RENTECH INC

CUSIP: 760112102 Class: CMN

FORT WASHINGTON INVESTMENT ADVISORS INC /OH/'s Holding History (CIK: 0001009016)

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

Q3 2013
Shares 1,009,216 Value ($000) $1,998 Avg Close — Range —
Q2 2013
Shares 2,226,146 Value ($000) $4,675 Avg Close — Range —