O'Brien Dana C. 4

What Happened

Dana C. O'Brien, a director of STERLING INFRASTRUCTURE, sold a total of 4,000 shares in open-market/private sales across three transactions, generating aggregate proceeds of $1,610,000. The trades were: 1,000 shares at $390.00 on 2026-02-06 ($390,000), 1,000 shares at $400.00 on 2026-02-06 ($400,000), and 2,000 shares at $410.00 on 2026-02-09 ($820,000). These were all sales (transaction code S).

Key Details

• Transaction dates and prices:
  • 2026-02-06: 1,000 shares @ $390.00 — $390,000
  • 2026-02-06: 1,000 shares @ $400.00 — $400,000
  • 2026-02-09: 2,000 shares @ $410.00 — $820,000
• Total shares sold: 4,000; total proceeds: $1,610,000.
• Shares owned after transaction: Not specified in the Form 4 filing.
• Footnotes of note:
  • F1: Sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2025.
  • F2: Of the shares referenced, 751 shares remain subject to transfer restrictions and may be forfeitable under certain circumstances.
• Filing date: Form filed 2026-02-10 (no late-filing flag noted in the filing).

Context

• These were pre-planned dispositions under a 10b5-1 plan, which means the trades were executed according to a previously established schedule rather than timed to public developments. Sales by insiders can be routine (for diversification or liquidity) and do not by themselves indicate company performance.