Note 5 - Stock-based Compensation |
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Notes to Financial Statements | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Disclosure of Compensation Related Costs, Share-based Payments [Text Block] |
For the years ended December 31,
201
7, 2016 and 2015, our total stock-based compensation expense, which includes reversals of expense for certain forfeited or cancelled awards, was approximately $394,000, $278,000 and $2.4 million, respectively. We have
not December 31, 2017,
2016 and 2015.
A summary of the status of our stock options as of December 31,
201
7, and changes during the year then ended, is presented below:
The weighted average grant-date fair value of options granted in 201
7, 2016, and 2015 was $0.19, $0.53 and $1.67, respectively. During 2017, 50,000 stock options with an aggregate intrinsic value of $4,400 were exercised in exchange for issuance of 50,000 shares of our common stock, resulting in gross proceeds of $18,100. During 2016, 50,000 stock options with an aggregate intrinsic value of $23,000 were exercised in exchange for issuance of 50,000 shares of our common stock, resulting in gross proceeds of $13,500. During 2015, 146,625 stock options with an aggregate intrinsic value of $144,000 were exercised in exchange for issuance of 124,238 shares of our common stock, resulting in gross proceeds of $66,000. In 2017, 2016, and 2015, the aggregate fair value of stock options vested during the year was $0, $3,000 and $277,000, respectively.A summary of the status of our unvested restricted stock as of December 31,
201
7, and changes during the year then ended, is presented below:
During 201
7, 2016 and 2015, 207,000, 66,000 and 333,250 shares, respectively, of restricted stock vested with aggregate vesting date fair values of $99,000, $63,000 and $511,000, respectively.In October 2017
,
50,000 shares of restricted stock held by a non-employee director with an aggregate fair value of $22,000 were forfeited as a result of his departure from the Board. During 2017, 140,000 shares of restricted stock held by non-employee directors with an aggregate fair value of $65,000 vested as scheduled according to the terms of the restricted stock agreements. Also during 2017, 17,000 shares of restricted stock held by a non-employee director with an aggregate fair value of $9,000, and 50,000 shares of restricted stock held by an executive officer with an aggregate fair value of $25,000, were vested by Board action after determination that the vesting events would not occur due to changes in the Company’s development programs.In February 2016,
100,000 shares of restricted stock held by an executive officer with an aggregate fair value of $96,000 were forfeited in connection with his separation from employment. During 2016, 66,000 shares of restricted stock held by non-employee directors with an aggregate fair value of $63,000 vested as scheduled according to the terms of the restricted stock agreements. Also during 2016, 106,000 shares of restricted stock held by non-employee directors with an aggregate fair value of $118,000 were forfeited as a result of their departures from the Board.During 2015, 120,000 shares of restricted stock held by non-employee directors with an aggregate fair value of $193,000 vested as scheduled according to the terms of the restricted stock agreements. Also during 2015, 193,250 shares of restricted stock held by employees with an aggregate fair value of $286,000 vested as scheduled according to the terms of the restricted stock agreements. During 2015, 27,000 shares of restricted stock held by employees with an aggregate fair value of $50,000 were forfeited in connection with their separation from employment. In April 2015,
20,000 shares of restricted stock held by an executive officer with an aggregate fair value of $32,000 vested upon reaching a milestone as defined by the terms of the restricted stock agreement. In
May 2015,
20,000 shares of restricted stock held by an executive officer with an aggregate fair value of $25,000 were forfeited in connection with his separation from employment. In July 2015,
61,000 shares of restricted stock held by non-employee directors with an aggregate fair value of $107,000 were forfeited as a result of their departures from the Board.During
2015, we paid minimum tax withholdings related to stock options exercised and restricted stock vested of
$24,000. No 2017 or 2016. As of December 31, 2017, there was approximately $176,000 of total unrecognized compensation cost related to stock option and restricted stock awards, which we expect to recognize over remaining weighted average vesting terms of 1.2 years. See Note 1 (e). |