Arkolith/Insider Trading/GLDD/Form 4

Petterson Lasse

CEO & President, DirectorGreat 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, 2026Grant(A)79K——1.4M
Mar 16, 2026Tax withholding(F)31K$16.93$526K1.4M
Mar 16, 2026Grant(A)95K——1.4M
Mar 16, 2026Tax withholding(F)37K$16.93$630K1.3M
Mar 16, 2026Tax withholding(F)20K$16.93$339K1.3M
Mar 16, 2026Tax withholding(F)16K$16.93$263K1.3M

Transaction Codes

A
Grant / award
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-114291) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML