ALTAIR ENGR INC

CUSIP: 021369103 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q3 2019
Shares 13,000 Value ($000) $450 Avg Close — Range —
Q2 2019
Shares 268,982 Value ($000) $10,864 Avg Close — Range —
Q1 2019
Shares 409,098 Value ($000) $15,059 Avg Close — Range —
Q4 2018
Shares 466,729 Value ($000) $12,872 Avg Close — Range —
Q3 2018
Shares 787,441 Value ($000) $34,214 Avg Close — Range —
Q2 2018
Shares 832,325 Value ($000) $28,449 Avg Close — Range —
Q1 2018
Shares 669,210 Value ($000) $20,986 Avg Close — Range —
Q4 2017
Shares 547,632 Value ($000) $13,099 Avg Close — Range —