Manner of Exercise. The Option may be exercised in respect of a whole number of Option Shares (and only in respect of a whole number) by written notice of exercise to the Committee (or its designee) at the Company’s principal executive offices (which are currently located at 28161 North Keith Drive, Lake Forest, Illinois 60045), which is received prior to the Option’s Expiration Date, together with # full payment of the Exercise Price of the Option Shares in respect of which the Option is exercised and # full payment of an amount equal to the Company’s federal, state and local withholding tax obligation, if any, in connection with the Option’s exercise.