ALTAIR ENGR INC

CUSIP: 021369103 Class: Common Stock

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

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

Q3 2019
Shares 130,575 Value ($000) $4,521 Avg Close — Range —
Q2 2019
Shares 129,595 Value ($000) $5,234 Avg Close — Range —
Q1 2019
Shares 5,900 Value ($000) $217 Avg Close — Range —