X0201 4 2003-08-05 1 0001102993 LIVEPERSON INC lpsn 0001044321 MARXE AUSTIN W & GREENHOUSE DAVID M 153 EAST 53RD ST, 55TH FL NEW YORK NY 10022 0 0 1 0 Common Stock 2003-08-05 4 S 0 50000 3 D 2960354 I By Limited Partnerships This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). Marxe and Greenhouse share voting and investment control over all securities owned by Special Situations Cayman Fund, L.P. (Cayman), Special Situations Technology Fund, L.P. (Tech) and Special Situations Technology Fund II, L.P. (Tech II), respectively. The securities reported herein are based on 38,000 shares of Common Stock held by Cayman, 470,792 shares of Common Stock held by Tech and 2,451,562 shares of Common Stock held by Tech II. The interest of each of Marxe and Greenhouse in the Common Stock owned by Cayman, Tech and Tech II is limited to the extent of his pecuniary interest, if any, in Cayman, Tech and Tech II, respectively. Austin W. Marxe 2003-08-06 David M. Greenhouse 2003-08-06