Mid Cap Growth Stock 

Fund Overview
Adviser: Mason Street Advisors, LLC
Sub-adviser: William Blair & Company, LLC
Objective/Focus: Invests in stocks of mid-sized companies selected for their above-average growth potential. The objective is long-term capital growth.
Asset Class: Mid-Cap Stocks
Style: Growth
Investing in small company stocks involves a greater degree of risk than investing in medium or large company stocks.
Investing in medium company stocks involves a greater degree of risk than investing in large company stocks.
Fund Facts as of 12/31/13
Fund Inception 12-12-1990
First Available for Variable Annuity 12-03-1990
First Available for Variable Life 05-03-1994
Net Assets $1.07 Billion
Top 10 Portfolio Holdings % of Net Assets
Dick's Sporting Goods, Inc. 3.1%
Mead Johnson Nutrition Co. 2.9%
O'Reilly Automotive, Inc. 2.9%
Equifax, Inc. 2.5%
Dollar General Corp. 2.5%
IDEXX Laboratories, Inc. 2.4%
Green Mountain Coffee Roasters, Inc. 2.4%
HMS Holdings Corp. 2.4%
Stericycle, Inc. 2.4%
Citrix Systems, Inc. 2.3%
Total % of Net Assets 25.8%
Download Publicly Disclosed Holdings
Sector Weightings % of Equities
Information Technology 23.7%
Consumer Discretionary 20.7%
Industrials 19.2%
Health Care 13.5%
Financials 7.3%

You should carefully consider the investment objectives, risks, expenses and charges of the investment company before you invest. Your Northwestern Mutual Investment Services Registered Representative can provide you with a contract and fund prospectus that will contain the information noted above, and other important information that you should read carefully before you invest or send money.

Mason Street Advisors, LLC (MSA), a wholly owned company of Northwestern Mutual, is a federally registered investment adviser. Mason Street Advisors, LLC (MSA) is the principal investment adviser for all the Portfolios in the Northwestern Mutual Series Fund (Series Fund) (NMSF). (Portfolios in the Series Funds are identified by the parenthetical next to the portfolio name.) MSA has engaged and oversees sub-advisers who provide day-to-day management for certain of the Series Fund Portfolios. Each sub-adviser may be replaced without the approval of shareholders. Please see the prospectus for more information. Additional fund options are advised by Russell Investments, Fidelity Investments® and Neuberger Berman Management, LLC.

All securities are offered through Northwestern Mutual Investment Services LLC, (NMIS), Subsidiary of Northwestern Mutual and member FINRA and SIPC.

NMFN-VA15 (0309)