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 Fund’s operating expenses remain the same. Class C shares automatically convert to Class A shares after eight years. The expense example for Class C shares for the ten-year period reflects the conversion to Class A shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Under normal conditions, the Fund pursues its investment objective by investing at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in floating or adjustable rate instruments and derivatives and other instruments that effectively enable the Fund to achieve a floating rate of income. The floating or adjustable rate instruments in which the Fund may invest include, but are not limited to:

· senior secured or unsecured floating rate loans or debt;

· second lien or other subordinated secured or unsecured floating rate loans or debt; and

· floating-rate structured (or securitized) products, including collateralized loan obligations.

The other instruments that effectively enable the Fund to achieve a floating rate of income may include, but are not limited to:

· fixed-rate loans or debt with respect to which the Fund has entered into derivative instruments to effectively convert the fixed-rate interest payments into floating or adjustable rate interest payments;

· exchange-traded funds or notes that provide exposure to floating or adjustable rate loans or obligations; and

· money market investment companies.

The Fund may invest in senior and subordinated loans or debt securities of any maturity or credit quality, including, without limitation, those rated below investment grade by a rating agency or, if unrated, determined by Lord, Abbett & Co. LLC (“Lord Abbett”) to be of comparable quality. Below investment grade securities are commonly referred to as “high-yield” or “junk” bonds and are speculative in nature.

The Fund may invest up to 20% of its net assets in other types of debt securities and short-term instruments, including corporate debt securities and repurchase agreements. For the purposes of this limitation, where the Fund has entered into a derivatives instrument or other transaction intended to effectively convert fixed-rate interest payments on a debt security into floating or adjustable rate interest

payments, the value of the Fund’s investment in the fixed-rate debt security underlying the derivative instrument will not be counted towards this 20% limitation.

The Fund may invest in non-U.S. dollar-denominated loans or securities. The Fund may invest up to 25% of its total assets in loans and securities issued by issuers organized in a country outside of the U.S. or economically tied to a country outside of the U.S., including in emerging markets. The Fund will deem an issuer to be economically tied to a non-U.S. country by looking at a number of factors, including its country of domicile, the primary stock exchange on which it trades, the location from which the majority of its revenue comes, and its reporting currency. The Fund will not invest more than 25% of its total assets in any industry; however, this limitation does not apply to mortgage-backed securities, privately issued mortgage-related securities, or securities issued by the U.S. Government, its agencies and instrumentalities.

The Fund may invest in derivative instruments. Currently, the Fund expects to invest in derivatives consisting principally of futures, forwards, options, and swaps. The Fund may use derivatives to seek to enhance returns; to attempt to hedge elements of its investment risk, on both a security- or portfolio-level basis; to manage portfolio duration; as a substitute for holding the underlying asset on which the derivative instrument is based; to effectively convert the fixed-rate interest payments of a debt security held by the Fund into floating or adjustable rate interest payments; or for cash management purposes.

The portfolio management team conducts fundamental research by analyzing industry and issuer specific data and performing quantitative and qualitative credit research. The portfolio management team’s portfolio construction process is based on positioning across the credit quality spectrum, seeking to maximize favorable industries, and selecting loans with attractive structural features. The portfolio management team seeks to reduce risk through portfolio diversification, credit analysis, assessment of risk/return potential, and attention to current developments and trends in interest rates and economic conditions.

The Fund may sell a security when the Fund believes the security is less likely to benefit from the current market and economic environment, or shows signs of deteriorating fundamentals, among other reasons. The Fund may deviate from the investment strategy described above for temporary defensive purposes. The Fund may miss certain investment opportunities if defensive strategies are used and thus may not achieve its investment objective.

PRINCIPAL RISKS

As with any investment in a mutual fund, investing in the Fund involves risk, including the risk that you may receive little or no return on your investment. When you redeem your shares, they may be worth more or less than what you paid for them, which means that you may lose a portion or all of the money you invested in the Fund. The principal risks of investing in the Fund, which could adversely affect its performance, include:

· Market Risk: The market values of securities will fluctuate, sometimes sharply and unpredictably, based on overall economic conditions, governmental actions or intervention, market disruptions caused by trade disputes, tariffs or other factors, political developments, and other factors. Prices of equity securities tend to rise and fall more dramatically than those of debt securities.

· Credit Risk: Debt securities are subject to the risk that the issuer or guarantor of a security may not make interest and principal payments as they become due or may default altogether. In addition, if the market perceives a deterioration in the creditworthiness of an issuer, the value and liquidity of securities issued by that issuer may decline. To the extent that the Fund holds below investment grade securities, these risks may be heightened. Insured debt securities have the credit risk of the insurer in addition to the credit risk of the underlying investment being insured.

· Loan Risk: Investments in floating or adjustable rate loans are subject to increased credit and liquidity risks. Loan prices also may be adversely affected by supply-demand imbalances caused by conditions in the loan market or related markets. Below investment grade loans, like high-yield debt securities, or junk bonds, usually are more credit sensitive than interest rate sensitive, although the value of these instruments may be affected by interest rate swings

in the overall fixed income market. Loans may be subject to structural subordination and may be subordinated to other obligations of the borrower or its subsidiaries.

· Mortgage-Related and Other Asset-Backed Securities Risk: Mortgage-related securities, including commercial mortgage-backed securities (“CMBS”) and other privately issued mortgage-related securities, and other asset-backed securities may be particularly sensitive to changes in prevailing interest rates and economic conditions, including delinquencies and defaults. The prices of mortgage-related and other asset-backed securities, depending on their structure and the rate of payments, can be volatile. They are subject to prepayment risk (higher than expected prepayment rates of mortgage obligations due to a fall in market interest rates) and extension risk (lower than expected prepayment rates of mortgage obligations due to a rise in market interest rates). These risks increase the Fund’s overall interest rate risk. Some mortgage-related securities receive government or private support, but there is no assurance that such support will remain in place.

· Fixed Income Securities Risk: The Fund is subject to the general risks and considerations associated with investing in debt securities, including the risk that issuers will fail to make timely payments of principal or interest or default altogether. Lower-rated securities in which the Fund may invest may be more volatile and may decline more in price in response to negative issuer

developments or general economic news due to their increased credit risk relative to other fixed-income investments. In addition, as interest rates rise, the Fund’s investments typically will lose value. Fiscal, economic, monetary, or other governmental policies or measures have in the past—and may in the future—cause or exacerbate interest rate risks.

· Collateralized Loan Obligations and Other Collateralized Obligations Risk: An investment in a CLO can be viewed as investing in (or through) another investment adviser and is subject to the layering of fees associated with such an investment. The risks of investing in a CLO generally can be summarized as a combination of economic risks of the underlying loans combined with the risks associated with the CLO structure governing the priority of payments, and include interest rate risk, credit risk, liquidity risk, prepayment risk, and the risk of default of the underlying asset, among others.

· Government Securities Risk: The Fund invests in securities issued or guaranteed by the U.S. Government or its agencies and instrumentalities (such as the Government National Mortgage Association (“Ginnie Mae”), the Federal National Mortgage Association (“Fannie Mae”), or the Federal Home Loan Mortgage Corporation (“Freddie Mac”)). Different types of U.S. government securities are subject to different levels of credit risk, including the risk of default, depending on the nature of the particular government support for that security. Unlike Ginnie Mae securities, securities issued or guaranteed by U.S. Government-related organizations, such as Fannie Mae and Freddie Mac, are not backed by the full faith and credit of the U.S. Government and no assurance can be given that the U.S. Government would provide financial support. Past long-term U.S. credit rating downgrades have introduced greater uncertainty about the ability of the United States to repay its obligations. The value of the Fund’s shares may be adversely affected by any future rating agency downgrades.