ICON PLC

Ticker: ICLR CUSIP: G4705A100 Class: SHS

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

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

Q3 2016

Shares 5,000 Value ($000) $387 Avg Close $75.14 Range $69.05 - $79.61

Q1 2016

Shares 3,500 Value ($000) $263 Avg Close $70.08 Range $64.08 - $77.79

Q4 2015

Shares 5,000 Value ($000) $389 Avg Close $71.41 Range $63.20 - $78.88

Q4 2013

Shares 5,000 Value ($000) $202 Avg Close $39.76 Range $36.42 - $44.23

Q3 2013

Shares 7,500 Value ($000) $307 Avg Close $38.50 Range $35.50 - $41.29

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	5,000	$387	$75.14	$69.05 - $79.61
Q1 2016	3,500	$263	$70.08	$64.08 - $77.79
Q4 2015	5,000	$389	$71.41	$63.20 - $78.88
Q4 2013	5,000	$202	$39.76	$36.42 - $44.23
Q3 2013	7,500	$307	$38.50	$35.50 - $41.29