Ouster (NASDAQ: OUST) insider plans 5,837-share sale after prior trades

Rhea-AI Filing Summary

Ouster insider sale filing: A holder of Ouster (symbol OUST) common stock filed a notice to sell 5,837 shares through Morgan Stanley Smith Barney on or around 01/16/2026 on the NASDAQ market. The filing lists an aggregate market value of $158,999.88 for this planned sale, with 60,005,219 Ouster common shares shown as outstanding. The shares to be sold were acquired as restricted stock from the issuer on 03/28/2024 and 12/11/2023.

The same seller reported prior sales during the past three months, including 10,696 common shares sold on 12/12/2025 for gross proceeds of $267,165.05 and 5,838 common shares sold on 10/17/2025 for gross proceeds of $181,094.18.

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	5837	158999.88	60005219	01/16/2026	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	03/28/2024	Restricted Stock	ISSUER			5576	03/28/2024	Not Applicable
Common	12/11/2023	Restricted Stock	ISSUER			261	12/11/2023	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MEGAN CHUNG 350 Treat Avenue San Francisco CA 94110	COMMON	12/12/2025	10696	267165.05
MEGAN CHUNG 350 Treat Avenue San Francisco CA 94110	Common	10/17/2025	5838	181094.18

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

How many OUST shares are planned to be sold under this Form 144?

The notice covers a proposed sale of 5,837 shares of Ouster common stock, to be sold through Morgan Stanley Smith Barney on or about 01/16/2026.

What is the aggregate market value of the OUST shares in this planned sale?

The filing reports an aggregate market value of $158,999.88 for the 5,837 Ouster common shares to be sold.

How many Ouster shares are outstanding according to this Form 144?

The document shows that Ouster has 60,005,219 common shares outstanding as referenced in the securities information table.

What OUST share sales has the filer made in the last three months?

Over the past three months, the seller reported two sales: 10,696 common shares on 12/12/2025 for $267,165.05 and 5,838 common shares on 10/17/2025 for $181,094.18.

How and when were the OUST shares in this Form 144 acquired?

The shares were acquired as restricted stock from the issuer on two dates: 5,576 shares on 03/28/2024 and 261 shares on 12/11/2023, with payment described as not applicable.

On which exchange will the OUST shares be sold and through which broker?

The filing indicates that the Ouster common shares are to be sold on NASDAQ through Morgan Stanley Smith Barney LLC Executive Financial Services.