ENSCO PLC

CUSIP: G3157S106 Class: SHS CLASS A

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

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

Q3 2016
Shares 143,340 Value ($000) $1,218 Avg Close — Range —
Q2 2016
Shares 143,340 Value ($000) $1,392 Avg Close — Range —
Q1 2016
Shares 143,340 Value ($000) $1,486 Avg Close — Range —
Q4 2015
Shares 143,340 Value ($000) $2,206 Avg Close — Range —
Q3 2015
Shares 143,340 Value ($000) $2,018 Avg Close — Range —
Q2 2015
Shares 143,340 Value ($000) $3,192 Avg Close — Range —
Q1 2015
Shares 143,340 Value ($000) $3,020 Avg Close — Range —
Q4 2014
Shares 143,340 Value ($000) $4,293 Avg Close — Range —
Q3 2014
Shares 143,340 Value ($000) $5,921 Avg Close — Range —
Q2 2014
Shares 143,340 Value ($000) $7,965 Avg Close — Range —
Q1 2014
Shares 143,340 Value ($000) $7,565 Avg Close — Range —
Q4 2013
Shares 150,507 Value ($000) $8,606 Avg Close — Range —
Q3 2013
Shares 150,507 Value ($000) $8,090 Avg Close — Range —
Q2 2013
Shares 150,507 Value ($000) $8,747 Avg Close — Range —