Builders FirstSource (BLDR) insider buying and selling
Every Table I transaction reported by directors and officers of S&P 500 companies on SEC Form 4 filings (2 business days to file): each row labeled with its official transaction code, nothing filtered out beforehand.
Open-market purchases (code P) are the rare signal, in green; sales (code S) are common and often pre-scheduled (10b5-1). Table II (derivatives) is not included: its prices are exercise prices, not market values. Guide: insider buying.
| Date | Ticker | Insider | Role | Shares | Price | Amount | % of stake | Type / filing |
|---|
Download these transactions as CSV No account, no sign-up. The data is public: it comes from SEC Form 4 filings.
Builders FirstSource, Inc. (BLDR) insider buying and selling: 1 purchase, 2 sales
90 Form 4 Table I transactions filed with the SEC by Builders FirstSource, Inc. insiders between 2025-08-26 and 2026-10-20 (15-month history): 1 open-market purchase and 2 sales, plus 87 transactions under other Form 4 codes, broken down one by one below. The largest open-market trade is a purchase of $4.4M by Levy Paul S on 2026-03-13.
Builders FirstSource insider buying and selling over the last 12 months
Between Oct 21, 2025 and Oct 20, 2026, Builders FirstSource insiders filed 1 purchase worth $4.4M and 1 sale worth $391k on the open market. The net balance is on the buy side: $4.0M more bought than sold.
The biggest buyer was Levy Paul S (Director): $4.4M in 1 purchase, the only buyer. The biggest seller was Rush David E (Director): $391k in 1 sale, the only seller.
The largest trade of the period was a purchase of $4.4M on Mar 13, 2026, by Levy Paul S (Director). Form 4 on sec.gov (0001193125-26-108577).
The only sale does not carry the 10b5-1 plan flag on the Form 4 (sales scheduled months ahead).
The last three months show 0 purchases and 0 sales, against 0 and 1 in the three before. The latest purchase is from Mar 13, 2026; the latest sale from May 8, 2026.
Against its sector (Industrials, 75 companies with an insider page on this site), over the same dates the median is 8 sales and 0 purchases on the open market. Builders FirstSource has more sales than 1 of the other 74, ranks 2 of 75 by net dollars bought, and 28 of the 75 have at least one purchase, Builders FirstSource included.
The 20 most important trades
The only open-market purchase first, then the rest, each type from largest to smallest. The full history is in the tool above, already searched.
See all 90 BLDR trades in the full history →
| Trade date | Filed | Insider | Role | Amount | Code | Filing |
|---|---|---|---|---|---|---|
| 2026-03-13 | 2026-03-16 | Levy Paul S | Director | $4.4M | P — Open-market purchaseForm 4 footnoteF1 This transaction was executed in multiple open market purchases at an average price of $87.73 per share. | SEC |
| 2026-05-08 | 2026-05-12 | Rush David E | Director | $391k | S — Open-market saleForm 4 footnoteF1 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. | SEC |
| 2025-08-22 | 2025-08-26 | Johnson Timothy D | EVP & General Counsel | $181k | S — Open-market saleForm 4 footnoteF1 This transaction was executed in multiple trades at prices ranging from $144.83 to $144.87 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. | SEC |
| 2025-10-01 | 2025-10-03 | Rush David E | Director | $2.9M | A — Grant or awardForm 4 footnoteF1 Reflects the vesting of performance-based restricted stock units granted pursuant to the Corporation's 2014 Incentive Plan. | SEC |
| 2025-10-01 | 2025-10-03 | Rush David E | Director | $1.6M | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF2 Reflects shares withheld to pay tax withholding requirements on vesting of performance-based restricted stock units and previously granted restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Jackson Peter M. | President & CEO | $749k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Herron Stephen J | Chief Operating Officer | $513k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Robins Scott L | President - West Division | $445k | F — Tax withholding (shares surrendered for taxes) Indirect holding, through: By trust Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Beckmann Pete | EVP & CFO | $338k | F — Tax withholding (shares surrendered for taxes) Indirect holding, through: By spouse Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Hiller Michael | Chief Talent Officer | $290k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Vaughn Paul | President - Central Division | $231k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-06-13 | 2026-06-16 | Narayan Gayatri | President - Tech & Digital | $221k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF1 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Rush David E | Director | $205k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF1 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Vance Todd | President - East Division | $150k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
| 2026-06-01 | 2026-06-02 | Levy Paul S | Director | $80k | A — Grant or awardForm 4 footnoteF1 Reflects acquisition of shares in lieu of cash compensation for services as a director under the Corporation's 2026 Incentive Plan pursuant to the Corporation's Amended and Restated Director Compensation Policy. | SEC |
| 2026-03-01 | 2026-03-03 | Levy Paul S | Director | $80k | A — Grant or awardForm 4 footnoteF1 Reflects acquisition of shares in lieu of cash compensation for services as a director under the Corporation's 2014 Incentive Plan pursuant to the Corporation's Amended and Restated Director Compensation Policy. | SEC |
| 2025-12-01 | 2025-12-03 | Levy Paul S | Director | $80k | A — Grant or awardForm 4 footnoteF1 Reflects acquisition of shares in lieu of cash compensation for services as a director under the Corporation's 2014 Incentive Plan pursuant to the Corporation's Amended and Restated Director Compensation Policy. | SEC |
| 2025-09-01 | 2025-09-03 | Levy Paul S | Director | $80k | A — Grant or awardForm 4 footnoteF1 Reflects acquisition of shares in lieu of cash compensation for services as a director under the Corporation's 2014 Incentive Plan pursuant to the Corporation's Amended and Restated Director Compensation Policy. | SEC |
| 2026-03-15 | 2026-03-17 | Cope Jonathan P | President - Commercial | $65k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF1 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted restricted stock units. | SEC |
| 2026-03-15 | 2026-03-17 | Trester Matthew | Principal Accounting Officer | $57k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF3 Reflects shares withheld to pay tax withholding requirements on vesting of previously granted performance-based restricted stock units and restricted stock units. | SEC |
The period balance: money in, money out
Across the Form 4 filings submitted between Aug 26, 2025 and Oct 20, 2026, Builders FirstSource, Inc. open-market activity adds up to 1 purchase worth $4.4M and 2 sales worth $572k. The net balance is $3.8M on the buy side.
Only codes P and S count, where an insider puts in or takes out their own money. A buying balance like Builders FirstSource, Inc.'s is the less common case in the S&P 500: its insiders are already paid in stock and still put in their own money. It is not a recommendation to buy or sell: it is what was filed.
Every transaction, code by code
| Code | What it means | Trades | Reported amount |
|---|---|---|---|
| A | Grant or award | 69 | $4.3M |
| F | Tax withholding (shares surrendered for taxes) | 12 | $4.9M |
| G | Gift | 6 | $0 |
| S | Open-market sale | 2 | $572k |
| P | Open-market purchase | 1 | $4.4M |
| Total | Everything filed in the period | 90 | $14.1M |
40 of the 90 rows carry no usable amount on the Form 4: they count as trades and add $0. The code labels come from the SEC index.
Who has traded
Over the 15 months of history, 24 distinct people or entities have filed Builders FirstSource, Inc. transactions: 1 bought on the open market and 2 sold. Counted by CIK, the fixed number the SEC gives each filer, and not by name, which each filer types their own way.
| Filer | Role | Transactions | Bought (count) | Sold (count) | Last filed |
|---|---|---|---|---|---|
| Levy Paul S | Director | 7 | $4.4M (1) | — | 2026-09-14 |
| Rush David E | Director | 6 | — | $391k (1) | 2026-05-18 |
| Johnson Timothy D | EVP & General Counsel | 2 | — | $181k (1) | 2025-08-26 |
| Boydston Cory Jacobs | Director | 6 | — | — | 2026-09-14 |
| Charles Dirkson R | Director | 6 | — | — | 2026-09-14 |
| Hayes William B | Director | 6 | — | — | 2026-09-14 |
| Oleary James | Director | 6 | — | — | 2026-09-14 |
| Renz Maria | Director | 6 | — | — | 2026-09-14 |
Shown here are the 8 who moved the most money, out of 24. The rest are in the full history, one link above. The name links to all their trades, in any company. "Transactions" counts any code; the money, open market only. Role: from their latest filing.
Month by month
By the month the trade was executed, not the month it was filed; months with no trades show zero. The busiest month was Aug 2025: 0 purchases and 1 sale, worth $181k. 12 of the 15 months have none.
| Month | Purchases | Amount | Sales | Amount |
|---|---|---|---|---|
| Aug 2025 | 0 | $0 | 1 | $181k |
| Sep 2025 | 0 | $0 | 0 | $0 |
| Oct 2025 | 0 | $0 | 0 | $0 |
| Nov 2025 | 0 | $0 | 0 | $0 |
| Dec 2025 | 0 | $0 | 0 | $0 |
| Jan 2026 | 0 | $0 | 0 | $0 |
| Feb 2026 | 0 | $0 | 0 | $0 |
| Mar 2026 | 1 | $4.4M | 0 | $0 |
| Apr 2026 | 0 | $0 | 0 | $0 |
| May 2026 | 0 | $0 | 1 | $391k |
| Jun 2026 | 0 | $0 | 0 | $0 |
| Jul 2026 | 0 | $0 | 0 | $0 |
| Aug 2026 | 0 | $0 | 0 | $0 |
| Sep 2026 | 0 | $0 | 0 | $0 |
| Oct 2026 | 0 | $0 | 0 | $0 |
The last month may be partial: a Form 4 is filed up to two business days later. The table does not say whether the pattern is good or bad; it says when it happened.
Builders FirstSource, Inc. (BLDR) analysis page →
Other Industrials companies with insider trades
All 500 are listed in the section index →
Which insiders are buying their own company stock →
How to read this data
None of the 2 sales in the table is flagged as scheduled (10b5-1 plan), the kind signed months ahead and executed automatically. Builders FirstSource's single open-market purchase (code P) is the rare signal: insiders are already paid in stock, so buying more means putting in their own money. The latest filing is from Oct 20, 2026, and a Form 4 arrives up to two business days after the trade.
20 of the 20 rows in the table carry footnotes from the Form 4 itself, folded into the code column and copied verbatim; a row with no footnote means the filing has none.
Guide: Insider buying · all guides
What is behind these trades
The concepts on this page, explained from scratch in the Academy. Free, no account.
- What the efficiency hypothesis says and what it does NOT sayIf an insider's purchase is public and anyone can read it, is there any information left in it? That is the exact question that brings people here.
- Who really moves the market: the types of investorWho sits on the other side of each order, and where a company's own insiders fit among them.
- Supply, demand and price: why it rises and falls constantlyHow a piece of news ends up inside the price, and why the reaction to a filed sale is rarely the one you would expect.
Source: SEC EDGAR Form 4. This is a list of public facts, not financial advice or a recommendation to buy or sell.