PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

Roundview Capital LLC's Holding History (CIK: 0001476804)

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

Q4 2016

Shares 5,335 Value ($000) $274 Avg Close $52.43 Range $43.10 - $59.65

Q3 2016

Shares 5,605 Value ($000) $336 Avg Close $57.54 Range $50.50 - $61.62

Q2 2016

Shares 5,335 Value ($000) $307 Avg Close $66.74 Range $55.07 - $82.06

Q1 2016

Shares 4,410 Value ($000) $340 Avg Close $64.57 Range $51.61 - $79.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	5,335	$274	$52.43	$43.10 - $59.65
Q3 2016	5,605	$336	$57.54	$50.50 - $61.62
Q2 2016	5,335	$307	$66.74	$55.07 - $82.06
Q1 2016	4,410	$340	$64.57	$51.61 - $79.65