FIBK executive reports tax-withheld 1,550 shares

FIRST INTERSTATE BANCSYSTEM INC executive Lori Meyer, EVP and Chief Information Officer, reported a routine tax-related share disposition.

Rhea-AI Filing Summary

FIRST INTERSTATE BANCSYSTEM INC executive Lori Meyer, EVP and Chief Information Officer, reported a routine tax-related share disposition. On the vesting of a previously reported restricted stock unit award, 1,550 shares of common stock were withheld on March 16, 2026 to satisfy tax withholding obligations at $33.22 per share. After this withholding, Meyer directly holds 14,270 shares of common stock. This was not an open-market purchase or sale, but a non-discretionary tax-withholding event.

Insider Trade Summary

Exercise Price or Tax Liability: 1,550 shares

Exercise Price or Tax Liability 1 txn

Insider Meyer Lori

Role EVP, Chief Information Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	1,550	$33.22	$51K

Holdings After Transaction: Common Stock — 14,270 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 insider transaction did FIBK executive Lori Meyer report?

Lori Meyer reported a tax-related disposition of shares, not an open-market trade. On March 16, 2026, 1,550 shares of First Interstate BancSystem common stock were withheld to cover tax obligations tied to a previously reported restricted stock unit vesting.

Was the FIBK insider transaction by Lori Meyer a stock sale?

The transaction was not an open-market stock sale. It was a Form 4 code F event, where 1,550 shares were withheld by the company at $33.22 per share to satisfy Lori Meyer’s tax withholding obligations upon RSU vesting.

How many FIBK shares were involved in Lori Meyer’s Form 4 filing?

The filing shows 1,550 shares of First Interstate BancSystem common stock were withheld. These shares were used to satisfy Lori Meyer’s tax obligations on a previously reported restricted stock unit award vesting, rather than being sold on the open market.

How many FIBK shares does Lori Meyer hold after this transaction?

Following the tax-withholding disposition, Lori Meyer directly holds 14,270 shares of First Interstate BancSystem common stock. This remaining position reflects her direct ownership after 1,550 shares were withheld to cover tax obligations related to restricted stock unit vesting.

What does transaction code F mean in the FIBK Form 4 for Lori Meyer?

Transaction code F indicates payment of an exercise price or tax liability using company shares. In Lori Meyer’s case, 1,550 First Interstate BancSystem shares were withheld to meet tax withholding obligations when a restricted stock unit award vested.

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Accepted by SEC EDGAR 03/18/2026 - 06:04 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
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^*

Meyer Lori

(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)
	EVP, Chief Information Officer

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		1,550(1)	D	$33.22	14,270	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/ Kirk D. Jensen, as 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)