Simpson Thacher is advising Allen & Overy in connection with Allen & Overy and Shearman & Sterling’s planned merger to create a unique global law firm named Allen Overy Shearman Sterling.~~The firm, which will go by A&O Shearman for short, will have approximately 3,900 lawyers and approximately 800 partners across 49 offices. Allen & Overy and Shearman & Sterling have 250 years of combined experience.~~The Simpson Thacher team includes Eric Swedenburg, Anthony Vernace, Jihyun Chung and Jacob Kornman (M&A); Jeannine McSweeney (ECEB); Jonathan Goldstein and Scott Grundei (Tax); and Peter Guryan and Daniel Owsley (Antitrust).