OUST Ouster Inc

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES                                                                                   
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940                       

1. Name and Address of Reporting Person * Heystee Susan	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) Interim Chief Revenue Officer
(Last)          (First)          (Middle) 350 TREAT AVENUE	3. Date of Earliest Transaction (MM/DD/YYYY) 6/11/2021
(Street) SAN FRANCISCO, CA 94110 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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	6/11/2021		M		1891	A	(1)	105589	D
Common Stock	6/11/2021		M		3861	A	(1)	109450	D
Common Stock	7/13/2021		A		302717 (2)	A	(1)	412167	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 of Derivative Security: 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
Restricted Stock Units	(1)	6/11/2021		M			1891	(3)	(3)	Common Stock	1891	$0.00	20805	D
Restricted Stock Units	(1)	6/11/2021		M			3861	(4)	(4)	Common Stock	3861	$0.00	11585	D

Explanation of Responses:
(1)	Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.
(2)	Reflects an award of 302,717 RSUs, 252,264 of which vested upon the filing of the Company's Registration Statement on Form S-8 on July 13, 2021 and 50,453 of which will vest on July 25, 2021. The RSUs have no expiration date.
(3)	The original grant of 22,696 RSUs granted on March 11, 2021 vested or will vest as to 1/12 of the total number of RSUs each quarter thereafter, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.
(4)	The original grant of 15,446 RSUs granted on March 11, 2021 vested or will vest as to 25% of the total number of RSUs each quarter thereafter, subject to the reporting person's continued service through the applicable vesting date. The RSUs have no expiration date.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Heystee Susan 350 TREAT AVENUE SAN FRANCISCO, CA 94110	X		Interim Chief Revenue Officer

Signatures
/s/ Myra Pasek, Attorney-in-Fact		7/22/2021
**Signature of Reporting Person		Date