EXHIBIT 21

SUBSIDIARIES OF THE REGISTRANT

Following is a list of the subsidiaries of the Company⁽¹⁾:

Name of Subsidiary	Jurisdiction of Incorporation
CMP Display Systems, Inc.	California
Composite Structures, LLC	Delaware
Ducommun AeroStructures, Inc.	Delaware
Ducommun AeroStructures Mexico, LLC	Delaware
Ducommun AeroStructures New York, Inc.	New York
Ducommun (England) LTD	England
Ducommun LaBarge Technologies, Inc.	Arizona
Ducommun LaBarge Technologies, Inc.	Delaware
Ducommun Technologies (Thailand) Ltd.	Thailand
LaBarge/STC, Inc.	Texas
LaBarge Acquisition Company, Inc.	Missouri
Lightning Diversion Systems, LLC	Delaware
LS Holdings Company, LLC	Delaware

(1) As of December 31, 2017.