Feb 12, 2020 – Tetra Tech Inc (TTEK) CHAIRMAN AND CEO Dan L Batrack Sold $4.5 million of Shares – GuruFocus.comBy AmericanInfrastructureGroup / 02/13/2020 Feb 12, 2020 – Tetra Tech Inc (TTEK) CHAIRMAN AND CEO Dan L Batrack Sold $4.5 million of Shares GuruFocus.com * This article was originally published here