Michael D. Winterhalter

Bar/Court Admissions
  • Pennsylvania
  • J.D., Columbia Law School, 1995
  • B.S., Carnegie Mellon University, 1992

Mike focuses his practice in the areas of mergers, acquisitions and divestitures, private equity transactions, and also serves as general business counsel to a number of regional and national public and private companies in a variety of industries.  He formerly served as Cohen & Grigsby’s Vice President of Finance & Treasurer,  a member of the Firm’s Shareholders’ Council, the Vice Chair of the Firm’s Corporate & Tax Group and Chair of the Recruiting and Hiring Committee.


Mike has a broad range of transactional experience for public and private companies. His experience includes acquisitions and divestitures of subsidiaries, divisions, and product lines, domestic and international joint ventures, tax-free spin-offs, public and private tender offers and mergers, significant internal reorganizations, private equity transactions, and public and private sales of securities. Mike also regularly counsels clients on day to day legal and business matters.

Mike’s practice includes clients in a variety of industries, including manufacturing, aerospace, energy, defense, chemicals, building products, software, construction and financial services.

Prior to joining Cohen & Grigsby in 2006, Mike was a partner with the Pittsburgh-based international law firm K&L Gates.

Mike is an Ironman triathlete and an avid outdoorsman.