Sec Form 4 Filing - KERCKHOVE GEORGE H @ MARRONE BIO INNOVATIONS INC - 2020-04-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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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1. Name and Address of Reporting Person KERCKHOVE GEORGE H 2. Issuer Name and Ticker or Trading Symbol MARRONE BIO INNOVATIONS INC [ MBII] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O MARRONE BIO INNOVATIONS, INC., 1540 DREW AVENUE 3. Date of Earliest Transaction (MM/DD/YY) 04/01/2020 (Street) DAVIS, CA95618 4. If Amendment, Date Original Filed (MM/DD/YY) 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 Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 04/01/2020 M 17,895 A 20,895 D Common Stock 04/01/2020 M 36,850 A 57,745 D Common Stock 04/01/2020 M 21,301 A 79,046 D Common Stock 04/01/2020 M 11,312 A 90,358 D Common Stock 04/01/2020 M 13,927 A 104,285 D Common Stock 04/01/2020 M 11,313 A 115,598 D Common Stock 04/01/2020 M 11,312 A 126,910 D Common Stock 04/01/2020 M 13,056 A 139,966 D Common Stock 04/01/2020 M 12,375 A 152,341 D Common Stock 04/01/2020 M 12,375 A 164,716 D Common Stock 04/01/2020 M 12,375 A 177,091 D Common Stock 04/01/2020 M 12,375 A 189,466 D Common Stock 04/01/2020 M 12,375 A 201,841 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units ( 14 ) 04/01/2020 M 17,895 ( 1 ) ( 1 ) Common Stock 17,895 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 36,850 ( 2 ) ( 2 ) Common Stock 36,850 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 21,301 ( 3 ) ( 3 ) Common Stock 21,301 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 11,312 ( 4 ) ( 4 ) Common Stock 11,312 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 13,927 ( 5 ) ( 5 ) Common Stock 13,927 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 11,313 ( 6 ) ( 6 ) Common Stock 11,313 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 11,312 ( 7 ) ( 7 ) Common Stock 11,312 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 13,056 ( 8 ) ( 8 ) Common Stock 13,056 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 12,375 ( 9 ) ( 9 ) Common Stock 12,375 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 12,375 ( 10 ) ( 10 ) Common Stock 12,375 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 12,375 ( 11 ) ( 11 ) Common Stock 12,375 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 12,375 ( 12 ) ( 12 ) Common Stock 12,375 ( 15 ) 0 D Restricted Stock Units ( 14 ) 04/01/2020 M 12,375 ( 13 ) ( 13 ) Common Stock 12,375 ( 15 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other KERCKHOVE GEORGE H C/O MARRONE BIO INNOVATIONS, INC. 1540 DREW AVENUE DAVIS, CA95618 X Signatures /s/ Linda V. Moore, as attorney in fact 04/03/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 17, 2015, the reporting person was granted 17,895 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 2 )On May 25, 2016, the reporting person was granted 36,850 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 3 )On January 30, 2018, the reporting person was granted 21,301 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 4 )On March 31, 2018, the reporting person was granted 11,312 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 5 )On May 30, 2018, the reporting person was granted 13,927 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 6 )On June 30, 2018, the reporting person was granted 11,313 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 7 )On September 30, 2018, the reporting person was granted 11,312 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 8 )On December 31, 2018, the reporting person was granted 13,056 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 9 )On March 31, 2019, the reporting person was granted 12,375 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 10 )On June 30, 2019, the reporting person was granted 12,375 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 11 )On September 30, 2019, the reporting person was granted 12,375 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 12 )On December 31, 2019, the reporting person was granted 12,375 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 13 )On March 31, 2020, the reporting person was granted 12,375 restricted stock units. Due to the retirement of the reporting person from the Board of Directors on April 1, 2020, vested shares were delivered to the reporting person upon the reporting person's separation of service with the Company. ( 14 )Convertible into shares of common stock on a 1-for-1 basis. ( 15 )Previously granted to the reporting person for his service on the board of directors.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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