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TETRA TECHNOLOGIES, INC. ANNOUNCES EXPANSION OF SMACKOVER FORMATION EVERGREEN UNIT AND UPDATE ON ADDITIONAL TEST WELL RESULTS

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THE WOODLANDS, Texas, April 24, 2025 /PRNewswire/ -- TETRA Technologies, Inc. ("TETRA" or the "Company") (NYSE:TTI) announced that on April 22, 2025 the Arkansas Oil & Gas Commission ("AOGC") approved TETRA's application to expand the previously approved Evergreen Unit from 6,138 gross acres to 6,953 gross acres.  A test well reported by a third party within the expansion unit acreage shows lithium concentrations above the estimated average within the original 6,138 acres Evergreen Unit, and based on reservoir studies conducted by Lonquist Engineering, the new expansion unit is expected to enhance and prolong the production of bromine and other minerals within the Evergreen Unit from the Smackover Formation.  The reservoir studies will be provided to the Company's "qualified person" for further evaluation.

The AOGC approved TETRA's application to establish the expansion unit and integrate landowners.  The formal AOGC order is expected to be finalized within the next 30 days.  Saltwerx, LLC is a participant in the Evergreen Unit, owning approximately 35% interest of the brine interests.  TETRA is the operator of the Evergreen Unit.

TETRA recently completed the drilling and sampling operations of an additional test well in the Evergreen Unit with very encouraging results. With the Evergreen Unit expansion approved and the additional test well results, the reservoir engineering model will be updated to reflect new resource volumes for bromine and lithium in the coming weeks.  In addition to the rich volumes of bromine and lithium in the expanded Evergreen Unit, recent test well results have shown encouraging levels of magnesium and manganese, which are on the U.S. list of critical minerals and which are largely supplied from countries outside the U.S.  Given TETRA's progress with mineral extraction from produced water, the Company is evaluating extraction technologies and development of these additional minerals, including engineering studies.  It is encouraging that all these minerals, three of which are on the U.S. critical minerals list, may be produced from the same brine that will be developed first for TETRA's bromine project requirements.

TETRA is expected to publish an updated resource study prepared by the Company's qualified person identifying the incremental volumes of bromine and lithium in the expanded Evergreen Unit.  TETRA remains focused on developing the bromine assets and continues to advance engineering efforts as well as key timeline  investments to advance the project.