Armstrong Teasdale announced the addition of associates John H. Chassaing, Andrea M. Sciarratta and Zachary W. Langrehr to its St. Louis office.

Chassaing was most recently at Greensfelder, Hemker & Gale and has managed hundreds of matters for toxic tort and general litigation clients and has conducted depositions, negotiated in mediations and drafted responsive pleadings and dispositive motions in asbestos-related litigation. He earned his law degree from Southern Illinois University in 2015.

Sciarratta, a member of the litigation practice group, focuses on asbestos litigation and has experience defending premises owners, manufacturers, transportation companies and other businesses in a variety of toxic tort and general liability matters. She earned her law degree from Washington University in 2018.

Langrehr, in the corporate services practice group, concentrates on general corporate and business representation and transactions, mergers and acquisitions, securities, entity formation and structuring and corporate governance. He earned his law degree from Saint Louis University in 2020.

Scott Nading joined Armstrong Teasdale’s Kansas City office as a litigation associate. He earned his law degree from the University of Arkansas in 2020, has managed the motion practice for catastrophic injury litigation cases for a Kansas City law firm and was previously a law clerk for Judge John W. Broomes in the U.S. District Court for the District of Kansas.

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