| DEAL NAME | Morgan Stanley Mortgage Loan Trust 2007-4SL |
| Closing Date | 2/28/2007 |
| Collateral Factor Date | 12/1/2007 |
| |
| Performance Summary | |
| Current Pool Factor | 82.29% |
| |
| Delinquency Status (*) | |
| 30+ Days | 13.22% |
| 60+ Days | 9.78% |
| 90+ Days | 7.52% |
| 120+ Days | 0.00% |
| |
| Bankruptcy | 0.00% |
| Foreclosure | 0.00% |
| REO | 0.00% |
| |
| Cumulative Net Loss | 2.86% |
| Loss Severity | 100.00% |
| |
| Prepayment Experience | |
| 1mo CPR | 14.13% |
| 3mo CPR | 18.81% |
| 6mo CPR | 20.12% |
| 9mo CPR | 20.53% |
| Life CPR | 20.55% |
|