BERKSHIRE HATHAWAY INC (BRK-B) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-04 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: BERKSHIRE HATHAWAY INC (BRK.A) CIK: 0001067983 --- Reporting Owner --- Name: Abel Gregory E. CIK: 0001646348 Role: Director, Officer (See Remarks) --- Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $725,210.19 Shares Owned After: 229 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #2] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $725,995.00 Shares Owned After: 230 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #3] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $725,999.99 Shares Owned After: 231 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #4] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $726,079.01 Shares Owned After: 232 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #5] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $726,407.57 Shares Owned After: 233 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #6] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $726,994.76 Shares Owned After: 234 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #7] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +2 | Price: $727,185.00 Shares Owned After: 236 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #8] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $727,453.25 Shares Owned After: 237 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #9] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +2 | Price: $727,530.26 Shares Owned After: 239 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #10] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $729,000.00 Shares Owned After: 240 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #11] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $730,145.00 Shares Owned After: 241 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #12] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $730,700.00 Shares Owned After: 242 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #13] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $730,707.01 Shares Owned After: 243 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #14] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $731,349.99 Shares Owned After: 244 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #15] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +2 | Price: $732,000.00 Shares Owned After: 246 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #16] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $732,500.00 Shares Owned After: 247 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #17] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $733,100.00 Shares Owned After: 248 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Transaction #18] Security: Class A Common Stock Date: 2026-03-04 | Code: P (Open market purchase) Shares: +1 | Price: $733,300.00 Shares Owned After: 249 | Ownership: I (Indirect) | Nature: By Gregory E. Abel Revocable Trust Footnotes: [F2] 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] 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] 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] 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] 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] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. --- Holdings --- [Holding #1] Security: Class B Common Stock Ownership: I (Indirect) Footnotes: [F1] By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. [Holding #2] Security: Class B Common Stock Ownership: I (Indirect) --- Footnotes (Complete Index) --- F1: By Gregory E. Abel Revocable Trust - Shares held of record by Gregory E. Abel, trustee of the Gregory E. Abel Revocable Trust, for the benefit of his family. F2: 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. --- Signature --- /s/ /s/ Gregory E. Abel (2026-03-04)