MGC DIAGNOSTICS CORP

CUSIP: 552768103 Class: COM

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q1 2014
Shares 51,800 Value ($000) $590 Avg Close — Range —
Q4 2013
Shares 106,901 Value ($000) $1,353 Avg Close — Range —
Q3 2013
Shares 33,195 Value ($000) $363 Avg Close — Range —
Q2 2013
Shares 29,288 Value ($000) $245 Avg Close — Range —