<PAGE>
497
MML Series Investment Fund
Supplement dated November 4, 1999
to the Statement of Additional Information dated May 3, 1999
as previously supplemented June 11, 1999
The Statement of Additional Information is changed as follows:
1. At page B-40 of the Statement of Additional Information, the following
changes are hereby made to the information provided for Stuart H. Reese: (i)
delete the designation of "President of MML Trust"; and (ii) add "President
and Chief Executive Officer (since 1999), David L. Babson and Company
Incorporated (investment adviser)" at the end thereof.
2. Page B-43 of the Statement of Additional Information is hereby amended by
deleting John H. Southworth as Trustee of MML Trust, and adding the following:
John V. Murphy* Trustee and President of MML Trust
1295 State Street
Springfield, MA 01111
Age 50
Executive Vice President (since 1997), MassMutual; Executive Vice
President, Director and Chief Operating Officer (1995-1997), David L.
Babson and Company Incorporated (investment adviser); Senior Vice President
and Director (1995-1997), Potomac Babson Incorporated (investment adviser);
Chief Operating Officer (1993-1996), Concert Capital Management, Inc.
(investment adviser); Trustee and President (since 1999), MassMutual
Institutional Funds (open-end investment company); Trustee, MassMutual
Institutional Funds (1997-1999).
3. Pages B-44 to B-45 of the Statement of Additional Information are hereby
amended by deleting the references to Michael D. Hays, Mary Wilson Kibbe,
Charles C. McCobb, Jr., Stephen L. Kuhn, Judith A. Martini and Mark B. Ackerman
in their entirety, and substituting the following:
J. Spencer Williams Chief Financial Officer and Treasurer
1295 State Street of MML Trust
Springfield, MA 01111
Age: 41
Senior Vice President (since 1998), Vice President (1997), MassMutual;
Senior Vice President (1996-1997), Vice President (1994-1995), Federated
Investors (investment adviser); Chief Financial Officer and Treasurer
(since 1999), MassMutual Institutional Funds (open-end investment company).
Paul DeSimone Vice President of MML Trust
1295 State Street
Springfield, MA 01111
Age: 43
Senior Vice President (since 1999), MassMutual, CM Life Insurance Company
(insurance company) and MML Baystate Insurance Company (insurance company);
Director (since 1999), MML Investors Services, Inc. (broker-dealer); Vice
President (1994-1999), American Skandia Investment Services (investment
adviser) and American Skandia Marketing, Inc. (broker-dealer).
<PAGE>
Vernon J. Meyer Vice President of MML Trust
1295 State Street
Springfield, MA 01111
Age: 35
Vice President (since 1998), Second Vice President (1995-1998), Assistant
Vice President (1994-1995), MassMutual; Vice President (since 1999),
MassMutual Institutional Funds (open-end investment company).
Isaac Williams, Jr. Vice President of MML Trust
1295 State Street
Springfield, MA 01111
Age: 41
Second Vice President (since 1998), MassMutual; Regional Director (1988-
1998), Peerless Insurance Company (property/casualty insurance company);
Vice President (since 1999), MassMutual Institutional Funds (open-end
investment company).
Thomas M. Kinzler Vice President and Secretary of MML Trust
1295 State Street
Springfield, MA 01111
Age: 44
Vice President and Associate General Counsel (since 1999), Second Vice
President and Associate General Counsel (1996-1999), Assistant Vice
President and Counsel (1995-1996), Counsel (1989-1995), MassMutual; Vice
President and Secretary (since 1999), MassMutual Institutional Funds (open-
end investment company).
4. Page B-46 of the Statement of Additional Information is hereby amended by
deleting the first full paragraph in its entirety, and substituting in its place
the following:
The following table discloses actual compensation paid to non-interested
Trustees of MML Trust and members of its Advisory Board during the 1998
fiscal year. MML Trust paid no compensation to any of its officers. MML
Trust has no pension or retirement plan, but does have a deferred
compensation plan. The plan provides for amounts deferred to be credited a
rate of interest set by the Board of Trustees from time to time, currently
eight percent (8%). No Trustee is currently entitled to receive any
benefits under such deferred compensation plan. Each of the non-interested
Trustees (including former members of the Advisory Board who were elected
as Trustees by a majority of the shares outstanding as of February 1, 1999)
also serves as a Trustee of one other registered investment company managed
by MassMutual.
5. Page B-59 of the Statement of Additional Information is hereby amended by
adding the following paragraph as the second full paragraph:
Portfolio securities traded on more than one national securities exchange
are valued at the last price on the business day as of which such value is
being determined at the close of the exchange representing the principal
market for such securities. All assets and liabilities expressed in
foreign currencies will be converted into U.S. dollars at the mean between
the buying and selling rates of such currencies against U.S. dollars last
quoted by any major bank. If such quotations are not available, the rate
of exchange will be determined in accordance with policies established by
the Board of Trustees.
