CLB 2019 Proxy Statement

6 OWNERSHIP OF SECURITIES Security Ownership by Certain Beneficial Owners and Management The table below sets forth certain information, as of March 15, 2019, with respect to the common shares beneficially owned by: • each person known by us to be the beneficial owner of more than 5% of our outstanding common shares; • each currently serving Supervisory Director; • each nominee for election as Supervisory Director; • each of our named executive officers; and • all Supervisory Directors and executive officers as a group (all eight of the current Supervisory Directors own shares of Company stock and the new nominee also owns shares of Company stock). Name of Beneficial Owner (1) Number of Common Shares Beneficially Owned Percentage of Common Shares Outstanding (2) WCM Investment Management (3) 4,912,229 11% Clearbridge Investments, LLC (4) 4,805,188 11% The Vanguard Group (5) 3,989,283 9% BlackRock Inc. (6) 3,276,644 7% Massachusetts Financial Services Company (7) 2,608,898 6% David M. Demshur 394,548 * Richard L. Bergmark 149,174 * Monty L. Davis 113,168 * Christopher S. Hill 13,655 * Lawrence Bruno 6,290 * Charles L. Dunlap 5,354 * Jan Willem Sodderland 4,848 * Margaret Ann van Kempen 3,093 * Gregory Barnett 4,000 * Lucia van Geuns 2,291 * Martha Z. Carnes 1,492 * Michael Straughen 800 * All Supervisory Directors and executive officers as a group 698,713 2% * Represents less than 1%. (1) Unless otherwise indicated, each person has sole voting power and investment power with respect to the common shares listed. (2) Based on 44,333,774 common shares outstanding as of March 15, 2019. (3) Based upon an Amendment No. 5 to Schedule 13G filed with the SEC on February 14, 2019, WCM Investment Management ("WCM") is deemed to be the beneficial owner of 4,912,229 shares. WCM has (i) sole voting power with respect to 4,891,791 shares, (ii) shared voting power with respect to 20,468 shares, (iii) sole dispositive power for 4,891,791 shares, and (iv) share dispositive power for 20,468 shares. WCM's current address is 281 Brooks Street, Laguna Beach, California 92651. (4) Based upon an Amendment No. 13 to Schedule 13G/A filed with the SEC on February 14, 2019, Clearbridge Investments, LLC ("Clearbridge") is deemed to be the beneficial owner of 4,805,188 shares. Clearbridge has sole voting power of 4,545,923 shares and sole dispositive power with respect to all of the shares it is deemed to beneficially own. Clearbridge's current address is 620 8th Avenue, New York, NY 10018. (5) Based upon anAmendment No. 6 to Schedule 13G/Afiled with the SEC on February 11, 2019, The Vanguard Group ("Vanguard") is deemed to be the beneficial owner of 3,989,283 shares. Vanguard has (i) sole voting power with respect to 12,985 shares, (ii) shared voting power with respect to 5,400 shares, (iii) sole dispositive power for 3,974,928 shares and (iv) shared dispositive power for 14,355 shares. Vanguard's current address is 100 Vanguard Blvd., Malvern, PA 19355. (6) Based upon an Amendment No. 1 to Schedule 13G filed with the SEC on February 4, 2019, BlackRock, Inc. is deemed to be the beneficial owner of 3,276,644 shares. BlackRock's current address is 55 East 52nd Street, NewYork, NY 10055. Of the 3,276.644