EXONE CO

CUSIP: 302104104 Class: COM

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

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

Q4 2013
Shares 11,151 Value ($000) $674 Avg Close — Range —
Q2 2013
Shares 6,620 Value ($000) $409 Avg Close — Range —