X0306 5 2018-05-31 0 1 1 0001268533 TORTOISE ENERGY INFRASTRUCTURE CORP TYG 0000813913 KNIGHTS OF COLUMBUS 1 COLUMBUS PLAZA NEW HAVEN CT 06510 0 0 1 0 Preferred Stock 4.01% 3 5000000 D Preferred Stock 4.34% 3 15000000 D Preferred Stock 4.01% 2014-12-17 4 P 0 L 300000 10.00 A 8000000 D Preferred Stock 4.34% 2014-12-17 4 P 0 L 600000 10.00 A 21000000 D Knights of Columbus became a beneficial owner of these securities as of October 9, 2014, which made Knights of Columbus subject to Section 16 as a 10% holder based upon 22,400,000 shares of mandatory redeemable preferred (MRP) stock outstanding as of November 30, 2014, as set forth in the issuer's financial statements contained in its annual report to shareholders for the period ended November 30, 2014, as filed with the Securities and Exchange Commission on January 21, 2015. /s/ Gilles Marchand, Vice President 2018-10-10