GUNSTEN CHRISTOPHER 4
4 · Great Lakes Dredge & Dock CORP · Filed Mar 18, 2026
Research Summary
AI-generated summary of this filing
Great Lakes Dredge (GLDD) SVP Christopher Gunsten Receives Awards & Sells Shares
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.
Insider Transaction Report
Form 4
GUNSTEN CHRISTOPHER
SVP-Proj Svcs & Fleet Engineer
Transactions
- Tax Payment
Common Stock
2026-03-16$16.93/sh−2,204$37,314→ 97,736 total - Award
Common Stock
[F1]2026-03-16+12,646→ 110,382 total - Tax Payment
Common Stock
2026-03-16$16.93/sh−4,091$69,261→ 106,291 total - Tax Payment
Common Stock
2026-03-16$16.93/sh−1,367$23,143→ 104,924 total - Award
Common Stock
[F2]2026-03-16+8,444→ 113,368 total - Tax Payment
Common Stock
2026-03-16$16.93/sh−2,732$46,253→ 110,636 total
Footnotes (2)
- [F1]Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Gunsten's performance-based restricted stock units granted on March 15, 2023.
- [F2]Represents shares awarded pursuant to satisfaction of performance conditions per the terms of Mr. Gunsten's performance-based restricted stock units granted on March 15, 2024.
Signature
/s/Vivienne R. Schiffer, by Power of Attorney|2026-03-18