WESCO INTL INC

Ticker: WCC CUSIP: 95082P105 Class: EQTY

EMERALD ADVISERS, LLC's Holding History (CIK: 0001015083)

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

Q2 2015

Shares 16,259 Value ($000) $1,116 Avg Close $69.71 Range $64.66 - $72.53

Q1 2015

Shares 34,619 Value ($000) $2,451 Avg Close $67.30 Range $63.56 - $75.25

Q4 2014

Shares 296,504 Value ($000) $22,597 Avg Close $76.51 Range $67.05 - $84.50

Q3 2014

Shares 343,592 Value ($000) $26,890 Avg Close $80.41 Range $76.00 - $85.85

Q2 2014

Shares 331,350 Value ($000) $28,622 Avg Close $84.84 Range $81.16 - $90.48

Q1 2014

Shares 270,891 Value ($000) $22,544 Avg Close $83.35 Range $76.34 - $92.11

Q4 2013

Shares 280,812 Value ($000) $25,574 Avg Close $81.07 Range $71.61 - $89.07

Q3 2013

Shares 244,012 Value ($000) $18,674 Avg Close $72.11 Range $63.42 - $78.07

Q2 2013

Shares 418,811 Value ($000) $28,462 Avg Close $69.34 Range $62.47 - $77.00

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	16,259	$1,116	$69.71	$64.66 - $72.53
Q1 2015	34,619	$2,451	$67.30	$63.56 - $75.25
Q4 2014	296,504	$22,597	$76.51	$67.05 - $84.50
Q3 2014	343,592	$26,890	$80.41	$76.00 - $85.85
Q2 2014	331,350	$28,622	$84.84	$81.16 - $90.48
Q1 2014	270,891	$22,544	$83.35	$76.34 - $92.11
Q4 2013	280,812	$25,574	$81.07	$71.61 - $89.07
Q3 2013	244,012	$18,674	$72.11	$63.42 - $78.07
Q2 2013	418,811	$28,462	$69.34	$62.47 - $77.00