ENSCO PLC

CUSIP: G3157S106 Class: SHS CLASS A

SECURITY NATIONAL BANK OF SIOUX CITY IOWA /IA/'s Holding History (CIK: 0000894309)

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

Q3 2014
Shares 21,068 Value ($000) $870 Avg Close — Range —
Q2 2014
Shares 20,603 Value ($000) $1,145 Avg Close — Range —
Q1 2014
Shares 20,168 Value ($000) $1,065 Avg Close — Range —
Q4 2013
Shares 18,798 Value ($000) $1,075 Avg Close — Range —
Q3 2013
Shares 15,588 Value ($000) $838 Avg Close — Range —
Q2 2013
Shares 14,148 Value ($000) $822 Avg Close — Range —