Canadian Solar CTO updates 7,512 stock options

Canadian Solar Inc. director and Chief Technology Officer Shawn Xiaohua Qu reported a Form 4 showing an administrative change to an existing stock option award held indirectly through his spouse.

Rhea-AI Filing Summary

Canadian Solar Inc. director and Chief Technology Officer Shawn Xiaohua Qu reported a Form 4 showing an administrative change to an existing stock option award held indirectly through his spouse. The filing covers 7,512 stock options to acquire Common Stock at an exercise price of $9.328 per share.

The footnotes explain that these 7,512 options vested in four equal installments of 1,878 options on May 20, 2012, 2013, 2014 and 2015. The key change is that the option expiration date was extended from May 20, 2026 to May 20, 2027, with no other changes to the grant. After this restructuring-type transaction, 7,512 options remain outstanding under this award.

Insider Trade Summary

Other: 7,512 shares

Other 1 txn

Insider Qu Shawn Xiaohua

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Other	Stock Options (Right to Buy)	7,512	$0.00	$0.00

Holdings After Transaction: Stock Options (Right to Buy) — 7,512 contracts (Indirect, By Spouse)

Footnotes (2)

1. F1. Includes 7,512 stock options, of which 1,878, 1,878, 1,878 and 1,878 became fully vested and exercisable on May 20, 2012, 2013, 2014 and 2015, respectively.
2. F2. Option expiration date extended from May 20, 2026 to May 20, 2027. No other changes were made to the grant.

Key Figures

Options affected: 7,512 options Exercise price: $9.328 per share Vesting tranche size: 1,878 options +2 more

5 metrics

Options affected 7,512 options Stock options linked to Canadian Solar common stock

Exercise price $9.328 per share Exercise price for the 7,512 stock options

Vesting tranche size 1,878 options Each tranche vested on May 20, 2012-2015

New expiration date May 20, 2027 Extended option expiration date

Prior expiration date May 20, 2026 Original option expiration date before extension

Key Terms

Stock Options (Right to Buy), Other acquisition or disposition, By Spouse, Option expiration date extended

4 terms

Stock Options (Right to Buy) financial

"security_title: Stock Options (Right to Buy)"

Other acquisition or disposition financial

"transaction_code_description: Other acquisition or disposition"

By Spouse financial

"nature_of_ownership: By Spouse"

Option expiration date extended financial

"Option expiration date extended from May 20, 2026 to May 20, 2027."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Canadian Solar (CSIQ) report in this Form 4?

Canadian Solar reported an administrative change to a stock option grant held indirectly by CTO Shawn Xiaohua Qu’s spouse. The filing reflects a restructuring-type transaction affecting 7,512 stock options, rather than an open-market purchase or sale of common shares.

How many Canadian Solar (CSIQ) stock options are covered in this filing?

The Form 4 covers 7,512 stock options linked to Canadian Solar common stock. These options vested in four equal tranches of 1,878 each on May 20, 2012, 2013, 2014 and 2015, and remain outstanding following the reported restructuring transaction.

What changed about the Canadian Solar (CSIQ) options’ expiration date in this Form 4?

The option expiration date was extended by one year, from May 20, 2026 to May 20, 2027. Footnotes state that no other terms of the 7,512-option grant were changed, so exercise price and prior vesting remain the same.

Who holds the Canadian Solar (CSIQ) options referenced in this insider report?

The 7,512 stock options are reported as held indirectly by the spouse of CTO and director Shawn Xiaohua Qu. The nature of ownership is listed as “By Spouse,” indicating indirect beneficial ownership rather than direct personal holding.

What is the exercise price of the Canadian Solar (CSIQ) options in this filing?

The options carry an exercise price of $9.328 per share for Canadian Solar common stock. All 7,512 options under this grant share that price, and they became fully vested across four annual installments between May 2012 and May 2015.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/27/2026 - 09:50 PM EDT Learn about SEC filing dates

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^*

Qu Shawn Xiaohua

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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

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
Stock Options (Right to Buy)	$9.328	05/06/2026		J		7,512		(1)	05/20/2027(2)	Common Stock	7,512	$0	7,512	I	By Spouse

Explanation of Responses:

1. Includes 7,512 stock options, of which 1,878, 1,878, 1,878 and 1,878 became fully vested and exercisable on May 20, 2012, 2013, 2014 and 2015, respectively.

2. Option expiration date extended from May 20, 2026 to May 20, 2027. No other changes were made to the grant.

Remarks:

This Form 4 is being filed late due to inadvertent administrative error.

	/s/ Shawn (Xiaohua) Qu	05/27/2026
	** 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)