SCHEDULE 14A INFORMATION
PROXY STATEMENT PURSUANT TO SECTION 14(a) OF
THE SECURITIES EXCHANGE ACT OF 1934
Filed by the Registrant [X]
Filed by a Party other than the Registrant [ ]
Check the appropriate box:
<Table>
[ ] Preliminary Proxy Statement
[ ] Confidential, for Use of the Commission Only (as
permitted by Rule 14a-6(e)(2))
[ ] Definitive Proxy Statement
[X] Definitive Additional Materials
[ ] Soliciting Material Pursuant to Section 240.14 a-12
</Table>
MUNDER SERIES TRUST
MUNDER SERIES TRUST II
THE MUNDER @VANTAGE FUND
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(Name of Registrant as Specified In Its Charter)
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(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check the appropriate box):
[X] No fee required.
[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.
(1) Title of each class of securities to which transaction applies:
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(2) Aggregate number of securities to which transaction applies:
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(3) Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee
is calculated and state how it was determined):
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(4) Proposed maximum aggregate value of transaction:
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(5) Total fee paid:
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[ ] Fee paid previously with preliminary materials.
[ ] Check box if any part of the fee is offset as provided by Exchange Act Rule
0-11(a)(2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number,
or the Form or Schedule and the date of its filing.
(1) Amount Previously Paid
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(2) Form, Schedule or Registration Statement No.:
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(3) Filing Party:
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(4) Date Filed:
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(MUNDER LOGO)
IMPORTANT NOTICE REGARDING YOUR INVESTMENT
October 9, 2006
Dear Munder Funds Shareholder:
As discussed in the proxy statement that we previously mailed to you, a Special
Meeting of Shareholders of the Munder Funds is scheduled for October 26, 2006.
As of the date of this letter, our records indicate that we have not received
your important vote.
PLEASE TAKE A MOMENT NOW TO CAST YOUR VOTE ON THE MATTERS AT HAND SO THAT YOUR
SHARES MAY BE REPRESENTED IN TIME FOR THE UPCOMING SPECIAL MEETING.
Another copy of your ballot(s) has been enclosed with this letter for your
convenience. If you have any questions regarding the proposals, please call this
toll-free number 1-800-331-7487. The following voting options have been
established for your convenience.
(Telephone graphic) 1. VOTE BY TOUCH-TONE PHONE. You may cast your vote
anytime by telephone by calling 1-866-437-4672 and
following the instructions.
(Computer graphic) 2. VOTE THROUGH THE INTERNET. You may cast your vote
anytime using the Internet by logging onto
WWW.MYPROXYONLINE.COM and following the instructions
on the website.
(Envelope graphic) 3. VOTE BY MAIL. You may cast your vote by signing,
dating and mailing the enclosed proxy ballot(s) in
the postage-prepaid return envelope provided. We
recommend, however, that you utilize one of the
internet or telephone options to ensure that your
response is received in time for the Special Meeting
on October 26, 2006.
(Telephone graphic) 4. TALK TO A REPRESENTATIVE. You may cast your vote by
calling one of our representatives on our toll-free
proxy hotline at 1-800-331-7487. Representatives are
available to record your vote Monday through Friday
9:00 a.m. to 10:00 p.m. Eastern Time.
PLEASE UTILIZE ONE OF THE OPTIONS ABOVE TO VOTE YOUR SHARES TODAY.
Again, please do not hesitate to CALL TOLL-FREE 1-800-331-7487 if you have any
questions regarding this proxy solicitation. If you have voted since the mailing
of this letter, we apologize for the follow-up mailing and thank you for your
participation. Thank you for your assistance with this important matter.
Sincerely,
/S/ John S. Adams
- -----------------------------------------
(signature)
John S. Adams
President and Principal Executive Officer
The Munder Funds
(MUNDER LOGO)
IMPORTANT NOTICE REGARDING YOUR INVESTMENT
October 9, 2006
Dear Munder Funds Shareholder:
As discussed in the proxy statement that we previously mailed to you, a Special
Meeting of Shareholders of the Munder Funds is scheduled for October 26, 2006.
As of the date of this letter, our records indicate that we have not received
your important vote.
PLEASE TAKE A MOMENT NOW TO CAST YOUR VOTE ON THE MATTERS AT HAND SO THAT YOUR
SHARES MAY BE REPRESENTED IN TIME FOR THE UPCOMING SPECIAL MEETING.
Another copy of your ballot(s) has been enclosed with this letter for your
convenience. If you have any questions regarding the proposals, please call this
toll-free number 1-800-331-7487. The following voting options have been
established for your convenience:
(Telephone graphic) 1. VOTE BY TOUCH-TONE PHONE. You may cast your vote
anytime by telephone by calling the toll-free number
found on the enclosed proxy ballot(s).
(Computer graphic) 2. VOTE THROUGH THE INTERNET. You may cast your vote
using the Internet by logging onto WWW.PROXYVOTE.COM
and following the instructions on the website.
(Envelope graphic) 3. VOTE BY MAIL. You may cast your vote by signing,
dating and mailing the enclosed proxy ballot(s) in
the postage-prepaid return envelope provided. We
recommend, however, that you utilize one of the
internet or telephone options to ensure that your
response is received in time for the Special Meeting
on October 26, 2006.
(Telephone graphic) 4. TALK TO A REPRESENTATIVE. You may cast your vote by
calling one of our representatives on our toll-free
proxy hotline at 1-800-331-7487. Representatives are
available to record your vote Monday through Friday
9:00 a.m. to 10:00 p.m. Eastern Time.
PLEASE UTILIZE ONE OF THE OPTIONS ABOVE TO VOTE YOUR SHARES TODAY.
Again, please do not hesitate to CALL TOLL-FREE 1-800-331-7487 if you have any
questions regarding this proxy solicitation. If you have voted since the mailing
of this letter, we apologize for the follow-up mailing and thank you for your
participation. Thank you for your assistance with this important matter.
Sincerely,
/S/ John S. Adams
- -----------------------------------------
(signature)
John S. Adams
President and Principal Executive Officer
The Munder Funds
(MUNDER LOGO)
IMPORTANT NOTICE REGARDING YOUR INVESTMENT
October 9, 2006
Dear Munder Funds Shareholder:
As discussed in the proxy statement that we previously mailed to you, a Special
Meeting of Shareholders of the Munder Funds is scheduled for October 26, 2006.
As of the date of this letter, our records indicate that we have not received
your important vote.
PLEASE TAKE A MOMENT NOW TO CAST YOUR VOTE ON THE MATTERS AT HAND SO THAT YOUR
SHARES MAY BE REPRESENTED IN TIME FOR THE UPCOMING SPECIAL MEETING.
Another copy of your ballot(s) has been enclosed with this letter for your
convenience. Should you have any questions regarding the proposal, please call
this toll-free number 1-800-331-7487. The following voting options have been
established for your convenience.
(Telephone graphic) 1. VOTE BY TOUCH-TONE PHONE. You may cast your vote by
telephone by calling the toll-free number found on
the enclosed proxy ballot(s).
(Computer graphic) 2. VOTE THROUGH THE INTERNET. You may cast your vote
using the Internet by logging onto WWW.PROXYVOTE.COM
and following the instructions on the website.
(Envelope graphic) 3. VOTE BY MAIL. You may cast your vote by signing,
dating and mailing the enclosed proxy ballot(s) in
the postage-prepaid return envelope provided. If
convenient for you, PLEASE utilize one of the first
two options above to ensure that your response is
received in time for the Special Meeting on October
26, 2006.
PLEASE UTILIZE ONE OF THE OPTIONS ABOVE TO VOTE YOUR SHARES TODAY.
Again, please do not hesitate to CALL TOLL-FREE 1-800-331-7487 if you have any
questions regarding this matter. If you have voted since the mailing of this
letter, we apologize for the follow up mailing and thank you for your
participation. Thank you for your assistance with this important matter.
Sincerely,
/S/ John S. Adams
- -----------------------------------------
(signature)
John S. Adams
President and Principal Executive Officer
The Munder Funds