Form 497 LORD ABBETT INVESTMENT

June 18, 2026 3:36 PM EDT

LORD ABBETT INVESTMENT TRUST

Lord Abbett Total Return Fund

 

Supplement dated June 18, 2026 to the

Summary Prospectus and Statement of Additional Information, each dated

April 1, 2026, and Prospectus dated April 1, 2026, as revised April 24, 2026

 

The following table replaces the table in the subsection under “Management—Portfolio Managers” on page 12 of the summary prospectus and page 152 of the statutory prospectus:

  Portfolio Managers/Title Member of the Portfolio
Management Team Since
Robert A. Lee, Partner and Co-Head of Taxable Fixed Income 1998
Andrew H. O’Brien, Partner and Portfolio Manager 1998
Steven F. Rocco, Partner and Co-Head of Taxable Fixed Income 2013
Leah G. Traub, Partner and Portfolio Manager 2021
Adam C. Castle, Partner and Portfolio Manager and Head of Securitized Credit 2021
Karen J. Gunnerson, Senior Managing Director and Portfolio Manager 2024
Yoana N. Koleva, Partner and Portfolio Manager 2025

 

The following paragraph replaces the fifteenth paragraph under “Management and Organization of the Funds” beginning on page 279 of the statutory prospectus:

Total Return Fund. Robert A. Lee, Partner and Co-Head of Taxable Fixed Income, heads the Fund’s team. Mr. Lee joined Lord Abbett in 1997. Additional members of the Fund’s team are Andrew H. O’Brien, Partner and Portfolio Manager, Steven F. Rocco, Partner and Co-Head of Taxable Fixed Income, Leah G. Traub, Partner and Portfolio Manager, Adam C. Castle, Partner and Head of Securitized Credit, Karen J. Gunnerson, Senior Managing Director and Portfolio Manager, and Yoana N. Koleva, Partner and Portfolio Manager. Messrs. O’Brien, Rocco, Castle, and Mses. Traub, Gunnerson, and Koleva joined Lord Abbett in 1998, 2004, 2015, 2007, 2017, and 2011, respectively. Messrs. Lee, O’Brien, Rocco, Castle, and Mses. Traub, Gunnerson, and Koleva are jointly and primarily responsible for the day-to-day management of the Fund.

 

The following rows replace the applicable rows of the corresponding table under the heading “Total Return Fund” in the subsection titled “Portfolio Manager Information—Other Accounts Managed” on page 7-3 of the statement of additional information (“SAI”):

 

  Number of Registered Investment Companies

 

 

Total Assets ($MM)

Number of Other Pooled Investment Vehicles

 

 

Total Assets ($MM)

 

 

Number of Other Accounts

 

 

 

Total Assets ($MM)

Total Return Fund            
  Robert A. Lee1 18  96,104.81 11  12,482.07 1291  6,688.20
  Andrew H. O’Brien 15  99,715.53 8  12,205.96 22  4,242.88
  Steven F. Rocco 20  100,003.88 13  12,175.83 10  3,832.17
  Leah G. Traub 6  10,876.92 2  1,561.24 601  251.77
  Adam C. Castle 13  75,146.98 7  11,728.66 0 0
               

 

 

 

 

  Number of Registered Investment Companies

 

 

Total Assets ($MM)

Number of Other Pooled Investment Vehicles

 

 

Total Assets ($MM)

 

 

Number of Other Accounts

 

 

 

Total Assets ($MM)

Total Return Fund            
  Karen J. Gunnerson 5  10,100.07 3  2,512.35 0 0
  Yoana N. Koleva 12  78,267.46 1  1,833.52 1  84.52
               

1 Included in the number of other accounts and total assets are two accounts with respect to which the management fee is based on the performance of the account; such accounts total approximately $1,447.1 million in assets.

 

The following rows replace the applicable rows of the corresponding table under the heading “Total Return Fund” in the subsection titled “Portfolio Manager Information—Holdings of Portfolio Managers” on page 7-5 of the SAI:

 

Ownership of Securities Aggregate Dollar Range of Securities
Total Return Fund  
Robert A. Lee Over $1,000,000
Andrew H. O’Brien $10,001-$50,000
Steven F. Rocco $10,001-$50,000
Leah G. Traub $50,001-$100,000
Adam C. Castle $10,001-$50,000
Karen J. Gunnerson $10,001-$50,000
Yoana N. Koleva $10,001-$50,000

 

Capitalized terms used in this Supplement shall, unless otherwise defined herein, have the same meaning as given in the Prospectuses and/or SAIs.

 

 

Please retain this document for your future reference.

 

 

 

 



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