Director sells 10,938 shares for $256K

DARIEN R SPENCER reported the sale of 10,938 shares of Common Stock on 03/12/2026, generating proceeds of $256,307.68.

Rhea-AI Filing Summary

DARIEN R SPENCER reported the sale of 10,938 shares of Common Stock on 03/12/2026, generating proceeds of $256,307.68. The filing lists Restricted Stock with an original date of 03/15/2022 and identifies Morgan Stanley Smith Barney LLC as the broker.

Insights

Corporate Governance Analyst

Minor insider disposition recorded; routine disclosure under Form 144.

The filing shows a sale of 10,938 shares on 03/12/2026

The transaction size and single sale date suggest a routine executed sale; cash‑flow recipient and any trading plan references are not shown in the excerpt.

Key Figures

Shares sold: 10,938 shares Proceeds: $256,307.68 Securities listed: 30,001 shares

3 metrics

Shares sold 10,938 shares Sale date 03/12/2026

Proceeds $256,307.68 Proceeds from 10,938-share sale on 03/12/2026

Securities listed 30,001 shares Securities To Be Sold line shows 30001 (03/15/2022) under Restricted Stock

Key Terms

Restricted Stock, Form 144, Securities To Be Sold

3 terms

Restricted Stock financial

"Restricted Stock | ISSUER | 30001 | 03/15/2022"

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.

Form 144 regulatory

"CONTENT METADATA: "form_type": "144""

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.

Securities To Be Sold regulatory

"144: Securities To Be Sold | Common | 03/15/2022 | Restricted Stock"

FAQ

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

What did the Form 144 for OUST disclose about the insider sale?

It discloses that Darien R Spencer sold 10,938 shares on 03/12/2026, producing $256,307.68 in proceeds. The filing lists the shares as Common Stock and shows Morgan Stanley Smith Barney LLC as the broker.

Does the filing state the type or grant date of the securities sold for OUST?

Yes. The filing lists the securities as Restricted Stock with an original date of 03/15/2022. No further vesting or exercise details are provided in the excerpt.

Who acted as broker in the reported Form 144 for OUST?

The broker named in the excerpt is Morgan Stanley Smith Barney LLC, with an address at 1 New York Plaza. The filing does not state additional execution or clearing details.

How much cash did the insider receive from the OUST sale?

The disclosed proceeds from the sale are $256,307.68 for the 10,938 shares sold on 03/12/2026. The filing does not allocate proceeds to any use or recipient beyond the sale.

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

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Accepted by SEC EDGAR 05/26/2026 - 04:08 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	0001226378
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	OUSTER, INC.
SEC File Number	001-39463
Address of Issuer	350 Treat Avenue San Francisco CALIFORNIA 94110
Phone	(415) 949-0108
Name of Person for Whose Account the Securities are To Be Sold	DARIEN R SPENCER
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	30001	1350045.00	63672949	05/26/2026	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	03/15/2022	Restricted Stock	ISSUER			30001	03/15/2022	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
DARIEN R SPENCER 350 Treat Avenue San Francisco CA 94110	Common	03/12/2026	10938	256307.68

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock during the period of 03/15/2022 through 12/11/2023.
Date of Notice	05/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/18/2025
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	/s/ Darien Raymond Spencer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)