COGDELL SPENCER INC

CUSIP: 19238U107 Class: COMMON STOCK

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q4 2011
Shares 7,000 Value ($000) $30 Avg Close — Range —
Q3 2011
Shares 7,000 Value ($000) $26 Avg Close — Range —
Q2 2011
Shares 7,000 Value ($000) $42 Avg Close — Range —
Q1 2011
Shares 7,000 Value ($000) $42 Avg Close — Range —
Q4 2010
Shares 7,000 Value ($000) $41 Avg Close — Range —
Q1 2010
Shares 7,000 Value ($000) $52 Avg Close — Range —