UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: December 3, 2013
Accession Number: 0001193125-13-442744
Submission Type: POS AM
CIK: 0001431372
Company Name: Gastar Exploration USA, Inc.
File Number: 333-174552
CIK: 0001170154
Company Name: GASTAR EXPLORATION, INC.
File Number: 333-174552-01