Julian Hammond has been named CEO and president of Tethys Petroleum Ltd., effective immediately.

The company also announced Peter Lilley has been appointed as non-executive chairman.

Due to recent health reasons, David Robson was unable to continue in his roles of executive chairman, president, and CEO. The board expressed its gratitude to him for his role in building a strong, successful, and resilient company.

Hammond has been deputy CEO since February 2011 when he assumed responsibility for the day-to-day operating activities of the company. In addition, Hammond was appointed to board of directors with effect from January 2012. He has worked for the company since 2006 and played a major role in both the company’s listing on the Toronto Stock Exchange in June 2007 and the standard listing on the London Stock Exchange in 2011.