X0609 4 2026-11-04 0001481582 Ryerson Holding Corp RYZ 0001614103 Lehner Edward J. false C/O RYERSON HOLDING CORPORATION 227 W. MONROE ST., 27TH FLOOR CHICAGO IL 60606 true true false false CEO false Common Stock (par value $0.01 per share) 2026-11-04 4 S false 21968 31.22 D 623596.4833 D The reporting person sold 21,968 shares of Ryerson Holding Corporation common stock in part to satisfy tax obligations. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices between $31.003843 and $31.74. The reporting person undertakes to provide Ryerson Holding Corporation, any security holder of Ryerson Holding Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Camilla Rykke Merrick, attorney-in-fact 2026-11-05