| DEAL NAME | Morgan Stanley Mortgage Loan Trust 2007-4SL |
| Closing Date | 2/28/2007 |
| Collateral Factor Date | 5/1/2008 |
| |
| Performance Summary | |
| Current Pool Factor | 73.93% |
| |
| Delinquency Status (*) | |
| 30+ Days | 19.86% |
| 60+ Days | 16.46% |
| 90+ Days | 13.35% |
| 120+ Days | 0.00% |
| |
| Bankruptcy | 0.00% |
| Foreclosure | 0.01% |
| REO | 0.04% |
| |
| Cumulative Net Loss | 8.64% |
| Loss Severity | 100.00% |
| |
| Prepayment Experience | |
| 1mo CPR | 31.66% |
| 3mo CPR | 23.77% |
| 6mo CPR | 21.03% |
| 9mo CPR | 21.11% |
| 12mo CPR | 21.00% |
| Life CPR | 21.15% |
|