FIBK CFO receives 6,279-share equity grant

Della Camera David reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Della Camera David reported acquisition or exercise transactions in this Form 4 filing.

FIRST INTERSTATE BANCSYSTEM INC reported that Chief Financial Officer David Della Camera received a grant of 6,279 shares of common stock valued at $33.13 per share. Following this equity award, he holds 27,985 shares directly.

The shares are issuable upon vesting of restricted stock units granted under the company’s 2023 Equity and Incentive Plan. These units vest in three equal annual installments beginning on March 15, 2027, and each vesting date requires his continued employment with the company.

Insider Trade Summary

Grant/Award: 6,279 shares

Grant/Award 1 txn

Insider Della Camera David

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6,279	$33.13	$208K

Holdings After Transaction: Common Stock — 27,985 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 CFO David Della Camera report in this Form 4 filing?

He reported receiving an equity grant of 6,279 shares of common stock at $33.13 per share. These shares are tied to restricted stock units and represent compensation rather than an open-market purchase of FIRST INTERSTATE BANCSYSTEM INC stock.

How many FIRST INTERSTATE BANCSYSTEM INC (FIBK) shares does the CFO hold after this grant?

After the reported grant, CFO David Della Camera directly holds 27,985 shares of FIRST INTERSTATE BANCSYSTEM INC common stock. This figure reflects his position following the award of 6,279 shares related to restricted stock units granted as part of his compensation package.

What is the vesting schedule for the FIBK restricted stock units granted to the CFO?

The restricted stock units vest in three equal annual installments starting March 15, 2027. Each installment requires the CFO to remain employed through the applicable vesting date, aligning his long-term incentives with the company’s performance and shareholder interests over multiple years.

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

The restricted stock units were granted under FIRST INTERSTATE BANCSYSTEM INC’s 2023 Equity and Incentive Plan. This plan provides stock-based compensation to key employees, linking their rewards to company performance and helping retain leadership through multi-year vesting requirements.

Was the FIBK CFO’s transaction an open-market buy or a compensation award?

The transaction is classified as a grant or award acquisition, not an open-market purchase. It reflects restricted stock units granted as part of the CFO’s compensation, with shares issuable upon future vesting rather than immediate market buying activity.

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

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

Della Camera David

(Last) (First) (Middle)

PO BOX 30918

(Street)

BILLINGS MT 59116

(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 Financial 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		6,279(1)	A	$33.13	27,985	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, as 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.
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.