This excerpt taken from the EBAY DEF 14A filed Apr 30, 2007.
AMENDMENT AND TERMINATION OF THE PURCHASE PLAN
The Board may at any time and for any reason amend, terminate or extend the Purchase Plan. Generally, no such termination can affect previously made grants or may adversely affect the rights of any participant without such participants consent, nor may any amendment be made without approval of our stockholders within 12 months of its adoption by our Board if such amendment increases the number of shares that may be issued under the Purchase Plan or changes the designation of the employees or class of employees eligible to participate in the Purchase Plan.
Without stockholder consent and without regard to whether any participant rights may be considered to have been adversely affected, the Board is entitled to make such amendments to the Purchase Plan as it determines are advisable if the continuation of the Purchase Plan or any offering period would result in financial accounting treatment for the Purchase Plan that is different from the financial accounting treatment in effect on the date the Purchase Plan was initially adopted by our Board of Directors.
The Purchase Plan as amended and restated will terminate no later than June 14, 2017.