Berkshire Hathaway Inc.
BG ˙ BUL
SecurityBG:BRYN / Berkshire Hathaway Inc.
InstitutionPatten Group, Inc.
Latest Disclosed Ownership46,311 shares
Latest Disclosed Value $ 22,192,231
Patten Group, Inc. reports 220.56% increase in ownership of BRYN / Berkshire Hathaway Inc.

On April 24, 2026 - Patten Group, Inc. filed a 13F-HR form disclosing ownership of 46,311 shares of Berkshire Hathaway Inc. (BG:BRYN) valued at $22,192,231 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 14,447 shares of Berkshire Hathaway Inc.. This represents a change in shares of 220.56% 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)
2026-04-24 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 46,311 31,864 220.56 22,192 205.63 3.8577
2026-01-23 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,447 91 0.63 7,262 0.61 1.3430
2025-11-10 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,356 -25 -0.17 7,217 3.32 1.4050
2025-07-30 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 14,381 968 7.22 6,986 -2.21 1.4757
2025-05-14 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,413 -137 -1.01 7,143 16.32 1.6368
2025-02-06 2024-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,550 -20 -0.15 6,142 -1.67 1.3593
2024-10-08 2024-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,570 -42 -0.31 6,246 12.79 1.3872
2024-07-25 2024-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,612 28 0.21 5,537 -3.06 1.3063
2024-04-17 2024-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,584 459 3.50 5,712 22.03 1.4057
2024-01-10 2023-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 13,125 773 6.26 4,681 8.21 1.2705
2023-10-12 2023-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,352 -24 -0.19 4,327 2.51 1.2928
2023-07-26 2023-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,376 43 0.35 4,220 10.82 0.6254
2023-04-06 2023-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,333 -31 -0.25 3,808 -0.29 1.1430
2023-02-10 2022-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,364 341 2.84 3,819 18.05 1.1996
2022-10-13 2022-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,023 0 0.00 3,235 -3.66 1.1112
2022-07-18 2022-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,023 -7 -0.06 3,358 -20.91 1.0759
2022-04-28 2022-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,030 -69 -0.57 4,246 17.36 1.1912
2022-01-20 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,099 48 0.40 3,618 10.00 0.9578
2021-11-15 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,051 -9 -0.07 3,289 -1.88 0.9670
2021-08-03 2021-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 12,060 100 0.84 3,352 9.72 0.9850
2021-04-23 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,960 0 0.00 3,055 10.17 0.9784
2021-02-02 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,960 0 0.00 2,773 8.87 0.7486
2020-10-19 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,960 0 0.00 2,547 19.30 0.9937
2020-07-20 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,960 225 1.92 2,135 -0.51 0.9186
2020-04-16 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,735 -91 -0.77 2,146 -19.90 1.1097
2020-01-14 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,826 270 2.34 2,679 11.44 0.9987
2019-10-22 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,556 -315 -2.65 2,404 -5.02 0.9770
2019-07-11 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 11,871 -20 -0.17 2,531 5.94 1.0350
2019-05-14 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL COM 084670702 11,891 -130 -1.08 2,389 -2.65 1.0283
2019-02-12 2018-12-31 13F Berkshire Hathaway Inc B CS 084670702 12,021 0 0.00 2,454 -4.66 1.1637
2018-11-14 2018-09-30 13F Berkshire Hathaway Inc B CS 084670702 12,021 -260 -2.12 2,574 12.30 0.9816
2018-08-13 2018-06-30 13F Berkshire Hathaway Inc B CS 084670702 12,281 -50 -0.41 2,292 -6.83 0.9183
2018-05-11 2018-03-31 13F Berkshire Hathaway Inc B CS 084670702 12,331 -25 -0.20 2,460 0.45 1.0093
2018-02-02 2017-12-31 13F Berkshire Hathaway Inc B CS 084670702 12,356 0 0.00 2,449 8.12 0.9700
2017-12-12 2017-09-30 13F/A-1 Berkshire Hathaway Inc B CS 084670702 12,356 2 0.02 2,265 1.89 0.9163
2017-11-14 2017-09-30 13F Berkshire Hathaway Inc B CS 084670702 14,790 2,436 2,265 916,288.0826
2017-08-14 2017-06-30 13F Berkshire Hathaway Inc B CS 084670702 12,354 -644 -4.95 2,223 2.92 0.9010
2017-05-30 2017-03-31 13F Berkshire Hathaway Inc B CS 084670702 12,998 710 5.78 2,160 6.93 0.9374
2017-02-10 2016-12-31 13F Berkshire Hathaway Inc B CS 084670702 12,288 293 2.44 2,020 17.31 0.9065
2016-11-14 2016-09-30 13F Berkshire Hathaway Inc Del Cl B CS 084670702 11,995 -205 -1.68 1,722 -2.49 0.8084
2016-08-15 2016-06-30 13F Berkshire Hathaway Inc Del Cl B CS 084670702 12,200 -150 -1.21 1,766 0.80 0.8267
2016-05-13 2016-03-31 13F Berkshire Hathaway CS 084670702 12,350 -205 -1.63 1,752 5.73 0.8314
2016-02-17 2015-12-31 13F Berkshire Hathaway CS 084670702 12,555 -2,235 -15.11 1,658 -14.06 0.7970
2015-11-16 2015-09-30 13F Berkshire Hathaway CS 084670702 14,790 0 0.00 1,929 -4.22 0.9929
2015-08-24 2015-06-30 13F Berkshire Hathaway CS 084670702 14,790 -300 -1.99 2,013 -7.58 0.9562
2015-05-06 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,090 0 0.00 2,178 -3.88 1.1153
2015-02-18 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 15,090 15,090 2,266 1.1004
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.