Byron S. Kalogerou is the founder of the Firm’s Life Science Industry Group and the senior attorney in the Boston Corporate Practice. He focuses his practice on domestic and cross-border mergers and acquisitions, finance, and joint ventures and alliances. He has substantial on-the-ground experience structuring mergers, acquisitions, divestitures and joint ventures on six continents. Byron has extensive industry background in the life science, industrial and manufacturing sectors. He also acts as outside general counsel to a number of companies.

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  • Represented Straumann AG, a global leader in tooth replacement solutions, in its acquisition of ClearCorrect, LLC, a leading manufacturer of clear aligners, for $150 million.
  • Represented Anvil, LLC, a leading North American manufacturer and supplier of products that connect, hang and support piping systems, in various acquisitions, including Flexhead Industries, Sprinkflex, Basic-PSA and Megawatt Machine.
  • Represented Take 5 Media Group, a leading consumer information aggregation and advertising company, in the sale of its business to Advantage Solutions, a leading North American provider of business solutions to consumer goods manufacturers and retailers.

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  • The Legal 500 United States 2012 to 2018
  • Acritas Stars 2019, listed among independently rated lawyers
  • LMG Life Sciences, Life Science Star 2016, 2018


  • American Bar Association, Committee on Mergers and Acquisitions, co-chair, Task Force on Legal Project Management


Vermont Law School, JD, 1986
Harvard Business School, Advanced Management Program Certificate, 2001
Dartmouth College, BA, 1983
Phillips Exeter Academy, 1979


Byron S. Kalogerou

Insights & Events / Media

Special Report / December 9, 2019

Shanghai, China / McDermott Event / November 12, 2019

Medical Product Outsourcing / September 6, 2019

Innovations in Legal Project Management / October 2018

Legal News / July 2, 2018

Boston, Massachusetts / McDermott Event / June 6, 2018

Boston, Massachusetts / Speaking Engagements / June 4-7, 2018

Denver, Colorado / Speaking Engagements / April 23, 2018

Orlando, Florida / Speaking Engagements / April 13, 2018

Deal Points (ABA Mergers & Acquisitions Committee) / Fall 2017

Cambridge, Massachusetts / McDermott Event / October 4, 2017

International News / April 2017

San Francisco, California / McDermott Event / January 10, 2017

Acquisition International (UK) / August 4, 2016

Tokyo, Japan / Diversity Event / October 22, 2014