Broker to sell 30,000 OUST shares after option exercise

Morgan Stanley Smith Barney LLC reported a sale of 30,000 shares of common stock of OUST on 04/17/2026 following an exercise of stock options for cash.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC reported a sale of 30,000 shares of common stock of OUST on 04/17/2026 following an exercise of stock options for cash. The filing also lists recent 10b5-1 sales by Mark Frichtl: 20,000 on 04/15/2026 for $480,000, 40,000 on 04/14/2026 for $910,248, 40,000 on 03/25/2026 for $837,576, and 15,689 on 03/12/2026 for $367,637.20.

Key Figures

Shares to be sold: 30,000 shares 10b5-1 sale on 04/15/2026: 20,000 shares 10b5-1 sale on 04/14/2026: 40,000 shares +2 more

5 metrics

Shares to be sold 30,000 shares Sale on 04/17/2026 after exercise of stock options

10b5-1 sale on 04/15/2026 20,000 shares Proceeds $480,000

10b5-1 sale on 04/14/2026 40,000 shares Proceeds $910,248

10b5-1 sale on 03/25/2026 40,000 shares Proceeds $837,576

10b5-1 sale on 03/12/2026 15,689 shares Proceeds $367,637.20

Key Terms

10b5-1, Exercise of Stock Options, Form 144

3 terms

10b5-1 regulatory

"10b5-1 Sales for MARK FRICHTL 350 Treat Avenue San Francisco"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Exercise of Stock Options financial

"04/17/2026 | Exercise of Stock Options | Issuer"

Form 144 regulatory

"144: Securities To Be Sold"

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.

FAQ

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

What does the Form 144 for OUST disclose?

The Form 144 shows a sale of 30,000 common shares of OUST on 04/17/2026 tied to an exercise of stock options for cash. It also lists multiple recent 10b5-1 sales by Mark Frichtl in March–April 2026.

Who is selling the OUST shares listed in the filing?

The filing identifies Morgan Stanley Smith Barney LLC as the filer for the 30,000-share sale on 04/17/2026 following an option exercise. Separate entries list prior 10b5-1 sales by Mark Frichtl.

How many shares and proceeds are shown for recent Mark Frichtl sales?

The filing lists four recent sales by Mark Frichtl: 20,000 on 04/15/2026 for $480,000; 40,000 on 04/14/2026 for $910,248; 40,000 on 03/25/2026 for $837,576; and 15,689 on 03/12/2026 for $367,637.20.

Was the 30,000-share sale an open-market trade or option exercise?

The filing specifies the 30,000 shares result from an exercise of stock options and were sold for cash on 04/17/2026, per the securities-to-be-sold line in the filing.

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

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Accepted by SEC EDGAR 04/17/2026 - 04:38 PM EDT 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	0001847596
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	MARK FRICHTL
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	30000	725100.00	62803991	04/17/2026	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	04/17/2026	Exercise of Stock Options	Issuer			30000	04/17/2026	Cash

* 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
10b5-1 Sales for MARK FRICHTL 350 Treat Avenue San Francisco CA 94110	Common	04/15/2026	20000	480000.00
10b5-1 Sales for MARK FRICHTL 350 Treat Avenue San Francisco CA 94110	Common	04/14/2026	40000	910248.00
10b5-1 Sales for MARK FRICHTL 350 Treat Avenue San Francisco CA 94110	Common	03/25/2026	40000	837576.00
MARK FRICHTL 350 Treat Avenue San Francisco CA 94110	Common	03/12/2026	15689	367637.20

144: Remarks and Signature

Remarks
Date of Notice	04/17/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/15/2025
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/ Mark Frichtl
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)