Ouster director sells 11,650 company shares in insider transaction

Ouster, Inc. director Susan Heystee reported selling 11,650 shares of Ouster common stock on December 12, 2025.

Accepted by SEC EDGAR 12/16/2025 - 04:08 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Ouster, Inc. director Susan Heystee reported selling 11,650 shares of Ouster common stock on December 12, 2025. The shares were sold at a weighted average price of $25.0292 per share in multiple transactions within a price range of $25.01 to $25.14, described as sales made for tax planning purposes.

Following these transactions, Heystee beneficially owns 41,624.7 shares of Ouster common stock, held directly.

Insider Trade Summary

Net Seller: 11,650 shares

Net Sell 1 txn

Insider Heystee Susan

Role Director

Sold 11,650 shs ($292K)

Share of Position Sold 21.9%

Type	Security	Shares	Price	Value
Sale	Common Stock	11,650	$25.0292	$292K

Holdings After Transaction: Common Stock — 41,624.7 shares (Direct)

Holdings Before and After: Common Stock, 53,274.7 to 41,624.7 shares (Direct)

Other Insiders: 4 other insiders reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (2)

1. F1. Includes sales made for tax planning purposes.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.01 to $25.14. 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Ouster, Inc. (OUST) disclose in this filing?

The filing reports that director Susan Heystee sold 11,650 shares of Ouster, Inc. common stock in an open-market transaction.

How many Ouster (OUST) shares did the director sell and at what price?

Director Susan Heystee sold 11,650 shares at a weighted average price of $25.0292 per share, with individual trades occurring between $25.01 and $25.14.

When did the Ouster (OUST) insider share sale occur?

The reported insider sale by director Susan Heystee took place on December 12, 2025.

How many Ouster (OUST) shares does the director own after the sale?

After the reported transactions, director Susan Heystee beneficially owns 41,624.7 shares of Ouster, Inc. common stock, held directly.

Were the Ouster (OUST) share sales related to tax planning?

Yes. A footnote explains that the reported sales include sales made for tax planning purposes.

How was the sale price of the Ouster (OUST) shares reported?

The filing states that the price is a weighted average of $25.0292 per share, with the shares sold in multiple transactions at prices ranging from $25.01 to $25.14.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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)
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		11,650(1)	D	$25.0292(2)	41,624.7	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. Includes sales made for tax planning purposes.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.01 to $25.14. 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	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.