X0306 4 2019-03-15 0 0000789460 WORLD FUEL SERVICES CORP INT 0001697820 Lake Robert Alexander C/O WORLD FUEL SERVICES CORPORATION 9800 N.W. 41ST STREET MIAMI FL 33178 0 1 0 0 EVP, Chf. Legal Officer, CoSec Common Stock 2019-03-15 4 F 0 322 29.68 D 43061 D Common Stock 2019-03-15 4 A 0 17001 29.68 A 60062 D 935 restricted stock units held by the reporting person vested and settled on March 15, 2019. The issuer withheld the reported shares to cover the reporting person's tax liability associated with these restricted stock units. The price shown is the closing price of the issuer's common stock on the NYSE on March 15, 2019. These restricted stock units will vest in three equal annual installments beginning on March 15, 2020. /s/ Amy A. Quintana, Attorney-in-fact 2019-03-19