Kirby(KEX) - 2024 Q1 - Quarterly Results

Exhibit 99.1 KIRBY CORPORATION Contact: Kurt Niemietz 713-435-1077 FOR IMMEDIATE RELEASE Segment Results – Marine Transportation Marine transportation revenues for the 2024 first quarter were $475.4 million compared with$412.5 million for the 2023 first quarter. Operating income for the 2024 first quarter was $83.0 million compared with$43.0 million for the 2023 first quarter. Segment operating margin for the 2023 first quarter was 17.5% compared with 10.4% for the 2023 first quarter. In the inland market ...