| DEAL NAME | Morgan Stanley Mortgage Loan Trust 2007-4SL |
| Closing Date | 2/28/2007 |
| Collateral Factor Date | 12/1/2008 |
| |
| Performance Summary | |
| Current Pool Factor | 60.72% |
| |
| Delinquency Status (*) | |
| 30+ Days | 29.91% |
| 60+ Days | 24.33% |
| 90+ Days | 20.95% |
| 120+ Days | 0.00% |
| |
| Bankruptcy | 0.00% |
| Foreclosure | 0.00% |
| REO | 0.00% |
| |
| Cumulative Net Loss | 19.79% |
| Loss Severity | 99.68% |
| |
| Prepayment Experience | |
| 1mo CPR | 21.70% |
| 3mo CPR | 26.67% |
| 6mo CPR | 28.83% |
| 9mo CPR | 28.09% |
| 12mo CPR | 25.89% |
| Life CPR | 23.51% |
|