Jeffrey S. Rosenberg (Jeff)

• Won dismissal of a securities class action, which was affirmed on appeal, and two parallel derivative actions claiming Marriott made false and misleading statements concerning its susceptibility to cyberattacks.
• Won dismissal of a securities class action alleging Progenity (now Biora), a biotechnology developer and provider of testing products, made false statements in its offering documents under Section 11.
• Won dismissal of a securities class action assailing Northwest Biotherapeutics' public statements about the development of its products.
• Represented four members of the evenly divided board of directors of Aerojet Rocketdyne in an expedited trial before the Delaware Court of Chancery arising from a proxy contest initiated by the company’s executive chairman. The clients prevailed in the proxy contest after the court issued its post-trial opinion.
• Defending BlackRock in suit in the Virgin Islands brought by shareholders of two public companies alleging that BlackRock fraudulently drove down the share price of the companies.
• Defended Bank of America against FDIC lawsuit seeking alleged underpayment to the Federal Deposit Insurance Fund of more than $1 billion and asserting counterclaim under the Administrative Procedure Act seeking to invalidate the underlying FDIC regulation.
• Represented Kraft Heinz in negotiating successful resolution of accounting fraud claims brought by the SEC with no criminal component, substantially reduced financial penalty, and non-scienter-based charges.
• Defended the largest shareholder and certain current and former directors of an aerospace company in derivative litigation brought by minority shareholders and directors in the Delaware Court of Chancery
• Obtained complete arbitration victory, including all costs, for asset management company regarding its significant equity stake in a hedge fund whose principals sought to forcibly transfer that stake away from client.
• Obtained complete arbitration victory for major multinational company in intra- and inter-corporate dispute involving significant subsidiary.
• Represented petitioners in appraisal litigation involving a biotechnology company in the Delaware Court of Chancery resulting in favorable settlement.
• Defended a biotechnology company in a series of shareholder derivative lawsuits challenging the decisions of company directors and executives, leading to favorable settlement.
• Successfully litigated motion to sever and stay indicted healthcare fraud prosecution based on client’s physical incapacity, leading to complete dismissal of indictment.

Jeffrey S. Rosenberg is a trial litigator whose practice focuses on complex business and commercial litigation, with emphasis on securities, shareholder, and Delaware litigation.  He defends a broad spectrum of commercial litigation and has extensive experience representing companies and their officers and directors in shareholder disputes such as securities class actions, derivative lawsuits alleging breaches of fiduciary duties, challenges to mergers and acquisitions, and books and records demands.  He also advises boards of directors and their committees in conducting internal investigations and evaluating and responding to shareholder demands.  He further represents companies in litigation and enforcement actions involving the government, principally in the securities and financial sectors. 

Mr. Rosenberg has been recognized in the Lawdragon 500 Leading Litigators in America for his work in "Business & Commercial Litigation, esp. Delaware" and in Best Lawyers: Ones to Watch in multiple practice areas.  He regularly publishes on developments in Delaware law and has co-authored treatise chapters on securities, derivative, and Delaware litigation.    

Mr. Rosenberg is a cum laude graduate of the Georgetown University Law Center.  He received a Bachelor of Arts degree, with honors, from Johns Hopkins University with a double major in Classics and Philosophy.  While an undergraduate, he concurrently completed and graduated with a Master of Arts degree in Classics.

While pursuing his law degree, Mr. Rosenberg worked as a consultant providing homeland security, critical infrastructure protection, incident and emergency management, strategic and operational policy and planning, and enterprise risk management advice to public and private sector clients.