Feng‑Ming Wang files Form 144 to sell 32,500 RSUs

Feng-Ming Wang filed a Form 144 reporting a proposed sale of 32,500 Restricted Stock Units originally dated 06/15/2015.

Rhea-AI Filing Summary

Feng-Ming Wang filed a Form 144 reporting a proposed sale of 32,500 Restricted Stock Units originally dated 06/15/2015. The filing also discloses recent open-market sales: 8,083 shares on 03/19/2026 for $437,613.62, 18,976 shares on 03/17/2026 for $1,001,363.52, and 50,000 shares on 03/02/2026 for $3,040,035.00.

The broker listed is Morgan Stanley Smith Barney LLC. One of the transactions is labeled a 10b5-1 sale. The filing provides sale quantities, dates, and gross proceeds; timing and any remaining holdings are not stated in the excerpt.

Insights

Equity Capital Markets Analyst

Routine insider resale filing showing planned RSU sale and recent 10b5-1 activity.

The filing lists a proposed sale of 32,500 Restricted Stock Units dated 06/15/2015 and discloses three recent cash transactions: $437,613.62 for 8,083 shares, $1,001,363.52 for 18,976 shares, and $3,040,035.00 for 50,000 shares. One entry is explicitly described as a 10b5-1 sale.

The excerpt shows transactional detail (quantities, dates, gross proceeds) but does not state whether proceeds go to the issuer or selling holder beyond the listed broker. Subsequent filings may disclose remaining holdings or consummation details.

Key Figures

Proposed RSUs to be sold: 32,500 Restricted Stock Units Sale on 03/19/2026: 8,083 shares / $437,613.62 Sale on 03/17/2026: 18,976 shares / $1,001,363.52 +2 more

5 metrics

Proposed RSUs to be sold 32,500 Restricted Stock Units Securities To Be Sold line dated 06/15/2015

Sale on 03/19/2026 8,083 shares / $437,613.62 Securities Sold During The Past 3 Months

Sale on 03/17/2026 18,976 shares / $1,001,363.52 Securities Sold During The Past 3 Months

Sale on 03/02/2026 (10b5-1) 50,000 shares / $3,040,035.00 Listed as a 10b5-1 sale in the excerpt

Broker Morgan Stanley Smith Barney LLC Filer Information / broker listed

Key Terms

Restricted Stock Units, 10b5-1 sale, Form 144

3 terms

Restricted Stock Units financial

"Securities To Be Sold | Restricted Stock Units | Issuer"

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.

10b5-1 sale regulatory

"10b5-1 Sales for FENG-MING WANG"

Form 144 regulatory

"Filer Information | 144: Filer 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.

FAQ

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

What did Feng-Ming Wang report in the Form 144 for AMBA?

The filing reports a proposed sale of 32,500 Restricted Stock Units and discloses three recent sales of 8,083, 18,976, and 50,000 shares on 03/19/2026, 03/17/2026, and 03/02/2026.

How much gross proceeds were reported from recent sales?

The disclosed gross proceeds are $437,613.62 for 8,083 shares, $1,001,363.52 for 18,976 shares, and $3,040,035.00 for 50,000 shares, as listed in the excerpt.

Were any sales executed under a prearranged plan?

Yes. The excerpt expressly labels the 50,000-share transaction on 03/02/2026 as a 10b5-1 sale, indicating a prearranged selling plan for that transaction.

Which broker is listed for the transactions in the filing?

The broker shown in the filing excerpt is Morgan Stanley Smith Barney LLC, with an address at 1 New York Plaza, 8th Floor, New York, NY as provided in the excerpt.

Does the filing state how many shares Wang will hold after these transactions?

The excerpt does not provide a post-transaction holding total or an explicit statement of remaining beneficial ownership; only proposed sale and recent sale quantities and proceeds are listed.

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

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Accepted by SEC EDGAR 05/26/2026 - 04:45 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	0001558686
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	4087348888
Name of Person for Whose Account the Securities are To Be Sold	FENG-MING WANG
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	Director
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	32500	2845375.00	43788879	05/26/2026	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	06/15/2015	Restricted Stock Units	Issuer			32500	06/15/2015	N/A

* 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
FENG-MING WANG 3001 Tasman Drive Santa Clara, CA 95054	Common	03/19/2026	8083	437613.62
FENG-MING WANG 3001 Tasman Drive Santa Clara, CA 95054	Common	03/17/2026	18976	1001363.52
10b5-1 Sales for FENG-MING WANG 3001 Tasman Drive Santa Clara, CA 95054	Common	03/02/2026	50000	3040035.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 06/15/2015 through 03/15/2022.
Date of Notice	05/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	10/08/2025
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/ Feng-Ming Wang
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)