Edgar Filing: DEZWIREK PHILLIP

Ownership Submission

FORM 5

	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
	Form 3 Holdings Reported
	Form 4 Transactions Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
ANNUAL 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

OMB APPROVAL

OMB Number:

3235-0362

Expires:

January 31, 2005

Estimated average burden hours per response...

1.0

1. Name and Address of Reporting Person ^*

DEZWIREK PHILLIP

2. Issuer Name and Ticker or Trading Symbol
CECO ENVIRONMENTAL CORP [CECE]

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

__X__ Director	__X__ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
Chairman

(Last)

(First)

(Middle)

2300 YONGE STREET, SUITE 1710

3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2010

(Street)

TORONTO,Â A6Â M4P 1E4

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Reporting
(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 at end of Issuer's Fiscal Year (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/09/2009	Â	S4	113	D	$ 4.17 ⁽¹⁾	1,754,860	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	10/12/2009	Â	S4	926	D	$ 4.19 ⁽¹⁾	1,753,934	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	10/14/2009	Â	S4	5,786	D	$ 4.2 ⁽¹⁾	1,748,148	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	10/15/2009	Â	S4	5,000	D	$ 4.19 ⁽¹⁾ ⁽²⁾	1,743,148	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	10/19/2009	Â	S4	2,000	D	$ 4.23 ⁽¹⁾	1,741,148	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	10/20/2009	Â	S4	2,000	D	$ 4.23 ⁽¹⁾	1,739,148	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	10/22/2009	Â	S4	2,000	D	$ 4.05 ⁽¹⁾	1,737,148	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/04/2009	Â	P4	25,390	A	$ 3.3 ⁽³⁾	1,762,538	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/05/2009	Â	P4	4,800	A	$ 3.56 ⁽⁴⁾	1,767,338	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/06/2009	Â	P4	8,050	A	$ 3.52 ⁽⁵⁾	1,775,388	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/09/2009	Â	P4	8,000	A	$ 3.76 ⁽⁶⁾	1,783,388	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/16/2009	Â	P4	3,000	A	$ 3.8 ⁽⁷⁾	1,786,388	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/19/2009	Â	P4	5,000	A	$ 3.77 ⁽⁸⁾	1,791,388	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/20/2009	Â	P4	500	A	$ 3.88 ⁽⁹⁾	1,791,888	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/23/2009	Â	P4	3,500	A	$ 3.75	1,795,388	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/27/2009	Â	P4	969	A	$ 4.1	1,796,357	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	11/30/2009	Â	P4	1,500	A	$ 4.18 ⁽¹⁰⁾	1,797,857	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/03/2009	Â	P4	3,500	A	$ 4.1 ⁽¹¹⁾	1,801,357	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/04/2009	Â	P4	2,000	A	$ 4.09 ⁽¹²⁾	1,803,357	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/08/2009	Â	P4	1,429	A	$ 4.13 ⁽¹³⁾	1,804,786	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/09/2009	Â	S4	2,000	D	$ 4.2 ⁽¹⁾	1,802,786	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/11/2009	Â	P4	500	A	$ 4.14	1,803,286	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/15/2009	Â	P4	1,000	A	$ 4 ⁽¹⁴⁾	1,804,286	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/16/2009	Â	P4	4,000	A	$ 4.13 ⁽¹⁵⁾	1,808,286	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/17/2009	Â	P4	100	A	$ 4.1	1,808,386	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/18/2009	Â	P4	1,600	A	$ 4.04 ⁽¹⁶⁾	1,809,986	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/21/2009	Â	P4	2,000	A	$ 4.03 ⁽¹⁷⁾	1,811,986	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/22/2009	Â	P4	200	A	$ 4	1,812,186	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/23/2009	Â	P4	1,050	A	$ 3.99 ⁽¹⁸⁾	1,813,236	I	By Icarus Investment Corp. ⁽¹⁹⁾
Common Stock	12/28/2009	Â	P4	250	A	$ 3.95	1,813,486	I	By Icarus Investment Corp. ⁽¹⁹⁾

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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 control number.

SEC 2270 (9-02)

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 at End of Issuer's Fiscal Year
(Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
DEZWIREK PHILLIP 2300 YONGE STREET, SUITE 1710 TORONTO,Â A6Â M4P 1E4	Â X	Â X	Â Chairman	Â

Signatures

/s/ Phillip DeZwirek		05/31/2011
^**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)	In connection with this transaction, Icarus Investment Corp. has voluntarily remitted appropriate profits to CECO Environmental Corp., pursuant to Section 16(b) of the Securities Exchange Act of 1934.
(2)	The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.18 to $4.21, inclusive. The reporting person undertakes to provide to CECO Environmental Corp., any security holder of CECO Environmental Corp., or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in footnotes 2 through 18 in this Form 5.
(3)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.15 to $3.48, inclusive.
(4)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.45 to $3.64, inclusive.
(5)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.43 to $3.59, inclusive.
(6)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.73 to $4.05, inclusive.
(7)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.71 to $3.90, inclusive.
(8)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.76 to $3.77, inclusive.
(9)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.88 to $3.90, inclusive.
(10)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.10 to $4.25, inclusive.
(11)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.07 to $4.20, inclusive.
(12)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.08 to $4.09, inclusive.
(13)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.05 to $4.16, inclusive.
(14)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.99 to $4.00, inclusive.
(15)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.10 to $4.15, inclusive.
(16)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.01 to $4.05, inclusive.
(17)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.99 to $4.11, inclusive.
(18)	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.95 to $4.01, inclusive.
(19)	Filer is President of Icarus Investment Corp. and disclaims beneficial ownership of these securities except to the extent of his pecuniary interest, if any, therein.
Â Remarks: 4Â ofÂ 8.

Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.