| Vanguard Capital Management | Common Stock | 471,311,773 | 6.6% | — | Mar 31, 2026 | Apr 29, 2026 |
| The Vanguard Group | Common Stock | 0 | 0% | — | Mar 13, 2026 | Mar 26, 2026 |
| The Vanguard Group | Common Stock | 651,058,822 | 8.9% | — | Dec 31, 2025 | Jan 30, 2026 |
| Central States of Omaha Companies, Inc. | Common Stock, par value $0.01 per share | 3,920,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| General Star National Insurance Company | Common Stock, par value $0.01 per share | 1,960,000 | 0% | — | Sep 30, 2025 | Nov 14, 2025 |
| General Reinsurance Corporation | Common Stock, par value $0.01 per share | 21,000,000 | 0.3% | — | Sep 30, 2025 | Nov 14, 2025 |
| General Re Corporation | Common Stock, par value $0.01 per share | 21,000,000 | 0.3% | — | Sep 30, 2025 | Nov 14, 2025 |
| GEICO Indemnity Company | Common Stock, par value $0.01 per share | 81,200,000 | 1.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| Government Employees Insurance Company | Common Stock, par value $0.01 per share | 229,600,000 | 3.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| GEICO Corporation | Common Stock, par value $0.01 per share | 310,800,000 | 4.2% | — | Sep 30, 2025 | Nov 14, 2025 |
| Mount Vernon Fire Insurance Company | Common Stock, par value $0.01 per share | 7,000,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| General Star Indemnity Company | Common Stock, par value $0.01 per share | 5,040,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| First Berkshire Life Insurance Company | Common Stock, par value $0.01 per share | 145,500 | 0% | — | Sep 30, 2025 | Nov 14, 2025 |
| United States Liability Insurance Company | Common Stock, par value $0.01 per share | 9,800,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| National Indemnity Company | Common Stock, par value $0.01 per share | 450,665,500 | 6.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| U.S. Investment Corporation | Common Stock, par value $0.01 per share | 9,800,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| Berkshire Hathaway Specialty Insurance Company | Common Stock, par value $0.01 per share | 1,400,000 | 0% | — | Sep 30, 2025 | Nov 14, 2025 |
| National Indemnity Company of Mid-America | Common Stock, par value $0.01 per share | 2,380,000 | 0% | — | Sep 30, 2025 | Nov 14, 2025 |
| National Indemnity Company of the South | Common Stock, par value $0.01 per share | 2,800,000 | 0% | — | Sep 30, 2025 | Nov 14, 2025 |
| Columbia Insurance Company | Common Stock, par value $0.01 per share | 82,684,512 | 1.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| Cypress Insurance Company | Common Stock, par value $0.01 per share | 2,100,000 | 0% | — | Sep 30, 2025 | Nov 14, 2025 |
| Oak River Insurance Company | Common Stock, par value $0.01 per share | 4,200,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| BH Finance LLC | Common Stock, par value $0.01 per share | 82,684,512 | 1.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| Berkshire Hathaway Homestate Insurance Company | Common Stock, par value $0.01 per share | 11,900,000 | 0.2% | — | Sep 30, 2025 | Nov 14, 2025 |
| Central States Indemnity Company of Omaha | Common Stock, par value $0.01 per share | 3,920,000 | 0.1% | — | Sep 30, 2025 | Nov 14, 2025 |
| Berkshire Hathaway Inc. | Common Stock, par value $0.01 per share | 568,070,012 | 7.8% | — | Sep 30, 2025 | Nov 14, 2025 |
| Warren E. Buffett | Common Stock, par value $0.01 per share | 568,070,012 | 7.8% | — | Sep 30, 2025 | Nov 14, 2025 |
| Central States of Omaha Companies, Inc. | Common Stock, par value $0.01 per share | 3,920,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| General Star National Insurance Company | Common Stock, par value $0.01 per share | 1,960,000 | 0% | — | Dec 31, 2024 | Feb 14, 2025 |
| General Reinsurance Corporation | Common Stock, par value $0.01 per share | 21,000,000 | 0.3% | — | Dec 31, 2024 | Feb 14, 2025 |
| General Re Corporation | Common Stock, par value $0.01 per share | 21,000,000 | 0.3% | — | Dec 31, 2024 | Feb 14, 2025 |
| GEICO Indemnity Company | Common Stock, par value $0.01 per share | 81,200,000 | 1.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| Government Employees Insurance Company | Common Stock, par value $0.01 per share | 229,600,000 | 3% | — | Dec 31, 2024 | Feb 14, 2025 |
| GEICO Corporation | Common Stock, par value $0.01 per share | 310,800,000 | 4.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| General Star Indemnity Company | Common Stock, par value $0.01 per share | 5,040,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| Mount Vernon Fire Insurance Company | Common Stock, par value $0.01 per share | 7,000,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| National Fire & Marine Insurance Company | Common Stock, par value $0.01 per share | 11,062,607 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| First Berkshire Life Insurance Company | Common Stock, par value $0.01 per share | 145,500 | 0% | — | Dec 31, 2024 | Feb 14, 2025 |
| United States Liability Insurance Company | Common Stock, par value $0.01 per share | 9,800,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| U.S. Investment Corporation | Common Stock, par value $0.01 per share | 9,800,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| Berkshire Hathaway Specialty Insurance Company | Common Stock, par value $0.01 per share | 1,400,000 | 0% | — | Dec 31, 2024 | Feb 14, 2025 |
| National Indemnity Company of Mid-America | Common Stock, par value $0.01 per share | 2,380,000 | 0% | — | Dec 31, 2024 | Feb 14, 2025 |
| National Indemnity Company of the South | Common Stock, par value $0.01 per share | 2,800,000 | 0% | — | Dec 31, 2024 | Feb 14, 2025 |
| National Indemnity Company | Common Stock, par value $0.01 per share | 460,850,980 | 6.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| NRG America Holding Company | Common Stock, par value $0.01 per share | 5,600,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| Columbia Insurance Company | Common Stock, par value $0.01 per share | 145,600,000 | 1.9% | — | Dec 31, 2024 | Feb 14, 2025 |
| Finial Reinsurance Company | Common Stock, par value $0.01 per share | 10,185,480 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| Finial Holdings Inc. | Common Stock, par value $0.01 per share | 10,185,480 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| National Liability & Fire Insurance Company | Common Stock, par value $0.01 per share | 28,000,000 | 0.4% | — | Dec 31, 2024 | Feb 14, 2025 |
| Cypress Insurance Company | Common Stock, par value $0.01 per share | 2,100,000 | 0% | — | Dec 31, 2024 | Feb 14, 2025 |
| Oak River Insurance Company | Common Stock, par value $0.01 per share | 4,200,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| BH Finance LLC | Common Stock, par value $0.01 per share | 140,000,000 | 1.8% | — | Dec 31, 2024 | Feb 14, 2025 |
| Berkshire Hathaway Homestate Insurance Company | Common Stock, par value $0.01 per share | 11,900,000 | 0.2% | — | Dec 31, 2024 | Feb 14, 2025 |
| Central States Indemnity Company of Omaha | Common Stock, par value $0.01 per share | 3,920,000 | 0.1% | — | Dec 31, 2024 | Feb 14, 2025 |
| Berkshire Hathaway Inc. | Common Stock, par value $0.01 per share | 680,233,587 | 8.9% | — | Dec 31, 2024 | Feb 14, 2025 |
| Warren E. Buffett | Common Stock, par value $0.01 per share | 680,233,587 | 8.9% | — | Dec 31, 2024 | Feb 14, 2025 |
| Central States of Omaha Companies, Inc | — | 3,920,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| General Star National Insurance Company | — | 1,960,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| General Reinsurance Corporation | — | 21,000,000 | 0.3% | — | Sep 30, 2024 | Nov 14, 2024 |
| General Re Corporation | — | 21,000,000 | 0.3% | — | Sep 30, 2024 | Nov 14, 2024 |
| GEICO Indemnity Company | — | 81,200,000 | 1.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| Government Employees Insurance Company | — | 230,580,000 | 3% | — | Sep 30, 2024 | Nov 14, 2024 |
| Berkshire Hathaway Direct Insurance Company | — | 850,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| General Star Indemnity Company | — | 5,040,000 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| Mount Vernon Fire Insurance Company | — | 7,000,000 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| NorGUARD Insurance Company | — | 615,550 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| Am GUARD Insurance Company | — | 311,642 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| West GUARD Insurance Company | — | 927,192 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| The Medical Protective Company | — | 560,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| GEICO Corporation | — | 311,780,000 | 4.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| MedPro Group Inc | — | 560,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| National Fire & Marine Insurance Company | — | 28,668,366 | 0.4% | — | Sep 30, 2024 | Nov 14, 2024 |
| First Berkshire Life Insurance Company | — | 145,500 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| BHG Life Insurance Company | — | 946,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| Berkshire Hathaway Life Insurance Company of Nebraska | — | 8,147,000 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| United States Liability Insurance Company | — | 9,800,000 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| U.S. Investment Corporation | — | 9,800,000 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| Berkshire Hathaway Specialty Insurance Company | — | 1,400,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| National Indemnity Company of Mid-America | — | 2,380,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| National Indemnity Company of the South | — | 2,800,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| National Indemnity Company | — | 564,884,941 | 7.3% | — | Sep 30, 2024 | Nov 14, 2024 |
| NRG America Holding Company | — | 5,600,000 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| Columbia Insurance Company | — | 141,410,000 | 1.8% | — | Sep 30, 2024 | Nov 14, 2024 |
| Finial Reinsurance Company | — | 10,185,480 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| Finial Holdings Inc | — | 10,185,480 | 0.1% | — | Sep 30, 2024 | Nov 14, 2024 |
| National Liability & Fire Insurance Company | — | 28,000,000 | 0.4% | — | Sep 30, 2024 | Nov 14, 2024 |
| Cypress Insurance Company | — | 2,100,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| Oak River Insurance Company | — | 4,200,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| BH Finance LLC | — | 140,000,000 | 1.8% | — | Sep 30, 2024 | Nov 14, 2024 |
| Berkshire Hathaway Homestate Insurance Company | — | 11,900,000 | 0.2% | — | Sep 30, 2024 | Nov 14, 2024 |
| Central States Indemnity Company of Omaha | — | 3,920,000 | — | — | Sep 30, 2024 | Nov 14, 2024 |
| Berkshire Hathaway Inc | — | 797,683,307 | 10.4% | — | Sep 30, 2024 | Nov 14, 2024 |
| Warren E. Buffett | — | 797,683,307 | 10.4% | — | Sep 30, 2024 | Nov 14, 2024 |
| The Vanguard Group - 23-1945930 | — | 608,297,711 | 7.7% | — | — | Feb 13, 2024 |
| BlackRock, Inc. | Common Stock | 494,523,426 | 6.2% | — | Dec 31, 2023 | Jan 29, 2024 |
| The Vanguard Group - 23-1945930 | — | 607,703,467 | 7.6% | — | — | Feb 9, 2023 |
| BlackRock, Inc. | Common Stock | 474,777,122 | 5.9% | — | Dec 31, 2022 | Feb 7, 2023 |
| BlackRock, Inc. | Common Stock | 496,922,071 | 6.1% | — | Dec 31, 2021 | Mar 11, 2022 |
| The Vanguard Group - 23-1945930 | — | 586,192,046 | 7.2% | — | — | Feb 9, 2022 |
| BlackRock, Inc. | Common Stock | 496,922,071 | 6.1% | — | Dec 31, 2021 | Feb 8, 2022 |
| Central States of Omaha Companies, Inc | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 3,920,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| General Star National Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 1,960,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| General Reinsurance Corporation | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 22,751,400 | 0.3% | — | Dec 31, 2020 | Feb 16, 2021 |
| General Re Corporation | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 22,751,400 | 0.3% | — | Dec 31, 2020 | Feb 16, 2021 |
| GEICO Indemnity Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 81,200,000 | 0.9% | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway Direct Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 850,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| General Star Indemnity Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 5,040,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| Mount Vernon Fire Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 7,000,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| Old United Casualty Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 443,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| NorGUARD Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 868,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Government Employees Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 229,600,000 | 2.7% | — | Dec 31, 2020 | Feb 16, 2021 |
| Am GUARD Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 521,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| West GUARD Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 1,389,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway International Insurance Ltd | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 1,827,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Princeton Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 1,043,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| The Medical Protective Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 10,396,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| MedPro Group Inc | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 11,999,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| National Fire & Marine Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 17,275,000 | 0.2% | — | Dec 31, 2020 | Feb 16, 2021 |
| Genesis Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 176,400 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| First Berkshire Life Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 145,500 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| BHG Life Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 2,560,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| GEICO Corporation | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 311,780,000 | 3.6% | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway Life Insurance Company of Nebraska | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 14,777,000 | 0.2% | — | Dec 31, 2020 | Feb 16, 2021 |
| United States Liability Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 9,800,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| U.S. Investment Corporation | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 9,800,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| Wellfleet New York Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 560,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway Specialty Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 6,489,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| GEICO Marine Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 980,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Boat America Corporation | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 980,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| National Indemnity Company of Mid-America | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 2,380,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| National Indemnity Company of the South | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 2,800,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| NRG America Holding Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 5,600,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| National Indemnity Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 745,228,606 | 8.6% | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway Assurance Corporation | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 22,400,000 | 0.3% | — | Dec 31, 2020 | Feb 16, 2021 |
| Columbia Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 205,877,000 | 2.4% | — | Dec 31, 2020 | Feb 16, 2021 |
| Finial Reinsurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 14,980,000 | 0.2% | — | Dec 31, 2020 | Feb 16, 2021 |
| Finial Holdings Inc | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 14,980,000 | 0.2% | — | Dec 31, 2020 | Feb 16, 2021 |
| National Liability & Fire Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 28,000,000 | 0.3% | — | Dec 31, 2020 | Feb 16, 2021 |
| Cypress Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 2,100,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Oak River Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 4,200,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| BH Finance LLC | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 140,000,000 | 1.6% | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway Homestate Insurance Company | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 11,900,000 | 0.1% | — | Dec 31, 2020 | Feb 16, 2021 |
| Central States Indemnity Company of Omaha | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 3,920,000 | — | — | Dec 31, 2020 | Feb 16, 2021 |
| Berkshire Hathaway Inc | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 1,032,852,006 | 11.9% | — | Dec 31, 2020 | Feb 16, 2021 |
| Warren E. Buffett | COMMON STOCK, PAR VALUE $0.01 PER SHARE | 1,032,852,006 | 11.9% | — | Dec 31, 2020 | Feb 16, 2021 |
| The Vanguard Group - 23-1945930 | — | 614,743,131 | 7.1% | — | — | Feb 10, 2021 |