Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionBislett Management, Llc
Latest Disclosed Ownership11,000 shares
Latest Disclosed Value $ 5,271,200
Bislett Management, Llc ownership in BRKB / Berkshire Hathaway Inc.

On May 11, 2026 - Bislett Management, Llc filed a 13F-HR form disclosing ownership of 11,000 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $5,271,200 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 11,000 shares of Berkshire Hathaway Inc.. This represents a change in shares of 0.00% 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)
2026-05-11 2026-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 5,271 -4.67 4.0663
2026-02-17 2025-12-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 5,529 -0.02 4.1938
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 5,530 3.50 4.0045
2025-08-11 2025-06-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 5,343 -8.79 3.6557
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 5,858 17.49 4.1470
2025-02-12 2024-12-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 4,986 -1.50 3.5278
2024-10-30 2024-09-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 5,063 13.14 3.3897
2024-08-13 2024-06-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 4,475 -3.26 3.2185
2024-05-15 2024-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 4,626 17.89 2.8976
2024-01-24 2023-12-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 3,923 1.82 2.5102
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 3,853 2.72 2.7165
2023-08-09 2023-06-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 3,751 10.45 2.4265
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 3,396 -0.03 2.2560
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 3,398 15.66 2.4463
2022-11-14 2022-09-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 2,937 -2.20 2.0147
2022-08-10 2022-06-30 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 3,003 -22.64 1.9810
2022-05-13 2022-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 3,882 18.03 2.0348
2022-02-03 2021-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 3,289 9.56 1.5833
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 3,002 -1.80 1.4909
2021-08-02 2021-06-30 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 3,057 8.79 1.5012
2021-05-11 2021-03-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,810 10.15 1.4164
2021-02-12 2020-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,551 8.92 1.4298
2020-11-10 2020-09-30 13F BERKSHIRE HATHAWAY INC COM CL B 084670702 11,000 0 0.00 2,342 19.25 1.4540
2020-08-06 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,964 -2.34 1.3578
2020-05-12 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 2,011 -19.30 1.5974
2020-02-11 2019-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,492 8.92 1.4284
2019-11-13 2019-09-30 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,288 -2.43 1.3553
2019-08-06 2019-06-30 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,345 6.11 1.4290
2019-05-10 2019-03-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,210 -1.60 1.3357
2019-02-05 2018-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 2,246 -4.63 1.5093
2018-11-07 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 2,355 14.71 1.2669
2018-08-13 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 2,053 -6.43 1.1370
2018-05-10 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 2,194 0.64 1.2193
2018-02-06 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 2,180 8.08 1.2655
2017-11-13 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 2,017 8.27 1.1987
2017-08-10 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B CL B New 084670702 11,000 0 0.00 1,863 1.64 1.1346
2017-05-12 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B New 084670702 11,000 0 0.00 1,833 2.23 1.1472
2017-02-13 2016-12-31 13F BERKSHIRE HATHAWAY CL B New 084670702 11,000 0 0.00 1,793 12.84 1.1607
2016-11-04 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,000 0 0.00 1,589 -0.25 1.0515
2016-08-03 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,593 2.05 1.1003
2016-05-12 2016-03-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 1,561 7.51 1.0569
2016-02-12 2015-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 1,452 1.26 1.0084
2015-11-10 2015-09-30 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 1,434 -4.21 1.0061
2015-08-14 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,497 -5.73 1.0286
2015-05-12 2015-03-31 13F BERKSHIRE HATHAWAY CL B NEW 084670702 11,000 0 0.00 1,588 -3.87 1.0010
2015-02-17 2014-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 1,652 8.68 1.1169
2014-11-13 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,520 9.20 0.9970
2014-08-11 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,392 1.24 0.8283
2014-05-09 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,375 5.44 0.8675
2014-02-11 2013-12-31 13F BERKSHIRE HATHAWAY CL B 084670702 11,000 0 0.00 1,304 4.40 0.8429
2013-11-06 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 0 0.00 1,249 1.46 0.8174
2013-08-09 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B 084670702 11,000 11,000 1,231 0.8181
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.