This excerpt taken from the ARRY DEF 14A filed Sep 23, 2008.
9. OPTION PRICE
The Option Price of each Option shall be fixed by the Board and stated in the Award Agreement evidencing such Option. The Option Price shall be at least the aggregate Fair Market Value on the Grant Date of the shares of Stock subject to the Option; provided, however, that in the event that a Grantee would otherwise be ineligible to receive an Incentive Stock Option by reason of the provisions of Sections 422(b)(6) and 424(d) of the Code (relating to ownership of more than ten percent of the Company's outstanding Stock), the Option Price of an Option granted to such Grantee that is intended to be an Incentive Stock Option shall be not less than the greater of the par value of a share of Stock or 110 percent of the Fair Market Value of a share of Stock on the Grant Date. In no case shall the Option Price of any Option be less than the par value of a share of Stock.