FOR IMMEDIATE RELEASE Exhibit 99.1 METTLER-TOLEDO INTERNATIONAL INC. REPORTS FIRST QUARTER 2024 RESULTS COLUMBUS, Ohio, USA – May 9, 2024 – Mettler-Toledo International Inc. (NYSE: MTD) today announced first quarter results for 2024. Provided below are the highlights: • Reported and local currency sales were flat compared with the prior year and benefited 6% from recovering previously announced delayed shipments from the fourth quarter of 2023. • Net earnings per diluted share as reported (EPS) were $8.24, ...