BlackRock Municipal Bond Fund, Inc.
BlackRock
Short-Term Municipal Fund
(the Fund)
Class K Shares
Supplement dated October 14, 2016
to the Summary
Prospectus dated October 28, 2015
Effective as of October 14, 2016, BlackRock Advisors, LLC
(BlackRock) has agreed to add a cap on total expenses to reduce the net expenses paid by shareholders of the Fund. To achieve this expense
cap, BlackRock has agreed to waive and/or reimburse fees and/or expenses if the Funds annual fund operating expenses, excluding certain expenses
described in the prospectus, exceed a certain limit for the Funds Class K Shares. Accordingly, the Funds Summary Prospectus is amended as
follows:
The section of the Funds Summary Prospectus entitled
Key Facts About BlackRock Short-Term Municipal Fund Fees and Expenses of the Fund is deleted in its entirety and replaced with the
following:
Fees and Expenses of the Fund
This table describes the fees and expenses that you may pay if you
buy and hold Class K Shares of the Fund.
Annual Fund Operating
Expenses (expenses that you pay each year as a percentage of the value of your investment)
|
|
|
|
Class K Shares
|
Management Fee |
|
|
|
|
0.33 |
% |
Distribution and/or Service (12b-1) Fees |
|
|
|
None |
Other Expenses |
|
|
|
|
0.08 |
% |
Total Annual Fund Operating Expenses |
|
|
|
|
0.41 |
% |
Fee Waivers and/or Expense Reimbursements1 |
|
|
|
|
(0.10 |
)% |
Total Annual Fund Operating Expenses After Fee Waivers and/or Expense
Reimbursements1 |
|
|
|
|
0.31 |
% |
1 |
|
As described in the Management of the
Fund section of the Funds prospectus on page 22, BlackRock Advisors, LLC has contractually agreed to waive and/or reimburse fees or
expenses in order to limit Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements (excluding Dividend Expense, Interest
Expense, Acquired Fund Fees and Expenses and certain other Fund expenses) to 0.31% of average daily net assets through October 31, 2017. The
contractual agreement may be terminated upon 90 days notice by a majority of the non-interested directors of the BlackRock Municipal Bond Fund,
Inc. or by a vote of a majority of the outstanding securities of the Fund. |
Example:
This Example is intended to help you compare the cost of investing
in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated
and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the
Funds operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would
be:
|
|
|
|
1 Year
|
|
3 Years
|
|
5 Years
|
|
10 Years
|
Class K Shares |
|
|
|
$ |
32 |
|
|
$ |
122 |
|
|
$ |
220 |
|
|
$ |
508 |
|
Portfolio Turnover:
The Fund pays transaction costs, such as commissions, when it buys
and sells securities (or turns over its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result
in higher taxes when shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example,
affect the Funds performance. During the most recent fiscal year, the Funds portfolio turnover rate was 72% of the average value of its
portfolio.
Shareholders should retain this Supplement for future
reference.