Ambarella director awarded 3,151 RSUs

Ambarella director Christopher B. Paisley received a new annual RSU grant vesting quarterly through September 15, 2027.

Rhea-AI Filing Summary

AMBARELLA INC (symbol: AMBA) is the issuer of record for a Form 4 filing submitted to the SEC. PAISLEY CHRISTOPHER B reported acquisition or exercise transactions in this Form 4 filing.

AMBARELLA INC (AMBA) reported that director Christopher B. Paisley received an annual restricted stock unit (RSU) grant covering 3,151 Ordinary Shares effective September 8, 2026. The award was approved by the Board of Directors for each independent director and is held as a direct ownership position.

The RSUs vest in four equal installments, with 1/4 of the shares vesting every three months starting from the vesting start date of September 15, 2026, and becoming 100% vested on September 15, 2027, subject to Mr. Paisley’s continued service with the company. Following this grant, he directly holds 44,180 Ordinary Shares.

Insider Trade Summary

Grant/Award: 3,151 shares

Grant/Award 1 txn

Insider PAISLEY CHRISTOPHER B

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Ordinary Shares F1	3,151	$0.00	$0.00

Holdings After Transaction: Ordinary Shares — 44,180 shares (Direct)

Footnotes (1)

1. F1. Effective as of September 8, 2026, the Board of Directors approved an annual restricted stock unit grant of 3,151 Ordinary Shares to each independent director. The RSU grant vests as to 1/4th of the Ordinary Shares each three months following the vesting start date of September 15, 2026, so as to be 100% vested on September 15, 2027, subject to continued service with the Company.

Key Figures

RSU grant size: 3,151 Ordinary Shares Shares held after transaction: 44,180 Ordinary Shares Reported transaction price per share: $0.0000 +3 more

6 metrics

RSU grant size 3,151 Ordinary Shares Annual restricted stock unit grant to each independent director effective September 8, 2026

Shares held after transaction 44,180 Ordinary Shares Direct holdings of Christopher B. Paisley following the RSU grant

Reported transaction price per share $0.0000 Indicates the RSU grant was an equity award with no cash purchase price

Vesting start date September 15, 2026 Date from which quarterly vesting of the RSUs begins

Full vesting date September 15, 2027 Date on which the RSU grant becomes 100% vested, subject to continued service

Vesting frequency 1/4 every three months RSUs vest in four equal quarterly installments after the vesting start date

Key Terms

restricted stock unit, independent director, vesting start date

3 terms

restricted stock unit financial

"approved an annual restricted stock unit grant of 3,151 Ordinary Shares"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

independent director financial

"annual restricted stock unit grant of 3,151 Ordinary Shares to each independent director"

An independent director is a member of a company's board of directors who is not involved in the company's day-to-day operations and has no significant relationships with the company that could influence their judgment. Their role is to provide unbiased oversight and ensure the company is managed in the best interests of all shareholders. This helps build trust and confidence among investors by promoting transparency and accountability.

vesting start date financial

"each three months following the vesting start date of September 15, 2026"

FAQ

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

What did AMBA director Christopher B. Paisley acquire in this Form 4 filing for AMBA?

Christopher B. Paisley received a grant of restricted stock units covering 3,151 Ordinary Shares of Ambarella Inc. (AMBA). The grant was approved by the Board of Directors as an annual RSU award to each independent director effective September 8, 2026.

What is the vesting schedule of the new RSU grant reported by AMBA for its director?

The RSU grant of 3,151 Ordinary Shares vests as to 1/4 of the shares every three months after the vesting start date of September 15, 2026, and will be 100% vested on September 15, 2027, subject to continued service with Ambarella Inc.

How many AMBA shares does Christopher B. Paisley hold after this RSU grant?

After the reported RSU grant, Christopher B. Paisley directly holds 44,180 Ordinary Shares of Ambarella Inc. This figure includes the impact of the 3,151-share RSU award reported in the Form 4 filing.

Did the AMBA director pay a price per share for the RSU grant disclosed in the Form 4?

No cash price per share was paid for this RSU grant; the Form 4 reports a transaction price per share of $0.0000, reflecting that it is a board-approved equity award rather than a market purchase of Ambarella shares.

Was the AMBA Form 4 transaction under a Rule 10b5-1 trading plan?

The filing indicates that no Rule 10b5-1 trading plan is reported for this transaction. It is characterized as a grant or award acquisition approved by Ambarella’s Board of Directors for an independent director.

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

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Available on EDGAR 09/10/2026 - 04:48 PM Accepted by SEC EDGAR 09/10/2026 - 04:47 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^*

PAISLEY CHRISTOPHER B

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2026

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	09/08/2026		A		3,151(1)	A	$0.0	44,180	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:

1. Effective as of September 8, 2026, the Board of Directors approved an annual restricted stock unit grant of 3,151 Ordinary Shares to each independent director. The RSU grant vests as to 1/4th of the Ordinary Shares each three months following the vesting start date of September 15, 2026, so as to be 100% vested on September 15, 2027, subject to continued service with the Company.

	By: /s/Michael Morehead, Attorney-in-Fact, For: Christopher Paisley	09/10/2026
	** 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)