Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Thomsen Jillian B.
   2. Issuer Name and Ticker or Trading Symbol
NEKTAR THERAPEUTICS [NKTR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP & Chief Accounting Officer
(Last)
(First)
(Middle)
C/O NEKTAR THERAPEUTICS, 455 MISSION BAY BOULEVARD SOUTH		 3. Date of Earliest Transaction (Month/Day/Year)
02/06/2013
(Street)

SAN FRANCISCO, CA 94158		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities
(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 of Derivative Security: 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
Stock Option $ 8.8 02/06/2013   A   37,500     (1) 02/05/2021 Common Stock 37,500 $ 0 37,500 D  
Stock Option $ 8.8 02/06/2013   A   37,500     (2) 02/05/2021 Common Stock 37,500 $ 0 37,500 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Thomsen Jillian B.
C/O NEKTAR THERAPEUTICS
455 MISSION BAY BOULEVARD SOUTH
SAN FRANCISCO, CA 94158		       VP & Chief Accounting Officer  

Signatures

 Gil M. Labrucherie, Attorney-in-Fact   02/08/2013
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) This option was granted on February 6, 2013 and vests in monthly installments over the four-year period following the grant date.
(2) This stock option is subject to both time-based vesting and performance-based vesting conditions, both of which must be met before the shares subject to the option become vested and exerciseable. The time-based vesting is on a monthly pro-rata basis over a period of four (4) years from the grant date (February 6, 2013). The performance-based vesting condition will be met only if Nektar (or a licensee) files a new drug registration with the FDA or the European Medicines Agency for a significant drug candidate program including, without limitation, the following: (1) naloxegol (an oral peripherally-acting opioid antagonist); (2) etirinotecan pegol (a topoisomerase I inhibitor); (3) NKTR-061/Amikacin Inhale (a drug-device combination for an inhaled solution of amikacin); or (4) BAX-855 (a longer-acting (PEGylated) form of a full-length recombinant factor VIII (rFVIII) protein).

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