David MacIsaac

David MacIsaac is Of Counsel at BFA. His practice focuses on investigating, analyzing and prosecuting direct and derivative breach of fiduciary duty actions on behalf of stockholders. He is actively pursuing confidential books and records requests on behalf of a number of institutional and individual clients.
 
For nearly a decade, David has built a track record of success in the Delaware Chancery Court. He has successfully developed and prosecuted numerous high-profile actions against boards of directors and officers for breaches of fiduciary duty, including Nantahala Capital Partners L.P. v. QAD Inc. et al., a- direct action that successfully enjoined a merger on basis of inadequate disclosures and settled for $65 million; Macomb County Employees’ Retirement System v. Kenneth McBride et al. (Stamps.com) a derivative action that settled for $30 million plus corporate governance reforms; and In re Versum Materials, Inc. Stockholder Litigation, a direct action that resulted in the revocation of a poison pill. David also played a key role in In re Pattern Energy Group Inc. Stockholder Litigation, a direct action that successful challenged a $6.1 billion merger transaction, and settled for $100 million. 
David has also litigated several derivative actions related to the opioid crisis, including Ontario Provincial Council of Carpenters’ Pension Trust Fund et al. v. Walton et al. (Walmart Inc.), a derivative action that settled for $123 million plus corporate governance reforms; and In re McKesson Corporation Derivative Litigation, a derivative action that settled for $175 million plus corporate governance reforms. Other significant representations include City of Monroe Employees’ Retirement System v. Rupert Murdoch et al., a derivative action arising from sexual harassment at Fox News that settled for $90 million plus corporate governance reforms; and In re Yahoo, Inc. Derivative Litigation, which arose from the largest data breach in U.S. history and settled for $29 million.
 
Prior to joining the plaintiffs’ bar, David served as an associate at a prominent global law firm, where he litigated a wide array of complex matters.