X0306 5 2016-12-31 0 0 0000812348 CENTURY BANCORP INC CNBKA 0001246201 SLOANE MARSHALL M 400 MYSTIC AVENUE MEDFORD MA 02155 1 1 401(k) Company Stock Fund 362.2152 D Class A Common 11895.358 D Class A Common 224 I (Mms & Bjs Fbo Charles S. M. Sloane) Class A Common 388.14 I Mms & Bjs Fbo Austin Westgate Sloane Class A Common 5603 I Mms & Bjs Fbo Joshua Benjamin Kay Class A Common 388.14 I Mms & Bjs Fbo Kensington Arden Sloane Class A Common 5324 I Mms & Bjs Fbo Rachel Sloane Kay Class A Common 388.14 I Mms & Bjs Fbo Tabor Forrester Sloane Class A Common 3710 I Mms & Bjs Fbo Tallen Kendall Sloane Class A Common 180 I Mms & Bjs Trustees Of Children Of Jgs Class A Common 2500 I Owned By Wife Barbara J. Sloane Class B Common 1720341 D Class B Common 1500 I Owned By Wife Barbara J. Sloane Class A Common 304 I MMS & BJS Trust FBO Jacob George Sloane Class A Common 350 I MMS & BJS TR for MMS II /s/ William P. Hornby, Attorney-In-Fact 2017-02-13