First Interstate BancSystem (FIBK) CFO receives 3,370-share RSU grant

Rhea-AI Filing Summary

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

FIRST INTERSTATE BANCSYSTEM INC Chief Financial Officer David Della Camera reported an equity award of 3,370 shares of common stock in the form of restricted stock units granted at no cash cost. These units are scheduled to vest on June 1, 2029, subject to his continued employment through that date. Following this award, he holds a reported total of 30,048 shares of common stock directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Della Camera David

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,370	$0.00	--

Holdings After Transaction: Common Stock — 30,048 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant size: 3,370 shares Grant price per share: $0.00 per share Shares after transaction: 30,048 shares +1 more

4 metrics

RSU grant size 3,370 shares Restricted stock units awarded on June 1, 2026

Grant price per share $0.00 per share Equity award, not open-market purchase

Shares after transaction 30,048 shares Direct common stock holdings following award

RSU vesting date June 1, 2029 Vesting conditioned on continued employment

Key Terms

restricted stock units, 2023 Equity and Incentive Plan, vesting, Grant, award, or other acquisition

4 terms

restricted stock units financial

"Shares issuable upon vesting of restricted stock units granted to the reporting person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2023 Equity and Incentive Plan financial

"granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan"

vesting financial

"The restricted stock units vests on June 1, 2029, subject to the reporting person's continued employment"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

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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)
06/01/2026

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	06/01/2026		A		3,370(1)	A	$0	30,048	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 vests on June 1, 2029, subject to the reporting person's continued employment through the vesting date.

Remarks:

	/s/ Kirk D. Jensen, as attorney in fact for reporting person	06/03/2026
	** 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 on this Form 4?

FIRST INTERSTATE BANCSYSTEM INC CFO David Della Camera reported receiving 3,370 restricted stock units of common stock. The award was recorded at a price of $0.00 per share, reflecting a compensation grant rather than an open-market purchase.

When do David Della Camera's new FIBK restricted stock units vest?

The 3,370 restricted stock units granted to David Della Camera vest on June 1, 2029. Vesting is conditioned on his continued employment with FIRST INTERSTATE BANCSYSTEM INC through that vesting date, as described in the award footnote.

How many FIBK shares does the CFO hold after this grant?

After the reported grant, David Della Camera holds 30,048 shares of FIRST INTERSTATE BANCSYSTEM INC common stock directly. This total reflects his position following the 3,370-share restricted stock unit award disclosed in the Form 4 filing.

Is the FIBK CFO’s transaction an open-market buy or a compensation grant?

The transaction is a compensation-related grant, not an open-market buy. The Form 4 uses transaction code "A" for a grant or award acquisition at $0.00 per share, consistent with equity compensation rather than cash-funded share purchases.

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. The footnote explains that the 3,370 units are issuable upon vesting, linking the award to this company equity compensation program.