Attached files

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EX-31.1 - EX-31.1 - STEEL DYNAMICS INCstld-20200630xex31d1.htm
10-Q/A - 10-Q/A - STEEL DYNAMICS INCstld-20200630x10qa.htm

EXHIBIT 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

I, Theresa E. Wagler, certify that:

1.    I have reviewed this quarterly report for the period ended June 30, 2020, on Form 10-Q/A Amendment No. 1 of Steel Dynamics, Inc.;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

/s/ Theresa E. Wagler

Theresa E. Wagler

Executive Vice President and Chief Financial Officer

(Principal Financial Officer and Principal Accounting Officer)

August 11, 2020