AMBA affiliate files Form 144 to sell 5,958 shares

AMBA affiliate reports a proposed sale of 5,958 shares of Common Stock on Form 144.

Rhea-AI Filing Summary

AMBA affiliate reports a proposed sale of 5,958 shares of Common Stock on Form 144. The filing lists an aggregate dollar amount of $468,656.28 and a filing date of 07/09/2026. The excerpt also shows a prior sale by Yun‑Lung Chen of 9,856 shares on 06/12/2026 for $660,946.32. The securities referenced include Performance Stock Units dated 03/15/2023.

Insights

Securities Counsel

Form 144 notice records a proposed affiliate sale of 5,958 common shares and prior recent disposals.

Form 144 is a notice of a proposed sale by an affiliate under Rule 144. The filing here lists 5,958 shares with an aggregate dollar figure of $468,656.28 and cites a prior reported sale of 9,856 shares on 06/12/2026.

Regulatory treatment depends on Rule 144 conditions like holding period, volume limitations, and current public information; timing and broker/dealer methods are not detailed in the excerpt.

Key Figures

Proposed sale: 5,958 shares Aggregate amount (filed): $468,656.28 Prior sale in past 3 months: 9,856 shares +2 more

5 metrics

Proposed sale 5,958 shares Form 144 line item

Aggregate amount (filed) $468,656.28 Filed alongside the 5,958 shares

Prior sale in past 3 months 9,856 shares Sold on 06/12/2026 by Yun‑Lung Chen

Prior sale aggregate $660,946.32 Amount reported for 9,856 shares on 06/12/2026

Performance Stock Units grant date 03/15/2023 Security grant date listed in the excerpt

Key Terms

Form 144, Performance Stock Units, Aggregate dollar amount

3 terms

Form 144 regulatory

"Securities To Be Sold / Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Performance Stock Units financial

"Performance Stock Units | Issuer | 03/15/2023"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Aggregate dollar amount financial

"468656.28 | 43868185 | 07/09/2026"

FAQ

What does AMBA's Form 144 filing report?

It reports a proposed sale of 5,958 shares of Common Stock with an aggregate figure of $468,656.28 and a filing date of 07/09/2026. The filing lists the security type as Performance Stock Units dated 03/15/2023.

Who is the selling party named in the excerpt for AMBA?

Yun‑Lung Chen is named in the excerpt. The filing also shows a recent sale by this person of 9,856 shares on 06/12/2026 with an aggregate amount of $660,946.32 reported in the table.

Does the Form 144 excerpt show prior sales in the last three months?

Yes; the excerpt contains a "Securities Sold During The Past 3 Months" row showing a sale of 9,856 shares on 06/12/2026 for $660,946.32, attributed to Yun‑Lung Chen in the provided lines.

What security type is associated with the shares in the AMBA filing?

The filing identifies the securities as Common Stock tied to Performance Stock Units with a grant date of 03/15/2023. The excerpt pairs the share counts with that award type explicitly.

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

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Available on EDGAR 07/09/2026 - 04:24 PM Accepted by SEC EDGAR 07/09/2026 - 04:23 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001602676
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	AMBARELLA, INC.
SEC File Number	001-35667
Address of Issuer	3001 Tasman Drive Santa Clara CALIFORNIA 95054
Phone	408-734-8888
Name of Person for Whose Account the Securities are To Be Sold	YUN-LUNG CHEN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	5958	468656.28	43868185	07/09/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/15/2023	Performance Stock Units	Issuer			5958	03/15/2023	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
YUN-LUNG CHEN 3001 Tasman Drive Santa Clara CA 95054	Common	06/12/2026	9856	660946.32

144: Remarks and Signature

Remarks
Date of Notice	07/09/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Yun Lung Chen
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)