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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 87-1354647

CURIOSITY RESEARCH FOUNDATION INC

Tax-exempt · CUPERTINO, CA 95014

Address and contacts

Address (IRS master file)
21561 REGNART RD, CUPERTINO, CA 95014-4818
Mailing address (990-N for 2025)
21561 REGNART ROAD, Cupertino CA 95014
Principal officer (990-N for 2025)
Lucy Noble, 21561 REGNART ROAD, Cupertino CA 95014

California records

California keeps its own records of charities and corporations. Search them by EIN 87-1354647 or by the name CURIOSITY RESEARCH FOUNDATION INC.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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, 2025Check at the IRS
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for CURIOSITY RESEARCH FOUNDATION INC

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

IRS record

EIN
87-1354647
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2022
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Education (B11)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Lucy Noble
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Isaac Noble
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Lucy Noble
December 31, 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 87-1354647).

Questions about CURIOSITY RESEARCH FOUNDATION INC

What is the EIN of CURIOSITY RESEARCH FOUNDATION INC?
The employer identification number (EIN) of CURIOSITY RESEARCH FOUNDATION INC is 87-1354647.
Is CURIOSITY RESEARCH FOUNDATION INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
Are donations to CURIOSITY RESEARCH FOUNDATION INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does CURIOSITY RESEARCH FOUNDATION INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of CURIOSITY RESEARCH FOUNDATION INC 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 CURIOSITY RESEARCH FOUNDATION INC 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 CURIOSITY RESEARCH FOUNDATION INC?
The 990-N for 2025 names Lucy Noble.

Other nonprofits in CUPERTINO

All nonprofits in CUPERTINO · California · Education