| DEAL NAME | Morgan Stanley Mortgage Loan Trust 2007-4SL |
| Closing Date | 2/28/2007 |
| Collateral Factor Date | 8/1/2008 |
| |
| Performance Summary | |
| Current Pool Factor | 67.14% |
| |
| Delinquency Status (*) | |
| 30+ Days | 21.62% |
| 60+ Days | 18.31% |
| 90+ Days | 15.13% |
| 120+ Days | 0.00% |
| |
| Bankruptcy | 0.00% |
| Foreclosure | 0.00% |
| REO | 0.00% |
| |
| Cumulative Net Loss | 14.34% |
| Loss Severity | 100.00% |
| |
| Prepayment Experience | |
| 1mo CPR | 42.72% |
| 3mo CPR | 31.69% |
| 6mo CPR | 27.84% |
| 9mo CPR | 24.76% |
| 12mo CPR | 23.90% |
| Life CPR | 23.02% |
|