date of grant. The grant date fair value of the 2,000,000 stock options was estimated at $0.49 each, for a total of $980,000, using the Black-Scholesoption pricing modelwith the following weighted average assumptions: dividend yield of 0%, expected volatility of 147.10%, risk-free interest rate of 3.39%, and expected life of 6.25 years. Pursuant to the stock option agreement, all unvested stock options were forfeited when Mr. Patel ceased to serve as an officer or director of the Company. Therefore, effective upon resignation, all 2,000,000 unvested stock options were forfeited by Mr. Patel. During the years ended August 31, 2010 and 2009, the Company recorded stock com pensation of $344,021 and $121,819, respectively, for the amortization of the fair value of this stock option. Since the stock option was forfeited prior to any of it vesting, the $465,840 previously recognized for stock compensation was reversed on August 9, 2010, the date of forfeiture.
On December 15, 2009, the Board approved, and the Company granted a stock option to Mr. Patel to purchase up to 250,000 shares of the Company’s common stock at an exercise price of $0.44 per share, the fair market value of the Company’s common stock on the date of grant. The stock option granted to Mr. Patel was fully vested and exercisable upon grant. The grant date fair value of the 250,000 stock options was estimated at $0.33 each, for a total of $82,500, using the Black-Scholes option pricing model with the following weighted average assumptions:dividend yield of 0%, expected volatility of 143.72%, risk-free interest rate of 0.88%, and expected life of 2.5 years. Pursuant to the stock option agreement, Mr. Patel has 90 days following the date he ceased to be an officer or di rector of the Company to exercise these stock options. Accordingly, Mr. Patel had until November 7, 2010 to exercise the 250,000 stock options granted to him. During the year ended August 31, 2010, the Company recorded stock compensation of $82,500 related to this grant. Since the fair value of the stock options was recognized as expense upon grant and the stock options were fully vested, the Company did not record any reversal of stock compensation related to this grant upon Mr. Patel’s resignation. On November 1, 2010, Mr. Patel exercised 70,000 of the 250,000 stock options granted to him on December 15, 2009. The remaining 180,000 stock options were forfeited, unexercised, effective November 7, 2010.
On April 6, 2010, the Company entered into an amendment to the Employment Agreement dated June 24, 2009 with Mr. Patel (the “Amended Employment Agreement”), pursuant to which Mr. Patel agreed to continue to serve as the Company’s President and CEO, until March 31, 2011 (the “Employee Employment Commitment”). In consideration of the Employee Employment Commitment, Mr. Patel was granted a stock option to purchase up to 150,000 shares of the Company’s common stock at an exercise price of $0.58 per share, the fair market value of the Company’s common stock on the date of grant. Subject to the terms, restrictions and earlier termination provisions as set forth in the option agreement dated April 6, 2010 between the Company and Mr. Patel, the option vests as follows:
(a) as to 37,500 on June 30, 2010;
(b) as to 37,500 on September 30, 2010;
(c) as to 37,500 on December 31, 2010; and
(d) as to 37,500 on March 31, 2011.
The grant date fair value of the 150,000 stock options was estimated at $0.48 each, for a total of $72,403, using the Black-Scholes option pricing model with the following weighted average assumptions:dividend yield of 0%, expected volatility of 139.58%, risk-free interest rate of 2.71%, and expected life of 3.75 years. As of the date that Mr. Patel tendered his resignation, 37,500 of the 150,000 stock options had vested. Pursuant to the stock option agreement,the vesting of this stock option was accelerated when the Company mutually terminated the Amended Employment Agreement between the Company and Mr. Patel and Mr. Patel has the right at any time within the then remaining exercise period of such vested stock options to exercise the 150,000 stock options granted to him on April 6, 2010. During the year ended August 31, 2010, the Company recorded stock compensation of $72,403 related to this grant. On November 1, 2010, Mr. Patelexercised all 150,000 of these stock options via the cashless exercise option set forth in the option agreement and the Company issued 80,952 shares of its common stock in full settlement of this of this stock option exercise.
Stock Options Granted to and Forfeited by John A. Conklin
On April 1, 2010, the Company entered into a consulting agreement with Mr. John A. Conklin whereby Mr. Conklin provided technical advice, guidance, and management oversight to help advance the commercial development of the Company’s technologies, including but not necessarily limited to its SolarWindow™ and MotionPower™ technologies. In consideration of Mr. Conklin’s services, the Company paid Mr. Conklin $11,000 per calendar