FIBK executive granted 5,971 restricted shares

Shepler Christopher L. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Shepler Christopher L. reported acquisition or exercise transactions in this Form 4 filing.

FIRST INTERSTATE BANCSYSTEM INC Chief Banking Officer Christopher L. Shepler received a grant of 5,971 shares of common stock at $33.13 per share as an equity award. These shares are issuable upon vesting of restricted stock units under the company’s 2023 Equity and Incentive Plan.

The restricted stock units vest in three equal annual installments beginning on March 15, 2027, subject to Shepler’s continued employment through each vesting date. Following this award, his directly owned common stock holdings reported in this filing total 9,870 shares, indicating a routine compensation-related equity grant rather than an open-market purchase.

Insider Trade Summary

Grant/Award: 5,971 shares

Grant/Award 1 txn

Insider Shepler Christopher L.

Role Chief Banking Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	5,971	$33.13	$198K

Holdings After Transaction: Common Stock — 9,870 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 in three equal annual installments beginning on March 15, 2027, subject to the reporting person's continued employment through each applicable vesting date.

FAQ

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

What did FIBK executive Christopher L. Shepler report in this Form 4 filing?

Christopher L. Shepler reported receiving 5,971 shares of FIRST INTERSTATE BANCSYSTEM INC common stock as a grant. The award is in the form of restricted stock units under the 2023 Equity and Incentive Plan, not an open-market stock purchase.

Is the FIBK Form 4 transaction a stock purchase or an equity grant?

The Form 4 for FIBK shows an equity grant, not a market purchase. Shepler received 5,971 restricted stock units coded as an “A” transaction, described as a grant, award, or other acquisition of common stock at a reference price of $33.13 per share.

What is the vesting schedule for Christopher Shepler’s FIBK restricted stock units?

The 5,971 restricted stock units vest in three equal annual installments beginning on March 15, 2027. Each installment requires Shepler’s continued employment through the applicable vesting date before the underlying common shares become issuable to him.

How many FIBK shares does Christopher Shepler hold after this Form 4 transaction?

After this grant, Shepler’s directly owned common stock holdings reported total 9,870 shares. This reflects the addition of 5,971 shares from the restricted stock unit award, increasing his position from the prior level indicated by the filing data.

Under which plan were the FIBK restricted stock units granted to Christopher Shepler?

The restricted stock units were granted under FIRST INTERSTATE BANCSYSTEM INC’s 2023 Equity and Incentive Plan. This plan provides equity-based compensation, and the RSUs will convert into common shares upon vesting, subject to Shepler’s continued employment requirements.

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

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Accepted by SEC EDGAR 03/17/2026 - 06:11 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^*

Shepler Christopher L.

(Last) (First) (Middle)

401 N. 31ST ST.

(Street)

BILLINGS MT 59101

(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)
	Chief Banking 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		5,971(1)	A	$33.13	9,870	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, 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.
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