Arkolith/Insider Trading/COLB/Form 4

Moore Devine David

EVP Chief Marketing OfficerCOLUMBIA BANKING SYSTEM, INC. (COLB) · full profile →Form 4 · filed Jun 10, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$115K
Net Open-Market Flow
-$115K
Transactions
2
2 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jun 8, 2026Sell(S)60$29.77$2K22K
Jun 8, 2026Sell(S)4K$29.77$114K19K

Transaction Codes

S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001798077-26-000005) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML