Were the Ambarella (AMBA) CEO’s share sales part of a trading plan?

Yes. The filing states the sales were made under a Rule 10b5-1 trading plan adopted on October 8, 2025 . Such plans prearrange trade timing and size, aiming to reduce discretion over individual sale decisions.

Ambarella (AMBA) CEO sells 32,500 shares in planned 10b5-1 trades

Q: What did Ambarella (AMBA) CEO Feng-Ming Wang report in this Form 4?

Feng-Ming Wang reported selling a total of 32,500 Ordinary Shares of Ambarella in open-market transactions. The sales occurred on May 26, 2026, and were executed in three tranches at prices around $90–$92 per share .

Q: At what prices did the Ambarella (AMBA) CEO sell his shares?

The reported weighted average sale prices were $92.0487 , $91.2294 , and $90.3791 per share. Footnotes state the individual trades occurred in ranges from $90.00 to $92.50 per share across the three tranches.

Q: How many separate transactions did the Ambarella (AMBA) Form 4 report?

The Form 4 reports three non-derivative transactions, all coded as open-market or private sales (transaction code S ). Together, these sales totaled 32,500 Ordinary Shares of Ambarella on May 26, 2026.

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

AMBARELLA INC CEO Feng-Ming Wang reported open-market sales of a total of 32,500 Ordinary Shares on May 26, 2026. The transactions were executed in three tranches at reported prices of $92.0487, $91.2294, and $90.3791 per share, within price ranges from $90.00 to $92.50. These sales were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on October 8, 2025, and Wang held 806,061 shares directly after the transactions.

Insider Trade Summary 10b5-1

Net Seller: 32,500 shares ($2,957,755)

Net Sell 3 txns

Insider Wang Feng-Ming

Role CEO

Sold 32,500 shs ($2.96M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	17,285	$90.3791	$1.56M
Sale	Ordinary Shares	6,065	$91.2294	$553K
Sale	Ordinary Shares	9,150	$92.0487	$842K

Holdings After Transaction: Ordinary Shares — 821,276 shares (Direct, null)

Footnotes (1)

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on October 8, 2025. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $90.00 to $$90.98 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $91.00 to $91.98 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $92.00 to $92.50 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.

Key Figures

Total shares sold: 32,500 shares Price tranche 1: $92.0487 per share Price tranche 2: $91.2294 per share +3 more

6 metrics

Total shares sold 32,500 shares Ordinary Shares sold on May 26, 2026

Price tranche 1 $92.0487 per share Weighted average sale price, non-derivative sale

Price tranche 2 $91.2294 per share Weighted average sale price, non-derivative sale

Price tranche 3 $90.3791 per share Weighted average sale price, non-derivative sale

Post-transaction holdings 806,061 shares Ordinary Shares directly owned after sales

Price range across trades $90.00–$92.50 per share Ranges disclosed in footnotes F2–F4

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, open-market sale, Ordinary Shares

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on October 8, 2025."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sale price financial

"The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold..."

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Ordinary Shares financial

"security_title: Ordinary Shares"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

Form 4 Insider Transactions: What Each Field Means →

05/28/2026 - 08:02 PM

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^*

Wang Feng-Ming

(Last)

(First)

(Middle)

3001 TASMAN DRIVE

(Street)

SANTA CLARA

CALIFORNIA

95054

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AMBARELLA INC [ AMBA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	05/26/2026		S⁽¹⁾		17,285	D	$90.3791⁽²⁾	821,276	D
Ordinary Shares	05/26/2026		S⁽¹⁾		6,065	D	$91.2294⁽³⁾	815,211	D
Ordinary Shares	05/26/2026		S⁽¹⁾		9,150	D	$92.0487⁽⁴⁾	806,061	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on October 8, 2025.

2. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $90.00 to $$90.98 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.

3. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $91.00 to $91.98 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.

4. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $92.00 to $92.50 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4.

	By: /s/ Michael Morehead, Attorney-in-Fact For: Feng-Ming Wang	05/28/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Ambarella (AMBA) CEO Feng-Ming Wang report in this Form 4?

Feng-Ming Wang reported selling a total of 32,500 Ordinary Shares of Ambarella in open-market transactions. The sales occurred on May 26, 2026, and were executed in three tranches at prices around $90–$92 per share.

How many Ambarella (AMBA) shares does the CEO hold after these sales?

After the reported transactions, CEO Feng-Ming Wang directly holds 806,061 Ordinary Shares of Ambarella. This figure reflects his remaining stake following the sale of 32,500 shares disclosed in the Form 4 filing.

At what prices did the Ambarella (AMBA) CEO sell his shares?

The reported weighted average sale prices were $92.0487, $91.2294, and $90.3791 per share. Footnotes state the individual trades occurred in ranges from $90.00 to $92.50 per share across the three tranches.

How many separate transactions did the Ambarella (AMBA) Form 4 report?

The Form 4 reports three non-derivative transactions, all coded as open-market or private sales (transaction code S). Together, these sales totaled 32,500 Ordinary Shares of Ambarella on May 26, 2026.