Name

  ​ ​ ​

State of
Incorporation
or
Organization

  ​ ​ ​

Percent of Capital
Stock/Equity Units
Owned by
Steel Dynamics, Inc.

  ​ ​ ​

Names Under which Business is
Conducted

​

​

​

​

​

​

​

Aluminum Dynamics, LLC

​

Indiana

​

94.4%

​

​

Mesabi Nugget Delaware, LLC

​

Delaware

​

86%

​

​

New Millennium Building Systems, LLC

​

Indiana

​

100%

​

​

OmniSource, LLC

​

Indiana

​

100%

​

Omni

Roanoke Electric Steel Corporation

​

Indiana

​

100%

​

Steel Dynamics Roanoke Bar Division

SDI Biocarbon Solutions, LLC

​

Delaware

​

75%

​

​

Steel Dynamics Columbus, LLC

​

Indiana

​

100%

​

​

Steel Dynamics Enterprises, Inc.

​

Indiana

​

100%

​

​

Steel Dynamics Heartland, LLC

​

Indiana

​

100%

​

​

Steel Dynamics Sales North America, Inc.

​

Indiana

​

100%

​

​

Steel Dynamics Southwest, LLC

​

Indiana

​

100%

​

​

Steel of West Virginia, Inc.

​

Indiana

​

100%

​

​

STLD Holdings, Inc.

​

Indiana

​

100%

​

​

New Process Steel, LLC

​

Indiana

​

100%

​

​

The Techs Industries, Inc.

​

Indiana

​

100%

​

The Techs

The Techs a Division of Steel

Dynamics, Inc.

United Steel Supply, LLC

​

Texas

​

95%

​

​

Vulcan Threaded Products, Inc.

​

Indiana

​

100%

​

Vulcan Steel Products

CLP Systems