InsiderTrades

Form 4 for BLDR Builders FirstSource

Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-15 · accession 0001193125-26-111428 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
M 2026-03-17 2026-03-15 BLDR Hiller Michael Chief Talent Off A - Grant $0.00 +16.9K 50.7K +50% $0
2026-03-17 2026-03-15 BLDR Hiller Michael Chief Talent Off F - Tax $88.09 -3,294 53.0K -6% -$290.2K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock, par value $0.01 per share 2026-03-15 A A 5,594 $0.00 56,336 D — —
2 Common Common Stock, par value $0.01 per share 2026-03-15 A A 11,352 $0.00 50,742 D — —
3 Common Common Stock, par value $0.01 per share 2026-03-15 F D 3,294 $88.09 53,042 D — —