diff --git a/src/cli/run.rs b/src/cli/run.rs
index 74a76f6..f757733 100644
--- a/src/cli/run.rs
+++ b/src/cli/run.rs
@@ -5,6 +5,7 @@ use crate::automation::{
 };
 use crate::config::{GlobalConfig, TuttiConfig};
 use crate::error::{Result, TuttiError};
+use crate::state::{load_sdlc_run_ledger, sdlc_pr_comment_summary};
 use crate::{budget, budget::BudgetGuardOutcome};
 use comfy_table::{Table, presets::UTF8_BORDERS_ONLY};
 use serde::Serialize;
@@ -89,6 +90,21 @@ pub fn run(
         if !plan.is_empty() {
             print_resume_plan(&ctx.run_id, &plan);
         }
+        match load_sdlc_run_ledger(project_root, &ctx.run_id) {
+            Ok(Some(ledger)) => match sdlc_pr_comment_summary(&ledger) {
+                Ok(summary) => eprintln!("{summary}"),
+                Err(err) => {
+                    eprintln!("warn: failed to format SDLC run ledger summary: {err}");
+                }
+            },
+            Ok(None) => {}
+            Err(err) => {
+                eprintln!(
+                    "warn: failed to load SDLC run ledger for '{}': {err}",
+                    ctx.run_id
+                );
+            }
+        }
     }
 
     if dry_run {
diff --git a/src/state/mod.rs b/src/state/mod.rs
index 0cf5e1e..9e70f18 100644
--- a/src/state/mod.rs
+++ b/src/state/mod.rs
@@ -179,6 +179,7 @@ fn with_run_ledger_lock<T>(project_root: &Path, op: impl FnOnce() -> Result<T>)
     op()
 }
 
+/// A single state transition recorded for an SDLC run.
 #[allow(dead_code)]
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SdlcTransitionRecord {
@@ -190,6 +191,7 @@ pub struct SdlcTransitionRecord {
     pub reason: Option<String>,
 }
 
+/// Persisted state for an SDLC-tracked run, including transition history.
 #[allow(dead_code)]
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SdlcRunLedgerRecord {
@@ -204,6 +206,43 @@ pub struct SdlcRunLedgerRecord {
     pub transitions: Vec<SdlcTransitionRecord>,
 }
 
+/// Render a reusable PR comment summary for the provided SDLC run ledger.
+///
+/// The output includes the current run state and a chronological transition list
+/// suitable for posting in PR status updates.
+pub fn sdlc_pr_comment_summary(ledger: &SdlcRunLedgerRecord) -> Result<String> {
+    let mut out = String::new();
+    out.push_str(&format!(
+        "SDLC run `{}` for #{} is currently `{:?}` (updated {} by {}).\n",
+        ledger.run_id,
+        ledger.issue_number,
+        ledger.state,
+        ledger.updated_at.to_rfc3339(),
+        ledger.actor
+    ));
+    if ledger.transitions.is_empty() {
+        out.push_str("No transitions recorded yet.");
+        return Ok(out);
+    }
+
+    out.push_str("\nTransitions:\n");
+    for transition in &ledger.transitions {
+        out.push_str(&format!(
+            "- {:?} → {:?} @ {} by {}{}\n",
+            transition.from,
+            transition.to,
+            transition.timestamp.to_rfc3339(),
+            transition.actor,
+            transition
+                .reason
+                .as_ref()
+                .map(|r| format!(" ({r})"))
+                .unwrap_or_default()
+        ));
+    }
+    Ok(out.trim_end().to_string())
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 #[serde(rename_all = "snake_case")]
 pub enum ActivityState {
@@ -1191,4 +1230,30 @@ mod tests {
         let bad = validate_step_id("step*1").unwrap_err();
         assert!(bad.to_string().contains("only [A-Za-z0-9_-] allowed"));
     }
+
+    #[test]
+    fn sdlc_pr_comment_summary_renders_transitions() {
+        let now = Utc::now();
+        let ledger = SdlcRunLedgerRecord {
+            run_id: "run-ledger-summary".to_string(),
+            issue_number: 30,
+            repository: "nutthouse/tutti".to_string(),
+            workflow_name: "readiness".to_string(),
+            state: SdlcRunState::Tested,
+            updated_at: now,
+            actor: "wren".to_string(),
+            transitions: vec![SdlcTransitionRecord {
+                from: SdlcRunState::Implemented,
+                to: SdlcRunState::Tested,
+                timestamp: now,
+                actor: "wren".to_string(),
+                reason: Some("tests passed".to_string()),
+            }],
+        };
+
+        let summary = sdlc_pr_comment_summary(&ledger).unwrap();
+        assert!(summary.contains("run-ledger-summary"));
+        assert!(summary.contains("Transitions:"));
+        assert!(summary.contains("tests passed"));
+    }
 }