PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

BRADLEY FOSTER & SARGENT INC/CT's Holding History (CIK: 0001015086)

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

Q3 2018

Shares 5,550 Value ($000) $898 Avg Close $141.47 Range $115.95 - $166.60

Q2 2018

Shares 7,755 Value ($000) $922 Avg Close $122.45 Range $111.20 - $136.40

Q1 2018

Shares 7,755 Value ($000) $912 Avg Close $113.00 Range $100.05 - $126.95

Q4 2017

Shares 7,755 Value ($000) $799 Avg Close $89.74 Range $79.06 - $109.10

Q3 2017

Shares 7,755 Value ($000) $623 Avg Close $72.28 Range $66.85 - $80.40

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	5,550	$898	$141.47	$115.95 - $166.60
Q2 2018	7,755	$922	$122.45	$111.20 - $136.40
Q1 2018	7,755	$912	$113.00	$100.05 - $126.95
Q4 2017	7,755	$799	$89.74	$79.06 - $109.10
Q3 2017	7,755	$623	$72.28	$66.85 - $80.40