Amprius Technologies Soars 26% After Jump
Amprius Technologies shares surged 26.5% to $21.70 Thursday, with volume topping 13 million. The rally followed insider-sale filings and a recent short-seller report, but no new company announcements since May 19. CEO Thomas Stepien and other insiders disclosed stock sales tied to vesting awards. First-quarter revenue rose 153% to $28.5 million, and Amprius raised its 2026 revenue outlook.