# EDGAR Filing Document

**Accession Number:** 0001375877
**File Stem:** 0001104659-26-030387
**Filing Date:** 2026-3
**Character Count:** 5175
**Document Hash:** 43b848dc72530d84f58ac9a51fbc7c12
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-030387.hdr.sgml**: 20260415

**ACCESSION NUMBER**: 0001104659-26-030387

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260318

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Wong Andrew Luen Cheung
- **CENTRAL INDEX KEY:** 0001979240

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-33107
- **FILM NUMBER:** 26767230

**MAIL ADDRESS:**
- **STREET 1:** C/O CANADIAN SOLAR INC.
- **STREET 2:** 545 SPEEDVALE AVENUE WEST
- **CITY:** GUELPH
- **STATE:** A6
- **ZIP:** N1K 1E6
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Canadian Solar Inc.
- **CENTRAL INDEX KEY:** 0001375877
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A6
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 4273 KING STREET EAST, SUITE 102
- **CITY:** KITCHENER
- **STATE:** A6
- **ZIP:** N2P 2E9
- **BUSINESS PHONE:** 519-837-1881

**MAIL ADDRESS:**
- **STREET 1:** 66 WELLINGTON STREET WEST
- **STREET 2:** SUITE 4100
- **CITY:** TORONTO
- **STATE:** A6
- **ZIP:** M5K 1B7

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Wong Andrew Luen Cheung<br><sub>(Last) (First) (Middle)</sub><br>C/O CANADIAN SOLAR INC.<br>4273 KING STREET EAST, SUITE 102<br><sub>(Street)</sub><br>KITCHENER,  N2P 2E9<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Canadian Solar Inc. [ CSIQ ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-03-18 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<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 Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Share | 986 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Restricted Share Unit | <sup>(1)</sup> | <sup>(1)</sup> | Common Share | 21538 | <sup>(2)</sup> | D |  |

---

### Footnotes:

(1) Includes (i) 770 unvested RSUs, which will vest on April 1, 2026; (ii) 809 unvested RSUs, which will vest on July 1, 2026; (iii) 1,203 unvested RSUs, which will vest on October 1, 2026, (iv) 1,157 unvested RSUs, which will vest on January 1, 2027; (v) 1,602 unvested RSUs, which will vest on April 1, 2027; (vi) 1,953 unvested RSUs, which will vest on July 1, 2027; (vii) 1,955 unvested RSUs, which will vest on October 1, 2027; (viii) 2,629 unvested RSUs, which will vest on January 1, 2028; (ix) 3,180 unvested RSUs, which will vest on April 1, 2028; (x) 2,731 unvested RSUs, which will vest on July 1, 2028; (xi) 2,303 unvested RSUs, which will vest on October 1, 2028; and (xii) 1,246 unvested RSUs, which will vest on January 1, 2029.

(2) Each RSU represents a contingent right to receive one share of the Issuer's Common Share upon vesting.

**Signature:** /s/ Andrew (Luen Cheung) Wong  
**Date:** 2026-03-18

### 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.**