The International Stock Exchange (TISE) is planning a smooth transition to a new Managing Director of its regulatory arm, The International Stock Exchange Authority Limited (TISEA).

Advocate Diana Thompson, the current regulatory head of TISEA, will be stepping down from the role at the end of the year, after nearly 20 years’ involvement with the Exchange business.

Advocate Thompson will be joining a new legal practice alongside her husband, Advocate David Thompson.

Jon Moulton, Chairman of The International Stock Exchange Group Limited (TISEG), which is the commercial arm and parent company of the Exchange Group, said: “Diana is a long standing member of the team who has held a number of different roles over the years. Her work has been invaluable and I wish her every success for the future in her new venture. Our search to find a successor is already well underway and we are expecting a smooth transition.”

Advocate Thompson previously worked at the Guernsey Financial Services Commission (GFSC) prior to joining what was then the Channel Islands Stock Exchange (CISX) in 1998. She headed the Membership Department and the Corporate and Legal Affairs Department before becoming CEO of The Channel Islands Securities Exchange Authority Limited (CISEA) in 2013. That company changed its name to TISEA earlier this year as part of a wider rebrand of the business.

Advocate Thompson said: “I have thoroughly enjoyed my time at the Exchange and in particular, the last four heading up the regulatory part of the business. I will be sad to be leaving people whom I have worked with for a number of years but the opportunity to join David in this new venture is something which I could not overlook. I am proud to be leaving the company in such a strong position and wish the business every success in the future.”

Fiona Le Poidevin, CEO of TISEG, added: “I would like to thank Diana for all her hard work at the Exchange. It has been a pleasure to work so closely with her since I joined the business two and a half years ago and I wish her all the very best with her future plans.

“Diana will not be leaving us until the end of the year and so, in the meantime, it is very much a case of business as usual, with the exception that we are now searching for a successor who will be a highly skilled professional with proven leadership skills and an in-depth understanding of the regulatory environment. This process is already well underway and we hope that the individual will be able to take the helm prior to the end of the year, ensuring a smooth transition for our members, issuers and staff.”