diff --git a/README.md b/README.md
index 06f632c..65be6c9 100644
--- a/README.md
+++ b/README.md
@@ -6,3 +6,4 @@ This repository contains org-wide community health files for the [agentrust-io](
 - [`CODE_OF_CONDUCT.md`](CODE_OF_CONDUCT.md): applies to all repos in this org
 - [`CONTRIBUTING.md`](CONTRIBUTING.md): default contributing guide
 - [`SECURITY.md`](SECURITY.md): default security policy
+- [`SPONSORS.md`](SPONSORS.md): organization-wide sponsor recognition policy
diff --git a/SPONSORS.md b/SPONSORS.md
new file mode 100644
index 0000000..f32515a
--- /dev/null
+++ b/SPONSORS.md
@@ -0,0 +1,20 @@
+# Sponsors
+
+AgenTrust is an open ecosystem whose projects are governed through their
+published project processes. Sponsors provide funding, engineering time,
+infrastructure, or other in-kind support. Sponsorship does not confer project
+ownership, governance authority, or control over technical decisions.
+
+## Current sponsors
+
+### OPAQUE Systems
+
+Founding engineering and infrastructure sponsor, fellowship funder, and active
+contributor to the AgenTrust ecosystem.
+
+## Recognition policy
+
+Sponsor recognition records support for the ecosystem. Each repository's
+licence, charter, maintainer list, and governance process remain authoritative
+for legal and technical stewardship. Sponsorship is distinct from partnership,
+adoption, maintainership, and ownership.
diff --git a/profile/README.md b/profile/README.md
index 7e75f99..ba865c1 100644
--- a/profile/README.md
+++ b/profile/README.md
@@ -16,6 +16,13 @@ agentrust-io is the open trust layer built to close it: replacing "we have guard
 
 The specifications, SDKs, and conformance tests are free and open. Begin in software; advance to hardware-backed and post-quantum assurance as requirements demand.
 
+**OPAQUE Systems is a founding engineering and infrastructure sponsor and an
+active contributor.** Sponsorship supports the work but does not confer
+ownership of AgenTrust projects or governance authority over their technical
+decisions. Each repository's licence, charter, maintainer list, and published
+governance process define its legal and technical stewardship. See the
+[organization sponsor policy](https://github.com/agentrust-io/.github/blob/main/SPONSORS.md).
+
 [![License](https://img.shields.io/badge/License-Apache_2.0_%2F_MIT_%2F_CC_BY_4.0-blue.svg)](#projects)
 [![Linux Foundation](https://img.shields.io/badge/TRACE-Linux_Foundation_series_(in_formation)-6366f1)](https://www.linuxfoundation.org/)
 [![CC Summit](https://img.shields.io/badge/Launched-CC_Summit_Jun_2026-7c3aed)](https://confidentialcomputingsummit.com)