Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionFirst Washington CORP
Latest Disclosed Ownership650 shares
Latest Disclosed Value $ 311,480
First Washington CORP ownership in BRKB / Berkshire Hathaway Inc.

On May 14, 2026 - First Washington CORP filed a 13F-HR form disclosing ownership of 650 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $311,480 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 650 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)
2026-05-14 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 311 -4.60 0.0881
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 327 0.00 0.0846
2025-11-13 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 327 3.49 0.0876
2025-08-12 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 316 -8.96 0.1018
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 346 17.69 0.1215
2025-02-13 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 295 -1.67 0.1041
2024-11-13 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 299 13.26 0.1188
2024-08-12 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 264 -3.30 0.0979
2024-05-13 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 273 18.18 0.1045
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 232 1.76 0.0891
2023-11-13 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 228 2.71 0.0920
2023-08-11 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 222 10.50 0.0972
2023-05-12 2023-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 201 0.0992
2023-05-12 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0 0.0994
2023-02-14 2022-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 650 0 0.0985
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 650 0 0.0001
2022-08-10 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 0 -650 -100.00 0 -100.00
2022-05-11 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 229 18.04 0.0924
2022-02-10 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 194 9.60 0.0751
2021-11-12 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 177 -2.21 0.0645
2021-08-12 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 181 9.04 0.0675
2021-05-13 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 166 9.93 0.0656
2021-02-11 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 151 9.42 0.0682
2020-11-13 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 138 18.97 0.0830
2020-08-13 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 116 -2.52 0.0679
2020-05-08 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 119 -19.05 0.0747
2020-02-10 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 -298 -31.43 147 -25.38 0.0676
2019-11-08 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 948 0 0.00 197 -2.48 0.0980
2019-08-14 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 948 0 0.00 202 6.32 0.0996
2019-05-15 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 948 0 0.00 190 -2.06 0.0964
2019-02-08 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 948 0 0.00 194 -4.43 0.1060
2018-11-13 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 948 298 45.85 203 67.77 0.0965
2018-08-10 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 121 -6.92 0.0600
2018-05-04 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 130 0.78 0.0674
2018-02-07 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 129 8.40 0.0607
2017-11-07 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 119 -89.19 0.0592
2017-08-10 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 0 0.00 1,101 919.44 0.0551
2017-05-05 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 650 -150 -18.75 108 -16.92 0.0593
2017-02-09 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 800 -200 -20.00 130 -9.72 0.0714
2016-11-03 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,000 -700 -41.18 144 -41.46 0.0807
2016-08-05 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,700 0 0.00 246 2.07 0.1414
2016-05-09 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,700 0 0.00 241 7.59 0.1425
2016-02-11 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,700 0 0.00 224 0.90 0.1305
2015-11-10 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,700 700 70.00 222 63.24 0.1340
2015-08-07 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,000 -200 -16.67 136 -21.39 0.0758
2015-05-11 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,200 0 0.00 173 -3.89 0.1004
2015-02-12 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,200 0 0.00 180 8.43 0.1066
2014-11-10 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,200 0 0.00 166 9.21 0.0949
2014-08-13 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,200 0 0.00 152 1.33 0.0850
2014-05-05 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,200 0 0.00 150 5.63 0.0866
2014-02-14 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 1,200 1,200 142 0.0771
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.