would feature The WB and CBS-owned UPN's higher-rated shows mixed with newer series, called The CW Television Network. All but three of Tribune's 19 WB affiliates (including three that were sold off to other companies later that year) became affiliates of The CW on September 18, 2006, through ten-year agreements (the exceptions were in Philadelphia, Seattle and Atlanta, due to The CW affiliating with CBS-owned stations in those markets), though Tribune itself would not exercise an ownership stake in The CW as it did with The WB. In April 2007, Tribune's broadcasting interests were included in the sale of the entire company to Chicago investor Sam Zell, who planned take the publicly traded company private. The deal was completed on December 20, 2007. On December 21, 2007, Tribune and Oak Hill Capital Partners-controlled Local TV, LLC announced plans to collaborate in the formation of a "broadcast management company" (later named The Other Company); its Tribune Interactive division also operated the websites of its stations as part of the partnership. On December 8, 2008, Tribune announced that it would voluntarily restructure its debt obligations, as part of its filing for Chapter 11 bankruptcy protection in the United States Bankruptcy Court. As the company had sufficient funds to do so, Tribune continued to operate its newspaper publishing and broadcasting, and interactive businesses without interruption during the restructuring. On January 1, 2011, Tribune launched the digital broadcast network Antenna TV, a service that features a variety of classic television series, including programming from Sony Pictures Television and D.L. Taffner Entertainment. On May 13, 2013, Tribune announced that it would buy a 50% stake in the This TV digital broadcast network from fellow Chicago-based media company Weigel Broadcasting; Tribune took over operational duties for the network on November 1, 2013. On July 1, 2013, Tribune announced that it would purchase the 19 stations owned by Local TV, LLC outright for $2.725 billion; the purchase expanded the number of Big Three network affiliates in its portfolio from one to 10 (most of Tribune's television stations prior to the purchase had either been independent stations or from 1995 onward, affiliates of networks that have launched since 1986; New Orleans station WGNO (channel 26) – an ABC affiliate – was Tribune's only station affiliated with one of the three pre-1986 networks prior to the purchase), as well as form duopolies involving stations in Denver and St. Louis