STEEL DYNAMICS INC — Director's Dealing 2010

Nov 19, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEEL DYNAMICS INC (STLD)
CIK: 0001022671
Period of Report: 2010-11-17

Reporting Person: BUSSE KEITH E (Director, Chairman and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-11-17	Common Stock	S	9900	$15.95	Disposed	82426	Indirect
2010-11-17	Common Stock	S	10000	$15.98	Disposed	72426	Indirect
2010-11-17	Common Stock	S	5100	$16.02	Disposed	67326	Indirect
2010-11-18	Common Stock	S	700	$16.02	Disposed	66626	Indirect
2010-11-19	Common Stock	S	7574	$16.00	Disposed	59052	Indirect
2010-11-19	Common Stock	S	32426	$16.01	Disposed	26626	Indirect
2010-11-19	Common Stock	S	7100	$16.02	Disposed	19526	Indirect
2010-11-19	Common Stock	S	13026	$16.03	Disposed	6500	Indirect
2010-11-19	Common Stock	S	600	$16.04	Disposed	5900	Indirect
2010-11-19	Common Stock	S	5900	$16.05	Disposed	0	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1077957	Direct

Footnotes

F1: Reflects sale of shares by the Busse Family Investment Company, LLC, with respect to which Reporting Person holds neither sole nor shared voting or investment power. Such authority is lodged exclusively in a board of managers, which does not include the Reporting Person, and Reporting Person disclaims all beneficial interest in any of such shares.