144 0002025908 XXXXXXXX LIVE 0000074303 Olin Corporation 001-01070 190 Carondelet Plaza Suite 1530 Clayton MO 63105 3144801466 Deon Carter Officer Common Stock Computershare

144 Fernwood Avenue Edison NJ 8837

6500 157885 113636799 02/25/2026 NYSE Common Stock 02/20/2026 Open Market Sale Olin Corporation N 6500 02/25/2026 Compensation Y 02/25/2026 /s/. Deon Carter