X0101 EFFECT 33 LIVE 2021-05-14 16:00:00

S-4

0001724965 TALOS ENERGY INC. 333-255896 0001751675 Talos Production LLC 333-255896-20 0001751761 CKB Petroleum, LLC 333-255896-19 0001751716 Stone Energy Holding, L.L.C. 333-255896-18 0001623831 Talos Argo Inc. 333-255896-17 0001723011 Talos Energy LLC 333-255896-16 0001751688 Talos Energy Holdings LLC 333-255896-15 0001751687 Talos Energy International LLC 333-255896-14 0001751686 Talos Energy Offshore LLC 333-255896-13 0001751683 Talos Energy Phoenix LLC 333-255896-12 0001751682 Talos ERT LLC 333-255896-11 0001843047 Talos Exploration LLC 333-255896-10 0001751681 Talos Gulf Coast LLC 333-255896-09 0001751680 Talos Gulf Coast Offshore LLC 333-255896-08 0001751679 Talos Gulf Coast Onshore LLC 333-255896-07 0001843199 Talos Oil & Gas LLC 333-255896-06 0000904080 TALOS PETROLEUM LLC 333-255896-05 0001751676 Talos Production Finance Inc. 333-255896-04 0001463174 Talos Resources LLC 333-255896-03 0001843124 Talos Third Coast LLC 333-255896-02 0001751685 Talos Energy Operating Co LLC 333-255896-01