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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 57-1168065

NATIONAL SLEEP RESEARCH INSTITUTE

Tax-exempt · BOCA RATON, FL 33432

Address and contacts

Address (IRS master file)
400 SE 5TH AVE APT 706N, BOCA RATON, FL 33432-6088
In care of
% GARY GLADSTEIN
Mailing address (990-N for 2025)
400 SE 5TH AVE APT 706N, BOCA RATON FL 334326088
Principal officer (990-N for 2025)
Gary Gladstein, 400 SE 5th Ave 706N, Boca Raton FL 33432

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

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for NATIONAL SLEEP RESEARCH INSTITUTE

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
57-1168065
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
2004
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Medical research (H90)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Gary Gladstein
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Gary Gladstein
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Gary Gladstein
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Gary Gladstein
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Gary Gladstein
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Gary Gladstein
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Gary Gladstein
December 31, 2019≤ $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 57-1168065).

Questions about NATIONAL SLEEP RESEARCH INSTITUTE

What is the EIN of NATIONAL SLEEP RESEARCH INSTITUTE?
The employer identification number (EIN) of NATIONAL SLEEP RESEARCH INSTITUTE is 57-1168065.
Is NATIONAL SLEEP RESEARCH INSTITUTE tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2004.
Are donations to NATIONAL SLEEP RESEARCH INSTITUTE tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does NATIONAL SLEEP RESEARCH INSTITUTE file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of NATIONAL SLEEP RESEARCH INSTITUTE due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did NATIONAL SLEEP RESEARCH INSTITUTE last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of NATIONAL SLEEP RESEARCH INSTITUTE?
The 990-N for 2025 names Gary Gladstein.

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