# EDGAR Filing Document

**Accession Number:** 0001408733
**File Stem:** 0000860413-23-000066
**Filing Date:** 2023-3
**Character Count:** 7262
**Document Hash:** f38a143ada802fa477739c042ffd47cd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000860413-23-000066.hdr.sgml**: 20230317

**ACCESSION NUMBER**: 0000860413-23-000066

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230315

**FILED AS OF DATE**: 20230317

**DATE AS OF CHANGE**: 20230317

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** RILEY KEVIN P
- **CENTRAL INDEX KEY:** 0001408733

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34653
- **FILM NUMBER:** 23744387

**MAIL ADDRESS:**
- **STREET 1:** BERKSHIRE HILLS BANCORP INC
- **STREET 2:** 24 NORTH STREET
- **CITY:** PITTSFIELD
- **STATE:** MA
- **ZIP:** 01201
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIRST INTERSTATE BANCSYSTEM INC
- **CENTRAL INDEX KEY:** 0000860413
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **IRS NUMBER:** 810331430
- **STATE OF INCORPORATION:** MT
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** P O BOX 30918
- **STREET 2:** 401 NO 31ST STREET
- **CITY:** BILLINGS
- **STATE:** MT
- **ZIP:** 59116-0918
- **BUSINESS PHONE:** 4062555300

**MAIL ADDRESS:**
- **STREET 1:** P O BOX 30918
- **STREET 2:** 401 NO 31ST STREET
- **CITY:** BILLINGS
- **STATE:** MT
- **ZIP:** 59116-0918

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIRST INTERSTATE BANCSYSTEM OF MONTANA INC
- **DATE OF NAME CHANGE:** 19930615

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>RILEY KEVIN P<br><sub>(Last) (First) (Middle)</sub><br>PO BOX 30918<br><sub>(Street)</sub><br>BILLINGS, MT 59116-0918<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-03-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_President & CEO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>FIRST INTERSTATE BANCSYSTEM INC [ FIBK ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 2023-03-15 |  | F |  | 354<sup>(1)</sup> | D | $31.39 | 43876 | D |  |
| Class A Common Stock | 2023-03-15 |  | F |  | 1400<sup>(1)</sup> | D | $31.39 | 42476 | D |  |
| Class A Common Stock | 2023-03-15 |  | F |  | 2890<sup>(1)</sup> | D | $31.39 | 39586 | D |  |
| Class A Common Stock | 2023-03-15 |  | A |  | 6553<sup>(2)</sup> | A | $0 | 46139 | D |  |
| Class A Common Stock | 2023-03-15 |  | F |  | 2972<sup>(1)</sup> | D | $31.39 | 43167 | D |  |
| Class A Common Stock | 2023-03-15 |  | A |  | 9652<sup>(3)</sup> | A | $0 | 52819 | D |  |
| Class A Common Stock |  |  |  |  |  |  |  | 92555 | I | By IRA |
| Class A Common Stock |  |  |  |  |  |  |  | 1040 | I | As Custodian under UTMA -1 |
| Class A Common Stock |  |  |  |  |  |  |  | 1040 | I | As Custodian under UTMA -2 |
| Class A Common Stock |  |  |  |  |  |  |  | 1040 | I | As Custodian under UTMA -3 |
| Class A Common Stock |  |  |  |  |  |  |  | 760 | I | As Custodian under UTMA - 4 |
| Class A Common Stock |  |  |  |  |  |  |  | 500 | I | As Custodian under UTMA - 5 |
| Class A Common Stock |  |  |  |  |  |  |  | 250 | I | As Custodian under UTMA - 6 |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

(2) Shares awarded in conjunction with a Performance Share Agreement in connection to  Restricted Stock Award Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

(3) Shares issued for no consideration pursuant to the Registrant's Equity Incentive Plan vesting in two years following the year in which the grant is made.

**Signature:** /s/ Kirk D. Jensen, Attorney-in-Fact for Reporting Person  
**Date:** 2023-03-17

### Remarks:

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.**