Otto Energy Limited advise of the appointment of Mr. Sergio Castro to the position of Chief Financial Officer based in the company's Houston office. The appointment comes after an extensive search and interview process. Mr. Castro was most recently with Contango Oil & Gas Company based in Houston and served as the Vice President and Treasurer for over 13 years. Mr. Castro undertook his accounting training with Arthur Andersen in the energy audit department before moving into commerce in early 2001. Prior to working in the accounting field, Mr. Castro served six years in the United States Navy. Mr. Castro has a B Bus from University of Houston, is a qualified Certified Public Accountant and Certified Fraud Examiner. The company also advises that Ms. Krista Walter, Vice President Investor Relations, has given notice that she will terminate her contract at the end of December 2019.