NORTHWESTERN MUTUAL SERIES FUND, INC.

NORTHWESTERN MUTUAL SERIES FUND, INC.

000 Xxxx Xxxxxxxxx Xxxxxx

Milwaukee, Wisconsin 53202

November 1, 2013

Xxxxx Street Advisors, LLC

000 Xxxx Xxxxxxxxx Xxxxxx

Milwaukee, WI 53202

Re: Agreement to Waive Xxxxx Street Advisors, LLC Investment Advisory Fees Relating to the Focused Appreciation Portfolio

Gentlemen:

This letter constitutes an agreement between Xxxxx Street Advisors, LLC (“MSA”) and Northwestern Mutual Series Fund, Inc. regarding the investment advisory fee for the Focused Appreciation Portfolio (“Portfolio”). Effective as of November 21, 2013, and ending on April 30, 2014 (unless renewed or superseded by the parties hereto), MSA agrees to waive its investment advisory fee for the Portfolio such that the investment advisory fee is as follows:

Assets		Fee
First $100 million		0.66%
Next $400 million		0.61%
Excess over $500 million		0.60%

This letter supersedes all prior agreements between the parties relating to the same matters.

Very truly yours,
NORTHWESTERN MUTUAL SERIES FUND, INC.
By:		/s/ XXXX X. XXXXXXX
Name:		Xxxx X. Xxxxxxx
Title:		President

Agreed to and accepted:

XXXXX STREET ADVISORS, LLC
By:		/s/ XXXXXXXXX X. XXXXXXXXX
Name:		Xxxxxxxxx X. XxXxxxxxx
Title:		President