Terence Sumpter List of directors and agents named Terence Sumpter. Found 2 results. TERENCE SUMPTER Registered Address: 1 GILLINGHAM CT OWINGS MILLS MD 21208 Appointed in one company. Go To Profile TERENCE SUMPTER Registered Address: 1 GILLINGHAM CT OWINGS MILLS MD 21117 Appointed in one company. Go To Profile