List of 24 Acquired Engineering Companies in Illinois

Name	Sector	Revenue $mlns	M&A Activity			Last 5 Years
Name	Sector	Revenue $mlns	Total	Buy	Sell	Last 5 Years
Material Sciences Corp. Acquired New Star Metals, Inc. 2014-03-20 $139M Elk Grove Village, Illinois, United States website	Engineering	-	2	1	1
Automated Engineering Services Corp. Acquired Amec Foster Wheeler plc 2013-11-06 $29M Naperville, Illinois, United States	Engineering	30	-	-	-
VOA Associates, Inc. Acquired Stantec 2016-05-31 Chicago, Illinois, United States website	Engineering	-	-	-	-
Greeley and Hansen Acquired T.Y. Lin International Group Ltd. 2022-12-21 Chicago, Illinois, United States website	Engineering	-	-	-	-
Richard L Johnson Associates Acquired GMB 2025-10-09 Rockford, Illinois, United States website	Engineering	-	-	-	-
OMEGA Acquired TranSystems 2022-02-02 Lisle, Illinois, United States website	Engineering	-	-	-	-
Sheehan Nagle Hartray Associates Acquired Woolpert 2022-10-19 Chicago, Illinois, United States website	Engineering	-	-	-	-
Schleede-Hampton Associates, Inc. Acquired G2 Consulting Group 2015-06-16 St. Charles, Illinois, United States website	Engineering	-	-	-	-
Mitchell Planning Associates, Inc. Acquired Ross & Baruzzini, Inc. 2016-06-24 Northbrook, Illinois, United States website	Engineering	-	-	-	-
Ambitech Engineering Corp. Acquired Zachry Group, Inc. 2017-03-01 Downers Grove, Illinois, United States website	Engineering	-	-	-	-
St. John - Mittelhauser & Associates, Inc. Acquired Terracon Consultants, Inc. 2019-01-03 Downers Grove, Illinois, United States website	Engineering	-	-	-	-
Nexus Technical Services Corp. Acquired Jensen Hughes 2015-06-08 Oakbrook Terrace, Illinois, United States website	Engineering	-	-	-	-
Lamar Johnson Collaborative Acquired Clayco, Inc. 2018-10-24 Chicago, Illinois, United States website	Engineering	-	-	-	-
Manhard Consulting Acquired Atwell 2025-08-26 Lincolnshire, Illinois, United States website	Engineering	-	-	-	-
Power Engineers Collaborative LLC Acquired Zero6 Energy 2012-05-03 Chicago, Illinois, United States website	Engineering	-	-	-	-
Terra Consulting Group Acquired Vivacity Networks 2021-06-09 Park Ridge, Illinois, United States website	Engineering	-	-	-	-

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