BlackRock, Inc. - 31 Dec 2025 SCHEDULE 13G/A Report for FIRST INTERSTATE BANCSYSTEM INC Class A Stock (FIBK)

Filing Manager: BlackRock, Inc.
Reporting Manager: BlackRock, Inc.
Security: FIRST INTERSTATE BANCSYSTEM INC Class A Stock
Symbol: FIBK
Shares outstanding: 103,023,287 shares
Disclosed Ownership: 13,290,004 shares
Ownership: 13%
Form type: SCHEDULE 13G/A
Filing time: 08 Jan 2026, 13:28:03 UTC
Date of event: 31 Dec 2025
Previous filing: 17 Apr 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock, Inc.	13%	13,290,004	13,073,231	0	Spencer Fleming	Managing Director