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William Stenger | Colliers | St. Louis - Clayton

William Stenger

Senior Vice President

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Professional Summary

Rocky specializes in office brokerage throughout the St. Louis market. With 15 years in the industry, he works with a variety of clients handling both landlord and tenant representation, development, and consulting projects.

Rocky joined Colliers in October 2009. Prior to that, he was a Sales & Leasing broker with Gershman Commercial where he earned the “Rookie of the Year” title. Before Gershman, he was a Market Analyst with Meritage Homes in Southwest Florida where he was involved in land acquisition for planned unit developments.

Rocky is a graduate of Missouri State University in Springfield, MO where he earned his Bachelor of Science degree in Finance and Real Estate. Rocky has participated in numerous charities helping raise funds for Scramble for Kids, Easter Seals Midwest, Mission St. Louis, Children’s Miracle Network, and Big Brother and Big Sisters. He was a “Big” in Fort Myers, Florida.

Rocky and his wife Pam have two sons, Rockwell (3) and Conrad (1), and reside in Des Peres, MO. When Rocky is not working, he enjoys spending time with his family.


  • More than $450 million in leasing transaction volume
  • Over 2 million SF of completed leases
  • More than $80 million in acquisition & disposition experience
  • Named to Colliers St. Louis President Club in 2018 & 2013 for being one of the top three producers
  • Five-time St. Louis Commercial Realtors Heavy Hitters finalist
  • CoStar Power Broker
  • St. Louis Association of Realtors Commercial Division President (2015)
  • SARA Investment Real Estate Spotlight Award for exemplary leasing success, client service, and character


  • Missouri State University, Bachelor of Science, Finance and Real Estate

Memberships & Involvements

  • St. Louis Commercial Realtors
  • Missouri Growth Association Board of Directors
  • Missouri State Alumni Association
  • Urban Land Institute (ULI), Young Leaders


"I have used Rocky on a variety of projects over the years and have recommended him to numerous clients. Rocky has consistently gone above and beyond typical service levels in his efforts to successfully navigate a whole host of complicated issues in multiple markets while delivering excellent results. Rocky is the type of individual I plan on having a long-term business relationship with."
Josiah Cox, Chief Executive Officer at Trumpet Land Services L.L.C.

"Rocky works diligently to manage a property sale from the marketing phase through the many steps involved in closing the sale. He works hard to achieve results and is a good advocate for those he represents."
Mary Ann Cribbin Sewing, Financial Advisor at Saxony Securities, Inc.

"Rocky helped us sell a property that was non "prototypical" and find a client who in acquiring the property, sees an excellent opportunity for their organization. Rocky was able to match up the supply with the demand."
Ronald Bruns, Chief Financial Officer at Society of the Sacred Heart

"While helping us to find office space, I found that Rocky listened to understand our needs, communicated and kept us informed, and worked to research and surface options that met our goals. I certainly felt that the search was in good hands."
Michael Anderson, FACHE, Senior Director of Site Operations at Take Care Health Systems


Service Lines

Capital Markets, Tenant Representation, Landlord Representation

Property Type

Office, Retail, Land

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