Form 4 Filing for Sierra Luis Manuel

This filing details a transaction by Sierra Luis Manuel, a director at STEEL DYNAMICS INC (STLD). On April 10, 2026, Mr. Manuel acquired 12 shares of common stock under the company's 2023 Equity Incentive Plan. This acquisition, valued at a price of $0.0 per share, was part of a dividend equivalent issuance related to additional deferred stock units (DSUs). The transaction is reported as an acquisition (Code A) and is exempt from certain reporting requirements under Section 16 of the Securities Exchange Act of 1934 due to its nature as a dividend reinvestment and specific plan provisions. Following this transaction, Mr. Manuel directly owns 10,804 shares of common stock. The filing also clarifies that these shares are reportable as common stock rather than derivative securities.