SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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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. Date of Event Requiring Statement (Month/Day/Year) 11/14/2014	3. Issuer Name and Ticker or Trading Symbol MACERICH CO [ MAC ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	17,140,845(1)	I	See Note(2)
Common Stock, par value $0.01 per share	27,682	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

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) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* 1700480 ONTARIO INC (Last) (First) (Middle) 20 QUEEN STREET WEST, 5TH FLOOR (Street) TORONTO A6 M5H 3R4 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Prior to the Reporting Persons becoming subject to Section 16, Ontario Teachers' Pension Plan effected a short sale of 1,000 shares of Common Stock through a wholly-owned subsidiary of Ontario Teachers' Pension Plan that remained open until November 18, 2014 when the wholly-owned subsidiary closed out the short position.

2. 17,140,845 shares of Common Stock are owned directly by 1700480 Ontario Inc., which is a wholly owned subsidiary of Ontario Teachers' Pension Plan. Ontario Teachers' Pension Plan is an indirect beneficial owner of such reported securities.

Remarks:

	/s/ Sandra Hardy, Authorized Person on behalf of 1700480 Ontario Inc.	11/20/2014
	/s/ Rossana Di Lieto, Chief Compliance Officer on behalf of Ontario Teachers' Pension Plan	11/20/2014
	** 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 5 (b)(v).
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