PROTO LABS INC

Ticker: PRLB CUSIP: 743713109 Class: EQTY

STATE OF MICHIGAN RETIREMENT SYSTEM's Holding History (CIK: 0000762152)

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

Q3 2014
Shares 49,000 Value ($000) $3,381 Avg Close $78.24 Range $68.88 - $94.23
Q2 2014
Shares 65,000 Value ($000) $5,325 Avg Close $67.73 Range $58.06 - $83.06