Core Laboratories NV announced that board member Joe Perna would retire from his service on the Board, as of the annual shareholder meeting in 2013, at the end of a full elected term, and Board member Rene Joyce would retire from his service on the Board, as of the annual shareholder meeting in 2014, at the end of a full elected term. Mr. Perna will retire from the Board in 2013, as announced, but Mr. Joyce informed the company on December 31, 2012 that he now plans to resign from the Board a year early, effective at the 2013 annual meeting, due to other business commitments that make it difficult to devote the necessary time to serve on Board.