PERFORMANCE TECHNOLOGIES INC

CUSIP: 71376K102 Class: COM

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

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

Q4 2013
Shares 53,391 Value ($000) $200 Avg Close — Range —
Q3 2013
Shares 66,000 Value ($000) $190 Avg Close — Range —