SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (date of earliest event reported): October 19, 2000
Credit Suisse First Boston Mortgage Securities Corp Mortgage-Backed Pass-Through
Certificates, Series 1999-WM1
(Exact name of registrant as specified in its charter)
United States 333-53115 13-3320910
(State or Other Jurisdiction (Commission (I.R.S. Employer
of Incorporation) File Number) Identification No.)
11 Madison Avenue, 5th Floor
New York, New York 10010
(Address of Principal Executive Offices) (Zip Code)
Registrant's telephone number, including area code: (212) 325-2000
Item 5. Other Events
On October 19, 2000 a scheduled distribution was made from the Trust
to holders of the Certificates. The Trustee has caused to be filed with
the Commission, the Monthly Report dated October 19, 2000
The Monthly Report is filed pursuant to and in accordance with
(1) numerous no-action letters (2) current Commission policy
in the area.
A. Monthly Report Information
See Exhibit No.1
B. Have and deficiencies occurred? NO.
Date:
Amount:
C. Item 1: Legal Proceedings: NONE
D. Item 2: Changes in Securities: NONE
E. Item 4: Submission of Matters to a Vote of
Certificateholders: NONE
F. Item 5: Other Information - Form 10-Q, PartII - Items 1,2,4,5
if applicable: NOT APPLICABLE
Item 7. Monthly Statements and Exhibits
Exhibit No.
1.) Monthly Distribution RepoOctober 19, 2000
Washington Mutual Bank, F.A. Mortgage-Backed Pass-Through Certificates
STATEMENT TO CERTIFICATEHOLDERS
Distribution Date: October 19, 2000
DISTRIBUTION SUMMARY
Beginning Current PeriodClass Accrued
Original Current PrincipaPrincipal Pass-Through Interest
Class Face Value Amount Distribution Rate Distributed (1)
1-A-1 222151000.00 173671274.02 2017417.59 6.1897% 895605.27
1-A-2 208709000.00 208709000.00 0.00 6.1897% 1076291.29
2-A-1 257137000.00 222931980.46 2763907.45 6.0164% 1117029.28
2-A-2 147243000.00 147243000.00 0.00 6.0164% 737779.94
3-A-1 599085000.00 522017132.47 8807256.04 6.3982% 2782781.83
3-A-2 350619000.00 350619000.00 0.00 6.3982% 1869088.43
4-A-1 157510000.00 119633361.06 3082478.15 6.9454% 692199.06
4-A-2 108014000.00 108014000.00 0.00 6.9454% 625171.30
5-A-1 350000000.00 192813308.80 11055413.42 6.7296% 1080952.36
5-A-2 469803000.00 469803000.00 0.00 6.7296% 2633815.41
5-A-3 200000000.00 200000000.00 0.00 6.7296% 1121597.99
6-A-1 450000000.00 352328138.15 11500455.46 6.8672% 2015742.97
6-A-2 490357000.00 490357000.00 0.00 6.8672% 2805434.96
6-A-3 200000000.00 200000000.00 0.00 6.8672% 1144539.90
7-A 44457000.00 34782506.27 344468.66 7.6083% 220504.28
8-A 61246000.00 58087366.97 714450.46 7.5774% 366776.15
M-1 129023000.00 127847213.11 123193.30 6.6069% 703691.03
M-2 107909000.00 106925625.04 103033.30 6.6069% 588535.34
M-3 60992000.00 60436179.76 58236.17 6.6069% 332650.17
M-4 30495000.00 30217099.00 29117.13 6.6069% 166319.63
B-1 21113000.00 20920597.19 20159.04 6.6069% 115150.23
B-2 11728000.00 11621122.69 11198.09 6.6069% 63964.48
B-3 14079705.76 13951397.36 13443.54 6.6069% 76790.67
R 200.00 0.00 0.00 7.5774% 0.00
TOTAL:4691670905.76 4222929302.35 40644227.80 23232411.97
(1) Interest Distribution includes Reimbursement of Realized Losses
Prepayment Ending
Realized LossInterest Interest Current Prin.
Principal Shortfall Shortfall Amount
Class
1-A-1 0.00 0.00 212.17 171653856.43
1-A-2 0.00 0.00 254.98 208709000.00
2-A-1 0.00 0.00 682.27 220168073.01
2-A-2 0.00 0.00 450.63 147243000.00
3-A-1 0.00 0.00 527.65 513209876.43
3-A-2 0.00 0.00 354.40 350619000.00
4-A-1 0.00 0.00 223.62 116550882.91
4-A-2 0.00 0.00 0.00 108014000.00
5-A-1 0.00 0.00 342.74 181757895.38
5-A-2 0.00 0.00 835.10 469803000.00
5-A-3 0.00 0.00 0.00 200000000.00
6-A-1 0.00 0.00 525.09 340827682.69
6-A-2 0.00 0.00 730.80 490357000.00
6-A-3 0.00 0.00 0.00 200000000.00
7-A 0.00 0.00 24.67 34438037.61
8-A 0.00 0.00 15.28 57372916.51
M-1 0.00 0.00 200.79 127724019.81
M-2 0.00 0.00 167.94 106822591.74
M-3 0.00 0.00 94.92 60377943.59
M-4 0.00 0.00 47.46 30187981.87
B-1 0.00 0.00 32.86 20900438.15
B-2 0.00 0.00 18.25 11609924.60
B-3 0.00 0.00 21.91 13937953.82
R 0.00 0.00 0.00 0.00
TOTAL: 0 0 5763.53 4182285075
AMOUNTS PER $1,000 UNIT
Beginning Ending
Current PrincipaPrincipal Interest Current Prin.
Class Cusip Amount Distribution Distribution Amount
1-A-1 22540ANQ7 781.77129079 9.08128971 4.03151582 772.69000108
1-A-2 22540ANR5 1000.00000000 0.00000000 5.15689927 1000.00000000
2-A-1 22540ANS3 866.97744961 10.74877381 4.34410170 856.22867580
2-A-2 22540ANT1 1000.00000000 0.00000000 5.01062828 1000.00000000
3-A-1 22540ANU8 871.35737411 14.70117937 4.64505342 856.65619475
3-A-2 2254A0NV6 1000.00000000 0.00000000 5.33082471 1000.00000000
4-A-1 22540ANW4 759.52867158 19.57004730 4.39463564 739.95862428
4-A-2 100001523 1000.00000000 0.00000000 5.78787287 1000.00000000
5-A-1 22540ANY0 550.89516800 31.58689549 3.08843531 519.30827251
5-A-2 22540ANZ7 1000.00000000 0.00000000 5.60621241 1000.00000000
5-A-3 100001524 1000.00000000 0.00000000 5.60798995 1000.00000000
6-A-1 22540APB8 782.95141811 25.55656769 4.47942882 757.39485042
6-A-2 22540APC6 1000.00000000 0.00000000 5.72120916 1000.00000000
6-A-3 10001525 1000.00000000 0.00000000 5.72269950 1000.00000000
7-A 22540APE2 782.38536721 7.74835594 4.95994512 774.63701127
8-A 22540APF9 948.42711312 11.66525912 5.98857313 936.76185400
M-1 22540APJ1 990.88699774 0.95481658 5.45399681 989.93218116
M-2 22540APK8 990.88699775 0.95481656 5.45399679 989.93218119
M-3 22540APL6 990.88699764 0.95481653 5.45399675 989.93218111
M-4 22540APM4 990.88699787 0.95481653 5.45399672 989.93218134
B-1 100001526 990.88699806 0.95481646 5.45399659 989.93218159
B-2 100001527 990.88699608 0.95481668 5.45399727 989.93217940
B-3 100001528 990.88699706 0.95481683 5.45399679 989.93218023
R-1 22540APG7 0.00000000 0.00000000 0.00000000 0.00000000
R-2 22540APH5 0.00000000 0.00000000 0.00000000 0.00000000
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this
report to be signed on its behalf by the undersigned
thereunto duly authorized.
WASHINGTON MUTUAL BANK, FA
MORTGAGE-BACKED PASS-THROUGH CERTIFICATES
SERIES 1999-WM1
By: /s/ Barbara Grosse
Name: Barbara Grosse
Title: Vice President
Bank One, NA
