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Tempest Therapeutics (TPST) Stock Climbs Over 66% After Hours: Here's Why

BenzingaMohd Haider

Tempest Therapeutics shares soared 66.53% after hours Tuesday following an exclusive option agreement expanding its in vivo CAR-T pipeline.

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  1. SEC EDGARSEC EDGAR

    8-K filing — Tempest Therapeutics, Inc. (TPST)

    Filed: 2026-09-28 AccNo: 0001213900-26-104034 Size: 408 KB Item 1.01: Entry into a Material Definitive Agreement Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers Item 7.01: Regulation FD Disclosure Item 9.01: Financial Statements and Exhibits