Updated Jul 16, 2026 · Last SEC filing 2026-06-16
Builders FirstSource, Inc. (BLDR) has filed 25 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-16. 3 Form 8-K material event filings were reported by BLDR in the last 90 days. 1 Form 144 notices of proposed sale were filed for BLDR stock. InsiderAlpha tracks every BLDR SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Retail-Lumber & Other Building Materials Dealers (SIC 5211) |
|---|---|
| SEC CIK | 0001316835 |
| Form 4 filings (90d) | 25 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-06-16 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Narayan Gayatri | President - Tech & Digital | F — Tax withholding / forfeiture | 2.8K | $77.77 | $221K | SEC | |
| Herron Stephen J | Chief Operating Officer | G — Bona-fide gift | 850 | $0.00 | — | SEC | |
| Hiller Michael | COO-Designate | G — Bona-fide gift | 900 | $0.00 | — | SEC | |
| Boydston Cory Jacobs | Insider | A — Grant or award | 409 | $76.26 | $31K | SEC | |
| Steinke Craig Arthur | Insider | A — Grant or award | 491 | $76.26 | $37K | SEC | |
| Hayes William B | Insider | A — Grant or award | 508 | $76.26 | $39K | SEC | |
| ALEXANDER MARK A | Insider | A — Grant or award | 409 | $76.26 | $31K | SEC | |
| Renz Maria | Insider | A — Grant or award | 426 | $76.26 | $32K | SEC | |
| CHRISTOPHE CLEVELAND A | Insider | A — Grant or award | 491 | $76.26 | $37K | SEC | |
| LEVY PAUL S | Insider | A — Grant or award | 1.0K | $76.26 | $80K | SEC | |
| OLEARY JAMES | Insider | A — Grant or award | 491 | $76.26 | $37K | SEC | |
| Charles Dirkson R | Insider | A — Grant or award | 409 | $76.26 | $31K | SEC | |
| Charles Dirkson R | Insider | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| Steinke Craig Arthur | Insider | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| OLEARY JAMES | Insider | A — Grant or award | 2.6K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Builders FirstSource, Inc. (BLDR). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Rush David E | 2 | $391K |
| LEVY PAUL S | 2 | $80K |
| OLEARY JAMES | 2 | $37K |
| Boydston Cory Jacobs | 2 | $31K |
| ALEXANDER MARK A | 2 | $31K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in BLDR insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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