X0306 4 2016-01-15 0 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 0 1 0 0 Vice President of Brewing Class A Common 2016-01-15 4 A 0 144 121.15 A 3099 D The shares were purchased pursuant to the Issuer's Employee Equity Incentive Plan on January 15, 2016, with an effective grant date of January 1, 2016. Under this plan, tenured employees may purchase restricted shares at a discounted price. These restricted shares 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. The first installment vests one year from grant date and the final installment vests five years from grant date. These shares have no expiration date. The shares reported include 437 shares of restricted stock subject to vesting conditions. Kathleen H. Wade under POA for the benefit of David Grinnell 2016-01-19