User: Using the following text, extract the last 3 CEO's. Place them in a bullet list in order of current to least current.
Assistant: * Matt Comyn - Current / Incumbent since April 2018
* Ian Narev - December 2011 to April 2018
* Sir Ralph Norris KNZM - September 2005 to November 2011
* David Murray AO - June 1992  to September 2005