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11. Stock-Based Compensation Expense
Since the completion of the CHS Transactions on April 30, 2010, the board of directors has adopted and the shareholders have approved two stock option award plans. The 2010 Thermon Group Holdings, Inc. Restricted Stock and Stock Option Plan (“2010 Plan”) was approved on July 28, 2010. The plan authorized the issuance of 2,767,171 stock options or restricted shares (on a post stock split basis). On April 8, 2011, the board of directors approved the Thermon Group Holdings, Inc. 2011 Long-Term Incentive Plan (“2011 LTIP”). The 2011 LTIP made available 2,893,341 shares of the Company’s common stock that may be awarded to employees, directors or non-employee contractors compensation in the form of stock options or restricted stock awards.
At June 30, 2012, there were 1,815,499 options outstanding. Stock compensation expense was $58 and $6,341 during the three months ended June 30, 2012 and 2011, respectively. At the date of the IPO on May 5, 2011, we recorded stock compensation expense of $6,310 which represented all unamortized stock compensation expense related to the outstanding stock options under the 2010 Plan.
The right to purchase shares under the options vests over a five to ten-year period, beginning on the date of grant. Stock options must be exercised within ten years from date of grant. Stock options were issued with an exercise price which was equal to the market price of our common stock at the grant date. We estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. During the three month period ended June 30, 2012, we did not make any changes in accounting principles or methods of estimates relating to stock based compensation expense.
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