The Firm represented CHA Consulting, Inc. and First Reserve in the acquisition of CHA by H.I.G. Capital from First Reserve. The transaction closed on January 19, 2024. Financial terms of the transaction were not disclosed.~~CHA is an innovative, full-service engineering, design, consulting, and program management firm providing a wide range of technology-enhanced services to public, private, and institutional clients. CHA is focused on delivering sustainable, integrated solutions to the world's most challenging infrastructure projects across utilities, transportation, water, and other critical commercial and industrial end-markets.~~First Reserve is a leading global private equity firm focused on investing across diversified energy, utility, and general industrial end-markets. Founded in 1983, First Reserve has nearly 40 years of industry insight and has raised more than $33 billion of aggregate capital since inception. Its investment and operational experience have been built from over 750 transactions, including platform investments and add-on acquisitions, on six continents.~~The Simpson Thacher team included: Michael T. Holick, Ben Kloss, Malik Ladhani, Izaak Lustgarten and Elias B. Rosenblatt (M&A); Michael Vernace, Anita Wu and Kayley Ingalls (Credit); Andrew Purcell and Edward Grais (Tax); Larry Moss, Alisa Tschorke and Sara Mazurek (ECEB); Andrew Kofsky (Labor); Kelly Karapetyan (Antitrust); Lori Lesser, Corina Holland and Sarika Pandrangi (IP); and Dennis Loiacono (Real Estate).