WaMu Mortgage Pass Through Certs., Series 2001-S10 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 929227*DH6; Class 1A2: 929227*DJ2; Class 1A3: 929227*DK9; Class 1A4: 929227*DL7; Class 1A5: 929227*DM5; Class 1A6: 929227*DN3; Class 1A7: 929227*DP8; Class 1A8: 929227*DQ6; Class 1A9: 929227*DR4; Class 1A10: 929227*DS2; Class 1A11: 929227*DT0; Class 1A12: 929227*DU7; Class 2A1: 929227*DV5; Class 2A2: 929227*DW3; Class 2A3: 929227*DX1; Class 1P: 929227*DY9; Class 2P: 929227*DZ6; Class B1: 929227*EA0; Class B2: 929227*EB8; Class B3: 929227*EC6; Class R: 929227*ED4; Class B4: 929227*EE2; Class B5: 929227*EF9; Class B6: 929227*EG7
Startup/Issue Date: 10/25/2001
WaMu Mortgage Pass Through Certs., Series 2001-S11 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 939335*XA8; Class A2: 939335*XB6; Class A3: 939335*XC4; Class A4: 939335*XD2; Class A5: 939335*XE0; Class A6: 939335*XF7; Class A7: 939335*XG5; Class A8: 939335*XH3; Class A9: 939335*XJ9; Class A10: 939335*XK6; Class A11: 939335*XL4; Class A12: 939335*XM2; Class A13: 939335*XN0; Class A14: 939335*XP5; Class A15: 939335*XQ3; Class A16: 939335*XR1; Class A17: 939335*XS9; Class A18: 939335*XT7; Class A19: 939335*XU4; Class A20: 939335*XV2; Class A21: 939335*XW0; Class P: 939335*XX8; Class B1: 939335*XY6; Class B2: 939335*XZ3; Class B3: 939335*YA7; Class R: 939335*YB5; Class B4: xBCC05WBF9; Class B5: xBCC05WBG7; Class B6: XBCC05WBH5
Startup/Issue Date: 11/29/2001
WaMu Mortgage Pass Through Certs., Series 2001-S11 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 939335*XA8; Class A2: 939335*XB6; Class A3: 939335*XC4; Class A4: 939335*XD2; Class A5: 939335*XE0; Class A6: 939335*XF7; Class A7: 939335*XG5; Class A8: 939335*XH3; Class A9: 939335*XJ9; Class A10: 939335*XK6; Class A11: 939335*XL4; Class A12: 939335*XM2; Class A13: 939335*XN0; Class A14: 939335*XP5; Class A15: 939335*XQ3; Class A16: 939335*XR1; Class A17: 939335*XS9; Class A18: 939335*XT7; Class A19: 939335*XU4; Class A20: 939335*XV2; Class A21: 939335*XW0; Class P: 939335*XX8; Class B1: 939335*XY6; Class B2: 939335*XZ3; Class B3: 939335*YA7; Class R: 939335*YB5; Class B4: xBCC05WBF9; Class B4: xBCC05WBG7; Class B6: XBCC05WBH5
Startup/Issue Date: 11/29/2001
Washington Mutual Mortgage Securities Corp., Series 2001-8 Intermediate Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*KP9; Class 1A2: 939335*KQ7; Class 1A3: 939335*KR5; Class 1A4: 939335*KS3; Class 1A5: 939335*KT1; Class 1A6: 939335*KU8; Class 1A7: 939335*KV6; Class 1A8: 939335*KW4; Class 1A9: 939335*KX2; Class 1A10: 939335*KY0; Class 1A11: 939335*KZ7; Class 2A1: 939335*LA1; Class 2A2: 939335*LB9; Class 2A3: 939335*LC7; Class 3A1: 939335*LD5; Class 3A2: 939335*LE3; Class 3A3: 939335*LF0; Class 3A4: 939335*LG8; Class 3A5: 939335*LH6; Class 3A6: 939335*LJ2; Class 3A7: 939335*LK9; Class 3A8: 939335*LL7; Class 3A9: 939335*LM5; Class 3A10: 939335*LN3; Class 3A11: 939335*LP8; Class 3A12: 939335*LQ6; Class 3A13: 939335*LR4; Class 3A14: 939335*LS2; Class 3A15: 939335*LT0; Class 3A16: 939335*LU7; Class 3A17: 939335*LV5; Class 3A18: 939335*LW3; Class 3A19: 939335*LX1; Class 3A20: 939335*LY9; Class 3A21: 939335*LZ6; Class 3A22: 939335*MA0; Class 3A23: 939335*MB8; Class 3A24: 939335*MC6; Class 3A25: 939335*MD4; Class 3A26: 939335*ME2; Class 3A27: 939335*MF9; Class 3A28: 939335*MG7; Class 3A29: 939335*MH5; Class 3A30: 939335*MJ1; Class 3A31: 939335*MK8; Class 3A32: 939335*ML6; Class AX: 939335*MM4; Class 2X: 939335*MN2; Class AP: 939335*MP7; Class 2P: 939335*MQ5; Class CB1: 939335*MR3; Class CB2: 939335*MS1; Class CB3: 939335*MT9; Class R1: 939335*MU6; Class R2: 939335*MV4; Class R3: 939335*MW2; Class CB4: 939335*NK7; Class CB5: 939335*NM3; Class CB6: 939335*NP6
Startup/Issue Date: 05/25/2001
Washington Mutual Mortgage Securities Corp., Series 2001-8 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*KP9; Class 1A2: 939335*KQ7; Class 1A3: 939335*KR5; Class 1A4: 939335*KS3; Class 1A5: 939335*KT1; Class 1A6: 939335*KU8; Class 1A7: 939335*KV6; Class 1A8: 939335*KW4; Class 1A9: 939335*KX2; Class 1A10: 939335*KY0; Class 1A11: 939335*KZ7; Class 2A1: 939335*LA1; Class 2A2: 939335*LB9; Class 2A3: 939335*LC7; Class 3A1: 939335*LD5; Class 3A2: 939335*LE3; Class 3A3: 939335*LF0; Class 3A4: 939335*LG8; Class 3A5: 939335*LH6; Class 3A6: 939335*LJ2; Class 3A7: 939335*LK9; Class 3A8: 939335*LL7; Class 3A9: 939335*LM5; Class 3A10: 939335*LN3; Class 3A11: 939335*LP8; Class 3A12: 939335*LQ6; Class 3A13: 939335*LR4; Class 3A14: 939335*LS2; Class 3A15: 939335*LT0; Class 3A16: 939335*LU7; Class 3A17: 939335*LV5; Class 3A18: 939335*LW3; Class 3A19: 939335*LX1; Class 3A20: 939335*LY9; Class 3A21: 939335*LZ6; Class 3A22: 939335*MA0; Class 3A23: 939335*MB8; Class 3A24: 939335*MC6; Class 3A25: 939335*MD4; Class 3A26: 939335*ME2; Class 3A27: 939335*MF9; Class 3A28: 939335*MG7; Class 3A29: 939335*MH5; Class 3A30: 939335*MJ1; Class 3A31: 939335*MK8; Class 3A32: 939335*ML6; Class AX: 939335*MM4; Class 2X: 939335*MN2; Class AP: 939335*MP7; Class 2P: 939335*MQ5; Class CB1: 939335*MR3; Class CB2: 939335*MS1; Class CB3: 939335*MT9; Class R1: 939335*MU6; Class R2: 939335*MV4; Class R3: 939335*MW2; Class CB4: 939335*NK7; Class CB5: 939335*NM3; Class CB6: 939335*NP6
Startup/Issue Date: 05/25/2001
Washington Mutual Mortgage Securities Corp., Series 2001-8 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*KP9; Class 1A2: 939335*KQ7; Class 1A3: 939335*KR5; Class 1A4: 939335*KS3; Class 1A5: 939335*KT1; Class 1A6: 939335*KU8; Class 1A7: 939335*KV6; Class 1A8: 939335*KW4; Class 1A9: 939335*KX2; Class 1A10: 939335*KY0; Class 1A11: 939335*KZ7; Class 2A1: 939335*LA1; Class 2A2: 939335*LB9; Class 2A3: 939335*LC7; Class 3A1: 939335*LD5; Class 3A2: 939335*LE3; Class 3A3: 939335*LF0; Class 3A4: 939335*LG8; Class 3A5: 939335*LH6; Class 3A6: 939335*LJ2; Class 3A7: 939335*LK9; Class 3A8: 939335*LL7; Class 3A9: 939335*LM5; Class 3A10: 939335*LN3; Class 3A11: 939335*LP8; Class 3A12: 939335*LQ6; Class 3A13: 939335*LR4; Class 3A14: 939335*LS2; Class 3A15: 939335*LT0; Class 3A16: 939335*LU7; Class 3A17: 939335*LV5; Class 3A18: 939335*LW3; Class 3A19: 939335*LX1; Class 3A20: 939335*LY9; Class 3A21: 939335*LZ6; Class 3A22: 939335*MA0; Class 3A23: 939335*MB8; Class 3A24: 939335*MC6; Class 3A25: 939335*MD4; Class 3A26: 939335*ME2; Class 3A27: 939335*MF9; Class 3A28: 939335*MG7; Class 3A29: 939335*MH5; Class 3A30: 939335*MJ1; Class 3A31: 939335*MK8; Class 3A32: 939335*ML6; Class AX: 939335*MM4; Class 2X: 939335*MN2; Class AP: 939335*MP7; Class 2P: 939335*MQ5; Class CB1: 939335*MR3; Class CB2: 939335*MS1; Class CB3: 939335*MT9; Class R1: 939335*MU6; Class R2: 939335*MV4; Class R3: 939335*MW2; Class CB4: 939335*NK7; Class CB5: 939335*NM3; Class CB6: 939335*NP6
Startup/Issue Date: 05/25/2001
Washington Mutual Mortgage Securities Corp., Series 2001-9 Intermediate Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*MX0; Class 2A1: 939335*MY8; Class 2A2: 939335*MZ5; Class 2A3: 939335*NA9; Class 3A1: 939335*NB7; Class 2X: 939335*NC5; Class CB1: 939335*ND3; Class CB2: 939335*NE1; Class CB3: 939335*NF8; Class CB4: 939335*NR2; Class CB5: 939335*NT8; Class CB6: 939335*NV3; Class R1: 939335*NG6; Class R2: 939335*NH4; Class R3: 939335*NJ0
Startup/Issue Date: 05/25/2001
Washington Mutual Mortgage Securities Corp., Series 2001-9 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*MX0; Class 2A1: 939335*MY8; Class 2A2: 939335*MZ5; Class 2A3: 939335*NA9; Class 3A1: 939335*NB7; Class 2X: 939335*NC5; Class CB1: 939335*ND3; Class CB2: 939335*NE1; Class CB3: 939335*NF8; Class CB4: 939335*NR2; Class CB5: 939335*NT8; Class CB6: 939335*NV3; Class R1: 939335*NG6; Class R2: 939335*NH4; Class R3: 939335*NJ0
Startup/Issue Date: 05/25/2001
Washington Mutual Mortgage Securities Corp., Series 2001-9 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*MX0; Class 2A1: 939335*MY8; Class 2A2: 939335*MZ5; Class 2A3: 939335*NA9; Class 3A1: 939335*NB7; Class 2X: 939335*NC5; Class CB1: 939335*ND3; Class CB2: 939335*NE1; Class CB3: 939335*NF8; Class CB4: 939335*NR2; Class CB5: 939335*NT8; Class CB6: 939335*NV3; Class R1: 939335*NG6; Class R2: 939335*NH4; Class R3: 939335*NJ0
Startup/Issue Date: 05/25/2001
Washington Mutual Mortgage Securities Corp., Series 2001-AR1 Intermediate Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class IA1: 929227*AZ9; Class IA2: 929227*BA3; Class IA3: 929227*BB1; Class IA4: 929227*BC9; Class IIA1: 929227*BD7; Class IIA2: 929227*BE5; Class IIA3: 929227*BF2; Class B1: 929227*BG0; Class B2: 929227*BH8; Class B3: 929227*BJ4; Class R: 929227*BN5; Class B4: 929227*BK1; Class B5: 929227*BL9; Class B6: 929227*BM7
Startup/Issue Date: 07/30/2001
Washington Mutual Mortgage Securities Corp., Series 2001-AR1 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class IA1: 929227*AZ9; Class IA2: 929227*BA3; Class IA3: 929227*BB1; Class IA4: 929227*BC9; Class IIA1: 929227*BD7; Class IIA2: 929227*BE5; Class IIA3: 929227*BF2; Class B1: 929227*BG0; Class B2: 929227*BH8; Class B3: 929227*BJ4; Class R: 929227*BN5; Class B4: 929227*BK1; Class B5: 929227*BL9; Class B6: 929227*BM7
Startup/Issue Date: 07/30/2001
Washington Mutual Mortgage Securities Corp., Series 2001-AR1 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class IA1: 929227*AZ9; Class IA2: 929227*BA3; Class IA3: 929227*BB1; Class IA4: 929227*BC9; Class IIA1: 929227*BD7; Class IIA2: 929227*BE5; Class IIA3: 929227*BF2; Class B1: 929227*BG0; Class B2: 929227*BH8; Class B3: 929227*BJ4; Class R: 929227*BN5; Class B4: 929227*BK1; Class B5: 929227*BL9; Class B6: 929227*BM7
Startup/Issue Date: 07/30/2001
Washington Mutual Mortgage Securities Corp., Series 2001-MS10 Intermediate Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*QY4; Class 2A1: 939335*QZ1; Class 2A2: 939335*RA5; Class 2A3: 939335*RB3; Class 2A4: 939335*RC1; Class 2A5: 939335*RD9; Class 2A6: 939335*RE7; Class 2A7: 939335*RF4; Class 2A8: 939335*RG2; Class 2A9: 939335*RH0; Class 2A10: 939335*RJ6; Class 3A1: 939335*RK3; Class 3A2: 939335*RL1; Class 3A3: 939335*RM9; Class 3A4: 939335*RN7; Class 3A5: 939335*RP2; Class 3A6: 939335*RQ0; Class 3A7: 939335*RR8; Class 3A8: 939335*RS6; Class 3A9: 939335*RT4; Class 4A1: 939335*RU1; Class 4A2: 939335*RV9; Class 1X: 939335*RW7; Class 2X: 939335*RX5; Class AX: 939335*RY3; Class 1P: 939335*RZ0; Class 2P: 939335*SA4; Class AP: 939335*SB2; Class CB1: 939335*SC0; Class CB2: 939335*SD8; Class CB3: 939335*SE6; Class 2B1: 939335*SF3; Class 2B2: 939335*SG1; Class 2B3: 939335*SH9; Class R: 939335*SJ5; Class CB4: 939335*SK2; Class CB5: 939335*SL0; Class CB6: 939335*SM8; Class 2B4: 939335*SN6; Class 2B5: 939335*SP1; Class 2B6: 939335*SQ9
Startup/Issue Date: 08/29/2001
Washington Mutual Mortgage Securities Corp., Series 2001-MS10 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*QY4; Class 2A1: 939335*QZ1; Class 2A2: 939335*RA5; Class 2A3: 939335*RB3; Class 2A4: 939335*RC1; Class 2A5: 939335*RD9; Class 2A6: 939335*RE7; Class 2A7: 939335*RF4; Class 2A8: 939335*RG2; Class 2A9: 939335*RH0; Class 2A10: 939335*RJ6; Class 3A1: 939335*RK3; Class 3A2: 939335*RL1; Class 3A3: 939335*RM9; Class 3A4: 939335*RN7; Class 3A5: 939335*RP2; Class 3A6: 939335*RQ0; Class 3A7: 939335*RR8; Class 3A8: 939335*RS6; Class 3A9: 939335*RT4; Class 4A1: 939335*RU1; Class 4A2: 939335*RV9; Class 1X: 939335*RW7; Class 2X: 939335*RX5; Class AX: 939335*RY3; Class 1P: 939335*RZ0; Class 2P: 939335*SA4; Class AP: 939335*SB2; Class CB1: 939335*SC0; Class CB2: 939335*SD8; Class CB3: 939335*SE6; Class 2B1: 939335*SF3; Class 2B2: 939335*SG1; Class 2B3: 939335*SH9; Class R: 939335*SJ5; Class CB4: 939335*SK2; Class CB5: 939335*SL0; Class CB6: 939335*SM8; Class 2B4: 939335*SN6; Class 2B5: 939335*SP1; Class 2B6: 939335*SQ9
Startup/Issue Date: 08/29/2001
Washington Mutual Mortgage Securities Corp., Series 2001-MS10 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*QY4; Class 2A1: 939335*QZ1; Class 2A2: 939335*RA5; Class 2A3: 939335*RB3; Class 2A4: 939335*RC1; Class 2A5: 939335*RD9; Class 2A6: 939335*RE7; Class 2A7: 939335*RF4; Class 2A8: 939335*RG2; Class 2A9: 939335*RH0; Class 2A10: 939335*RJ6; Class 3A1: 939335*RK3; Class 3A2: 939335*RL1; Class 3A3: 939335*RM9; Class 3A4: 939335*RN7; Class 3A5: 939335*RP2; Class 3A6: 939335*RQ0; Class 3A7: 939335*RR8; Class 3A8: 939335*RS6; Class 3A9: 939335*RT4; Class 4A1: 939335*RU1; Class 4A2: 939335*RV9; Class 1X: 939335*RW7; Class 2X: 939335*RX5; Class AX: 939335*RY3; Class 1P: 939335*RZ0; Class 2P: 939335*SA4; Class AP: 939335*SB2; Class CB1: 939335*SC0; Class CB2: 939335*SD8; Class CB3: 939335*SE6; Class 2B1: 939335*SF3; Class 2B2: 939335*SG1; Class 2B3: 939335*SH9; Class R: 939335*SJ5; Class CB4: 939335*SK2; Class CB5: 939335*SL0; Class CB6: 939335*SM8; Class 2B4: 939335*SN6; Class 2B5: 939335*SP1; Class 2B6: 939335*SQ9
Startup/Issue Date: 08/29/2001
Washington Mutual Mortgage Securities Corp., Series 2001-S8 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*NX9; Class 2A1: 939335*NY7; Class 2A2: 939335*NZ4; Class 2A3: 939335*PA7; Class 2A4: 939335*PB5; Class 2A5: 939335*PC3; Class 2A6: 939335*PD1; Class 2A7: 939335*PE9; Class 2A8: 939335*PF6; Class 2A9: 939335*PG4; Class 2A10: 939335*PH2; Class 2A11: 939335*PJ8; Class 2A12: 939335*PK5; Class 2A13: 939335*PL3; Class 2A14: 939335*PM1; Class 2A15: 939335*PN9; Class 2A16: 939335*PP4; Class 2A17: 939335*PQ2; Class 2A18: 939335*PR0; Class 2A19: 939335*PS8; Class 2A20: 939335*PT6; Class 2A21: 939335*PU3; Class 2A22: 939335*PV1; Class 2A23: 939335*PW9; Class 2A24: 939335*PX7; Class 2A25: 939335*PY5; Class 2A26: 939335*PZ2; Class 2A27: 939335*QA6; Class 2A28: 939335*QB4; Class 2A29: 939335*QC2; Class 2A30: 939335*QD0; Class 1X: 939335*QE8; Class 2X: 939335*QF5; Class 1P: 939335*QG3; Class 2P: 939335*QH1; Class 1B1: 939335*QJ7; Class 1B2: 939335*QK4; Class 1B3: 939335*QL2; Class 2B1: 939335*QM0; Class 2B2: 939335*QN8; Class 2B3: 939335*QP3; Class R1: 939335*QQ1; Class R2: 939335*QR9; Class 1B4: 939335*QS7; Class 1B5: 939335*QT5; Class 1B6: 939335*QU2; Class 2B4: 939335*QV0; Class 2B5: 939335*QW8; Class 2B6: 939335*QX6
Startup/Issue Date: 07/26/2001
Washington Mutual Mortgage Securities Corp., Series 2001-S8 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*NX9; Class 2A1: 939335*NY7; Class 2A2: 939335*NZ4; Class 2A3: 939335*PA7; Class 2A4: 939335*PB5; Class 2A5: 939335*PC3; Class 2A6: 939335*PD1; Class 2A7: 939335*PE9; Class 2A8: 939335*PF6; Class 2A9: 939335*PG4; Class 2A10: 939335*PH2; Class 2A11: 939335*PJ8; Class 2A12: 939335*PK5; Class 2A13: 939335*PL3; Class 2A14: 939335*PM1; Class 2A15: 939335*PN9; Class 2A16: 939335*PP4; Class 2A17: 939335*PQ2; Class 2A18: 939335*PR0; Class 2A19: 939335*PS8; Class 2A20: 939335*PT6; Class 2A21: 939335*PU3; Class 2A22: 939335*PV1; Class 2A23: 939335*PW9; Class 2A24: 939335*PX7; Class 2A25: 939335*PY5; Class 2A26: 939335*PZ2; Class 2A27: 939335*QA6; Class 2A28: 939335*QB4; Class 2A29: 939335*QC2; Class 2A30: 939335*QD0; Class 1X: 939335*QE8; Class 2X: 939335*QF5; Class 1P: 939335*QG3; Class 2P: 939335*QH1; Class 1B1: 939335*QJ7; Class 1B2: 939335*QK4; Class 1B3: 939335*QL2; Class 2B1: 939335*QM0; Class 2B2: 939335*QN8; Class 2B3: 939335*QP3; Class R1: 939335*QQ1; Class R2: 939335*QR9; Class 1B4: 939335*QS7; Class 1B5: 939335*QT5; Class 1B6: 939335*QU2; Class 2B4: 939335*QV0; Class 2B5: 939335*QW8; Class 2B6: 939335*QX6
Startup/Issue Date: 07/26/2001
Washington Mutual Mortgage Securities Corp., Series 2001-S9 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 929227*BP0; Class A2: 929227*BQ8; Class A3: 929227*BR6; Class A4: 929227*BS4; Class A5: 929227*BT2; Class A6: 929227*BU9; Class A7: 929227*BV7; Class A8: 929227*BW5; Class A9: 929227*BX3; Class A10: 929227*BY1; Class A11: 929227*BZ8; Class A12: 929227*CA2; Class A13: 929227*CB0; Class A14: 929227*CC8; Class A15: 929227*CD6; Class A16: 929227*CE4; Class A17: 929227*CF1; Class A18: 929227*CG9; Class A19: 929227*CH7; Class A20: 929227*CJ3; Class A21: 929227*CK0; Class A22: 929227*CL8; Class X: 929227*CM6; Class P: 929227*CV6; Class B1: 929227*CN4; Class B2: 929227*CP9; Class B3: 929227*CQ7; Class R: 929227*CR5; Class B4: 929227*CS3; Class B5: 929227*CT1; Class B6: 929227*CU8
Startup/Issue Date: 08/27/2001
Washington Mutual Mortgage Securities Corp., Series 2001-S9 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 929227*BP0; Class A2: 929227*BQ8; Class A3: 929227*BR6; Class A4: 929227*BS4; Class A5: 929227*BT2; Class A6: 929227*BU9; Class A7: 929227*BV7; Class A8: 929227*BW5; Class A9: 929227*BX3; Class A10: 929227*BY1; Class A11: 929227*BZ8; Class A12: 929227*CA2; Class A13: 929227*CB0; Class A14: 929227*CC8; Class A15: 929227*CD6; Class A16: 929227*CE4; Class A17: 929227*CF1; Class A18: 929227*CG9; Class A19: 929227*CH7; Class A20: 929227*CJ3; Class A21: 929227*CK0; Class A22: 929227*CL8; Class X: 929227*CM6; Class P: 929227*CV6; Class B1: 929227*CN4; Class B2: 929227*CP9; Class B3: 929227*CQ7; Class R: 929227*CR5; Class B4: 929227*CS3; Class B5: 929227*CT1; Class B6: 929227*CU8
Startup/Issue Date: 08/27/2001
Washington Mutual Mortgage Securities Corp., Series ABN AMRO 2001-4 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 00077B*QT3; Class A2: 00077B*QU0; Class A3: 00077B*QV8; Class A4: 00077B*QW6; Class A5: 00077B*QX4; Class A6: 00077B*QY2; Class A7: 00077B*QZ9; Class A8: 00077B*RA3; Class A9: 00077B*RB1; Class A10: 00077B*RC9; Class AX: 00077B*RD7; Class M: 00077B*RE5; Class BX: 00077B*RF2; Class B1: 00077B*RG0; Class B2: 00077B*RH8; Class R: 00077B*RJ4; Class B3: 00077B*RK1; Class B4: 00077B*RL9; Class B5: 00077B*RM7
Startup/Issue Date: 07/27/2001
Washington Mutual Mortgage Securities Corp., Series ABN AMRO 2001-4 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 00077B*QT3; Class A2: 00077B*QU0; Class A3: 00077B*QV8; Class A4: 00077B*QW6; Class A5: 00077B*QX4; Class A6: 00077B*QY2; Class A7: 00077B*QZ9; Class A8: 00077B*RA3; Class A9: 00077B*RB1; Class A10: 00077B*RC9; Class AX: 00077B*RD7; Class M: 00077B*RE5; Class BX: 00077B*RF2; Class B1: 00077B*RG0; Class B2: 00077B*RH8; Class R: 00077B*RJ4; Class B3: 00077B*RK1; Class B4: 00077B*RL9; Class B5: 00077B*RM7
Startup/Issue Date: 07/27/2001
Washington Mutual Mortgage Securities Corp., Series Merrill Lynch Mtg Inv 2001-WM1 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 55309G*AA4; Class AIO: 55309G*AH9; Class M1: 55309G*AB2; Class M2: 55309G*AC0; Class M3: 55309G*AD8; Class B1: 55309G*AE6; Class B2: 55309G*AF3; Class B3: 55309G*AG1; Class R1: xBCCO541X3; Class R2: xBCCO541Y1
Startup/Issue Date: 07/30/2001
Washington Mutual Mortgage Securities Corp., Series Merrill Lynch Mtg Inv 2001-WM1 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 55309G*AA4; Class AIO: 55309G*AH9; Class M1: 55309G*AB2; Class M2: 55309G*AC0; Class M3: 55309G*AD8; Class B1: 55309G*AE6; Class B2: 55309G*AF3; Class B3: 55309G*AG1; Class R1: xBCCO541X3; Class R2: xBCCO541Y1
Startup/Issue Date: 07/30/2001
Washington Mutual MSC Mtg. Pass through Certs., Series 2001-AR1 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A: 939335*YC3; Class B1: 939335*YG4; Class B2: 939335*YH2; Class B3: 939335*YJ8; Class R: 939335*YF6; Class B4: 939335*YK5; Class B5: 939335*YL3; Class B6: 939335*YM1
Startup/Issue Date: 12/01/2001
Washington Mutual MSC Mtg. Pass Through Certs., Series 2001-MS11 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 939335*SR7; Class A2: 939335*SS5; Class A3: 939335*ST3; Class A4: 939335*SU0; Class A5: 939335*SV8; Class A6: 939335*SW6; Class A7: 939335*SX4; Class A8: 939335*SY2; Class A9: 939335*SZ9; Class A10: 939335*TA3; Class A11: 939335*TB1; Class A12: 939335*TC9; Class A13: 939335*TD7; Class A14: 939335*TE5; Class A15: 939335*TF2; Class A16: 939335*TG0; Class A17: 939335*TH8; Class A18: 939335*TJ4; Class A19: 939335*TK1; Class A20: 939335*TL9; Class A21: 939335*TM7; Class A22: 939335*TN5; Class A23: 939335*TP0; Class A24: 939335*TQ8; Class A25: 939335*TR6; Class A26: 939335*TS4; Class A27: 939335*TT2; Class A28: 939335*TU9; Class A29: 939335*TV7; Class A30: 939335*TW5; Class A31: 939335*TX3; Class A32: 939335*TY1; Class A33: 939335*TZ8; Class A34: 939335*UA1; Class A35: 939335*UB9; Class A36: 939335*UC7; Class A37: 939335*UD5; Class A38: 939335*UE3; Class A39: 939335*UF0; Class A40: 939335*UG8; Class A41: 939335*UH6; Class X: 939335*UJ2; Class P: 939335*UK9; Class B1: 939335*UL7; Class B2: 939335*UM5; Class B3: 939335*UN3; Class R: 939335*UP8; Class B4: 939335*UQ6; Class B5: 939335*UR4; Class B6: 939335*US2
Startup/Issue Date: 09/28/2001
Washington Mutual MSC Mtg. Pass Through Certs., Series 2001-MS11 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class A1: 939335*SR7; Class A2: 939335*SS5; Class A3: 939335*ST3; Class A4: 939335*SU0; Class A5: 939335*SV8; Class A6: 939335*SW6; Class A7: 939335*SX4; Class A8: 939335*SY2; Class A9: 939335*SZ9; Class A10: 939335*TA3; Class A11: 939335*TB1; Class A12: 939335*TC9; Class A13: 939335*TD7; Class A14: 939335*TE5; Class A15: 939335*TF2; Class A16: 939335*TG0; Class A17: 939335*TH8; Class A18: 939335*TJ4; Class A19: 939335*TK1; Class A20: 939335*TL9; Class A21: 939335*TM7; Class A22: 939335*TN5; Class A23: 939335*TP0; Class A24: 939335*TQ8; Class A25: 939335*TR6; Class A26: 939335*TS4; Class A27: 939335*TT2; Class A28: 939335*TU9; Class A29: 939335*TV7; Class A30: 939335*TW5; Class A31: 939335*TX3; Class A32: 939335*TY1; Class A33: 939335*TZ8; Class A34: 939335*UA1; Class A35: 939335*UB9; Class A36: 939335*UC7; Class A37: 939335*UD5; Class A38: 939335*UE3; Class A39: 939335*UF0; Class A40: 939335*UG8; Class A41: 939335*UH6; Class X: 939335*UJ2; Class P: 939335*UK9; Class B1: 939335*UL7; Class B2: 939335*UM5; Class B3: 939335*UN3; Class R: 939335*UP8; Class B4: 939335*UQ6; Class B5: 939335*UR4; Class B6: 939335*US2
Startup/Issue Date: 09/28/2001
Washington Mutual MSC Mtg. Pass Through Certs., Series 2001-MS12 Intermediate Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*UW3; Class 1A2: 939335*UX1; Class 1A3: 939335*UY9; Class 1A4: 939335*UZ6; Class 1A5: 939335*VA0; Class 1A6: 939335*VB8; Class 1A7: 939335*VC6; Class 1A8: 939335*VD4; Class 1A9: 939335*VE2; Class 1A10: 939335*VF9; Class 1A11: 939335*VG7; Class 1A12: 939335*VH5; Class 1A13: 939335*VJ1; Class 1A14: 939335*VK8; Class 1A15: 939335*VL6; Class 1A16: 939335*VM4; Class 1A17: 939335*VN2; Class 1A18: 939335*VP7; Class 1A19: 939335*VQ5; Class 1A20: 939335*VR3; Class 1A21: 939335*VS1; Class 1A22: 939335*VT9; Class 1A23: 939335*VU6; Class 1A24: 939335*VV4; Class 2A1: 939335*VW2; Class 3A1: 939335*VX0; Class 3A2: 939335*VY8; Class 3A3: 939335*VZ5; Class 3A4: 939335*WA9; Class 3A5: 939335*WB7; Class 3A6: 939335*WC5; Class 3A7: 939335*WD3; Class 3A8: 939335*WE1; Class 3A9: 939335*WF8; Class 3A10: 939335*WG6; Class AX: 939335*WH4; Class 2X: 939335*WJ0; Class AP: 939335*WK7; Class 2P: 939335*WL5; Class CB1: 939335*WM3; Class CB2: 939335*WN1; Class CB3: 939335*WP6; Class R: 939335*WQ4; Class CB4: 939335*WR2; Class CB5: 939335*WS0; Class CB6: 939335*WT8
Startup/Issue Date: 10/30/2001
Washington Mutual MSC Mtg. Pass Through Certs., Series 2001-MS12 Lower Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*UW3; Class 1A2: 939335*UX1; Class 1A3: 939335*UY9; Class 1A4: 939335*UZ6; Class 1A5: 939335*VA0; Class 1A6: 939335*VB8; Class 1A7: 939335*VC6; Class 1A8: 939335*VD4; Class 1A9: 939335*VE2; Class 1A10: 939335*VF9; Class 1A11: 939335*VG7; Class 1A12: 939335*VH5; Class 1A13: 939335*VJ1; Class 1A14: 939335*VK8; Class 1A15: 939335*VL6; Class 1A16: 939335*VM4; Class 1A17: 939335*VN2; Class 1A18: 939335*VP7; Class 1A19: 939335*VQ5; Class 1A20: 939335*VR3; Class 1A21: 939335*VS1; Class 1A22: 939335*VT9; Class 1A23: 939335*VU6; Class 1A24: 939335*VV4; Class 2A1: 939335*VW2; Class 3A1: 939335*VX0; Class 3A2: 939335*VY8; Class 3A3: 939335*VZ5; Class 3A4: 939335*WA9; Class 3A5: 939335*WB7; Class 3A6: 939335*WC5; Class 3A7: 939335*WD3; Class 3A8: 939335*WE1; Class 3A9: 939335*WF8; Class 3A10: 939335*WG6; Class AX: 939335*WH4; Class 2X: 939335*WJ0; Class AP: 939335*WK7; Class 2P: 939335*WL5; Class CB1: 939335*WM3; Class CB2: 939335*WN1; Class CB3: 939335*WP6; Class R: 939335*WQ4; Class CB4: 939335*WR2; Class CB5: 939335*WS0; Class CB6: 939335*WT8
Startup/Issue Date: 10/30/2001
Washington Mutual MSC Mtg. Pass Through Certs., Series 2001-MS12 Upper Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 939335*UW3; Class 1A2: 939335*UX1; Class 1A3: 939335*UY9; Class 1A4: 939335*UZ6; Class 1A5: 939335*VA0; Class 1A6: 939335*VB8; Class 1A7: 939335*VC6; Class 1A8: 939335*VD4; Class 1A9: 939335*VE2; Class 1A10: 939335*VF9; Class 1A11: 939335*VG7; Class 1A12: 939335*VH5; Class 1A13: 939335*VJ1; Class 1A14: 939335*VK8; Class 1A15: 939335*VL6; Class 1A16: 939335*VM4; Class 1A17: 939335*VN2; Class 1A18: 939335*VP7; Class 1A19: 939335*VQ5; Class 1A20: 939335*VR3; Class 1A21: 939335*VS1; Class 1A22: 939335*VT9; Class 1A23: 939335*VU6; Class 1A24: 939335*VV4; Class 2A1: 939335*VW2; Class 3A1: 939335*VX0; Class 3A2: 939335*VY8; Class 3A3: 939335*VZ5; Class 3A4: 939335*WA9; Class 3A5: 939335*WB7; Class 3A6: 939335*WC5; Class 3A7: 939335*WD3; Class 3A8: 939335*WE1; Class 3A9: 939335*WF8; Class 3A10: 939335*WG6; Class AX: 939335*WH4; Class 2X: 939335*WJ0; Class AP: 939335*WK7; Class 2P: 939335*WL5; Class CB1: 939335*WM3; Class CB2: 939335*WN1; Class CB3: 939335*WP6; Class R: 939335*WQ4; Class CB4: 939335*WR2; Class CB5: 939335*WS0; Class CB6: 939335*WT8
Startup/Issue Date: 10/30/2001
Washington Mutual MSC Mtg. Pass Through Certs., Series 2001-MS14 Intermediate Tier
Remic Investor Hotline
75 North Fairway Drive
Vernon Hills, IL 60061
Tel: (703) 747-5770
CUSIP: Class 1A1: 929227*FG6; Class 1A2: 929227*FH4; Class 1A3: 929227*FJ0; Class 1A4: 929227*FK7; Class 1A5: 929227*FL5; Class 1A6: 929227*FM3; Class 1A7: 929227*FN1; Class 1A8: 929227*FP6; Class 1A9: 929227*FQ4; Class 1A10: 929227*FR2; Class 1A11: 929227*FS0; Class 1A12: 929227*FT8; Class 1A13: 929227*FU5; Class 1A14: 929227*FV3; Class 1A15: 929227*FW1; Class 1A16: 929227*FX9; Class 1A17: 929227*FY7; Class 1A18: 929227*FZ4; Class 1A19: 929227*GA8; Class 1A20: 929227*GB6; Class 1A21: 929227*GC4; Class 2A1: 929227*GD2; Class 3A1: 929227*GE0; Class 4A1: 929227*GJ9; Class 4A2: 929227*GK6; Class 4A3: 929227*GL4; Class 4A4: 929227*GM2; Class 4A5: 929227*GN0; Class 4A6: 929227*GP5; Class 4A7: 929227*GQ3; Class 4A8: 929227*GR1; Class 4A9: 929227*GS9; Class 4A10: 929227*GT7; Class 4A11: 929227*GU4; Class 4A12: 929227*GV2; Class 5A1: 929227*GW0; Class 5A2: 929227*GX8; Class 5A3: 929227*GY6; Class 5A4: 929227*GZ3; Class 5A5: 929227*HA7; Class 5A6: 929227*HB5; Class 5A7: 929227*HC3; Class 5A8: 929227*HD1; Class 5A9: 929227*HE9; Class AX: 929227*HF6; Class 2X: 929227*HG4; Class AP: 929227*HH2; Class 2P: 929227*HJ8; Class CB1: 929227*HK5; Class CB2: 929227*HL3; Class CB3: 929227*HM1; Class R: 929227*HN9; Class CB4: 929227*GF7; Class CB5: 929227*GG5; Class CB6: 929227*GH3
Startup/Issue Date: 11/29/2001
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