| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Beckmann Pete | EVP & CFO | C/O BUILDERS FIRSTSOURCE, INC., 6031 CONNECTION DR., STE. 400, IRVING | /s/ Minator Azemi, by power of attorney | 15 Dec 2025 | 0002043061 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BLDR | Common Stock, par value $0.01 per share | Gift | $0 | -2,000 | -4.8% | $0.000000 | 39,489 | 11 Dec 2025 | By spouse | F1 |
| holding | BLDR | Common Stock, par value $0.01 per share | 27,482 | 11 Dec 2025 | Direct |
| Id | Content |
|---|---|
| F1 | Reflects the gift of common stock to a donor advised fund. |