Ambarella SVP sells 2,017 shares to cover taxes

Ambarella Senior VP Ju Chi-Hong reported an open-market sale of 2,017 Ordinary Shares at $67.87 per share on June 17, 2026.

Rhea-AI Filing Summary

Ambarella Senior VP Ju Chi-Hong reported an open-market sale of 2,017 Ordinary Shares at $67.87 per share on June 17, 2026. According to the footnote, the shares were sold to pay tax obligations arising from the vesting of restricted stock units, making this a routine, tax-related transaction. After the sale, Ju held 165,924 Ordinary Shares directly, and the report also shows 8,000 Ordinary Shares held indirectly through a foundation.

Insider Trade Summary

Net Seller: 2,017 shares

Net Sell 2 txns

Insider Ju Chi-Hong

Role Senior VP, Systems & GM

Sold 2,017 shs ($137K)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	2,017	$67.87	$137K
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Ordinary Shares — 165,924 shares (Direct); Ordinary Shares — 8,000 shares (Indirect, by Foundation)

Footnotes (1)

1. F1. Shares sold to pay tax obligations resulting from the vesting of restricted stock units.

Key Figures

Shares sold: 2,017 shares Sale price per share: $67.87 per share Direct holdings after transaction: 165,924 shares +1 more

4 metrics

Shares sold 2,017 shares Open-market sale on June 17, 2026

Sale price per share $67.87 per share Ordinary Shares sold by Ju Chi-Hong

Direct holdings after transaction 165,924 shares Ordinary Shares held directly after sale

Indirect holdings 8,000 shares Ordinary Shares held indirectly by foundation

Key Terms

restricted stock units, open-market sale, indirect ownership, Ordinary Shares

4 terms

restricted stock units financial

"tax obligations resulting from the vesting of restricted stock units"

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.

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.

indirect ownership financial

"direct_or_indirect": "I", "nature_of_ownership": "by Foundation""

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.

FAQ

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

What insider transaction did Ambarella (AMBA) report for Ju Chi-Hong?

Ambarella Senior VP Ju Chi-Hong reported selling 2,017 Ordinary Shares on June 17, 2026 at $67.87 per share. The sale was described as covering tax obligations from vested restricted stock units, indicating a routine tax-driven transaction rather than a discretionary portfolio move.

Why did Ambarella executive Ju Chi-Hong sell 2,017 AMBA shares?

The 2,017-share sale by Ju Chi-Hong was made to pay tax obligations linked to the vesting of restricted stock units. This suggests the transaction was primarily mechanical and tax-related, not a strategic decision to reduce exposure to Ambarella shares in the open market.

How many Ambarella (AMBA) shares does Ju Chi-Hong hold after this sale?

Following the sale, Ju Chi-Hong held 165,924 Ordinary Shares directly. The report also shows 8,000 Ordinary Shares held indirectly through a foundation, indicating the executive maintains a substantial overall position in Ambarella stock after this routine tax-related transaction.

Was the Ambarella (AMBA) insider sale by Ju Chi-Hong a large portion of his holdings?

The sale of 2,017 shares is small compared with Ju Chi-Hong’s 165,924 directly held shares. This indicates the transaction represents only a minor portion of his position and is characterized as a tax-related sale tied to restricted stock unit vesting.

Does the Ambarella (AMBA) filing show any derivative or option exercises for Ju Chi-Hong?

The report does not list any derivative transactions or option exercises for Ju Chi-Hong in this event. It only shows an open-market sale of 2,017 Ordinary Shares and a separate holding entry reflecting 8,000 shares held indirectly by a foundation associated with him.

How are Ju Chi-Hong’s indirect Ambarella (AMBA) holdings reported?

The report shows 8,000 Ordinary Shares held indirectly, noted as held “by Foundation.” This indicates a portion of his economic interest in Ambarella is held through a foundation structure, separate from his direct holding of 165,924 shares after the reported sale.

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

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Accepted by SEC EDGAR 06/18/2026 - 04:54 PM EDT 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 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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/17/2026

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)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	06/17/2026		S		2,017(1)	D	$67.87	165,924	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. Shares sold to pay tax obligations resulting from the vesting of restricted stock units.

	By: /s/ Michael Morehead, Attorney-in-Fact For: Chi-Hong Ju	06/18/2026
	** 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)