April 12, 2018

Kevin Hammill

58 La Gonda Court

Danville, CA 94526

Dear Kevin,

I am pleased to offer you the full-time position of Chief Commercial Officer, with Marrone Bio Innovations, Inc. (the “Company”), reporting to Pam Marrone, CEO & Founder. Your actual start date will be determined upon successfully passing your drug test and background check. We anticipate your start date to be on or before April 30, 2018. However, Human Resources will notify you as to when you can actually start your employment with Marrone Bio Innovations.

You will receive a base salary of $320,000.00 on an annualized basis. Your per payroll rate, prior to withholding, is $12,307.70, which is based on twenty six (26) payrolls per calendar year. Direct deposit of paychecks to your bank account is available.

MBI will provide you with a company cell phone, laptop computer, and IPad. You will be eligible for a monthly auto allowance of $900.00 or $950.00 (which is based on the number of cylinders of the vehicle you will using for work) which is designed to cover all costs of owning and operating a vehicle.

Subject to the approval of our Board of Directors and/or Compensation Committee of the Board, you will be granted an option to purchase 400,000 shares of the Company’s common stock. The price per share of any approved option will be the closing price of our common stock as of the date on which the Compensation Committee approves the award. Your entitlement to any stock option that may be approved is, conditioned upon your signing of an Award Agreement and will be subject to its terms and the terms of our 2013 Stock Incentive Plan (as amended, the “Plan”). The option will vest over a period of four (4) years. One year from the date of grant of the option, 25% of the total shares will be vested. Such option will continue to vest over the remaining 3 years on a pro-rata basis equally each month over the period following the date of grant (2.083% per month over 36 months). The option shall continue to vest for so long as you provide “Continuous Service” to the Company or a “Related Entity” as those terms is defined in the Plan.

You will be eligible for the Company Bonus Plan, which changes from year to year, must be approved by the Board of Directors, and is based on Company and individual goals. The determination of the Company with respect to the amount of bonus earned, if any, will be final and binding. Your bonus can be up to 40% of your salary.

You will be eligible for the Company’s benefits programs on the first day of the first full month of your employment. The benefits currently offered are as follows:

You will be eligible to participate in the 401(k) Plan after completing one month of service. Subject to terms of the Plan, you will receive a Company match of $1 for $1 for the first 3% of your salary you contribute and $0.50 for the next 2% of your salary (i.e. the maximum match is 4% if you contribute 5% of your salary).

You will accrue 4.62 hours of vacation per pay period, which is equivalent to 120 hours on an annual basis.

All the benefit programs and plans are offered solely at the discretion of the Company and may be modified at any time. In addition to a timely response, this offer is contingent upon the successful completion of (1) reference check (2) a background check, which may include criminal and education credential checks and (3) a pre-employment drug test. The required background check form you will need to fill out will be provided to you under separate cover. For purposes of federal immigration laws, you are required to provide to the Company documentary evidence of your identity and eligibility to work in the United States. Such documentation must be provided to us within three (3) business days of your date of hire or our contingent employment relationship with you will be terminated. You will also be required, as a condition of employment, to sign the Company’s standard Employee Confidential Information And Assignment Of Inventions Agreement.

Your employment with the Company is for no specified period and constitutes at-will employment. As a result, you are free to resign at any time, for any reason or for no reason. We prefer that if you resign you would provide a two-week notice. Similarly, the Company is free to conclude its employment relationship with you at any time, with or without cause. However, in the event that your employment is actually or constructively terminated by the Company without cause (whether or not occurring in connection with a change of control of the Company) the company will provide you at the time of your termination, a lump sum payment of six (6) months’ salary (gross amount before all required federal, state taxes and 401(k) deductions), and upon your election of COBRA, will pay for the first six (6) months of COBRA premium for Medical, Dental and Vision coverages.

To indicate your acceptance of the Company’s offer, please sign and date this letter in the space provided below and return it to Human Resources. This letter sets forth the terms of your employment with the Company and supersedes any prior representations or agreements, whether written or oral. This letter may not be modified or amended except by a written agreement signed by the Company and by you.

Please respond no later than April 20, 2018. If we do not receive your acceptance by that time, we will assume you are not interested and this offer will be automatically withdrawn without further action as we will need to proceed with other candidates we have for this position.

I look forward to continuing to build MBI together with you.

Sincerely,

Linda V. Moore

EVP and General Counsel

I, ___Kevin Hammill____________________________________________, accept the terms of this agreement.