CLB 2019 Proxy Statement

61 Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: The Notice and Proxy Statement and Annual Report are available at www.proxydocs.com/clb. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ M52481-P33425-P33515 CORE LABORATORIES N.V. Annual Meeting of Shareholders May 23, 2019 9:00 AM CEST This proxy is solicited by the Board of Supervisory Directors This Proxy is being solicited on behalf of the Board of Supervisory Directors of Core Laboratories N.V. for the Annual Meeting of Shareholders to be held on Thursday, May 23, 2019. The undersigned hereby constitutes and appoints each member of the Supervisory Board, Mark Elvig, general counsel of the Company, Jacobus Schouten, as well as Jaap Stoop, Jules van de Winckel, Joppe Schoute and any other lawyer or notary working with NautaDutilh N.V., the Company's Dutch legal counsel, and each or any of them, his true and lawful attorneys and proxies with full power of substitution, for and in the name, place and stead of the undersigned, to attend the Annual Meeting of Shareholders of Core Laboratories N.V. to be held at the Hotel Sofitel Legend the Grand Amsterdam, Oudezijds Voorburgwal 197, 1012 EX Amsterdam The Netherlands, on Thursday, May 23, 2019 at 9:00 a.m. CEST and any adjournment(s) thereof, with all powers the undersigned would possess if personally present and to vote thereof, as provided on the reverse side of this card, the number of shares the undersigned would be entitled to vote if personally present. In accordance with their discretion, said attorneys and proxies are authorized to vote upon such other matters and issues as may properly come before the meeting or any adjournment thereof. THIS PROXY IS BEING SOLICITED ON BEHALF OF THE BOARD OF SUPERVISORY DIRECTORS. THIS PROXY WILL BE VOTED AS DIRECTED. IN THE ABSENCE OF DIRECTION, THIS PROXY WILL BE VOTED FOR THE THREE NOMINEES FOR SUPERVISORY DIRECTOR IN PROPOSAL 1, FOR PROPOSALS 2, 3, 4, 5, 6, 7, AND 8. Address Changes/Comments: (If you noted any Address Changes/Comments above, please mark corresponding box on the reverse side) Continued and to be signed on reverse side