GENTEX CORP

Ticker: GNTX CUSIP: 371901109 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q2 2014

Shares 301,958 Value ($000) $8,784 Avg Close $14.60 Range $13.90 - $15.88

Q1 2014

Shares 1,073,525 Value ($000) $33,848 Avg Close $15.95 Range $14.79 - $17.20

Q4 2013

Shares 2,111,415 Value ($000) $69,634 Avg Close $14.65 Range $12.31 - $17.07

Q3 2013

Shares 1,778,625 Value ($000) $45,515 Avg Close $11.86 Range $10.64 - $13.13

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	301,958	$8,784	$14.60	$13.90 - $15.88
Q1 2014	1,073,525	$33,848	$15.95	$14.79 - $17.20
Q4 2013	2,111,415	$69,634	$14.65	$12.31 - $17.07
Q3 2013	1,778,625	$45,515	$11.86	$10.64 - $13.13