GUNSTEN CHRISTOPHER 4/A

What Happened

• Christopher Gunsten, SVP — Project Services & Fleet Engineer at Great Lakes Dredge & Dock (GLDD), was granted 13,179 restricted stock units (RSUs) on May 8, 2025. This Form 4/A reports an award (transaction code A); no purchase price is applicable for RSU grants. The filing is an amendment to correct the reported vesting start date.

Key Details

• Transaction date: 2025-05-08 (grant of 13,179 RSUs)
• Price: N/A (award/grant; no cash purchase)
• Vesting: Amended filing corrects the vesting start date — vesting begins May 8, 2026 (original Form 4 incorrectly listed March 15, 2026)
• Filing status: This is an amended Form 4 filed March 25, 2026; the original Form 4 was filed May 12, 2025
• Shares owned after transaction: Not disclosed on this Form 4/A
• Footnote: The amendment fixes an administrative error regarding the vesting date (see above)

Context

• RSU grants are compensation awards that convert into shares only when they vest; they are not open-market purchases or sales and don’t necessarily indicate immediate buying or selling by the insider. This amendment is administrative—correcting the vesting schedule rather than changing the number of units granted.