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).

1. Name and Address of Reporting Person* ARDSLEY ADVISORY PARTNERS LP (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol SunOpta Inc. [ STKL ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)
	3. Date of Earliest Transaction (Month/Day/Year) 08/18/2020
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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	08/18/2020		S(3)		2,300,000	D	$6	9,692,655	I	See Footnotes(1)(2)(3)
Common Stock	08/18/2020		S(3)		1,000,000	D	$6	8,692,655	I	See Footnotes(1)(2)(3)

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

1. Name and Address of Reporting Person* ARDSLEY ADVISORY PARTNERS LP (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* Ardsley Advisory Partners GP LLC (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* Ardsley Partners I GP LLC (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* HEMPLEMAN PHILIP J (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* Ardsley Partners Renewable Energy Fund, L.P. (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* Ardsley Healthcare Fund, L.P. (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* Ardsley Duckdive Fund, L.P. (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

1. Name and Address of Reporting Person* Ardsley Ridgecrest Partners Fund, L.P. (Last) (First) (Middle) 262 HARBOR DRIVE, 4TH FLOOR (Street) STAMFORD CT 06902 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director 10% Owner Officer (give title below) X Other (specify below) See Footnotes(1)(2)

Explanation of Responses:

1. This Form 4 is being filed by Ardsley Advisory Partners LP (the "Advisor") on behalf of itself and Ardsley Advisory Partners GP LLC (the "Advisor General Partner"), Ardsley Partners I GP LLC (the "General Partner"), Ardsley Partners Renewable Energy Fund, L.P. (the "Renewable Energy Fund"), Ardsley Healthcare Fund, L.P. (the "Healthcare Fund"), Ardsley Duckdive Fund, L.P. (the "Duckdive Fund"), Ardsley Ridgecrest Partners Fund, LP (the "Ridgecrest Fund") and Philip J. Hempleman ("Hempleman" and, together with the Advisor, the Advisor General Partner, the General Partner, the Renewable Energy Fund, the Healthcare Fund, the Duckdive Fund, and the Ridgecrest Fund, the "Reporting Persons").

2. (Continued from Footnote 1) The Advisor General Partner serves as general partner to the Advisor. The General Partner serves as general partner to the Renewable Energy Fund, the Healthcare Fund, the Duckdive Fund, and the Ridgecrest Fund. Hempleman serves as managing member to the Advisor, the Advisor General Partner, and the General Partner.

3. The amounts set forth in Table I reflect the 2,300,000 and 1,000,000 shares of Common Stock sold by the Renewable Energy Fund and the Duckdive Fund, respectively, in the open market transactions requiring the filing of this statement. In accordance with Instruction 4(b)(iv) of Form 4, the entire amount of the Issuer's securities held by the Reporting Persons is reported herein. Each of the Advisor, the Advisor General Partner, the General Partner, and Hempleman disclaims, for purposes of Section 16 of the Securities Exchange Act of 1934, beneficial ownership of such securities, except to the extent of his/its indirect pecuniary interest therein, and this report shall not be deemed an admission that either the Advisor, the Advisor General Partner, the General Partner, or Hempleman are the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

	/s/ Steve Napoli, Partner	08/19/2020
	** 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).
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