BOSTON BEER CO INC — Director's Dealing 2026

Mar 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BOSTON BEER CO INC (SAM)
CIK: 0000949870
Period of Report: 2026-03-01

Reporting Person: Reynoso Diego (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-03-01	Class A Common	F	622.00	$226.78	Disposed	20642.00	Direct
2026-03-01	Class A Common	A	5734.00	$0.00	Acquired	26376.00	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-03-01	October 31, 2023 Stock Option	$333.50	A	2429.00	Acquired	2033-10-30	Class A Common (9717.00)	Direct

Footnotes

F1: The Issuer net withheld the vesting of a percentage of shares to satisfy the tax obligations of the Reporting Person flowing from the vesting of Restricted Stock Units ("RSUs"). The Reporting Person had a total of 2,116 RSUs vest on March 1, 2026.

F2: Represents grants of Restricted Stock Units ("RSUs") under the Issuer's Restated Employee Equity Incentive Plan ("EEIP"). The details of these grants were disclosed in a Current Report on Form 8-K filed by the Issuer on February 17, 2026.

F3: The shares reported include 23,097 shares of restricted stock subject to vesting conditions.

F4: The Time-Based Stock Option was granted pursuant to the Issuer's EEIP on October 31, 2023. The shares will vest in four equal installments on March 1 in the years 2024-2027 provided that the Reporting Person remains employed by the Issuer on the applicable vesting dates, and subject to accelerated vesting in certain situations.