diff --git a/contracts/common/Controlled.sol b/contracts/common/Controlled.sol
index 5b001c7..0e96cc4 100644
--- a/contracts/common/Controlled.sol
+++ b/contracts/common/Controlled.sol
@@ -1,6 +1,7 @@
 pragma solidity >=0.5.0 <0.6.0;
 
 contract Controlled {
+    event NewController(address controller);
     /// @notice The address of the controller is the only address that can call
     ///  a function with this modifier
     modifier onlyController {
@@ -18,5 +19,6 @@ contract Controlled {
     /// @param _newController The new controller of the contract
     function changeController(address payable _newController) public onlyController {
         controller = _newController;
+        emit NewController(_newController);
     }
 }
diff --git a/contracts/common/Owned.sol b/contracts/common/Owned.sol
index ab6075a..1a3eea8 100644
--- a/contracts/common/Owned.sol
+++ b/contracts/common/Owned.sol
@@ -3,6 +3,7 @@ pragma solidity >=0.5.0 <0.6.0;
 /// @dev `Owned` is a base level contract that assigns an `owner` that can be
 ///  later changed
 contract Owned {
+    event OwnerChanged(address newOwner);
 
     /// @dev `owner` is the only address that can call a function with this
     /// modifier
@@ -24,6 +25,7 @@ contract Owned {
     /// @param _newOwner The address of the new owner. 0x0 can be used to create
     ///  an unowned neutral vault, however that cannot be undone
     function changeOwner(address payable _newOwner) public onlyOwner {
+        emit OwnerChanged(_newOwner);
         newOwner = _newOwner;
     }