Note 10 - Equity Incentive Plans

6 Months Ended

Jun. 30, 2019

Notes to Financial Statements

Stock Incentive Plans Disclosure [Text Block]

10.

Equity Incentive Plans

2010

Stock Incentive Plan

. In

February 2011,

the Company’s stockholders approved the Gevo, Inc.

2010

Stock Incentive Plan (as amended and restated, the

"2010

Plan"). The

2010

Plan provides for the grant of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock awards, restricted stock units and other equity awards to employees and directors of the Company. During the

second

quarter of

2019,

the Company granted restricted stock awards vesting over

two

years to its employees and directors and were included in the shares reserved for issuance. At

June 30, 2019,

a total of

1,673,111

shares of common stock were reserved for issuance upon the exercise of outstanding stock option awards, stock appreciation rights, and restricted stock awards under the

2010

Plan, and an additional

1,725,615

 shares were available for grant. On

July 2, 2019,

the Company issued

254,500

in common stock in relation to restricted stock awards granted on

August 9, 2018.

Employee Stock Purchase Plan

. In

February 2011,

the Company’s stockholders approved the Employee Stock Purchase Plan (the "ESPP"). The offering periods for the ESPP are from

January 1

to

June 30

and from

July 1

to

December 31

of each calendar year. The Company has reserved

190

shares of common stock for issuance under the ESPP, of which

190

shares as of

June 

30,

2019

 are available for future issuance. The purchase price of the common stock under the ESPP is

85%

of the lower of the fair market value of a share of common stock on the

first

or last day of the purchase period. There were

no

purchases of common stock under the ESPP during the

three

and

six

months ended

June 30, 2019.