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Stock Options, Stock Grants, SARs and ESPP
6 Months Ended
Jun. 30, 2015
Stock Options, Stock Grants, SARs and ESPP
Note 7. Stock Options, Stock Grants, SARs and ESPP

Stock-based compensation granted under the Company’s stock plans is expensed in tranches over the vesting period. Options and non-performance based grants generally vest equally over a three or four-year period and the options have a maximum term of ten years. For the six months ended June 30, 2015 we granted 197,708 stock incentive units at a grant price between $73.62 and $78.86. Each performance unit and restricted stock unit represents a contingent right to receive one share of common stock as of the vesting date. Such common stock may be subject to forfeiture for the payment of any required tax withholding.