AMBA Form 144: Proposed resale of 2,017 shares

AMBA submitted a Form 144 notice listing proposed sales of Common Stock through Morgan Stanley Smith Barney LLC.

Rhea-AI Filing Summary

AMBA submitted a Form 144 notice listing proposed sales of Common Stock through Morgan Stanley Smith Barney LLC. The filing lists a reported sale of 2,017 shares on 06/17/2026 with an associated proceeds figure of $136,884.92. The submission also lists multiple restricted stock vesting lots (e.g., 3,032 shares vesting 06/15/2020, 2,695 shares vesting 09/15/2020, and other smaller vesting lots).

The broker-dealer named is Morgan Stanley Smith Barney LLC at 1 New York Plaza, New York. The filing is a notice of proposed resale activity under securities law; timing and additional distribution method details are not provided in the excerpt.

Insights

Securities Compliance Counsel

Form 144 lists a proposed resale via Morgan Stanley and specific vested share lots.

The notice identifies a reported sale of $136,884.92 tied to 2,017 shares on 06/17/2026 and enumerates restricted stock vesting events with exact share counts and dates. It names Morgan Stanley Smith Barney LLC as the broker-dealer.

Regulatory consequences depend on Rule 144 conditions and affiliate status; follow-up filings or broker confirmations will show execution details. Subsequent public disclosures may state whether the proposed sales were completed.

Key Figures

Reported shares sold: 2,017 shares Proceeds shown: $136,884.92 Vesting lot: 3,032 shares +6 more

9 metrics

Reported shares sold 2,017 shares sale date <date>06/17/2026</date>

Proceeds shown $136,884.92 associated with the 2,017-share transaction on <date>06/17/2026</date>

Vesting lot 3,032 shares Restricted stock vesting under a registered plan on <date>06/15/2020</date>

Vesting lot 2,695 shares Restricted stock vesting under a registered plan on <date>09/15/2020</date>

Vesting lot 1,037 shares Restricted stock vesting under a registered plan on <date>09/15/2023</date>

Vesting lot 1,011 shares Restricted stock vesting under a registered plan on <date>12/15/2023</date>

Vesting lot 715 shares Restricted stock vesting under a registered plan on <date>03/07/2024</date>

Vesting lot 1,308 shares Restricted stock vesting under a registered plan on <date>03/15/2024</date>

Vesting lot 202 shares Restricted stock vesting under a registered plan on <date>06/15/2024</date>

Key Terms

Form 144, Restricted Stock Vesting, Broker-dealer

3 terms

Form 144 regulatory

"Form 144 notice listing proposed sales and broker-dealer information"

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.

Restricted Stock Vesting financial

"Restricted Stock Vesting Under a Registered Plan entries with dates and share counts"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Broker-dealer financial

"Morgan Stanley Smith Barney LLC listed as intermediary at 1 New York Plaza"

A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.

FAQ

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

What does the AMBA Form 144 show about insider sales?

The notice records a reported transaction of 2,017 shares on 06/17/2026 with proceeds of $136,884.92. It is a pre-sale notice and does not by itself confirm execution or settlement of the sale.

Who is the broker named in the AMBA Form 144 filing?

The filing names Morgan Stanley Smith Barney LLC at 1 New York Plaza, New York. The broker-dealer is listed as the intermediary for the proposed resale of Common Stock in the notice.

Does the Form 144 list other share lots related to AMBA equity awards?

Yes. The filing lists multiple restricted stock vesting lots, including 3,032 shares (06/15/2020), 2,695 shares (09/15/2020), and additional vesting entries with exact share counts and dates.

Does the Form 144 confirm the timing or method of sale for AMBA shares?

No. The notice records a proposed resale and a reported transaction date, but it does not specify distribution methods or confirm completed trades. Execution details typically appear in broker records or subsequent disclosures.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 07/01/2026 - 04:58 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	0001882831
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	CHIHONG JOHN JU
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	10000	888398.00	43868185	07/01/2026	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	06/15/2020	Restricted Stock Vesting Under a Registered Plan	Issuer			3032	06/15/2020	Not Applicable
Common	09/15/2020	Restricted Stock Vesting Under a Registered Plan	Issuer			2695	09/15/2020	Not Applicable
Common	09/15/2023	Restricted Stock Vesting Under a Registered Plan	Issuer			1037	09/15/2023	Not Applicable
Common	12/15/2023	Restricted Stock Vesting Under a Registered Plan	Issuer			1011	12/15/2023	Not Applicable
Common	03/07/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			715	03/07/2024	Not Applicable
Common	03/15/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			1308	03/15/2024	Not Applicable
Common	06/15/2024	Restricted Stock Vesting Under a Registered Plan	Issuer			202	06/15/2024	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
CHIHONG JOHN JU 3001 Tasman Drive Santa Clara CA 95054	Common	06/17/2026	2017	136884.92

144: Remarks and Signature

Remarks
Date of Notice	07/01/2026
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/ Chi Hong John Ju
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)