Canadian Solar (CSIQ) COO records RSU exercise and tax share withholding

Rhea-AI Filing Summary

Canadian Solar Inc. Chief Operating Officer Marx Dylan reported routine equity compensation activity. On May 21, 2026, he exercised restricted share units representing 1,527 shares of common stock and, in a separate transaction, 903 shares were withheld to cover tax obligations.

Following these transactions, Dylan held 3,750 shares of Canadian Solar common stock directly. The filing shows compensation-related derivative exercises and associated tax-withholding, with no open‑market purchases or sales.

Insider Trade Summary

1,527 shares exercised/converted

Mixed 3 txns

Insider Marx Dylan

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Share Units	1,527	$0.00	--
Exercise	Common Stock	1,527	$0.00	--
Tax Withholding	Common Stock	903	$16.3434	$15K

Holdings After Transaction: Restricted Share Units — 13,500 shares (Direct, null); Common Stock — 3,750 shares (Direct, null)

Footnotes (1)

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Key Figures

Tax-withholding shares: 903 shares RSUs exercised: 1,527 shares COO holdings after transactions: 3,750 shares +3 more

6 metrics

Tax-withholding shares 903 shares Shares delivered to satisfy tax liability at $16.3434 per share

RSUs exercised 1,527 shares Restricted Share Units converted into common stock on May 21, 2026

COO holdings after transactions 3,750 shares Total Canadian Solar common shares directly held after Form 4 events

Tax-withholding reference price $16.3434 per share Value used for 903-share tax-withholding disposition of common stock

Derivative exercise count 1 transaction, 1,527 shares Exercise or conversion of derivative security reported in transaction summary

Tax-withholding count 1 transaction, 903 shares Tax-withholding disposition coded as F in transaction summary

Key Terms

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

5 terms

Restricted Share Units financial

"The filing records transactions in "Restricted Share Units" that convert into common stock."

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.

tax-withholding disposition financial

"One transaction is described as a "tax-withholding disposition" of 903 common shares."

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

"Two entries carry the description "Exercise or conversion of derivative security"."

derivative security financial

"The RSUs are treated as a "derivative security" that can be exercised into common stock."

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Form 4 regulatory

"Insider transactions by executives are reported to the SEC on Form 4."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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^*

Marx Dylan

(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 Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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	05/21/2026		M		1,527	A	$0.00	3,750	D
Common Stock	05/21/2026		F		903	D	$16.3434	2,847	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	05/21/2026		M			1,527	05/20/2026	(1)	Common Stock	1,527	$0.00	13,500	D

Explanation of Responses:

1. These RSUs have no expiration date.

	/s/ Dylan Marx	05/22/2026
	** 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 Marx Dylan?

Canadian Solar reported that Chief Operating Officer Marx Dylan exercised restricted share units into 1,527 common shares and had 903 shares withheld to cover taxes. These transactions are compensation-related and do not reflect open-market buying or selling of CSIQ stock.

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

The filing shows no open-market purchases or sales by Marx Dylan. Instead, it records an equity award vesting, where restricted share units converted into common stock and some shares were withheld for taxes, a common mechanism for settling equity-based compensation.

How many Canadian Solar (CSIQ) shares does Marx Dylan hold after these transactions?

After the reported transactions, Marx Dylan directly holds 3,750 shares of Canadian Solar common stock. This figure comes from the Form 4 totals following the RSU conversion and the separate tax-withholding disposition of 903 shares related to the equity compensation event.

What is the purpose of the 903 Canadian Solar (CSIQ) shares disposed by Marx Dylan?

The 903 shares were disposed of to satisfy tax liabilities associated with the equity award. This tax-withholding disposition is coded as an “F” transaction, meaning shares are delivered to cover exercise price or taxes, rather than sold in the open market.

What does the RSU exercise by Marx Dylan mean for Canadian Solar (CSIQ) investors?

The RSU exercise reflects routine compensation for Canadian Solar’s Chief Operating Officer. 1,527 restricted share units converted into common stock, while 903 shares were withheld for taxes. Such transactions are common for executives and generally do not signal a change in sentiment toward the stock.