PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

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

Q4 2016
Shares 320,597 Value ($000) $16,463 Avg Close $52.43 Range $43.10 - $59.65
Q3 2016
Shares 351,545 Value ($000) $21,061 Avg Close $57.54 Range $50.50 - $61.62
Q2 2016
Shares 356,232 Value ($000) $20,505 Avg Close $66.74 Range $55.07 - $82.06
Q1 2016
Shares 329,483 Value ($000) $25,400 Avg Close $64.57 Range $51.61 - $79.65
Q4 2015
Shares 319,682 Value ($000) $20,361 Avg Close $64.50 Range $58.84 - $69.48
Q3 2015
Shares 273,477 Value ($000) $18,323 Avg Close $71.25 Range $65.82 - $79.95
Q2 2015
Shares 169,154 Value ($000) $11,415 Avg Close $70.59 Range $65.84 - $79.00
Q1 2015
Shares 194,000 Value ($000) $13,580 Avg Close $67.69 Range $57.30 - $74.82
Q4 2014
Shares 206,114 Value ($000) $13,843 Avg Close $65.74 Range $54.97 - $73.46
Q3 2014
Shares 177,211 Value ($000) $12,228 Avg Close $78.24 Range $68.88 - $94.23
Q2 2014
Shares 185,655 Value ($000) $15,209 Avg Close $67.73 Range $58.06 - $83.06
Q1 2014
Shares 224,217 Value ($000) $15,173 Avg Close $74.38 Range $62.09 - $84.00
Q4 2013
Shares 345,336 Value ($000) $24,581 Avg Close $77.51 Range $65.52 - $89.97
Q3 2013
Shares 403,171 Value ($000) $30,798 Avg Close $69.23 Range $61.46 - $80.66
Q2 2013
Shares 282,000 Value ($000) $18,321,540 Avg Close $53.72 Range $43.62 - $67.40