Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  RAMSAY DAVID A
 2. Date of Event Requiring Statement (Month/Day/Year)
05/20/2013		 3. Issuer Name and Ticker or Trading Symbol
HALOZYME THERAPEUTICS INC [HALO]
(Last)
(First)
(Middle)
11388 SORRENTO VALLEY ROAD		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP and Chief Financial Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN DIEGO, CA 92121		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 105,000
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Purchase Common Stock 11/11/2007 11/11/2013 Common Stock 130,000 $ 0.39 D  
Option to Purchase Common Stock 12/08/2008 12/08/2014 Common Stock 20,058 $ 2.02 D  
Option to Purchase Common Stock 02/01/2009 10/13/2014 Common Stock 50,000 $ 2.05 D  
Option to Purchase Common Stock   (1) 02/04/2020 Common Stock 14,697 $ 5.55 D  
Option to Purchase Common Stock 02/06/2012 02/06/2018 Common Stock 24,620 $ 5.6 D  
Option to Purchase Common Stock 02/05/2013 02/05/2019 Common Stock 25,148 $ 6.1 D  
Option to Purchase Common Stock 02/04/2014(2) 02/04/2023 Common Stock 17,700 $ 6.55 D  
Option to Purchase Common Stock   (3) 02/03/2021 Common Stock 15,022 $ 7.14 D  
Option to Purchase Common Stock 02/05/2011 02/05/2017 Common Stock 12,943 $ 7.51 D  
Option to Purchase Common Stock 02/02/2013(2) 02/02/2022 Common Stock 25,000 $ 11.29 D  
Restricted Stock Award   (4) 02/02/2022 Common Stock 9,375 $ 0 D  
Restricted Stock Award 02/04/2014(5) 02/04/2024 Common Stock 8,850 $ 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
RAMSAY DAVID A
11388 SORRENTO VALLEY ROAD
SAN DIEGO, CA 92121		       VP and Chief Financial Officer  

Signatures

David A. Ramsay 05/24/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) 4,220 shares of this option grant vest in equal monthly installments of 469 shares. The remaining balance is fully vested.
(2) This option vests one-fourth on such date and then 1/48 monthly thereafter.
(3) 8,205 shares of this option vest in equal monthly increments of 391 shares. The remaining balance is fully vested.
(4) This restricted stock award vests in equal annual installments of 3,125 shares in February of 2014, 2015 and 2016.
(5) This award vests one-fourth on such date and then one-fourth on each anniversary thereafter.

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