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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
1611158	Applied Physics & Chemistry Laboratories, Inc.	13760 Magnolia Avenue Chino CA 91710		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2015-12-09	26,319	$14.29	7,498,575	No	4	S	Direct
Common Stock	Disposition	2015-12-10	21,915	$14.32	7,476,660	No	4	S	Direct
Common Stock	Disposition	2015-12-11	15,066	$14.05	7,461,594	No	4	S	Direct

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

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 4, 2015.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.09 to $14.74 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 sold at each separate price within the ranges set forth in footnotes (2), (3) and (4) to this Form 4.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.205 to $14.93, inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.825 to $14.35, inclusive.