144 0001662899 XXXXXXXX LIVE 0000056047 Kirby Corporation 001-07615 55 Waugh Dr Ste 1000 Houston TX 77007 713-435-1000 Scott Miller Officer Common Stock Merrill Lynch

800 Capitol St Ste 1900 Houston TX 77002

3960 477904.53 54200000 02/10/2026 NYSE Common Stock 01/24/2026 Stock Bonus Kirby Corporation N 1461 01/24/2026 Compensatory Payment Common Stock 02/03/2026 Stock Bonus Kirby Corporation N 5375 02/03/2026 Compensatory Payment Y 02/10/2026 Scott Miller