MATTSON TECHNOLOGY INC

CUSIP: 577223100 Class: CMN

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

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

Q4 2014
Shares 435,895 Value ($000) $1,482 Avg Close — Range —
Q4 2013
Shares 95,087 Value ($000) $261 Avg Close — Range —
Q3 2013
Shares 403,369 Value ($000) $964 Avg Close — Range —