High Income Municipal Bond Fund

IMPORTANT INFORMATION

Class I shares minimum initial investment of $1,000,000, unless otherwise noted, applies to certain types of institutional investors as described in the prospectus. There is no minimum initial investment for (i) purchases through or by registered investment advisers (RIAs), bank trust departments, and other financial intermediaries otherwise eligible to purchase Class I shares that charge a fee for services that include investment advisory or management services or (ii) purchases by retirement and benefit plans meeting the Class I eligibility requirements as described in the prospectus. These investment minimums may be suspended, changed, or withdrawn by Lord Abbett Distributor LLC ("Lord Abbett Distributor").

Class I shares minimum initial investment of $1,000,000, unless otherwise noted, applies to certain types of institutional investors as described in the prospectus. 

The 30-Day Standardized Yield represents net investment income earned by a fund over a 30-day period. It is expressed as an annual percentage rate using a method of calculation adopted by the Securities and Exchange Commission (SEC). Yields for other share classes will vary.

The 30-day Standardized Subsidized yields reflect fee waivers in effect. Without such fee waivers, yields would be reduced.  

The 30-day Standardized Unsubsidized yield does not reflect fee waivers.

IMPORTANT INFORMATION

A Note about Risk: The Fund invests substantially in high-yield securities which carry increased risks of price volatility, illiquidity, and the possibility of default in the timely payment of interest and principal. High-yield municipal bonds are subject to greater risk of loss of income and principal than higher-rated securities, and are likely to be more sensitive to adverse economic changes or individual municipal developments than those of higher-rated securities. In addition, because the Fund is nondiversified, it will be more exposed to risks from a single adverse economic, political, or regulatory event than a diversified fund. A portion of the income derived from the Fund's portfolio may be subject to the alternative minimum tax. Any capital gains realized may be subject to taxation. Federal, state, and local taxes may apply. There is a risk that a bond issued as tax-exempt may be reclassified by the IRS as taxable, creating taxable rather than tax-exempt income. In addition, the Fund is subject to other types of risks, such as call, credit, liquidity, interest rate, and general market risks. The Fund may invest in Puerto Rico and other U.S. territories, commonwealths, and possessions, and may be affected by local, state, and regional factors. These may include, for example, economic or political developments, erosion of the tax base, and the possibility of credit problems. These factors can affect Fund performance.

Performance data quoted is historical. Past performance is not indicative of future results. Current performance may be higher or lower than the performance quoted. The investment return and principal value of an investment in the Fund will fluctuate so that shares, on any given day or when redeemed, may be worth more or less than their original cost. To obtain performance data current to the most recent quarter-end, go to quarter ending performance on our Website or call Lord Abbett at (888) 522-2388.

CUSIP identifiers have been provided by CUSIP Global Services, managed on behalf of the American Bankers Association by Standard & Poor’s Financial Services, LLC, and are not for use or dissemination in a manner that would serve as a substitute for any CUSIP service. The CUSIP Database, © 2011 American Bankers Association. “CUSIP” is a registered trademark of the American Bankers Association.

With Sales Charge - Returns with sales charges reflect applicable fees and expenses and include all distributions reinvested.

Without Sales Charge - Returns shown are without sales charges and have all distributions reinvested. If a sales charge had been deducted, the results would have been lower.

Returns shown at less than a year reflect aggregate total returns.

Double-Digit Returns - instances of high double-digit returns were achieved primarily during favorable market conditions and may not be sustainable over time.   

Indexes reflect total return, unless otherwise specified, with all dividends reinvested. Indexes are unmanaged, do not reflect the deduction of fees or expenses, and are not available for direct investment.

The Overall Morningstar RatingTM is derived from a weighted average of the performance figures associated with a fund's three-, five-, and 10-year (as applicable) Morningstar RatingTM metrics. © Morningstar, Inc. All rights reserved. The information contained herein (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information.

Morningstar proprietary ratings reflect historical risk-adjusted performance. For each fund with at least a three-year history, Morningstar calculates a Morningstar RatingTM based on a Morningstar risk-adjusted return measure that accounts for variation in a fund's monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. Load-waived ratings do not include any front-end sales charges (which are only available for certain defined contribution plans and certain mutual fund advisory programs) and should only be considered by investors who are not subject to sales loads. Not all funds with a load-waived rating may waive their front-end load. An investor should check with their advisor to determine if they are eligible to purchase the load-waived Class A share. The top 10% of the funds in an investment category receive 5 stars, 22.5% receive 4 stars, 35% receive 3 stars, the next 22.5% receive 2 stars, and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages). The Overall Morningstar rating is a weighted average of funds' three-, five-, and 10-year (as applicable) ratings. Past performance is no guarantee of future results. Morningstar Rating is for the Class A share only; other classes may have different performance characteristics.

Lipper Category Average - Peer group averages are based on universes of funds with the same investment objectives. The average return for the peer group is based on the returns of each individual fund within the group for the period shown. This average assumes reinvestment of dividends.

Fund Expense Ratio Detail: Reflects expenses for the Fund's fiscal year-end and is subject to change. Fund expenses may fluctuate with market volatility. A substantial reduction in Fund assets (since its most recently completed fiscal year), whether caused by market conditions or significant redemptions or both, will likely cause total operating expenses (as a percentage of Fund assets) to become higher than those shown.

The net expense ratio takes into account deductions for certain interest and related expenses from certain of the Fund's investments. Under accounting rules, the Fund recognized additional income in an amount that directly offsets these interest and related expenses. Therefore, the Fund's total returns and net asset value were not affected by such interest and related expenses.

The Fund's portfolio is actively managed and is subject to change. "Other" may include municipal bonds and non-index holdings.

Dividends and Capital Gains: The information presented in this section is intended for general information and is not intended to be relied upon and should not be relied upon, as financial, legal or tax advice for any particular investor. We strongly recommend that you contact your financial, legal or tax advisor regarding your particular tax situation.

The information presented in this section is not written or intended to be used, and cannot be used, for the purpose of avoiding any tax liabilities or penalties.