X0306 4 2014-06-06 0 0000911148 CADUS CORP KDUS 0000921669 ICAHN CARL C C/O ICAHN ASSOCIATES HOLDING LLC 767 FIFTH AVE., SUITE 4700 NEW YORK NY 10153 0 0 1 0 Common Stock, $0.01 par value ("Shares") 2014-06-06 4 X 0 12563840 19222675.20 A 17824678 I please see footnote Subscription Rights ("right to buy") 1.53 2014-06-06 4 X 0 12563840 0 D 2014-04-29 2014-05-29 Shares 12563840 0 I please see footnote Each of Barberry Corp. ("Barberry") and High River Limited Partnership ("High River") has beneficial ownership with regard to 7,538,692 and 7,653,193 Shares, respectively. Barberry owns 100% of the equity of Hopper Investments LLC ("Hopper"), and Hopper is the general partner of High River. As such, each of Barberry and Hopper is deemed to beneficially own the 7,653,193 Shares that High River directly beneficially owns. Carl C. Icahn has direct beneficial ownership with regard to 2,632,793 Shares and is deemed to beneficially own the 15,191,885 Shares held by Barberry and High River. Barberry and Hopper disclaim beneficial ownership of the Shares held by High River for all other purposes. Mr. Icahn disclaims beneficial ownership of the Shares held by High River and Barberry for all other purposes. Represents Shares acquired upon exercise of basic subscription rights and oversubscription rights allocated to Barberry, High River and Mr. Icahn in the rights offering conducted by the Issuer, which expired on May 29, 2014. The acquisition of the subscription rights by Barberry, High River and Mr. Icahn was exempt from Section 16 by virtue of Rule 16a-9(b) and the purchase of Shares by Barberry, High River and Mr. Icahn pursuant to the exercise of the subscription rights was exempt from Section 16(b) by virtue of Section 16b-6(b). CARL C. ICAHN 2014-06-09