13G Filing: Ardsley Partners and Marrone Bio Innovations Inc (MBII)

UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE
13G/A

Under
the Securities Exchange Act of 1934

Marrone Bio
Innovations, Inc.

(Name of Issuer)

 

Common Stock

(Title of Class
of Securities)

 

57165B106

(CUSIP Number)

 

December
31, 2017

(Date of Event
Which Requires Filing of this Statement)

 

Check the appropriate box to designate
the rule pursuant to which this Schedule is filed:

 

x	Rule 13d-1(b)
x	Rule 13d-1(c)
o	Rule 13d-1(d)

 

*The remainder
of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject
class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior
cover page.

 

The information
required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the
Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall
be subject to all other provisions of the Act (however, see the Notes).  

 

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 control number.