Contacts

Investor Relations

Jeffrey Freedman
T: 281-531-7200
investorrelations@ecostim-es.com

Transfer Agent

Computershare
P.O. Box 30170
College Station, TX 77842-3170
T: 781-575-3100
web.queries@computershare.com
www.computershare.com

Auditor

Whitley Penn
8343 Douglas Avenue
Suite 400
Dallas, TX 75225

Legal Counsel

Vinson & Elkins, LLP
1001 Fannin Street
Suite 2500
Houston, TX 77002