STLD Form 4: Director receives 16 DSU dividend equivalents; total 10,779 shares

Rhea-AI Filing Summary

Steel Dynamics (STLD) reported a director transaction. On 10/10/2025, the director was credited 16 additional deferred stock units (DSUs) as a dividend equivalent tied to the director retainer under the 2023 Equity Incentive Plan. The entry price is shown as $0 because it reflects dividend reinvestment rather than an open‑market trade.

These DSUs are payable solely in shares of common stock when settled and are reported as directly owned shares. Following the credited units and prior dividend reinvestments, the director’s beneficial ownership stands at 10,779 shares, held directly. The transaction is described as exempt under applicable Section 16 rules due to the plan’s dividend reinvestment feature.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Sierra Luis Manuel

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	16	$0.00	--

Holdings After Transaction: Common Stock — 10,779 shares (Direct)

Footnotes (1)

1. Represents the number of shares of common stock underlying additional deferred stock units (DSUs) issued to the reporting person as a dividend equivalent, in connection with this person's retainer as a director under the Company's 2023 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3). Reportable as directly owned shares of common stock, rather than as a derivative security in Table II, because any and all underlying DSUs are payable, at such time as they are to be settled, solely in shares of common stock. (See Lincoln National Corp. (March 20, 1992) Q.3). Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Sierra Luis Manuel

(Last) (First) (Middle)

4830 ENCLAVE WAY

(Street)

PARK CITY UT 84098

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
STEEL DYNAMICS INC [ STLD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/10/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/10/2025		A		16(1)(2)	A	$0	10,779(3)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the number of shares of common stock underlying additional deferred stock units (DSUs) issued to the reporting person as a dividend equivalent, in connection with this person's retainer as a director under the Company's 2023 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

2. Reportable as directly owned shares of common stock, rather than as a derivative security in Table II, because any and all underlying DSUs are payable, at such time as they are to be settled, solely in shares of common stock. (See Lincoln National Corp. (March 20, 1992) Q.3).

3. Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

	/s/ Theresa E. Wagler by Power of Attorney	10/14/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What did Steel Dynamics (STLD) disclose in this Form 4?

A director received 16 additional DSUs as a dividend equivalent on 10/10/2025 under the 2023 Equity Incentive Plan.

How many shares does the reporting person beneficially own after this transaction for STLD?

The filing lists 10,779 shares as beneficially owned, held directly.

Was there a cash price paid for the STLD transaction?

The filing shows a price of $0, reflecting a dividend reinvestment credit rather than a market purchase.

How are the DSUs from this STLD filing settled?

The DSUs are payable solely in shares of common stock when they are settled.

Why is the STLD transaction considered exempt?

It is described as exempt due to the plan’s dividend reinvestment feature and Section 16 rules (including Rule 16b-3).

Is this reported as a derivative security for STLD?

It is reported as directly owned shares because the DSUs are payable only in common stock at settlement.