Berkshire Hathaway Inc.
MX ˙ BMV
SecurityMX:BRKB / Berkshire Hathaway Inc.
InstitutionTompkins Financial Corp
Latest Disclosed Ownership21,418 shares
Latest Disclosed Value $ 10,263,506
Tompkins Financial Corp reports 0.94% decrease in ownership of BRKB / Berkshire Hathaway Inc.

On April 9, 2026 - Tompkins Financial Corp filed a 13F-HR form disclosing ownership of 21,418 shares of Berkshire Hathaway Inc. (MX:BRKB) valued at $10,263,506 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 8, 2026 disclosing 21,622 shares of Berkshire Hathaway Inc.. This represents a change in shares of -0.94% 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)
2026-04-09 2026-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,418 -204 -0.94 10,264 -5.57 0.7209
2026-01-08 2025-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,622 -280 -1.28 10,868 -1.30 0.7478
2025-10-08 2025-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,902 -39 -0.18 11,011 3.31 0.9208
2025-07-10 2025-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 21,941 -555 -2.47 10,658 -11.04 0.9798
2025-04-07 2025-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 22,496 296 1.33 11,981 19.06 1.1464
2025-01-15 2024-12-31 13F Berkshire Hathaway CL B NEW 084670702 22,200 426 1.96 10,063 0.41 0.9359
2024-11-01 2024-09-30 13F Berkshire Hathaway CL B NEW 084670702 21,774 1,183 5.75 10,022 19.64 0.9606
2024-07-17 2024-06-30 13F Berkshire Hathaway CL B NEW 084670702 20,591 6 0.03 8,376 -3.23 0.8772
2024-04-08 2024-03-31 13F Berkshire Hathaway CL B NEW 084670702 20,585 489 2.43 8,656 20.78 0.9789
2024-01-08 2023-12-31 13F Berkshire Hathaway CL B NEW 084670702 20,096 224 1.13 7,167 2.96 0.8682
2023-11-21 2023-09-30 13F Berkshire Hathaway CL B NEW 084670702 19,872 203 1.03 6,961 3.79 1.0960
2023-07-12 2023-06-30 13F Berkshire Hathaway CL B NEW 084670702 19,669 -216 -1.09 6,707 9.25 1.0503
2023-04-20 2023-03-31 13F Berkshire Hathaway CL B NEW 084670702 19,885 -255 -1.27 6,140 102,216.67 0.9993
2023-01-06 2022-12-31 13F Berkshire Hathaway CL B NEW 084670702 20,140 65 0.32 6 -99.89 0.9831
2022-10-13 2022-09-30 13F Berkshire Hathaway CL B NEW 084670702 20,075 402 2.04 5,360 -0.20 0.9045
2022-07-14 2022-06-30 13F Berkshire Hathaway CL B NEW 084670702 19,673 -52 -0.26 5,371 -22.84 0.8632
2022-05-12 2022-03-31 13F Berkshire Hathaway CL B NEW 084670702 19,725 94 0.48 6,961 18.59 0.9813
2022-01-24 2021-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 19,631 440 2.29 5,870 12.07 1.0415
2021-10-22 2021-09-30 13F BERKSHIRE HATHAWAY INC DEL EQUITIES/EXCHANGE TRADED FUNDS 084670702 19,191 4,168 27.74 5,238 36.48 0.9575
2021-06-09 2021-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 15,023 384 2.62 3,838 13.08 0.6498
2021-02-12 2020-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 14,639 1,048 7.71 3,394 17.28 0.6105
2021-02-05 2020-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B US LARGE-CAP EQUITIES 084670702 77,138 63,547 14,103 593,657.5501
2020-10-23 2020-09-30 13F BERKSHIRE HATHAWAY INC DEL EQUITIES/EXCHANGE TRADED FUNDS 084670702 13,591 112 0.83 2,894 20.28 0.5565
2020-07-29 2020-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 13,479 593 4.60 2,406 2.12 0.5054
2020-04-22 2020-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 12,886 137 1.07 2,356 -18.42 0.5437
2020-01-22 2019-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 12,749 381 3.08 2,888 12.24 0.5292
2020-01-15 2019-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 12,368 0 2,573 390,795.8688
2019-10-17 2019-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 12,368 60 0.49 2,573 -1.94 0.5228
2019-07-17 2019-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 12,308 918 8.06 2,624 14.69 0.5276
2019-04-30 2019-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL EQUITIES/EXCHANGE TRADED FUNDS 084670702 11,390 425 3.88 2,288 2.19 0.4346
2019-04-17 2019-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,722 -243 2,296
2019-01-22 2018-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,965 243 2.27 2,239 -2.48 0.4944
2018-10-18 2018-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,722 187 1.78 2,296 16.79 0.4709
2018-07-18 2018-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,535 121 1.16 1,966 -5.34 0.4237
2018-04-26 2018-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,414 40 0.39 2,077 1.02 0.4653
2018-01-24 2017-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,374 217 2.14 2,056 10.42 0.4712
2017-10-17 2017-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 10,157 6,080 149.13 1,862 169.46 0.4409
2017-07-11 2017-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 4,077 0 0.00 691 1.62 0.1739
2017-04-17 2017-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 4,077 0 0.00 680 2.41 0.1725
2017-04-17 2017-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,830 543
2017-01-10 2016-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 4,077 535 15.10 664 29.69 0.1739
2016-10-13 2016-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,542 -37 -1.03 512 -1.16 0.1467
2016-07-13 2016-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,579 -251 -6.55 518 -4.60 0.1532
2016-04-20 2016-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,830 55 1.46 543 9.04 0.1716
2016-01-19 2015-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,775 22 0.59 498 1.84 0.1586
2015-10-16 2015-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,753 -50 -1.31 489 -5.60 0.1581
2015-07-14 2015-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,803 0 0.00 518 -5.65 0.1408
2015-04-21 2015-03-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,803 -73 -1.88 549 -5.67 0.1375
2015-04-14 2015-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,803 549
2015-01-15 2014-12-31 13F/A-1 BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,876 140 3.75 582 12.79 0.1451
2015-01-13 2014-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 4,822 540
2014-10-10 2014-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,736 -180 -4.60 516 4.03 0.1352
2014-07-11 2014-06-30 13F BERKSHIRE HATHAWAY INC DEL EQUITIES/EXCHANGE TRADED FUNDS 084670702 3,916 -542 -12.16 496 -10.95 0.1226
2014-04-10 2014-03-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 4,458 -1,185 -21.00 557 -16.74 0.1410
2014-01-08 2013-12-31 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 5,643 -209 -3.57 669 0.75 0.1733
2013-10-11 2013-09-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 5,852 1,030 21.36 664 22.96 0.1856
2013-07-19 2013-06-30 13F BERKSHIRE HATHAWAY INC DEL CL B EQUITIES/EXCHANGE TRADED FUNDS 084670702 4,822 4,822 540 0.1633
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.