Edgar Filing: EDGERLEY PAUL B

Ownership Submission

FORM 5

	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
	Form 3 Holdings Reported
	Form 4 Transactions Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person ^*

EDGERLEY PAUL B

2. Issuer Name and Ticker or Trading Symbol
STEEL DYNAMICS INC [STLD]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

__X__ Director	_____ 10% Owner
_____ Officer (give title below)	_____ Other (specify below)

(Last)

(First)

(Middle)

BAIN CAPITAL,Â 111 HUNTINGTON AVENUE

3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2011

(Street)

BOSTON,Â MAÂ 02199

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Reporting
(check applicable line)
_X_ Form Filed by One Reporting Person
___ Form Filed by More than One Reporting Person

(City)

(State)

(Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)	4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
				Amount	(A) or (D)	Price

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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SEC 2270 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security
(Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code
(Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned at End of Issuer's Fiscal Year
(Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Deferred Stock Units

$ 0

06/30/2011

33 ⁽¹⁾

06/01/2012

Common Stock

$ 0

5,297 ⁽²⁾

Deferred Stock Units

$ 0

09/30/2011

48 ⁽¹⁾

06/01/2012

Common Stock

$ 0

5,345 ⁽²⁾

Deferred Stock Units

$ 0

12/30/2011

36 ⁽¹⁾

06/01/2012

Common Stock

$ 0

5,381 ⁽²⁾

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
EDGERLEY PAUL B BAIN CAPITAL 111 HUNTINGTON AVENUE BOSTON,Â MAÂ 02199	Â X	Â	Â	Â

Signatures

Paul B. Edgerley		02/15/2012
^**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Exempt award, pursuant to registrant's 2006 Equity Incentive Plan, of 33 additional Deferred Stock Units (DSUs) on June 30, an additional 48 on September 30 and an additional 36 on December 31, 2011, determined by dividing the dollar amount of deemed dividends on each of the foregoing dates, issued in respect of reporting person's underlying 5,264 DSUs originally awarded June 1, 2011 and previously reported on Form 4 on June 3, 2011, divided by the closing price of Issuer's common stock on the day preceding each dividend record date.
(2)	Totals shown on each line include the same 5,264 originally issued DSUs plus the cumulative additional DSUs issued in respect of the deemed dividend following each dividend date.

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