Open Information Security Foundation

General

Used as filename or fragment reference: oisf
Common Name: Open Information Security Foundation
Legal Name: Open Information Security Foundation
Description: Building community and supporting open source security technologies like Suricata.
Contact Us: https://oisf.net/contact/
Website: https://oisf.net/
Location: US
State: IN

Governance

Board Size: 5
Board Website: https://oisf.net/team/
Team, staff, or employee roster URL.: https://oisf.net/team/
Example Projects Hosted: Suricata
Nonprofit Type: Nonprofit501c3

Funding

Tax Authority ID: 26-3316567

Tax Filings - US

IRS determination date: 2010-09-01
NTEE Code: U41
Most recent filing: 2025-12-01, assets $2.1M

Revenue and expenses reported on IRS Form 990 filings, via ProPublica Nonprofit Explorer (data) or IRS downloads.
Tax year	Revenue	Expenses
2023	$1.52M	$1.36M
2022	$1.52M	$1.26M
2021	$1.32M	$1.27M
2020	$1.15M	$948.8K
2019	$1.42M	$1.03M
2018	$814.7K	$718.4K
2017	$635.2K	$557.9K
2016	$630.4K	$521.6K
2015	$621.3K	$448.6K
2014	$91.8K	$90.1K
2013	$214.2K	$253.6K
2012	$260K	$270.7K

Sponsorships

Sponsor List Website: https://oisf.net/memberships/
Example Sponsors: https://oisf.net/consortium/

Policy

Licenses Used: GPL
Code Of Conduct Website: https://oisf.net/about-us/