AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

Spark Investment Management LLC's Holding History (CIK: 0001554871)

Note: Option positions (PUT/CALL) are excluded.

Q4 2015

Shares 83,900 Value ($000) $1,193 Avg Close $13.21 Range $10.57 - $15.84

Q3 2015

Shares 119,200 Value ($000) $1,391 Avg Close $15.00 Range $10.61 - $18.30

Q2 2015

Shares 119,200 Value ($000) $2,094 Avg Close $15.59 Range $13.55 - $18.25

Q1 2015

Shares 119,200 Value ($000) $1,780 Avg Close $13.37 Range $11.12 - $15.79

Q4 2014

Shares 37,334 Value ($000) $432 Avg Close $10.89 Range $9.76 - $12.46

Q3 2014

Shares 21,200 Value ($000) $246 Avg Close $10.42 Range $8.32 - $12.52

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	83,900	$1,193	$13.21	$10.57 - $15.84
Q3 2015	119,200	$1,391	$15.00	$10.61 - $18.30
Q2 2015	119,200	$2,094	$15.59	$13.55 - $18.25
Q1 2015	119,200	$1,780	$13.37	$11.12 - $15.79
Q4 2014	37,334	$432	$10.89	$9.76 - $12.46
Q3 2014	21,200	$246	$10.42	$8.32 - $12.52