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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.	C/O Amphastar Pharmaceuticals, Inc. 11570 6Th Street Rancho Cucamonga CA 91730		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	2018-12-11	63,504	$21.43	7,398,090	No	4	S	Direct
Common Stock	Disposition	2018-12-11	3,253	$22.13	7,394,837	No	4	S	Direct
Common Stock	Disposition	2018-12-12	37,469	$21.21	7,357,368	No	4	S	Direct
Common Stock	Disposition	2018-12-13	29,689	$20.99	7,327,679	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
No	4	S	Direct

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.055 to $22.05, inclusive. The reporting persons undertake 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 purchased at each separate price within the ranges set forth in footnotes (1), (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 $22.055 to $22.27, inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.93 to $21.54, inclusive.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.83 to $21.28, inclusive.