POWER SOLUTIONS INTL INC

Ticker: PSIX CUSIP: 73933G202 Class: Common Stock

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

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

Q2 2015

Shares 30,000 Value ($000) $1,621 Avg Close $58.85 Range $49.28 - $69.79

Q3 2013

Shares 15,000 Value ($000) $887 Avg Close $48.66 Range $33.00 - $59.26

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	30,000	$1,621	$58.85	$49.28 - $69.79
Q3 2013	15,000	$887	$48.66	$33.00 - $59.26