=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-04-23
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: STEEL DYNAMICS INC (STLD)
CIK: 0001022671
--- Reporting Owner ---
Name: Cornew Kenneth W.
CIK: 0001482379
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-04-23 | Code: S (Open market sale)
Shares: -4,800 | Price: $224.85
Total Value: $1,079,280.00
Shares Owned After: 31,499 | Ownership: D (Direct)
Footnotes:
[F1] The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.36 to $225.29, inclusive. The reporting person undertakes to provide to Steel Dynamics, Inc., any securityholder of Steel Dynamics, Inc. 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 footnote (1) to this Form 4.
[Transaction #2]
Security: Common Stock
Date: 2026-04-23 | Code: S (Open market sale)
Shares: -200 | Price: $225.39
Total Value: $45,078.00
Shares Owned After: 31,299 | Ownership: D (Direct)
Footnotes:
[F2] The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.37 to $225.41, inclusive. The reporting person undertakes to provide to Steel Dynamics, Inc., any securityholder of Steel Dynamics, Inc. 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 footnote (2) to this Form 4.
--- Footnotes (Complete Index) ---
F1: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.36 to $225.29, inclusive. The reporting person undertakes to provide to Steel Dynamics, Inc., any securityholder of Steel Dynamics, Inc. 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 footnote (1) to this Form 4.
F2: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.37 to $225.41, inclusive. The reporting person undertakes to provide to Steel Dynamics, Inc., any securityholder of Steel Dynamics, Inc. 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 footnote (2) to this Form 4.
--- Signature ---
/s/ /s/ Theresa E. Wagler by Power of Attorney (2026-04-24)
