[Form 4] Ouster, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Director Ernest E Maddock of Ouster (OUST) reported the acquisition of restricted stock units (RSUs) on June 18, 2025. The transaction details include:

• 13,558 RSUs that vest quarterly through June 18, 2026 or the next annual stockholder meeting, contingent on continued service
• 1,500 RSUs that vested immediately on grant date
• Following these transactions, Maddock directly owns 84,177 shares of common stock

Both RSU grants were awarded at $0.00 exercise price. The filing was submitted by Megan Chung as attorney-in-fact on June 20, 2025. This equity compensation grant appears to be part of the company's director compensation program, with a mix of time-based vesting and immediate vesting components.

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
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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).

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^*

MADDOCK ERNEST E

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2025

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	06/18/2025		A		13,558(1)	A	$0.00	82,677	D
Common Stock	06/18/2025		A		1,500(2)	A	$0.00	84,177	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. Represents Ouster, Inc. (the "Company") restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Company's common stock. The RSUs vest in quarterly installments through the earlier of June 18, 2026 or the Company's next annual meeting of stockholders, subject to the Reporting Person's continued service through the applicable vesting date.

2. Represents Company RSUs which immediately vested in full on June 18, 2025.

	/s/ Megan Chung, as Attorney-in-Fact for Ernest E Maddock	06/20/2025
	** 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

How many Ouster (OUST) shares did Director Ernest Maddock acquire on June 18, 2025?

Director Ernest Maddock acquired a total of 15,058 shares on June 18, 2025, consisting of 13,558 restricted stock units (RSUs) that vest quarterly through June 18, 2026, and 1,500 RSUs that vested immediately.

What is the vesting schedule for OUST Director Maddock's 13,558 RSU grant?

The 13,558 RSUs vest in quarterly installments through the earlier of June 18, 2026 or Ouster's next annual meeting of stockholders, subject to Maddock's continued service through the applicable vesting dates.

How many OUST shares does Director Maddock own after the June 18, 2025 grants?

Following the RSU grants on June 18, 2025, Director Ernest Maddock beneficially owns 84,177 shares of Ouster (OUST) common stock directly.

What was the purchase price of OUST RSUs granted to Director Maddock?

The RSUs were granted to Director Maddock at $0.00 per share, as they represent equity compensation for his service as a board member rather than an open market purchase.