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350 COLORADO

EIN 46-3355370 BOULDER, CO

Browse the largest nonprofits in Colorado

Revenue 2024
$481,790
Expenses 2024
$709,696

Program services were 80.7% 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
2861 ELLISON PL

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

1 other organization in the IRS Business Master File lists the same street address. matched by us

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 · 2024

Mission

TO WORK LOCALLY TO HELP BUILD A GLOBAL GRASSROOTS MOVEMENT TO SOLVE THE CLIMATE CRISIS AND TRANSITION TO A SUSTAINABLE FUTURE.

  • OUR GOAL IS TO EDUCATE AND ENGAGE VOLUNTEERS AROUND CLIMATE LEADERSHIP THROUGH TRAINING AND ACTIVISM.

    Expenses $572,896 · Grants $121,300

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.

  • Micah Parkin

    EXECUTIVE DI

    Total calculated
    $76,596
    From this org
    $70,199
    From related orgs
    $0
    Other
    $6,397
    Hours/week
    40

  • Amy Allen

    CHAIR

    Total calculated
    $0
    Hours/week
    3

  • Katessia Robertson

    VICE CHAIR

    Total calculated
    $0
    Hours/week
    3

  • Heron Lenz

    SECRETARY

    Total calculated
    $0
    Hours/week
    3

  • Paul Culnan

    TREASURER

    Total calculated
    $0
    Hours/week
    3

  • Patricia Garcia Nelson

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    3

  • Chris Herr

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    3

  • Gail Nordheim

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    3

  • Irina Sedova

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    3

  • Daniel Price

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    3

  • Phoebe Dominguez

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    3

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
    $481,790
    Expenses
    $709,696
    Contributions
    $475,055
    Grants paid
    $121,300
  • 2023
    Revenue
    $912,389
    Expenses
    $817,346
    Contributions
    $907,678
    Grants paid
    $150,150
  • 2022
    Revenue
    $619,202
    Expenses
    $551,394
    Contributions
    $615,949
    Grants paid
    $4,500

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
    $510,819
    Expenses
    $464,917
    Assets (EOY)
    $414,667

  • 2020 · 990

    Revenue
    $494,784
    Expenses
    $275,015
    Assets (EOY)
    $369,604

  • 2019 · 990

    Revenue
    $265,317
    Expenses
    $216,107
    Assets (EOY)
    $146,022

  • 2018 · 990-EZ

    Revenue
    $173,413
    Expenses
    $139,634
    Assets (EOY)
    $96,812

  • 2017 · 990-EZ

    Revenue
    $128,065
    Expenses
    $118,626
    Assets (EOY)
    $63,033

  • 2016 · 990-EZ

    Revenue
    $155,138
    Expenses
    $118,549
    Assets (EOY)
    $53,594

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 2015

Tax period
1 January 2015 to 31 December 2015
Principal officer
Micah Parkin
Mailing address
2861 Ellison PlaceBoulder CO 80304
Website
www.350colorado.org

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

The 10 largest by cash amount. The API serves every itemized grant.

Where these grants went next →

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

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.