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OLIGO NATION

EIN 46-3087590 SEBASTOPOL, CA

Browse the largest nonprofits in California

Revenue 2024
$1,893,730
Expenses 2024
$1,441,227

Program services were 72.2% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
G99
Classification
1000
Street
1325 SCHAEFFER RD

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

OLIGO NATION ADVOCATES AND FUNDRAISES TO SUPPORT MEDICAL RESEARCH INTO OLIGODENDROGLIOMA BRAIN CANCER. WE ENGAGE WITH OTHERS IN THE OLIGODENDROGLIOMA COMMUNITY TO RAISE MONEY AND WE WORK WITH RESEARCHERS AND RESEARCH INSTITUTIONS TO IDENTIFY OPPORTUNITIES TO FUND TRANSLATIONAL RESEARCH THAT CAN POTENTIALLY LEAD TO NEW TREATMENTS IN THE NEXT 5 YEARS.

  • MEDICAL RESEARCH GRANTS

    Expenses $980,178 · Grants $974,523

  • MANAGING OLIGODENDROGLIOMA BIOBANK AND BUILDING CELL LINE REPOSITORY

    Expenses $60,145

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

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.

  • Ashley Dabbiere

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Jeff Fager

    BOARD CHAIR

    Total calculated
    $0
    Hours/week
    2

  • Braddock Greene

    CEO

    Total calculated
    $0
    Hours/week
    40

  • Spencer Greene

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Zachary Greene

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Warren Guthrie

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    1

  • Patrick Hanlon

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Jeff Hickling

    BOARD VICE C

    Total calculated
    $0
    Hours/week
    1

  • Jodi Kaye

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Alyse Mandel

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Christine Milloff

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Jim Perri

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Alexandra Popken

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Patrick Ronan

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Mike Towers

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

  • Katherine Utecht

    BOARD MEMBER

    Total calculated
    $0
    Hours/week
    0.5

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
    $1,893,730
    Expenses
    $1,441,227
    Contributions
    $2,019,501
    Grants paid
    $974,523
  • 2023
    Revenue
    $1,637,244
    Expenses
    $1,778,009
    Contributions
    $1,794,927
    Grants paid
    $1,211,500
  • 2022
    Revenue
    $978,352
    Expenses
    $319,078
    Contributions
    $612,395
    Grants paid
    $89,673

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
    $672,520
    Expenses
    $556,253
    Assets (EOY)
    $1,684,218

  • 2020 · 990

    Revenue
    $927,609
    Expenses
    $273,611
    Assets (EOY)
    $1,418,298

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 2013

Tax period
1 January 2013 to 31 December 2013
Principal officer
Braddock Greene
Mailing address
19 Morningside DriveSan Anselmo CA 94960
Website
www.oligonation.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.