Simpson Thacher & Bartlett LLP

Simpson Thacher & Bartlett LLP remains active on large, closely scrutinised merger reviews across the chemicals, pharmaceuticals, finance, media and entertainment, energy and software sectors. The team is frequently instructed on transactions that involve parallel review in the US and Europe, working closely with colleagues in London and Brussels on transatlantic filings, while also handling the contentious and investigative issues that can arise alongside clearance strategy. Leadership of the practice is shared between Peter Guryan in New York, alongside Sara Razi and John Terzaken in Washington DC. Guryan advises corporates and financial sponsors on both civil and criminal antitrust matters connected to M&A activity, while Razi draws on combined private practice and government experience to represent clients in investigations before the DOJ, FTC and state attorneys general. Terzaken brings enforcement-side experience to government investigations and related litigation across a broad range of sectors, including financial services, pharmaceuticals, manufacturing and energy. Other notable individual include ‘rising antitrust star’ Preston Miller, who has extensive experience obtaining regulatory clearances from domestic and international competition authorities, and Karen Kazmerzak, praised for her ’creative mind with incisive commercial business sense’ on complex transactions before the FTC and DOJ. All attorneys based in Washington DC unless otherwise stated.