COHERENT INC

CUSIP: 192479103 Class: COM

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

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

Q4 2017
Shares 25,496 Value ($000) $7,195 Avg Close — Range —
Q3 2017
Shares 38,121 Value ($000) $8,965 Avg Close — Range —
Q2 2017
Shares 3,031 Value ($000) $682 Avg Close — Range —
Q1 2017
Shares 1,051 Value ($000) $216 Avg Close — Range —