Ouster (OUST) CEO reports 24,610-share tax sale at $24.9772

Rhea-AI Filing Summary

Ouster, Inc. President and CEO Angus Pacala reported a sale of 24,610 shares of Ouster common stock on 12/12/2025, coded as a sale transaction. The weighted average sale price was $24.9772.

According to the footnotes, the shares were sold to cover withholding taxes upon the vesting and settlement of restricted stock units, pursuant to a Rule 10b5-1 sale to cover instruction letter dated June 9, 2025. After this transaction, Pacala beneficially owns 985,317 Ouster shares. The shares were sold in multiple trades at prices ranging from $24.7601 to $24.98663.

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^*

Pacala Charles Angus

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

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	12/12/2025		S		24,610(1)	D	$24.9772(2)	985,317	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 shares sold to cover withholding taxes incurred upon the vesting and settlement of restricted stock units pursuant to a Rule 10b5-1 sale to cover instruction letter dated June 9, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.7601 to $24.98663. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Megan Chung, as Attorney-in-Fact for Angus Pacala	12/16/2025
	** 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.

FAQ

What insider transaction did Ouster (OUST) disclose in this Form 4?

The filing shows that Angus Pacala, President and CEO of Ouster, Inc., sold 24,610 shares of Ouster common stock on 12/12/2025, reported as a sale transaction.

How many Ouster (OUST) shares did CEO Angus Pacala sell and at what price?

Angus Pacala sold 24,610 shares of Ouster common stock at a weighted average price of $24.9772 per share, with individual trades ranging from $24.7601 to $24.98663.

Why were the Ouster (OUST) shares sold in this Form 4 transaction?

The footnote states the shares were sold to cover withholding taxes incurred upon the vesting and settlement of restricted stock units, pursuant to a Rule 10b5-1 sale to cover instruction letter dated June 9, 2025.

How many Ouster (OUST) shares does Angus Pacala own after the transaction?

Following the reported sale, Angus Pacala beneficially owns 985,317 shares of Ouster common stock, held with direct ownership status.

Was the Ouster (OUST) CEO sale made under a Rule 10b5-1 plan?

Yes. The explanatory footnote indicates the sale was executed pursuant to a Rule 10b5-1 sale to cover instruction letter dated June 9, 2025, in connection with RSU vesting.

What price range did the Ouster (OUST) CEO’s share sales cover?

The filing notes that the 24,610 shares were sold in multiple transactions at prices ranging from $24.7601 to $24.98663, with a weighted average price of $24.9772.