Citing conflicts that kept him from growing his practice as he envisioned, the Philadelphia-based former head of Buchanan Ingersoll & Rooney’s white-collar defense, compliance and investigations practice has made a move to Armstrong Teasdale.

Michael Engle joined Midwest-born Armstrong Teasdale, effective Tuesday, after less than 18 months at Buchanan. Along with him, Ashley Shapiro, who was counsel at Buchanan, joined Armstrong Teasdale as a partner.