X0202 4/A 2005-12-31 2006-01-04 0 0000722567 CAPRIUS INC CAPS 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 2005-12-31 4 J 0 317037 0 A 1351519 I By Limited Partnerships Warrants A 0.28 2005-12-31 4 J 0 1902225 0 A 2005-05-16 2010-02-15 Common Stock 95111 8109121 I By Limited Partnerships Warrants B 0.145 2005-12-31 4 J 0 634075 0 A 2005-11-15 2010-02-15 Common Stock 31704 2703040 I By Limited Partnerships This is a joint filing by Austin W. Marxe (Marxe) & 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 Private Equity Fund, L.P. (PE), respectively. 317,037 shares of Com Stk, 1,902,225 Wts A cvt into 95,111 shares of Com Stk & 634,076 Wts B, cvt into 31,704 shares of Com Stk are held by QP & 1,034,482 shares of Com Stk, 6,206,896 Wts A, cvt into 310,345 shares of Com Stk and 2,068,965 Wts B, cvt into 103,448 shares of Com Stk are held by PE. Pursuant to that certain Exchange Tender Offer described in the Schedule TO-I of Special Situations Fund III, L.P. (SSFIII), as filed by SSFIII with the Securities and Exchange Commission on November 17, 2005, SSF III transferred the securities included in this Form 4 to QP on December 31, 2005. The interest of Marxe & Greenhouse in the shares of Common Stock owned by QP & PE is limited to the extent of his pecuniary interest. Austin W. Marxe 2006-01-19 David M. Greenhouse 2006-01-19