John Markley

Columbia Capital LLC (Columbia Capital) is a venture capital firm founded in 1989 by Dave P. Mixer. The firm is headquartered in Alexandria, Virginia.

Millennial Media, Inc. provides mobile advertising solutions. It offers advertisers a suite of solutions that allow them to reach and connect with their target audiences across screens from smart phones, tablets and other mobile devices to PCs with the scale to make significant impact to their business. Its tools and services help developers maximize their advertising revenue, acquire users for their apps and gain insight about their users. Millennial Media was founded by Paul J. Palmieri and Christopher John Brandenburg on May 30, 2006 and is headquartered in Baltimore, MD.

Charter Communications, Inc. provided entertainment, information and communications solutions to residential and commercial customers. The company offered cable video programming services, such as basic and digital video, premium channels, OnDemand, pay-per-view, high definition television, digital video recorder, and online video services; Internet services; Charter.net, which provides multiple e-mail addresses, as well as various entertainment, games, news, wireless backhaul, and sports content; and telephone services. It also provided broadband communications solutions, such as Internet access, data networking, fiber connectivity to cellular towers and office buildings, video entertainment services, and business telephone services under the Charter Business brand name to business and carrier organizations. Charter Communications was founded in 1993 and was headquartered in Stamford, CT.

BroadSoft, Inc. provided software and services that allow mobile, fixed-line, and cable providers to deliver voice and multimedia services. Its products were BroadWorks, BroadCloud and BroadTouch. The BroadWorks software enables service providers to deliver enterprises and individual consumers with a cloud-based offerings, like hosted IP Centrex, video calling, SIP Trunking, unified messaging, call centers and audio conferencing. The company was founded by Michael Tessler and Scott D. Hoffpauir in November 1998 and is headquartered in Gaithersburg, MD.

Telecom Transport Management, Inc. provides backhaul solutions for wireless carriers. It offers fully managed end to end backhaul solution and provides Ethernet backhaul in support of 4G services. The company was founded on July 1, 2003 and is headquartered in Seattle, WA.