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 *
DOUGLAS KEVIN
   2. Issuer Name and Ticker or Trading Symbol
WESTPORT INNOVATIONS INC [WPRT] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
13(d)(3) group
(Last)
(First)
(Middle)
125 E. SIR FRANCIS DRAKE BLVD., STE 400		 3. Date of Earliest Transaction (Month/Day/Year)
04/25/2012
(Street)

LARKSPUR, CA 94939		 4. If Amendment, Date 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
(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 Stock 04/24/2012   X   100 A $ 38 3,068,315 I (2) (3) By James Douglas and Jean Douglas Irrecovable Descendants' Trust
Common Stock               2,530,353 D (1) (2)  
Common Stock               1,605,075 I (2) (4) By Douglas Family Trust
Common Stock               922,546 I (2) (5) By James E. Douglas III
Common Stock               601,839 I (2) (6) By KGD 2010 Annuity Trust V
Common Stock               601,839 I (2) (7) By MMD 2010 Annuity Trust V

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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
Put Option (obligation to buy) $ 38 04/24/2012   X     1 04/04/2012 05/19/2012 Common Stock 100 $ 0 329 I (2) (3) By James Douglas and Jean Douglas Irrevocable Descendants' Trust
Put Option (obligation to buy) $ 38             04/04/2012 05/19/2012 Common Stock 40,000   400 D (1) (2)  
Put Option (obligation to buy) $ 38             04/04/2012 05/19/2012 Common Stock 17,000   170 I (2) (4) By Douglas Family Trust
Put Option (obligation to buy) $ 38             04/04/2012 05/19/2012 Common Stock 10,000   100 I (2) (5) By James E. Douglas III
Put Option (obligation to buy) $ 30 04/25/2012   S     400 04/25/2012 06/16/2012 Common Stock 40,000 $ 247 440 D (1) (2)  
Put Option (obligation to buy) $ 30 04/25/2012   S     330 04/25/2012 06/16/2012 Common Stock 33,000 $ 247 330 I (2) (3) By James Douglas and Jean Douglas Irrevocable Descendants' Trust
Put Option (obligation to buy) $ 30 04/25/2012   S     170 04/25/2012 06/16/2012 Common Stock 17,000 $ 247 170 I (2) (4) By Douglas Family Trust
Put Option (obligation to buy) $ 30 04/25/2012   S     100 04/25/2012 06/16/2012 Common Stock 10,000 $ 247 100 I (2) (5) By James E Douglas III

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
DOUGLAS KEVIN
125 E. SIR FRANCIS DRAKE BLVD., STE 400
LARKSPUR, CA 94939		     X   13(d)(3) group
DOUGLAS FAMILY TRUST
125 E. SIR FRANCIS DRAKE BLVD., STE 400
LARKSPUR, CA 94939		     X   13(d)(3) group
JAMES & JEAN DOUGLAS IRREVOCABLE DESCENDANTS TRUST
125 E. SIR FRANCIS DRAKE BLVD., STE 400
LARKSPUR, CA 94939		     X   13(d)(3) group
DOUGLAS JAMES E III
125 E. SIR FRANCIS DRAKE BLVD., STE 400
LARKSPUR, CA 94939		     X   13(d)(3) group
KGD 2010 Annuity Trust V
125 E. SIR FRANCIS DRAKE BLVD., STE 400
LARKSPUR, CA 94939		     X   13(d)(3) group
MMD 2010 Annuity Trust V
125 E. SIR FRANCIS DRAKE BLVD., STE 400
LARKSPUR, CA 94939		     X   13(d)(3) group

Signatures

 /s/ Eileen Wheatman, attorney in fact for Kevin Douglas   04/27/2012
**Signature of Reporting Person Date
 /s/ Eileen Wheatman, attorney in fact for Douglas Family Trust   04/27/2012
**Signature of Reporting Person Date
 /s/ Eileen Wheatman, attorney in fact for James Douglas and Jean Douglas Irrevocable Descendants? Trust   04/27/2012
**Signature of Reporting Person Date
 /s/ Eileen Wheatman, attorney in fact for James E. Douglas III   04/27/2012
**Signature of Reporting Person Date
 /s/ Eileen Wheatman, attorney in fact for KGD 2010 Annuity Trust V   04/27/2012
**Signature of Reporting Person Date
 /s/ Eileen Wheatman, attorney in fact for MMD 2010 Annuity Trust V   04/27/2012
**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) These shares are held directly and jointly by Kevin Douglas and his wife, Michelle Douglas.
(2) Each of the reporting persons hereunder (individually, a "Reporting Person" and collectively the "Reporting Persons") may be deemed a member of a "group" within the meaning of Section 13(d)(3) of the Securities and Exchange Act of 1934, as amended (the "Exchange Act") or Rule 13d-5 promulgated under the Exchange Act, with one or more of the other Reporting Persons. Although the Reporting Persons are reporting such securities as if they were members of a "group", the filing of this Form 4 shall not be deemed an admission by any Reporting Person that such Reporting Person is a beneficial owner of any securities other than those directly held by such Reporting Person.
(3) These shares are held directly by the James Douglas and Jean Douglas Irrevocable Descendants' Trust and indirectly by Kevin Douglas. Kevin Douglas and Michelle Douglas, husband and wife, are each a co-trustee of the James Douglas and Jean Douglas Irrevocable Descendants' Trust.
(4) These shares are held directly by the Douglas Family Trust and indirectly by Kevin Douglas. James E. Douglas, Jr. and Jean A. Douglas, husband and wife, are each a co-trustee of the Douglas Family Trust.
(5) These shares are held directly by James E. Douglas III and indirectly by Kevin Douglas.
(6) These shares are held directly by the KGD 2010 Annuity Trust V, a grantor-retained annuity trust of which Kevin Douglas is the sole trustee, and indirectly by Kevin Douglas.
(7) These shares are held directly by the MMD 2010 Annuity Trust V, a grantor-retained annuity trust of which Michelle Douglas is the sole trustee, and indirectly by Michelle Douglas and Kevin Douglas.

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