First Interstate GC tax-share withholding reported

FIRST INTERSTATE BANCSYSTEM INC General Counsel Kirk D. Jensen reported a tax-related share disposition.

Rhea-AI Filing Summary

FIRST INTERSTATE BANCSYSTEM INC General Counsel Kirk D. Jensen reported a tax-related share disposition. On the vesting of a previously reported restricted stock unit award, 1,375 shares of common stock were withheld at $33.22 per share to cover his tax obligations. After this withholding, he directly holds 32,731 shares of common stock. This was not an open-market sale but a routine tax-withholding event linked to equity compensation.

Insider Trade Summary

Exercise Price or Tax Liability: 1,375 shares

Exercise Price or Tax Liability 1 txn

Insider Jensen Kirk D

Role General Counsel

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	1,375	$33.22	$46K

Holdings After Transaction: Common Stock — 32,731 shares (Direct)

Footnotes (1)

1. F1. Number of shares of common stock withheld to satisfy the reporting person's tax withholding obligations upon vesting of a previously reported restricted stock unit award.

FAQ

What did FIBK General Counsel Kirk D. Jensen report in this Form 4?

He reported a tax-related share withholding tied to equity compensation. Specifically, 1,375 common shares were withheld upon vesting of a restricted stock unit award to satisfy tax obligations, not sold on the open market.

How many FIRST INTERSTATE BANCSYSTEM (FIBK) shares were withheld for taxes?

A total of 1,375 common shares were withheld to cover tax obligations. The withholding price was $33.22 per share and came from a previously reported restricted stock unit award that vested.

Is the FIBK insider transaction by Kirk D. Jensen an open-market sale?

No, it is not an open-market sale. The 1,375 shares reported were withheld by the company to satisfy tax liability on a vested restricted stock unit award, a routine administrative step in equity compensation.

How many FIBK shares does Kirk D. Jensen hold after this tax withholding?

Following the transaction, he directly holds 32,731 shares of FIRST INTERSTATE BANCSYSTEM common stock. This figure reflects his position after the 1,375 shares were withheld to meet tax obligations on the vested award.

What does transaction code "F" mean in the FIBK Form 4 filing?

Code “F” denotes payment of an exercise price or tax liability by delivering securities. In this case, 1,375 FIBK shares were withheld to satisfy the reporting person’s tax withholding obligations when a restricted stock unit award vested.

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Accepted by SEC EDGAR 03/18/2026 - 06:07 PM 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
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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^*

Jensen Kirk D

(Last) (First) (Middle)

PO BOX 30918

(Street)

BILLINGS MONTANA 59116

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		F		1,375(1)	D	$33.22	32,731	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. Number of shares of common stock withheld to satisfy the reporting person's tax withholding obligations upon vesting of a previously reported restricted stock unit award.

Remarks:

	/s/ Brian M. Murphy, Attorney-in-fact for Reporting Person	03/18/2026
	** 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)