Investor Contacts

Corporate Headquarters

10000 Energy Drive
Spring, TX 77389
+1 (281) 367-1983

Investor Relations

Matthew J. Sanderson
Executive Vice President and Chief Financial Officer
+1 (281) 367-1983
msanderson@onetetra.com

Kurt Hallead
Treasurer and Vice President of Investor Relations
+1 (281) 367-1983
khallead@onetetra.com 

 Media Relations

+1 (281) 364-5045
media@onetetra.com

Corporate Secretary

10000 Energy Drive
Spring, TX 77389
Phone: +1 (281) 367-1983
Fax: +1 (281) 364-4398
corpsecretary@onetetra.com

Transfer Agent

Computershare Trust Company, N.A.
PO Box 43070
Providence, RI 02940
+1 (303) 262-0600

Independent Registered Public Accounting Firm

Grant Thornton LLP
700 Milam St., Suite 300
Houston, TX 77002
+1 (832) 476-3600