210 Ridge McIntire Road
Suite 500
Charlottesville, VA 22903-5083
Email: contact@cos.io
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Responsible stewards of your support
COS has consistently earned a Guidestar rating of Platinum for its financial transparency, the highest rating available. You can see our profile on Guidestar. COS and the OSF were also awarded SOC2 accreditation in 2023 after an independent assessment of our security and procedures by the American Institute of CPA’s (AICPA).
We invite all of our sponsors, partners, and members of the community to learn more about how our organization operates, our impact, our financial performance, and our nonprofit status.
