Lyndon Sommer

Lyndon Sommer, Registered CPA (Ill.), M.Acct., J.D., is a Shareholder of Sandberg Phoenix and member of the firm’s Business Litigation and Products Liability practice groups. He focuses his work in the areas of commercial litigation, professional liability, employment and product liability litigation.

Lyndon specializes in professional negligence cases involving Certified Public Accountants, who he has successfully defended at trial and on appeal. Lyndon has defended accountants in cases pending in Missouri and Illinois state courts. In addition, he has successfully defended accountants in federal court. Lyndon has defended accounting professionals in more than 150 cases. He has also defended attorneys, architects, engineers and financial advisors.

Lyndon is also experienced in representing shareholders of closely held companies involved in shareholder disputes, and has spent a substantial amount of time representing shareholders in trial courts and arguing several appeals arising out of shareholder litigation. These appeals have been argued in both state and federal courts.

In addition, Lyndon is an accomplished employment litigator. Most of the cases he handles involve non-competition provisions in employment contracts.

Having tried cases in federal and state courts in Missouri and Illinois, Lyndon has received jury verdicts on behalf of both plaintiffs and defendants. He has also argued multiple cases before the United States Courts of Appeal for the Seventh and Eighth Circuits, as well as the Illinois Appellate Court and Missouri Court of Appeals.