee or director, Officer | 0 | $0 |
| Anthony Pizer | Director Trustee or director | 0 | $0 |
| Michelle Erpenbach | Secretary Trustee or director, Officer | 0 | $0 |
| Robin Arden | Director Trustee or director | 0 | $0 |
| Dominic Walkes | Vice President Trustee or director, Officer | 0 | $0 |
| Dick Brown | Director Trustee or director | 0 | $0 |
| Paul DeJong | Director Trustee or director | 0 | $0 |
| David Rezac | Director Trustee or director | 0 | $0 |
| Ann Wilson | Director Trustee or director | 0 | $0 |
| Scott Anderson | Government Apt Trustee or director | 0 | $0 |
| Don Kearney | Government Apt. Trustee or director | 0 | $0 |
990 for the year ended December 31, 2023: 14 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Mike Cooper | Executive Dir. Trustee or director | 30 | $57,100 |
| Heather Kittleson | Director Trustee or director | 0 | $0 |
| Ben Arndt | Treasurer Trustee or director, Officer | 0 | $0 |
| Mike Crane | President Trustee or director, Officer | 0 | $0 |
| Anthony Pizer | Director Trustee or director | 0 | $0 |
| David Rezac | Vice President Trustee or director | 0 | $0 |
| Robin Arden | Director Trustee or director | 0 | $0 |
| Dominic Walkes | Vice President Trustee or director, Officer | 0 | $0 |
| Dick Brown | Director Trustee or director | 0 | $0 |
| Michelle Erpenbach | Secretary Trustee or director, Officer | 0 | $0 |
| Ann Wilson | Director Trustee or director | 0 | $0 |
| Paul DeJong | Director Trustee or director | 0 | $0 |
| Scott Anderson | Government Apt Trustee or director | 0 | $0 |
| Don Kearney | Government Apt. Trustee or director | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 1900 S PERRY PL, SIOUX FALLS, SD 57110-7675
- In care of
- % CHARLES D GULLICKSON
- Principal officer (990 for 2024)
- Mike Cooper, 1900 S Perry Place, Sioux Falls, SD 57110
- Signed the 990
- Mike Cooper, Executive Dir.
- Phone
- (605) 367-4414
- Return prepared by
- Nelson & Nelson CPAs LLP
Mission
To nurture connections between plants and people, past and present, in an inspiring natural setting that invites discovery.
Program accomplishments
- The Arboretum is a unique place fore residents of and visitors to South Dakota. It is open 365 days a year to be a living exhibition of important tree species, a gathering place, and a beautiful escape - a place to explore something new for the over 9,000 visitors that attended one of our many scheduled events during 2018.Expenses $480,358
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 | Not on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 20-8784637
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2008
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Arts, culture and humanities (A80)
- Assets (IRS master file)
- $581,218
- Income (IRS master file)
- $309,451
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $309,451 | $480,358 | $581,218 | XML |
| 990 | December 2023 | $856,710 | $628,343 | $711,219 | XML |
| 990 | December 2022 | $407,992 | $296,931 | $459,000 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990-EZ | December 2018 | – | – | – | 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 20-8784637).
Questions about WEGNER ARBORETUM SOCIETY
- What is the EIN of WEGNER ARBORETUM SOCIETY?
- The employer identification number (EIN) of WEGNER ARBORETUM SOCIETY is 20-8784637.
- Is WEGNER ARBORETUM SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2008.
- Are donations to WEGNER ARBORETUM SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does WEGNER ARBORETUM SOCIETY 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 WEGNER ARBORETUM SOCIETY due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did WEGNER ARBORETUM SOCIETY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of WEGNER ARBORETUM SOCIETY?
- The 990 for the year ended December 31, 2024 names Mike Cooper.
- Who are the officers and directors of WEGNER ARBORETUM SOCIETY?
- The 990 for the year ended December 31, 2024 lists 14 people; 1 received compensation from the organization, the highest $60,005 (Mike Cooper, Executive Dir.).
- How much revenue does WEGNER ARBORETUM SOCIETY have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $309,451, expenses of $480,358 and total assets of $581,218 at year end.
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All nonprofits in SIOUX FALLS · South Dakota · Arts, culture and humanities