Richard P. Teets Jr. - 20 Feb 2026 Form 4 Insider Report for STEEL DYNAMICS INC (STLD)

Role: Director
Signature: /s/ Richard P. Teets, Jr.
Issuer symbol: STLD
Transactions as of: 20 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 23 Feb 2026, 13:03:38 UTC
Previous filing: 12 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
TEETS RICHARD P JR	Director	7575 W. JEFFERSON BLVD., FORT WAYNE	/s/ Richard P. Teets, Jr.	23 Feb 2026	0001195950

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STLD	Common Stock	Award	$0	+197	+0%	$0.000000	4,980,085	20 Feb 2026	Direct	F1
holding	STLD	Common Stock						93,119	20 Feb 2026	By spouse
holding	STLD	Common Stock						73,000	20 Feb 2026	By Teets Family Foundation	F2

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

Explanation of Responses:

Id	Content
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.

Content

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)

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.