Ownership Submission
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, 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 *
  Pitts Keith
 2. Date of Event Requiring Statement (Month/Day/Year)
08/01/2013		 3. Issuer Name and Ticker or Trading Symbol
MARRONE BIO INNOVATIONS INC [MBII]
(Last)
(First)
(Middle)
C/O MARRONE BIO INNOVATIONS, INC., 2121 SECOND STREET, SUITE A-107		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
See Remarks
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

DAVIS, CA 95618		 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)
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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) 07/21/2018 Common Stock 15,931 $ 0.47 D  
Stock Option (Right to Buy)   (2) 01/28/2019 Common Stock 4,779 $ 1.19 D  
Stock Option (Right to Buy)   (3) 01/11/2020 Common Stock 4,779 $ 1.19 D  
Stock Option (Right to Buy)   (4) 01/11/2020 Common Stock 4,779 $ 1.19 D  
Stock Option (Right to Buy)   (5) 01/24/2021 Common Stock 17,620 $ 1.19 D  
Stock Option (Right to Buy)   (6) 12/15/2021 Common Stock 15,931 $ 1.41 D  
Stock Option (Right to Buy)   (7) 02/20/2022 Common Stock 11,487 $ 3.11 D  
Stock Option (Right to Buy)   (8) 10/18/2022 Common Stock 23,897 $ 12.08 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Pitts Keith
C/O MARRONE BIO INNOVATIONS, INC.
2121 SECOND STREET, SUITE A-107
DAVIS, CA 95618		       See Remarks  

Signatures

/s/ Donald J. Glidewell, Donald J. Glidewell, Attorney-in-Fact 08/01/2013
**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) The option vested with respect to 1/4th of the total shares subject to the option on the first anniversary of the vesting commencement date of July 1, 2008, and 1/48th of the total shares subject to the option monthly thereafter for 36 months.
(2) The option vested with respect to 1/4th of the total shares subject to the option on the first anniversary of the vesting commencement date of January 1, 2009, and 1/48th of the total shares subject to the option monthly thereafter for 36 months.
(3) The option vested with respect to 1/4th of the total shares subject to the option on the first anniversary of the vesting commencement date of January 1, 2010, and 1/48th of the total shares subject to the option monthly thereafter for 36 months.
(4) The option vested with respect to 100% of the total shares subject to the option on the vesting commencement date of January 1, 2010.
(5) The option vested with respect to 100% of the total shares subject to the option on the vesting commencement date of January 1, 2011.
(6) The options vest with respect to 1/60th of the total shares subject to the option one month after the vesting commencement date of November 1, 2011, and 1/60th of the total shares subject to the option monthly thereafter for 36 months.
(7) The option vested with respect to 100% of the total shares subject to the option on the vesting commencement date of February 20, 2012.
(8) The option vested with respect to 1/4th of the total shares subject to the option on the first anniversary of the vesting commencement date of October 18, 2012, and 1/48th of the total shares subject to the option monthly thereafter for 36 months.
 
Remarks:
Vice President of Regulatory and Governmental Affairs

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