diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc90b279..d1d9629e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -78,6 +78,8 @@
   **must** now be written as either `Control+C` or `Control+Shift+c`,
   the latter being the preferred
   variant. (https://codeberg.org/dnkl/foot/issues/376)
+* Consumed modifiers are no longer sent to the client application
+  (https://codeberg.org/dnkl/foot/issues/376).
 * The minimum version requirement for the libxkbcommon dependency is
   now 1.0.0.
 
diff --git a/input.c b/input.c
index 98abac9c..bc28bbf2 100644
--- a/input.c
+++ b/input.c
@@ -770,8 +770,8 @@ keymap_data_for_sym(xkb_keysym_t sym, size_t *count)
     switch (sym) {
     case XKB_KEY_Escape:       *count = ALEN(key_escape);       return key_escape;
     case XKB_KEY_Return:       *count = ALEN(key_return);       return key_return;
-    case XKB_KEY_Tab:          /* FALLTHROUGH */
-    case XKB_KEY_ISO_Left_Tab: *count = ALEN(key_tab);          return key_tab;
+    case XKB_KEY_ISO_Left_Tab: *count = ALEN(key_iso_left_tab); return key_iso_left_tab;
+    case XKB_KEY_Tab:          *count = ALEN(key_tab);          return key_tab;
     case XKB_KEY_BackSpace:    *count = ALEN(key_backspace);    return key_backspace;
     case XKB_KEY_Up:           *count = ALEN(key_up);           return key_up;
     case XKB_KEY_Down:         *count = ALEN(key_down);         return key_down;
@@ -1026,10 +1026,10 @@ key_press_release(struct seat *seat, struct terminal *term, uint32_t serial,
      */
 
     enum modifier keymap_mods = MOD_NONE;
-    keymap_mods |= seat->kbd.shift ? MOD_SHIFT : MOD_NONE;
-    keymap_mods |= seat->kbd.alt ? MOD_ALT : MOD_NONE;
-    keymap_mods |= seat->kbd.ctrl ? MOD_CTRL : MOD_NONE;
-    keymap_mods |= seat->kbd.meta ? MOD_META : MOD_NONE;
+    keymap_mods |= mods & ~consumed & shift ? MOD_SHIFT : MOD_NONE;
+    keymap_mods |= mods & ~consumed & alt ? MOD_ALT : MOD_NONE;
+    keymap_mods |= mods & ~consumed & ctrl ? MOD_CTRL : MOD_NONE;
+    keymap_mods |= mods & ~consumed & meta ? MOD_META : MOD_NONE;
 
     const struct key_data *keymap;
     if (sym == XKB_KEY_Escape && keymap_mods == MOD_NONE && term->modify_escape_key) {
@@ -1113,7 +1113,7 @@ key_press_release(struct seat *seat, struct terminal *term, uint32_t serial,
     }
 
     else {
-        if (mods & alt) {
+        if (mods & ~consumed & alt) {
             /*
              * When the alt modifier is pressed, we do one out of three things:
              *
diff --git a/keymap.h b/keymap.h
index 8a8c968e..f1b4a0ea 100644
--- a/keymap.h
+++ b/keymap.h
@@ -78,6 +78,25 @@ static const struct key_data key_tab[] = {
     {MOD_ANY,                                   CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\t"},
 };
 
+/*
+ * Shift+Tab produces ISO_Left_Tab
+ *
+ * However, all combos (except Shift+Tab) acts as if we pressed
+ * mods+shift+tab. XKB “consumes” shift for us, hence MOD_SHIFT isn’t
+ * present in any of the entries below. However, the entries still map
+ * to sequences that indicate shift has been pressed.
+ */
+static const struct key_data key_iso_left_tab[] = {
+    {MOD_ALT,                       CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;4;9~"},
+    {MOD_CTRL,                      CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;6;9~"},
+    {MOD_ALT | MOD_CTRL,            CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;8;9~"},
+    {MOD_META,                      CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;10;9~"},
+    {MOD_META | MOD_ALT,            CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;12;9~"},
+    {MOD_META | MOD_CTRL,           CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;14;9~"},
+    {MOD_META | MOD_ALT | MOD_CTRL, CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;16;9~"},
+    {MOD_ANY,                       CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[Z"},
+};
+
 static const struct key_data key_backspace[] = {
     {MOD_SHIFT,                                 CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\x7f"},
     {MOD_ALT,                                   CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033\x7f"},