| DEAL NAME | Morgan Stanley Mortgage Loan Trust 2007-4SL |
| Closing Date | 2/28/2007 |
| Collateral Factor Date | 3/1/2008 |
| |
| Performance Summary | |
| Current Pool Factor | 78.02% |
| |
| Delinquency Status (*) | |
| 30+ Days | 17.83% |
| 60+ Days | 14.29% |
| 90+ Days | 11.60% |
| 120+ Days | 0.00% |
| |
| Bankruptcy | 0.00% |
| Foreclosure | 0.00% |
| REO | 0.12% |
| |
| Cumulative Net Loss | 5.66% |
| Loss Severity | 100.00% |
| |
| Prepayment Experience | |
| 1mo CPR | 16.27% |
| 3mo CPR | 18.87% |
| 6mo CPR | 18.84% |
| 9mo CPR | 19.71% |
| 12mo CPR | 20.12% |
| Life CPR | 20.17% |
|