FIRST INTERSTATE BANCSYSTEM INC (FIBK) - Dilution Analysis

Visualizing historical and potential share dilution over time

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Dilution Analysis

Low Risk

Limited dilution potential

Last updated: May 07, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares

Recent Dilution: 0.35% (2 years)

Historical Dilution Factor: minimal recent dilution

Outstanding Shares

99M

Potential Supply

Additional shares possible

Splits

None

Past 2 years

Summary

FIBK currently has 98.9M outstanding shares. with minimal authorized share overhang for future dilution. The company has minimally diluted shareholders by 0.35% over the past 2 years.

Share Structure Timeline

Outstanding Shares

Total Supply

Historical Data Points

Date	Event	Outstanding
May 07, 2026	10-Q filing \| 98.9M shares outstanding	99M
Nov 06, 2025	10-Q filing \| 103.2M shares outstanding	100M
Aug 06, 2025	10-Q filing \| 103.4M shares outstanding	100M
May 07, 2025	10-Q filing \| 103.4M shares outstanding	100M
Feb 28, 2025	10-K filing \| 103.2M shares outstanding	100M
Nov 04, 2024	10-Q filing \| 103.2M shares outstanding	100M
Aug 02, 2024	10-Q filing \| 103.1M shares outstanding	100M
May 03, 2024	10-Q filing \| 103.0M shares outstanding	100M
Feb 29, 2024	10-K filing \| 103.8M shares outstanding	100M
Nov 03, 2023	10-Q filing \| 103.8M shares outstanding	100M
Aug 04, 2023	10-Q filing \| 103.8M shares outstanding	100M
May 05, 2023	10-Q filing \| 103.8M shares outstanding	100M
Feb 24, 2023	10-K filing \| 103.3M shares outstanding	100M
Nov 07, 2022	10-Q filing \| 106.5M shares outstanding	110M
Aug 05, 2022	10-Q filing \| 109.1M shares outstanding	110M
May 09, 2022	10-Q filing \| 109.5M shares outstanding	110M
Feb 25, 2022	10-K filing \| 41.7M shares outstanding	42M
Nov 04, 2021	10-Q filing \| 41.7M shares outstanding	42M
Aug 06, 2021	10-Q filing \| 41.7M shares outstanding	42M
May 07, 2021	10-Q filing \| 41.6M shares outstanding	42M
Mar 01, 2021	10-K filing \| 40.9M shares outstanding	41M
Nov 04, 2020	10-Q filing \| 41.1M shares outstanding	41M
Aug 07, 2020	10-Q filing \| 42.6M shares outstanding	43M
May 11, 2020	10-Q filing \| 42.5M shares outstanding	42M
Mar 18, 2020	POS AM filing: This is a post-effective amendment to deregister unsold securities from a previous Form S-3 registration statement.	43M
Feb 27, 2020	10-K filing \| 43.2M shares outstanding	43M

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