GUNSTEN CHRISTOPHER 4

What Happened
Christopher Gunsten, SVP – Project Services & Fleet Engineer at Great Lakes Dredge & Dock (GLDD), received two awards of performance-based restricted stock (total 21,090 shares) that vested on March 16, 2026. To satisfy tax obligations on those awards, 10,394 shares were withheld/sold at $16.93 per share for a total of $175,971. Net effect: Gunsten acquired 21,090 shares via award and had 10,394 shares withheld for taxes, a net increase of 10,696 shares.

Key Details

• Transaction date: March 16, 2026. Filing date: March 18, 2026 (timely within the Form 4 reporting window).
• Awards received: 12,646 shares (performance RSUs from grant dated Mar 15, 2023) and 8,444 shares (performance RSUs from grant dated Mar 15, 2024). (Footnotes F1 and F2)
• Shares withheld/sold for tax withholding: 2,204 shares ($37,314), 4,091 shares ($69,261), 1,367 shares ($23,143), and 2,732 shares ($46,253) — all at $16.93 per share, totaling $175,971. (Transaction code F = tax withholding)
• Shares owned after the transaction: Not stated in this filing.
• Filing timeliness: Report filed promptly (no late-filings flag).

Context

• These transactions reflect vesting of performance-based restricted stock units (RSUs) and automated tax-withholding (not an open-market purchase decision). Tax-withholding dispositions are routine and do not necessarily indicate insider sentiment.
• Awards (code A) are acquisitions but are distinct from market purchases; the withheld/sold shares (code F) are to cover taxes on vesting.