diff --git a/Grasshopper/SAM.Analytical.Grasshopper.Systems/Component/SAMAnalyticalSystemResults.cs b/Grasshopper/SAM.Analytical.Grasshopper.Systems/Component/SAMAnalyticalSystemResults.cs
index bb0fc18..2502130 100644
--- a/Grasshopper/SAM.Analytical.Grasshopper.Systems/Component/SAMAnalyticalSystemResults.cs
+++ b/Grasshopper/SAM.Analytical.Grasshopper.Systems/Component/SAMAnalyticalSystemResults.cs
@@ -306,7 +306,7 @@ void IGH_VariableParameterComponent.VariableParameterMaintenance() { }
 
         public virtual void OnSourceCodeClick(object sender = null, object e = null)
         {
-            Process.Start("https://github.com/HoareLea/SAM");
+            Process.Start("https://github.com/SAM-BIM/SAM");
         }
 
         public string ComponentVersion
diff --git a/docs/SAM-BIM-RuntimeUrls-Q4.md b/docs/SAM-BIM-RuntimeUrls-Q4.md
new file mode 100644
index 0000000..e701746
--- /dev/null
+++ b/docs/SAM-BIM-RuntimeUrls-Q4.md
@@ -0,0 +1,44 @@
+# SAM-BIM runtime URLs (Q4) - SAM_Systems
+
+PR: SAM-BIM/SAM_Systems#38. Branch `fix/sam-bim-runtime-urls-q4` -> base `sow/2026-Q4` (Q4 base `edc8d0d`). Record date: 2026-10-06.
+
+## Current status
+
+PR open, **not merged**. Source-only, minimum change: the "source code" menu action of one Grasshopper component opened
+the HoareLea repository and now opens SAM-BIM/SAM. No `.gitmodules`, gitlink, workflow, `master`, `sow/2026-Q3` or icon-redesign change.
+
+## Work completed
+
+| File | Old HoareLea destination | New SAM-BIM destination |
+|---|---|---|
+| `Grasshopper/SAM.Analytical.Grasshopper.Systems/Component/SAMAnalyticalSystemResults.cs` (`OnSourceCodeClick`) | `https://github.com/HoareLea/SAM` | `https://github.com/SAM-BIM/SAM` |
+
+## Why the change is required
+
+SAM-BIM is now the authoritative development ecosystem and HoareLea is no longer the synchronised operational source, so
+the component's "source code" action should open the maintained repository. It matches the shared `OnSourceCodeClick` in SAM
+(`SAMCoreInspect`, `SAMCoreFilterByType`) and SAM's `AppendSourceCodeAdditionalMenuItem`, which already uses `github.com/SAM-BIM`.
+
+## Decisions and assumptions
+
+- `Kernel/AssemblyInfo.cs` author/contact strings are provenance metadata and are unchanged (owner decision: KEEP).
+- This file already carries the SPDX header, so no header change was needed.
+
+## Files changed
+
+`SAMAnalyticalSystemResults.cs` (1 line) and this record.
+
+## Validation
+
+- `git diff --check` clean; diff reviewed.
+- `msbuild SAM_Systems.sln -p:Configuration=Release` with `APPDATA`/`USERPROFILE` redirected: 0 errors;
+  `SAM.Analytical.Grasshopper.Systems.gha` contains `https://github.com/SAM-BIM/SAM` and no `https://github.com/HoareLea/SAM`.
+- `SAM.Analytical.Systems.Tests` were not run locally; the change touches no code path they cover. PR CI (`build`, `spdx`) green; see the PR.
+
+## Unresolved issues, risks
+
+- None introduced by this change.
+
+## Exact next step
+
+Merge into `sow/2026-Q4` after green CI (maintainer-approved). After merge, the `PROJECT_PROGRESS.md` closeout is a direct docs commit on `sow/2026-Q4` (never on this branch).