STLD Steel Dynamics Inc

Filed Pursuant to Rule 433 under the Securities Act of 1933

Registration Statement No. 333-235343

Issuer Free Writing Prospectus, dated December 9, 2019

STEEL DYNAMICS, INC.
PRICING TERM SHEET

December 9, 2019

This term sheet to the preliminary prospectus dated December 9, 2019 should be read together with the preliminary prospectus before making a decision in connection with an investment in the securities. The information in this term sheet supersedes the information contained in the preliminary prospectus to the extent that it is inconsistent therewith.

$400,000,000 2.800% Notes due 2024 (the “2024 Notes”)

$600,000,000 3.450% Notes due 2030 (the “2030 Notes”)

*Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

The issuer has filed a registration statement (including a prospectus) with the U.S. Securities and Exchange Commission (the “SEC”) for the offering to which this communication relates.  Before you invest, you should read the prospectus in that registration statement and the related prospectus supplement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering.

You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov.  Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling J.P. Morgan Securities LLC, telephone: collect at 1-212-834-4533; BofA Securities, Inc., telephone: 800-294-1322; Goldman Sachs & Co. LLC, telephone: 866-471-2526; or Morgan Stanley & Co. LLC, telephone: 866-718-1649.

Any disclaimer or other notice that may appear below is not applicable to this communication and should be disregarded. Such disclaimer or notice was automatically generated as a result of this communication being sent by Bloomberg or another email system.