BALANCED ALLOCATION ACCOUNT

Following is a summary of information about the Sentry Balanced Allocation Account. Investors are advised to learn key data about an investment prior to making any investment decision.

Objective

Invests solely in the Vanguard® Asset Allocation Fund. The objective of the Balanced Allocation Account is to seek long-term total return by allocating assets among stocks, bonds, and money market instruments.

The Balanced Allocation Account is available only to participants in retirement plans whose sponsors were Sentry customers on or before November 30, 2009. If this account is available in your plan, it will be included in your online enrollment and transfer forms.

Investor Profile

The Balanced Allocation Account may be suitable for investors with a long-term investment horizon who are seeking long-term growth of capital and income from dividends and interest. Individuals must be willing and able to accept meaningful changes in unit price both in the short and long-term.

Investment Strategy

The Vanguard Asset Allocation Fund invests in stocks, long-term U.S. Treasury bonds, and money market (cash) instruments. The allocation of the three types of assets changes from time to time depending on which mix appears to offer the best combination of expected returns and risk and may at any time place all of its assets in one type - stocks, bonds, or cash. To accomplish changes in allocations quickly and cost-effectively, the fund may use futures contracts instead of buying and selling securities.

Investment Considerations

The principal value of the Balanced Allocation Account is subject to fluctuation. Long-term bonds are subject to wide swings in value as interest rates rise and fall. In addition, poor allocation between stocks, bonds, and cash could result in more volatility than a typical balanced approach. Historically, timing portfolio allocations has been a difficult strategy to successfully implement on a consistent basis. The Balanced Allocation Account may be appropriate as a stand-alone investment or may be used with other Accounts to increase or decrease risk and potential return.

PORTFOLIO DATA

Asset Allocation (as of 12-31-2009)     Stocks 70.00% Bonds 30.00%   Key Facts (as of 12-31-2009)     Number of Stocks 500 Price/Earnings Ratio 30.3x Beta 3 year trailing (vs. Dow Jones Total Stock Market Index) 0.90 Number of Bonds 33 Average Duration 11.9   Top Ten Stock Holdings (as of 12-31-2009) Concentration   Range   Exxon Mobil Corp. 0 %     Microsoft Corp. 0 %     Apple Computer, Inc. 0 %     Johnson & Johnson 0 %     Procter & Gamble Co. 0 %     International Business Machines Corp. 0 %     AT&T Inc. 0 %     JPMorgan Chase & Co. 0 %     General Electric Co. 0 %     Chevron Corp. 0 %     Top Ten Equals 19.5% of Equities Top Ten Equals 11.5% of Total Net Assets   Top Sectors (as of 12-31-2009)       Information Technology 19.70 % Financials 14.30 % Health Care 12.70 % Energy 11.50 % Consumer Staples 11.40 % Industrials 10.30 % Utilities 3.70 % Materials 3.60 % Telecommunication Services 3.20 % Total % of Stocks 90.40 % Vanguard Asset Allocation Fund* Average Annual Returns Annual Total Returns (as of 02-28-2010) (as of 12-31)           1 Month 2.17%     3 Months (0.18)%     YTD 0.37%     1 year 43.05%     3 years (6.97)%     5 years (0.45)%     10 years 1.47%                                     1994       (2.32)%     1995       35.46%     1996       15.73%     1997       27.32%     1998       25.40%     1999       5.21%     2000       4.95%     2001       (5.34)%     2002       (15.38)%     2003       26.42%     2004       11.09%     2005       5.00%     2006       16.02%     2007       6.58%     2008       (36.39)%     2009       17.92%