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* ONTARIO TEACHERS PENSION PLAN BOARD (Last) (First) (Middle) 5650 YONGE STREET 3RD FLOOR (Street) TORONTO A6 M2M 4H5 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol AZEK Co Inc. [ AZEK ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/16/2023
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person 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
Class A Common Stock, par value $0.001 per share	05/16/2023	05/16/2023	S		7,000,000	D	$24.36	7,325,990(1)(2)	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

Explanation of Responses:

1. Disposition pursuant to an underwriting agreement, dated May 16, 2023 (the "Underwriting Agreement"), and in connection with the registered public offering of shares of Common Stock pursuant to the final prospectus dated May 16, 2023 and filed with the U.S. Securities and Exchange Commission on May 18, 2023 pursuant to Rule 424(b)(7) under the Securities Act of 1933, as amended, which offering was consummated on May 16, 2023 (the "Offering"). In connection with the Offering, Ontario Teachers' Pension Plan Board ("OTPP") sold 7,000,000 shares of Class A Common Stock and also granted the underwriter an option to purchase an additional 1,050,000 shares of Class A Common Stock (the "Option") at the price listed in Table I above, which Option is exercisable for 30 days from the date of Underwriting Agreement. OTPP will report any further sales pursuant to the Option on Form 4.

2. The reported securities are owned by OTPP. Mr. Ashfaq Qadri may be deemed to have power to dispose of or convert the shares held by OTPP because of a delegation of authority from the Board of Directors of OTPP; however, approval of disposition decisions is made by senior personnel within the capital markets group of OTPP in accordance with internal portfolio guidelines. Voting decisions are made by personnel within the public equities group of OTPP in accordance with internal proxy voting guidelines. As such, Nr. Qadri expressly disclaims beneficial ownership of such shares.

Remarks:

For as long as OTPP held at least 5% of the total outstanding shares of the Issuer, OTPP had the right to nominate directors for election to the board of directors of the Issuer pursuant to a stockholders agreement, dated June 11, 2020, by and among the Issuer, Ares Corporate Opportunities Fund IV, L.P. ("ACOF IV") and OTPP. OTPP and ACOF IV had previously jointly nominated one director to the Issuer's board of directors, and OTPP has nominated one director. As a result of the Offering, OTPP will no longer hold more than 5% of the outstanding shares of Class A Common Stock and will therefore no longer be entitled to nominate directors of the Board. OTPP's current director nominee will continue in its position until its successor is duly elected. Accordingly, OTPP may be deemed to be a director by deputization until such time.

	/s/ Jonathan Law, Managing Director, Corporate & Investments Compliance	05/18/2023
	** Signature of Reporting Person	Date
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