MATTERSIGHT CORP

CUSIP: 577097108 Class: COM

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

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

Q3 2016
Shares 4,200 Value ($000) $18 Avg Close — Range —
Q2 2016
Shares 9,900 Value ($000) $38 Avg Close — Range —
Q1 2015
Shares 2,081 Value ($000) $13 Avg Close — Range —