FIBK director granted 2,247 restricted stock units

Cho Alice S reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Cho Alice S reported acquisition or exercise transactions in this Form 4 filing.

FIRST INTERSTATE BANCSYSTEM INC director Alice S. Cho received an equity award of 2,247 shares of Common Stock in the form of restricted stock units. These units were granted at no cash cost to her as part of compensation.

The restricted stock units are issued under the company’s 2023 Equity and Incentive Plan and are scheduled to vest on June 1, 2027, if she continues serving the company through that date or until the next annual shareholder meeting, whichever comes first. Following this grant, she holds 15,792 shares of Common Stock directly.

Insider Trade Summary

Grant/Award: 2,247 shares

Grant/Award 1 txn

Insider Cho Alice S

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,247	$0.00	$0.00

Holdings After Transaction: Common Stock — 15,792 shares (Direct)

Footnotes (1)

1. 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 on June 1, 2027, subject to the reporting person's provision of continuous service to the Registrant through the earlier of the applicable vesting date or the date of the Registrant's next annual shareholder meeting.

Key Figures

RSU grant size: 2,247 shares Vesting date: June 1, 2027 Shares held after grant: 15,792 shares +1 more

4 metrics

RSU grant size 2,247 shares Restricted stock units granted as of June 1, 2026

Vesting date June 1, 2027 Scheduled vesting for restricted stock units

Shares held after grant 15,792 shares Total Common Stock directly owned after transaction

Grant price per share $0.00 per share Compensation grant with no cash paid by director

Key Terms

restricted stock units, 2023 Equity and Incentive Plan, continuous service

3 terms

restricted stock units financial

"Shares issuable upon vesting of restricted stock units granted to the reporting person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2023 Equity and Incentive Plan financial

"granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan"

continuous service financial

"subject to the reporting person's provision of continuous service to the Registrant"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Alice S. Cho report in this Form 4 for FIBK?

Alice S. Cho reported receiving an award of 2,247 restricted stock units of FIRST INTERSTATE BANCSYSTEM INC Common Stock. The units were granted as compensation and increase her direct holdings to 15,792 shares after the transaction.

Is the Alice S. Cho Form 4 transaction for FIBK a market buy or sell?

The Form 4 does not show a market buy or sell. It reports an acquisition coded as a grant or award, meaning Cho received 2,247 restricted stock units as compensation rather than purchasing or selling shares in the open market.

When do Alice S. Cho’s 2,247 restricted stock units in FIBK vest?

The 2,247 restricted stock units are scheduled to vest on June 1, 2027. Vesting depends on her providing continuous service to FIRST INTERSTATE BANCSYSTEM INC through that date or until the company’s next annual shareholder meeting, whichever occurs earlier.

How many FIRST INTERSTATE BANCSYSTEM INC shares does Alice S. Cho hold after this grant?

After the reported grant, Alice S. Cho holds 15,792 shares of FIRST INTERSTATE BANCSYSTEM INC Common Stock directly. This total includes the impact of the 2,247-share restricted stock unit award disclosed in the Form 4 filing.

Under what plan were the FIBK restricted stock units granted to Alice S. Cho?

The restricted stock units were granted under FIRST INTERSTATE BANCSYSTEM INC’s 2023 Equity and Incentive Plan. This plan provides equity-based compensation, such as restricted stock units, to eligible participants including directors like Alice S. Cho.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/03/2026 - 01:49 PM EDT Learn about SEC filing dates

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^*

Cho Alice S

(Last) (First) (Middle)

P.O. BOX 30918

(Street)

BILLINGS MONTANA 59116-0918

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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

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

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

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	06/01/2026		A		2,247(1)	A	$0	15,792	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 on June 1, 2027, subject to the reporting person's provision of continuous service to the Registrant through the earlier of the applicable vesting date or the date of the Registrant's next annual shareholder meeting.

Remarks:

	/s/ Kirk D. Jensen, Attorney-in-Fact for Reporting Person	06/03/2026
	** 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.
* Form 4: SEC 1474 (03-26)