Armstrong Teasdale Promotes 6 Attorneys, 22 Income Partners to Profit-Sharing Partnership

January 6, 2026 Press Releases

National law firm Armstrong Teasdale LLP has announced the promotion of six attorneys—Counsels Halle Dimar and John Thornton; senior associates Michael Carwin, Rhys Williams and Avila Zepp; and associate Richard Cole—into the firm’s profit-sharing partnership tier. The firm also promoted 22 existing income partners into the profit-sharing tier. Promotions were effective as of January 1, 2026.

Introduced at the beginning of 2025, Armstrong Teasdale’s profit-sharing partnership represents a departure from the traditional two-tier partnership structure common in the legal industry. Designed to broaden pathways to leadership, the tier allows attorneys to share in the firm’s financial success without exposure to losses.

“All of the attorneys being promoted have proven invaluable to the success of Armstrong Teasdale,” said Managing Partner Richard W. Engel, Jr. “The breadth and depth of their experience spans industry sectors, practice areas and geographies. Each attorney is greatly deserving of entering this new tier of partnership, and they are poised to continue driving the success of the firm for years to come.”

About the Attorneys

Halle Dimar (Litigation, St. Louis) focuses on defending health care providers, long-term care providers and pharmacies. She regularly advises on HIPAA issues, physician and employee discipline, subpoenas and child abuse prevention programs.

John Thornton (Litigation, Miami) represents clients in trial and appellate litigation matters, including breach of contract, breach of fiduciary duty, fraud-related claims, conversion, defamation and more. He also has extensive experience as corporate counsel, advising on employment and labor matters, UCC Article 9 matters and other transactions.

Michael Carwin (Intellectual Property, Chicago) is a registered patent attorney and focuses on complex patent, trademark, copyright and trade secrets litigation, having defended several high-dollar-value cases. Michael has been a valued member of many high-stakes trial teams and has successfully represented both plaintiffs and defendants at trial.

Rhys Williams (Corporate Services, St. Louis) represents developers, investors, financial institutions, governmental bodies and other public and private entities in all aspects of real estate transactions. He also advises clients on state and federal regulations governing the legalized marijuana industry.

Avila Zepp (Corporate Services, Miami) is a multilingual immigration attorney with extensive experience in family- and employment-based immigration matters. She counsels clients around the world on immigration strategy and has experience drafting and reviewing filings before a wide array of governmental entities.

Richard Cole (Litigation, Miami) represents businesses and individuals in a wide range of complex litigation matters, including commercial contracts, construction, banking, real estate, defamation and employment, as well as trusts and estates disputes. He has considerable experience in high-stakes and bet-the-company litigation and consistently delivers favorable outcomes for clients, both before and at trial.

The following income partners were also promoted to Armstrong Teasdale’s profit-sharing partnership tier:

Corporate Services