The Boston Beer Company, Inc.
The Boston Beer Company, Inc. (SAM) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SAM · as of Sep 30, 2025
Ownership Breakdown
372
Institutional Holders
▲ 9 vs Q2
$1.67B
Total Inst. Value
▲ $190.31M vs Q2
10.73M
Shares Outstanding
freeFloat 70.48%
7.90M
13F Shares Held
▲ 183,495 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SAM largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC malt beverages | 950.1K | 8.57% | 8.57% | $200.88B | Nov 7, 2025 | ▲ 43.0K |
BLACKROCK, INC. malt beverages | 782.3K | 7.05% | 7.05% | $165.40B | Nov 12, 2025 | ▼ 131.2K |
AQR CAPITAL MANAGEMENT LLC malt beverages | 647.1K | 5.83% | 5.83% | $136.80B | Nov 14, 2025 | ▲ 500.1K |
FMR LLC malt beverages | 389.8K | 3.52% | 3.52% | $82.42B | Nov 13, 2025 | ▼ 67.7K |
DIMENSIONAL FUND ADVISORS LP malt beverages | 265.8K | 2.40% | 2.40% | $56.19B | Nov 12, 2025 | ▲ 3.3K |
STATE STREET CORP malt beverages | 263.3K | 2.37% | 2.37% | $55.66B | Nov 14, 2025 | ▼ 15.4K |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP malt beverages | 258.4K | 2.33% | 2.33% | $54.63B | Nov 13, 2025 | ▲ 19.3K |
MORGAN STANLEY malt beverages | 233.8K | 2.11% | 2.11% | $49.42B | May 27, 2026 | ▲ 140.5K |
FISHER ASSET MANAGEMENT, LLC malt beverages | 231.5K | 2.09% | 2.09% | $48.94B | Nov 12, 2025 | ▼ 615 |
UBS GROUP AG malt beverages | 223.7K | 2.02% | 2.02% | $47.29B | Nov 13, 2025 | ▲ 31.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
29
Increased
+1.38M shares1
New Positions
first time holders20
Decreased
−632.2K shares0
Sold Out
fully exitedNet shares change (top 50)
+743.3K
+1.38M / −632.2K
Net new holders
+10
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SAM insider trading · insider activity
Source: SEC Form 4
12
Buy transactions
2
Sell transactions
6.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Stone Christopher Isaac director | May 27, 2026 | Award | 358 | — | — | 1.4K | Form 4 ↗ |
Stone Christopher Isaac director | May 27, 2026 | Award | 691 | $181.63 | $125.5K | 691 | Form 4 ↗ |
JORDAN JOSEPH HUGH director | May 27, 2026 | Award | 358 | — | — | 1.4K | Form 4 ↗ |
JORDAN JOSEPH HUGH director | May 27, 2026 | Award | 691 | $181.63 | $125.5K | 691 | Form 4 ↗ |
Swanson Cynthia director | May 27, 2026 | Award | 358 | — | — | 1.3K | Form 4 ↗ |
Swanson Cynthia director | May 27, 2026 | Award | 691 | $181.63 | $125.5K | 691 | Form 4 ↗ |
Nemeth Julio N director | May 27, 2026 | Award | 358 | — | — | 1.1K | Form 4 ↗ |
Nemeth Julio N director | May 27, 2026 | Award | 691 | $181.63 | $125.5K | 691 | Form 4 ↗ |
Fisher Cynthia A director | May 27, 2026 | Award | 358 | — | — | 4.4K | Form 4 ↗ |
Fisher Cynthia A director | May 27, 2026 | Award | 691 | $181.63 | $125.5K | 691 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
The Boston Beer Company, Inc. (SAM) is primarily owned by institutional investors, who hold approximately 73.6% of total shares outstanding. Company insiders own approximately 29.52%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of The Boston Beer Company, Inc. is VANGUARD GROUP INC, holding approximately 950,131 shares — equal to 8.57% of outstanding shares — as of September 30, 2025.
A total of 372 institutional investors currently hold SAM stock, with a combined institutional value of approximately $1.67 billion as of the most recent 13F filing period.
Frequently asked questions
SAM ownershipThe Boston Beer Company, Inc. (SAM) is primarily owned by institutional investors, who hold approximately 73.6% of shares. The largest shareholder is VANGUARD GROUP INC with a 8.57% stake. Company insiders hold 29.52%. Data sourced from SEC Form 13F as of September 30, 2025.