PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

GREENLEAF TRUST's Holding History (CIK: 0001162170)

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

Q1 2018

Shares 632 Value ($000) $74 Avg Close $113.00 Range $100.05 - $126.95

Q4 2017

Shares 632 Value ($000) $65 Avg Close $89.74 Range $79.06 - $109.10

Q3 2017

Shares 632 Value ($000) $51 Avg Close $72.28 Range $66.85 - $80.40

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	632	$74	$113.00	$100.05 - $126.95
Q4 2017	632	$65	$89.74	$79.06 - $109.10
Q3 2017	632	$51	$72.28	$66.85 - $80.40