Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionCoastline Trust Co
Latest Disclosed Ownership22,514 shares
Latest Disclosed Value $ 10,788,709
Coastline Trust Co reports 8.85% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 3, 2026 - Coastline Trust Co filed a 13F-HR form disclosing ownership of 22,514 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $10,788,709 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 4 shares of Berkshire Hathaway Inc.. This represents a change in shares of -8.85% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-03 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,514 -2,185 -8.85 10,789 -13.10 1.0233
2026-01-05 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 24,699 2,813 12.85 12,415 12.83 1.1676
2025-10-21 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,886 -29 -0.13 11,003 3.35 1.1808
2025-07-17 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,915 1,093 5.25 10,646 -4.00 1.2193
2025-04-28 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 20,822 -144 -0.69 11,089 16.69 1.3784
2025-02-13 2024-12-31 13F Berkshire Hathaway CL B NEW 084670702 20,966 -142 -0.67 9,503 -2.18 1.1127
2024-11-06 2024-09-30 13F Berkshire Hathaway CL B NEW 084670702 21,108 -2,934 -12.20 9,715 -0.66 1.1415
2024-07-15 2024-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 24,042 -1,865 -7.20 9,780 -10.23 1.1451
2024-04-26 2024-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 25,907 1,807 7.50 10,894 26.75 1.3166
2024-01-23 2023-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 24,100 -128 -0.53 8,596 1.27 1.1430
2023-10-18 2023-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 24,228 329 1.38 8,487 4.15 1.2513
2023-08-07 2023-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 23,899 3,224 15.59 8,150 27.67 1.1412
2023-05-31 2023-03-31 13F/A-1 BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 20,675 505 2.50 6,384 2.46 0.9454
2023-04-12 2023-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 20,170 0 6,231 0.5092
2023-02-09 2022-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 20,170 3,679 22.31 6,231 41.49 0.9282
2022-11-03 2022-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 16,491 1,555 10.41 4,403 7.97 0.7044
2022-07-22 2022-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 14,936 -739 -4.71 4,078 -26.28 0.6032
2022-05-04 2022-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 15,675 -178 -1.12 5,532 16.71 0.6719
2022-02-10 2021-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 15,853 613 4.02 4,740 13.94 0.5407
2021-11-09 2021-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 15,240 910 6.35 4,160 4.44 0.5175
2021-08-10 2021-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 14,330 2,540 21.54 3,983 32.24 0.4930
2021-05-10 2021-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 11,790 1,090 10.19 3,012 21.40 0.3883
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 10,700 125 1.18 2,481 10.22 0.3306
2020-10-15 2020-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 10,575 -1,100 -9.42 2,251 8.01 0.3383
2020-08-07 2020-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 11,675 65 0.56 2,084 -1.79 0.3290
2020-06-10 2020-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 11,610 -705 -5.72 2,122 -23.92 0.3832
2020-01-15 2019-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 12,315 -1,315 -9.65 2,789 -1.62 0.3866
2019-10-18 2019-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 13,630 -2,090 -13.30 2,835 -15.40 0.4172
2019-07-18 2019-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 15,720 -2,637 -14.37 3,351 -9.14 0.4871
2019-04-25 2019-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,357 -290 -1.56 3,688 -3.15 0.5508
2019-01-15 2018-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,647 0 0.00 3,808 -4.63 0.6566
2018-10-17 2018-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,647 1,241 7.13 3,993 22.90 0.5723
2018-07-27 2018-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 17,406 0 0.00 3,249 -6.42 0.4899
2018-04-16 2018-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 17,406 -1,360 -7.25 3,472 -6.67 0.5335
2018-01-17 2017-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,766 100 0.54 3,720 8.71 0.5596
2017-11-17 2017-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,666 -1,020 -5.18 3,422 2.64 0.5967
2017-08-10 2017-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 19,686 -2,084 -9.57 3,334 -8.13 0.6043
2017-04-19 2017-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 21,770 -445 -2.00 3,629 0.25 0.6775
2017-01-17 2016-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,215 125 0.57 3,620 13.44 0.7111
2016-10-20 2016-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,090 -15 -0.07 3,191 -0.31 0.6243
2016-07-18 2016-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,105 75 0.34 3,201 2.40 0.6466
2016-04-15 2016-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,030 0 0.00 3,126 7.46 0.6669
2016-01-15 2015-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,030 0 0.00 2,909 1.25 0.6387
2015-10-30 2015-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,030 0 0.00 2,873 -4.17 0.6541
2015-07-22 2015-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,030 -50 -0.23 2,998 -5.90 0.6271
2015-04-17 2015-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,080 -615 -2.71 3,186 -6.49 0.6539
2015-01-21 2014-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 22,695 6,000 35.94 3,407 47.75 0.7115
2014-10-20 2014-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 16,695 0 0.00 2,306 9.13 0.6044
2014-07-23 2014-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 16,695 -1,075 -6.05 2,113 -4.82 0.5483
2014-05-09 2014-03-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 17,770 -550 -3.00 2,220 2.21 0.5902
2014-02-14 2013-12-31 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,320 0 0.00 2,172 4.42 0.5899
2013-11-12 2013-09-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 18,320 -1,500 -7.57 2,080 -6.26 0.6115
2013-08-06 2013-06-30 13F BERKSHIRE HATHAWAY INC-CL B COMMON STOCK 084670702 19,820 19,820 2,219 0.6841
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.