EXHIBIT 1
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k) under the Securities Exchange
Act of 1934, as amended, each of the persons named below agree to the joint
filing of a statement on Schedule 13D, including amendments thereto, with
respect to the common stock, par value $0.001 per share, of ImClone Systems
Incorporated, and further agree that this Joint Filing Agreement be included as
an exhibit to such filings, provided that, as contemplated by Section
13d-1(k)(1)(ii), no person shall be responsible for the completeness or
accuracy of the information concerning the other persons making the filing,
unless such person knows or has reason to believe that such information is
inaccurate.
This Joint Filing Agreement may be executed in any number of
counterparts, all of which collectively shall constitute one and the same
instrument.
Dated: October 18, 1999
/RIVERDALE LLC
By: /s/Xxxx X. Icahn
Xxxx X. Icahn
Its: Member
HIGH RIVER LIMITED PARTNERSHIP
By: RIVERDALE LLC
Its: General Partner
By: /s/Xxxx X. Icahn
Xxxx X. Icahn
Its: Member
Xxxx X. Icahn
By: /s/Xxxx X. Icahn
Xxxx X. Icahn
