Ouster (OUST) director Virginia Boulet adds 6,500 shares in open‑market buy

Rhea-AI Filing Summary

Ouster, Inc. director Virginia Boulet bought 6,500 shares of common stock in an open‑market transaction on March 6, 2026. The weighted average purchase price was 20.95 per share, with trades ranging from 20.92 to 20.95. Following this purchase, she directly owns 228,342 shares.

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

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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^*

Boulet Virginia

(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)
03/06/2026

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	03/06/2026		P		6,500	A	$20.95(1)	228,342	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 purchased in multiple transactions at prices ranging from $20.92 to $20.95, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

	/s/ Megan Chung, as Attorney-in-Fact for Virginia Boulet	03/09/2026
	** 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.

FAQ

What insider transaction did OUST director Virginia Boulet report?

Virginia Boulet reported buying 6,500 Ouster (OUST) common shares in an open‑market transaction. The trade occurred on March 6, 2026, and was reported as a direct ownership purchase, increasing her total directly held stake in the company’s stock.

At what price did Virginia Boulet buy Ouster (OUST) shares?

She bought the Ouster shares at a weighted average price of 20.95 per share. According to the disclosure, individual trades were executed in a price range from 20.92 to 20.95, with the insider offering to provide detailed breakdowns upon request.

How many Ouster (OUST) shares does Virginia Boulet own after this trade?

After this open‑market purchase, Virginia Boulet directly owns 228,342 shares of Ouster common stock. This figure includes the newly acquired 6,500 shares reported in the transaction, reflecting her updated direct beneficial ownership position in the company.

Was the OUST insider trade by Virginia Boulet a buy or a sell?

The reported Ouster transaction was a buy. The Form 4 classifies it as an open‑market purchase of 6,500 common shares, with no shares reported as sold in this filing and the net activity reflecting a net acquisition of stock.

What does the price range in Virginia Boulet’s OUST trade footnote mean?

The footnote states the reported price is a weighted average, with purchases between 20.92 and 20.95 per share. This indicates multiple small trades within that range, and the insider has undertaken to provide exact trade‑by‑trade details upon request.