GEVO INC

CUSIP: 374396109 Class: CMN

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q3 2013
Shares 52,350 Value ($000) $101 Avg Close — Range —
Q2 2013
Shares 82,375 Value ($000) $167 Avg Close — Range —