SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 4)*

Amylin Pharmaceuticals, Inc.
(Name of Issuer)

Common Stock, Par Value $.001
(Title of Class of Securities)

032346108
(CUSIP Number)

Marc Weitzen, Esq.
Icahn Capital LP
767 Fifth Avenue, 47th Floor
New York, New York 10153
(212) 702-4388

(Name, Address and Telephone Number of Person Authorized to
Receive Notices and Communications)

February 4, 2009
(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box / /.

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Partners Master Fund LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS
 WC

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 5,592,721

8 SHARED VOTING POWER
 0

9 SOLE DISPOSITIVE POWER
 5,592,721

10 SHARED DISPOSITIVE POWER
 0

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 5,592,721

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 4.06%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Partners Master Fund II LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS
 WC

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 2,057,967

8 SHARED VOTING POWER
 0

9 SOLE DISPOSITIVE POWER
 2,057,967

10 SHARED DISPOSITIVE POWER
 0

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 2,057,967

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 1.50%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Partners Master Fund III LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS
 WC

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 787,207

8 SHARED VOTING POWER
 0

9 SOLE DISPOSITIVE POWER
 787,207

10 SHARED DISPOSITIVE POWER
 0

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 787,207

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 0.57%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Offshore LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 8,437,895

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 8,437,895

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 8,437,895

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 6.13%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Partners LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS
 WC

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 4,533,433

8 SHARED VOTING POWER
 0

9 SOLE DISPOSITIVE POWER
 4,533,433

10 SHARED DISPOSITIVE POWER
 0

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 4,533,433

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 3.29%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Onshore LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 4,533,433

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 4,533,433

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 4,533,433

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 3.29%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Capital LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 12,971,328

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 12,971,328

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 12,971,328

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 9.43%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 IPH GP LLC

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 12,971,328

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 12,971,328

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 12,971,328

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 9.43%

14 TYPE OF REPORTING PERSON
 OO


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Enterprises Holdings L.P.

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 12,971,328

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 12,971,328

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 12,971,328

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 9.43%

14 TYPE OF REPORTING PERSON
 PN


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Icahn Enterprises G.P. Inc.

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 12,971,328

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 12,971,328

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 12,971,328

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 9.43%

14 TYPE OF REPORTING PERSON
 CO


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Beckton Corp.

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 12,971,328

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 12,971,328

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 12,971,328

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 9.43%

14 TYPE OF REPORTING PERSON
 CO


SCHEDULE 13D
AMENDMENT NO. 4

CUSIP No. 032346108

1 NAME OF REPORTING PERSON
 Carl C. Icahn

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
 (a) / /
 (b) / /

3 SEC USE ONLY

4 SOURCE OF FUNDS

5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
 ITEMS 2(d) or 2(e) / /

6 CITIZENSHIP OR PLACE OF ORGANIZATION
 United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7 SOLE VOTING POWER
 0

8 SHARED VOTING POWER
 12,971,328

9 SOLE DISPOSITIVE POWER
 0

10 SHARED DISPOSITIVE POWER
 12,971,328

11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 12,971,328

12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES//

13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
 9.43%

14 TYPE OF REPORTING PERSON
 IN


SCHEDULE 13D
AMENDMENT NO. 4

Item 1. Security and Issuer

The Schedule 13D filed with the Securities and Exchange Commission ("SEC") by the Reporting Persons on May 22, 2008 (as amended, the "Initial 13D"), as amended by amendment No. 1, amendment no. 2 and amendment no. 3 thereto, with respect to the shares of Common Stock, par value $.001 (the "Shares"), issued by Amylin Pharmaceuticals, Inc., (the "Issuer"), is hereby amended to furnish the additional information set forth herein. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Initial 13D. The address of the principal executive offices of the Issuer is 9360 Towne Centre Drive, San Diego, California 92121.

Item 3. Source and Amount of Funds or Other Consideration

The aggregate purchase price of the 12,971,328 Shares purchased by the Reporting Persons collectively was $316,400,196 (including commissions). The source of funding for the purchase of these Shares was the general working capital of the respective purchasers. The Shares are held by the Reporting Persons in margin accounts together with other securities. Such margin accounts may from time to time have debit balances. Part of the purchase price of the Shares purchased by the Reporting Persons was obtained through margin borrowing. The Shares purchased by the Reporting Persons are maintained in margin accounts that include positions in securities in addition to Shares. As of the close of business on February 3, 2009, the indebtedness of (i) Icahn Partners' margin account was approximately $25,515,330, (ii) Icahn Master's margin account was approximately $103,506,072, (iii) Icahn Master II's margin account was approximately $29,822,299, and (iv) Icahn Master III's margin account was approximately $6,335,111.

Item 5. Interest in Securities of the Issuer

Item 5(a) of the Initial 13D is hereby amended and restated to read in its
entirety as follows:

(a) As of February 4, 2009, the Reporting Persons may be deemed to beneficially own, in the aggregate, 12,971,328 Shares, representing approximately 9.43% of the Issuer's outstanding Shares (based upon the 137,617,353 Shares stated to be outstanding as of October 28, 2008 by the Issuer in the Issuer's Form 10-Q, filed with the Securities and Exchange Commission on November 4, 2008).

Item 5(b) of the Initial 13D is hereby amended and restated to read in its
entirety as follows:

(b) Icahn Master has sole voting power and sole dispositive power with regard to 5,592,721 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master II has sole voting power and sole dispositive power with regard to 2,057,967 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master III has sole voting power and sole dispositive power with regard to 787,207 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Partners has sole voting power and sole dispositive power with regard to 4,533,433 Shares. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares.

Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn, by virtue of their relationships to each of Icahn Master, Icahn Master II and Icahn Master III (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which each of Icahn Master, Icahn Master II and Icahn Master III directly beneficially owns. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn, by virtue of their relationships to Icahn Partners (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which Icahn Partners directly beneficially owns. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes.

Item 5(c) of the Initial 13D is hereby amended by the addition of the
following:

(c)

The following table sets forth all transactions with respect to Shares effected during the past sixty (60) days by any of the Reporting Persons. Except as otherwise noted below, all such transactions were purchases of Shares effected in the open market, and the table includes commissions paid in per share prices.

Name of Date of No. of Shares Purchase Price Per
Reporting Transaction Purchased Share (U.S.$)
Person
--------------------------------------------------------------------------------
Icahn Partners 1/30/2009 273,846 11.3948
--------------------------------------------------------------------------------
Icahn Partners 2/2/2009 36,418 11.4675
--------------------------------------------------------------------------------
Icahn Master 1/30/2009 339,204 11.3948
--------------------------------------------------------------------------------
Icahn Master 2/2/2009 22,447 11.4675
--------------------------------------------------------------------------------
Icahn Master II 1/30/2009 125,320 11.3948
--------------------------------------------------------------------------------
Icahn Master III 1/30/2009 47,936 11.3948
--------------------------------------------------------------------------------


SIGNATURE

After reasonable inquiry and to the best of each of the undersigned knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: February 4, 2009

ICAHN PARTNERS MASTER FUND LP

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

ICAHN PARTNERS MASTER FUND II LP

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

ICAHN PARTNERS MASTER FUND III LP

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

ICAHN OFFSHORE LP

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

ICAHN PARTNERS LP

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

ICAHN ONSHORE LP

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

[Signature Page of Schedule 13D Amendment No. 4 - Amylin Pharmaceuticals, Inc.]


ICAHN CAPITAL LP

By: IPH GP LLC, its general partner

By: Icahn Enterprises Holdings L.P., its sole member By: Icahn Enterprises G.P. Inc., its general partner

By: /s/ Peter K. Shea
 -----------------
 Name: Peter K. Shea
 Title: President

IPH GP LLC
By: Icahn Enterprises Holdings L.P., its sole member By: Icahn Enterprises G.P. Inc., its general partner

By: /s/ Peter K. Shea
 -----------------
 Name: Peter K. Shea
 Title: President

ICAHN ENTERPRISES HOLDINGS L.P.
By: Icahn Enterprises G.P. Inc., its general partner

By: /s/ Peter K. Shea
 -----------------
 Name: Peter Shea
 Title: President

[Signature Page of Schedule 13D Amendment No. 4 - Amylin Pharmaceuticals, Inc.]


ICAHN ENTERPRISES G.P. INC.

By: /s/ Peter K. Shea
 -----------------
 Name: Peter K. Shea
 Title: President

BECKTON CORP.

By: /s/ Edward E. Mattner
 ---------------------
 Name: Edward E. Mattner
 Title: Authorized Signatory

[Signature Page of Schedule 13D Amendment No. 4 - Amylin Pharmaceuticals, Inc.]


Dated: February 4, 2009


/s/ Carl C. Icahn
-----------------
CARL C. ICAHN

[Signature Page of Schedule 13D Amendment No. 4 - Amylin Pharmaceuticals, Inc.]

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