ENSCO PLC

CUSIP: G3157S106 Class: SHS CLASS A

GATEWAY INVESTMENT ADVISERS LLC's Holding History (CIK: 0001114618)

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

Q4 2015
Shares 26,373 Value ($000) $406 Avg Close — Range —
Q3 2015
Shares 54,259 Value ($000) $764 Avg Close — Range —
Q2 2015
Shares 54,041 Value ($000) $1,203 Avg Close — Range —
Q1 2015
Shares 56,667 Value ($000) $1,194 Avg Close — Range —
Q4 2014
Shares 56,566 Value ($000) $1,694 Avg Close — Range —
Q3 2014
Shares 64,042 Value ($000) $2,646 Avg Close — Range —
Q2 2014
Shares 63,938 Value ($000) $3,553 Avg Close — Range —
Q1 2014
Shares 59,719 Value ($000) $3,152 Avg Close — Range —
Q4 2013
Shares 79,430 Value ($000) $4,542 Avg Close — Range —
Q3 2013
Shares 79,756 Value ($000) $4,287 Avg Close — Range —
Q2 2013
Shares 78,505 Value ($000) $4,563 Avg Close — Range —