| DEAL NAME | Morgan Stanley Mortgage Loan Trust 2007-4SL |
| Closing Date | 2/28/2007 |
| Collateral Factor Date | 7/1/2008 |
| |
| Performance Summary | |
| Current Pool Factor | 70.36% |
| |
| Delinquency Status (*) | |
| 30+ Days | 22.21% |
| 60+ Days | 18.88% |
| 90+ Days | 15.47% |
| 120+ Days | 0.00% |
| |
| Bankruptcy | 0.00% |
| Foreclosure | 0.00% |
| REO | 0.11% |
| |
| Cumulative Net Loss | 11.33% |
| Loss Severity | 100.00% |
| |
| Prepayment Experience | |
| 1mo CPR | 25.56% |
| 3mo CPR | 27.54% |
| 6mo CPR | 24.28% |
| 9mo CPR | 22.31% |
| 12mo CPR | 22.19% |
| Life CPR | 21.67% |
|