The US firm has hired leading antitrust litigator and former federal prosecutor John Terzaken as a partner in its litigation department in Washington DC. Mr Terzaken has had a distinguished career in both the Department of Justice and in private practice. He was co-head of the global competition practice and head of the DC investigations and litigation practice at Allen & Overy. He represents domestic and international clients in government enforcement and private litigation of cartel and other alleged antitrust violations, market sector investigations and antitrust compliance, encompassing all major industry sectors.  'I am very pleased to join Simpson Thacher,' he said. 'I look forward to advising clients on high-stakes disputes and sensitive investigations as part of the firm’s terrific antitrust and government investigations team.'

Global cartel investigations

From 2010 to 2012, Mr Terzaken held a leading position in the DOJ’s Antitrust Division as Director of Criminal Enforcement, where he oversaw the division’s criminal enforcement nationwide. His responsibilities included presiding over some of the largest global cartel investigations ever undertaken by the DOJ. He also served as the division’s chief liaison with domestic and international law enforcement authorities, as well as the Financial Fraud Coordinator for inter-agency prosecutions and investigations. 

Further depth

'John will be an excellent addition to our premier antitrust practice,' said Bill Dougherty, chairman of Simpson Thacher’s executive committee. 'His broad range of experience adds further depth to our ability to assist clients with their most complex antitrust matters. We are delighted to welcome him to the firm.'