Prior to working in the media, sports, entertainment and telecommunications industries, Ratner was a corporate lawyer with the law firm of Sullivan & Cromwell from 1984 to 1987.
He was involved in numerous financings and strategic transactions, including, the spin-offs of MSG in 2010 and AMC Networks in 2011,[6] both now standalone, public companies.
From 2009 to 2014, Ratner served as President and Chief Executive Officer of the Madison Square Garden Company,[7] whose business included, Madison Square Garden, The Theatre at Madison Square Garden, Radio City Music Hall, the Beacon Theatre, the Chicago Theater, the Wang Theater in Boston, the Forum in Inglewood, California, MSG Network, MSG Plus, Fuse, the New York Knickerbockers, the New York Rangers, the New York Liberty, the Hartford Wolfpack, the Radio City Christmas Spectacular and the Rockettes.
[12] In May 2016, Hank Ratner became an investment partner with Tom Rogers, the chairman of TIVO, in WinView, a startup whose app lets sports fans compete for cash prizes and interact while watching games on live TV.
Since its inception in 2006, the Garden of Dreams Foundation has provided experiences for almost 300,000 children and their families, with access and interaction with events and celebrities at MSG and its properties.