Canadian Solar (CSIQ) director Qu exercises 18,779 options, holds 13.8M shares

Q: What did Canadian Solar (CSIQ) director Shawn Xiaohua Qu report in this Form 4?

Shawn Xiaohua Qu reported exercising 18,779 stock options for Canadian Solar common shares. The options had a $9.328 exercise price, and the transaction increased his directly held share count without any reported open-market sales in this filing.

Q: How many Canadian Solar (CSIQ) shares does Shawn Xiaohua Qu hold after this transaction?

After the option exercise, Shawn Xiaohua Qu directly held 13,771,441 common shares of Canadian Solar. The filing also shows his spouse indirectly holding 275,935 common shares , providing additional indirect exposure to the company’s stock.

Q: What stock options did Shawn Xiaohua Qu exercise for Canadian Solar (CSIQ)?

He exercised 18,779 stock options labeled as “Stock Options (Right to Buy)” with an exercise price of $9.328 per share. These options converted into an equal number of Canadian Solar common shares on April 1, 2026 .

Q: Are there remaining Canadian Solar (CSIQ) stock options associated with Shawn Xiaohua Qu?

Yes. The filing shows 7,512 stock options remaining, held indirectly through his spouse. These options also relate to Canadian Solar common stock, carry a $9.328 exercise price, and are scheduled to expire on May 20, 2026 .

Q: How are spouse holdings in Canadian Solar (CSIQ) reported for Shawn Xiaohua Qu?

The Form 4 lists certain holdings as indirect with the notation “By Spouse.” These include 275,935 common shares and 7,512 stock options , indicating additional exposure to Canadian Solar stock through a related account.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Canadian Solar Inc. director Shawn Xiaohua Qu exercised stock options to acquire additional shares. On April 1, 2026, Qu exercised 18,779 stock options at an exercise price of $9.328 per share, receiving the same number of common shares.

After this exercise, Qu directly owned 13,771,441 common shares. In addition, Qu’s spouse held 275,935 common shares and 7,512 stock options indirectly, with these remaining options also having a $9.328 exercise price and expiring on May 20, 2026. No open-market sales were reported in this filing.

Insider Trade Summary

18,779 shares exercised/converted

Mixed 4 txns

Insider Qu Shawn Xiaohua

Role Director

Type	Security	Shares	Price	Value
Exercise	Stock Options (Right to Buy)	18,779	$0.00	--
Exercise	Common Stock	18,779	$9.328	$175K
holding	Stock Options (Right to Buy)	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Options (Right to Buy) — 0 shares (Direct); Common Stock — 13,771,441 shares (Direct); Stock Options (Right to Buy) — 7,512 shares (Indirect, By Spouse); Common Stock — 275,935 shares (Indirect, By Spouse)

Footnotes (1)

Includes 18,779 stock options, of which 4,695, 4,694, 4,695 and 4,695 became fully vested and exercisable on May 20, 2012, 2013, 2014 and 2015, respectively. 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.

Key Figures

Options exercised: 18,779 options Exercise price: $9.328 per share Direct common shares after transaction: 13,771,441 shares +4 more

7 metrics

Options exercised 18,779 options Stock options exercised on April 1, 2026

Exercise price $9.328 per share Exercise price of stock options converted to common stock

Direct common shares after transaction 13,771,441 shares Direct holdings of common stock following the option exercise

Indirect common shares (spouse) 275,935 shares Common shares held indirectly by spouse

Remaining indirect options 7,512 options Unexercised stock options held indirectly by spouse

Remaining options exercise price $9.328 per share Exercise price of remaining indirect options

Options expiration date May 20, 2026 Expiration date for remaining indirect stock options

Key Terms

Stock Options (Right to Buy), derivative exercise/conversion, indirect ownership, By Spouse, +1 more

5 terms

Stock Options (Right to Buy) financial

"security_title: "Stock Options (Right to Buy)" associated with Canadian Solar common stock"

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion" describing the option exercise into common shares"

indirect ownership financial

"ownership_type: "indirect" with nature_of_ownership noted as "By Spouse""

By Spouse financial

"nature_of_ownership: "By Spouse" for certain common stock and option holdings"

Form 4 regulatory

"INSIDER FILING DATA (Form 4) reporting Canadian Solar insider transactions"

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 →

04/06/2026 - 07:47 PM

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	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	04/01/2026		M		18,779	A	$9.328	13,771,441	D
Common Stock								275,935	I	By Spouse

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Options (Right to Buy)	$9.328	04/01/2026		M			18,779	⁽¹⁾	05/20/2026	Common Stock	18,779	$0.00	0	D
Stock Options (Right to Buy)	$9.328							⁽²⁾	05/20/2026	Common Stock	7,512		7,512	I	By Spouse

Explanation of Responses:

1. Includes 18,779 stock options, of which 4,695, 4,694, 4,695 and 4,695 became fully vested and exercisable on May 20, 2012, 2013, 2014 and 2015, respectively.

2. 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.

Remarks:

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

	/s/ Shawn (Xiaohua) Qu	04/06/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Canadian Solar (CSIQ) director Shawn Xiaohua Qu report in this Form 4?

Shawn Xiaohua Qu reported exercising 18,779 stock options for Canadian Solar common shares. The options had a $9.328 exercise price, and the transaction increased his directly held share count without any reported open-market sales in this filing.

How many Canadian Solar (CSIQ) shares does Shawn Xiaohua Qu hold after this transaction?

After the option exercise, Shawn Xiaohua Qu directly held 13,771,441 common shares of Canadian Solar. The filing also shows his spouse indirectly holding 275,935 common shares, providing additional indirect exposure to the company’s stock.

What stock options did Shawn Xiaohua Qu exercise for Canadian Solar (CSIQ)?

He exercised 18,779 stock options labeled as “Stock Options (Right to Buy)” with an exercise price of $9.328 per share. These options converted into an equal number of Canadian Solar common shares on April 1, 2026.

Are there remaining Canadian Solar (CSIQ) stock options associated with Shawn Xiaohua Qu?

Yes. The filing shows 7,512 stock options remaining, held indirectly through his spouse. These options also relate to Canadian Solar common stock, carry a $9.328 exercise price, and are scheduled to expire on May 20, 2026.

Did Shawn Xiaohua Qu sell any Canadian Solar (CSIQ) shares in this Form 4?

No sales are reported in this Form 4. The transactions involve exercising stock options to acquire Canadian Solar common shares, increasing direct ownership, with no open-market sale codes such as “S” or tax-withholding dispositions disclosed.

How are spouse holdings in Canadian Solar (CSIQ) reported for Shawn Xiaohua Qu?

The Form 4 lists certain holdings as indirect with the notation “By Spouse.” These include 275,935 common shares and 7,512 stock options, indicating additional exposure to Canadian Solar stock through a related account.