Public Announcements
ACI - Missouri Chapter announces Kristen Freeman as Executive Director
ST LOUIS—May 12, 2026—The Missouri Chapter of the American Concrete Institute (ACI Missouri) today announced Kristen Freeman as its next Executive Director. Freeman will succeed Karin O’Brien, PE, LEED AP, WEDG, who departs after seven years of serving the organization to join Terracon.

Freeman brings extensive experience in the concrete industry. She currently serves with the Concrete Promotional Group of Greater Kansas City (CPG), where she has been actively involved in promoting concrete construction and industry engagement. She also serves as Executive Director of the ACI Kansas Chapter and has held numerous leadership roles within the chapter, including Board Member, President, and committee leadership positions supporting certification, communications, and outreach.
Freeman received her Bachelor of Science in Geology from the University of Wisconsin–Oshkosh and her Master of Science in Geology from the New Mexico Institute of Mining and Technology. She began her career in petrography and has developed a strong technical foundation, complemented by broad experience in association leadership and operations within the concrete industry. She is skilled in both the technical and organizational aspects of the field, bringing a well-rounded perspective to her new role.
“We are thrilled to welcome Kristen to ACI Missouri.” said ACI Missouri President Jim Solari. “Her dedication to the industry, collaborative leadership style, and deep understanding of our members’ needs will be a tremendous asset to the chapter and the concrete community.”
“I am honored to join ACI Missouri,” said Freeman. “I look forward to building on the chapter’s strong legacy while enhancing how we serve the concrete community.”
Freeman will continue her work with CPG and the ACI Kansas Chapter while also leading ACI Missouri, further strengthening regional collaboration and impact across the Midwest concrete industry.
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ABOUT ACI MISSOURI
The Missouri Chapter of the American Concrete Institute is dedicated to furthering engineering and technical education, scientific investigation, research, and development of standards for the design and construction of concrete structures.
ACI Missouri supports students, engineers, contractors, and material suppliers through certification programs, seminars, scholarships, and partnerships across the concrete industry. To learn more or to join today visit acimissouri.org.