Don Calabria

GMV Holdings LLC provides internet publishing services. The private company is based in Jupiter, FL and has subsidiaries in Canada.

Massive Dynamics, Inc. engaged in the development, design, patent, manufacture, and marketing of 3D imaging and Z-axis products for the consumer computer peripherals market. The company was founded by Alan Collier, Donald J. Calabria and Frank J. Hariton on March 15, 2011 and was headquartered in Rochester, NY.

GMV Wireless, Inc. provides wireless internet services. The company was founded by Don Calabria on November 3, 2008 and is located in Encino, CA.

Gemini Consulting Group, Inc. provides management consulting services. Its services range from management consulting, to the development of day surgery centers and hospitals. The company was founded by James B. McCarthy and is headquartered in Oak Brook, IL.

T-Mobile USA, Inc. engages in the provision of wireless voice, messaging, and data services. It offers different plans for phones and tablets. The company was founded by John W. Stanton in 1994 and is headquartered in Bellevue, WA.

Part of TESSCO Technologies, Inc., Wireless Solutions, Inc. provides wireless communications services.

TrinTel Communications, Inc. provides wireless phone network services. The private company is based in Irving, TX.