Form: 3

Initial statement of beneficial ownership of securities

April 21, 2010

Documents

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
OMB APPROVAL
OMB Number: 3235-0104
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  Sheehy Douglas T.
 2. Date of Event Requiring Statement (Month/Day/Year)
04/21/2010		 3. Issuer Name and Ticker or Trading Symbol
CODEXIS INC [CDXS]
(Last)
(First)
(Middle)
C/O CODEXIS, INC., 200 PENOBSCOT DRIVE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP, Gen Counsel and Sec.
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

REDWOOD CITY, CA 94063		 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 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)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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.

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 of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   (1) 04/19/2017 Common Stock 100,000 (2) $ 2.45 (2) D  
Stock Option (right to buy)   (3) 08/28/2017 Common Stock 22,000 (2) $ 6.71 (2) D  
Stock Option (right to buy)   (4) 10/25/2017 Common Stock 37,333 (2) $ 6.86 (2) D  
Stock Option (right to buy)   (5) 06/02/2019 Common Stock 33,333 (2) $ 7.46 (2) D  
Stock Option (right to buy)   (6) 11/09/2019 Common Stock 40,666 (2) $ 9.09 (2) D  
Stock Option (right to buy)   (7) 02/11/2020 Common Stock 33,333 (2) $ 10.92 (2) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Sheehy Douglas T.
C/O CODEXIS, INC.
200 PENOBSCOT DRIVE
REDWOOD CITY, CA 94063		       SVP, Gen Counsel and Sec.  

Signatures

/s/ Douglas T. Sheehy 04/21/2010
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Option vests with respect to 25% of the shares subject thereto on April 2, 2008, with 1/48th of the shares vesting monthly thereafter, such that the option will be fully vested and exercisable on April 2, 2011.
(2) Reflects a 2-for-3 reverse stock split of the Issuer's outstanding securities effected immediately prior to the effectiveness of the Issuer's S-1 Registration Statement (Commission File No. 333-164044).
(3) Option vests with respect to 25% of the shares subject thereto on August 28, 2008, with 1/48th of the shares vesting monthly thereafter, such that the option will be fully vested and exercisable on August 28, 2011.
(4) Option vests with respect to 25% of the shares subject thereto on October 25, 2008, with 1/48th of the shares vesting monthly thereafter, such that the option will be fully vested and exercisable on October 25, 2011.
(5) Option vests with respect to 1/24th of the shares subject thereto monthly commencing on January 1, 2011, such that the option will be fully vested and exercisable on January 1, 2013.
(6) Option vests with respect to 25% of the shares subject thereto on November 9, 2010, with 1/48th of the shares vesting monthly thereafter, such that the option will be fully vested and exercisable on November 9, 2013.
(7) Option vests with respect to 100% of the shares subject thereto on January 1, 2015. Upon the completion of the Issuer's initial public offering, the option will vest with respect to 25% of the shares subject thereto on January 1, 2011, with 1/48th of the shares vesting monthly thereafter, such that the option will be fully vested and exercisable on January 1, 2014.

Note: File three copies of this Form, one of which must be manually signed. If space 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.