Schiffer Vivienne
SEC insider (Form 3/4/5 filer). CIK 0001835547. SVP, CLO, CCO & Corp Secretary at Great Lakes Dredge & Dock CORP (GLDD). 19 reported Form 4/5 transactions since Sep 2024; latest on Apr 1, 2026. Located in HOUSTON, TX.
Companies Schiffer Vivienne has filed insider reports for
- Great Lakes Dredge & Dock CORP (GLDD): Officer, SVP, CLO, CCO & Corp Secretary
Schiffer Vivienne
CIK: 0001835547
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Great Lakes Dredge & Dock CORP
Discretionary Trading P&L
Holdings
Transaction History (19 total)
- Apr 1, 2026GLDD
Great Lakes Dredge & Dock CORP
AwardDirect28.9K shares- - Apr 1, 2026GLDD
Great Lakes Dredge & Dock CORP
Tender OfferDirect144.8K shares- - Mar 16, 2026GLDD
Great Lakes Dredge & Dock CORP
Tax PaymentDirect2.1K shares at avg. $16.93$35K - Mar 16, 2026GLDD
Great Lakes Dredge & Dock CORP
Tax PaymentDirect3.5K shares at avg. $16.93$59K - Mar 16, 2026GLDD
Great Lakes Dredge & Dock CORP
AwardDirect14.2K shares- - Mar 16, 2026GLDD
Great Lakes Dredge & Dock CORP
Tax PaymentDirect2.5K shares at avg. $16.93$43K - Mar 16, 2026GLDD
Great Lakes Dredge & Dock CORP
AwardDirect10.5K shares- - Mar 16, 2026GLDD
Great Lakes Dredge & Dock CORP
Tax PaymentDirect2.1K shares at avg. $16.93$35K - Feb 23, 2026GLDD
Great Lakes Dredge & Dock CORP
AwardDirect19.1K shares- - May 8, 2025GLDD
Great Lakes Dredge & Dock CORP
AwardDirect18K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Apr 1, 2026 | GLDD Great Lakes Dredge & Dock CORP | Award | 28,945 | - | $0 | Direct |
| Apr 1, 2026 | GLDD Great Lakes Dredge & Dock CORP | Tender Offer | 144,817 | - | $0 | Direct |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | Tax Payment | 2,060 | $16.93 | $34,876 | Direct |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | Tax Payment | 3,461 | $16.93 | $58,595 | Direct |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | Award | 14,213 | - | $0 | Direct |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | Tax Payment | 2,546 | $16.93 | $43,104 | Direct |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | Award | 10,454 | - | $0 | Direct |
| Mar 16, 2026 | GLDD Great Lakes Dredge & Dock CORP | Tax Payment | 2,058 | $16.93 | $34,842 | Direct |
| Feb 23, 2026 | GLDD Great Lakes Dredge & Dock CORP | Award | 19,149 | - | $0 | Direct |
| May 8, 2025 | GLDD Great Lakes Dredge & Dock CORP | Award | 18,035 | - | $0 | Direct |
1-10 of 19 transactions