SOUTHWESTERN ENERGY CO

CUSIP: 845467109 Class: Common Stock

AMARILLO NATIONAL BANK's Holding History (CIK: 0001053013)

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

Q1 2015
Shares 11,065 Value ($000) $257 Avg Close — Range —
Q4 2014
Shares 19,744 Value ($000) $539 Avg Close — Range —
Q3 2014
Shares 12,310 Value ($000) $430 Avg Close — Range —
Q2 2014
Shares 9,742 Value ($000) $443 Avg Close — Range —