Arkolith/Insider Trading/GLDD/Form 4

Shanahan Kathleen M

DirectorGreat Lakes Dredge & Dock CORP (GLDD) · full profile →Form 4 · filed Jan 20, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
4
2 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jan 15, 2026Option exercise(M)3K—$076K
Jan 15, 2026Option exercise(M)3K—$073K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jan 15, 2026Option exercise(M)3K—$012K
Jan 15, 2026Option exercise(M)3K—$09K

Transaction Codes

M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-016755) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML