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 *   STUART MILL VENTURE PARTNERS LP 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 STUART MILL PARTNERS LLC, 252 N. WASHINGTON STREET 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) FALLS CHURCH, VA 22046 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 1,133,367 D Â

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
Common Stock Warrant	  (1)	06/14/2023	Common Stock	(1)	$ (1)	D	Â
Convertible Promissory Note	  (2)	  (2)	Common Stock	$ 1,500,000 (2)	$ (2)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
STUART MILL VENTURE PARTNERS LP C/O STUART MILL PARTNERS LLC 252 N. WASHINGTON STREET FALLS CHURCH, VA 22046	Â	  X	Â	Â

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 warrant is exercisable upon completion of the Issuer's initial public offering for a number of shares equal to $75,000 divided by 70% of the price per share in the Issuer's initial public offering and at an exercise price per share equal to 70% of the price per share in the Issuer's initial public offering.
(2)	Lists original principal under the convertible promissory note as of March 15, 2012, the date of purchase. Upon completion of the Issuer's initial public offering, such principal, plus all accrued interest, will automatically convert into common stock at a price per share equal to 70% of the price per share in the Issuer's initial public offering

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