[Form 4] AMBARELLA INC Insider Trading Activity

Rhea-AI Filing Summary

Young John Alexander reported acquisition or exercise transactions in this Form 4 filing.

Ambarella CFO John Alexander Young reported equity awards tied to company performance and service. He was granted 15,201 Performance Stock Units at a stated price of $0.00 per unit, and his direct holdings of Ordinary Shares increased by 15,201 shares to a total of 117,939 shares.

Footnotes explain that one award of restricted stock units vests at a rate of 1/12 per quarter starting on March 15, 2026, with each unit representing one ordinary share. A separate performance-based RSU grant is scheduled to vest on March 15, 2029, with the final number of shares adjustable between 0% and 150% of the target amount based on total shareholder return and revenue growth from February 1, 2026 through January 31, 2029, subject to continued service.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Young John Alexander

Role CFO

Type	Security	Shares	Price	Value
Grant/Award	Performance Stock Units	15,201	$0.00	--
Grant/Award	Ordinary Shares	15,201	$0.00	--

Holdings After Transaction: Performance Stock Units — 15,201 shares (Direct); Ordinary Shares — 117,939 shares (Direct)

Footnotes (1)

1. The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2026. Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. Reporting person was granted an award of performance-based RSUs covering a target number of ordinary shares (the "Target RSU Number"). Pursuant to time-based vesting requirements, 100% of the Target RSU Number is scheduled to vest on March 15, 2029, subject to continued service requirements through such date. In addition, the number of shares subject to the RSUs may be decreased by up to 100% or increased by up to 150% of the Target RSU Number or may remain the same, based on the Company's total shareholder return and revenue growth rate over the period of February 1, 2026 through January 31, 2029.

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^*

Young John Alexander

(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)
	CFO

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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	03/02/2026		A		15,201(1)	A	$0.0	117,939	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
Performance Stock Units	(2)	03/02/2026		A		15,201		(3)	03/15/2029(3)	Ordinary Shares	15,201	$0.0	15,201	D

Explanation of Responses:

1. The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2026.

2. Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares.

3. Reporting person was granted an award of performance-based RSUs covering a target number of ordinary shares (the "Target RSU Number"). Pursuant to time-based vesting requirements, 100% of the Target RSU Number is scheduled to vest on March 15, 2029, subject to continued service requirements through such date. In addition, the number of shares subject to the RSUs may be decreased by up to 100% or increased by up to 150% of the Target RSU Number or may remain the same, based on the Company's total shareholder return and revenue growth rate over the period of February 1, 2026 through January 31, 2029.

	By: /s/ Michael Morehead, Attorney-in-Fact For: John Young	03/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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