Exhibit 10.90


 


 


Description of Non-Employee Director
Compensation Arrangements


 


In December 2010,
the Board of Directors (the “Board”) of Amyris, Inc. (the “Company”)
adopted a non-employee director compensation program (the “Program”)
that took effect on January 1, 2011. In February 2015, due to the commitment required for the role and consistent with similarly
situated companies, the Board approved an increase to the annual cash retainer payable to the chair of the Audit Committee of the
Board (the “Audit Committee”) from $15,000 to $30,000, effective
January 1, 2015. In November 2015, the Leadership Development and Compensation Committee of the Board (the “LDCC”)
recommended to the Board that it increase the equity component of the Program to provide for awards at approximately the 50th
percentile of our competitive market. In December 2015, the Board approved an increase to the equity component of the Program,
which had previously consisted of an initial award upon joining the Board of an option to purchase 1,333 shares of the Company’s
common stock (“Common Stock”) and an annual award consisting of an
option to purchase 400 shares of Common Stock and 200 restricted stock units. In October 2016, the LDCC further recommended to
the Board that it add an annual retainer for the position of non-executive Board chair in the form of an award of 2,333 restricted
stock units to the Program, which the Board approved in November 2016. Under the current Program, in each case subject to final
approval by the Board with respect to equity awards:


 


		·	Each non-employee director receives an
annual cash retainer of $40,000, an initial award upon joining the Board consisting of an option to purchase 3,000 shares of Common
Stock and 2,000 restricted stock units, and an annual award consisting of an option to purchase 1,733 shares of Common Stock and
1,133 restricted stock units. The initial option award vests in equal quarterly installments over three years, the initial restricted
stock unit award vests in equal annual installments over three years, and the annual option and restricted stock unit awards become
fully vested after one year (in each case subject to continued service through the applicable vesting date).



 





		·	The non-executive Board chair, if any,
receives an additional annual award of 2,333 restricted stock units. The award becomes fully vested after one year (subject to
continued service through the vesting date).



 





		·	The chair of the Audit Committee receives
an additional annual cash retainer of $30,000.



 





		·	The chair of the LDCC receives an additional
annual cash retainer of $10,000.



 





		·	The chair of the Nominating and Governance
Committee of the Board (the “NGC”) receives an additional annual cash retainer of $9,000.



 





		·	Audit Committee, LDCC and NGC members
other than the chair receive an additional annual cash retainer of $7,500, $5,000 and $4,500, respectively.



 


In
general, all of the retainers described above are paid quarterly in arrears. In cases where a non-employee director serves for
part of the year in a capacity entitling him or her to a retainer payment, the retainer is prorated to reflect his or her period
of service in that capacity. Non-employee directors are also eligible for reimbursement of their expenses incurred in attending
Board and committee meetings.