X0306 4 2019-07-29 false 0000949870 BOSTON BEER CO INC SAM 0001778852 Calagione Samuel A. III C/O THE BOSTON BEER COMPANY 1 DESIGN CENTER PLACE, SUITE 850 BOSTON MA 02210 false true false false Founder & Brewer, Dogfish Head Class A Common 2019-07-29 4 A false 129.00 0.00 A 27165.00 I By Trust for the Reporting Person's minor son Class A Common 2019-07-29 4 A false 129.00 0.00 A 27165.00 I By Trust for the Reporting Person's minor daughter Class A Common 2019-07-29 4 A false 556.00 0.00 A 116706.00 I By Dynasty Trust Class A Common 2019-07-29 4 A false 778.00 0.00 A 138305.00 I By Family Trust Class A Common 2019-07-29 4 A false 604.00 0.00 A 94951.00 I By Dogfish East of the Mississippi, LP Class A Common 25000.00 I By The Beer & Benevolence Foundation On May 8, 2019, the Issuer entered into certain agreements to acquire all of the equity interests held by certain private entities in Dogfish Head Brewery (the "Former DFH Equityholders"). On July 3, 2019, the Issuer issued shares of restricted Class A Common Stock to the Former DFH Equityholders in connection with the closing of the transaction. On July 29, 2019, the Issuer issued additional restricted shares to the Former DFH Equityholders pursuant to the agreements, after taking into account a post-closing cash-related adjustment. Michael G. Andrews under POA for the benefit of Samuel A. Calagione, III 2019-07-29