Canadian Solar (CSIQ) CFO exercises 5,422 RSUs and withholds shares for tax

Rhea-AI Filing Summary

Canadian Solar Inc. Chief Financial Officer Zhu Xinbo reported routine equity compensation activity involving restricted share units. On May 13, 2026, he exercised 5,422 restricted share units into common stock, and 3 common shares were disposed of at $19.83 per share to cover tax obligations. Following these transactions, he directly holds 145,309 common shares and 28,866 restricted share units. The filing reflects compensation-related vesting and tax withholding rather than open-market buying or selling.

Insider Trade Summary

5,422 shares exercised/converted

Mixed 3 txns

Insider Zhu Xinbo

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Share Units	5,422	$0.00	--
Exercise	Common Stock	5,422	$0.00	--
Tax Withholding	Common Stock	3	$19.83	$59.49

Holdings After Transaction: Restricted Share Units — 28,866 shares (Direct, null); Common Stock — 145,312 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs exercised: 5,422 units Shares disposed for tax: 3 shares Tax disposition price: $19.83/share +3 more

6 metrics

RSUs exercised 5,422 units Restricted share units converted into common stock on May 13, 2026

Shares disposed for tax 3 shares Tax-withholding disposition at $19.83 per share on May 13, 2026

Tax disposition price $19.83/share Price for 3 common shares used to satisfy tax liability

Common shares after transactions 145,309 shares Direct common stock holdings following Form 4 transactions

RSUs remaining 28,866 units Restricted share units held after the 5,422-unit exercise

Transaction date May 13, 2026 Date of RSU exercise and tax-withholding disposition

Key Terms

Restricted Share Units, derivative exercise/conversion, tax-withholding disposition, Exercise or conversion of derivative security, +1 more

5 terms

Restricted Share Units financial

"security_title": "Restricted Share Units""

Restricted share units (RSUs) are a promise from a company to give an employee or service provider actual shares or cash equal to the shares after certain conditions are met, typically staying with the company for a set time or hitting performance targets. Think of them like a time-locked gift card that becomes usable only after you’ve earned it. For investors, RSUs matter because they align employee incentives with company performance and can increase the number of shares outstanding over time, diluting existing ownership and affecting earnings per share.

derivative exercise/conversion financial

"transaction_action": "derivative exercise/conversion""

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Exercise or conversion of derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

Payment of exercise price or tax liability by delivering securities financial

"transaction_code_description": "Payment of exercise price or tax liability by delivering securities""

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^*

Zhu Xinbo

(Last) (First) (Middle)

C/O CANADIAN SOLAR INC

4273 KING STREET EAST, SUITE 102

(Street)

KITCHENER N2P 2E9

(City) (State) (Zip)

ONTARIO, CANADA

(Country)

2. Issuer Name and Ticker or Trading Symbol
Canadian Solar Inc. [ CSIQ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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
Common Stock	05/13/2026		M		5,422	A	$0.00	145,312	D
Common Stock	05/13/2026		F		3	D	$19.83	145,309	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
Restricted Share Units	$0.00	05/13/2026		M			5,422	05/12/2026	(1)	Common Stock	5,422	$0.00	28,866	D

Explanation of Responses:

1. These RSUs have no expiration date.

	/s/ Xinbo Zhu	05/14/2026
	** 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)

FAQ

What insider transactions did Canadian Solar (CSIQ) report for Zhu Xinbo?

Canadian Solar CFO Zhu Xinbo exercised 5,422 restricted share units into common stock and had 3 shares withheld at $19.83 each for taxes. These are compensation-related events, not open-market trades, reflecting routine equity award vesting.

Did the Canadian Solar (CSIQ) CFO buy or sell shares on the open market?

The CFO did not conduct open-market buy or sell transactions. He exercised 5,422 restricted share units and 3 shares were disposed of at $19.83 solely to satisfy tax obligations tied to the vesting, a standard non-market mechanism.

How many Canadian Solar (CSIQ) shares does the CFO hold after this Form 4?

After these transactions, the CFO directly holds 145,309 common shares and 28,866 restricted share units. These holdings combine vested stock and remaining equity awards, giving him continued exposure to Canadian Solar’s equity performance through his compensation.

What is the significance of the 3 Canadian Solar (CSIQ) shares disposed at $19.83?

The 3 shares disposed at $19.83 per share were used to cover tax liabilities from the equity award exercise. This F-code transaction represents tax withholding, not a discretionary sale, and generally carries limited informational value about management’s view of the stock.

What do the exercised 5,422 restricted share units mean for Canadian Solar (CSIQ) investors?

The exercise of 5,422 restricted share units converted compensation awards into common shares for the CFO. It shows part of his equity package vesting as scheduled, aligning his interests with shareholders, but does not indicate a new market purchase or sale decision.