X0202 4 2007-12-28 0 0001347022 VeriChip CORP CHIP 0001044321 MARXE AUSTIN W & GREENHOUSE DAVID M C/O SPECIAL SITUATIONS FUNDS 527 MADISON AVENUE, SUITE 2600 NEW YORK NY 10022 0 0 1 0 Common Stock 2007-12-28 4 S 0 10300 2.4188 D 1019099 I By Limited Partnerships This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, L.P. (QP), Special Situations Technology Fund, L.P. (Tech) and Special Situations Technology Fund II, L.P. (Tech II), respectively . 562,522 shares of Common Stock are owned by QP, 64,179 shares of Common Stock are owned by Tech and 392,398 shares of Common Stock are owned by Tech II. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, Tech and Tech II is limited to the extent of his pecuniary interest. Austin W. Marxe 2008-01-02 David M. Greenhouse 2008-01-02