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APPLIED ECOLOGICAL INSTITUTE INC

EIN 85-4306479 BRODHEAD, WI

Browse the largest nonprofits in Wisconsin

Revenue 2024
$359,901
Expenses 2024
$262,086

Program services were 76.8% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C30
Classification
1200
Street
PO BOX 345

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

AEI IS A NON PROFIT IDEATION COLLABORATIVE STUDIO CREATING GLOBALSCALE, ECOLOGICAL BASED SOLUTIONS FOR A CLIMATE POSITIVE FUTURE.

  • APPLIED ECOLOGICAL INSTITUTE (AEI) WAS ESTABLISHED TO INNOVATE ECOLOGICAL SOLUTIONS AND APPROACHES TO ADDRESS SOME OF THE MOST CHALLENGING ECOLOGICAL PROBLEMS ON THE PLANET. THESE INCLUDE ECOLOGICAL CHALLENGES WITH CLIMATE CHANGE, WATER AVAILABILITY, FOOD QUALITY AND NUTRITIONAL DENSITY, BIODIVERSITY DECLINE, AND EQUITABLE ACCESS TO NATURAL RESOURCES FOR A VARIETY OF USES ALONG WITH THE RESTORATION OF ECOSYSTEM AND WILDLIFE HABITAT. THIS WORK IS ENTIRELY FOCUSED ON CREATING PUBLIC BENEFITS BY HELPING LAND USE CHANGE AGENTS MAKE BETTER DECISIONS BY LETTING NATURE AND ECOSYSTEM RESTORATION PRINCIPLES GUIDE THEIR DECISION. IN 2024, THE ORGANIZATION ENGAGED IN TWO LONG-TERM RESEARCH PROJECTS: 1) REVIVE & RESTORE - RESEARCH OF EXCESSIVE DISTURBANCE OF FORESTLAND HISOTRICALLY BY PASSENGER PIGEON MEGA-FLOCKS AND WORK ON BIODIVERSITY OF BIRDS AND NATIVE SPECIES AROUND ADAPTIVE MULTI-PADDOCK GRAZING METHODS. 2) NATURE'S REGISTRY - THE TRACKING AND CREDITING OF CARBON CREDITS FOR THE VOLUNTARY CARBON MARKET.

    Expenses $201,189 · Revenue $354,943

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Steven I Apfelbaum

    President

    Total calculated
    $0
    Hours/week
    8
  • John Elstrott

    Director

    Total calculated
    $0
    Hours/week
    1
  • Mark Retzloff

    Director

    Total calculated
    $0
    Hours/week
    1
  • Susan Lehnhart

    Director

    Total calculated
    $0
    Hours/week
    1
  • Chris Melchon

    Director

    Total calculated
    $0
    Hours/week
    1

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $359,901
    Expenses
    $262,086
    Contributions
    $4,958
    Grants paid
    $0
  • 2023
    Revenue
    $615,792
    Expenses
    $786,181
    Contributions
    $1,500
    Grants paid
    $0
  • 2022
    Revenue
    $493,008
    Expenses
    $1,062,902
    Contributions
    $2,441
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $4,866,266
    Expenses
    $65,533
    Assets (EOY)
    $8,379,599

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Form 990-N e-Postcard, tax year 2020

Tax period
1 January 2020 to 31 December 2020
Principal officer
Steven Apfelbaum
Mailing address
201 W MONTECITO STSANTA BARBARA CA 93101
Website
Something was entered that is not a web address, so it is not shown.

As filed, from the IRS e-Postcard file of 2 November 2026. The IRS publishes only each organization's most recent postcard, so earlier years are not shown. A 990-N carries no financial detail. The postcard also gives the principal officer's address, which is not shown here.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

  • 2024 MASTER SERVICES AGREEMENT FOR TWO DIFFERENT SCOPES OF WORK FOR THE PASSENGER PIGEON PROJECT

  • 2025 MASTER SERVICES AGREEMENT FROM BIOTECH FOR BIRD PROGRAM FOR NEW SCOPE OF WORK FOR THE PASSENGER PIGEON PROJECT

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.