STLD

SEC source: 0001022671-17-000043 · edgar.xml · nonDerivative · entry 1

BATES JOHN C · CIK 0001027286 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,939

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000042 · edgar.xml · nonDerivative · entry 1

Seaman Bradley S · CIK 0001597069 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,357

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000041 · edgar.xml · nonDerivative · entry 1

MARCUCCILLI JAMES C · CIK 0001321944 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,842

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000040 · edgar.xml · nonDerivative · entry 1

KOLB JURGEN DR · CIK 0001195958 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,185

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000038 · edgar.xml · nonDerivative · entry 1

BUSSE KEITH E · CIK 0001195948 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,004,965

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000039 · edgar.xml · nonDerivative · entry 1

DOLAN TRACI M · CIK 0001251631 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,393

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000037 · edgar.xml · nonDerivative · entry 1

Cornew Kenneth W. · CIK 0001482379 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,965

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000036 · edgar.xml · nonDerivative · entry 1

BYRNE FRANK D · CIK 0001216806 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,557

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000035 · edgar.xml · nonDerivative · entry 1

Shaheen Gabriel · CIK 0001411393 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,803

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000034 · edgar.xml · nonDerivative · entry 1

TEETS RICHARD P JR · CIK 0001195950 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,042,961

F1 · shares: Represents the number of additional shares of common stock, underlying deferred stock units (DSUs), issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11 and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000029 · edgar.xml · nonDerivative · entry 1

TEETS RICHARD P JR · CIK 0001195950 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,042,939

F1 · kind: The reporting person contributed Steel Dynamics Inc. common stock to an exchange fund in exchange for shares of the exchange fund. The Steel Dynamics Inc. common stock was valued at $35.64 per share for the purpose of determining the number of shares of the exchange fund issuable to the reporting person.

F1 · price: The reporting person contributed Steel Dynamics Inc. common stock to an exchange fund in exchange for shares of the exchange fund. The Steel Dynamics Inc. common stock was valued at $35.64 per share for the purpose of determining the number of shares of the exchange fund issuable to the reporting person.

SEC source: 0001022671-17-000025 · edgar.xml · nonDerivative · entry 2

MILLETT MARK D · CIK 0001195949 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,087,183

F2 · shares: Disposition to Issuer: Shares withheld by Issuer in payment of reporting person's withholding tax liability in connection with such person's receipt or vesting of an equity security, and either approved in advance by Compensation Committee or mandated by the express terms of the Plan, and exempt from Section 16(b) of Exchange Act in accordance with Exchange Act Rule 16b-3(e).

SEC source: 0001022671-17-000025 · edgar.xml · nonDerivative · entry 1

MILLETT MARK D · CIK 0001195949 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,120,944

F1 · shares: Acquisition from Issuer: Shares awarded under Long-Term Incentive Program adopted by Compensation Committee composed of three or more independent non-employee directors pursuant to the Company's 2015 Equity Incentive Plan approved by Compensation Committee and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3(d).

SEC source: 0001022671-17-000028 · edgar.xml · nonDerivative · entry 2

Graham Christopher A · CIK 0001607477 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,353

F2 · shares: Disposition to Issuer: Shares withheld by Issuer in payment of reporting person's withholding tax liability in connection with such person's receipt or vesting of an equity security, and either approved in advance by Compensation Committee or mandated by the express terms of the Plan, and exempt from Section 16(b) of Exchange Act in accordance with Exchange Act Rule 16b-3(e).

SEC source: 0001022671-17-000028 · edgar.xml · nonDerivative · entry 1

Graham Christopher A · CIK 0001607477 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,046

F1 · shares: Acquisition from Issuer: Shares awarded under Long-Term Incentive Program adopted by Compensation Committee composed of three or more independent non-employee directors pursuant to the Company's 2015 Equity Incentive Plan approved by Compensation Committee and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3(d).

SEC source: 0001022671-17-000027 · edgar.xml · nonDerivative · entry 2

RINN RUSSELL B · CIK 0001186730 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 137,199

F2 · shares: Disposition to Issuer: Shares withheld by Issuer in payment of reporting person's withholding tax liability in connection with such person's receipt or vesting of an equity security, and either approved in advance by Compensation Committee or mandated by the express terms of the Plan, and exempt from Section 16(b) of Exchange Act in accordance with Exchange Act Rule 16b-3(e).

SEC source: 0001022671-17-000027 · edgar.xml · nonDerivative · entry 1

RINN RUSSELL B · CIK 0001186730 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,331

F1 · shares: Acquisition from Issuer: Shares awarded under Long-Term Incentive Program adopted by Compensation Committee composed of three or more independent non-employee directors pursuant to the Company's 2015 Equity Incentive Plan approved by Compensation Committee and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3(d).

SEC source: 0001022671-17-000026 · edgar.xml · nonDerivative · entry 2

Wagler Theresa E · CIK 0001301637 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 279,733

F2 · shares: Disposition to Issuer: Shares withheld by Issuer in payment of reporting person's withholding tax liability in connection with such person's receipt or vesting of an equity security, and either approved in advance by Compensation Committee or mandated by the express terms of the Plan, and exempt from Section 16(b) of Exchange Act in accordance with Exchange Act Rule 16b-3(e).

SEC source: 0001022671-17-000026 · edgar.xml · nonDerivative · entry 1

Wagler Theresa E · CIK 0001301637 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 297,107

F1 · shares: Acquisition from Issuer: Shares awarded under Long-Term Incentive Program adopted by Compensation Committee composed of three or more independent non-employee directors pursuant to the Company's 2015 Equity Incentive Plan approved by Compensation Committee and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3(d).

SEC source: 0001022671-17-000018 · edgar.xml · nonDerivative · entry 1

BATES JOHN C · CIK 0001027286 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,765

F1 · shares: Represents the number of shares of common stock underlying deferred stock units (DSUs) issued to the reporting person in connection with a portion of 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 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000024 · edgar.xml · derivative · entry 1

Pushis Glenn · CIK 0001301742 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 15,000 shares

Expires 2027-02-17

F1 · security: Stock Appreciation Rights (SAR) Award Agreement approved on February 17, 2017, by the Compensation Committee of the Company's Board of Directors, consisting of five non-employee independent directors, exempt pursuant to Rule 16b-3d.

F2 · derivative.exercise_price: Reflects the fair market value of underlying common stock on the grant date.

F3 · derivative.exercise_date: One-third (5,000) of the SARs are exercisable on or after 2/17/18, an additional 417 of the SARs become exercisable each month from 3/17/18 through 2/17/20. The balance of 409 of the SARs become exercisable on 3/17/20. This SARs award expires on 2/17/2027.

SEC source: 0001022671-17-000023 · edgar.xml · derivative · entry 1

SCHNEIDER BARRY · CIK 0001397059 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 15,000 shares

Expires 2027-02-17

F1 · security: Stock Appreciation Rights (SAR) Award Agreement approved on February 17, 2017, by the Compensation Committee of the Company's Board of Directors, consisting of five non-employee independent directors, exempt pursuant to Rule 16b-3d.

F2 · derivative.exercise_price: Reflects the fair market value of underlying common stock on the grant date.

F3 · derivative.exercise_date: One-third (5,000) of the SARs are exercisable on or after 2/17/18, an additional 417 of the SARs become exercisable each month from 3/17/18 through 2/17/20. The balance of 409 of the SARs become exercisable on 3/17/20. This SARs award expires on 2/17/2027.

SEC source: 0001022671-17-000022 · edgar.xml · derivative · entry 1

Graham Christopher A · CIK 0001607477 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 15,000 shares

Expires 2027-02-17

F1 · security: Stock Appreciation Rights (SAR) Award Agreement approved on February 17, 2017, by the Compensation Committee of the Company's Board of Directors, consisting of five non-employee independent directors, exempt pursuant to Rule 16b-3d.

F2 · derivative.exercise_price: Reflects the fair market value of underlying common stock on the grant date.

F3 · derivative.exercise_date: One-third (5,000) of the SARs are exercisable on or after 2/17/18, an additional 417 of the SARs become exercisable each month from 3/17/18 through 2/17/20. The balance of 409 of the SARs become exercisable on 3/17/20. This SARs award expires on 2/17/2027.

SEC source: 0001022671-17-000021 · edgar.xml · derivative · entry 1

Wagler Theresa E · CIK 0001301637 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common Stock · 30,000 shares

Expires 2027-02-17

F1 · security: Stock Appreciation Rights (SAR) Award Agreement approved on February 17, 2017, by the Compensation Committee of the Company's Board of Directors, consisting of five non-employee independent directors, exempt pursuant to Rule 16b-3d.

F2 · derivative.exercise_price: Reflects the fair market value of underlying common stock on the grant date.

F3 · derivative.exercise_date: One-third (10,000) of the SARs are exercisable on or after 2/17/18, an additional 834 of the SARs become exercisable each month from 3/17/18 through 2/17/20. The balance of 818 of the SARs become exercisable on 3/17/20. This SARs award expires on 2/17/2027.

SEC source: 0001022671-17-000020 · edgar.xml · derivative · entry 1

RINN RUSSELL B · CIK 0001186730 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires 2027-02-17

F1 · security: Stock Appreciation Rights (SAR) Award Agreement approved on February 17, 2017, by the Compensation Committee of the Company's Board of Directors, consisting of five non-employee independent directors, exempt pursuant to Rule 16b-3d.

F2 · derivative.exercise_price: Reflects the fair market value of underlying common stock on the grant date.

F3 · derivative.exercise_date: One-third (8,333) of the SARs are exercisable on or after 2/17/18, an additional 695 of the SARs become exercisable each month from 3/17/18 through 2/17/20. The balance of 682 of the SARs become exercisable on 3/17/20. This SARs award expires on 2/17/2027.

SEC source: 0001022671-17-000019 · edgar.xml · derivative · entry 1

MILLETT MARK D · CIK 0001195949 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires 2027-02-17

F1 · security: Stock Appreciation Rights (SAR) Award Agreement approved on February 17, 2017, by the Compensation Committee of the Company's Board of Directors, consisting of five non-employee independent directors, exempt pursuant to Rule 16b-3d.

F2 · derivative.exercise_price: Reflects the fair market value of underlying common stock on the grant date.

F3 · derivative.exercise_date: One-third (33,333) of the SARs are exercisable on or after 2/17/18, an additional 2,778 of the SARs become exercisable each month from 3/17/18 through 2/17/20. The balance of 2773 of the SARs become exercisable on 3/17/20. This SARs award expires on 2/17/2027

SEC source: 0001022671-17-000017 · edgar.xml · nonDerivative · entry 2

Graham Christopher A · CIK 0001607477 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,535

F2 · shares: Payment of withholding tax liability by issuer's withholding of securities incident to the reporting person's receipt or vesting of a security in accordance with Rule 16b-3.

SEC source: 0001022671-17-000017 · edgar.xml · nonDerivative · entry 1

Graham Christopher A · CIK 0001607477 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,144

F1 · shares: Shares awarded pursuant to 2013 Executive Incentive Compensation Plan approved by Board of Directors and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3 thereunder. One-third of shares granted vest on date of grant, one-third vest one year from grant, and final one-third vest two years from grant.

SEC source: 0001022671-17-000016 · edgar.xml · nonDerivative · entry 2

SCHNEIDER BARRY · CIK 0001397059 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,303

F2 · shares: Payment of withholding tax liability by issuer's withholding of securities incident to the reporting person's receipt or vesting of a security in accordance with Rule 16b-3.

SEC source: 0001022671-17-000016 · edgar.xml · nonDerivative · entry 1

SCHNEIDER BARRY · CIK 0001397059 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,521

F1 · shares: Shares awarded pursuant to 2013 Executive Incentive Compensation Plan approved by Board of Directors and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3 thereunder. One-third of shares granted vest on date of grant, one-third vest one year from grant, and final one-third vest two years from grant.

SEC source: 0001022671-17-000015 · edgar.xml · nonDerivative · entry 2

Pushis Glenn · CIK 0001301742 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,486

F2 · shares: Payment of withholding tax liability by issuer's withholding of securities incident to the reporting person's receipt or vesting of a security in accordance with Rule 16b-3.

SEC source: 0001022671-17-000015 · edgar.xml · nonDerivative · entry 1

Pushis Glenn · CIK 0001301742 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,081

F1 · shares: Shares awarded pursuant to 2013 Executive Incentive Compensation Plan approved by Board of Directors and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3 thereunder. One-third of shares granted vest on date of grant, one-third vest one year from grant, and final one-third vest two years from grant.

SEC source: 0001022671-17-000014 · edgar.xml · nonDerivative · entry 2

RINN RUSSELL B · CIK 0001186730 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,414

F2 · shares: Payment of withholding tax liability by issuer's withholding of securities incident to the reporting person's receipt or vesting of a security in accordance with Rule 16b-3.

SEC source: 0001022671-17-000014 · edgar.xml · nonDerivative · entry 1

RINN RUSSELL B · CIK 0001186730 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,462

F1 · shares: Shares awarded pursuant to 2013 Executive Incentive Compensation Plan approved by Board of Directors and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3 thereunder. One-third of shares granted vest on date of grant, one-third vest one year from grant, and final one-third vest two years from grant.

SEC source: 0001022671-17-000013 · edgar.xml · nonDerivative · entry 2

Wagler Theresa E · CIK 0001301637 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 245,544

F2 · shares: Payment of withholding tax liability by issuer's withholding of securities incident to the reporting person's receipt or vesting of a security in accordance with Rule 16b-3.

SEC source: 0001022671-17-000013 · edgar.xml · nonDerivative · entry 1

Wagler Theresa E · CIK 0001301637 · Executive Vice President & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,710

F1 · shares: Shares awarded pursuant to 2013 Executive Incentive Compensation Plan approved by Board of Directors and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3 thereunder. One-third of shares granted vest on date of grant, one-third vest one year from grant, and final one-third vest two years from grant.

SEC source: 0001022671-17-000012 · edgar.xml · nonDerivative · entry 2

MILLETT MARK D · CIK 0001195949 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,022,194

F2 · shares: Payment of withholding tax liability by issuer's withholding of securities incident to the reporting person's receipt or vesting of a security in accordance with Rule 16b-3.

SEC source: 0001022671-17-000012 · edgar.xml · nonDerivative · entry 1

MILLETT MARK D · CIK 0001195949 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,035,641

F1 · shares: Shares awarded pursuant to 2013 Executive Incentive Compensation Plan approved by Board of Directors and Stockholders and exempt from Section 16(b) of Exchange Act pursuant to Rule 16b-3 thereunder. One-third of shares granted vest on date of grant, one-third vest one year from grant, and final one-third vest two years from grant.

SEC source: 0001022671-17-000011 · edgar.xml · nonDerivative · entry 1

Shaheen Gabriel · CIK 0001411393 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,631

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000010 · edgar.xml · nonDerivative · entry 1

TEETS RICHARD P JR · CIK 0001195950 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,183,234

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000008 · edgar.xml · nonDerivative · entry 1

Seaman Bradley S · CIK 0001597069 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,274

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000007 · edgar.xml · nonDerivative · entry 1

MARCUCCILLI JAMES C · CIK 0001321944 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,658

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000006 · edgar.xml · nonDerivative · entry 1

KOLB JURGEN DR · CIK 0001195958 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,163

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000005 · edgar.xml · nonDerivative · entry 1

DOLAN TRACI M · CIK 0001251631 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,266

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000004 · edgar.xml · nonDerivative · entry 1

Cornew Kenneth W. · CIK 0001482379 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,943

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000003 · edgar.xml · nonDerivative · entry 1

BYRNE FRANK D · CIK 0001216806 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,390

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000002 · edgar.xml · nonDerivative · entry 1

BUSSE KEITH E · CIK 0001195948 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,004,943

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-17-000001 · edgar.xml · nonDerivative · entry 1

BATES JOHN C · CIK 0001027286 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,163

F1 · shares: Represents the number of additional shares of common stock underlying deferred stock units (DSUs) issued to the reporting person as a dividend equivalent on existing DSUs, in connection with this person's retainer as a director under the Steel Dynamics, Inc. 2015 Equity Incentive Plan (the "Plan"). This transaction is exempt from both the reporting requirements of Section 16(a), including Rule 16a-11, and the provisions of Section 16(b), by virtue of this dividend reinvestment feature of the Plan and the Company's existing Dividend Reinvestment Plan, as well as being exempt from Section 16(b) independently by virtue of Rule 16b-3(d)(1) and (3).

F2 · shares: 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 · balance_after: Includes shares resulting from reinvestment of dividends on any underlying DSUs included in this total.

SEC source: 0001022671-16-000056 · edgar.xml · nonDerivative · entry 1

MILLETT MARK D · CIK 0001195949 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,005,768

SEC source: 0001022671-16-000055 · edgar.xml · nonDerivative · entry 1

BYRNE FRANK D · CIK 0001216806 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,243