Ouster (NYSE: OUST) CRO sells 9,433 shares in 10b5-1 trade

Rhea-AI Filing Summary

Ouster, Inc. Chief Revenue Officer Cyrille Jacquemet reported an open-market sale of 9,433 shares of Common Stock at $40.00 per share. The transaction was executed pursuant to a pre-arranged Rule 10b5-1 plan dated June 13, 2025, indicating it was scheduled in advance. Following this sale, Jacquemet continues to hold 123,157.5 shares directly, so the trade reflects only a portion of his overall stake.

Insider Trade Summary 10b5-1

Net Seller: 9,433 shares ($377,320)

Net Sell 1 txn

Insider Jacquemet Cyrille

Role Chief Revenue Officer

Sold 9,433 shs ($377K)

Type	Security	Shares	Price	Value
Sale	Common Stock	9,433	$40.00	$377K

Holdings After Transaction: Common Stock — 123,157.5 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 9,433 shares Sale price: $40.00 per share Shares held after sale: 123,157.5 shares +1 more

4 metrics

Shares sold 9,433 shares Open-market sale of Common Stock

Sale price $40.00 per share Price for 9,433-share sale

Shares held after sale 123,157.5 shares Direct ownership following transaction

Net shares sold 9,433 shares Net-sell direction in transaction summary

Key Terms

Rule 10b5-1 plan, open-market sale, Common Stock

3 terms

Rule 10b5-1 plan financial

"Reflects shares sold pursuant to a Rule 10b5-1 plan dated June 13, 2025."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

open-market sale financial

"transaction_action: "open-market sale" for 9,433 shares of Common Stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock" for the reported transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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).

X

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^*

Jacquemet Cyrille

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Revenue Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

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	05/26/2026		S		9,433(1)	D	$40	123,157.5	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. Reflects shares sold pursuant to a Rule 10b5-1 plan dated June 13, 2025.

	/s/ Megan Chung, as Attorney-in-Fact for Cyrille Jacquemet	05/27/2026
	** 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 insider transaction did Ouster (OUST) report for Cyrille Jacquemet?

Ouster reported that Chief Revenue Officer Cyrille Jacquemet sold 9,433 shares of Common Stock at $40.00 per share. This open-market transaction was disclosed on Form 4 and leaves him with 123,157.5 shares directly owned afterward.

Was the Ouster (OUST) insider sale by Cyrille Jacquemet part of a Rule 10b5-1 plan?

Yes. The filing states the 9,433-share sale was executed under a Rule 10b5-1 trading plan dated June 13, 2025. Such plans are pre-arranged, which generally makes the timing more routine rather than discretionary.

How many Ouster (OUST) shares does Cyrille Jacquemet hold after the reported sale?

After the reported transaction, Cyrille Jacquemet directly holds 123,157.5 shares of Ouster Common Stock. This remaining stake is significantly larger than the 9,433 shares sold in the open-market transaction disclosed in the Form 4.

What price did Cyrille Jacquemet receive per Ouster (OUST) share in the Form 4 sale?

The Form 4 shows that Cyrille Jacquemet sold 9,433 Ouster Common Stock shares at an average price of $40.00 per share. This price applies to the entire reported transaction executed on the stated trade date.

What does the Form 4 mean for Ouster (OUST) shareholders?

The Form 4 records a single open-market sale of 9,433 shares by the Chief Revenue Officer under a Rule 10b5-1 plan. It reflects individual liquidity management and leaves him holding 123,157.5 shares, so it represents only part of his overall position.