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Brian J. Massengill

Brian J. Massengill

T +1 312 701 7268
F +1 312 706 8741
T +1 202 506 2355
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Securities Investigations: Internal, Civil and Criminal

Securities Investigations: Internal, Civil and Criminal

Current Issues in Internal Corporate Investigations

Brian Massengill focuses his practice on the intersection of litigation with accounting and finance issues.  He is the co-leader of the firm’s Professional Liability practice group.

Brian brings his background as a Certified Public Accountant, including eight years with a national accounting firm, to bear on his legal work.  His practice focuses on the defense of accounting firms and he has represented firms in a variety of matters including SEC and PCAOB investigations, securities class actions, arbitrations and state accountancy board proceedings.

Brian’s combined legal and accounting experience also enables him to serve clients in a variety of other contexts.  He has represented companies in disputes arising from purchases and sales of businesses, including purchase price (post-closing adjustment) disputes, and suits alleging breaches of representations and warranties.  He also has represented companies in SEC and other regulatory investigations, and contract and other disputes involving complex causation and damages issues.  As part of his litigation practice, Brian has worked extensively with experts in the areas of auditing, accounting, causation and damages.

Prior to joining Mayer Brown in 1996, he was Law Clerk to The Honorable Frank H. Easterbrook, US Court of Appeals for the Seventh Circuit.
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