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Dec. 31, 2023
Developing Growth Portfolio \| Lord Abbett Developing Growth Portfolio
The first sentence of the third paragraph under the section titled “More Information About the Funds – Principal Investment Strategies” for each of the remaining Fund’s will be replaced with the following: The Fund may invest up to 20% of its net assets in securities of foreign companies, including emerging market companies, ADRs, Global Depositary Receipts (“GDRs”), and other similar depositary receipts. *Please retain this document for your future reference.*

Dec. 31, 2023

Developing Growth Portfolio | Lord Abbett Developing Growth Portfolio

The first sentence of the third paragraph under the section titled “More Information About the Funds – Principal Investment Strategies” for each of the remaining Fund’s will be replaced with the following:

The Fund may invest up to 20% of its net assets in securities of foreign companies, including emerging market companies, ADRs, Global Depositary Receipts (“GDRs”), and other similar depositary receipts.

Please retain this document for your future reference.