BOARDWALK PIPELINE PARTNERS

CUSIP: 096627104 Class: UT LTD PARTNER

COMERICA BANK's Holding History (CIK: 0000901541)

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

Q3 2013
Shares 16,083 Value ($000) $489 Avg Close — Range —
Q2 2013
Shares 19,475 Value ($000) $588 Avg Close — Range —