Summary Prospectus
March 30, 2012

Loomis Sayles Capital Income Fund Ticker Symbol: Class A (LSCAX), Class C (LSCCX) and Class Y (LSCYX)

Before you invest, you may want to review the Fund’s Prospectus, which contains more information about the Fund and its risks. You can find the Fund’s Prospectus and other information about the Fund online at ngam.natixis.com/funddocuments. You can also get this information at no cost by calling 800-225-5478 or by sending an e-mail request to NatixisFunds@ngam.natixis.com. The Fund’s Prospectus and Statement of Additional Information, each dated March 30, 2012 are incorporated by reference into this Summary Prospectus.

Investment Goal The Fund’s investment goal is high total return through a combination of current income and capital appreciation. Fund Fees & Expenses The following table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Natixis Fund Complex. More information about these and other discounts is available from your financial professional and in the section “How Sales Charges Are Calculated” on page 35 of the Prospectus and on page 91 in the section “Reduced Sales Charges” of the Statement of Additional Information (“SAI”).

Shareholder Fees(fees paid directly from your investment)	Class A	Class C	Class Y
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	5.75%	None	None
Maximum deferred sales charge (load) (as a percentage of original purchase price or redemption proceeds, as applicable)	None	1.00%	None
Redemption fees	None	None	None

Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment)	Class A	Class C	Class Y
Management fees	0.60%	0.60%	0.60%
Distribution and/or service (12b-1) fees	0.25%	1.00%	0.00%
Other expenses (estimated for the current fiscal year)	0.47%	0.47%	0.47%
Total annual fund operating expenses	1.32%	2.07%	1.07%
Fee waiver and/or expense reimbursement1	0.12%	0.12%	0.12%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	1.20%	1.95%	0.95%

Example This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same, except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement for the first year and on the Total Annual Fund Operating Expenses for the remaining years. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	Class A	Class C		Class Y
		If shares are redeemed	If shares are not redeemed
1 year	$690	$298	$198	$97
3 years	$958	$637	$637	$328

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1 Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.20%, 1.95% and 0.95% of the Fund’s average daily net assets for Class A, C and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2013 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Fund’s Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below 1.20%, 1.95% and 0.95% of the Fund’s average daily net assets for Class A, C and Y shares, respectively. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes for you if your Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund’s performance. Investments, Risks and Performance Principal Investment Strategies Under normal market conditions, the Fund will invest at least 70% of its assets in equity securities (the “equity portion”). Equity securities purchased by the Fund may include common stocks, preferred stocks and convertible securities, including, among others, warrants, convertible debt securities and convertible preferred stock. A significant majority of the equity securities purchased by the Fund will be traded on a U.S. exchange and denominated in U.S. dollars. The Fund’s non-U.S. equity investments, which will consist generally of American Depositary Receipts but may include direct foreign investments as well, will be limited to 10% of the equity portion. Although certain of the equity securities purchased by the Fund may be issued by domestic companies incorporated outside of the United States, the Adviser does not consider these securities to be foreign if they are included in U.S. equity indices published by Standard & Poor’s or Russell Investments. The Fund expects that under normal market conditions a part of the equity portion will include income-producing equity securities. The Fund may invest up to 30% of its assets in fixed-income securities, including below investment-grade fixed-income securities (commonly known as “junk bonds”), corporate debt and government and agency fixed-income securities (the “fixed-income portion”). Below investment-grade fixed-income securities are rated below investment grade quality, i.e., none of the three major ratings agencies (Moody’s Investors Services, Inc., Fitch Investor Services, Inc. or Standard & Poor’s Ratings Group) have rated the securities in one of their respective top four ratings categories, or, in the absence of a rating by an agency, the Adviser has determined that the securities are of comparable quality to rated securities that the Fund may purchase. Up to 40% of the fixed-income portion of the Fund may be non-U.S. dollar denominated and up to 20% of the fixed-income portion of the Fund may be invested in a single country or currency; however, these restrictions do not apply to investments in Canadian or U.S. fixed-income securities. The Fund may invest in securities of any maturity, market capitalization and credit quality. The Adviser may shift the Fund’s assets among various types of income-producing securities based upon changing market conditions and security-specific opportunities. The asset allocation shifts will be based on several criteria, such as the attractiveness of each asset class as determined by the Adviser, the security-specific valuations and yield opportunities discovered within each asset class and the ability of an asset class to provide diversification and attractive risk characteristics to the portfolio. When assessing the investment opportunity of a particular company, the Adviser has the flexibility to consider the entire range of securities across the company’s capital structure, including equities, preferred stock, convertible bonds and bonds. The Adviser will strive for a reasonable amount of income through bond yields, stock dividends and other income-enhancing strategies. In deciding which equity securities to buy and sell, the Adviser seeks to identify companies that it believes are, among other things, attractively valued based on the Adviser’s estimate of intrinsic value, with additional consideration given to dividend yield. The Adviser generally seeks to find value by selecting individual stocks that it believes are attractive, rather than by attempting to achieve investment growth by rotating the Fund’s holdings among various sectors of the economy. In deciding which fixed income securities to buy and sell, the Adviser may consider a number of factors related to the bond issue and the current bond market, for example, the stability and volatility of a country’s bond markets, the financial strength of the issuer, current interest rates, the Adviser’s expectations regarding general trends in interest rates and currency considerations. The Adviser will also consider how purchasing or selling a bond would impact the overall portfolio’s risk profile (for example, its sensitivity to currency risk, interest rate risk and sector-specific risk) and potential return (income and capital gains). The Fund may also invest in Rule 144A securities and may purchase and sell (write) options for hedging and investment purposes. Except as provided above, the Fund is not limited in the percentage of its assets that it may invest in these instruments. Principal Risks The principal risks of investing in the Fund are summarized below. The Fund does not represent a complete investment program. You may lose money by investing in the Fund. Allocation Risk: The Fund’s investment performance depends on how its assets are allocated. The allocation, as set forth above, may not be optimal in every market condition. You could lose money on your investment in the Fund as a result of this allocation.

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Below Investment-Grade Fixed-Income Securities Risk: This is the risk that the Fund’s investments in below investment-grade fixed-income securities, also known as “junk bonds,” may be subject to greater risks than other fixed-income securities, including being subject to greater levels of interest rate risk, credit risk (including a greater risk of default) and liquidity risk. The ability of the issuer to make principal and interest payments is predominantly speculative for below investment-grade fixed-income securities. Credit Risk: Credit risk is the risk that the issuer or the guarantor of a fixed-income security, or the counterparty to a derivatives or other transaction, will be unable or unwilling to make timely payments of interest or principal or to otherwise honor its obligations. Below investment-grade fixed-income securities are considered predominantly speculative with respect to the ability of the issuer to make timely principal and interest payments. Currency Risk: Fluctuations in the exchange rates between different currencies may negatively affect an investment. The Fund may elect not to hedge currency risk, or may hedge such risk imperfectly, which may cause the Fund to incur losses that would not have been incurred had the risk been hedged. Equity Securities Risk: The value of the Fund’s investments in equity securities could be subject to unpredictable declines in the value of individual securities and periods of below-average performance in individual securities or in the equity market as a whole. Rule 144A securities may be less liquid than other equity securities. Value stocks can perform differently from the market as a whole and from other types of stocks. Value stocks also present the risk that their lower valuations fairly reflect their business prospects and that investors will not agree that the stocks represent favorable investment opportunities, and they may fall out of favor with investors and underperform growth stocks during any given period. In the event an issuer is liquidated or declares bankruptcy, the claims of owners of the issuer’s bonds and preferred stock generally take precedence over the claims of those who own common stock. Fixed-Income Securities Risk: Fixed-income securities are subject to credit risk, interest rate risk and liquidity risk. You may lose money on your investment due to unpredictable drops in a security’s value or periods of below-average performance in a given security or in the securities market as a whole. In addition, an economic downturn or period of rising interest rates could adversely affect the market of these securities and reduce the Fund’s ability to sell them. Below investment-grade fixed-income securities (commonly known as “junk bonds”) may be subject to these risks to a greater extent than other fixed-income securities. Rule 144A securities may be more illiquid than other fixed-income securities. Foreign Securities Risk: Investments in foreign securities may be subject to greater political, economic, environmental, credit and information risks. The Fund’s investments in foreign securities are also subject to foreign currency fluctuations. Foreign securities may be subject to higher volatility than U.S. securities, varying degrees of regulation and limited liquidity. Interest Rate Risk: Changes in interest rates may cause the value of the Fund’s investments to decrease. Generally, the value of fixed-income securities rises when prevailing interest rates fall and falls when interest rates rise. A period of low interest rates may cause the Fund to have a low or negative yield, potentially reducing the value of your investment. Issuer Risk: The value of the Fund’s investments may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer’s goods and services. Liquidity Risk: Liquidity risk exists when particular investments are difficult to purchase or sell, possibly preventing the Fund from selling these illiquid securities at an advantageous price or time. A lack of liquidity also may cause the value of investments to decline. Illiquid investments also may be difficult to value. Management Risk: A strategy used by the Fund’s portfolio managers may fail to produce the intended result. Market Risk: The market value of a security will move up and down, sometimes rapidly and unpredictably, based upon a change in an issuer’s financial condition, as well as overall market and economic conditions. Options Risk: The value of the Fund’s positions in options will fluctuate in response to changes in the value of the underlying security. Writing call options can reduce the risk of owning stocks, but it limits the opportunity to profit from an increase in the market value of stocks in exchange for up-front cash at the time of selling the call option. When the Fund writes a put option, it assumes the risk that it may be required to purchase the underlying security for a price that is higher than prevailing market price, resulting in a loss. The Fund also risks losing all or part of the cash paid for purchasing put options. Unusual market conditions or the lack of a ready market for any particular option at a specific time may reduce the effectiveness of the Fund’s option strategies, and for these and other reasons the Fund’s use of options may not achieve the Fund’s investment objectives to the extent desired. Valuation Risk: This is the risk that the Fund has valued certain securities at a higher price than the price at which they can be sold. This risk may be especially pronounced for investments that may be illiquid or may become illiquid. Risk/Return Bar Chart and Table Because the Fund is new and has not yet completed a full calendar year, information related to Fund performance, including a bar chart showing annual returns, has not been included in this Prospectus. The performance information provided by the Fund in the future will give some indication of the risks of an investment in the Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns compare against those of a broad measure of market performance.

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Management Investment Adviser Loomis, Sayles & Company, L.P. Portfolio Managers Arthur Barry, CFA, Vice President of the Adviser, has served as co-portfolio manager of the Fund since 2012. Daniel J. Fuss, CFA, Vice Chairman, Director and Managing Partner of the Adviser, has served as co-portfolio manager of the Fund since 2012. Kathleen C. Gaffney, CFA, Vice President of the Adviser, has served as co-portfolio manager of the Fund since 2012. Warren N. Koontz, CFA, Vice President of the Adviser, has served as co-portfolio manager of the Fund since 2012. Purchase and Sale of Fund Shares Class A and C Shares The following chart shows the investment minimums for various types of accounts:

Type of Account	Minimum Initial Purchase	Minimum Subsequent Purchase
Any account other than those listed below	$2,500	$100
For shareholders participating in Natixis Funds’ Investment Builder Program	$1,000	$50
For Traditional IRA, Roth IRA, Rollover IRA, SEP-IRA and Keogh plans using the Natixis Funds’ prototype document (direct accounts, not held through intermediary)	$1,000	$100
Coverdell Education Savings Accounts	$500	$100

Class Y Shares Class Y shares of the Fund may be purchased by the following entities at the following investment minimums. A minimum initial investment of $100,000 and the minimum subsequent investment of $100 for:

• Other mutual funds, endowments, foundations, bank trust departments or trust companies.

There is no initial or subsequent investment minimum for:

• Wrap Fee Programs of certain broker-dealers, the advisers or NGAM Distribution, L.P. (the “Distributor”). Please consult your financial representative to determine if your wrap fee program is subject to additional or different conditions or fees.
• Retirement Plans such as 401(a), 401(k) or 457 plans.
• Certain Individual Retirement Accounts if the amounts invested represent rollover distributions from investments by any of the retirement plans invested in the Fund as set forth above.
• Registered Investment Advisers investing on behalf of clients in exchange for an advisory, management or consulting fee.
• Fund Trustees, former Fund trustees, employees of affiliates of the Natixis Funds and other individuals who are affiliated with any Natixis Fund (this also applies to any spouse, parents, children, siblings, grandparents, grandchildren and in-laws of those mentioned) and Natixis affiliate employee benefit plans.

Due to operational limitations at your financial intermediary, certain wrap fee programs, retirement plans, individual retirement accounts and accounts of registered investment advisers may be subject to the investment minimums described above. Please consult your financial representative for more information. At the discretion of Loomis Sayles, employees and clients of Loomis Sayles may purchase Class Y shares of the Fund below the stated minimums. At the discretion of NGAM Advisors, L.P. (“NGAM Advisors”), clients of NGAM Advisors and its affiliates may purchase Class Y shares of the Fund below the stated minimums. The Fund’s shares are available for purchase (and are redeemable on any business day) through your investment dealer, directly from the Fund by writing to the Fund at Natixis Funds, P.O. Box 219579, Kansas City, MO 64121-9579, by exchange, by wire, by internet at ngam.natixis.com, through the Automated Clearing House system, or, in the case of redemptions, by telephone at 800-225-5478 or by the Systematic Withdrawal Plan.

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Tax Information Fund distributions are generally taxable to you as ordinary income or capital gains, except for distributions to retirement plans and other investors that qualify for tax-exempt treatment under U.S. federal income tax law generally. Investments in such tax-advantaged plans will generally be taxed only upon withdrawal of monies from the tax-exempt arrangement. Payments to Broker-Dealers and Other Financial Intermediaries If you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund and its related companies may pay the intermediary for the sale of the Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

UCI77-0312

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