Ouster (OUST) director Susan Heystee granted 4,725 RSUs in equity award

Rhea-AI Filing Summary

Heystee Susan reported acquisition or exercise transactions in this Form 4 filing.

Ouster, Inc. director Susan Heystee reported an equity compensation grant of 4,725 restricted stock units (RSUs) of common stock. Each RSU represents a right to receive one share of Ouster common stock at no purchase price. The RSUs vest in quarterly installments through the earlier of June 17, 2027 or Ouster’s next annual meeting of stockholders, subject to her continued service. Following this grant, Heystee directly holds 39,818.7 shares of common stock, reflecting a routine, compensation-related increase in her equity position rather than an open-market trade.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Heystee Susan

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	4,725	$0.00	--

Holdings After Transaction: Common Stock — 39,818.7 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSUs granted: 4,725 RSUs Price per share: $0.0000 per share Shares held after grant: 39,818.7 shares +1 more

4 metrics

RSUs granted 4,725 RSUs Director equity award on June 17, 2026

Price per share $0.0000 per share RSU grant exercise price

Shares held after grant 39,818.7 shares Direct ownership following transaction

Vesting end reference date June 17, 2027 RSUs vest quarterly through earlier of this date or next annual meeting

Key Terms

restricted stock units ("RSUs"), contingent right, vest in quarterly installments, continued service

4 terms

restricted stock units ("RSUs") financial

"Represents Ouster, Inc. (the "Company") restricted stock units ("RSUs")."

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

contingent right financial

"Each RSU represents a contingent right to receive one share of the Company's common stock."

vest in quarterly installments financial

"The RSUs vest in quarterly installments through the earlier of June 17, 2027 or the Company's next annual meeting of stockholders"

continued service financial

"subject to the Reporting Person's continued service through the applicable vesting date."

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Form 4 Insider Transactions: What Each Field Means →

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).

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^*

Heystee Susan

(Last) (First) (Middle)

350 TREAT AVENUE

(Street)

SAN FRANCISCO CALIFORNIA 94110

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/17/2026

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

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

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

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	06/17/2026		A		4,725(1)	A	$0	39,818.7	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 17, 2027 or the Company's next annual meeting of stockholders, subject to the Reporting Person's continued service through the applicable vesting date.

	/s/ Megan Chung, as Attorney-in-Fact for Susan Heystee	06/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Ouster (OUST) director Susan Heystee report on this Form 4?

She reported receiving 4,725 restricted stock units (RSUs) of Ouster common stock as equity compensation. These RSUs carry no purchase price and increase her direct holdings to 39,818.7 shares after the transaction.

Are Susan Heystee’s Ouster (OUST) RSUs an open-market stock purchase?

No, the filing shows a grant of 4,725 RSUs as compensation, not an open-market purchase. The transaction code “A” indicates a grant or award, with a price per share of $0.0000 in the filing.

How do Susan Heystee’s Ouster (OUST) RSUs vest over time?

The 4,725 RSUs vest in quarterly installments through the earlier of June 17, 2027 or Ouster’s next annual meeting of stockholders. Vesting is conditioned on her continued service through each applicable vesting date.

What does each Ouster (OUST) RSU granted to Susan Heystee represent?

Each RSU represents a contingent right to receive one share of Ouster’s common stock. Shares are delivered as the RSUs vest over time, subject to the continued service requirement described in the Form 4 footnote.

How many Ouster (OUST) shares does Susan Heystee hold after this RSU grant?

After the 4,725 RSU grant, the filing reports that Susan Heystee directly holds 39,818.7 shares of Ouster common stock. This reflects her updated ownership position following the compensation-related award.

What does transaction code “A” mean in Susan Heystee’s Ouster (OUST) Form 4?

Transaction code “A” signifies a grant, award, or other acquisition of securities. In this case, it reflects the award of 4,725 RSUs, which are part of her equity compensation as a director of Ouster.