Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionCoastal Bridge Advisors, LLC
Latest Disclosed Ownership17,697 shares
Latest Disclosed Value $ 8,480,202
Coastal Bridge Advisors, LLC reports 4.78% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - Coastal Bridge Advisors, LLC filed a 13F-HR form disclosing ownership of 17,697 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $8,480,202 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 18,585 shares of Berkshire Hathaway Inc.. This represents a change in shares of -4.78% 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)
2026-05-14 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,697 -888 -4.78 8,480 -9.22 0.5993
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,585 1,839 10.98 9,342 10.96 0.6962
2025-11-03 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,746 -100 -0.59 8,419 2.87 0.6375
2025-08-14 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,846 382 2.32 8,183 -6.67 0.6742
2025-08-25 2025-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 16,464 9,482 135.81 8,768 177.12 1.2529
2025-05-08 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,982 0 3,718 0.9494
2025-02-14 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,982 0 0.00 3,165 -1.53 0.7967
2024-11-14 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,982 170 2.50 3,214 15.95 0.7964
2024-08-16 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,812 63 0.93 2,771 -2.36 0.6884
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,749 -375 -5.26 2,838 11.73 0.6533
2024-02-15 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,124 110 1.57 2,541 3.38 0.6510
2023-11-14 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,014 100 1.45 2,457 4.24 0.6588
2023-08-17 2023-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,914 -91 -1.30 2,358 9.02 0.5778
2023-08-14 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,005 2,163
2023-05-15 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,005 81 1.17 2,163 1.12 0.5467
2023-02-08 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,924 0 0.00 2,139 15.63 0.6070
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,924 96 1.41 1,849 -0.80 0.4974
2022-11-15 2022-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,828 30 0.44 1,864 -22.30 0.5735
2022-08-05 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 7,125 327 1,945 0.5874
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,798 -1,256 -15.59 2,399 -0.37 0.5522
2022-05-20 2021-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,054 1,196 17.44 2,408 28.63 0.5014
2022-02-14 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 9,345 2,487 2,794 0.6115
2022-05-20 2021-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,858 36 0.53 1,872 -1.27 0.4328
2021-11-15 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,122 1,300 2,217 0.4765
2021-08-10 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,822 90 1.34 1,896 10.23 0.3887
2021-05-17 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,732 285 4.42 1,720 15.05 0.3151
2021-02-16 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,447 150 2.38 1,495 11.48 0.2970
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,297 -110 -1.72 1,341 17.22 0.4089
2020-08-11 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,407 -206 -3.12 1,144 -5.38 0.3650
2020-05-14 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,613 65 0.99 1,209 -18.48 0.4437
2020-02-13 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,548 -76 -1.15 1,483 7.62 0.3849
2019-11-08 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,624 97 1.49 1,378 -0.93 0.4706
2019-08-13 2019-06-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,527 0 0.00 1,391 6.10 0.4117
2019-08-07 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 2,736 -3,791 1,489 0.4462
2019-05-08 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,527 -74 -1.12 1,311 -2.74 0.4578
2019-02-08 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,601 26 0.40 1,348 -4.26 0.5323
2018-11-08 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,575 0 0.00 1,408 14.75 0.5367
2018-08-03 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,575 486 7.98 1,227 0.99 0.4940
2018-05-11 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,089 541 9.75 1,215 11.06 0.4411
2018-02-09 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,548 -215 -3.73 1,094 3.60 0.3494
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,763 0 0.00 1,056 8.20 0.3460
2017-08-03 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,763 0 0.00 976 1.56 0.3284
2017-08-14 2017-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,763 -72 -1.23 961 1.05 0.3276
2017-05-04 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,763 -72 961 0.3171
2017-02-10 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,835 0 0.00 951 12.81 0.3701
2016-11-09 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,835 0 0.00 843 -0.24 0.4104
2016-08-15 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,835 -87 -1.47 845 0.60 0.4415
2016-05-16 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,922 0 0.00 840 7.42 0.5867
2016-02-09 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,922 5,922 782 0.4363
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.