Koppers Holdings Inc.

CUSIP: 50060p106 Class: COM

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

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

Q2 2018
Shares 14,300 Value ($000) $548 Avg Close — Range —
Q1 2018
Shares 22,200 Value ($000) $912 Avg Close — Range —
Q4 2017
Shares 31,100 Value ($000) $1,583 Avg Close — Range —