First Interstate BancSystem (FIBK) CFO has 1,307 shares withheld for taxes

Rhea-AI Filing Summary

FIRST INTERSTATE BANCSYSTEM INC Chief Financial Officer David Della Camera reported a routine tax-related share disposition. On the vesting of a previously reported restricted stock unit award, 1,307 shares of common stock were withheld at $33.22 per share to cover his tax obligations. After this withholding, he owns 26,678 shares of common stock directly, and the filing does not reflect any open-market buying or selling.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Della Camera David

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	1,307	$33.22	$43K

Holdings After Transaction: Common Stock — 26,678 shares (Direct)

Footnotes (1)

1. [object Object]

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^*

Della Camera David

(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)
	Chief Financial 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		1,307(1)	D	$33.22	26,678	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)

FAQ

What insider transaction did FIBK’s CFO report in this Form 4?

FIRST INTERSTATE BANCSYSTEM INC’s CFO, David Della Camera, reported a tax-related share disposition. On restricted stock unit vesting, 1,307 common shares were withheld at $33.22 each to satisfy his tax withholding obligations, rather than being sold on the open market.

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

The filing shows 1,307 shares of FIRST INTERSTATE BANCSYSTEM INC common stock were withheld. These shares covered David Della Camera’s tax obligations arising from the vesting of a previously reported restricted stock unit award, according to the Form 4 footnote disclosure.

Does the FIBK Form 4 indicate an open-market sale by the CFO?

No, the Form 4 describes a tax-withholding disposition, not an open-market sale. Shares were withheld by the company to pay taxes when a restricted stock unit award vested, consistent with transaction code F and the accompanying footnote explanation.

How many FIBK shares does the CFO hold after the tax withholding?

After the tax-withholding transaction, David Della Camera directly owns 26,678 shares of FIRST INTERSTATE BANCSYSTEM INC common stock. This post-transaction balance is reported in the Form 4 as the total shares following the disposition of 1,307 shares for tax purposes.

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

Transaction code F indicates a payment of exercise price or tax liability by delivering securities. In this case, 1,307 FIRST INTERSTATE BANCSYSTEM INC shares were withheld to satisfy the CFO’s tax withholding obligations upon vesting of a restricted stock unit award.