COLB

Nasdaq

COLUMBIA BANKING SYSTEM, INC.

Latest disclosureSeptember 15, 2026

Insider score Why 4?: 4/ 100
Qualifying buys · 30d: $0

1 purchases · 2 sales

Price by TradingView

Insider transactions 21

Limited filing history

Filters

Last 30 daysNo qualifying insider buying. No qualifying insider sales.

Sale disclosed

Devine David Moore

EVP Chief Marketing Officer

Common Stock

Reported value: $1.79K
Reported price: $29.77 / share

Sale disclosed

Devine David Moore

EVP Chief Marketing Officer

Common Stock

Reported value: $113.5K
Reported price: $29.775 / share

Reporting insider	Security / transaction	Amount / price	Value	Traded / disclosed	Source
EVP Chief Marketing Officer	Common StockSale2 trades	3,872avg $29.77 / share	$115.29K	Jun 8Filed Jun 10 · 2d later	2 filings 60 @ $29.77 · $1.79KSEC filing 3,812 @ $29.78 · $113.5KSEC filing

Congress transactions 3

All Congress filings

Sale disclosed

Columbia Banking System, Inc. - Common Stock (COLB) · Stock

The filing reports a sale for a joint account.

Josh GottheimerReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: March 5, 2026

Sale disclosed

Columbia Banking System, Inc. - Common Stock (COLB) · Stock

The filing reports a sale for the member.

Gilbert CisnerosReporting House member

Reported amount: $15,001 – $50,000Reported range; exact amount not disclosed.
Trade date: January 15, 2026

Purchase disclosed

Columbia Banking System, Inc. - Common Stock (COLB) · Stock

The filing reports a purchase for the member.

Gilbert CisnerosReporting House member

Reported amount: $1,001 – $15,000Reported range; exact amount not disclosed.
Trade date: October 3, 2025

Why this buying score?

Qualifying common-equity purchase value

$5,619 of common-equity purchase value after transaction-age decay across 180 days.

+2 pts

Distinct buying groups

1 distinct reporting-owner group(s). Joint rows count once; identity is not proof of discretion.

+2 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0000887343
Latest public acceptance: Sep 15, 2026, 08:55 PM UTC
Score calculated: Oct 8, 2026, 12:04 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.

Reporting insider

Security / transaction

Amount / price

Value

Traded / disclosed

Source

EVP Chief Marketing Officer

Common StockSale2 trades

3,872avg $29.77 / share

$115.29K

Jun 8Filed Jun 10 · 2d later

2 filings

60 @ $29.77 · $1.79KSEC filing
3,812 @ $29.78 · $113.5KSEC filing

Why this buying score?

Qualifying common-equity purchase value

$5,619 of common-equity purchase value after transaction-age decay across 180 days.

+2 pts

Distinct buying groups

1 distinct reporting-owner group(s). Joint rows count once; identity is not proof of discretion.

+2 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage

Source: SEC EDGAR · Form 4
Issuer CIK: 0000887343
Latest public acceptance: Sep 15, 2026, 08:55 PM UTC
Score calculated: Oct 8, 2026, 12:04 AM UTC
Parser: form4-parser-1.5
Classifier: form4-classifier-1.1
Scoring methodology: insider-experimental-1.1
Availability: Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.