Ambarella (AMBA) director reports sale of 624 shares at $72.3771

Rhea-AI Filing Summary

Ambarella Inc. director reports small share sale

A director of Ambarella Inc., Elizabeth M. Schwarting, reported selling 624 ordinary shares of the company on 12/16/2025. The sale was reported at a price of $72.3771 per share. After this transaction, she directly beneficially owns 6,690 Ambarella shares. The filing is made on behalf of one reporting person and reflects a routine insider transaction by a company director.

Insider Trade Summary

Net Seller: 624 shares ($45,163)

Net Sell 1 txn

Insider Schwarting Elizabeth M

Role Director

Sold 624 shs ($45K)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	624	$72.3771	$45K

Holdings After Transaction: Ordinary Shares — 6,690 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

Schwarting Elizabeth M

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/16/2025

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	12/16/2025		S		624	D	$72.3771	6,690	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	By: /s/ Michael Morehead, Attorney-in-Fact For: Elizabeth M. Schwarting	12/18/2025
	** 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.

FAQ

What insider transaction did Ambarella (AMBA) report in this Form 4?

A director, Elizabeth M. Schwarting, reported selling 624 ordinary shares of Ambarella Inc. on 12/16/2025 at a price of $72.3771 per share.

How many Ambarella (AMBA) shares does the reporting person own after the transaction?

Following the reported sale, the director beneficially owns 6,690 Ambarella ordinary shares, held in direct ownership.

What is the relationship of the reporting person to Ambarella (AMBA)?

The reporting person, Elizabeth M. Schwarting, is listed as a Director of Ambarella Inc. on the Form 4.

When did the Ambarella (AMBA) insider transaction occur?

The transaction date reported is 12/16/2025, which is shown as the earliest transaction date for this Form 4.

Is this Ambarella (AMBA) Form 4 filed for one or multiple reporting persons?

The filing indicates it is a Form 4 filed by one reporting person, not a joint filing.

What type of security was sold in the Ambarella (AMBA) Form 4?

The transaction involves Ambarella ordinary shares, as disclosed in Table I of the Form 4.