153052
SUPPLEMENT TO THE PROSPECTUS
DATED APRIL 28, 2000
NORTHWESTERN MUTUAL SERIES FUND, INC.
Steven P. Swanson, Managing Director of Northwestern
Investment Management Company, joined Northwestern Mutual in
1981. He received a B.A. degree from Lawrence University and
an M.B.A. from the University of Michigan. Mr. Swanson is
the head of the high yield division of Northwestern
Investment Management Company and manages the high yield
fixed income securities of Northwestern Mutual.
Mr. Swanson is a co-manager of the High Yield Bond
Portfolio.
Timothy S. Collins, Managing Director of Northwestern
Investment Management Company, joined Northwestern Mutual in
1986. Mr. Collins is a Chartered Financial Analyst and
holds a B.A. degree from St. Norbert College and an M.B.A.
from the University of Wisconsin - Madison. Mr. Collins is
the director of research of the high yield division of
Northwestern Investment Management Company and is a co-
manager of the High Yield Bond Portfolio.
The date of this Prospectus Supplement is January 2, 2001.
