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Form SC 13G/A TETRA TECHNOLOGIES INC Filed by: VANGUARD GROUP INC Feb 10, 2021 11:59AM


Feb 12, 2020 11:18AM Form SC 13G/A TETRA TECHNOLOGIES INC Filed by: VANGUARD GROUP INC
Feb 12, 2019 06:05AM Form SC 13G/A TETRA TECHNOLOGIES INC Filed by: VANGUARD GROUP INC
Feb 12, 2018 07:37AM Form SC 13G/A TETRA TECHNOLOGIES INC Filed by: VANGUARD GROUP INC
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