MATTSON TECHNOLOGY INC

CUSIP: 577223100 Class: CMN

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q1 2016
Shares 557,726 Value ($000) $2,036 Avg Close — Range —
Q4 2015
Shares 557,726 Value ($000) $1,969 Avg Close — Range —
Q1 2014
Shares 244,200 Value ($000) $567 Avg Close — Range —