John Carreyrou

John Carreyrou

Formal First Name

John Carreyrou is an Investigative Reporter at The Wall Street Journal. He has been with the Journal for more than 20 years. During this time, Carreyrou has covered a number of topics, ranging from Islamist terrorism to the pharmaceutical industry. Carreyrou was born in New York and raised in Paris. He currently resides in Brooklyn with his wife and three children. Over the course of his career, he has been based in Brussels, Paris, and New York for the paper.

Professional Experience

Academic History


  • Carreyrou was the first to break the scandal surrounding the failed biomedical startup Theranos and its founder, Stanford-dropout Elizabeth Holmes, in his reporting for The Wall Street Journal. 
  • He is a compelling speaker who discusses the ethical lapses, the credulous media coverage, and the lax oversight that allowed Theranos to achieve a “unicornvaluation of $9 billion, and shares with audiences the lessons that can be learned from its fall.
  • With meticulously researched and detailed reporting, he provides insight into Theranos’s intensely charismatic, secretive, and ambitious founder, and the very real harm that resulted from her false claims. 
  • In his lectures, he tells the riveting story of the biggest corporate fraud since Enron and exposes the ecosystem of investors, journalists, and regulators that allowed it to flourish.
  • His reporting on corruption in the field of spine surgery led to long prison terms for a California hospital owner and a Michigan neurosurgeon. 


  • Earlier in his career, Carreyrou was part of a Journal team that won a Pulitzer Prize for Explanatory Reporting for its coverage of corporate scandals.
  • For his extensive coverage of Theranos, he was awarded the George Polk Award for Financial Reporting, the Gerald Loeb Award for Distinguished Business and Financial Journalism in the category of beat reporting, and the Barlett & Steele Silver Award for Investigative Business Journalism. 
  • In 2015, he won a Pulitzer Prize for Investigative Reporting with several colleagues for a series of articles exposing fraud and abuse in Medicare, the federal health program for the elderly and disabled.