Hayes William B 4

What Happened
William B. Hayes, a director of Builders FirstSource, Inc. (BLDR), was granted 2,558 restricted stock units (transaction code A) on May 14, 2026. The award was recorded at $0.00 per share (total $0) and, per the filing, each RSU entitles Hayes to one share of common stock when it vests. The RSUs vest on May 14, 2027. This is a compensation award rather than a market purchase or sale.

Key Details

• Transaction date: 2026-05-14 (reported on Form 4 filed 2026-05-18). Filing appears timely (filed within the two-business-day window).
• Grant: 2,558 restricted stock units (RSUs) at $0.00 per unit; total reported value $0.
• Vesting: RSUs vest on May 14, 2027; each vested RSU converts to one share (per footnote F1).
• Shares owned after transaction: not specified in the filing.
• Footnote: F1 states the RSUs were granted under the Corporation’s 2014 Incentive Plan and entitle the holder to one share per vested RSU.

Context
RSU grants to directors are a routine form of compensation and do not represent an immediate buy or sell in the open market. Because RSUs typically cannot be sold or transferred until they vest (and may be forfeitable), this award is primarily a retention/compensation event rather than a direct signal of insider trading intent.