STLD provides Q3 2025 results press release as Exhibit 99.1

Rhea-AI Filing Summary

Steel Dynamics, Inc. (STLD) furnished a press release announcing its third quarter 2025 results. The company submitted a Form 8-K stating that the press release titled “Steel Dynamics Reports Third Quarter 2025 Results” was provided as Exhibit 99.1 on October 20, 2025. The company specified that the information in the exhibit is furnished and not deemed filed under the Securities Exchange Act of 1934, unless expressly incorporated by reference. The report was signed by Executive Vice President and Chief Financial Officer Theresa E. Wagler on October 21, 2025.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported) October 20, 2025

STEEL DYNAMICS, INC.

(Exact name of registrant as specified in its charter)

Indiana		0-21719		35-1929476
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

7575 West Jefferson Blvd, Fort Wayne, Indiana 46804

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: 260-969-3500

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock voting, $0.0025 par value	STLD	NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 2.02. Results of Operations and Financial Condition

On October 20, 2025, Steel Dynamics, Inc. issued a press release titled “Steel Dynamics Reports Third Quarter 2025 Results.”  A copy of that press release is attached hereto as Exhibit 99.1.

The information contained in Exhibit 99.1 is furnished under this Item 2.02 and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any filing thereunder or under the Securities Act of 1933, as amended, except as may be expressly set forth by specific reference in any such filing.

Item 9.01. Financial Statements and Exhibits

(d ) Exhibits.

The following exhibit is furnished with this report:

Exhibit Number  Description

99.1 A press release dated October 20, 2025, titled “Steel Dynamics Reports Third Quarter 2025 Results.”

104 Cover Page Interactive Data File – the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Report to be signed on its behalf by the undersigned hereto duly authorized.

		STEEL DYNAMICS, INC.
		/s/ Theresa E. Wagler
Date: October 21, 2025	By:	Theresa E. Wagler
	Title:	Executive Vice President and Chief Financial Officer

FAQ

What did Steel Dynamics (STLD) announce in its Form 8-K?

It furnished a press release titled “Steel Dynamics Reports Third Quarter 2025 Results” as Exhibit 99.1.

Is the Q3 2025 press release considered filed or furnished?

It is furnished and not deemed filed under the Exchange Act unless expressly incorporated by reference.

What exhibit contains the Q3 2025 results press release for STLD?

Exhibit 99.1 contains the press release.

When was the press release referenced by STLD?

October 20, 2025.

Who signed the report for Steel Dynamics?

Theresa E. Wagler, Executive Vice President and Chief Financial Officer, signed on October 21, 2025.

What exchange lists STLD common stock?

NASDAQ Global Select Market.