Kristina Robbins - 15 Mar 2026 Form 4 Insider Report for FIRST INTERSTATE BANCSYSTEM INC (FIBK)

Signature
/s/ Kirk D. Jensen, as attorney in fact for reporting person
Issuer symbol
FIBK
Transactions as of
15 Mar 2026
Net transactions value
$0
Form type
4
Filing time
17 Mar 2026, 18:11:06 UTC
Previous filing
29 May 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Robbins Kristina EVP, Chief Operations Officer PO BOX 30918, BILLINGS /s/ Kirk D. Jensen, as attorney in fact for reporting person 17 Mar 2026 0001930719

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction FIBK Common Stock Award +4,044 +25% $33.13* 20,128 15 Mar 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest in three equal annual installments beginning on March 15, 2027, subject to the reporting person's continued employment through each applicable vesting date.