Our 2014 Omnibus Equity Incentive Plan (the “2014 Plan”) authorizes the issuance of distribution equivalent rights, incentive stock options, non-qualified stock options, performance stock, performance units, restricted ordinary shares, restricted stock units, stock appreciation rights, tandem stock appreciation rights and unrestricted ordinary shares to our directors, officer, employees, consultants and advisors. The Company has reserved up to 300,000 shares of common stock for issuance under the 2014 Plan. 

From time to time, the Company grants stock options to directors, officers, and employees. These awards are valued at the grant date by determining the fair value of the instruments, net of estimated forfeitures. The value of each award is amortized on a straight-line basis over the requisite service period.

The following table summarizes stock option activity for the twelve months ended September 30, 2020 and the six months ended March 31, 2021:

The Company recognized compensation expense of $270 and $19 during the three months ended March 31, 2021 and 2020, respectively, and $287 and $48 during the six months ended March 31, 2021 and 2020, respectively, related to stock option awards granted to certain employees and officers based on the grant date fair value of the awards, net of estimated forfeitures and the revaluation for existing options whereby the expiration date was extended.

At March 31, 2021, the Company had $55 of unrecognized compensation expense (net of estimated forfeitures) associated with stock option awards which the Company expects to recognize as compensation expense through December 2021.

The exercise price for stock options outstanding and exercisable outstanding at March 31, 2021 is as follows:  

The following table summarizes information about the Company’s non-vested shares outstanding as of March 31, 2021:

The following table depicts the Black-Scholes model valuation assumptions for the stock options granted during the six months ended March 31, 2021.  There were no stock option grants during the six months ended March 31, 2020.