Gregg is CEO of GapSat, an innovative venture that leases or arranges for the lease of entire in-orbit satellites to satellite operators for use at their orbital slots for interim periods of time, generally until the operator launches its own custom-built satellite. Gregg is also president of G3 Global Communications, a satellite consulting firm focused on strategic planning, business development, transactional and regulatory advice. Previously Gregg co-founded and was president of Asia Broadcast Satellite (ABS). He is a former television producer and communications attorney who was the head of satellite services for Cable & Wireless Hong Kong Telecom, Vice President for PanAmSat and Lockheed Martin Corp, and Director of International Policy for the US Department of Commerce, National Telecommunications & Information Administration (NTIA) where he was instrumental in the promotion of private enterprise in space.

Gregg is a founding member and a Director serving since the inception of APSCC in 1994; the Chairman of the Cable and Satellite Broadcast Association of Asia (CASBAA) Satellite Wireless Action Group; a member of the Board of Governors and Secretary of the Pacific Telecommunications Council (PTC); and the Asian Attache for the Global VSAT Forum (GVF).