First Interstate grants 3,843 RSUs to risk chief

Jones Nathan R reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Jones Nathan R reported acquisition or exercise transactions in this Form 4 filing.

FIRST INTERSTATE BANCSYSTEM INC disclosed that Chief Risk Officer Nathan R. Jones received a grant of 3,843 shares of Common Stock, effectively tied to restricted stock units valued at $33.13 per share. This is a compensation-related award, not an open-market purchase.

According to the footnote, these restricted stock units were granted under the company’s 2023 Equity and Incentive Plan and will vest in three equal annual installments beginning on March 15, 2027, subject to Jones’s continued employment through each vesting date. Following this award, he holds 3,843 shares directly.

Insider Trade Summary

Grant/Award: 3,843 shares

Grant/Award 1 txn

Insider Jones Nathan R

Role Chief Risk Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,843	$33.13	$127K

Holdings After Transaction: Common Stock — 3,843 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

What did FIRST INTERSTATE BANCSYSTEM (FIBK) disclose in this Form 4?

FIRST INTERSTATE BANCSYSTEM reported a compensation-related equity grant to Chief Risk Officer Nathan R. Jones. He received 3,843 restricted stock units linked to Common Stock at $33.13 per share under the 2023 Equity and Incentive Plan.

How many FIBK shares were granted to Chief Risk Officer Nathan R. Jones?

Nathan R. Jones was granted 3,843 restricted stock units tied to FIRST INTERSTATE BANCSYSTEM Common Stock. These units represent a new equity award and are his entire reported direct holding after the transaction.

Is the FIBK insider transaction a market purchase or a compensation grant?

The transaction is a compensation grant, not a market purchase. The Form 4 classifies it as a grant or award acquisition of 3,843 restricted stock units under the company’s 2023 Equity and Incentive Plan.

When do Nathan R. Jones’s FIBK restricted stock units vest?

The 3,843 restricted stock units vest in three equal annual installments. Vesting begins on March 15, 2027, and each installment requires Nathan R. Jones to remain employed through the applicable vesting date.

What equity plan governs the FIBK grant to the Chief Risk Officer?

The grant to Chief Risk Officer Nathan R. Jones was made under FIRST INTERSTATE BANCSYSTEM’s 2023 Equity and Incentive Plan. The award consists of restricted stock units that convert into shares as they vest over three years.

How many FIBK shares does Nathan R. Jones hold after this Form 4 transaction?

After this transaction, Nathan R. Jones is reported as directly holding 3,843 shares of FIRST INTERSTATE BANCSYSTEM Common Stock. That figure reflects the shares associated with this newly granted restricted stock unit award.

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Accepted by SEC EDGAR 03/17/2026 - 06:08 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^*

Jones Nathan R

(Last) (First) (Middle)

P.O. BOX 30918

(Street)

BILLINGS MT 59116-0918

(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 Risk 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		3,843(1)	A	$33.13	3,843	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, 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.