UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

NOTICE OF EFFECTIVENESS

Effective Date: April 25, 2017
Form: S-4
CIK: 0000928022
Company Name: CALLON PETROLEUM CO
File Number: 333-217287
CIK: 0001293651
Company Name: Callon Petroleum Operating CO
File Number: 333-217287-01
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