Poppy Alexander

Constantine Cannon


Poppy Alexander is a partner at Constantine Cannon, where she represents whistleblowers and government entities in qui tam lawsuits, as well as under the various agency whistleblower programs. Poppy’s practice focuses on issues of international corruption and financial misconduct, with a specialty in the Foreign Corrupt Practices Act and money laundering cases. She writes and speaks regularly about emerging topics in financial fraud, including sanctions violations, SPACs, and cryptocurrency. Poppy’s prior matters have included representing a whistleblower who returned over $360 million to the U.S. Treasury from an antitrust conspiracy to overcharge the U.S. military for oil and gas contracts, representing the first-ever successful whistleblower under the Department of Transportation’s whistleblower program, and successfully litigating multiple False Claims Act cases against healthcare companies overcharging Medicare for the services provided. Poppy graduated from Harvard Law School, where she was the co-Editor-in-Chief of the Harvard Civil Rights-Civil Liberties Law Review, and clerked for the Sixth Circuit.

Posts by Poppy Alexander

Transnational Whistleblower Litigation

American corporate fraud has long captured the international imagination. Ask people around the globe whether they have heard of Enron, Lehman Brothers, or the Madoff Ponzi scheme, and it’s likely the answer will be yes. The scale and consequences of these three cases alone often lead people to assume that the biggest frauds of our…

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