X0609 4 2026-05-27 false 0000949870 BOSTON BEER CO INC SAM 0001550860 Fisher Cynthia A false C/O THE BOSTON BEER COMPANY ONE DESIGN CENTER PLACE, SUITE 850 BOSTON MA 02210 true false false false false Class A Common 2026-05-27 4 A false 358.00 0.00 A 4399.00 D Class A Common 122923.00 I By Foundation managed by Reporting Person Class A Common 33248.00 I By LLC managed by Reporting Person Class A Common 23486.00 I By spouse as custodian for children under UGTMA Class A Common 20537.00 I By LLC managed by Reporting Person Class A Common 3656.00 I By adult children. Reporting Person disclaims beneficial ownership Class A Common 2532.00 I As trustee in trust for children May 27, 2026 Stock Option 181.63 2026-05-27 4 A false 691.00 0.00 A 2026-05-27 2036-05-25 Class A Common 691.00 691.00 D On May 27, 2026, the Issuer granted 358 RSUs to the Reporting Person under the Issuer's Equity Plan for Non-Employee Directors. The shares will vest in full on May 12, 2027, provided that the non-employee Director remains a member of the Board of Directors as of that date. The shares reported include 358 shares of restricted stock subject to vesting conditions. The shares are held by a limited liability company managed by the Reporting Person. The Reporting Person expressly disclaims beneficial ownership of the securities except to the extent of her pecuniary interest therein. The shares are held by an LLC managed by the Reporting Person and owned by Trusts established for the benefit of the Reporting Person's children and the Reporting Person's spouse's children. The Reporting Person is the Trustee or Co-Trustee for each Trust. On May 27, 2026, the Issuer granted 691 option shares to the Reporting Person under the Issuer's Equity Plan for Non-Employee Directors. The option shares are immediately exercisable, subject to the Company's Director Stock Ownership and Retention Guidelines. Michael G. Andrews under POA for the benefit of Cynthia A. Fisher 2026-05-28