STEEL DYNAMICS INC — Director's Dealing 2010

Feb 23, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEEL DYNAMICS INC (STLD)
CIK: 0001022671
Period of Report: 2010-02-19

Reporting Person: TEETS RICHARD P JR (Director, Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-19	Common Stock	P	1550	$16.74	Acquired	5916	Indirect
2010-02-19	Common Stock	P	1550	$16.75	Acquired	5916	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	84000	Indirect
Common Stock	5055673	Direct

Footnotes

F1: No current transaction. Corrected Column 5 aggregate share total includes an adjustment of 137,074 additional shares from the share total carried over from Column 5 of Reporting Person's Form 4, filed November 16, 2009, to properly reflect historical aggregate beneficial ownership of both vested and unvested shares.