Question 1

Is Open Information Security Foundation Inc a tax-exempt 501(c)(3)?

Accepted Answer

Yes — Open Information Security Foundation Inc is recognised by the IRS as a 501(c)(3) organisation (EIN 26-3316567). The IRS recognised Open Information Security Foundation Inc as tax-exempt in September 2010.

Question 2

What is Open Information Security Foundation Inc's EIN?

Accepted Answer

Open Information Security Foundation Inc's Employer Identification Number (EIN) is 26-3316567. The EIN was assigned by the IRS in September 2010. Donors and grantmakers use the EIN to verify tax-exempt status with the IRS.

Question 3

What does Open Information Security Foundation Inc do?

Accepted Answer

To build a next generational IDS/IPS engine which will remain free of use by any individual or organization. OISF will maintain and develop this software while providing training and support to its users.

Question 4

Where is Open Information Security Foundation Inc located?

Accepted Answer

Open Information Security Foundation Inc is located at 250 Main Street Suite 590, Lafayette, IN, 47901.

Question 5

When was Open Information Security Foundation Inc founded or recognised by the IRS?

Accepted Answer

Open Information Security Foundation Inc was recognised by the IRS as a tax-exempt organisation in September 2010. The IRS ruling date is the earliest authoritative date available for most US nonprofits.

Question 6

What is Open Information Security Foundation Inc's annual revenue?

Accepted Answer

On its most recent Form 990 (fiscal year 2025), Open Information Security Foundation Inc reported $2.1M in total revenue and $1.7M in total expenses.

Question 7

Has Open Information Security Foundation Inc been auto-revoked by the IRS?

Accepted Answer

No — Open Information Security Foundation Inc (EIN 26-3316567) does not appear on the IRS Auto-Revocation List. Givalgo Discover cross-references the IRS Auto-Revocation List on every profile load; if status changes, this page reflects it.

Question 8

Is Open Information Security Foundation Inc listed in IRS Publication 78?

Accepted Answer

Yes — Open Information Security Foundation Inc is listed in IRS Publication 78 as an organisation eligible to receive tax-deductible charitable contributions. Pub 78 status is the canonical IRS signal that donations to an org are deductible.

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Open Information Security Foundation Inc

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