X0202 5 2005-12-31 0 0 0 0000812348 CENTURY BANCORP INC CNBKA 0001246238 SLOANE BARRY R 400 MYSTIC AVENUE MEDFORD MA 02155 1 1 0 1 Executive Vice President Executive Vice President Class A Common 2005-05-19 5 A 0 0.0432 27.7700 A 3111.0432 D Class A Common 2005-08-18 5 A 0 0.0353 34.2700 A 3111.0785 D Class A Common 2005-11-18 5 A 0 0.0384 31.5200 A 3111.1169 D Class A Common 2005-05-19 5 A 0 0.0864 27.7700 A 40.0864 I FBO Marshall M. Sloane II Class A Common 2005-08-18 5 A 0 0.0706 34.2700 A 40.1570 I FBO Marshall M. Sloane II Class A Common 2005-11-18 5 A 0 0.0768 31.5200 A 40.2338 I FBO Marshall M. Sloane II Class A Common 2005-05-19 5 A 0 0.2204 27.7700 A 71.2204 I Owned by spouse Candace Lapidus Sloane Class A Common 2005-08-18 5 A 0 0.1795 34.2700 A 71.3999 I Owned by spouse Candace Lapidus Sloane Class A Common 2005-11-18 5 A 0 0.1958 31.5200 A 71.5957 I Owned by spouse Candace Lapidus Sloane Century Bancorp Class A 31.8300 2004-09-17 2014-09-17 Class A Common 7000.0000 7000.0000 D By: Paul V. Cusick, Jr., Attorney-In-Fact 2006-02-10