[Form 4] Ouster, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Susan Heystee, a director of Ouster, Inc. (OUST), reported the sale of common stock on 08/13/2025. The Form 4 shows 40,389.6 shares were sold in multiple transactions at a weighted average price of $30.00 (individual trade prices ranged from $30.00 to $30.10). After these dispositions the filing reports 52,264.7 shares beneficially owned by the reporting person. The Form 4 was executed on behalf of Ms. Heystee by an attorney-in-fact and dated 08/15/2025. The filing includes a footnote stating the seller will provide breakdowns of shares sold at each price upon request.

Insights

Corporate Governance Expert

TL;DR: A company director executed a sizeable share sale; disclosure is factual but raises typical governance questions about insider selling.

The filing documents a direct disposition of 40,389.6 common shares by a director, with clear pricing information and a post-sale beneficial ownership figure of 52,264.7 shares. From a governance perspective, the Form 4 provides the required transparency about insider trading activity but does not include context such as whether the sale was pursuant to a trading plan. Investors and board committees commonly review such sales to ensure they align with company policies and do not reflect undisclosed material information.

Securities Analyst

TL;DR: Director sale disclosed: 40,389.6 shares sold at ~ $30.00; disclosure gives concrete volume and price but no transaction rationale.

For market analysis, the filing supplies precise numbers: number of shares sold, weighted average price, and remaining beneficial ownership. This allows calculation of proceeds (approximate gross proceeds near $1.21 million using the weighted average) and assessment of insider liquidity events. The Form 4 lacks any statement that the sale was under a trading plan or was non-discretionary, so analysts must treat it as an ordinary insider disposition without further context.

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 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)
08/13/2025

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	08/13/2025		S		40,389.6	D	$30(1)	52,264.7	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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.00 to $30.10. The Reporting Person undertakes to provide Ouster, Inc. (the "Company"), any security holder of the Company, 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 Susan Heystee	08/15/2025
	** 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 did OUST director Susan Heystee sell and when?

Susan Heystee sold 40,389.6 shares of Ouster common stock on 08/13/2025, as reported on the Form 4.

At what price were the OUST shares sold?

The weighted average price reported was $30.00, with individual trade prices ranging from $30.00 to $30.10.

How many OUST shares does the director own after the sale?

The Form 4 reports 52,264.7 shares beneficially owned by the reporting person following the reported transactions.

Was the Form 4 signed and who signed it?

The Form 4 was signed by Megan Chung as Attorney-in-Fact for Susan Heystee and dated 08/15/2025.

Does the filing state the sale was part of a Rule 10b5-1 trading plan?

No. The filing does not state that the transactions were made pursuant to a Rule 10b5-1 plan or similar arrangement.