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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 81-4078349

WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION

Tax-exempt · TRENTON, MI 48183

Address and contacts

Address (IRS master file)
2691 VETERANS PKWY, TRENTON, MI 48183-2626
Mailing address (990-N for 2024)
2691 Veterans Parkway, Trenton MI 48183
Principal officer (990-N for 2024)
Stephanie N Korneffel, 2691 Veterans Parkway, Trenton MI 48183

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. 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 16, 2027Not due yet
2024September 30, 2025February 17, 2026990-N on file
2023September 30, 2024February 18, 2025990-N on file

File the 2025 990-N for WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION

Due February 16, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
81-4078349
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
2018
Accounting year ends
September
Files
Form 990-N (e-Postcard)
Category (NTEE)
Health care (E12)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2024
Officer: Stephanie N Korneffel
September 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Stephanie N Korneffel
September 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Stephanie N Korneffel
September 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Stephanie N Korneffel
September 30, 2022≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 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 (search EIN 81-4078349).

Questions about WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION

What is the EIN of WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION?
The employer identification number (EIN) of WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION is 81-4078349.
Is WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2018.
Are donations to WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-N for 2024 for the year ended September 30, 2025.
Who is the principal officer of WARREN E KORNEFFEL NEONATAL RESEARCH FOUNDATION?
The 990-N for 2024 names Stephanie N Korneffel.

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