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 *
  ZASLOFF MICHAEL A
 2. Date of Event Requiring Statement (Month/Day/Year)
06/24/2014		 3. Issuer Name and Ticker or Trading Symbol
Amphastar Pharmaceuticals, Inc. [AMPH]
(Last)
(First)
(Middle)
C/O AMPHASTAR PHARMACEUTICALS, INC., 11570 6TH STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

RANCHO CUCAMONGA, CA 91730		 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 8,682
D
 
Common Stock 5,457 (1)
D
 

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)   (2) 12/18/2015 Common Stock 38,462 $ 11.68 D  
Stock Option (Right to Buy)   (2) 10/03/2016 Common Stock 10,381 $ 15.23 D  
Stock Option (Right to Buy)   (2) 12/10/2016 Common Stock 37,994 $ 14.23 D  
Stock Option (Right to Buy)   (2) 12/15/2017 Common Stock 78,624 $ 10.77 D  
Stock Option (Right to Buy)   (3) 12/20/2018 Common Stock 29,278 $ 14.66 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
ZASLOFF MICHAEL A
C/O AMPHASTAR PHARMACEUTICALS, INC.
11570 6TH STREET
RANCHO CUCAMONGA, CA 91730		   X      

Signatures

/s/Michael A. Zasloff, by Power of Attorney 06/24/2014
**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) This represents deferred stock units that were granted on 12/20/2013 and fully vest on the first anniversary of the grant date.
(2) This option is fully vested and exercisable.
(3) This option was granted on 12/20/2013 and fully vests on the first anniversary of the grant date, subject to the reporting person's continued service on the Board of Directors of the Issuer through the vesting date.

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.