X0306 4 2020-02-21 false 0000844965 TETRA TECHNOLOGIES INC TTI 0001182288 WALLACE BASS C JR 24955 INTERSTATE 45 NORTH THE WOODLANDS TX 77380 false true false false Sr VP & General Counsel Common Stock 2020-02-21 4 F false 10637.00 1.41 D 168557.00 D Common Stock 2020-02-21 4 M false 35873.00 0.00 A 204430.00 D Common Stock 2020-02-22 4 F false 1524.00 1.41 D 202906.00 D Common Stock 36124.00 I by 401(k) Plan Restricted Stock Unit 2020-02-21 4 M false 35873.00 0.00 D Common Stock 35873.00 71747.00 D Reflects units surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of the restricted stock unit granted on February 21, 2019. Represents vested shares of restricted stock units granted on February 21, 2019. Restricted stock units convert into common stock on a one-for-one basis. Reflects shares surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of the restricted stock award granted on February 22, 2017. Rounded. Reflects shares held for the Reporting Person's account by the Trustee of TETRA Technologies, Inc. 401(k) Retirement Plan as of December 31, 2019. The remaining unvested portion of this restricted stock unit award will vest every six months until fully vested on February 21, 2022. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock upon vesting of the unit. Kimberly M. O'Brien, attorney in fact 2020-02-25