BARRETT BILL CORP

CUSIP: 06846N104 Class: COMMON STOCK

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q3 2014
Shares 20,000 Value ($000) $512 Avg Close — Range —
Q2 2014
Shares 20,000 Value ($000) $536 Avg Close — Range —
Q1 2014
Shares 20,000 Value ($000) $512 Avg Close — Range —
Q4 2013
Shares 302,291 Value ($000) $8,095 Avg Close — Range —
Q2 2013
Shares 173,445 Value ($000) $3,507 Avg Close — Range —