Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionFirst National Trust Co
Latest Disclosed Ownership50,533 shares
Latest Disclosed Value $ 24,215,413
First National Trust Co reports 10.82% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On May 7, 2026 - First National Trust Co filed a 13F-HR form disclosing ownership of 50,533 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $24,215,413 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 56,662 shares of Berkshire Hathaway Inc.. This represents a change in shares of -10.82% 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)
2026-05-07 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,533 -6,129 -10.82 24,215 -14.98 0.4484
2026-02-09 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,662 178 0.32 28,481 0.30 0.9498
2025-11-06 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 56,484 -2,376 -4.04 28,397 -0.69 0.9727
2025-08-01 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 58,860 -1,822 -3.00 28,592 -11.53 1.0691
2025-05-08 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 60,682 -5,775 -8.69 32,318 7.29 1.3022
2025-02-10 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 66,457 2,597 4.07 30,124 2.49 1.1309
2024-11-05 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 63,860 4,767 8.07 29,392 22.27 1.1359
2024-08-02 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 59,093 25 0.04 24,039 -3.22 0.9892
2024-04-26 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NE 084670702 59,068 8,696 17.26 24,839 38.26 1.0086
2024-02-06 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,372 -166 -0.33 17,966 1.48 0.7888
2023-11-06 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 50,538 2,148 4.44 17,703 7.29 0.8448
2023-08-01 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 48,390 146 0.30 16,501 10.77 0.7643
2023-04-26 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 48,244 378 0.79 14,896 0.75 0.7923
2023-02-02 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 47,866 1,104 2.36 14,786 18.40 0.7817
2022-11-02 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,762 1,291 2.84 12,487 0.59 0.7280
2022-08-03 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,471 163 0.36 12,414 -22.36 0.6986
2022-05-03 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 45,308 5,255 13.12 15,990 33.52 0.8286
2022-02-03 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 40,053 1,624 4.23 11,976 14.18 0.6293
2021-11-05 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 38,429 616 1.63 10,489 -0.19 0.6267
2021-08-06 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,813 692 1.86 10,509 10.82 0.6391
2021-05-06 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,121 -432 -1.15 9,483 8.90 0.6210
2021-02-10 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,553 402 1.08 8,708 10.07 0.6008
2020-11-04 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 37,151 1,420 3.97 7,911 24.02 0.6155
2020-08-06 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,731 303 0.86 6,379 -1.51 0.5391
2020-04-29 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,428 497 1.42 6,477 -18.14 0.6471
2020-02-04 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 34,931 -652 -1.83 7,912 6.89 0.6428
2019-11-01 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 35,583 1,563 4.59 7,402 2.07 0.6646
2019-07-22 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 34,020 1,014 3.07 7,252 9.38 0.6759
2019-04-25 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 33,006 384 1.18 6,630 -0.45 0.6633
2019-01-28 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 32,622 3,063 10.36 6,660 5.23 0.7427
2018-10-31 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,559 256 0.87 6,329 15.72 0.6445
2018-07-30 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 29,303 743 2.60 5,469 -4.02 0.6027
2018-04-30 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 28,560 3,315 13.13 5,698 13.87 0.6490
2018-01-17 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 25,245 405 1.63 5,004 9.91 0.5503
2017-11-06 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 24,840 -48 -0.19 4,553 8.02 0.5279
2017-08-07 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 24,888 1,872 8.13 4,215 9.85 0.5153
2017-05-09 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 23,016 2,015 9.59 3,837 12.09 0.4975
2017-01-30 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,001 -105 -0.50 3,423 12.27 0.4822
2016-11-02 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,106 -660 -3.03 3,049 -3.27 0.4592
2016-07-27 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,766 3,594 19.78 3,152 22.27 0.4837
2016-05-09 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,172 -503 -2.69 2,578 4.54 0.3948
2016-02-03 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 18,675 1,195 6.84 2,466 8.16 0.3903
2015-11-09 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,480 435 2.55 2,280 -1.72 0.3913
2015-07-20 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 17,045 2,331 15.84 2,320 9.28 0.3728
2015-05-08 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,714 14,714 0.00 2,123 0.3627
2015-01-28 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -12,077 -100.00 0 -100.00
2014-11-06 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,077 -412 -3.30 1,668 5.50 0.3155
2014-08-08 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,489 800 6.84 1,581 8.21 0.3049
2014-05-07 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,689 -90 -0.76 1,461 4.58 0.2613
2014-02-04 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,779 174 1.50 1,397 6.07 0.2544
2013-12-17 2013-09-30 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,605 175 1.53 1,317 2.89 0.2580
2013-11-13 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,605 1,317
2013-08-09 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,430 11,430 1,280 0.2624
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.