Addendum to Management Agreement between Lord Abbett Research Fund, Inc. and Lord, Abbett & Co. LLC Dated April 1, 2018

Exhibit 99.(d)(ix)

Addendum to Management Agreement

between Lord Xxxxxx Research Fund, Inc. and

Lord, Xxxxxx & Co. LLC

Dated April 1, 2018

Effective April 1, 2018, Lord, Xxxxxx & Co. LLC and Lord Xxxxxx Research Fund, Inc. on behalf of its series, Lord Xxxxxx Calibrated Dividend Growth Fund (the “Fund”), do hereby agree that the annual management fee rate for the Fund with respect to paragraph 2 of the management agreement dated June 10, 1992 (“Management Agreement”), shall be as follows:

0.55% on the first $2 billion of the Fund’s average daily net assets; and

0.49% on the Fund’s average daily net assets over $2 billion.

For purposes of Section 15(a) of the Act, this Addendum and the Management Agreement shall together constitute the investment advisory contract of the Fund.

[Signatures follow on next page]

	LORD, XXXXXX & CO. LLC
	BY:	/s/ Xxxxxxxx X. Xxxxxx
		Xxxxxxxx X. Xxxxxx
		Member and General Counsel
	LORD XXXXXX RESEARCH FUND, INC.
	BY:	/s/ Xxxxxx X. Xxxxxxxxx
		Xxxxxx X. Xxxxxxxxx
		Vice President and Assistant Secretary

Dated: April 1, 2018