| SC 13G/A | 2008-02-08 | BlackRock Inc. | RENTECH INC /CO/ | 24,601,172 | 14.9% | EDGAR |
| SC 13D | 2007-12-12 | ASSET MANAGERS INTERNATIONAL LTD. | RENTECH INC /CO/ | 9,626,785 | 5.8% | EDGAR |
| SC 13G/A | 2007-09-10 | WELLINGTON MANAGEMENT CO LLP | RENTECH INC /CO/ | 16,427,300 | 10.0% | EDGAR |
| SC 13G/A | 2007-02-14 | WELLINGTON MANAGEMENT CO LLP | RENTECH INC /CO/ | 10,521,400 | 7.4% | EDGAR |
| SC 13G/A | 2007-02-13 | BlackRock Inc. | RENTECH INC /CO/ | 17,591,248 | 12.4% | EDGAR |
| SC 13G/A | 2007-02-08 | M.A.G. Capital, LLC | RENTECH INC /CO/ | 345,445 | 0.2% | EDGAR |
| SC 13G | 2006-10-10 | BlackRock Inc. | RENTECH INC /CO/ | 17,565,000 | 12.4% | EDGAR |
| SC 13G/A | 2006-09-11 | WELLINGTON MANAGEMENT CO LLP | RENTECH INC /CO/ | 10,020,400 | 7.1% | EDGAR |
| SC 13G | 2006-05-09 | MERRILL LYNCH ASSET MANAGEMENT INC | RENTECH INC /CO/ | 14,479,000 | 10.7% | EDGAR |
| SC 13G/A | 2006-05-02 | M.A.G. Capital, LLC | RENTECH INC /CO/ | 704,104 | 0.6% | EDGAR |
| SC 13G/A | 2006-02-14 | WELLINGTON MANAGEMENT CO LLP | RENTECH INC /CO/ | 13,776,400 | 12.1% | EDGAR |
| SC 13G | 2005-10-11 | WELLINGTON MANAGEMENT CO LLP | RENTECH INC /CO/ | 13,952,400 | 13.0% | EDGAR |
| SC 13G | 2005-05-09 | M.A.G. Capital, LLC | RENTECH INC /CO/ | 811,787 | 0.9% | EDGAR |
| SC 13G/A | 2004-02-13 | SECURITY MANAGEMENT CO LLC /KS/ | RENTECH INC /CO/ | 3,940,300 | 4.8% | EDGAR |
| SC 13D/A | 2003-05-28 | FOREST OIL CORP | RENTECH INC /CO/ | - | - | EDGAR |
| SC 13G | 2003-02-14 | SECURITY MANAGEMENT CO LLC /KS/ | RENTECH INC /CO/ | 3,871,300 | 5.5% | EDGAR |
| SC 13D/A | 2000-08-21 | - | - | - | - | EDGAR |
| SC 13D/A | 2000-06-21 | - | - | - | - | EDGAR |
| SC 13D | 2000-03-31 | ANSCHUTZ PHILIP F | RENTECH INC /CO/ | 3,755,000 | 6.1% | EDGAR |
| SC 13D | 2000-03-31 | ANSCHUTZ PHILIP F | RENTECH INC /CO/ | 3,755,000 | 6.1% | EDGAR |