MILLETT MARK D 4

What Happened

• Mark D. Millett, Chairman and CEO of Steel Dynamics (STLD), was awarded 46,422 shares under the company's Long-Term Incentive Program on March 13, 2026. To cover withholding taxes on the award, 20,625 of those shares were surrendered to the company at an indicated per-share value of $182.19, generating $3,757,669 in tax withholding. Net shares retained from this grant = 25,797.

Key Details

• Transaction date: 2026-03-13.
• Award (code A): 46,422 shares granted at $0.00 (issuer award under LTIP).
• Tax withholding (code F): 20,625 shares withheld at $182.19/share for $3,757,669.
• Net new shares retained: 25,797 (46,422 granted − 20,625 withheld), worth roughly $4.70M at $182.19/share.
• Footnotes: F1 — award issued under the Company’s 2023 Equity Incentive Plan and LTIP, exempt from Section 16(b) per Rule 16b-3(d). F2 — shares were withheld by the issuer to satisfy the reporting person’s tax withholding obligation, exempt under Rule 16b-3(e).
• Shares owned after the transaction: not disclosed in the provided filing details.
• Filing timeliness: report covers transactions on 2026-03-13 and was filed with period of report 2026-03-13 (no late filing indicated).

Context

• This is a compensation-related award and routine tax-withholding event, not an open-market sale. The F-code disposition reflects shares withheld to satisfy taxes rather than a market sale; such transactions are common following equity vesting.