diff --git a/packages/ui/src/components/session-list.tsx b/packages/ui/src/components/session-list.tsx
index 22ec22802..78d34ead4 100644
--- a/packages/ui/src/components/session-list.tsx
+++ b/packages/ui/src/components/session-list.tsx
@@ -72,6 +72,7 @@ const SessionList: Component<SessionListProps> = (props) => {
   const [filterQuery, setFilterQuery] = createSignal("")
   const [sortBy, setSortBy] = createSignal<SessionFamilySort>("activity")
   const [worktreeDirectory, setWorktreeDirectory] = createSignal("")
+  const [includeMainSessions, setIncludeMainSessions] = createSignal(true)
   const [includeSubsessions, setIncludeSubsessions] = createSignal(false)
   const normalizedQuery = createMemo(() => (props.enableFilterBar ? filterQuery().trim().toLowerCase() : ""))
   let failedSortExhaustion: string | undefined
@@ -241,6 +242,7 @@ const SessionList: Component<SessionListProps> = (props) => {
       sort: sortBy(),
       worktreeDirectory: worktreeDirectory(),
       includeSubsessions: includeSubsessions(),
+      includeMainSessions: includeMainSessions(),
       getWorktreeLabel,
       ...(query && !hasSearchResults
         ? { matchesSession: (session) => sessionMatchesQuery(session.id, query) }
@@ -877,15 +879,26 @@ const SessionList: Component<SessionListProps> = (props) => {
             </select>
           </div>
 
-          <label class="mt-2 flex items-center gap-2 text-xs text-secondary">
-            <input
-              type="checkbox"
-              role="switch"
-              checked={includeSubsessions()}
-              onChange={(event) => setIncludeSubsessions(event.currentTarget.checked)}
-            />
-            {t("sessionList.filter.includeSubsessions")}
-          </label>
+          <div class="mt-2 flex flex-wrap items-center gap-x-3 gap-y-2 text-xs text-secondary">
+            <label class="flex items-center gap-2">
+              <input
+                type="checkbox"
+                role="switch"
+                checked={includeMainSessions()}
+                onChange={(event) => setIncludeMainSessions(event.currentTarget.checked)}
+              />
+              {t("sessionList.filter.includeMainSessions")}
+            </label>
+            <label class="flex items-center gap-2">
+              <input
+                type="checkbox"
+                role="switch"
+                checked={includeSubsessions()}
+                onChange={(event) => setIncludeSubsessions(event.currentTarget.checked)}
+              />
+              {t("sessionList.filter.includeSubsessions")}
+            </label>
+          </div>
 
           <Show when={selectedCount() > 0}>
             <div class="mt-2 flex items-center justify-end gap-2">
diff --git a/packages/ui/src/lib/i18n/messages/de/session.ts b/packages/ui/src/lib/i18n/messages/de/session.ts
index f9257e0e1..6ef590446 100644
--- a/packages/ui/src/lib/i18n/messages/de/session.ts
+++ b/packages/ui/src/lib/i18n/messages/de/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "Hauptsitzungen anzeigen",
   "sessionList.filter.includeSubsessions": "Untersitzungen anzeigen",
   "session.pruning.maintenance_required": "Die Sitzung oder ihr Speicher ist beschäftigt. Warte, bis der aktuelle Vorgang abgeschlossen ist, und versuche die Bereinigung erneut.",
   "session.pruning.unavailable": "Das Bereinigungs-Plugin ist nicht verfügbar oder hat nicht geantwortet. Öffne CodeNomad erneut und versuche es noch einmal.",
diff --git a/packages/ui/src/lib/i18n/messages/en/session.ts b/packages/ui/src/lib/i18n/messages/en/session.ts
index 6120299e6..8205edb70 100644
--- a/packages/ui/src/lib/i18n/messages/en/session.ts
+++ b/packages/ui/src/lib/i18n/messages/en/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "Show main sessions",
   "sessionList.filter.includeSubsessions": "Show subsessions",
   "session.pruning.maintenance_required": "The session or its storage is busy. Wait for the current operation to finish, then retry cleanup.",
   "session.pruning.unavailable": "The cleanup plugin is unavailable or did not respond. Reopen CodeNomad and retry.",
diff --git a/packages/ui/src/lib/i18n/messages/es/session.ts b/packages/ui/src/lib/i18n/messages/es/session.ts
index 3efc7bb81..2d48fd312 100644
--- a/packages/ui/src/lib/i18n/messages/es/session.ts
+++ b/packages/ui/src/lib/i18n/messages/es/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "Mostrar sesiones principales",
   "sessionList.filter.includeSubsessions": "Mostrar subsesiones",
   "session.pruning.maintenance_required": "La sesión o su almacenamiento está ocupado. Espera a que termine la operación actual y vuelve a intentar la limpieza.",
   "session.pruning.unavailable": "El complemento de limpieza no está disponible o no respondió. Vuelve a abrir CodeNomad e inténtalo de nuevo.",
diff --git a/packages/ui/src/lib/i18n/messages/fr/session.ts b/packages/ui/src/lib/i18n/messages/fr/session.ts
index e07e0a69e..7035b1d62 100644
--- a/packages/ui/src/lib/i18n/messages/fr/session.ts
+++ b/packages/ui/src/lib/i18n/messages/fr/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "Afficher les sessions principales",
   "sessionList.filter.includeSubsessions": "Afficher les sous-sessions",
   "session.pruning.maintenance_required": "La session ou son stockage est occupé. Attendez la fin de l’opération en cours, puis réessayez le nettoyage.",
   "session.pruning.unavailable": "Le plugin de nettoyage est indisponible ou n’a pas répondu. Rouvrez CodeNomad puis réessayez.",
diff --git a/packages/ui/src/lib/i18n/messages/he/session.ts b/packages/ui/src/lib/i18n/messages/he/session.ts
index 800b9e0b8..66e4a72b2 100644
--- a/packages/ui/src/lib/i18n/messages/he/session.ts
+++ b/packages/ui/src/lib/i18n/messages/he/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "הצגת סשנים ראשיים",
   "sessionList.filter.includeSubsessions": "הצגת תת־סשנים",
   "session.pruning.maintenance_required": "הסשן או האחסון שלו עסוקים. יש להמתין לסיום הפעולה הנוכחית ולנסות לנקות שוב.",
   "session.pruning.unavailable": "תוסף הניקוי אינו זמין או שלא הגיב. יש לפתוח את CodeNomad מחדש ולנסות שוב.",
diff --git a/packages/ui/src/lib/i18n/messages/ja/session.ts b/packages/ui/src/lib/i18n/messages/ja/session.ts
index 4ef411048..16ba91e68 100644
--- a/packages/ui/src/lib/i18n/messages/ja/session.ts
+++ b/packages/ui/src/lib/i18n/messages/ja/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "メインセッションを表示",
   "sessionList.filter.includeSubsessions": "サブセッションを表示",
   "session.pruning.maintenance_required": "セッションまたはストレージが使用中です。現在の処理が完了してから、クリーンアップを再試行してください。",
   "session.pruning.unavailable": "クリーンアッププラグインが利用できないか、応答しませんでした。CodeNomadを開き直して再試行してください。",
diff --git a/packages/ui/src/lib/i18n/messages/ne/session.ts b/packages/ui/src/lib/i18n/messages/ne/session.ts
index 124ee97bc..e06fceca9 100644
--- a/packages/ui/src/lib/i18n/messages/ne/session.ts
+++ b/packages/ui/src/lib/i18n/messages/ne/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "मुख्य सत्रहरू देखाउनुहोस्",
   "sessionList.filter.includeSubsessions": "उप-सत्रहरू देखाउनुहोस्",
   "session.pruning.maintenance_required": "सत्र वा यसको भण्डारण व्यस्त छ। हालको कार्य सकिएपछि सफाइ फेरि प्रयास गर्नुहोस्।",
   "session.pruning.unavailable": "सफाइ प्लगइन उपलब्ध छैन वा प्रतिक्रिया दिएन। CodeNomad फेरि खोलेर प्रयास गर्नुहोस्।",
diff --git a/packages/ui/src/lib/i18n/messages/ru/session.ts b/packages/ui/src/lib/i18n/messages/ru/session.ts
index f7258f708..951534c43 100644
--- a/packages/ui/src/lib/i18n/messages/ru/session.ts
+++ b/packages/ui/src/lib/i18n/messages/ru/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "Показывать основные сессии",
   "sessionList.filter.includeSubsessions": "Показывать подсессии",
   "session.pruning.maintenance_required": "Сессия или её хранилище заняты. Дождитесь завершения текущей операции и повторите очистку.",
   "session.pruning.unavailable": "Плагин очистки недоступен или не ответил. Откройте CodeNomad заново и повторите попытку.",
diff --git a/packages/ui/src/lib/i18n/messages/tr/session.ts b/packages/ui/src/lib/i18n/messages/tr/session.ts
index f33b9d3f5..efa3b0599 100644
--- a/packages/ui/src/lib/i18n/messages/tr/session.ts
+++ b/packages/ui/src/lib/i18n/messages/tr/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "Ana oturumları göster",
   "sessionList.filter.includeSubsessions": "Alt oturumları göster",
   "session.pruning.maintenance_required": "Oturum veya depolama alanı meşgul. Geçerli işlem bitince temizlemeyi yeniden deneyin.",
   "session.pruning.unavailable": "Temizleme eklentisi kullanılamıyor veya yanıt vermedi. CodeNomad'i yeniden açıp tekrar deneyin.",
diff --git a/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts b/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts
index ee7422ba9..306edda3e 100644
--- a/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts
+++ b/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts
@@ -1,4 +1,5 @@
 export const sessionMessages = {
+  "sessionList.filter.includeMainSessions": "显示主会话",
   "sessionList.filter.includeSubsessions": "显示子会话",
   "session.pruning.maintenance_required": "会话或其存储正忙。请等待当前操作完成后重试清理。",
   "session.pruning.unavailable": "清理插件不可用或未响应。请重新打开 CodeNomad 后重试。",
diff --git a/packages/ui/src/stores/session-tree.test.ts b/packages/ui/src/stores/session-tree.test.ts
index ca39e208d..ca20cad9e 100644
--- a/packages/ui/src/stores/session-tree.test.ts
+++ b/packages/ui/src/stores/session-tree.test.ts
@@ -220,7 +220,7 @@ describe("session tree", () => {
     const grandchild = sessions.get("grandchild")!
     const project = (worktreeDirectory: string, includeSubsessions = true) => projectSessionSearchResults(
       sessions.values(),
-      { sort: "activity", worktreeDirectory, includeSubsessions, getWorktreeLabel: directory => directory },
+      { sort: "activity", worktreeDirectory, includeMainSessions: true, includeSubsessions, getWorktreeLabel: directory => directory },
     )
     assert.deepEqual(project("D:\\repo").map(thread => thread.session.id), ["local-root", "grandchild", "child"])
     assert.deepEqual(collectSessionThreadIds(project("D:\\repo", false)), ["local-root"])
@@ -238,14 +238,14 @@ describe("session tree", () => {
     grandchild.status = "idle"
     assert.equal(project("D:\\repo").length, 3)
     const match = projectSessionSearchResults([grandchild], {
-      sort: "name", worktreeDirectory: "D:\\repo", includeSubsessions: true,
+      sort: "name", worktreeDirectory: "D:\\repo", includeMainSessions: true, includeSubsessions: true,
       matchesSession: item => item.id === "grandchild", getWorktreeLabel: directory => directory,
     })
     assert.deepEqual(collectSessionThreadIds(match), ["grandchild"], "a result renders even without its parents loaded")
     assert.equal(match[0].depth, 0)
     assert.equal(match[0].hasChildren, false)
     assert.equal(projectSessionSearchResults([grandchild], {
-      sort: "worktree", worktreeDirectory: parent.location.directory, includeSubsessions: true,
+      sort: "worktree", worktreeDirectory: parent.location.directory, includeMainSessions: true, includeSubsessions: true,
       matchesSession: item => item.id === "grandchild", getWorktreeLabel: directory => directory,
     }).length, 0, "text and directory must match the same session")
   })
diff --git a/packages/ui/src/stores/session-tree.ts b/packages/ui/src/stores/session-tree.ts
index 2550543c1..f31d2a72a 100644
--- a/packages/ui/src/stores/session-tree.ts
+++ b/packages/ui/src/stores/session-tree.ts
@@ -59,11 +59,12 @@ export function projectSessionFamilies(
 // the session itself, without adding ancestors or inheriting descendant activity.
 export function projectSessionSearchResults(
   sessions: Iterable<Session>,
-  options: SessionFamilyProjection & { includeSubsessions: boolean },
+  options: SessionFamilyProjection & { includeMainSessions: boolean; includeSubsessions: boolean },
 ): SessionThread[] {
   const rows = new Map<string, SessionThread>()
   for (const session of sessions) {
     if (session.parentId && !options.includeSubsessions) continue
+    if (!session.parentId && !options.includeMainSessions) continue
     rows.set(session.id, { session, children: [], depth: 0, hasChildren: false, latestUpdated: session.time.updated })
   }
   return projectSessionFamilies([...rows.values()], options)
diff --git a/packages/ui/tests/browser/session-search.test.ts b/packages/ui/tests/browser/session-search.test.ts
index 108c57d1a..4001c8ba7 100644
--- a/packages/ui/tests/browser/session-search.test.ts
+++ b/packages/ui/tests/browser/session-search.test.ts
@@ -32,9 +32,17 @@ test("search is flat, filters each session, selects only matches and restores th
     await page.goto(url)
     await page.waitForFunction(() => Boolean((window as any).fixture))
     const toggle = page.getByRole("switch", { name: "Show subsessions" })
+    const mainToggle = page.getByRole("switch", { name: "Show main sessions" })
     await page.locator('.session-item-base[data-session-id="parent"]').waitFor()
     assert.deepEqual(await rows(), ["local", "parent"])
+    assert.equal(await mainToggle.isChecked(), true)
+    assert.equal(await page.getByRole("switch").first().evaluate(el => el.closest("label")?.textContent?.trim()), "Show main sessions")
+    await mainToggle.uncheck()
+    assert.deepEqual(await rows(), [])
     await toggle.check()
+    await page.locator('[data-session-id="child"]').waitFor()
+    assert.deepEqual(await rows(), ["child", "grandchild"])
+    await mainToggle.check()
     assert.deepEqual(await rows(), ["child", "grandchild", "local", "parent"])
     assert.equal(await page.locator(".session-item-nested").count(), 0)
     assert.equal(await page.locator(".session-item-expander[aria-expanded]").count(), 0)
@@ -68,6 +76,7 @@ test("search is flat, filters each session, selects only matches and restores th
     await page.locator('[data-session-id="orphan"]').waitFor()
     assert.deepEqual(await rows(), ["orphan"], "server result without its parent is independently renderable")
     assert.equal(await page.evaluate(() => (window as any).fixture.parentReads()), 0)
+    await mainToggle.uncheck()
     await page.evaluate(() => (window as any).fixture.setSearchMode(false))
     await page.locator('[data-session-id="parent"]').waitFor()
     assert.equal(await page.getByRole("switch").count(), 0)