CLB 2019 Proxy Statement

3 CORE LABORATORIES N.V. Strawinskylaan 913 Tower A, Level 9 1077 XX Amsterdam The Netherlands PROXY STATEMENT ABOUT THE 2019 ANNUALMEETING OF SHAREHOLDERS WHY HAVE I RECEIVED THESE MATERIALS? This proxy statement and the accompanying proxy card are first being made available to you on the Internet on March 20, 2019, and written notice has been sent to our shareholders in a manner consistent with applicable law. If you receive notice of the materials and desire to request a physical copy of the materials be sent to you, those materials will be mailed to you upon receipt of your request. These materials are being furnished in connection with the solicitation of proxies by and on behalf of the Board of Supervisory Directors of Core Laboratories N.V. ("Core" or the "Company") for use at our 2019 annual meeting of shareholders 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 for the purpose of voting on the proposals described in this proxy statement. WHY DID I RECEIVE A ONE-PAGE NOTICE IN THE MAIL REGARDING THE INTERNET AVAILABILITY OF PROXY MATERIALS INSTEAD OF A FULL SET OF PROXY MATERIALS? As permitted by rules adopted by the United States Securities and Exchange Commission, we are making this proxy statement and our Annual Report on Form 10-K (the "Annual Report") available on the Internet. In order to be able to comply with applicable electronic notification deadlines , we will mail a notice to those who were shareholders as of the close of business Eastern Daylight Time on March 15, 2019, containing instructions on how to access the proxy statement and Annual Report and vote on-line or by phone. In addition, shareholders may request to receive proxy materials in printed form by mail or electronically by email on an ongoing basis. The proxy materials will be posted on www.proxydocs.com/clb and on the Company's website, www.corelab.com . See the Section below on "WHO IS ENTITLED TO VOTE" for the important dates related to voting the shares. Choosing to receive your future proxy materials by email will save us the cost of printing and mailing documents to you. If you choose to receive future proxy materials by email, you will receive an email next year with instructions containing a link to those materials and a link to the proxy voting site. Your election to receive proxy materials by email will remain in effect until you terminate it. WHAT AM I VOTING ON? You will be voting on the following matters proposed by the Board of Supervisory Directors, with the exception of item 9, which is a discussion item only: 1. To re-elect two Class II Supervisory Directors and to elect one new Class II Supervisory Director to serve until our annual meeting in 2022 under the terms and conditions described within the proxy statement and until their successors shall have been duly elected and qualified; 2. To appoint KPMG as our Company's independent registered public accountants for the year ending December 31, 2019; 3. To confirm and adopt our Dutch Statutory Annual Accounts in the English language for the fiscal year ended December 31, 2018, following a discussion of our Dutch Report of the Management Board for that same period; 4. To approve and resolve the cancellation of our repurchased shares held at 12:01 a.m. CEST on May 23, 2019; 5. To approve and resolve the extension of the existing authority to repurchase up to 10% of our issued share capital from time to time for an 18-month period, until November 23, 2020, and such repurchased shares may be used for any legal purpose; 6. To approve and resolve the extension of the authority to issue shares and/or to grant rights (including options to purchase) with respect to our common and preference shares up to amaximumof 10%of outstanding shares per annumuntil November 23, 2020;