Judi Giem - 22 Jul 2025 Form 4 Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Reporting relationship: EVP CHRO
Issuer ticker: COLB
Reported as of: 22 Jul 2025
Net transaction value: +$350,072
SEC form: 4
Accepted by SEC: 23 Jul 2025, 18:46:31 UTC
Prior SEC filing: 09 Jun 2025
Next SEC filing: 20 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Lisa M. White, Attorney-in-fact

Key filing fact

Judi Giem filed Form 4 for COLUMBIA BANKING SYSTEM, INC. (COLB) on 23 Jul 2025.

Key facts

This page summarizes Judi Giem's Form 4 filing for COLUMBIA BANKING SYSTEM, INC. (COLB).
3 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 23 Jul 2025, 18:46.

Change

Previous filing in this sequence was filed on 09 Jun 2025.
Current net transaction value: +$350,072.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001813483 Primary reporting owner

Giem Judi

Relationship: EVP CHRO
Address: C/O COLUMBIA BANKING SYSTEM, INC., 1301 A STREET, TACOMA
Signature: /s/ Lisa M. White, Attorney-in-fact
Signature date: 23 Jul 2025

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

COLB transaction Derivative

Restricted Stock Unit

Award

Transaction value: $175,024
Shares: +7,179
Change %
Price: $24.38
Shares after: 7,179
Date: 22 Jul 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,179
Exercise price
Footnotes: F1

COLB transaction Derivative

Performance Restricted Stock Unit

Award

Transaction value: $87,524
Shares: +3,590
Change %
Price: $24.38
Shares after: 3,590
Date: 22 Jul 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,590
Exercise price
Footnotes: F2

COLB transaction Derivative

Performance Restricted Stock Unit

Award

Transaction value: $87,524
Shares: +3,590
Change %: +100%
Price: $24.38
Shares after: 7,180
Date: 22 Jul 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,590
Exercise price
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Restricted stock units granted 07/22/2025. The grant will vest 33.33% per year over three years.

Footnote F2

Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.

Footnote F3

Performance restricted stock units granted 07/22/2025. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.