X0306 4/A 2016-07-15 2016-07-18 0 0000875357 BOK FINANCIAL CORP ET AL BOKF 0001195174 BOYLAN PETER C MRC GLOBAL INC. 2 HOUSTON CENTER, 909 FANNIN, SUITE 3100 HOUSTON TX 77010 1 0 0 0 Common Stock 2016-07-15 4 A 0 75 59.21 A 3820 I Peter C. Boylan III Revocable Trust This Form 4/A is being filed to correct the (i) Amount of Securities Beneficially Owned Following Reported Transactions, (ii) Ownership Form: Direct or Indirect, and (iii) Nature of Indirect Beneficial Ownership due to a scrivener's error. /s/ Frederic Dorwart, Power of Attorney 2016-10-18