SEC Form 4
Builders FirstSource, Inc. (BLDR) insider trading
In the 12 months to Oct 23, 2026, one BLDR insider reported open-market sales of $390.9K across 1 filing; one director bought $4.4M.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $390.9K
- 1 filing · 1 insider
- Open-market purchases
- $4.4M
- 1 filing · Paul S. Levy, Director
Who traded BLDR, and when
- Purchase
- Sale
BLDR daily close from Oct 23, 2025 to Oct 22, 2026, between $50.52 and $128.96, last $57.54. 1 sale and 1 purchase filings by 2 insiders, marked at their filing dates. Paul S. Levy, Director: bought $4.4M across 1 filing, first filed Mar 16, 2026, last Mar 16, 2026. David E. Rush, Director: sold $390.9K across 1 filing, first filed May 12, 2026, last May 12, 2026.
Largest mark · tap a row for others
Paul S. Levy · Director
Purchase $4,386,500
50,000 shares at $87.73 avg
Filed Mar 16, 2026 · traded Mar 13
Close on filing date $87.02
Paul S. Levy · Director
Director
$4.4M boughtDavid E. Rush · Director
Director
$390.9K soldHas Builders FirstSource, Inc.'s CEO sold stock?
No. Peter M. Jackson (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
2 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Paul S. Levy | Director | — | $4.4M | 1 | — | |
| David E. Rush | Director | $390.9K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | David E. Rush Director | Sale | 5,000 | $78.17 | $390.9K | 122,284 | |
traded | Paul S. Levy Director | Purchase | 50,000 | $87.73 | $4.4M | 1,727,191 |
GET /stocks/filings/vX/form-4?tickers=BLDR&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"BLDR"
],
"issuer_cik": "0001316835",
"owner_cik": "0001760672",
"accession_number": "0001193125-26-219363",
"form_type": "4",
"filing_date": "2026-05-12",
"period_of_report": "2026-05-08",
"issuer_name": "Builders FirstSource, Inc.",
"issuer_trading_symbol": "BLDR",
"owner_name": "Rush David E",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, par value $0.01 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-08",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 5000,
"transaction_price_per_share": 78.17,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 122284,
"transaction_value": 390850,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction was executed in multiple trades at prices ranging from $78.14 to $78.25 per share. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request by the SEC staff, the issuer, or a security holder of the issuer."
}
]
},
{
"tickers": [
"BLDR"
],
"issuer_cik": "0001316835",
"owner_cik": "0001110176",
"accession_number": "0001193125-26-108577",
"form_type": "4",
"filing_date": "2026-03-16",
"period_of_report": "2026-03-13",
"issuer_name": "Builders FirstSource, Inc.",
"issuer_trading_symbol": "BLDR",
"owner_name": "LEVY PAUL S",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock, par value $0.01 per share",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-03-13",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 50000,
"transaction_price_per_share": 87.73,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 1727191,
"transaction_value": 4386500,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "This transaction was executed in multiple open market purchases at an average price of $87.73 per share."
}
]
}
]
}
// 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) · 87 records
- Tax withholding12 records
- Grants and awards70 records
- Gifts5 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 BLDR 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.