Ambarella director granted 3,151-share stock award

Ambarella granted director Gregory M. Bryant 3,151 RSUs that vest quarterly over one year, increasing his direct holdings to 5,608 Ordinary Shares.

Rhea-AI Filing Summary

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

Ambarella Inc. (AMBA) reported that director Gregory M. Bryant received an annual equity award in the form of 3,151 Ordinary Shares on September 8, 2026. The restricted stock unit grant vests in four equal installments every three months from September 15, 2026, becoming fully vested on September 15, 2027, subject to his continued service. Following this award, he holds 5,608 Ordinary Shares directly.

Insider Trade Summary

Grant/Award: 3,151 shares

Grant/Award 1 txn

Insider Bryant Gregory M

Role Director

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

Holdings After Transaction: Ordinary Shares — 5,608 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 Holdings after transaction: 5,608 Ordinary Shares Vesting completion date: September 15, 2027 +1 more

4 metrics

RSU grant size 3,151 Ordinary Shares Annual restricted stock unit grant to Gregory M. Bryant effective September 8, 2026

Holdings after transaction 5,608 Ordinary Shares Direct ownership by Gregory M. Bryant following the RSU grant

Vesting completion date September 15, 2027 Date when the 3,151-share RSU award is scheduled to be 100% vested

Vesting start date September 15, 2026 Vesting begins with one-fourth of the RSUs vesting every three months

Key Terms

restricted stock unit, independent director, vesting start date, 100% vested

4 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

"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

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

100% vested financial

"so as to be 100% vested on September 15, 2027"

FAQ

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

What insider transaction did Ambarella (AMBA) report for Gregory M. Bryant?

Ambarella reported that director Gregory M. Bryant received a grant of 3,151 Ordinary Shares as an annual restricted stock unit award on September 8, 2026. This was a compensation-related acquisition, not an open-market purchase or sale.

How many Ambarella (AMBA) shares does Gregory M. Bryant hold after this grant?

After the award, Gregory M. Bryant holds 5,608 Ordinary Shares of Ambarella directly. This reflects his prior holdings plus the newly granted 3,151-share restricted stock unit award reported in the filing.

What is the vesting schedule for Gregory M. Bryant’s 3,151 Ambarella (AMBA) RSUs?

The 3,151-share RSU grant vests as to one-fourth of the Ordinary Shares every three months starting from the vesting start date of September 15, 2026, and will be 100% vested on September 15, 2027, subject to continued service with Ambarella.

Was Gregory M. Bryant’s Ambarella (AMBA) equity award made under a Rule 10b5-1 plan?

No. The filing indicates that the Rule 10b5-1 checkbox is not marked, and the footnote describes the award as an annual restricted stock unit grant approved by the Board of Directors, not as part of a Rule 10b5-1 trading plan.

Is this Ambarella (AMBA) Form 4 transaction a market buy or sell?

No. The Form 4 shows a grant or award acquisition of 3,151 Ordinary Shares at a reported price of $0.00 per share, reflecting an equity compensation grant to an independent director rather than a market purchase or sale.

How does Ambarella (AMBA) describe this equity award for independent directors?

Ambarella’s Board approved an annual restricted stock unit grant of 3,151 Ordinary Shares to each independent director, effective as of September 8, 2026, with vesting in four quarterly installments over one year, subject to continued service with the company.

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

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Available on EDGAR 09/10/2026 - 04:49 PM Accepted by SEC EDGAR 09/10/2026 - 04:49 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^*

Bryant Gregory M

(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	5,608	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: Gregory M. Bryant	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)