GM insider filing shows $8.19M proposed stock sale on NYSE

Rhea-AI Filing Summary

Form 144 filed for General Motors Co (GM) reporting proposed sale of 136,161 common shares with an aggregate market value of $8,185,175.76, to be sold through Morgan Stanley Smith Barney LLC on the NYSE approximately on 09/25/2025. The filing lists acquisition details: 50,000 performance shares acquired 02/12/2023, 66,285 shares from a stock option exercise on 09/25/2025 (paid in cash), and 19,876 performance shares acquired 02/08/2025. The notice also discloses a prior sale by Mark Reuss of 26,869 shares on 09/24/2025 for $1,612,871.65. The filer attests no undisclosed material adverse information.

Positive

• Detailed acquisition history provided with dates and transaction types (performance shares, option exercise)
• Filing uses a major broker (Morgan Stanley Smith Barney LLC) and lists the NYSE as the exchange, indicating standard execution channels
• Filer attests to absence of undisclosed material adverse information in the signature/remarks section

Negative

• Significant proposed sale of 136,161 shares ($8,185,175.76) could increase available supply and be viewed negatively by some investors
• Recent insider sale by Mark Reuss of 26,869 shares on 09/24/2025 for $1,612,871.65 indicates near-term insider liquidity activity

Insights

Securities Analyst

TL;DR: Insider sale of 136,161 shares valued at $8.19M is material and merits attention for potential shareholder supply impact.

The filing shows a sizeable proposed disposition executed via a major broker on the NYSE, with mixed acquisition types including performance shares and a cash-paid option exercise on the same date as the proposed sale. The aggregated market value of $8.19 million is large enough to be noticed by investors and could increase share supply in the short term. The prior sale by Mark Reuss of 26,869 shares for $1.61 million one day earlier is disclosed, indicating recent insider liquidity activity.

Corporate Governance Expert

TL;DR: The disclosure follows Rule 144 format, providing acquisition provenance and a representation about material nonpublic information.

The form provides acquisition dates and transaction types, which supports transparency around insider holdings and sale timing. The filer affirms they are not aware of undisclosed material adverse information, and the filing references Rule 144 procedures. No 10b5-1 plan date is provided on the form, so it is unclear whether the sales are planned under an affirmative trading plan.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	136161	8185175.76	952077801	09/25/2025	NYSE

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	02/12/2023	Performance Shares	Issuer			50000	02/12/2023	Not Applicable
Common	09/25/2025	Stock Option Exercise	Issuer			66285	09/25/2025	Cash
Common	02/08/2025	Performance Shares	Issuer			19876	02/08/2025	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MARK REUSS 300 Renaissance Center Detroit MI 48265-3000	Common	09/24/2025	26869	1612871.65

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does General Motors' (GM) Form 144 disclose?

The form discloses a proposed sale of 136,161 common shares valued at $8,185,175.76, to be sold via Morgan Stanley Smith Barney LLC on the NYSE around 09/25/2025.

Who acquired the shares being sold and when were they acquired?

The filing lists acquisitions: 50,000 performance shares on 02/12/2023, 66,285 shares via stock option exercise on 09/25/2025 (paid in cash), and 19,876 performance shares on 02/08/2025.

Has any insider recently sold GM stock before this filing?

Yes. The filing reports that Mark Reuss sold 26,869 common shares on 09/24/2025 for gross proceeds of $1,612,871.65.

Through which broker and exchange will the proposed sale occur?

The sale is listed to occur through Morgan Stanley Smith Barney LLC and on the NYSE.

Does the filing state whether the sale is part of a Rule 10b5-1 plan?

No specific date of plan adoption or instruction under Rule 10b5-1 is provided in the filing; that field is not populated.