Salas O’Brien, an Investment of CSC, Receives a Minority Equity Investment

June 4, 2024

Los Angeles, CA (June 4, 2024) – Caltius Structured Capital (“Caltius”) is pleased to announce that Salas O’Brien (the “Company”), a leading employee-owned engineering and technical services firm has received a minority equity investment. Blackstone (NYSE:BX) and Salas O’Brien announced a partnership where Blackstone Tactical Opportunities and affiliated funds (collectively “Blackstone”) have made a strategic structured equity investment to help accelerate the Company’s continued expansion within the fast-growing architectural, engineering, and construction (“AEC”) market. Salas O’Brien will continue to be majority owned by its team members and Caltius will continue to own a minority equity position alongside Blackstone.

“We are thankful to Caltius Structured Capital and the State of Wisconsin Investment Board for their early belief in Salas O’Brien and their continued support and commitment to our organization” said Darin Anderson, Chairman and CEO of Salas O’Brien. “As more companies and institutions pursue their decarbonization, energy transition, and critical infrastructure goals, Salas O’Brien’s expertise has never been more needed in the world. Blackstone’s investment helps us gain greater access to talent, enhances our technology resources, and helps us better serve more clients. The fact that we can do all of this while retaining our employee ownership approach and in partnership with the incredible professionals at Blackstone and Caltius is an amazing validation of our team’s hard work—and positions us to get even better.”

“We are incredibly proud of the team at Salas O’Brien for their disciplined execution, engaging culture, and resilient, differentiated, high-quality AEC solutions that have helped form one of the top AEC firms in the world.” Michael Kane, Managing Director at Caltius added, “We are excited to continue to partner with the world-class team at Salas O’Brien as they accelerate their growth by leveraging Blackstone’s global scale, resources, and operational expertise to better serve the Company’s customers.”

About Salas O’Brien

Founded in 1975, Salas O’Brien is an employee-owned engineering and technical services firm focused on advancing the human experience through the built environment. Our team is engineered for impact™, helping clients achieve critical goals, advancing our team members through growth and opportunity, and operating at the center of important global issues, including sustainability and decarbonization. We are a top firm as ranked by Engineering News-Record and Consulting-Specifying Engineer, and we have appeared for the past eleven years on the Inc. 5000 list of North America’s fastest-growing private companies.