STEEL DYNAMICS INC — Director's Dealing 2015

May 27, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: STEEL DYNAMICS INC (STLD)
CIK: 0001022671
Period of Report: 2015-05-22

Reporting Person: MARCUCCILLI JAMES C (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-22	Common Stock	A	496	—	Acquired	52587	Direct

Footnotes

F1: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan. This transaction is exempt from the provisions of Section 16(b), by virtue of Rule 16b-3(d)(1) and (3).

F2: Reportable as directly owned shares of common stock, rather than as a derivative security in Table II, because any and all underlying DSUs are payable, at such time as they are to be settled, solely in shares of common stock. (See Lincoln National Corp. (March 20, 1992) (Q.3).

F3: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.