cnooc & chevron, page-2

The shares will be issued by the EXE each with a free atatched option, refer to announcment:

"Exoma has also granted to CNOOC an option (the Option), expiring five days after the
satisfaction of all conditions precedent, to acquire 86.6 million ordinary shares of the Company at
31.5 cents per share. Each share will be issued with one free attaching option to acquire a
further ordinary share at an exercise price of 31.5 cents, expiring 31 December 2012."