diff --git a/docs/ABI/Mangling.rst b/docs/ABI/Mangling.rst
index ea37b36afc9ad..d31e0d4483789 100644
--- a/docs/ABI/Mangling.rst
+++ b/docs/ABI/Mangling.rst
@@ -331,6 +331,7 @@ with a differentiable function used for differentiable programming.
   global ::= generic-signature? type 'WOe' // Outlined consume
   global ::= generic-signature? type 'WOr' // Outlined retain
   global ::= generic-signature? type 'WOs' // Outlined release
+  global ::= generic-signature? type 'WOB' // Outlined initializeWithTake, not using value witness
   global ::= generic-signature? type 'WOb' // Outlined initializeWithTake
   global ::= generic-signature? type 'WOc' // Outlined initializeWithCopy
   global ::= generic-signature? type 'WOC' // Outlined initializeWithCopy, not using value witness
diff --git a/include/swift/Demangling/DemangleNodes.def b/include/swift/Demangling/DemangleNodes.def
index 51b9042d5337c..421b10a4bde60 100644
--- a/include/swift/Demangling/DemangleNodes.def
+++ b/include/swift/Demangling/DemangleNodes.def
@@ -400,6 +400,7 @@ NODE(AsyncRemoved)
 // Added in Swift 5.TBD
 NODE(ObjectiveCProtocolSymbolicReference)
 
+NODE(OutlinedInitializeWithTakeNoValueWitness)
 NODE(OutlinedInitializeWithCopyNoValueWitness)
 NODE(OutlinedAssignWithTakeNoValueWitness)
 NODE(OutlinedAssignWithCopyNoValueWitness)
diff --git a/lib/Demangling/Demangler.cpp b/lib/Demangling/Demangler.cpp
index b261d56f22e48..2088c88fdd9e9 100644
--- a/lib/Demangling/Demangler.cpp
+++ b/lib/Demangling/Demangler.cpp
@@ -3646,6 +3646,15 @@ NodePointer Demangler::demangleWitness() {
     }
     case 'O': {
       switch (nextChar()) {
+      case 'B': {
+        if (auto sig = popNode(Node::Kind::DependentGenericSignature))
+          return createWithChildren(
+              Node::Kind::OutlinedInitializeWithTakeNoValueWitness,
+              popNode(Node::Kind::Type), sig);
+        return createWithChild(
+            Node::Kind::OutlinedInitializeWithTakeNoValueWitness,
+            popNode(Node::Kind::Type));
+      }
       case 'C': {
         if (auto sig = popNode(Node::Kind::DependentGenericSignature))
           return createWithChildren(Node::Kind::OutlinedInitializeWithCopyNoValueWitness,
diff --git a/lib/Demangling/NodePrinter.cpp b/lib/Demangling/NodePrinter.cpp
index ae7d52243619f..e1b9022d60dc1 100644
--- a/lib/Demangling/NodePrinter.cpp
+++ b/lib/Demangling/NodePrinter.cpp
@@ -589,6 +589,7 @@ class NodePrinter {
     case Node::Kind::OutlinedRetain:
     case Node::Kind::OutlinedRelease:
     case Node::Kind::OutlinedInitializeWithTake:
+    case Node::Kind::OutlinedInitializeWithTakeNoValueWitness:
     case Node::Kind::OutlinedInitializeWithCopy:
     case Node::Kind::OutlinedAssignWithTake:
     case Node::Kind::OutlinedAssignWithCopy:
@@ -1517,6 +1518,7 @@ NodePointer NodePrinter::print(NodePointer Node, unsigned depth,
     print(Node->getChild(0), depth + 1);
     return nullptr;
   case Node::Kind::OutlinedInitializeWithTake:
+  case Node::Kind::OutlinedInitializeWithTakeNoValueWitness:
     Printer << "outlined init with take of ";
     print(Node->getChild(0), depth + 1);
     return nullptr;
diff --git a/lib/Demangling/OldRemangler.cpp b/lib/Demangling/OldRemangler.cpp
index 6013ee0ba39e9..7d1b78750b9b1 100644
--- a/lib/Demangling/OldRemangler.cpp
+++ b/lib/Demangling/OldRemangler.cpp
@@ -2661,6 +2661,13 @@ ManglingError Remangler::mangleOutlinedDestroy(Node *node, unsigned depth) {
   Buffer << "Wh";
   return mangleSingleChildNode(node, depth + 1);
 }
+
+ManglingError
+Remangler::mangleOutlinedInitializeWithTakeNoValueWitness(Node *node,
+                                                          unsigned depth) {
+  return MANGLING_ERROR(ManglingError::UnsupportedNodeKind, node);
+}
+
 ManglingError Remangler::mangleOutlinedInitializeWithCopyNoValueWitness(Node *node,
                                                                         unsigned depth) {
   return MANGLING_ERROR(ManglingError::UnsupportedNodeKind, node);
diff --git a/lib/Demangling/Remangler.cpp b/lib/Demangling/Remangler.cpp
index 687357facd5c4..f510491c990b8 100644
--- a/lib/Demangling/Remangler.cpp
+++ b/lib/Demangling/Remangler.cpp
@@ -3576,6 +3576,14 @@ ManglingError Remangler::mangleOutlinedInitializeWithTake(Node *node,
   return ManglingError::Success;
 }
 
+ManglingError
+Remangler::mangleOutlinedInitializeWithTakeNoValueWitness(Node *node,
+                                                          unsigned depth) {
+  RETURN_IF_ERROR(mangleChildNodes(node, depth + 1));
+  Buffer << "WOB";
+  return ManglingError::Success;
+}
+
 ManglingError Remangler::mangleOutlinedInitializeWithCopy(Node *node,
                                                           unsigned depth) {
   RETURN_IF_ERROR(mangleChildNodes(node, depth + 1));
diff --git a/test/Demangle/Inputs/manglings.txt b/test/Demangle/Inputs/manglings.txt
index 17d9e400a0c95..65593d300a26d 100644
--- a/test/Demangle/Inputs/manglings.txt
+++ b/test/Demangle/Inputs/manglings.txt
@@ -298,6 +298,8 @@ _T0SqWOC ---> outlined init with copy of Swift.Optional
 _T0SqWOD ---> outlined assign with take of Swift.Optional
 _T0SqWOF ---> outlined assign with copy of Swift.Optional
 _T0SqWOH ---> outlined destroy of Swift.Optional
+_T0SqWOB ---> outlined init with take of Swift.Optional
+_T0SqWOb ---> outlined init with take of Swift.Optional
 _T03nix6testitSaySiGyFTv_ ---> outlined variable #0 of nix.testit() -> [Swift.Int]
 _T03nix6testitSaySiGyFTv_r ---> outlined read-only object #0 of nix.testit() -> [Swift.Int]
 _T03nix6testitSaySiGyFTv0_ ---> outlined variable #1 of nix.testit() -> [Swift.Int]