FIRST INTERSTATE BANCSYSTEM INC

For the period ended Sep 30, 2025. Filed Nov 6, 2025.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 6, 2025

FIBK$38.00-1.1%Stored close · as of Nov 10, 2026

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Contents

Consolidated Statements of Changes in Stockholders’ Equity

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (In millions, except share and per share data)(Unaudited)
	Three Months Ended September 30,
	Commonstock	Retainedearnings	Accumulatedothercomprehensiveloss	Totalstockholders’equity
Balance at June 30, 2025	$2,463.5	$1,191.2	$(232.9)	$3,421.8
Net income	—	71.4	—	71.4
Other comprehensive income, net of tax expense	—	—	28.8	28.8
Common stock transactions:
844,426 common shares purchased and retired	(27.5)	—	—	(27.5)
3,706 common shares issued	—	—	—	—
2,308 non-vested common shares issued	—	—	—	—
68,508 non-vested common shares forfeited or canceled	—	—	—	—
Stock-based compensation expense	3.3	—	—	3.3
Common stock cash dividends declared ($0.47 per share)	—	(49.1)	—	(49.1)
Balance at September 30, 2025	$2,439.3	$1,213.5	$(204.1)	$3,448.7
	Commonstock	Retainedearnings	Accumulatedothercomprehensiveloss	Totalstockholders’equity
Balance at June 30, 2024	$2,453.9	$1,156.9	$(385.5)	$3,225.3
Net income	—	55.5	—	55.5
Other comprehensive income, net of tax expense	—	—	130.6	130.6
Common stock transactions:
3,972 common shares purchased and retired	(0.1)	—	—	(0.1)
4,881 non-vested common shares issued	—	—	—	—
31,664 non-vested common shares forfeited or canceled	—	—	—	—
Stock-based compensation expense	3.6	—	—	3.6
Common stock cash dividends declared ($0.47 per share)	—	(49.1)	—	(49.1)
Balance at September 30, 2024	$2,457.4	$1,163.3	$(254.9)	$3,365.8
See accompanying notes to unaudited consolidated financial statements.

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIESCONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (In millions, except share and per share data)(Unaudited)
	Nine Months Ended September 30,
	Commonstock	Retainedearnings	Accumulated othercomprehensive loss	Totalstockholders’equity
Balance at December 31, 2024	$2,459.5	$1,166.4	$(321.9)	$3,304.0
Net income	—	193.3	—	193.3
Other comprehensive income, net of tax expense	—	—	117.8	117.8
Common stock transactions:
952,074 common shares purchased and retired	(30.7)	—	—	(30.7)
39,058 common shares issued	—	—	—	—
482,597 non-vested common shares issued	—	—	—	—
188,288 non-vested common shares forfeited or canceled	—	—	—	—
Stock-based compensation expense	10.5	—	—	10.5
Common stock cash dividends declared ($1.41 per share)	—	(146.2)	—	(146.2)
Balance at September 30, 2025	$2,439.3	$1,213.5	$(204.1)	$3,448.7
	Commonstock	Retainedearnings	Accumulatedothercomprehensiveloss	Totalstockholders’equity
Balance at December 31, 2023	$2,448.9	$1,135.1	$(356.5)	$3,227.5
Cumulative change related to the adoption of ASU 2023-02	—	1.2	—	1.2
Adjusted balance at January 1, 2024	2,448.9	1,136.3	(356.5)	3,228.7
Net income	—	173.9	—	173.9
Other comprehensive income, net of tax expense	—	—	101.6	101.6
Common stock transactions:
49,420 common shares purchased and retired	(1.2)	—	—	(1.2)
742,979 non-vested common shares issued	—	—	—	—
105,322 non-vested common shares forfeited or canceled	—	—	—	—
Stock-based compensation expense	9.7	—	—	9.7
Common stock cash dividends declared ($1.41 per share)	—	(146.9)	—	(146.9)
Balance at September 30, 2024	$2,457.4	$1,163.3	$(254.9)	$3,365.8
See accompanying notes to unaudited consolidated financial statements.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.