FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * GELFOND RICHARD L   2. Issuer Name and Ticker or Trading Symbol IMAX CORP [IMAX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) 110 EAST 59TH STREET, SUITE 2100 3. Date of Earliest Transaction (Month/Day/Year) 08/23/2010 (Street) NEW YORK, NY 10022 4. If Amendment, Date 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 (City) (State) (Zip) 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 shares 08/23/2010   S   10,000 (1) D $ 13.99 306,650 D   common shares 08/23/2010   M   30,000 (2) A $ 6.86 336,650 D   common shares 08/23/2010   D   30,000 (2) D $ 13.85 306,650 D   common shares 08/24/2010   S   10,000 (1) D $ 13.35 296,650 D   common shares 08/25/2010   S   10,000 (1) D $ 13.44 286,650 D   common shares               50,000 I by "Gelfond 2001 Children's Trust" common shares               25,050 I by "Pamela Gelfond Trust" common shares               25,050 I by "Claudia Gelfond Trust" common shares               128,750 I by "Richard Gelfond IRA"

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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 Underlying Securities (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 of Derivative Security: 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

stock appreciation rights

$ 6.86

08/23/2010

M

30,000 (2)

06/30/2008

12/31/2017

common shares

30,000 (2)

$ 0

530,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GELFOND RICHARD L 110 EAST 59TH STREET SUITE 2100 NEW YORK, NY 10022	X		Chief Executive Officer

Signatures

Richard L Gelfond		08/25/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Sale of common shares pursuant to Rule 10b5-1 Plan adopted on November 16, 2009. Mr. Gelfond's sales plan is scheduled to terminate on November 4, 2010.
(2)	Exercise of stock appreciation rights pursuant to Stock Appreciation Rights Automatic Exercise Plan adopted on November 16, 2009. Mr. Gelfond's SARs exercise plan is scheduled to terminate on November 17, 2010.

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