Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
KEIGHLEY DAVID B
   2. Issuer Name and Ticker or Trading Symbol
IMAX CORP [IMAX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Senior VP, IMAX Corporation
(Last)
(First)
(Middle)
DKP 70MM, 3003 EXPOSITION BLVD		 3. Date of Earliest Transaction (Month/Day/Year)
10/04/2005
(Street)

SANTA MONICA, CA 90404		 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 10/04/2005   S   2,200 D $ 10.32 200 I by spouse
common shares 10/04/2005   S   2,200 D $ 10.32 200 D  
common shares 10/06/2005   C   25,000 A $ 3.04 25,200 D  
common shares 10/06/2005   C   10,000 A $ 7.45 35,200 D  
common shares 10/06/2005   C   1,500 A $ 5.59 36,700 D  
common shares 10/04/2005   S   36,500 D $ 10.2769 200 D  

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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 Options (to buy) $ 3.04 10/06/2005   C     25,000   (1) 04/16/2008 common shares 25,000 $ 3.04 0 D  
Stock Options (to buy) $ 7.45 10/06/2005   C     10,000   (2) 08/14/2010 common shares 10,000 $ 7.45 5,000 D  
Stock Options (to buy) $ 5.59 10/06/2005   C     1,500 06/24/2005 06/24/2011 common shares 1,500 $ 5.59 13,500 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
KEIGHLEY DAVID B
DKP 70MM
3003 EXPOSITION BLVD
SANTA MONICA, CA 90404		       Senior VP, IMAX Corporation  

Signatures

 /s/ David B. Keighley   10/06/2005
**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) The stock options become exercisable in two installments: 16,667 on April 16, 2004 and 8,333 on April 16, 2005.
(2) The stock options become exercisable in two installments: 5,000 on August 14, 2004 and 5,000 on August 14, 2005.

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