Form 144: 15,000 Shares Reported for Sale

Filer filed a Form 144 reporting a proposed sale of 15,000 shares of Common Stock.

Rhea-AI Filing Summary

Filer filed a Form 144 reporting a proposed sale of 15,000 shares of Common Stock. The filing lists an aggregate amount of $539,533.00 and states the shares are part of a distribution from a trust or an estate attributed to Thomas Scott. The filing references 06/20/2020 as the sale date and shows an outstanding share figure of 97,142,879 (listed with 06/18/2026). The notice is a dealer filing to report an intended sale under resale restrictions.

Insights

Securities Compliance Analyst

Forms 144 report intended resale of restricted or control stock under resale rules.

The filing lists 15,000 shares being offered in a distribution from a trust or an estate, with an aggregate dollar amount of $539,533.00. It records a reported sale date of 06/20/2020 and an outstanding share figure of 97,142,879 as of 06/18/2026.

Because this is a dealer notice under resale rules, the action is procedural; eventual sale execution, timing, and market impact depend on market placement and compliance with Rule 144 conditions.

Key Figures

Shares to be sold: 15,000 shares Aggregate amount: $539,533.00 Dealer: Morgan Stanley Smith Barney LLC +3 more

6 metrics

Shares to be sold 15,000 shares listed as securities to be sold

Aggregate amount $539,533.00 dollar amount shown in the filing

Dealer Morgan Stanley Smith Barney LLC dealer listed on the Form 144

Sale date listed 06/20/2020 date shown for the proposed distribution

Outstanding shares listed 97,142,879 figure shown alongside <date>06/18/2026</date>

Distribution type Distribution from a trust or an estate reason for sale listed in the filing

Key Terms

Form 144, distribution from a trust or an estate, restricted or control stock resale rules

3 terms

Form 144 regulatory

"Filer filed a Form 144 reporting a proposed sale of 15,000 shares"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

distribution from a trust or an estate legal

"listed as 'Distribution from a Trust or an Estate' for the securities sold"

restricted or control stock resale rules regulatory

"dealer filing to report an intended sale under resale restrictions"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 for FIBK report?

The Form 144 reports an intended sale of 15,000 shares of common stock. It lists an aggregate amount of $539,533.00 and describes the transfer as a distribution from a trust or an estate attributed to Thomas Scott.

When is the sale dated in the filing for FIBK?

The filing lists 06/20/2020 as the sale date for the reported shares. The Form also shows an outstanding share figure of 97,142,879 with an accompanying date of 06/18/2026 in the excerpt.

Who is the selling party named in the Form 144 for FIBK?

The Form identifies Thomas Scott as the source of the shares, describing the transaction as a distribution from a trust or an estate. The dealer listed is Morgan Stanley Smith Barney LLC for handling the resale notice.

What is the role of the dealer in a Form 144 filing?

The dealer (here, Morgan Stanley Smith Barney LLC) files the notice to report an intended resale under resale rules. The filing itself is procedural and does not confirm that an actual sale has occurred or the timing of any execution.

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

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Accepted by SEC EDGAR 06/18/2026 - 04:10 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001908851
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	FIRST INTERSTATE BANCSYSTEM, INC.
SEC File Number	001-34653
Address of Issuer	401 North 31st Street Billings MONTANA 59101
Phone	(406) 255-5311
Name of Person for Whose Account the Securities are To Be Sold	JULIE SCOTT ROSE TRUST
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Family Ownership

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	15000	539533.00	97142879	06/18/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/20/2020	Distribution from a Trust or an Estate	Thomas Scott			15000	06/20/2020	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	06/18/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Julie Scott Rose, Trustee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)