Kettleborough’s appointment forms part of the Gibraltar Financial Services Commission’s mandated compliance and oversight improvements.
Kettlebrough is best known as the chief executive of consolidator Chesnara from 2004 to 2014.
STM said it hoped to tap his skills building a “respected sector performer” and his “corporate governance, acquisitions and business transformation skills”.
Life and pensions governance
Robin Ellison, interim chairman, said: “Graham’s appointment comes at an exciting time for the business, with plans for both a diversification of our product range as well as seeking opportunistic acquisitions.
“Invariably his depth of experience will also ensure that STM continues to build on its corporate governance and regulatory framework.”
Commenting on his appointment, Kettleborough paid tribute to the resilience and innovation of STM.