Alfonso Leon, executive vice president and CFO, for Apache Corp., has resigned to pursue other opportunities. Leon's departure is not related to any issues regarding financial disclosures, accounting or legal matters, the company said in a news release.

Executive Vice President P. Anthony Lannie will serve as interim CFO as the company conducts a search for a new CFO. Prior to joining Apache as general counsel in 2003, Lannie served as president of Kinder Morgan Power Co. and president of Coral Energy Canada, a subsidiary of Shell Oil Co.