Committed to growth. Focused on value.
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Contact Investor Relations

Corporate Headquarters

24955 Interstate 45 North
The Woodlands, TX 77380
+1 (281) 367-1983

Investor Relations

Elijio Serrano
Chief Financial Officer
+1 (281) 367-1983
eserrano@tetratec.com

Media Relations

+1 (281) 364-5060
media@tetratec.com

Corporate Secretary

24955 Interstate 45 North
The Woodlands, TX 77380
Phone: +1 (281) 367-1983
Fax: +1 (281) 364-4398
corpsecretary@tetratec.com

Transfer Agent

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

Independent Registered Public Accounting Firm

Ernst & Young
5 Houston Center, 1401 McKinney
Suite 1200
Houston, TX 77010
+1 (713) 750-1500

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