What additional OUST share acquisition is mentioned in Cyrille Jacquemet’s Form 4?

The Form 4 notes that Jacquemet’s holdings include 616 Ouster shares acquired on May 15, 2026. These shares were obtained through the company’s Amended and Restated 2022 Employee Stock Purchase Plan, reflecting participation in an employee-focused stock purchase program.

Ouster (NYSE: OUST) CRO Cyrille Jacquemet sells 10,000 shares under 10b5-1 plan

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Ouster, Inc. Chief Revenue Officer Cyrille Jacquemet reported an open-market sale of company stock. On this Form 4, he sold 10,000 shares of Ouster common stock at a price of $35.00 per share. The transaction was executed as an open-market sale.

After this sale, Jacquemet directly holds 132,590.5 shares of Ouster common stock, which includes 616 shares acquired on May 15, 2026 through the company’s Amended and Restated 2022 Employee Stock Purchase Plan. The filing notes that the sale was conducted under a pre-arranged Rule 10b5-1 trading plan.

Insider Trade Summary 10b5-1

Net Seller: 10,000 shares ($350,000)

Net Sell 1 txn

Insider Jacquemet Cyrille

Role Chief Revenue Officer

Sold 10,000 shs ($350K)

Type	Security	Shares	Price	Value
Sale	Common Stock	10,000	$35.00	$350K

Holdings After Transaction: Common Stock — 132,590.5 shares (Direct, null)

Footnotes (1)

Reflects shares sold pursuant to a Rule 10b5-1 plan dated June 13, 2025. Includes 616 shares of common stock acquired by the Reporting Person on May 15, 2026, pursuant to the Company's Amended and Restated 2022 Employee Stock Purchase Plan.

Key Figures

Shares sold: 10,000 shares Sale price: $35.00 per share Estimated transaction value: $350,000 +2 more

5 metrics

Shares sold 10,000 shares Open-market sale of Ouster common stock

Sale price $35.00 per share Price for the 10,000-share open-market sale

Estimated transaction value $350,000 10,000 shares sold at $35.00 per share

Shares held after transaction 132,590.5 shares Direct Ouster holdings following the sale

ESPP shares included 616 shares Acquired May 15, 2026 under 2022 Employee Stock Purchase Plan

Key Terms

Rule 10b5-1 plan, open-market sale, Amended and Restated 2022 Employee Stock Purchase Plan

3 terms

Rule 10b5-1 plan regulatory

"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""

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.

Amended and Restated 2022 Employee Stock Purchase Plan financial

"pursuant to the Company's Amended and Restated 2022 Employee Stock Purchase Plan."

Form 4 Insider Transactions: What Each Field Means →

05/21/2026 - 09:30 PM

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^*

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)
05/14/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/14/2026		S		10,000⁽¹⁾	D	$35	132,590.5⁽²⁾	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

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

2. Includes 616 shares of common stock acquired by the Reporting Person on May 15, 2026, pursuant to the Company's Amended and Restated 2022 Employee Stock Purchase Plan.

	/s/ Megan Chung, as Attorney-in-Fact for Cyrille Jacquemet	05/21/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did OUST Chief Revenue Officer Cyrille Jacquemet report?

Cyrille Jacquemet reported selling 10,000 shares of Ouster common stock in an open-market transaction at $35.00 per share. This Form 4 filing reflects a discretionary stock sale, documented as a planned trade under a Rule 10b5-1 trading plan.

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

After the sale, Cyrille Jacquemet directly holds 132,590.5 Ouster shares. This total includes 616 shares of common stock acquired on May 15, 2026 under the company’s Amended and Restated 2022 Employee Stock Purchase Plan, as noted in the Form 4 footnote.

At what price were the OUST shares sold in Cyrille Jacquemet’s Form 4 filing?

The 10,000 Ouster shares were sold at $35.00 per share in an open-market sale. This sale price is explicitly disclosed in the Form 4 transaction details, which classify the transaction as a standard open-market disposition of common stock.

Was the OUST insider sale by Cyrille Jacquemet made under a Rule 10b5-1 plan?

Yes. The Form 4 footnote states the 10,000-share sale was executed pursuant to a Rule 10b5-1 trading plan dated June 13, 2025. Such plans are pre-arranged trading programs designed to systematically sell shares over time.