Theresa E. Wagler - 23 Feb 2026 Form 4 Insider Report for STEEL DYNAMICS INC (STLD)

Role: Executive Vice President & CFO
Signature: /s/ Theresa E. Wagler
Issuer symbol: STLD
Transactions as of: 23 Feb 2026
Net transactions value: -$953,540
Form type: 4
Filing time: 25 Feb 2026, 13:09:30 UTC
Previous filing: 24 Feb 2026
Next filing: 13 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Wagler Theresa E	Executive Vice President & CFO	7575 W. JEFFERSON BLVD., FORT WAYNE	/s/ Theresa E. Wagler	25 Feb 2026	0001301637

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STLD	Common Stock	Tax liability	$262,043	-1,355	-0.28%	$193.39	486,932	23 Feb 2026	Direct	F1
transaction	STLD	Common Stock	Tax liability	$262,430	-1,357	-0.28%	$193.39	485,575	23 Feb 2026	Direct	F1
transaction	STLD	Common Stock	Tax liability	$429,066	-2,189	-0.45%	$196.01	483,386	24 Feb 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents disposition to issuer to cover taxes payable upon vesting of previously issued and reported restricted stock units, exempt pursuant to Rule 16b-3.