MATTSON TECHNOLOGY INC

CUSIP: 577223100 Class: CMN

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q1 2016
Shares 3,458,458 Value ($000) $12,623 Avg Close — Range —
Q4 2015
Shares 3,466,909 Value ($000) $12,238 Avg Close — Range —
Q3 2015
Shares 3,472,942 Value ($000) $8,092 Avg Close — Range —
Q2 2015
Shares 1,965,239 Value ($000) $6,584 Avg Close — Range —
Q1 2015
Shares 1,489,620 Value ($000) $5,869 Avg Close — Range —