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

SecuritySAM / The Boston Beer Company, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership273,612 shares
Latest Disclosed Value $ 63,040,205
Dimensional Fund Advisors Lp reports 6.05% increase in ownership of SAM / The Boston Beer Company, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 273,612 shares of The Boston Beer Company, Inc. (US:SAM) valued at $63,040,205 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 258,001 shares of The Boston Beer Company, Inc.. This represents a change in shares of 6.05% during the quarter. The current value of the position is $45,069,369 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)
2026-05-07 2026-03-31 13F BOSTON BEER CL A 100557107 273,612 15,611 6.05 63,040 25.22 0.0028
2026-02-12 2025-12-31 13F BOSTON BEER CL A 100557107 258,001 -7,778 -2.93 50,344 -10.41 0.0106
2025-11-12 2025-09-30 13F BOSTON BEER CL A 100557107 265,779 3,336 1.27 56,191 12.21 0.0121
2025-08-12 2025-06-30 13F BOSTON BEER CL A 100557107 262,443 1,287 0.49 50,077 -19.72 0.0116
2025-05-13 2025-03-31 13F BOSTON BEER CL A 100557107 261,156 35,394 15.68 62,374 -7.90 0.0155
2025-02-13 2024-12-31 13F BOSTON BEER CL A 100557107 225,762 19,063 9.22 67,723 13.32 0.0163
2024-11-07 2024-09-30 13F BOSTON BEER CL A 100557107 206,699 23,727 12.97 59,761 7.07 0.0145
2024-08-09 2024-06-30 13F BOSTON BEER CL A 100557107 182,972 26,538 16.96 55,814 17.20 0.0146
2024-05-10 2024-03-31 13F BOSTON BEER CL A 100557107 156,434 14,420 10.15 47,622 -2.97 0.0129
2024-02-07 2023-12-31 13F BOSTON BEER CL A 100557107 142,014 7,615 5.67 49,080 -6.25 0.0143
2023-11-09 2023-09-30 13F BOSTON BEER CL A 100557107 134,399 6,642 5.20 52,350 32.85 0.0172
2023-08-09 2023-06-30 13F BOSTON BEER CL A 100557107 127,757 9,802 8.31 39,406 1.64 0.0126
2023-05-12 2023-03-31 13F BOSTON BEER CL A 100557107 117,955 7,878 7.16 38,771 107,597.22 0.0131
2023-02-09 2022-12-31 13F BOSTON BEER CL A 100557107 110,077 3,703 3.48 36 -99.90 0.0107
2022-11-10 2022-09-30 13F BOSTON BEER CL A 100557107 106,374 21,599 25.48 34,432 34.04 0.0132
2022-08-12 2022-06-30 13F BOSTON BEER CL A 100557107 84,775 15,430 22.25 25,688 -4.64 0.0092
2022-05-13 2022-03-31 13F BOSTON BEER CLA 100557107 69,345 5,488 8.59 26,938 -16.49 0.0083
2022-02-09 2021-12-31 13F BOSTON BEER CLA 100557107 63,857 -1,714 -2.61 32,257 -3.50 0.0098
2021-11-12 2021-09-30 13F BOSTON BEER CLA 100557107 65,571 -690 -1.04 33,427 -50.58 0.0108
2021-08-12 2021-06-30 13F BOSTON BEER CLA 100557107 66,261 -3,682 -5.26 67,643 -19.82 0.0214
2021-05-14 2021-03-31 13F BOSTON BEER CLA 100557107 69,943 -43,758 -38.49 84,368 -25.37 0.0279
2021-03-08 2020-12-31 13F/A-2 BOSTON BEER CLA 100557107 113,701 -51,319 -31.10 113,053 -22.44 0.0408
2021-02-11 2020-12-31 13F BOSTON BEER CLA 100557107 113,701 -51,319 113,053 40,828.7345
2020-11-12 2020-09-30 13F BOSTON BEER CLA 100557107 165,020 -9,048 -5.20 145,770 56.04 0.0618
2020-08-13 2020-06-30 13F BOSTON BEER CLA 100557107 174,068 -46,595 -21.12 93,418 15.18 0.0411
2020-05-14 2020-03-31 13F BOSTON BEER CLA 100557107 220,663 -7,144 -3.14 81,105 -5.78 0.0423
2020-02-14 2019-12-31 13F BOSTON BEER CLA 100557107 227,807 -4,077 -1.76 86,078 1.96 0.0314
2019-11-12 2019-09-30 13F BOSTON BEER CLA 100557107 231,884 -1,176 -0.50 84,420 -4.11 0.0328
2019-08-13 2019-06-30 13F BOSTON BEER CLA 100557107 233,060 -193 -0.08 88,037 28.06 0.0342
2019-08-12 2019-03-31 13F/A-2 BOSTON BEER CLA 100557107 233,253 543 0.23 68,746 22.66 0.0274
2019-05-10 2019-03-31 13F BOSTON BEER CLA 100557107 233,253 543 68,746
2019-02-26 2018-12-31 13F/A-1 BOSTON BEER CLA 100557107 232,710 6,864 3.04 56,045 -13.69 0.0254
2019-02-13 2018-12-31 13F BOSTON BEER CLA 100557107 232,710 6,864 56,045
2018-11-13 2018-09-30 13F BOSTON BEER CLA 100557107 225,846 1,000 0.44 64,934 -3.64 0.0247
2018-08-10 2018-06-30 13F BOSTON BEER CLA 100557107 224,846 -6,914 -2.98 67,386 53.80 0.0269
2018-05-11 2018-03-31 13F BOSTON BEER CLA 100557107 231,760 356 0.15 43,814 -0.92 0.0183
2018-02-12 2017-12-31 13F BOSTON BEER CLA 100557107 231,404 -8,960 -3.73 44,221 17.78 0.0183
2017-11-13 2017-09-30 13F BOSTON BEER CLA 100557107 240,364 13,181 5.80 37,546 25.06 0.0164
2017-08-11 2017-06-30 13F BOSTON BEER CLA 100557107 227,183 32,822 16.89 30,023 6.79 0.0139
2017-05-12 2017-03-31 13F BOSTON BEER CLA 100557107 194,361 6,622 3.53 28,115 -11.83 0.0134
2017-02-09 2016-12-31 13F BOSTON BEER CLA 100557107 187,739 5,170 2.83 31,888 12.50 0.0159
2016-11-10 2016-09-30 13F BOSTON BEER CLA 100557107 182,569 9,812 5.68 28,344 -4.06 0.0153
2016-08-09 2016-06-30 13F BOSTON BEER CLA 100557107 172,757 785 0.46 29,544 -7.17 0.0170
2016-05-13 2016-03-31 13F BOSTON BEER CLA 100557107 171,972 100,495 140.60 31,826 120.52 0.0191
2016-02-10 2015-12-31 13F BOSTON BEER CLA 100557107 71,477 5,491 8.32 14,432 3.83 0.0090
2015-11-13 2015-09-30 13F BOSTON BEER CLA 100557107 65,986 11,176 20.39 13,899 9.30 0.0091
2015-08-14 2015-06-30 13F BOSTON BEER CLA 100557107 54,810 5,284 10.67 12,716 -3.98 0.0078
2015-05-14 2015-03-31 13F BOSTON BEER CLA 100557107 49,526 711 1.46 13,243 -6.30 0.0084
2015-02-06 2014-12-31 13F BOSTON BEER CLA 100557107 48,815 1,804 3.84 14,134 35.56 0.0093
2014-11-13 2014-09-30 13F BOSTON BEER CLA 100557107 47,011 11,408 32.04 10,426 31.01 0.0074
2014-08-08 2014-06-30 13F BOSTON BEER CLA 100557107 35,603 6,284 21.43 7,958 10.91 0.0055
2014-05-14 2014-03-31 13F BOSTON BEER CLA 100557107 29,319 5,106 21.09 7,175 22.57 0.0054
2014-02-12 2013-12-31 13F BOSTON BEER CLA 100557107 24,213 -1,000 -3.97 5,854 -4.92 0.0046
2013-11-13 2013-09-30 13F BOSTON BEER CLA 100557107 25,213 2,265 9.87 6,157 57.23 0.0053
2013-08-15 2013-06-30 13F BOSTON BEER CLA 100557107 22,948 22,948 3,916 0.0037
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.