Thomas Richard Johnson

Call Now, Inc. operates and manages Retama Park Racetrack, a horse racetrack in Selma, Texas. The company operates through its subsidiary, Retama Entertainment Group, Inc. Its operational activities at Retama Park include, food and beverage outlets that include a turf and field club, fine dining, a sports bar and concession stands, regulatory responsibilities with the Texas Racing Commission and legislation from the Texas Legislature. The company has changed it name from Phone One International, Inc. to Call Now, Inc. in December 1994. Call Now was founded on September 24, 1990 and is headquartered in Selma, TX.

Penson Worldwide, Inc. is a provider of a broad range of critical securities and futures processing infrastructure products and services to the global financial services industry. Its products and services include securities and futures clearing and execution, financing and cash management technology and other related offerings, and provide tools and services to support trading in multiple markets, asset classes and currencies. Penson Worldwide was founded by Phil A. Pendergraft and Daniel P. Son in 1995 and is headquartered in Dallas, TX.