David J. Keefe

Atlantic Broadband (Delmar) LLC operates cable video systems. The company offers traditional cable video programming, high-speed data services, and other advanced video related broadband services. The company was established in 2003 and is headquartered in Quincy, MA.

Horizon Telecom International LLC is an acquisition vehicle founded in 1996. The private company is based in Curitiba, Brazil. and has subsidiaries in Netherlands. The Brazilian company's description is limited to being an acquisition vehicle.

National Cable Satellite Corp. owns and operates cable television networks. It provides congressional sessions, white house press briefings and speeches, British house commons sessions, and other political and public affairs programs. The company was founded by Brian P. Lamb on March 19, 1979 and is headquartered in Washington, DC.

Atlantic Broadband Group LLC operates as a holding company with interests in providing cable and Internet access services. The company is headquartered in Quincy, MA.

CableSystems International, Inc. is an acquisition holding private company. The company is based in Phoenix, AZ.

Atlantic Broadband Finance LLC provides television, internet and phone services. It offers premium channels, programming, broadband, digital video recorders, pay-per-view, cable television and telephony services. The company was founded by Edward T. Holleran Jr. and David J. Keefe in 2003 and is headquartered in Quincy, MA.