ICON PLC

Ticker: ICLR CUSIP: G4705A100 Class: SHS

MAINSTAY CAPITAL MANAGEMENT LLC /ADV's Holding History (CIK: 0001127612)

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

Q3 2018

Shares 210 Value ($000) $32 Avg Close $143.37 Range $130.22 - $154.10

Q2 2018

Shares 210 Value ($000) $28 Avg Close $124.66 Range $110.21 - $138.17

Q1 2018

Shares 210 Value ($000) $24 Avg Close $114.70 Range $101.22 - $124.65

Q4 2017

Shares 210 Value ($000) $24 Avg Close $115.23 Range $110.54 - $124.48

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	210	$32	$143.37	$130.22 - $154.10
Q2 2018	210	$28	$124.66	$110.21 - $138.17
Q1 2018	210	$24	$114.70	$101.22 - $124.65
Q4 2017	210	$24	$115.23	$110.54 - $124.48