Berkshire (BRK-B)

=== SEC Form 3 — Statement of Changes in Beneficial Ownership === Document Type: 3 Period of Report: 2026-06-01 --- Issuer --- Name: BERKSHIRE HATHAWAY INC (BRK.A) CIK: 0001067983 --- Reporting Owner --- Name: Chang Charles C CIK: 0002139769 Role: Officer (See Remarks) --- Holdings --- [Holding #1] Security: Class A Common Stock Ownership: I (Indirect) Footnotes: [F1] Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. [F1] Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. [F1] Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. [F1] Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. [F1] Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. [F2] Shares held by a limited liability company controlled by the reporting person and the reporting person's spouse. --- Footnotes (Complete Index) --- F1: Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. F2: Shares held by a limited liability company controlled by the reporting person and the reporting person's spouse. --- Signature --- /s/ /s/ Charles C. Chang (2026-06-10)