Ouster CRO sells 8,896 shares for tax cover

Ouster’s chief revenue officer sold shares primarily to cover tax withholding after RSU vesting, retaining over one hundred thousand shares.

Rhea-AI Filing Summary

Ouster, Inc. (OUST) reported that Chief Revenue Officer Cyrille Jacquemet sold 8,896 shares of common stock on September 14, 2026 at a weighted average price of $33.9583 per share. The company states the shares were sold to cover withholding taxes from vested restricted stock units, leaving 105,538.5 shares held directly.

Insider Trade Summary

Net Seller: 8,896 shares

Net Sell 1 txn

Insider Jacquemet Cyrille

Role Chief Revenue Officer

Sold 8,896 shs ($302K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	8,896	$33.9583	$302K

Holdings After Transaction: Common Stock — 105,538.5 shares (Direct)

Footnotes (2)

1. F1. Reflects shares sold to cover withholding taxes incurred upon the vesting and settlement of restricted stock units.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.67 to $33.9661. The Reporting Person undertakes to provide 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 sold at each separate price within the range set forth in this footnote.

Key Figures

Shares sold: 8,896 shares Weighted average sale price: $33.9583 per share Post-transaction holdings: 105,538.5 shares +1 more

4 metrics

Shares sold 8,896 shares Common stock sale on September 14, 2026

Weighted average sale price $33.9583 per share Common stock sold on September 14, 2026

Post-transaction holdings 105,538.5 shares Directly held after the September 14, 2026 sale

Sale price range $33.67–$33.9661 per share Multiple transactions comprising the reported sale

Key Terms

withholding taxes, restricted stock units, weighted average price

3 terms

withholding taxes financial

"Reflects shares sold to cover withholding taxes incurred upon the vesting"

Withholding taxes are amounts a payer or government takes out of payments — such as wages, interest, or dividends — before the recipient gets the money, functioning like a cashier keeping part of a bill to pay taxes on your behalf. For investors this matters because it reduces the cash they actually receive, affects net returns and yield calculations, and may require additional paperwork or treaty claims to recover or offset the withheld amount against final tax bills.

restricted stock units financial

"incurred upon the vesting and settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

FAQ

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

What insider transaction did OUST report for Cyrille Jacquemet on September 14, 2026?

Ouster reported that Chief Revenue Officer Cyrille Jacquemet sold 8,896 shares of common stock on September 14, 2026 at a weighted average price of $33.9583 per share.

Why were shares of OUST sold by the chief revenue officer in this Form 4?

The filing states the shares were sold to cover withholding taxes incurred upon the vesting and settlement of restricted stock units, indicating the transaction was linked to equity compensation rather than a standalone discretionary sale.

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

After the reported sale, Cyrille Jacquemet directly holds 105,538.5 shares of Ouster common stock, as disclosed in the Form 4 following the September 14, 2026 transaction.

What price range did OUST report for the shares sold by the chief revenue officer?

The filing notes the price is a weighted average; the 8,896 shares were sold in multiple transactions at prices ranging from $33.67 to $33.9661 per share.

Was the OUST insider sale made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not selected, and no footnote describes a trading plan, so no Rule 10b5-1 plan is reported for this transaction.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/16/2026 - 07:01 PM Accepted by SEC EDGAR 09/16/2026 - 07:00 PM Learn about SEC filing dates

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)
09/14/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/14/2026		S		8,896(1)	D	$33.9583(2)	105,538.5	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 to cover withholding taxes incurred upon the vesting and settlement of restricted stock units.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.67 to $33.9661. The Reporting Person undertakes to provide 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 sold at each separate price within the range set forth in this footnote.

Remarks:

Exhibit List - Exhibit 24 - Power of Attorney

	/s/ Kenneth P. Gianella, as Attorney-in-Fact for Cyrille Jacquemet	09/16/2026
	** 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)