High Yield Municipal Bond Fund (HYMAX) - Class A

Important Information
Maximum Offering Price (MOP) - Returns with sales charges reflect applicable fees and expenses and include all distributions reinvested.
Net Asset Value (NAV) - Returns shown at net asset value 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.
Instances of high double-digit returns were achieved primarily during favorable market conditions and may not be sustainable over time.

Class A- Except as noted below, returns with sales charges reflect a maximum sales charge of 5.75% for equity and strategic allocation funds, 4.75% for Lord Abbett Bond Debenture Fund, and 2.25% for all tax-free income funds and taxable fixed income funds (except for Lord Abbett Bond Debenture Fund). There are also ongoing 12b-1 service fees (and, in certain cases, distribution fees).

Class A Shares purchased subject to a front-end sales charge have no contingent deferred sales charge (CDSC). However, certain purchases of Class A shares made without a front-end sales charge may be subject to a CDSC of 1% if the shares are redeemed before the first day of the month in which the one year anniversary of the purchase falls. The CDSC is not reflected in the performance with maximum sales charge.

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 higherrated securities. 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. These factors can affect Fund performance.

The Barclays Municipal Bond Index is a rules-based, market-value-weighted index engineered for the long-term tax-exempt bond market. The index is a broad measure of the municipal bond market with maturities of at least one year. To be included in this index, bonds must have a minimum credit rating of at least Baa, an outstanding par value of at least $7 million and be issued as part of a transaction of at least $75 million. The bonds must be fixed rate, have a dated-date after December 31, 1990, and must be at least one year from their maturity date. Remarketed issues, taxable municipal bonds, bonds with floating rates, and derivatives, are excluded from the index.

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

Expense Ratio Details
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.

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.

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.

Expense ratio: Lipper category average reflects the average expenses of Class A shares of all funds with in the peer group based on Lipper data available.

¹ The Fund’s dividend yield is shown without sales charges (at NAV) and with maximum sales charges (at MOP). The Fund’s dividend yield takes into account any fee waiver or expense limitation arrangements, if any. Without such fee waivers or expense limitation arrangements, the Fund’s dividend yield would have been lower. Information regarding any fee waivers or expense limitation arrangements applicable to the Fund is provided with the Fund’s expense ratio information.

² The Fund’s unsubsidized dividend yield is shown without sales charges (at NAV) and with maximum sales charges (at MOP). The Fund’s unsubsidized dividend yield reflects what the yield would have been without the affect of fee waivers or expense limitation arrangements.