Acknowledged in two 2026 St. Louis Business Journal rankings, TWM has earned a spot among the region’s fastest-growing private companies and largest engineering firms.

TWM ranked No. 47 on the 2026 Fast 50, which recognizes the 50 fastest-growing private companies in the St. Louis region. The ranking reflects 28.97% revenue growth from 2023 to 2025, with TWM reporting $36.24 million in 2025 revenue.

“Behind every number is a great team,” said Kelly Ralston, TWM’s Director of Business Development, who attended the 2026 Fast 50 awards ceremony at City Winery St. Louis and accepted the recognition on behalf of the firm. “It’s an exciting time to be part of TWM, and there’s a lot of energy behind what we’re building.”

TWM was also listed among the largest engineering firms in the St. Louis region, ranking No. 13 based on 2025 local engineering billings. The annual ranking highlights engineering firms serving the St. Louis metropolitan area and surrounding counties in Missouri and Illinois.

“Both of these rankings reflect how far TWM has come, but we’re just as focused on where we’re going,” shared TWM Chief Operating Officer, Derek Twente, PLS, EI. “We want to keep expanding on our strengths, give our employee-owners room to grow, and pursue initiatives that make sense for TWM’s expertise and vision.”

Robert DeConcini, PE, President of TWM, added, “Our steady growth and achievements are a direct reflection of TWM’s entire team. After 80 years, we know the importance of making thoughtful investments, maintaining trusted partnerships, and delivering the service and value our clients expect.”

As TWM continues to grow and look toward the future, it remains grounded in the values and principles that have guided the firm for generations: investing in great people and innovative technologies, supporting strong client relationships, and opening doors to new opportunities. That common purpose will continue to carry TWM forward in the years ahead.

About TWM, Inc.
Celebrating 80 years in business in 2026, TWM is a 100% ESOP-owned company. From humble beginnings in Belleville, IL in 1946, TWM has grown to be the successful firm it is today, with corporate headquarters in Swansea, IL, and nine additional offices throughout the Midwest and Southeast. The firm provides innovative and comprehensive solutions in five primary disciplines: Survey/Geospatial Services, Transportation, Land Development, Structural, and Water Infrastructure. Built on a foundation of strong relationships and technical excellence, TWM delivers on its mission of Exceptional Service. Nothing Less.