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[Form 4] AMBARELLA INC Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Ambarella Inc. executive Ju Chi-Hong reported new equity awards. On March 2, 2026, he acquired 17,329 Performance Stock Units at a stated price of $0.00 per unit, increasing his derivative holdings of these awards to 17,329 units.

He also acquired 17,329 Ordinary Shares at $0.00 per share, bringing his directly held Ordinary Shares to 159,188. An additional 8,000 Ordinary Shares are held indirectly by a foundation. Footnotes state that one RSU award vests 1/12 per quarter starting March 15, 2026, while a performance-based RSU grant is scheduled to vest on March 15, 2029, with the final share count adjustable between 0% and 150% of a target number based on total shareholder return and revenue growth from February 1, 2026 through January 31, 2029.

Positive

  • None.

Negative

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Insider Ju Chi-Hong
Role Senior VP, Systems & GM, Asia
Type Security Shares Price Value
Grant/Award Performance Stock Units 17,329 $0.00 --
Grant/Award Ordinary Shares 17,329 $0.00 --
holding Ordinary Shares -- -- --
Holdings After Transaction: Performance Stock Units — 17,329 shares (Direct); Ordinary Shares — 159,188 shares (Direct); Ordinary Shares — 8,000 shares (Indirect, by Foundation)
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*
Ju Chi-Hong
(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)
Senior VP, Systems & GM, Asia
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 17,329(1) A $0.0 159,188 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
Performance Stock Units (2) 03/02/2026 A 17,329 (3) 03/15/2029(3) Ordinary Shares 17,329 $0.0 17,329 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: Chi-Hong Ju 03/04/2026
** 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.

Source: View Original Filing on SEC EDGAR