Arkolith/Insider Trading/GLDD/Form 4

Schiffer Vivienne

SVP, CLO, CCO & Corp SecretaryGreat Lakes Dredge & Dock CORP (GLDD) · full profile →Form 4 · filed Mar 18, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
6
6 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 16, 2026Tax withholding(F)2K$16.93$35K108K
Mar 16, 2026Tax withholding(F)3K$16.93$43K116K
Mar 16, 2026Tax withholding(F)3K$16.93$59K110K
Mar 16, 2026Grant(A)14K——113K
Mar 16, 2026Tax withholding(F)2K$16.93$35K99K
Mar 16, 2026Grant(A)10K——118K

Transaction Codes

F
Shares withheld for taxes
A
Grant / award

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-114344) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML