SEC Form 4
Boston Beer Company (SAM) insider trading
In the 12 months to Oct 24, 2026, one SAM insider reported open-market sales of $642.0K across 1 filing; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $642.0K
- 1 filing · 1 insider
- Open-market purchases
- $0
- 0 filings
Who traded SAM, and when
- Sale
SAM daily close from Oct 24, 2025 to Oct 23, 2026, between $161.08 and $260.05, last $202.28. 1 sale and 0 purchase filings by 1 insider, marked at their filing dates. Michael Spillane, Director: sold $642.0K across 1 filing, first filed Nov 4, 2025, last Nov 4, 2025.
Largest mark · tap a row for others
Michael Spillane · Director
Sale $642,036
3,120 shares at $205.78 avg
Filed Nov 4, 2025
Close on filing date $204.85
Michael Spillane · Director
Director
$642.0K soldOpen-market trades
1 filing in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Michael Spillane | Director | $642.0K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Michael Spillane Director | Sale | 3,120 | $205.78 | $642.0K | 10,877 |
GET /stocks/filings/vX/form-4?tickers=SAM&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SAM"
],
"issuer_cik": "0000949870",
"owner_cik": "0001675782",
"accession_number": "0001675782-25-000003",
"form_type": "4",
"filing_date": "2025-11-04",
"period_of_report": "2025-11-04",
"issuer_name": "BOSTON BEER CO INC",
"issuer_trading_symbol": "SAM",
"owner_name": "Spillane Michael",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2025-11-04",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1152,
"transaction_price_per_share": 205.15,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 12845,
"transaction_value": 236332.80000000002,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price shown is the weighted average sale price for the transactions reported on this line. The range of sale prices for the 1,152 shares is from $204.67 to $205.61. The Filing Person will provide full information regarding the number of shares sold at each separate price upon request of the SEC, the Registrant, or a shareholder of the Registrant."
},
{
"id": "F2",
"description": "The shares reported include 10,673 shares of restricted stock subject to vesting conditions."
}
]
},
{
"tickers": [
"SAM"
],
"issuer_cik": "0000949870",
"owner_cik": "0001675782",
"accession_number": "0001675782-25-000003",
"form_type": "4",
"filing_date": "2025-11-04",
"period_of_report": "2025-11-04",
"issuer_name": "BOSTON BEER CO INC",
"issuer_trading_symbol": "SAM",
"owner_name": "Spillane Michael",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2025-11-04",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1968,
"transaction_price_per_share": 206.15,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 10877,
"transaction_value": 405703.2,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F3",
"description": "The price shown is the weighted average sale price for the transactions reported on this line. The range of sale prices for the 1,968 shares is from $205.75 to $206.50. The Filing Person will provide full information regarding the number of shares sold at each separate price upon request of the SEC, the Registrant, or a shareholder of the Registrant."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 24 records
- Option exercises1 record
- Tax withholding9 records
- Grants and awards14 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SAM every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.