STEEL DYNAMICS INC — Director's Dealing 2014

May 20, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEEL DYNAMICS INC (STLD)
CIK: 0001022671
Period of Report: 2014-05-19

Reporting Person: Wagler Theresa E (Executive Vice President & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-05-19	Common Stock	M	2841	$14.08	Acquired	166646	Direct
2014-05-19	Common Stock	F	2200	$18.18	Disposed	164446	Direct
2014-05-19	Common Stock	F	92	$18.18	Disposed	164354	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-05-19	Employee Stock Option (right to buy)	$14.08	M	2841	Disposed	2014-05-21	Common Stock (2841)	Direct

Footnotes

F1: Acquisition of stock pursuant to exercise of employee stock option, exempt under Exchange Act Rule 16b-6(b) and Rule 16b-3(d)(1).

F2: Exercise of stock option exempt pursuant to Rule 16b-6(b).

F3: Disposition to Issuer: Shares withheld by Issuer in payment of reporting person's exercise price under stock option in accordance with Exchange Act Rule 16-b3(d)(1), approved in advance by Compensation Committee and exempt from Section 16(b) of Exchange Act in accordance with Exchange Act Rule 16-b-3(e).

F4: Payment of withholding tax liability to the issuer by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3.