NORTH ATLANTIC DRILLING LTD

CUSIP: G6613P202 Class: Stock

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

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

Q2 2015
Shares 27,780 Value ($000) $33 Avg Close — Range —
Q1 2015
Shares 273,192 Value ($000) $317 Avg Close — Range —
Q4 2014
Shares 141,214 Value ($000) $230 Avg Close — Range —
Q3 2014
Shares 2,406 Value ($000) $16 Avg Close — Range —
Q2 2014
Shares 3,046 Value ($000) $32 Avg Close — Range —
Q1 2014
Shares 2,969 Value ($000) $26 Avg Close — Range —