The Boston Beer Company, Inc.
US ˙ NYSE ˙ US1005571070

SecuritySAM / The Boston Beer Company, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership4,030 shares
Latest Disclosed Value $ 786,374
Comerica Bank reports 2.47% decrease in ownership of SAM / The Boston Beer Company, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 4,030 shares of The Boston Beer Company, Inc. (US:SAM) valued at $786,374 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 4,132 shares of The Boston Beer Company, Inc.. This represents a change in shares of -2.47% during the quarter. The current value of the position is $659,953 USD.

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)
2026-01-29 2025-12-31 13F BOSTON BEER CL A 100557107 4,030 -102 -2.47 786 -9.97 0.0031
2025-11-14 2025-09-30 13F BOSTON BEER CL A 100557107 4,132 735 21.64 874 34.72 0.0033
2025-08-14 2025-06-30 13F BOSTON BEER CL A 100557107 3,397 -96 -2.75 648 -22.30 0.0025
2025-05-14 2025-03-31 13F BOSTON BEER CL A 100557107 3,493 216 6.59 834 -15.16 0.0035
2025-02-14 2024-12-31 13F/A-1 BOSTON BEER CL A 100557107 3,277 -506 -13.38 983 -10.06 0.0040
2025-02-14 2024-12-31 13F BOSTON BEER CL A 100557107 3,277 -506 983 0.0033
2024-11-14 2024-09-30 13F BOSTON BEER CL A 100557107 3,783 -318 -7.75 1,094 -12.63 0.0043
2024-08-15 2024-06-30 13F BOSTON BEER INC CL A COMMON 100557107 4,101 -92 -2.19 1,251 -1.96 0.0052
2024-05-16 2024-03-31 13F BOSTON BEER INC CL A COMMON 100557107 4,193 1,416 50.99 1,276 33.06 0.0055
2024-02-14 2023-12-31 13F BOSTON BEER INC CL A COMMON 100557107 2,777 -2,956 -51.56 960 -57.05 0.0044
2023-11-21 2023-09-30 13F BOSTON BEER COMMON 100557107 5,733 5,733 2,233 0.0116
2023-08-22 2023-06-30 13F BOSTON BEER INC CL A COM 100557107 0 -3,005 -100.00 0 -100.00
2023-01-26 2022-12-31 13F BOSTON BEER INC CL A COM 100557107 3,005 -576 -16.08 1 -99.93 0.0084
2022-10-28 2022-09-30 13F BOSTON BEER INC CL A COM 100557107 3,581 430 13.65 1,448 36.35 0.0122
2022-08-02 2022-06-30 13F BOSTON BEER INC CL A COM 100557107 3,151 15 0.48 1,062 -6.27 0.0087
2022-04-27 2022-03-31 13F BOSTON BEER INC CL A COM 100557107 3,136 -1 -0.03 1,133 -17.06 0.0082
2022-02-18 2021-12-31 13F BOSTON BEER INC CL A COM 100557107 3,137 -38 -1.20 1,366 -18.15 0.0101
2021-11-22 2021-09-30 13F BOSTON BEER INC CL A COM 100557107 3,175 -838 -20.88 1,669 -30.43 0.0101
2021-08-26 2021-06-30 13F BOSTON BEER INC CL A COM 100557107 4,013 31 0.78 2,399 -53.07 0.0143
2021-04-28 2021-03-31 13F BOSTON BEER INC CL A COM 100557107 3,982 -89 -2.19 5,112 34.99 0.0305
2021-01-28 2020-12-31 13F BOSTON BEER INC CL A COM 100557107 4,071 -130 -3.09 3,787 -17.39 0.0240
2020-10-30 2020-09-30 13F BOSTON BEER INC CL A COM 100557107 4,201 -253 -5.68 4,584 54.97 0.0333
2020-07-31 2020-06-30 13F BOSTON BEER INC CL A COM 100557107 4,454 378 9.27 2,958 65.34 0.0228
2020-05-01 2020-03-31 13F BOSTON BEER INC CL A COM 100557107 4,076 -1,946 -32.31 1,789 -18.05 0.0164
2020-02-07 2019-12-31 13F BOSTON BEER INC CL A COM 100557107 6,022 1,998 49.65 2,183 42.31 0.0165
2019-10-31 2019-09-30 13F BOSTON BEER INC CL A COM 100557107 4,024 187 4.87 1,534 2.40 0.0121
2019-08-02 2019-06-30 13F BOSTON BEER INC CL A COM 100557107 3,837 -69 -1.77 1,498 43.08 0.0120
2019-05-02 2019-03-31 13F BOSTON BEER INC CL A COM 100557107 3,906 -23 -0.59 1,047 8.84 0.0085
2019-02-06 2018-12-31 13F BOSTON BEER INC CL A COM 100557107 3,929 15 0.38 962 -12.39 0.0082
2018-11-01 2018-09-30 13F BOSTON BEER INC CL A COM 100557107 3,914 -1,122 -22.28 1,098 -31.97 0.0089
2018-08-01 2018-06-30 13F BOSTON BEER INC CL A COM 100557107 5,036 -298 -5.59 1,614 35.06 0.0113
2018-05-01 2018-03-31 13F BOSTON BEER INC CL A COM 100557107 5,334 38 0.72 1,195 19.74 0.0085
2018-02-02 2017-12-31 13F BOSTON BEER INC CL A COM 100557107 5,296 -160 -2.93 998 6.40 0.0066
2017-11-06 2017-09-30 13F BOSTON BEER INC CL A COM 100557107 5,456 -188 -3.33 938 27.27 0.0068
2017-08-03 2017-06-30 13F BOSTON BEER INC CL A COM 100557107 5,644 -27 -0.48 737 -7.64 0.0055
2017-05-03 2017-03-31 13F BOSTON BEER INC CL A COM 100557107 5,671 386 7.30 798 -4.77 0.0061
2017-02-08 2016-12-31 13F BOSTON BEER INC CL A COM 100557107 5,285 304 6.10 838 -6.58 0.0066
2016-08-11 2016-06-30 13F BOSTON BEER INC CL A COM 100557107 4,981 43 0.87 897 1.01 0.0077
2016-05-11 2016-03-31 13F BOSTON BEER INC CL A COM 100557107 4,938 -172 -3.37 888 -2.09 0.0079
2016-02-05 2015-12-31 13F BOSTON BEER INC CL A COM 100557107 5,110 -30 -0.58 907 -16.25 0.0089
2015-11-12 2015-09-30 13F BOSTON BEER INC CL A COM 100557107 5,140 -4,538 -46.89 1,083 -51.78 0.0103
2015-08-13 2015-06-30 13F BOSTON BEER INC CL A COM 100557107 9,678 4,873 101.42 2,246 74.79 0.0096
2015-05-15 2015-03-31 13F BOSTON BEER INC CL A COM 100557107 4,805 -9,693 -66.86 1,285 -69.39 0.0109
2015-02-13 2014-12-31 13F BOSTON BEER INC CL A COM 100557107 14,498 7,231 99.50 4,198 160.42 0.0182
2014-10-21 2014-09-30 13F BOSTON BEER INC CL A COM 100557107 7,267 35 0.48 1,612 -0.25 0.0142
2014-08-12 2014-06-30 13F BOSTON BEER INC CL A COM 100557107 7,232 -99 -1.35 1,616 -9.92 0.0137
2014-05-15 2014-03-31 13F BOSTON BEER INC CL A COM 100557107 7,331 -145 -1.94 1,794 -0.77 0.0137
2014-02-11 2013-12-31 13F BOSTON BEER INC CL A COM 100557107 7,476 -288 -3.71 1,808 -4.64 0.0140
2013-11-12 2013-09-30 13F BOSTON BEER INC CL A COM 100557107 7,764 482 6.62 1,896 52.53 0.0132
2013-08-13 2013-06-30 13F/A-1 BOSTON BEER INC CL A COM 100557107 7,282 7,282 1,243 0.0101
2013-08-08 2013-06-30 13F BOSTON BEER INC CL A COM 100557107 29,116 4,969
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.