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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 82-4506840

SIGNAL TECHNOLOGY FOUNDATION

Also known as SIGNAL FOUNDATION

Tax-exempt · MOUNTAIN VIEW, CA 94041

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 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, 2026Not on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

File the 2025 990-EZ for SIGNAL TECHNOLOGY FOUNDATION

Due May 15, 2026 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
82-4506840
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
2019
Accounting year ends
December
Files
Form 990 or 990-EZ

Filing history

FormYear endedRevenueExpensesAssets
990December 2024–––
990TDecember 2024–––
990December 2023$35,750,994$35,808,494$37,433,223
990TDecember 2023–––
990December 2022$26,064,219$30,455,421$37,331,314
990TDecember 2022–––
990December 2021–––
990TDecember 2021–––
990December 2020–––
990TDecember 2020–––
990December 2018–––

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: e-filed returns processed since 2019; amounts from the IRS Statistics of Income extracts where available.

Other organizations in MOUNTAIN VIEW