COLUMBIA BANKING SYSTEM, INC. (COLB) - Dilution Analysis

Visualizing historical and potential share dilution over time

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Dilution Analysis

Medium Risk

Moderate dilution risk

Last updated: May 05, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares

Recent Dilution: 39.06% (2 years)

Historical Dilution Factor: significant recent dilution

Outstanding Shares

290M

Potential Supply

Additional shares possible

Splits

None

Past 2 years

Summary

COLB currently has 291M outstanding shares. with minimal authorized share overhang for future dilution. The company has significantly diluted shareholders by 39.06% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares

Total Supply

Historical Data Points

Date	Event	Outstanding
May 05, 2026	10-Q filing \| 290.9M shares outstanding	290M
May 06, 2025	10-Q filing \| 210.0M shares outstanding	210M
Feb 25, 2025	10-K filing \| 209.3M shares outstanding	210M
Nov 05, 2024	10-Q filing \| 209.5M shares outstanding	210M
Aug 06, 2024	10-Q filing \| 209.0M shares outstanding	210M
May 07, 2024	10-Q filing \| 209.0M shares outstanding	210M
Feb 27, 2024	10-K filing \| 195.9M shares outstanding	200M
Nov 03, 2023	10-Q filing \| 208.6M shares outstanding	210M
Aug 03, 2023	10-Q filing \| 208.5M shares outstanding	210M
May 09, 2023	10-Q filing \| 208.5M shares outstanding	210M
Feb 24, 2023	10-K filing \| 78.2M shares outstanding	78M
Oct 28, 2022	10-Q filing \| 78.2M shares outstanding	78M
Aug 04, 2022	10-Q filing \| 78.1M shares outstanding	78M
May 05, 2022	10-Q filing \| 78.1M shares outstanding	78M
Feb 25, 2022	10-K filing \| 72.9M shares outstanding	73M
Nov 05, 2021	10-Q filing \| 71.2M shares outstanding	71M
Aug 06, 2021	10-Q filing \| 71.2M shares outstanding	71M
May 06, 2021	10-Q filing \| 71.1M shares outstanding	71M
Feb 26, 2021	10-K filing \| 70.9M shares outstanding	71M
Nov 05, 2020	10-Q filing \| 70.8M shares outstanding	71M
Jul 31, 2020	10-Q filing \| 70.7M shares outstanding	71M
May 08, 2020	10-Q filing \| 71.3M shares outstanding	71M
Feb 27, 2020	10-K filing \| 72.0M shares outstanding	72M

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