Vivienne Schiffer Great Lakes Dredge & Dock Corp (GLDD) insider trading activity

Vivienne Schiffer is SVP, CLO, CCO & Corp Secretary of Great Lakes Dredge & Dock CORP. Currently has a direct ownership of 82,181 shares of GLDD, which is worth approximately $998,499. The most recent transaction as insider was on May 08, 2025, when has been sold 18,035 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 82.2K

24.71% 3M change

62.59% 12M change

Total Value Held $998,499

Vivienne Schiffer Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
May 08 2025	BUY Grant, award, or other acquisition	-	18,035 Added 18.0%	82,181 Common Stock
May 05 2025	SELL Payment of exercise price or tax liability	$16,723 $9.54 p/Share	1,753 Reduced 2.66%	64,146 Common Stock
Mar 17 2025	SELL Payment of exercise price or tax liability	$79,091 $8.7 p/Share	9,091 Reduced 12.12%	65,899 Common Stock
Mar 17 2025	BUY Grant, award, or other acquisition	-	24,445 Added 26.32%	68,432 Common Stock
May 06 2024	SELL Payment of exercise price or tax liability	$7,532 $7.04 p/Share	1,070 Reduced 2.07%	50,545 Common Stock
Mar 15 2024	SELL Payment of exercise price or tax liability	$52,263 $8.62 p/Share	6,063 Reduced 14.44%	35,931 Common Stock
Mar 15 2024	BUY Grant, award, or other acquisition	-	23,436 Added 31.23%	51,615 Common Stock
Mar 05 2024	SELL Payment of exercise price or tax liability	$7,786 $8.7 p/Share	895 Reduced 2.55%	34,242 Common Stock
May 05 2023	SELL Payment of exercise price or tax liability	$7,452 $5.75 p/Share	1,296 Reduced 3.56%	35,137 Common Stock
Mar 15 2023	BUY Grant, award, or other acquisition	-	22,960 Added 38.66%	36,433 Common Stock
Mar 06 2023	SELL Payment of exercise price or tax liability	$6,658 $5.78 p/Share	1,152 Reduced 7.88%	13,473 Common Stock
May 05 2022	BUY Grant, award, or other acquisition	-	7,878 Added 35.45%	14,347 Common Stock
Mar 07 2022	SELL Payment of exercise price or tax liability	$11,558 $14.78 p/Share	782 Reduced 10.78%	6,469 Common Stock
Mar 05 2021	BUY Grant, award, or other acquisition	-	7,251 Added 50.0%	7,251 Common Stock

Vivienne Schiffer

SVP, CLO, CCO & Corp Secretary

Houston, TX

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