Nonprofit · EIN 39-1413448
CLEAN WISCONSIN INC
Tax-exempt · MADISON, WI 53703
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $5,017,740 | $3,804,486 | $1,213,254 | $6,556,390 | $695,611 | $5,860,779 |
| December 31, 2024 | 990 | $4,028,197 | $3,523,057 | $505,140 | $4,560,968 | $186,937 | $4,374,031 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $4,809,403
- of which government grants
- $60,156
- Program service revenue
- $151,026
- Investment income
- $97,813
- Net gain from sales of assets
- $30
- Net income from fundraising events
- -$40,502
- Other revenue
- -$40,502
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $168,737
- Other salaries and wages
- $2,262,238
- Salaries, compensation and benefits (total)
- $2,849,905
- Professional fundraising fees
- $0
- Accounting fees
- $112,475
- Occupancy
- $153,071
- Travel
- $62,567
- Depreciation
- $12,698
- Program services (functional)
- $3,159,234
- Management and general (functional)
- $401,872
- Fundraising (functional)
- $243,380
Balance sheet and other
- Total assets, start of year
- $4,560,968
- Total assets, end of year
- $6,556,390
- Total liabilities, end of year
- $695,611
- Net assets, end of year
- $5,860,779
- Land, buildings and equipment
- $122,636
- Publicly traded securities
- $1,732,407
- Net assets without donor restrictions
- $2,902,065
- Net assets with donor restrictions
- $2,958,714
- Gross receipts
- $5,531,202
- Employees
- 42
- Volunteers
- 40
- Year formed
- 1982
- State of legal domicile
- WI
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 | Other / benefits |
|---|---|---|---|---|
| MARK REDSTEN | PRESIDENT & CEO Trustee or director, Officer | 40 | $159,185 | $9,551 |
| DAVID TIPSON | VICE PRESIDENT Highest-paid employee | 40 | $141,900 | $8,514 |
| KATHRYN NEKOLA | GENERAL COUNSEL Highest-paid employee | 40 | $134,959 | $8,100 |
| AMY BARRILLEAUX | COMMUNICATIONS DIRECTOR Highest-paid employee | 40 | $126,700 | $7,500 |
| SARA WALLING | WATER & AGRICULTURE PROGRAM DIRECTOR Highest-paid employee | 40 | $112,191 | $6,791 |
| BRETT KORTE | STAFF ATTORNEY Highest-paid employee | 40 | $103,830 | $6,265 |
| ARUN SONI | IMMEDIATE PAST CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| JOSH NEUDORFER | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| MICHAEL WEISS | DIRECTOR Trustee or director | 2 | $0 | $0 |
| ANN BRODEK | DIRECTOR Trustee or director | 1 | $0 | $0 |
| IRINA GOKHMAN | VICE-CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| CHRISTA WAGNER | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JORDAN FARRELL | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CELESTINE JEFFREYS | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CHARLES HUA | DIRECTOR Trustee or director | 1 | $0 | $0 |
7 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ISAAC SHOWAKI | DIRECTOR Trustee or director | 1 | $0 |
| MARCELIA NICHOLSON | DIRECTOR Trustee or director | 1 | $0 |
| CHRIS SURGES | DIRECTOR Trustee or director | 1 | $0 |
| JOHN CLANCY | SECRETARY Trustee or director, Officer | 1 | $0 |
| JULIA PROHASKA | SECOND VICE-CHAIR Trustee or director, Officer | 1 | $0 |
| RYAN ENGELHARDT | TREASURER Trustee or director, Officer | 1 | $0 |
| ELIZABETH FEDER | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 22 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARK REDSTEN | PRESIDENT/CEO Officer | 40 | $157,976 | $9,121 |
| DAVID TIPSON | VICE PRESIDENT Highest-paid employee | 40 | $129,559 | $7,774 |
| KATHRYN NEKOLA | GENERAL COUNSEL Highest-paid employee | 40 | $128,559 | $7,716 |
| AMY BARRILLEAUX | COMMUNICATIONS DIRECTOR Highest-paid employee | 40 | $118,499 | $7,302 |
| ARUN SONI | CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| JOSH NEUDORFER | VICE CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| MICHAEL WEISS | TREASURER Trustee or director, Officer | 12 | $0 | $0 |
| ANN BRODEK | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| KAREN KNETTER | PAST CHAIR (THRU OCTOBER) Trustee or director | 1 | $0 | $0 |
| ANDREW HOYOS | DIRECTOR Trustee or director | 1 | $0 | $0 |
| IRINA GOKHAM | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CHRISTA WAGNER | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JORDAN FARRELL | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CELESTINE JEFFREYS | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CHARLES HUA | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CARL SINDERBRAND | DIRECTOR Trustee or director | 1 | $0 | $0 |
| ISAAC SHOWAKI | DIRECTOR Trustee or director | 1 | $0 | $0 |
| ELIZABETH FEDER | DIRECTOR Trustee or director | 1 | $0 | $0 |
| MARCELIA NICHOLSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CHRIS SURGES | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOHN CLANCY | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JULIA PROHASKA | DIRECTOR Trustee or director | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 634 W MAIN ST STE 300, MADISON, WI 53703-2687
- Principal officer (990 for 2025)
- MARK REDSTEN, 634 W MAIN ST 300, MADISON, WI 53703
- Signed the 990
- MARK REDSTEN, PRESIDENT & CEO
- Phone
- (608) 251-7020
- Website
- CLEANWISCONSIN.ORG
- Return prepared by
- WEGNER CPAS LLP
Mission
TO PROTECT AND PRESERVE WISCONSIN'S CLEAN AIR, WATER, AND NATURAL HERITAGE.
Program accomplishments
- ENERGY - WORKING TO INCREASE THE STATE'S INVESTMENT IN ENERGY EFFICIENT AND RENEWABLE ENERGY SOURCES, THUS REDUCING GLOBAL WARMING GAS EMISSIONS, BY MOVING WISCONSIN FORWARD WITH THE CLEAN ENERGY JOBS ACT, INCREASING ENERGY EFFICIENCY IN WISCONSIN, REDUCING WISCONSIN'S CONTRIBUTION TO GLOBAL WARMING, PROTECTING WISCONSIN FROM UNSAFE NUCLEAR POWER PLANTS AND TOXIC WASTE, INCREASING RENEWABLE ENERGY IN WISCONSIN, AND STOPPING ALLIANT ENERGY'S PROPOSED COAL PLANT. TODAY'S INNOVATIVE TECHNOLOGIES COMBINED WITH ABUNDANT WISCONSIN RESOURCES, LIKE WIND AND AGRICULTURE BYPRODUCTS, OFFER AN OPPORTUNITY TO CREATE NEW JOBS AND ECONOMIC ACTIVITY WITH CLEAN, EFFICIENT, AND SAFE ENERGY SOURCES.Expenses $1,796,937 · revenue $85,902
- WATER - WORKING TO PROTECT AND IMPROVE WISCONSIN'S WATERS BY PASSING AND ENFORCING THE GREAT LAKES COMPACT, RESTORING THE GREAT LAKES, PROTECTING WISCONSIN'S GROUNDWATER, REDUCING MERCURY POLLUTION THAT IS CONTAMINATING OUR LAKES AND FISH AND HARMING OUR CITIZENS, AND REDUCING THE AMOUNT OF ANIMAL WASTE, FERTILIZERS AND TOXINS POLLUTING OUR LAKES AND RIVERS.Expenses $1,362,297 · revenue $65,124
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 on file |
IRS record
- EIN
- 39-1413448
- 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
- 1982
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C20)
- Assets (IRS master file)
- $6,556,390
- Income (IRS master file)
- $5,531,202
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $5,017,740 | $3,804,486 | $6,556,390 | XML |
| 990 | December 2024 | $4,028,197 | $3,523,057 | $4,560,968 | XML |
| 990 | December 2023 | $3,111,326 | $2,897,394 | $4,103,116 | IRS |
| 990 | December 2022 | $2,730,695 | $2,515,016 | $3,857,370 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | 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 39-1413448).
Questions about CLEAN WISCONSIN INC
- What is the EIN of CLEAN WISCONSIN INC?
- The employer identification number (EIN) of CLEAN WISCONSIN INC is 39-1413448.
- Is CLEAN WISCONSIN INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1982.
- Are donations to CLEAN WISCONSIN INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does CLEAN WISCONSIN INC 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 CLEAN WISCONSIN INC 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 CLEAN WISCONSIN INC 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 CLEAN WISCONSIN INC?
- The 990 for the year ended December 31, 2025 names MARK REDSTEN.
- Who are the officers and directors of CLEAN WISCONSIN INC?
- The 990 for the year ended December 31, 2025 lists 22 people; 6 received compensation from the organization, the highest $159,185 (MARK REDSTEN, PRESIDENT & CEO).
- How much revenue does CLEAN WISCONSIN INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $5,017,740, expenses of $3,804,486 and total assets of $6,556,390 at year end.
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