BOSTON BEER CO INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for BOSTON BEER CO INC (SAM), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are SAM insiders buying or selling?
In the last 12 months, BOSTON BEER CO INC insiders reported 0 open-market purchases ($0) and 1 sale ($642.0K) — net selling of $642.0K. Since January 2018, Trabud has recorded 317 Form 4 filings for SAM: 0 buys ($0) and 317 sells ($790.2M).
Source: SEC EDGAR Form 4
What stands out
- No BOSTON BEER CO INC insider made an open-market purchase in the last 12 months; the 1 reported open-market sale totaled $642.0K.
Key Statistics (January 2018 – Nov 4, 2025)
Total Form 4 filings
317
SEC EDGAR
Insider filers
17
Insider buys (0)
$0
Insider sells (317)
$790.2M
Insider sentiment
Net sellingNet insider flow of $790.2M in net selling since January 2018, and $642.0K in net selling over the last 12 months.
Recent SAM insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Nov 4, 2025 | Michael Spillane | Director | Sale | 3.1K | $205.78 | $642.0K | SEC ↗ |
| Aug 11, 2025 | Annette N Fritsch | VP of Product Design and R&D | Sale | 600 | $219.24 | $131.5K | SEC ↗ |
| Mar 17, 2025 | Jean Michel Valette | Director | Sale | 3.5K | $228.45 | $799.6K | SEC ↗ |
| Jan 3, 2025 | Carolyn L. O'Boyle | Chief People Officer | Sale | 62 | $301.76 | $18.7K | SEC ↗ |
| Dec 3, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 62 | $316.24 | $19.6K | SEC ↗ |
| Nov 4, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 62 | $292.74 | $18.1K | SEC ↗ |
| Oct 2, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 62 | $288.86 | $17.9K | SEC ↗ |
| Sep 4, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 63 | $274.90 | $17.3K | SEC ↗ |
| Aug 14, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 63 | $274.90 | $17.3K | SEC ↗ |
| Apr 2, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 101 | $303.49 | $30.7K | SEC ↗ |
| Mar 4, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 102 | $308.45 | $31.5K | SEC ↗ |
| Feb 2, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 102 | $350.72 | $35.8K | SEC ↗ |
| Jan 3, 2024 | Carolyn L. O'Boyle | Chief People Officer | Sale | 102 | $344.83 | $35.2K | SEC ↗ |
| Dec 4, 2023 | Carolyn L. O'Boyle | Chief People Officer | Sale | 102 | $354.90 | $36.2K | SEC ↗ |
| Nov 14, 2023 | Carolyn L. O'Boyle | Chief People Officer | Sale | 102 | $333.96 | $34.1K | SEC ↗ |
| Aug 14, 2023 | Samuel A. Calagione III | Founder & Brewer, Dogfish Head | Sale | 27.0K | $359.13 | $9.7M | SEC ↗ |
| Jul 31, 2023 | John C Geist | Chief Sales Officer | Sale | 3.5K | $353.00 | $1.2M | SEC ↗ |
| Jun 6, 2023 | John C Geist | Chief Sales Officer | Sale | 10.0K | $341.35 | $3.4M | SEC ↗ |
| May 24, 2023 | David A Burwick | President and CEO | Sale | 1.6K | $326.38 | $536.6K | SEC ↗ |
| Mar 7, 2023 | Annette N Fritsch | VP of Product Design and R&D | Sale | 220 | $318.37 | $70.0K | SEC ↗ |
| Mar 2, 2023 | John C Geist | Chief Sales Officer | Sale | 646 | $320.14 | $206.8K | SEC ↗ |
| Jan 13, 2023 | Carolyn L. O'Boyle | Chief People Officer | Sale | 50 | $350.00 | $17.5K | SEC ↗ |
| Dec 2, 2022 | Carolyn L. O'Boyle | Chief People Officer | Sale | 50 | $386.43 | $19.3K | SEC ↗ |
| Nov 2, 2022 | Carolyn L. O'Boyle | Chief People Officer | Sale | 50 | $377.52 | $18.9K | SEC ↗ |
| Oct 26, 2022 | John C Geist | Chief Sales Officer | Sale | 5.0K | $412.73 | $2.1M | SEC ↗ |
Showing the 25 most recent of 317 Form 4 filings for BOSTON BEER CO INC.
Most active SAM insiders
- James C Koch152 filings
- Cynthia A Fisher26 filings
- David L. Grinnell25 filings
- Carolyn L. O'Boyle19 filings
- John C Geist17 filings
Ask anything about SAM insider activity
Use Trabud's AI agent to query BOSTON BEER CO INC's Form 4 history in plain English — "Show me SAM CEO purchases this year" or compare it against any other ticker.
Open the AI agentSAM insider trading FAQ
Are BOSTON BEER CO INC insiders buying or selling?
In the last 12 months, BOSTON BEER CO INC insiders reported 0 open-market purchases ($0) and 1 sale ($642.0K) — net selling of $642.0K. Since January 2018, Trabud has recorded 317 Form 4 filings for SAM: 0 buys ($0) and 317 sells ($790.2M). Over the full record that is net selling of $790.2M.
How many insiders trade SAM stock?
17 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for BOSTON BEER CO INC. The most recent filing was accepted on Nov 4, 2025.
Where does Trabud get SAM insider trading data?
All SAM insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.