BILL BARRETT CORP

CUSIP: 06846NAC8 Class: CORP

ADVENT CAPITAL MANAGEMENT /DE/'s Holding History (CIK: 0001097278)

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

Q1 2014
Shares 1,750,000 Value ($000) $1,897 Avg Close — Range —
Q4 2013
Shares 1,750,000 Value ($000) $1,881 Avg Close — Range —
Q3 2013
Shares 1,750,000 Value ($000) $1,785 Avg Close — Range —
Q2 2013
Shares 1,750,000 Value ($000) $1,811 Avg Close — Range —