Sec Form 4 Filing - Stone Christopher Isaac @ BOSTON BEER CO INC - 2024-07-31

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Stone Christopher Isaac 2. Issuer Name and Ticker or Trading Symbol BOSTON BEER CO INC [ SAM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O THE BOSTON BEER COMPANY, INC., ONE DESIGN CENTER PLACE, SUITE 850 3. Date of Earliest Transaction (MM/DD/YY) 07/31/2024 (Street) BOSTON, MA02210 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common 07/31/2024 A( 1 ) 782 A $ 0 782 ( 2 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares July 29, 2024 Stock Option $ 290.91 07/31/2024 A( 3 ) 1,590 07/31/2024 07/28/2034 Class A Common 1,590 $ 0 1,590 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Stone Christopher Isaac C/O THE BOSTON BEER COMPANY, INC. ONE DESIGN CENTER PLACE, SUITE 850 BOSTON, MA02210 X Signatures Michael G. Andrews under POA for the benefit of Christopher I. Stone 08/02/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On July 31, 2024, the Issuer granted 782 RSUs to the Reporting Person under the Issuer's Equity Plan for Non-Employee Directors. The grant has an effective date of July 29, 2024. The shares will vest in full on May 14, 2025, provided that the Reporting Person remains a member of the Board of Directors as of that date. ( 2 )The shares reported consist of 782 shares of restricted stock subject to vesting conditions. ( 3 )On July 31, 2024, the Issuer granted 1,590 option shares to the Reporting Person under the Issuer's Equity Plan for Non-Employee Directors. The grant has an effective date of July 29, 2024. The option shares are immediately exercisable, subject to the Company's Director Stock Ownership and Retention Guidelines.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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