AMTECH SYS INC

Ticker: ASYS CUSIP: 032332504 Class: COM PAR $0.01N

ARDSLEY ADVISORY PARTNERS LP's Holding History (CIK: 0000900529)

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

Q4 2014

Shares 28,400 Value ($000) $290 Avg Close $9.39 Range $7.52 - $11.15

Q3 2014

Shares 86,600 Value ($000) $927 Avg Close $10.51 Range $8.47 - $12.37

Q1 2014

Shares 149,600 Value ($000) $1,821 Avg Close $10.42 Range $6.87 - $13.74

Q4 2013

Shares 45,100 Value ($000) $314 Avg Close $7.78 Range $6.19 - $9.21

Q3 2013

Shares 137,600 Value ($000) $1,004 Avg Close $6.68 Range $5.44 - $7.70

Q2 2013

Shares 87,500 Value ($000) $557 Avg Close $4.48 Range $3.21 - $7.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2014	28,400	$290	$9.39	$7.52 - $11.15
Q3 2014	86,600	$927	$10.51	$8.47 - $12.37
Q1 2014	149,600	$1,821	$10.42	$6.87 - $13.74
Q4 2013	45,100	$314	$7.78	$6.19 - $9.21
Q3 2013	137,600	$1,004	$6.68	$5.44 - $7.70
Q2 2013	87,500	$557	$4.48	$3.21 - $7.93