Boston Beer Company Inc
Ownership
Ownership Structure
Who owns Boston Beer Company Inc (SAM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.4% of the shares are freely tradable; institutional investors hold 95.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.00 | 1,015,254 | +31.8 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 6.00 | 609,360 | -4.0 | 06/30/2026 |
| AQR Capital Management LLC | 5.32 | 539,988 | -17.2 | 06/30/2026 |
| UBS Group AG | 4.28 | 434,656 | +98.8 | 06/30/2026 |
| American Century Companies Inc | 3.79 | 385,326 | +33.8 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.41 | 345,822 | +1.4 | 06/30/2026 |
| Arrowstreet Capital Limited Partnership | 3.16 | 321,080 | +30.9 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 3.16 | 320,885 | +17.3 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 4.32 | 438,724 | +0.0 | 09/30/2026 |
| Avantis US Small Cap Value ETF | 3.80 | 386,179 | +0.2 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Koch C James | Chairman, President & CEO | 16,483 | 3,552,087 $ | Oct 28, 2026 | direct |
| Fisher Cynthia A | Director | 6,097 | 1,313,904 $ | Oct 30, 2026 | direct |
| Stranksy Allison Robl | Chief Marketing Officer | 4,993 | 1,075,992 $ | Oct 28, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | Fisher Cynthia A | Director | Other | 1,698 | 140.05 | 237,805 |
| Oct 28, 2026 | Stranksy Allison Robl | Chief Marketing Officer | Other | 4,993 | 0.00 | – |
| Oct 28, 2026 | Koch C James | Chairman, President & CEO | Other | 1,511 | 191.10 | 288,752 |
| Oct 28, 2026 | Koch C James | Chairman, President & CEO | Other | 2,745 | 169.85 | 466,238 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.