Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Mar 13, 2026
Reporting period
Not applicable
Filed with the SEC
Mar 20, 2026
OfficerTax withholding
Context
Classification
tax withholding
Code F — shares delivered to pay exercise price or tax liability
Planned / mechanical clue
Tax mechanics (code F)
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0000887343-26-000107
Filed / recorded
Mar 20, 2026, 11:26 PM UTC
Added to OQRO
Oct 6, 2026, 7:14 PM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
COLUMBIA BANKING SYSTEM, INC.
Issuer CIK
887343
Ticker
COLB
Reporting person
Kumi Yamamoto Baruffi
Relationship
Officer
Officer title
EVP General Counsel, Corp Sec
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Mar 13, 2026
Transaction code
F
Shares / units
937
Price per share
$26.23
Acquired / disposed
Disposed (D)
Shares owned after
53,715
Ownership form
Direct
Amendment
Yes (Form 4/A)
Footnotes from the filing
This Form 4/A amends the Form 4 filed on March 17, 2026 solely to correct the transaction code for the reported disposition from S to F. The transaction represents shares withheld by the issuer to satisfy tax obligations in connection with equity award vesting.