Donald L Sigler Jr List of directors and agents named Donald L Sigler Jr. Found 2 results. JR. DONALD L. SIGLER Registered Address: 818 6TH AVE. BRUNSWICK MD 21716 Appointed in one company. Go To Profile DONALD L SIGLER JR Registered Address: 818 6TH AV BRUNSWICH MD 21716 Appointed in one company. Go To Profile