PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

Beech Hill Advisors, Inc.'s Holding History (CIK: 0001356202)

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

Q1 2014

Shares 4,400 Value ($000) $298 Avg Close $74.38 Range $62.09 - $84.00

Q4 2013

Shares 6,425 Value ($000) $457 Avg Close $77.51 Range $65.52 - $89.97

Q3 2013

Shares 11,900 Value ($000) $909 Avg Close $69.23 Range $61.46 - $80.66

Q2 2013

Shares 5,350 Value ($000) $348 Avg Close $53.72 Range $43.62 - $67.40

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	4,400	$298	$74.38	$62.09 - $84.00
Q4 2013	6,425	$457	$77.51	$65.52 - $89.97
Q3 2013	11,900	$909	$69.23	$61.46 - $80.66
Q2 2013	5,350	$348	$53.72	$43.62 - $67.40