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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1297184	Amphastar Pharmaceuticals Inc.	AMPH	Pharmaceutical Preparations (2834)	330702205

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1047579	K Richard Prins	C/O Amphastar Pharmaceuticals, Inc. 11570 6Th Street Rancho Cucamonga CA 91730		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2014-08-15	1,400	$10.00	33,451	No	4	P	Direct
Common Stock	Acquisiton	2014-08-18	2,600	$10.03	36,051	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Direct
No	4	P	Direct

Footnotes

This includes 4,093 shares underlying deferred stock units that were granted on 12/20/2013 and fully vest on the first anniversary of the grant date. Such shares were previously reported on a separate line on the Reporting Person's Form 3 filed 6/24/14 but are now consolidated with the Reporting Person's other direct holdings for convenience.
The price reported in Column 4 is a weighted average price. These shares were acquired in multiple transactions at prices ranging from $10.01 to $10.05, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares acquired at each separate price within the ranges set forth in this footnote.