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 *
  Rominger Richard E
 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)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
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)
Common Stock 99,522
I
By Trust (1)

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)   (2) 08/14/2016 Common Stock 3,836 $ 0.078 D  
Stock Option (Right to Buy)   (3) 12/15/2021 Common Stock 12,745 $ 1.41 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Rominger Richard E
C/O MARRONE BIO INNOVATIONS, INC.
2121 SECOND STREET, SUITE A-107
DAVIS, CA 95618		   X      

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 Richard and Mary Rominger Community Trust
(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 August 15, 2007, and 1/48th of the total shares subject to the option monthly thereafter for 36 months.
(3) The options vested with respect to 50% of the total shares subject to the option on the vesting commencement date of December 15, 2011, and with respect to 1/120th of the total shares subject to the option one month after the vesting commencement date of November 1, 2011, and 1/120th of the total shares subject to the option monthly thereafter for 36 months.

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

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