SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* ICAHN CARL C ET AL (Last) (First) (Middle) C/O ICAHN ASSOCIATES CORP. 767 FIFTH AVE., SUITE 4700 (Street) NEW YORK NY 10153 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol IMCLONE SYSTEMS INC [ IMCL ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/24/2006
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $.001 ("Shares")	08/24/2006		P		35,682	A	$29.98	10,890,135	I	PLEASE SEE FOOTNOTES(1)(2)(3)
Shares	08/24/2006		P		55,560	A	$29.98	10,945,695	I	PLEASE SEE FOOTNOTES(1)(2)(3)
Shares	08/25/2006		P		26,164	A	$29.98	10,971,859	I	PLEASE SEE FOOTNOTES
Shares	08/25/2006		P		40,740	A	$29.98	11,012,599	I	PLEASE SEE FOOTNOTES
Shares	08/28/2006		P		6,157	A	$30.12	11,018,756	I	PLEASE SEE FOOTNOTES(1)(2)(3)
Shares	08/28/2006		P		9,588	A	$30.12	11,028,344	I	PLEASE SEE FOOTNOTES(1)(2)(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* ICAHN CARL C ET AL (Last) (First) (Middle) C/O ICAHN ASSOCIATES CORP. 767 FIFTH AVE., SUITE 4700 (Street) NEW YORK NY 10153 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* AMERICAN PROPERTY INVESTORS INC (Last) (First) (Middle) 445 HAMILTON AVENUE SUITE 1210 (Street) WHITE PLAINS NY 10601 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* AMERICAN REAL ESTATE HOLDINGS L P (Last) (First) (Middle) 445 HAMILTON AVENUE SUITE 1210 (Street) WHITE PLAINS NY 10601 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* BARBERRY CORP. (Last) (First) (Middle) 445 HAMILTON AVENUE SUITE 1210 (Street) WHITE PLAINS NY 10601 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Hopper Investments LLC (Last) (First) (Middle) 445 HAMILTON AVENUE SUITE 1210 (Street) WHITE PLAINS NY 10601 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* HIGH RIVER LIMITED PARTNERSHIP (Last) (First) (Middle) 445 HAMILTON AVENUE SUITE 4700 (Street) WHITE PLAINS NY 10601 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* BECKTON CORP (Last) (First) (Middle) 445 HAMILTON AVENUE SUITE 1210 (Street) WHITE PLAINS NY 10601 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. American Real Estate Holdings Limited Partnership ("AREH") directly beneficially owns 4,312,856 Shares, Barberry Corp. ("Barberry") directly beneficially owns 900,800 Shares and High River Limited Partnership ("High River") directly beneficially owns 5,814,688 Shares. Beckton Corp. ("Beckton") is the sole shareholder of American Property Investors, Inc. ("API"), which is the general partner of AREH. Barberry is the sole member of Hopper Investments LLC ("Hopper"), which is the general partner of High River. Beckton and Barberry are 100 percent owned by Carl C. Icahn. As such, Mr. Icahn is in a position indirectly to determine the investment and voting decisions made by all of the foregoing entities.

2. Each of Beckton and API by virtue of their relationship to AREH, may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the 4,312,856 Shares which AREH owns. Each of Beckton and API disclaim beneficial ownership of such Shares except to the extent of their pecuniary interest therein. Each of Barberry and Hopper by virtue of their relationship to High River, may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the 5,814,688 Shares which High River owns. Each of Barberry and Hopper disclaim beneficial ownership of such Shares except to the extent of their pecuniary interest therein.

3. Mr. Icahn by virtue of his relationship to API, AREH, Barberry, Beckton, Hopper and High River, may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the 4,312,856 Shares which AREH owns, the 900,800 Shares which Barberry owns, and the 5,814,688 Shares which High River owns. Mr. Icahn disclaims beneficial ownership of such Shares except to the extent of his pecuniary interest therein. Gail Golden, the spouse of Mr. Icahn, directly beneficially owns 15,000 Shares. Mr. Icahn disclaims beneficial ownership of such Shares for all purposes.

	CARL C. ICAHN	08/28/2006
	AMERICAN PROPERTY INVESTORS, INC.	08/28/2006
	AMERICAN REAL ESTATE HOLDINGS LIMITED PARTNERSHIP	08/28/2006
	BARBERRY CORP.	08/28/2006
	HOPPER INVESTMENTS LLC	08/28/2006
	HIGH RIVER LIMITED PARTNERSHIP	08/28/2006
	BECKTON CORP.	08/28/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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