Arkolith/Insider Trading/COLB/Form 4

Stein Clint

Chair, President, CEO, DirectorCOLUMBIA BANKING SYSTEM, INC. (COLB) · full profile →Form 4 · filed Jan 22, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
4
4 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jan 20, 2026Disposed to issuer(D)4K—$0139K
Jan 20, 2026Tax withholding(F)6K$28.35$160K123K
Jan 20, 2026Disposed to issuer(D)3K—$0129K
Jan 20, 2026Tax withholding(F)8K$28.35$216K132K

Transaction Codes

D
Disposition to the issuer
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000887343-26-000013) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML