Common use of Period of Option Clause in Contracts

Period of Option. Except as otherwise provided in the Plan, the Option is cumulatively exercisable in installments in accordance with the following schedule: Year Beginning February 23, Percent of Shares Subject to Option Purchasable 2006 None 2007 33.3 % 2008 33.3 % 2009 33.3 % 2010 100 % The Option may be exercised from time to time during the option period as to the total number of shares allowable under this Section 2, or any lesser amount thereof. The Option is not exercisable before February 23, 2007 or after February 23, 2017.

Period of Option. Except as otherwise provided in the Plan, the Option is cumulatively exercisable in installments in accordance with the following schedule: Year Beginning February 23, Percent of Shares Subject to Option Year Beginning Purchasable 2006 -------------- ----------- 1996 None 2007 33.3 1997 25% 2008 33.3 1998 50% 2009 33.3 1999 75% 2010 100 2000 100% The Option may be exercised from time to time during the option period as to the total number of shares allowable under this Section 2, or any lesser amount thereof. The Option is not exercisable before February 23__________________, 2007 199___ or after February 23__________________, 2017200___.

Period of Option. Except as otherwise provided in the Plan, the Option is cumulatively exercisable in installments in accordance with the following schedule: Year Beginning February 23, Percent of Shares Subject to Option Purchasable 2002 None 2003 25% 2004 50% 2005 75% 2006 None 2007 33.3 % 2008 33.3 % 2009 33.3 % 2010 100 100% The Option may be exercised from time to time during the option period as to the total number of shares allowable under this Section 2, or any lesser amount thereof. The Option is not exercisable before February 23, 2007 or after February 23, 2017.

Period of Option. Except as otherwise provided in the Plan, the Option is cumulatively exercisable in installments in accordance with the following schedule: Year Beginning February 23, Percent of Shares Subject to Option Purchasable 2006 1997 None 2007 33.3 1998 25 % 2008 33.3 1999 50 % 2009 33.3 2000 5 % 2010 2001 100 % The Option may be exercised from time to time during the option period as to the total number of shares allowable under this Section 2, or any lesser amount thereof. The Option is not exercisable before February 23, 2007 or after February 23, 2017.