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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 27-0917237

LITTLEST TUMOR FOUNDATION

Tax-exempt · APPLETON, WI 54912

Financials

$188K$172K2023$187K$148K2024
Revenue Expenses · by fiscal year end
Financials of LITTLEST TUMOR FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
September 30, 2025990-EZ$187,192$148,349$38,843$164,473$12,233$152,240
September 30, 2024990-EZ$188,257$171,928$16,329$121,265$7,868$113,397
Financial details: 990-EZ for the year ended September 30, 2025

Revenue

Contributions, gifts and grants
$187,192

Expenses

Compensation of officers, directors and key employees
$47,400
Salaries, compensation and benefits (total)
$51,425
Professional fees and payments to contractors
$27,389
Occupancy
$2,454
Printing, publications and postage
$16
Other expenses
$67,065
Program services (functional)
$115,107

Balance sheet and other

Total assets, start of year
$121,265
Total assets, end of year
$164,473
Total liabilities, end of year
$12,233
Net assets, end of year
$152,240
Cash, savings and investments
$162,704
Gross receipts
$187,192

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-EZ for the year ended September 30, 2025, highest compensation first.

NameTitleHours / weekCompensation
TRACY WIRTANENTREASURER & EXEC DIRECTOR40$47,400
STEVE MYERSPRESIDENT0.25$0
BRENT DEBENEDETSECRETARY0.25$0
990-EZ for the year ended September 30, 2024: 3 people
NameTitleHours / weekCompensation
TRACY WIRTANENTREASURER & EXEC DIRECTOR40$52,732
STEVE MYERSPRESIDENT0.25$0
BRENT DEBENEDETSECRETARY0.25$0

Address and contacts

Address (IRS master file)
PO BOX 7051, APPLETON, WI 54912-7051
In care of
% TRACY WIRTANEN
Mailing address (990-N for 2009)
PO Box 7051, Appleton WI 54912
Principal officer (990-N for 2009)
Tracy Wirtanen, 15 Cherry Court, Appleton WI 54915
Signed the 990-EZ
TRACY WIRTANEN, TREASURER
Phone
(920) 475-6599
Return prepared by
CLIFTONLARSONALLEN LLP

Mission

INCREASE UNDERSTANDING OF NEUROFIBROMATOSIS (NF), EMPOWER AFFECTED FAMILIES, ADVANCE RESEARCH OF PREVENTATIVE THERAPIES.

990-EZ for the year ended September 30, 2025

Program accomplishments

  • LED ANNUAL FAMILY WELLNESS RETREATS FOR THE ENTIRE FAMILY FOR FIVE DAYS IN WISCONSIN THAT FOCUSED ON EDUCATION, HEALTHY LIFESTYLE AND EMPOWERING THE FAMILY UNIT. HELD A FIVE DAY YOUNG ADULT LEADERSHIP PROGRAM.HELD A FOUR DAY NF YOUNG ADULT MENTORSHIP PROGRAM.HAD VIRTUAL AND AN IN-PERSON MEETINGS WITH THE NF COLLECTIVE GROUP.HELD SUPPORT GROUPS FOR PARENTS AND CAREGIVERS WITH NF.
    Expenses $115,107

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 September, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025September 30, 2026February 15, 2027Not due yet
2024September 30, 2025February 16, 2026990-EZ on file
2023September 30, 2024February 17, 2025990-EZ on file

File the 2025 990-EZ for LITTLEST TUMOR FOUNDATION

Due February 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
27-0917237
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
2010
Accounting year ends
September
Files
Form 990 or 990-EZ
Assets (IRS master file)
$164,473
Income (IRS master file)
$187,192

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZSeptember 2025–––IRS
990-EZSeptember 2024–––IRS
990-EZSeptember 2023$126,661$151,976$101,524IRS
990-EZSeptember 2022–––IRS
990-EZSeptember 2021–––IRS
990-EZSeptember 2020–––IRS
990-EZSeptember 2019–––IRS
990-EZSeptember 2018–––IRS
990-N for 2009
Officer: Tracy Wirtanen
September 30, 2010≤ $50,000 receipts––e-Postcard

990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 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.

Questions about LITTLEST TUMOR FOUNDATION

What is the EIN of LITTLEST TUMOR FOUNDATION?
The employer identification number (EIN) of LITTLEST TUMOR FOUNDATION is 27-0917237.
Is LITTLEST TUMOR FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2010.
Are donations to LITTLEST TUMOR FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does LITTLEST TUMOR FOUNDATION 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 LITTLEST TUMOR FOUNDATION due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did LITTLEST TUMOR FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended September 2025.
Who is the principal officer of LITTLEST TUMOR FOUNDATION?
The 990-N for 2009 names Tracy Wirtanen.
Who are the officers and directors of LITTLEST TUMOR FOUNDATION?
The 990-EZ for the year ended September 30, 2025 lists 3 people; 1 received compensation from the organization, the highest $47,400 (TRACY WIRTANEN, TREASURER & EXEC DIRECTOR).
How much revenue does LITTLEST TUMOR FOUNDATION have?
On its 990-EZ for the year ended September 30, 2025 it reported revenue of $187,192, expenses of $148,349 and total assets of $164,473 at year end.

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