Ambarella insider sells 3,765 shares at $70.32 average price

Ambarella, Inc. insider transaction: Chi-Hong Ju, Senior VP, Systems & GM, Asia, reported selling 3,765 ordinary shares of Ambarella Inc. on 12/30/2025.

Rhea-AI Filing Summary

Ambarella, Inc. insider transaction: Chi-Hong Ju, Senior VP, Systems & GM, Asia, reported selling 3,765 ordinary shares of Ambarella Inc. on 12/30/2025. The sale, coded as an "S" transaction, was executed at a weighted average price of $70.32 per share, with individual trades occurring in a price range from $70.24 to $70.43 per share. After this sale, the reporting person beneficially owns 153,767 ordinary shares directly.

In addition, the filing shows 8,000 ordinary shares held indirectly by a foundation. The reporter has indicated willingness to provide detailed breakdowns of the number of shares sold at each price within the disclosed range to the Commission staff, the issuer, or any security holder upon request.

Insider Trade Summary

Net Seller: 3,765 shares

Net Sell 2 txns

Insider Ju Chi-Hong

Role Senior VP, Systems & GM, Asia

Sold 3,765 shs ($265K)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	3,765	$70.32	$265K
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Ordinary Shares — 153,767 shares (Direct); Ordinary Shares — 8,000 shares (Indirect, by Foundation)

Footnotes (1)

1. F1. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $70.24 to $70.43 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.

FAQ

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

What insider transaction did AMBA executive Chi-Hong Ju report?

Chi-Hong Ju, Senior VP, Systems & GM, Asia of Ambarella Inc. (AMBA), reported an open-market sale of 3,765 ordinary shares on 12/30/2025.

At what price did the AMBA insider sell the shares?

The sale was reported at a weighted average price of $70.32 per share, with individual trades executed between $70.24 and $70.43 per share.

How many AMBA shares does the insider own after this transaction?

Following the reported sale, the insider beneficially owns 153,767 ordinary shares directly and 8,000 ordinary shares indirectly through a foundation.

Was the AMBA Form 4 filed by one or multiple reporting persons?

The Form 4 was filed by one reporting person, as indicated in the filing.

Can investors get more detail on the AMBA insider’s sale prices?

Yes. The insider states they will provide full information on the number of shares sold at each separate price within the $70.24–$70.43 range upon request by the Commission staff, the issuer, or an Ambarella security holder.

What is the insider’s role at Ambarella Inc. (AMBA)?

The reporting person serves as an Officer of Ambarella Inc., with the title Senior VP, Systems & GM, Asia.

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

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Accepted by SEC EDGAR 12/31/2025 - 05:21 PM Learn about SEC filing dates

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^*

Ju Chi-Hong

(Last) (First) (Middle)

3001 TASMAN DRIVE

(Street)

SANTA CLARA CA 95054

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior VP, Systems & GM, Asia

3. Date of Earliest Transaction (Month/Day/Year)
12/30/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	12/30/2025		S		3,765	D	$70.32(1)	153,767	D
Ordinary Shares								8,000	I	by Foundation

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $70.24 to $70.43 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: Chi-Hong Ju	12/31/2025
	** 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.