Exhibit 99.1 FOR IMMEDIATE RELEASE CORE LAB REPORTS SECOND QUARTER 2026 RESULTS: HOUSTON (July 29, 2026)—Core Laboratories Inc. (NYSE: "CLB") ("Core," "Core Lab," or the "Company") reported second quarter 2026 revenue of $124,600,000. Core's operating income was $9,200,000, with earnings per diluted share ("EPS") of $0.13, all in accordance with U.S. generally accepted accounting principles ("GAAP"). Operating income, ex-items, a non-GAAP financial measure, was $9,400,000, yielding operating margins of 8%, ...