SCHEDULE 13D

SCHNITZER STEEL INDUSTRIES INC

Class A Common Stock, par value $1.00 · CUSIP: 806882106

Event date: 2025-04-09

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Magnetar Financial LLCReported CIK 0001352851

  Shares: 1,543,133.00 · Class: 5.51%

• Magnetar Capital Partners LPReported CIK 0001353085

  Shares: 1,543,133.00 · Class: 5.51%

• Supernova Management LLCReported CIK 0001368026

  Shares: 1,543,133.00 · Class: 5.51%

• David J. SnydermanReported CIK 0001953511

  Shares: 1,543,133.00 · Class: 5.51%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.