CFO — Diego Reynoso: The CFO is stepping down but an internal successor (Interim CFO) has been appointed to ensure an orderly transition, indicating a planned succession rather than a sudden loss of leadership.

Results of Operations and Financial Condition On July 23, 2026, The Boston Beer Company, Inc. disclosed financial information for the second quarter of 2026 in an earnings release, a copy of which is set forth in the attached Exhibit 99. The information in this Form 8-K and the Exhibit 99 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that secti…

Other Events. As reported in the Quarterly Report on Form 10-Q filed by the Company on April 30, 2026, on April 6, 2026 a jury in the United States District Court for the Northern District of Illinois (the “Court”) returned a verdict awarding damages against the Company in its supplier dispute with Ardagh Metal Packaging USA Corp. (“Ardagh”). As a result of the verdict, during the first quarter of 2026 the Company recorded a non-recurring pre-tax litigation expense of $175.5 million and relat…

Changes in Control of Registrant. 2026 Annual Meeting of Stockholders The Company held its 2026 Annual Meeting of Stockholders on May 27, 2026, at which quorums of 68.0% of Class A Stockholders and 100% of Class B Stockholders were present and acting throughout. The proposals submitted by the Board of Directors to the Stockholders for action and the results of the voting on each proposal are indicated below. Item 1 . The Class A Stockholders elected the following three (3) Class A Directors,…

Other Events. On May 15, 2026, the Company entered into a 10b5-1 plan to repurchase up to $25 million of the Company’s Class A Common Stock during the period commencing June 29, 2026 and ending September 25, 2026. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. The Boston Beer Company, Inc. Date: May 19, 2026 By: /s/ Jim Koch Name: C. James Koch Ti…

Results of Operations and Financial Condition On April 30, 2026, The Boston Beer Company, Inc. disclosed financial information for the first quarter of 2026 in an earnings release, a copy of which is set forth in the attached Exhibit 99. The information in this Form 8-K and the Exhibit 99 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that secti…

Other Events. As previously disclosed, including most recently in the Form 10-K filed by the Company on February 24, 2026, Ardagh Metal Packaging USA Corp. (“Ardagh”) filed an action against the Company in the United States District Court for the Northern District of Illinois (the “Court”) on December 31, 2022, alleging, among other claims, that the Company had failed or would fail to purchase contractual minimum volumes of certain aluminum beverage can containers from 2021 to 2025. On April…

Director — Michael Spillane: Mr. Spillane will not stand for re-election as a Director and will retire from the Board.

Other Events. On March 10, 2026, the Company entered into a 10b5-1 plan to repurchase up to $25 million of the Company’s Class A Common Stock during the period commencing March 30, 2026 and ending June 26, 2026. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. The Boston Beer Company, Inc. Date: March 16, 2026 By: /s/ C. James Koch Name: C. James Ko…

Results of Operations and Financial Condition On February 24, 2026, The Boston Beer Company, Inc. disclosed financial information for the fourth quarter of 2025 in an earnings release, a copy of which is set forth in the attached Exhibit 99. The information in this Form 8-K and the Exhibit 99 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that s…

President and CEO — Michael Spillane: Mr. Spillane stepped down as President and CEO, with Mr. Koch reassuming the position.

Chief Marketing Officer — Lesya Lysyj: Ms. Lysyj stepped down from her position as Chief Marketing Officer with a separation agreement.

Other Events. On November 7, 2025, the Company entered into a 10b5-1 plan to repurchase up to $25 million of the Company’s Class A Common Stock during the period commencing December 29, 2025 and ending March 27, 2026. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. The Boston Beer Company, Inc. Date: November 12, 2025 By: /s/ C. James Koch Name: C.…

Chief People Officer — Carolyn L. O’Boyle: The Chief People Officer is stepping down with a named internal successor and a transition period, indicating an orderly succession rather than a sudden loss of executive leadership.

Results of Operations and Financial Condition On October 23, 2025, The Boston Beer Company, Inc. disclosed financial information for the third quarter of 2025 in an earnings release, a copy of which is set forth in the attached Exhibit 99. The information in this Form 8-K and the Exhibit 99 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that sec…

Chief Operating Officer — Philip A. Hodges: Philip A. Hodges was promoted to Chief Operating Officer with expanded responsibilities and a significant equity package.

Chief Operating Officer — Philip A. Hodges: Philip A. Hodges was promoted to Chief Operating Officer with expanded responsibilities and significant equity awards.

CFO — Diego Reynoso: The filing discloses a compensatory stock award for retention purposes rather than a change in management status or departure.

Other Events. On August 11, 2025, the Company entered into a 10b5-1 plan to repurchase up to $50 million of the Company’s Class A Common Stock during the period commencing September 29, 2025 and ending December 26, 2025. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. The Boston Beer Company, Inc. Date: August 12, 2025 By: /s/ Jim Koch Name: C. Jam…

CEO — Michael Spillane: The CEO is stepping down for personal reasons with a named, high-profile successor (the Founder/Chairman) and a structured transition period, indicating an orderly succession rather than a sudden loss of leadership.

Results of Operations and Financial Condition On July 24, 2025, The Boston Beer Company, Inc. disclosed financial information for the second quarter of 2025 in an earnings release, a copy of which is set forth in the attached Exhibit 99. The information in this Form 8-K and the Exhibit 99 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that secti…

Other Events. At a meeting held on May 13, 2025, the Board of Directors, acting on the recommendation of the Nominating/Governance Committee, appointed the following independent Directors to the respective committees of the Board: Audit Committee : Cynthia, L. Swanson (Chair), Joseph H. Jordan, Meghan V. Joyce Compensation Committee : Joseph H. Jordan (Chair), Julio N. Nemeth, Christopher I. “Biz” Stone, Cynthia L. Swanson Nominating/Governance Committee : Meghan V. Joyce (Chair), Julio Nemet…

Results of Operations and Financial Condition On April 24, 2025, The Boston Beer Company, Inc. disclosed financial information for the first quarter of 2025 in an earnings release, a copy of which is set forth in the attached Exhibit 99. The information in this Form 8-K and the Exhibit 99 attached hereto is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that secti…

Director — Jean-Michel Valette: The filing discloses a director's planned retirement at the end of their term without any disagreement or sudden departure, which is a routine board succession event.

Other Events. On March 13, 2025, the Company entered into a 10b5-1 plan to repurchase up to $50 million of the Company’s Class A Common Stock during the period commencing March 31, 2025 and ending June 27, 2025. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. The Boston Beer Company, Inc. Date: March 13, 2025 By: /s/ Michael Spillane Name: Michael…