Rivian officer plans sale of 15,000 shares

An executive of Rivian Automotive filed a Rule 144 notice to sell up to 15,000 shares of common stock.

Rhea-AI Filing Summary

Rivian Automotive, Inc. (RIVN) received a Rule 144 notice that officer Michael J. Callahan intends to sell up to 15,000 shares of Rivian common stock. The shares are to be sold through Morgan Stanley Smith Barney LLC on NASDAQ, with an approximate aggregate market value of $244,390.50.

Key Figures

Shares proposed for sale: 15,000 shares Approximate aggregate market value: $244,390.50 Planned sale date: September 11, 2026 +1 more

4 metrics

Shares proposed for sale 15,000 shares Common stock covered by the Rule 144 notice

Approximate aggregate market value $244,390.50 Value of 15,000 shares listed in the Rule 144 filing

Planned sale date September 11, 2026 Date associated with the proposed NASDAQ sale of the shares

Acquisition date of restricted stock August 15, 2023 Date the common stock, described as restricted, was acquired from the issuer

Key Terms

Rule 144, restricted stock, aggregate market value

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock financial

"Common | 08/15/2023 | Restricted Stock | ISSUER"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"15000 | 244390.50 | 1443948130 | 09/11/2026 | NASDAQ"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

What does the Form 144 filing related to RIVN disclose?

It discloses that officer Michael J. Callahan has filed notice under Rule 144 of a proposed sale of up to 15,000 shares of Rivian Automotive, Inc. common stock through a broker on NASDAQ.

How many Rivian (RIVN) shares are covered by Michael J. Callahan’s Rule 144 notice?

The notice covers a proposed sale of up to 15,000 shares of Rivian Automotive, Inc. common stock, as reported under Rule 144.

What is the approximate market value of the RIVN shares in this Form 144?

The filing reports an approximate aggregate market value of $244,390.50 for the 15,000 Rivian Automotive, Inc. common shares covered by the proposed sale.

Who is the person planning to sell Rivian (RIVN) shares under this Form 144?

The Form 144 names Michael J. Callahan, an officer of Rivian Automotive, Inc., as the person for whose account the 15,000 common shares are proposed to be sold.

Which broker is listed for the proposed Rivian (RIVN) share sale in the Form 144?

The Form 144 lists Morgan Stanley Smith Barney LLC Executive Financial Services as the broker handling the proposed sale of Rivian Automotive, Inc. common stock on NASDAQ.

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

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Available on EDGAR 09/11/2026 - 04:36 PM Accepted by SEC EDGAR 09/11/2026 - 04:35 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	0001262742
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	RIVIAN AUTOMOTIVE, INC.
SEC File Number	001-41042
Address of Issuer	14600 MYFORD ROAD IRVINE CALIFORNIA 92606
Phone	(888) 748-4261
Name of Person for Whose Account the Securities are To Be Sold	MICHAEL J CALLAHAN
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	Officer

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	244390.50	1443948130	09/11/2026	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	08/15/2023	Restricted Stock	ISSUER			15000	08/15/2023	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	09/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/12/2026
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/ Michael Callahan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)