SOUTHWESTERN ENERGY CO

CUSIP: 845467109 Class: Common Stock

TRILLIUM ASSET MANAGEMENT, LLC's Holding History (CIK: 0000884541)

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

Q3 2015
Shares 132,089 Value ($000) $1,676 Avg Close — Range —
Q2 2015
Shares 133,723 Value ($000) $3,040 Avg Close — Range —
Q1 2015
Shares 134,182 Value ($000) $3,112 Avg Close — Range —
Q4 2014
Shares 123,751 Value ($000) $3,377 Avg Close — Range —
Q3 2014
Shares 131,448 Value ($000) $4,594 Avg Close — Range —
Q2 2014
Shares 125,478 Value ($000) $5,708 Avg Close — Range —