144 0001614103 XXXXXXXX LIVE 0001481582 Ryerson Holding Corp 001-34735 227 W. MONROE ST., 27TH FLOOR CHICAGO IL 60606 312 292-5000 Lehner Edward J. Officer Director Common E*TRADE from Morgan Stanley

PO Box 484 Jersey City NJ 07303

15603 483752.96 51709690 11/04/2026 NYSE Common E*TRADE from Morgan Stanley

PO Box 484 Jersey City NJ 07303

6365 202025.10 51709690 11/04/2026 NYSE Common 03/31/2023 Performance Shares Vesting Issuer N 70350 03/31/2023 Compensation Y This form is being filed late due to inadvertent broker error. 11/05/2026 /s/ Camilla Merrick, as attorney-in-fact for Edward Lehner