CODEXIS INC

Ticker: CDXS CUSIP: 192005106 Class: Common Stock

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

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

Q1 2013
Shares 20,000 Value ($000) $48 Avg Close $2.34 Range $2.00 - $2.67
Q4 2012
Shares 20,000 Value ($000) $44 Avg Close — Range —
Q3 2012
Shares 20,000 Value ($000) $61 Avg Close — Range —
Q2 2012
Shares 20,000 Value ($000) $74 Avg Close — Range —
Q1 2012
Shares 20,000 Value ($000) $73 Avg Close — Range —
Q4 2011
Shares 20,000 Value ($000) $106 Avg Close — Range —
Q3 2011
Shares 20,000 Value ($000) $91 Avg Close — Range —
Q2 2011
Shares 20,000 Value ($000) $193 Avg Close — Range —
Q1 2011
Shares 20,000 Value ($000) $236 Avg Close — Range —
Q4 2010
Shares 20,000 Value ($000) $212 Avg Close — Range —