| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Rush David E | Director | C/O BUILDERS FIRSTSOURCE, INC., 6031 CONNECTION DR., STE. 400, IRVING | /s/ Minator Azemi, by power of attorney | 2025-12-08 | 0001760672 |
| 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 | -1K | -0.77% | $0.00 | 130K | Dec 4, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Reflects the gift of common stock to a donor advised fund. |