Skip to content
Nonprofiteer
← All organizations

WILDERNESS VOLUNTEERS

EIN 91-1821692 PHOENIX, AZ

Largest nonprofits in Arizona

Revenue 2025
$282,787
Expenses 2025
$282,680

Program services were 64.5% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C99
Classification
1000
Street
4539 N 22ND ST STE R

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).

Other organizations at this address

32 other organizations in the IRS Business Master File list the same street address. matched by us

This address is a suite or unit (STE R). Organizations that share one are often clients of the same office-services firm, accountant or registered agent rather than related to each other.

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

Mission and programs · 2025

Mission

MAINTAINING FEDERALLY MANAGED PUBLIC LANDS WITH VOLUNTEER LABOR.

  • WILDERNESS VOLUNTEERS COMPLETED 35 WEEK-LONG VOLUNTEER PROJECTS IN 2025, ENGAGING 305 VOLUNTEERS FOR A TOTAL OF 8517 VOLUNTEER HOURS. PROJECTS WERE COORDINATED WITH PUBLIC LAND MANAGEMENT AGENCIES, INCLUDING THE NATIONAL PARK SERVICE, U.S. FOREST SERVICE, AND BUREAU OF LAND MANAGEMENT, AND INCLUDED TRAIL MAINTENANCE, INVASIVE SPECIES REMOVAL, FENCING REMOVAL, NATIVE PLANT AND SEED PLANTING, AND MORE.

    Expenses $182,322

As filed on the 2025 return.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Ross Holloway

    PRESIDENT

    Total calculated
    $0
    Hours/week
    1.38

  • Rebecca Glucklich

    VICE PRESIDENT

    Total calculated
    $0
    Hours/week
    0.77

  • Lee Cooper

    TREASURER

    Total calculated
    $0
    Hours/week
    5

  • Katy Giorgio

    MEMBER

    Total calculated
    $0
    Hours/week
    0

  • Linda Altenhofen

    MEMBER

    Total calculated
    $0
    Hours/week
    0.38

  • Mike Bork

    MEMBER

    Total calculated
    $0
    Hours/week
    1.44

  • Jb Ricca

    MEMBER

    Total calculated
    $0
    Hours/week
    0.31

  • Mark Young

    SECRETARY

    Total calculated
    $0
    Hours/week
    1.58

  • Tony Zimmer

    MEMBER

    Total calculated
    $0
    Hours/week
    0.26

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

  • 2025
    Revenue
    $282,787
    Expenses
    $282,680
    Contributions
    $199,891
    Grants paid
    $0
  • 2024
    Revenue
    $269,117
    Expenses
    $257,297
    Contributions
    $152,753
    Grants paid
    $0
  • 2023
    Revenue
    $243,351
    Expenses
    $236,532
    Contributions
    $120,161
    Grants paid
    $0
  • 2022
    Revenue
    $185,016
    Expenses
    $210,249
    Contributions
    $110,430
    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
    $204,835
    Expenses
    $190,109
    Assets (EOY)
    $363,018

  • 2020 · 990

    Revenue
    $217,954
    Expenses
    $151,213
    Assets (EOY)
    $335,092

  • 2018 · 990

    Revenue
    $173,672
    Expenses
    $201,980
    Assets (EOY)
    $280,127

  • 2018 · 990

    Revenue
    $173,672
    Expenses
    $201,980
    Assets (EOY)
    $280,127

  • 2017 · 990

    Revenue
    $174,180
    Expenses
    $204,212
    Assets (EOY)
    $352,962

  • 2016 · 990

    Revenue
    $192,252
    Expenses
    $195,598
    Assets (EOY)
    $358,169

  • 2015 · 990

    Revenue
    $197,092
    Expenses
    $190,807
    Assets (EOY)
    $368,059

  • 2014 · 990

    Revenue
    $260,399
    Expenses
    $201,126
    Assets (EOY)
    $372,842

  • 2013 · 990

    Revenue
    $223,976
    Expenses
    $230,039
    Assets (EOY)
    $323,296

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.

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

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 2025, the newest we have parsed for this organization.