<PAGE>
WEITZ SERIES FUND, INC.
Supplement dated June 21, 1999 to the Prospectus dated July 30, 1999, as
supplemented August 18, 1998 and October 7, 1998
1. The first sentence of the section titled "OPENING A REGULAR NEW ACCOUNT" on
Page 20 of the Prospectus is amended in its entirety to read as follows:
You can open a new account by completing and signing a Purchase Application,
enclosing a check made payable to WEITZ SERIES FUND, INC. and mailing the
application and check to:
BY MAIL:
Weitz Funds
P.O. Box 219320
Kansas City, Missouri 64121-9320
BY CERTIFIED OR OVERNIGHT DELIVERY:
Weitz Funds
c/o National Financial Data Services
330 W. 9th, 4th Floor
Kansas City, Missouri 64105
2. The first sentence of the section titled "PURCHASING SHARES OF A FUND - BY
MAIL" on Page 21 of the Prospectus is amended in its entirety to read as
follows:
To purchase additional shares in an existing account, send a check payable to
WEITZ SERIES FUND, INC. together with the remittance stub which is the bottom
portion of your most recent transaction statement to:
BY MAIL:
Weitz Funds
P.O. Box 219320
Kansas City, Missouri 64121-9320
BY CERTIFIED OR OVERNIGHT DELIVERY:
Weitz Funds
c/o National Financial Data Services
330 W. 9th, 4th Floor
Kansas City, Missouri 64105
3. Paragraphs 1 and 2 of the section titled "PURCHASING SHARES OF A FUND - BY
WIRE" on Page 21 of the Prospectus are amended in their entirety to read as
follows:
1. Call Client Services at 402-391-1980 or 800-304-9745 and furnish
your account name, address and account number together with the
amount being wired and the name of the wiring bank.
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2. Instruct the bank to wire funds as follows:
IFTC
ABA #101003621
DDA #8907561075
Weitz Funds Purchase Account
For credit to (indicate appropriate Fund number):
Value 328
Fixed 329
Government 330
Hickory 332
For the Account of: Your Account Number and Name
4. The last paragraph of the section titled "CONFIRMATIONS AND SHAREHOLDER
REPORTS" on Page 22 of the Prospectus is replaced entirely by a new paragraph
which reads as follows:
To reduce the volume of mail you receive, only one copy of most financial
reports and prospectuses will be mailed to your household. You may request that
additional copies be sent by notifying the Weitz Funds.
5. A new section is added on Page 22 of the Prospectus titled "TELEPHONE
COMMUNICATIONS" to read as follows:
TELEPHONE COMMUNICATIONS
Telephone conversations with the Weitz Funds may be recorded or monitored for
verification, recordkeeping and quality assurance purposes.
6. The second paragraph of the section titled "REDEMPTION PROCEDURES" on Page 23
of the Prospectus is amended in its entirety to read as follows:
A redemption request in good order can be sent by mail or facsimile transmission
to:
BY MAIL:
Weitz Funds
P.O. Box 219320
Kansas City, Missouri 64121-9320
BY CERTIFIED OR OVERNIGHT DELIVERY:
Weitz Funds
c/o National Financial Data Services
330 W. 9th, 4th Floor
Kansas City, Missouri 64105
FAX NUMBER: 402-391-2125
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7. Subparagraph number 1 of the second paragraph of the section titled
"EXCHANGING SHARES" is amended in its entirety to read as follows:
1. If you are exchanging for shares of Partners Value Fund and do
not currently have an account in Partners Value Fund, request a
prospectus for Partners Value Fund by calling 402-391-1980 or
800-232-4161. The shares being acquired must be qualified for
sale in your state of residence.
8. A new paragraph is added to the section titled "TRANSFER AGENT AND
ADMINISTRATIVE SERVICES" on page 29 of the Prospectus to read as follows:
Wallace R. Weitz & Company has contracted with National Financial Data Services,
Inc. to serve as a sub-transfer agent for the Funds.
<PAGE>
WEITZ SERIES FUND, INC.
Supplement dated June 21, 1999 to the Statement of Additional Information
dated July 30, 1998, as supplemented January 5, 1999
1. The fee table included in the first paragraph of the section titled "THE
ADMINISTRATOR" on page 19 of the Statement of Additional Information is
amended in its entirety to read as follows:
<TABLE>
<CAPTION>
Asset Break Points
GREATER THAN LESS THAN % OF NAV MINIMUM
- ------------ --------- -------- -------
<S> <C> <C> <C>
0 25,000,000 0.225% 25,000
25,000,000 100,000,000 0.200%
100,000,000 500,000,000 0.175%
500,000,000 0.100%
</TABLE>
2. The section titled "OTHER SERVICES" on Page 20 of the Statement of
Additional Information is amended in its entirety to read as follows:
OTHER SERVICES The custodian for the Funds is Norwest Bank Minnesota, N.A.,
Minneapolis, Minnesota. The sub-transfer agent for the Funds is National
Financial Data Services, Inc., Kansas City, Missouri. The Company's accountant
is McGladrey & Pullen, LLP, New York, New York. The Company's legal counsel is
Dechert Price & Rhoads, Washington DC.
