Vivienne R. Schiffer's most recent trade in Great Lakes Dredge & Dock Corporation was a trade of 144,817 Common Stock done . Disclosure was reported to the exchange on April 1, 2026.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Great Lakes Dredge & Dock Corp | Schiffer Vivienne R. | SVP, CLO, CCO & Corp Secretary | 01 Apr 2026 | 144,817 | 0 (0%) | 0% | - | Common Stock | ||
| Great Lakes Dredge & Dock Corp | Schiffer R. Vivienne | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Apr 2026 | 28,945 | 144,817 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Mar 2026 | 14,213 | 113,483 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Mar 2026 | 10,454 | 118,418 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 16.93 per share. | 16 Mar 2026 | 3,461 | 110,022 (0%) | 0% | 16.9 | 58,595 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 16.93 per share. | 16 Mar 2026 | 2,546 | 115,872 (0%) | 0% | 16.9 | 43,104 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 16.93 per share. | 16 Mar 2026 | 2,060 | 99,270 (0%) | 0% | 16.9 | 34,876 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 16.93 per share. | 16 Mar 2026 | 2,058 | 107,964 (0%) | 0% | 16.9 | 34,842 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 08 May 2025 | 18,035 | 82,181 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 08 May 2025 | 18,035 | 82,181 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 9.54 per share. | 05 May 2025 | 1,070 | 64,829 (0%) | 0% | 9.5 | 10,208 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 9.54 per share. | 05 May 2025 | 683 | 64,146 (0%) | 0% | 9.5 | 6,516 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 17 Mar 2025 | 14,043 | 62,724 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 17 Mar 2025 | 10,402 | 68,432 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.70 per share. | 17 Mar 2025 | 3,420 | 59,304 (0%) | 0% | 8.7 | 29,754 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.70 per share. | 17 Mar 2025 | 2,533 | 65,899 (0%) | 0% | 8.7 | 22,037 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.70 per share. | 17 Mar 2025 | 1,864 | 48,681 (0%) | 0% | 8.7 | 16,217 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.70 per share. | 17 Mar 2025 | 1,274 | 58,030 (0%) | 0% | 8.7 | 11,084 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 7.04 per share. | 06 May 2024 | 1,070 | 50,545 (0%) | 0% | 7.0 | 7,533 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 15 Mar 2024 | 15,684 | 51,615 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 15 Mar 2024 | 7,752 | 41,994 (0%) | 0% | - | Common Stock | |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.62 per share. | 15 Mar 2024 | 3,051 | 38,943 (0%) | 0% | 8.6 | 26,300 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.62 per share. | 15 Mar 2024 | 3,012 | 35,931 (0%) | 0% | 8.6 | 25,963 | Common Stock |
| Great Lakes Dredge & Dock Corp | Vivienne R. Schiffer | SVP, CLO, CCO & Corp Secretary | Payment of exercise price or tax liability using portion of securities received from the company at price $ 8.70 per share. | 05 Mar 2024 | 895 | 34,242 (0%) | 0% | 8.7 | 7,787 | Common Stock |