PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q2 2014

Shares 467,614 Value ($000) $38,307 Avg Close $67.73 Range $58.06 - $83.06

Q1 2014

Shares 478,330 Value ($000) $32,368,591 Avg Close $74.38 Range $62.09 - $84.00

Q3 2013

Shares 371,270 Value ($000) $28,361,316 Avg Close $69.23 Range $61.46 - $80.66

Q2 2013

Shares 815,320 Value ($000) $52,971,341 Avg Close $53.72 Range $43.62 - $67.40

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	467,614	$38,307	$67.73	$58.06 - $83.06
Q1 2014	478,330	$32,368,591	$74.38	$62.09 - $84.00
Q3 2013	371,270	$28,361,316	$69.23	$61.46 - $80.66
Q2 2013	815,320	$52,971,341	$53.72	$43.62 - $67.40