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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No. )
Filed by the Registrant [x]
Filed by a Party other than the Registrant [ ]
Check the appropriate box:
[ ] 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 ss.240.14a-12
Pioneer Bond 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):
[ ] 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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5) Total fee paid:
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SEC 1913(04-05)
[ ] 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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4) Date Filed:
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[LOGO] PIONEER
Investments(R)
IMPORTANT INFORMATION REGARDING
YOUR INVESTMENT
PIONEER INTEREST SHARES
September 24, 2007
Dear Shareholder:
As you may know, the Board of Trustees of Pioneer Interest Shares (NYSE: MUO)
has called a Special Meeting of Shareholders to be held on October 16, 2007. At
this meeting, shareholders will be asked to approve the reorganization of your
Fund into Pioneer Bond Fund, an open-end fund with the same investment adviser,
Pioneer Investment Management, Inc., and similar investment strategies.
The Trustees believe that reorganizing your Fund into Pioneer Bond Fund offers
shareholders potential benefits and therefore recommends that you vote FOR this
proposal. Among other benefits, reorganization into an open-end fund would allow
for the future purchase or redemption of shares at net asset value, effectively
eliminating the discount at which shares of your Fund historically have traded.
Please refer to the combined proxy statement and prospectus dated August 22,
2007 for more information.
THE FUND'S RECORDS INDICATE THAT YOU HAVE YET TO VOTE ON THIS PROPOSAL. IF YOU
ARE NOT PLANNING TO ATTEND THE SPECIAL MEETING, PLEASE TAKE A MOMENT NOW TO CAST
YOUR VOTE SO THAT YOUR SHARES MAY BE REPRESENTED AT THE SPECIAL MEETING.
To vote your shares, the following voting options have been set up for your
convenience:
[GRAPHIC] 1. Vote by Touch-tone Phone. Dial 1-866-458-9858. Please be sure to
have the enclosed proxy card available at the time of the call.
[GRAPHIC] 2. Vote Through the Internet. You may cast your vote using the
Internet by logging onto www.myproxyonline.com and follow the
instructions on the website.
[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.
Another copy of your proxy ballot is enclosed for your review. Should you have
any questions regarding the meeting or the proxy material, please call
1-800-591-8238.
Thank you for your assistance with this important matter.
On Behalf of the Board of Trustees
* * * * *
Your Fund has filed a combined proxy statement and prospectus with the
Securities and Exchange Commission regarding the matters to be acted upon at the
October 16, 2007 Special Meeting. Shareholders are urged to carefully review the
proxy statement/prospectus because it contains important information. This
letter may be deemed to be solicitation material with respect to the proxy
statement/prospectus. Investors may obtain a free copy of the proxy
statement/prospectus at the Securities and Exchange Commission's website at
www.sec.gov. Investors also may obtain free copies of the proxy
statement/prospectus by calling (800) 591-8238.