[144] AMBARELLA INC SEC Filing

Rhea-AI Filing Summary

Ambarella, Inc. filed a Form 144 notifying a proposed sale of 2,664 common shares with an aggregate market value of $227,444.59. The shares are scheduled for sale approximately on 10/06/2025 on NASDAQ. The filing lists six restricted‑stock grants from the issuer dated between 12/15/2020 and 09/15/2025 that together total the 2,664 shares to be sold, and shows no securities sold by the reporting person in the past three months. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information about the issuer.

Insights

Insider Transactions Analyst

Small insider sale of restricted stock, filed under Rule 144.

The filing documents a proposed sale of $227,444.59 worth of common stock arising from six restricted stock grants spanning 2020–2025

The sale is listed for 10/06/2025 on NASDAQ; the filing also confirms no sales in the past three months. Monitor public disclosures or subsequent Form 4 filings for actual sale execution or any change in the stated plan within days following the listed date.

Compliance & Regulatory Specialist

Form 144 documents Rule 144 notice and the seller's statutory attestations.

The submission provides required acquisition details including dates and that the securities were granted as restricted stock by the issuer, and contains the statutory representation about material nonpublic information.

Watch for a related Form 4 after the sale date showing execution details and confirm that the transaction follows the trading plan/Rule 10b5‑1 timing if one exists.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	2664	227444.59	42689006	10/06/2025	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	Restricted Stock	Issuer			545	03/15/2023	Not Applicable
Common	12/15/2020	Restricted Stock	Issuer			143	12/15/2020	Not Applicable
Common	03/15/2022	Restricted Stock	Issuer			264	03/15/2022	Not Applicable
Common	09/15/2025	Restricted Stock	Issuer			844	09/15/2025	Not Applicable
Common	06/15/2022	Restricted Stock	Issuer			264	06/15/2022	Not Applicable
Common	06/15/2021	Restricted Stock	Issuer			604	06/15/2021	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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)