SEC FORM 3

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^*

Parrell Mark J.

(Last)

(First)

(Middle)

TWO NORTH RIVERSIDE PLAZA, SUITE 400

(Street)

CHICAGO

60606

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/02/2007

3. Issuer Name and Ticker or Trading Symbol
EQUITY RESIDENTIAL [ EQR ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Exec. VP & CFO

5. 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 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 Shares of Beneficial Interest	4,867.896⁽¹⁾	D
Common Shares of Beneficial Interest	2,949⁽²⁾	I	SERP Account

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Non-Qualified Stock Option (right to buy)	01/27/2007⁽³⁾	01/27/2014	Common Shares of Beneficial Interest	2,215	$29.25	D
Non-Qualified Stock Option (right to buy)	02/03/2007⁽⁴⁾	02/03/2015	Common Shares of Beneficial Interest	4,111	$31.76	D
Non-Qualified Stock Option (right to buy)	02/03/2007⁽⁵⁾	02/03/2016	Common Shares of Beneficial Interest	4,023	$42.8	D
Non-Qualified Stock Option (right to buy)	02/08/2008⁽⁶⁾	02/08/2017	Common Shares of Beneficial Interest	4,569	$53.5	D

Explanation of Responses:

1. Includes restricted shares of the Company scheduled to vest in the future.

2. Shares reported in this column are owned by the AST Trust Company, as Trustee of the Equity Residential Supplemental Executive Retirement Plan, for the benefit of the reporting person.

3. All of the share options reported on this line vest on January 27, 2007.

4. The share options reported on this line are scheduled to vest as follows: 2,055 of the share options vest on February 3, 2007; and 2,056 of the share options vest on February 3, 2008.

5. The share options reported on this line are scheduled to vest as follows: 1,341 of the share options vest on February 3, 2007; 1,341 of the share options vest on February 3, 2008; and 1,341 of the share options vest on February 3, 2009.

6. The share options reported on this line are scheduled to vest as follows: 1,523 of the share options vest on February 8, 2008; 1,523 of the share options vest on February 8, 2009; and 1,523 of the share options vest on February 8, 2010.

	By: Yasmina Duwe, Attorney-In-Fact	10/11/2007
	** 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).
** 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.