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
OMB APPROVAL
OMB Number: 3235-0104
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  Fuhrman Alan
 2. Date of Event Requiring Statement (Month/Day/Year)
05/15/2013		 3. Issuer Name and Ticker or Trading Symbol
AMBIT BIOSCIENCES CORP [AMBI]
(Last)
(First)
(Middle)
C/O AMBIT BIOSCIENCES CORPORATION, 11080 ROSELLE STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
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)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

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
Stock Option (Right to Buy)   (1) 10/10/2020 Common Stock 125 $ 1,680 D  
Stock Option (Right to Buy)   (2) 08/17/2021 Common Stock 157 $ 600 D  
Stock Option (Right to Buy)   (2) 08/17/2021 Common Stock 157 $ 600 D  
Stock Option (Right to Buy)   (3) 08/17/2021 Common Stock 100,277 $ 6 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Fuhrman Alan
C/O AMBIT BIOSCIENCES CORPORATION
11080 ROSELLE STREET
SAN DIEGO, CA 92121		       Chief Financial Officer  

Signatures

/s/ Alan Fuhrman 05/15/2013
**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) 25% of the shares subject to the option vest on October 11, 2011; thereafter 1/48th of the shares subject to the option vest each month following October 11, 2011, so that all of the shares subject to the option shall be vested October 11, 2014.
(2) 25% of the shares subject to the option vest on May 18, 2012; thereafter 1/48th of the shares subject to the option vest each month following May 18, 2012, so that all of the shares subject to the option shall be vested May 18, 2015.
(3) 1/48th of the shares subject to the option vest monthly beginning on December 1, 2012.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.