Arkolith/Insider Trading/COLB/Form 4/A

Lakely Brock

EVP, Chief Accounting OfficerCOLUMBIA BANKING SYSTEM, INC. (COLB) · full profile →Form 4/A · filed Mar 20, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
1
1 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 13, 2026Tax withholding(F)211$26.23$6K11K

Transaction Codes

F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4/A filing (accession 0000887343-26-000106) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4/A XML