LORD ABBETT SECURITIES TRUST AMENDMENT TO DECLARATION AND AGREEMENT OF TRUST

Exhibit 99.(a)(xxxi)

LORD XXXXXX SECURITIES TRUST

AMENDMENT TO

DECLARATION AND AGREEMENT OF TRUST

The undersigned, being at least a majority of the Trustees of Lord Xxxxxx Securities Trust, a Delaware statutory trust (the “Trust”) organized pursuant to a Declaration and Agreement of Trust dated February 26, 1993 (the “Declaration”), do hereby agree, pursuant to Section 5.3 of the Declaration, to change the name of Lord Xxxxxx Global Equity Research Fund to “Lord Xxxxxx Global Equity Fund.”

This instrument shall constitute an amendment to the Declaration and shall be effective November 1, 2021.

IN WITNESS WHEREOF, the undersigned have executed this instrument this 28th day of September 2021.

/s/Xxxxxxx X. Xxxx		/s/Xxxxx X. Xxxxxxx
Xxxxxxx X. Xxxx		Xxxxx X. Xxxxxxx
/s/Xxxxxx X. Xxxxxxxx		/s/Xxxxx Xxxxxxx Xxxxxx Xxxxxx
Xxxxxx E. Xxxxxxxx		Xxxxx Xxxxxxx Xxxxxx Xxxxxx
/s/Xxxxx X. Xxxx		/s/Xxxx Song Xxxxxxxxxx
Xxxxx A. Xxxx		Xxxx Song Xxxxxxxxxx
/s/Xxxxxxxx X. Xxxxxx		/s/Xxxx X. Xxxxxx
Xxxxxxxx X. Xxxxxx		Xxxx X. Xxxxxx
/s/Xxxxx X. XxXxxxxxx		/s/Xxxxx L.L. Xxxxxx
Xxxxx M. XxXxxxxxx		Xxxxx L.L. Xxxxxx
/s/Xxxxxxx X. Xxxxxx
Xxxxxxx X. Xxxxxx