# EDGAR Filing Document

**Accession Number:** 0001558685
**File Stem:** 0001280263-23-000022
**Filing Date:** 2023-3
**Character Count:** 7447
**Document Hash:** 08276d1cfb9941e59ac95f2f201c3318
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001280263-23-000022.hdr.sgml**: 20230317

**ACCESSION NUMBER**: 0001280263-23-000022

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230315

**FILED AS OF DATE**: 20230317

**DATE AS OF CHANGE**: 20230317

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Day Christopher
- **CENTRAL INDEX KEY:** 0001558685

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35667
- **FILM NUMBER:** 23744696

**MAIL ADDRESS:**
- **STREET 1:** 2975 SAN YSIDRO WAY
- **CITY:** SANTA CLARA
- **STATE:** CA
- **ZIP:** 95051
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMBARELLA INC
- **CENTRAL INDEX KEY:** 0001280263
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **IRS NUMBER:** 980459628
- **FISCAL YEAR END:** 0131

**BUSINESS ADDRESS:**
- **STREET 1:** 3101 JAY STREET
- **CITY:** SANTA CLARA
- **STATE:** CA
- **ZIP:** 95054
- **BUSINESS PHONE:** 408-734-8888

**MAIL ADDRESS:**
- **STREET 1:** 3101 JAY STREET
- **CITY:** SANTA CLARA
- **STATE:** CA
- **ZIP:** 95054

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Day Christopher<br><sub>(Last) (First) (Middle)</sub><br>3101 JAY STREET<br><sub>(Street)</sub><br>SANTA CLARA, CA 95054<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-03-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_VP, Marketing_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>AMBARELLA INC [ AMBA ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Ordinary Shares | 2023-03-15 |  | M |  | 6925 | A | <sup>(1)</sup> | 24212<sup>(2)</sup> | D |  |
| Ordinary Shares | 2023-03-17 |  | S |  | 2420<sup>(3)</sup> | D | $76.85 | 21792 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Performance Stock Units | <sup>(1)</sup> | 2023-03-15 |  | M |  |  | 8055 | <sup>(4)</sup> | <sup>(4)</sup> | Ordinary Shares | 8055 | $0.0 | 0 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2023-03-15 |  | M |  |  | 672 | <sup>(5)</sup> | 2023-03-15<sup>(5)</sup> | Ordinary Shares | 672 | $0.0 | 0 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2023-03-15 |  | M |  |  | 275 | <sup>(6)</sup> | 2024-03-15<sup>(6)</sup> | Ordinary Shares | 275 | $0.0 | 1101 | D |  |
| Restricted Stock Units | <sup>(1)</sup> | 2023-03-15 |  | M |  |  | 357 | <sup>(7)</sup> | 2025-03-15<sup>(7)</sup> | Ordinary Shares | 357 | $0.0 | 2862 | D |  |

---

### Footnotes:

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

(2) Includes 191 shares acquired under the Company's employee stock purchase plan on March 15, 2023.

(3) Shares sold to pay tax obligations resulting from the vesting of restricted stock units.

(4) On March 25, 2020, reporting person was granted a performance-based RSU award covering a target number of ordinary shares (the "Target RSU Number").  Pursuant to time-based vesting requirements, the award would vest in full on March 15, 2023, subject to continued service requirements through such date.  In addition, the number of shares subject to the award could be increased or decreased by up to 100% of the Target RSU Number, based on attainment of specified levels of the Company's total stockholder return over the period of February 1, 2020 through January 31, 2023 (the "TSR Period"). As a result of the Company's TSR performance over the TSR Period, the number of shares eligible to vest was 69.78% of the Target RSU Number.

(5) The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2020.

(6) The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2021.

(7) The restricted stock units vest at the rate of 1/12 per quarter commencing on March 15, 2022.

**Signature:** By: /s/ Michael Morehead, Attorney-in-Fact For: Christopher Day  
**Date:** 2023-03-17

### Remarks:

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.**