X0306 4 2018-01-01 false 0000949870 BOSTON BEER CO INC SAM 0001421530 Grinnell David L. C/O THE BOSTON BEER COMPANY, INC. ONE DESIGN CENTER PLACE, SUITE 850 BOSTON MA 02210 false true false false Vice President of Brewing Class A Common 2018-01-01 4 A false 654.00 0.00 A 3552.00 D The shares reported include 942 shares of restricted stock subject to vesting conditions. Restricted shares granted pursuant to the Issuer's Employee Equity Incentive Plan generally vest in five equal installments over a five year period, provided that the Reporting Person remains employed by the Issuer as of the applicable vesting date. A total of 151 shares vested on the Reporting Date. Michael G. Andrews under POA for the benefit of David L. Grinnell 2018-01-02