diff --git a/phase-ends/CURRENT_PHASE.md b/phase-ends/CURRENT_PHASE.md
index bac5e8c..7dfd754 100644
--- a/phase-ends/CURRENT_PHASE.md
+++ b/phase-ends/CURRENT_PHASE.md
@@ -632,3 +632,16 @@ makes the team structure work.
 - B's 0x800B5CB4 attempt (64 vs 68, duplicate store absent with the
   compound `g = --g` form) confirms C's registered spelling must use a
   construct that stores twice (the F11 volatile lever).
+
+## Cycle 4 — primitive-init family exclusion (family conclusion)
+
+- Worker B's 0-for-3 batch produced the exclusion conclusion: 0x80012CFC
+  (54 bytes, worst residual of the cycle) is the FOURTH failure against TWO
+  successes in the primitive-init family, confirming C's scheduler-bound
+  diagnosis. 0x80012CFC/0x80012B20 added to the Makefile exclusions
+  (excluded_named_exclusion=8) joining 0x80012A10/0x80012AE0. Toolchain
+  limit, not a source problem — no further attempts on the family.
+- Recorded: sltiu signedness tell (3rd confirmation), single-exit-tail
+  lever for extra-j, prune-rule-working-as-designed (0x8006F95C gp rows
+  pruned because unclaimed).
+- Registry: 391 / 382. All gates green; SHA-1 stable.