X0101 EFFECT 33 LIVE 2023-01-05 16:00:00

S-3

0001532286 Nine Energy Service, Inc. 333-268999 0001957732 CDK Perforating, LLC 333-268999-09 0001957731 Crest Pumping Technologies, LLC 333-268999-08 0001957724 Magnum Oil Tools GP, LLC 333-268999-07 0001957721 Magnum Oil Tools International, Ltd. 333-268999-06 0001957720 MOTI Holdco, LLC 333-268999-05 0001957719 Nine Downhole Technologies, LLC 333-268999-04 0001957712 Nine Energy Canada Inc. 333-268999-03 0001957710 Nine Energy Service, LLC 333-268999-02 0001957708 RedZone Coil Tubing, LLC 333-268999-01