Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionNorthwest Bancshares, Inc.
Latest Disclosed Ownership5,255 shares
Latest Disclosed Value $ 2,518,196
Northwest Bancshares, Inc. ownership in BRKB / Berkshire Hathaway Inc.

On May 12, 2026 - Northwest Bancshares, Inc. filed a 13F-HR form disclosing ownership of 5,255 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $2,518,196 USD as of March 31, 2026.

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)
2026-05-12 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,255 0 0.00 2,518 -4.66 0.4991
2026-02-13 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,255 76 1.47 2,641 1.46 0.5105
2025-11-14 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,179 0 0.00 2,604 3.50 0.4324
2025-08-07 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,179 -100 -1.89 2,516 -10.53 0.4386
2025-05-07 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,279 0 0.00 2,811 17.52 0.5166
2025-02-12 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,279 -450 -7.85 2,393 -9.26 0.4430
2024-11-08 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,729 -350 -5.76 2,637 6.63 0.4491
2024-08-08 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,079 -5 -0.08 2,473 -3.36 0.4212
2024-04-26 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,084 434 7.68 2,558 26.95 0.4037
2024-02-14 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,650 0 0.00 2,015 1.82 0.3674
2023-10-27 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,650 0 0.00 1,979 2.75 0.3789
2023-07-24 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,650 -91 -1.59 1,927 8.69 0.3483
2023-05-10 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,741 91 1.61 1,773 1.55 0.3418
2023-02-13 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,650 -400 -6.61 1,745 8.05 0.3504
2022-11-15 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,050 0 0.00 1,615 -2.18 0.3771
2022-08-16 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,050 -100 -1.63 1,651 -23.92 0.3732
2022-04-29 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,150 0 0.00 2,170 18.00 0.3850
2022-02-09 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,150 0 0.00 1,839 9.59 0.3614
2021-10-13 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,150 0 0.00 1,678 -1.81 0.3821
2021-08-06 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,150 -100 -1.60 1,709 7.01 0.3874
2021-04-23 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,250 -50 -0.79 1,597 9.31 0.3773
2021-02-05 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,300 0 0.00 1,461 8.95 0.3747
2020-10-20 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,300 0 0.00 1,341 19.20 0.3468
2020-08-07 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 6,300 1,000 18.87 1,125 16.10 0.3064
2020-05-05 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,300 0 0.00 969 -19.25 0.4817
2020-02-10 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,300 0 0.00 1,200 8.79 0.4632
2019-10-09 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,300 0 0.00 1,103 -2.39 0.4551
2019-07-17 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,300 0 0.00 1,130 6.10 0.4764
2019-04-24 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,300 -60 -1.12 1,065 -2.65 0.4595
2019-02-08 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,360 110 2.10 1,094 -2.67 0.5278
2018-10-02 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,250 0 0.00 1,124 14.69 0.4975
2018-08-09 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,250 0 0.00 980 -6.40 0.4134
2018-05-09 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,250 0 0.00 1,047 0.58 0.4300
2018-02-14 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 5,250 5,250 1,041 0.4251
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.