First Interstate BancSystem (FIBK) awards 1,806 RSUs to director Ritter

Rhea-AI Filing Summary

Ritter Matthew John reported acquisition or exercise transactions in this Form 4 filing.

First Interstate BancSystem Inc. reported that director Matthew John Ritter received an equity award covering 1,806 shares of common stock in the form of restricted stock units under its 2023 Equity and Incentive Plan. These units vest on June 1, 2027, contingent on his continuous service, and represent his directly reported holding after the award.

Insider Trade Summary

Net Buyer: 1,806 shares

Net Buy 1 txn

Insider Ritter Matthew John

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	1,806	$38.97	$70K

Holdings After Transaction: Common Stock — 1,806 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 on June 1, 2027, subject to the reporting person's provision of continuous service to the Registrant through the vesting date.

Key Figures

Restricted stock units granted: 1,806 shares Reported value per share: $38.97 Total shares following transaction: 1,806 shares +1 more

4 metrics

Restricted stock units granted 1,806 shares Grant of restricted stock units to director Matthew John Ritter

Reported value per share $38.97 Per-share value used for the July 22, 2026 restricted stock unit grant

Total shares following transaction 1,806 shares Directly reported common-share-equivalent holdings after the award

Vesting date June 1, 2027 Restricted stock units vest if continuous service is maintained through this date

Key Terms

restricted stock units, 2023 Equity and Incentive Plan, vesting date

3 terms

restricted stock units financial

"Shares issuable upon vesting of restricted stock units granted"

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 date financial

"subject to the reporting person's provision of continuous service to the Registrant through the vesting date"

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

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Available on EDGAR 07/24/2026 - 06:31 PM Accepted by SEC EDGAR 07/24/2026 - 06:31 PM Learn about SEC filing dates

FAQ

What insider equity award did First Interstate BancSystem (FIBK) report for Matthew John Ritter?

Matthew John Ritter received an equity award covering 1,806 shares of First Interstate BancSystem common stock as restricted stock units at a reported value of $38.97 per share, increasing his directly reported holding to 1,806 share-equivalents.

When do Matthew John Ritter’s restricted stock units in First Interstate BancSystem (FIBK) vest?

The restricted stock units granted to Matthew John Ritter vest on June 1, 2027. Vesting is conditioned on his provision of continuous service to First Interstate BancSystem through this vesting date, according to the grant terms.

What price per share was reported for Matthew John Ritter’s equity grant in FIBK?

The equity award to Matthew John Ritter was reported at $38.97 per share for the 1,806 restricted stock units. This figure reflects the per-share value used to record the July 22, 2026 grant of common-stock-based units.

How does this equity award affect Matthew John Ritter’s reported holdings in First Interstate BancSystem (FIBK)?

Following the grant, Matthew John Ritter is reported as directly holding rights to 1,806 common shares through restricted stock units. These shares are issuable only upon vesting, which requires continuous service through June 1, 2027.

Was Matthew John Ritter’s FIBK equity award made under a Rule 10b5-1 trading plan?

The transaction-level information indicates the Rule 10b5-1 plan checkbox was not marked for this award. This suggests the grant was a standard equity compensation award, not executed under a pre-arranged trading plan.

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^*

Ritter Matthew John

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/22/2026

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	07/22/2026		A		1,806(1)	A	$38.97	1,806	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 on June 1, 2027, subject to the reporting person's provision of continuous service to the Registrant through the vesting date.

Remarks:

	/s/ Brian M. Murphy, Attorney-in-fact for Reporting Person	07/24/2026
	** 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)