144 0001614103 XXXXXXXX LIVE 0001481582 Ryerson Holding Corporation 001-34735 227 W. MONROE ST., 27TH FLOOR CHICAGO IL 60606 312-292-5000 Lehner Edward J. Officer COMMON Morgan Stanley Smith Barney LLC Executive Services

200 W Civic Center Dr - 4th Floor Sandy UT 84070

10000 247931 31850903 03/05/2025 NYSE COMMON 03/31/2020 PERFORMANCE SHARES Issuer N 10000 03/31/2020 Compensation Y 03/07/2025 /s/ Edward J Lehner