Ouster GC Megan Chung sells 5,837 shares

Ouster, Inc. officer Megan Chung, who serves as General Counsel and Secretary, reported selling 5,837 shares of Ouster common stock on January 16, 2026 at a price of $27.24 per share.

Rhea-AI Filing Summary

Ouster, Inc. officer Megan Chung, who serves as General Counsel and Secretary, reported selling 5,837 shares of Ouster common stock on January 16, 2026 at a price of $27.24 per share. After this transaction, she beneficially owned 183,141 shares of Ouster common stock in direct form. The filing notes that the sale transactions were made primarily for tax planning purposes and that all sales were executed under a pre-arranged Rule 10b5-1 trading plan dated June 4, 2025.

Insider Trade Summary

Net Seller: 5,837 shares

Net Sell 1 txn

Insider Chung Megan

Role General Counsel and Secretary

Sold 5,837 shs ($159K)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,837	$27.24	$159K

Holdings After Transaction: Common Stock — 183,141 shares (Direct)

Footnotes (1)

1. F1. Reflects sale transactions made primarily for tax planning purposes.

FAQ

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

What insider transaction did Ouster (OUST) report for Megan Chung?

Ouster reported that officer Megan Chung, the company’s General Counsel and Secretary, sold 5,837 shares of Ouster common stock in a Form 4 filing.

At what price did Megan Chung sell Ouster (OUST) shares?

The reported sale of Ouster common stock by Megan Chung was executed at a price of $27.24 per share.

How many Ouster (OUST) shares does Megan Chung hold after the reported sale?

Following the reported transaction, Megan Chung beneficially owned 183,141 shares of Ouster common stock in direct ownership.

When did the reported Ouster (OUST) insider sale by Megan Chung occur?

The insider sale by Megan Chung was dated January 16, 2026 in the Form 4 filing.

Was the Ouster (OUST) insider sale by Megan Chung under a Rule 10b5-1 plan?

Yes. The filing states that all sale transactions reported were made pursuant to a Rule 10b5-1 trading plan dated June 4, 2025.

Why were the Ouster (OUST) shares sold by Megan Chung, according to the filing?

The footnote explains that the sale transactions were made primarily for tax planning purposes.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 01/21/2026 - 07:11 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chung Megan

(Last) (First) (Middle)

350 TREAT AVENUE

(Street)

SAN FRANCISCO CA 94110

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Ouster, Inc. [ OUST ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel and Secretary

3. Date of Earliest Transaction (Month/Day/Year)
01/16/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/16/2026		S		5,837(1)	D	$27.24	183,141	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reflects sale transactions made primarily for tax planning purposes.

Remarks:

All sale transactions reported herein were made pursuant to a Rule 10b5-1 trading plan dated June 4, 2025.

	/s/ Megan Chung	01/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.