STEEL DYNAMICS INC — Director's Dealing 2026

Feb 23, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEEL DYNAMICS INC (STLD)
CIK: 0001022671
Period of Report: 2026-02-20

Reporting Person: TEETS RICHARD P JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-20	Common Stock	A	197	—	Acquired	4980085	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	93119	Indirect
Common Stock	73000	Indirect

Footnotes

F1: Issued as deferred stock units (DSUs) in connection with reporting person's retainer, as a director, under the Company's 2023 Equity Incentive Plan and exempt from Section 16(b) by virtue of Rule 16b-3(d)(1) and (3). These DSUs are reportable, however, as directly owned shares of common stock, rather than as derivative security in Table II, because any and all underlying DSUs are payable, at such time as they are to be settled, solely in common stock. (See Lincoln National Corp. (March 20, 1992) (Q.3)

F2: Represents securities held by the Teets Family Foundation, a charitable foundation of which the reporting person is a member and director. The reporting person has voting and investment power over all securities owned by the foundation.