FIBK Form 144: 20,000 Shares Proposed Sale ($636,800)

The filing is a Form 144 notice for First Interstate BancSystem, Inc. (FIBK) reporting a proposed sale of 20,000 common shares through Goldman Sachs & Co. LLC with an aggregate market value of $636,800.

Rhea-AI Filing Summary

The filing is a Form 144 notice for First Interstate BancSystem, Inc. (FIBK) reporting a proposed sale of 20,000 common shares through Goldman Sachs & Co. LLC with an aggregate market value of $636,800. The shares represent part of an acquisition described as a gift received on 06/20/2020 from a "Scott Family Member," and the donor originally acquired those shares on 11/03/1993. The proposed approximate sale date is 10/07/2025 on the NASDAQ (listed as NASD). The filer reports no securities sold in the past three months and affirms they are not aware of undisclosed material adverse information.

Positive

• Timely disclosure of proposed sale under Rule 144 via a registered broker
• No securities sold in past three months (reduces immediate pattern concerns)

Negative

• None.

Insights

Insider Transactions Analyst

TL;DR: An insider sale of 20,000 shares is planned via Goldman Sachs with no recent prior sales reported.

The notice documents a planned disposition of 20,000 common shares valued at $636,800, to be executed through Goldman Sachs & Co. LLC on or about 10/07/2025. The shares were received as a gift on 06/20/2020 from a named family member, and there were no reported sales in the prior three months.

The primary dependency for market impact is trade execution timing and market liquidity at sale; the filing itself is procedural and serves to satisfy Rule 144 disclosure requirements. Monitor the actual trade date and size relative to daily trading volume for potential short-term price effects in the immediate execution window.

FAQ

What does the FIBK Form 144 report?

It reports a proposed sale of 20,000 common shares of FIBK with an aggregate market value of $636,800 to be executed through Goldman Sachs & Co. LLC.

When is the proposed sale date for the FIBK shares?

The filing lists an approximate sale date of 10/07/2025.

How were the FIBK shares acquired by the seller?

The shares were acquired as a gift on 06/20/2020 from a "Scott Family Member."

Did the filer report any securities sold in the past three months?

No. The filing states "Nothing to Report" for securities sold during the past three months.

Which broker is handling the proposed FIBK sale?

The broker named is Goldman Sachs & Co. LLC located at 200 West Street, New York, NY.

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

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Accepted by SEC EDGAR 10/07/2025 - 04:43 PM 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	0001908962
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	1-406-255-5311
Name of Person for Whose Account the Securities are To Be Sold	Jonathan R. Scott Trust dtd 11/13/2004
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	Director

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	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	20000	636800	104509863	10/07/2025	NASD

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	Gift	Scott Family Member		11/03/1993	20000	06/20/2020	None

* 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	10/07/2025
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	Goldman Sachs & Co. LLC on behalf of Jonathan R. Scott Trust dtd 11/13/2004
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)