First Interstate (NASDAQ: FIBK) COO awarded 4,044-share restricted stock unit grant

Rhea-AI Filing Summary

Robbins Kristina reported acquisition or exercise transactions in this Form 4 filing.

FIRST INTERSTATE BANCSYSTEM INC EVP and Chief Operations Officer Kristina Robbins received an equity award representing 4,044 shares of Common Stock as compensation. The award consists of restricted stock units granted under the company’s 2023 Equity and Incentive Plan at a reference price of $33.13 per share.

The restricted stock units vest in three equal annual installments beginning on March 15, 2027, conditioned on her continued employment through each vesting date. Following this grant, Robbins is reported as beneficially owning 20,128 shares of Common Stock directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Robbins Kristina

Role EVP, Chief Operations Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	4,044	$33.13	$134K

Holdings After Transaction: Common Stock — 20,128 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Robbins Kristina

(Last) (First) (Middle)

PO BOX 30918

(Street)

BILLINGS MT 59116

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FIRST INTERSTATE BANCSYSTEM INC [ FIBK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Operations Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/15/2026		A		4,044(1)	A	$33.13	20,128	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

Remarks:

	/s/ Kirk D. Jensen, as attorney in fact for reporting person	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did FIBK EVP Kristina Robbins report in this Form 4 filing?

Kristina Robbins reported receiving an equity award representing 4,044 shares of Common Stock. The award is in the form of restricted stock units granted under First Interstate BancSystem’s 2023 Equity and Incentive Plan at a reference price of $33.13 per share.

Is the FIBK Form 4 transaction a purchase or a compensation grant?

The transaction is a compensation-related grant, not an open-market purchase. Robbins received restricted stock units as a grant or award under the company’s 2023 Equity and Incentive Plan, classified as an acquisition with transaction code A in the Form 4.

How many shares are involved in Kristina Robbins’ latest FIBK equity grant?

The award covers restricted stock units representing 4,044 shares of First Interstate BancSystem Common Stock. These units are tied to a reference price of $33.13 per share and will convert into shares only as they vest over time.

When do Kristina Robbins’ FIBK restricted stock units vest?

The restricted stock units vest in three equal annual installments beginning on March 15, 2027. Each installment is subject to Robbins’ continued employment with First Interstate BancSystem through the applicable vesting date, as disclosed in the Form 4 footnote.

What are Kristina Robbins’ total FIBK share holdings after this Form 4 transaction?

After this equity grant, Robbins is reported as beneficially owning 20,128 shares of First Interstate BancSystem Common Stock directly. This total reflects the holdings reported in the Form 4 after including the newly granted restricted stock unit award.

Under which plan were the FIBK restricted stock units granted to Kristina Robbins?

The restricted stock units were granted under First Interstate BancSystem’s 2023 Equity and Incentive Plan. This plan provides equity-based compensation, and the units granted to Robbins will vest in three equal annual installments starting March 15, 2027, subject to continued employment.