This excerpt taken from the AMZN 10-K filed Mar 11, 2005.
Recent Sales of Unregistered Securities
On October 26, 2004, De Anza Properties exercised a portion of their warrant and received 4,943 shares of our common stock at a per share exercise price of $6.1588. We assumed this warrant obligation in connection with a 1998 acquisition. The shares were issued in reliance on an exemption from registration under Section 4(a)(2) under the 1933 Act.