X0206 3 2023-03-01 0 0000056047 KIRBY CORP KEX 0001968571 Kruger Julie Marie 55 WAUGH DRIVE SUITE 1000 HOUSTON TX 77007 0 1 0 0 VP Human Resources Common Stock, par value $0.10 per share 1844 D Restricted Stock Units Common Stock 646 D Restricted Stock Units Common Stock 948 D Restricted Stock Units Common Stock 972 D Restricted Stock Units Common Stock 2080 D The restricted stock units ("RSUs") will vest in two equal installments on January 24, 2024 and January 24, 2025. Cash or shares of common stock of the issuer, at the election of the issuer, will be delivered to the reporting person on or as soon as practicable after the vesting dates. Each restricted stock unit represents a contingent right to receive cash or one share of common stock of the issuer. The RSUs will vest in three equal installments on January 24, 2024, January 24, 2025 and January 24, 2026. Cash or shares of common stock of the issuer, at the election of the issuer, will be delivered to the reporting person on or as soon as practicable after the vesting dates. The RSUs will vest in four equal installments on February 3, 2024, February 3, 2025, February 3, 2026 and February 3, 2027. Cash or shares of common stock of the issuer, at the election of the issuer, will be delivered to the reporting person on or as soon as practicable after the vesting dates. The RSUs will vest in five equal installments on February 3, 2024, February 3, 2025, February 3, 2026, February 3, 2027 and February 3, 2028. Cash or shares of common stock of the issuer, at the election of the issuer, will be delivered to the reporting person on or as soon as practicable after the vesting dates. Exhibit List: Exhibit 24 - Power of Attorney. Ronald A. Dragg, Agent and Attorney-in-Fact 2023-03-08