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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - Q ( Mark One ) ☑ Quarterly report pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the quarterly period ended September 30 , 2021 Or ☐ Transition report pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number : 001-36030 Marrone Bio Innovations , Inc. ( Exact name of registrant as specified in its charter ) 20-5137161 ( I.R.S. Employer Identification No. ) Delaware ( State or other jurisdiction of incorporation or organization ) 1540 Drew Avenue , Davis , CA 95618 ( Address of principal executive offices and zip code ) ( 530 ) 750-2800 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Trading Symbol ( s ) Common Stock , $ 0.00001 par value MBII Name of each exchange on which registered Nasdaq Capital Market Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes > No □ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No □ Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company or an Emerging Growth Company . See the definitions of “ large accelerated filer , " " accelerated filer ” , “ smaller reporting company " and " Emerging Growth Company " in Rule 12b - 2 of the Exchange Act . ( Check one ) : Large accelerated filer Non - accelerated filer Emerging growth Company ☐ ☐ ☐ ☐ Accelerated filer Smaller reporting company ☑