AXCELIS TECHNOLOGIES INC

CUSIP: 54540109 Class: CS

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q2 2014
Shares 1,331 Value ($000) $3 Avg Close — Range —
Q1 2014
Shares 4,331 Value ($000) $9 Avg Close — Range —
Q4 2013
Shares 7,431 Value ($000) $18 Avg Close — Range —
Q3 2013
Shares 2,907 Value ($000) $6 Avg Close — Range —