A series of the Investment Managers Series Trust

Investor Class (SEEDX)

Institutional Class (SEDEX)

Supplement dated December 27, 2013, to the

Statement of Additional Information dated December 31, 2012,

as amended on August 19, 2013.

The following is added to the “Investment Strategies and Policies” section:

Master Limited Partnerships (MLPs)

The Fund may invest in master limited partnerships (“MLPs”).  An MLP is an entity receiving partnership taxation treatment under the U.S. Internal Revenue Code of 1986, as amended (the “Code”), the interests or “units” of which are traded on securities exchanges like shares of corporate stock.  To qualify as an MLP for U.S. federal income tax purposes, an entity must receive at least 90% of its income from qualifying sources such as interest, dividends, real estate rents, gain from the sale or disposition of real property, income and gain from certain mineral or natural resources activities, income and gain from the transportation or storage of certain fuels, and, in certain circumstances, income and gain from commodities or futures, forwards and options with respect to commodities, and gain from the sale or other disposition of a capital asset held for the production of such income.  Mineral or natural resources activities include exploration, development, production, mining, processing, refining, marketing and transportation (including pipelines), of oil and gas, minerals, geothermal energy, fertilizer, timber or industrial source carbon dioxide. Currently, most MLPs operate in the energy, natural resources, or real estate sectors. The Fund anticipates that the MLPs in which the Fund invests will be engaged primarily in the energy industry. The Fund may, however, invest in MLP entities in any sector of the economy. Due to their federal income tax treatment as partnerships, MLPs generally do not pay income taxes, but investors holding interests in MLPs are generally subject to tax on their shares of the MLPs’ income and gains.

A typical MLP consists of a general partner and limited partners; however, some entities receiving partnership taxation treatment under the Code are established as limited liability companies. The general partner manages the partnership; has an ownership stake in the partnership (typically a 2% general partner equity interest and additional common units and subordinated units); and in many cases is eligible to receive an incentive distribution. The limited partners provide capital to the partnership, have a limited (if any) role in the operation and management of the partnership, and are entitled to receive cash distributions with respect to their units. An MLP typically pays an established minimum quarterly distribution to common unit holders, as provided under the terms of its partnership agreement. Common units have arrearage rights in distributions to the extent that the MLP fails to make minimum quarterly distributions. Once the MLP distributes the minimum quarterly distribution to common units, subordinated units then are entitled to receive distributions of up to the minimum quarterly distribution, but have no arrearage rights. At the discretion of the general partner, any distributable cash that exceeds the minimum quarterly distribution that the MLP distributed to the common and subordinated units is then distributed to both common and subordinated units, typically on a pro rata basis. Incentive distributions are often paid to the general partner such that as the distribution to limited partnership interests increases, the general partner may receive a proportionately larger share of the total distribution. Incentive distributions are designed to encourage the general partner, who controls and operates the partnership, to maximize the partnership’s cash flow and increase distributions to the limited partners.

Investments in securities of an MLP involve risks that differ from investments in common stock, including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, cash flow risks, dilution risks and risks related to the general partner’s right to require unit-holders to sell their common units at an undesirable time or price. Certain MLP securities may trade in lower volumes due to their smaller capitalizations. Accordingly, those MLPs may be subject to more abrupt or erratic price movements and may lack sufficient market liquidity to enable the Fund to effect sales at an advantageous time or without a substantial drop in price. Investment in those MLPs may restrict the Fund’s ability to take advantage of other investment opportunities. MLPs are generally considered interest-rate sensitive investments. During periods of interest rate volatility, these investments may not provide attractive returns.

Holders of an MLP’s units are exposed to a remote possibility of liability for all of the obligations of that MLP in the event that a court determines that the rights of the unit holders to take certain action under the limited partnership agreement would constitute “control” of the business of that MLP, or if a court or governmental agency determines that the MLP is conducting business in a state without complying with the limited partnership statute of that state.

Certain MLPs in which the Fund may invest depend upon their parent or sponsor entities for the majority of their revenues.  If their parent or sponsor entities were to fail to make such payments or satisfy their obligations, the revenues and cash flows of such MLPs and the ability of such MLPs to make distributions to unit holders, such as the Fund, would be adversely affected.

The following replaces the “Federal Income Tax Matters” section:

The following is a summary of certain material U.S. federal (and, where noted, state and local) income tax considerations affecting the Fund and its shareholders. The discussion is very general. Current and prospective shareholders are therefore urged to consult their own tax advisers with respect to the specific federal, state, local and foreign tax consequences of investing in the Fund. The summary is based on the laws in effect on the date of this SAI and existing judicial and administrative interpretations thereof, all of which are subject to change, possibly with retroactive effect.

The Fund is treated as a separate entity from other series of the Trust for federal income tax purposes.  The Fund has elected  to be treated and intends to qualify each year to be taxed as a regulated investment company under Subchapter M of the Code by complying with all applicable requirements of the Code, including, among other things, requirements as to the sources of the Fund’s income, diversification of the Fund’s assets and timing of Fund distributions.  To so qualify, a Fund must, among other things: (a) derive at least 90% of its gross income in each taxable year from dividends, interest, payments with respect to certain securities loans, and gains from the sale or other disposition of stock or securities or foreign currencies, or other income (including, but not limited to, gains from options, futures or forward contracts) derived with respect to its business of investing in such stock, securities or currencies, and net income derived from interests in “qualified publicly traded partnerships” (i.e., partnerships that are traded on an established securities market or tradable on a secondary market, other than partnerships that derive 90% of their income from interest, dividends, capital gains, and other traditionally permitted mutual fund income); and (b) diversify its holdings so that, at the end of each quarter of the Fund’s taxable year, (i) at least 50% of the market value of the Fund’s assets is represented by cash, securities of other regulated investment companies, U.S. Government securities and other securities, with such other securities limited, in respect of any one issuer, to an amount not greater than 5% of the Fund’s assets and not greater than 10% of the outstanding voting securities of such issuer and (ii) not more than 25% of the value of its assets is invested in the securities (other than U.S. Government securities or securities of other regulated investment companies) of any one issuer, in the securities (other than the securities of other regulated investment companies) of any two or more issuers that the Fund controls and that are determined to be engaged in the same or similar trades or businesses or related trades or businesses, or in the securities of one or more “qualified publicly traded partnerships.”

As a regulated investment company, the Fund will not be subject to U.S. federal income tax on the portion of its taxable investment income and capital gains that it distributes to its shareholders provided that it satisfies a minimum distribution requirement.  In order to avoid liability for federal excise tax, the Fund must distribute (or be deemed to have distributed) by December 31 of each calendar year at least the sum of (i)  98% of its ordinary income for such year, (ii)  98.2% of the excess of its realized capital gains over its realized capital losses for the 12-month period ending on October 31 during such year and (iii) any amounts from the prior calendar year that were not distributed and on which the Fund paid no federal income tax.  The Fund will be subject to income tax at regular corporate tax rates on any taxable income or gains that it does not distribute to its shareholders. The Fund's policy is to distribute to its shareholders all investment company taxable income (determined without regard to the deduction for dividends paid) and any net capital gains for each fiscal year in a manner that complies with the distribution requirements of the Code, so that the Fund will not be subject to any federal income or excise taxes.

If, for any taxable year, the Fund were to fail to qualify as a regulated investment company or to meet certain minimum distribution requirements under the Code, it would be taxed in the same manner as an ordinary corporation and distributions to its shareholders would not be deductible by the Fund in computing its taxable income.  In addition, in the event of a failure to qualify, the Fund’s distributions, to the extent derived from the Fund’s current or accumulated earnings and profits, including any distributions of net tax-exempt income and net long-term capital gains, would be taxable to shareholders as ordinary dividend income for federal income tax purposes.  However, such dividends would be eligible, subject to any generally applicable limitations, (i) to be treated as qualified dividend income in the case of shareholders taxed as individuals and (ii) for the dividends received deduction in the case of corporate shareholders.  Moreover, if the Fund were to fail to qualify as a regulated investment company in any year, it would be required to pay out its earnings and profits accumulated in that year in order to qualify again as a regulated investment company.  Under certain circumstances, the Fund may be able to cure a failure to qualify as a regulated investment company, but in order to do so the Fund might incur significant Fund-level taxes and might be forced to dispose of certain assets.  If the Fund failed to qualify as a regulated investment company for a period greater than two taxable years, the Fund would generally be required to recognize any net built-in gains with respect to certain of its assets upon a disposition of such assets within ten years of qualifying as a regulated investment company in a subsequent year.

Shareholders will be subject to federal income taxes on distributions made by the Fund whether paid in cash or additional shares.  Distributions of net investment income (including interest, dividend income and net short-term capital gain in excess of any net long-term capital loss, less certain expenses), other than qualified dividend income, will be taxable to shareholders as ordinary income.  Distributions of qualified dividend income, as such term is defined in Section 1(h)(11) of the Code (generally dividends received from U.S. domestic corporations and certain qualified foreign corporations provided that certain holding period and other requirements are met), generally will be taxed to non-corporate shareholders at the federal income tax rates applicable to net capital gain, provided the Fund reports the amount distributed as qualified dividend income.

Distributions of net capital gain (the excess of net long-term capital gain over net short-term capital loss), if any, will be taxable to non-corporate shareholders as long-term capital gain without regard to how long a shareholder has held shares of the Fund.  The Fund may retain certain amounts of capital gains and designate them as undistributed net capital gain in a notice to its shareholders, who (i) will be required to include in income for U.S. federal income tax purposes, as long-term capital gain, their proportionate shares of the undistributed amounts so designated, (ii) will be entitled to credit their proportionate shares of the income tax paid by the fund on those undistributed amounts against their federal income tax liabilities and to claim refunds to the extent such credits exceed their liabilities and (iii) will be entitled to increase their federal income tax basis in their shares by an amount equal to the excess of the amounts of undistributed net capital gain included in their respective income over their respective income tax credits.

Dividends paid by the Fund may qualify in part for the dividends received deduction available to corporate shareholders, provided the Fund reports the amount distributed as a qualifying dividend and certain holding period and other requirements under the Code are satisfied.  The reported amount, however, cannot exceed the aggregate amount of qualifying dividends received by the Fund for its taxable year.  In view of the Fund's investment policies, it is expected that dividends from domestic corporations will be part of the Fund's gross income and that, accordingly, a portion of the distributions by the Fund will be eligible for treatment as qualified dividend income and for the dividends received deduction.  However, the portion of the Fund's gross income attributable to qualified dividend income and qualifying dividends is largely dependent on the Fund's investment activities for a particular year and, therefore, cannot be predicted with any certainty.  Qualified dividend income treatment and the dividends received deduction may be reduced or eliminated if, among other things, (i) the shareholder is under an obligation (whether pursuant to a short sale or otherwise) to make related payments with respect to positions in substantially similar or related property or (ii) certain holding period requirements are not satisfied at both the Fund and shareholder levels.  In addition, qualified dividend income treatment is not available if a shareholder elects to have the dividend income treated as investment income for purposes of the limitation on deductibility of investment interest.

Dividends and distributions from the Fund and net gain from the redemption of Fund shares will generally be taken into account in determining a shareholder’s “net investment income” for purposes of the Medicare contribution tax applicable to certain individuals, estates and trusts.

Distributions are generally taxable when received.  However, distributions declared in October, November or December to shareholders of record on a date in such a month and paid the following January are taxable for federal income tax purposes as if received on December 31 of the calendar year in which declared.  Distributions are includable in alternative minimum taxable income in computing a shareholder's liability for the federal alternative minimum tax.

Depreciation or other cost recovery deductions passed through to the Fund from investments in MLPs in a given year will generally reduce the Fund’s taxable income, but those deductions may be recaptured in the Fund’s income in one or more subsequent years.  When recognized and distributed, recapture income will generally be taxable to shareholders at the time of the distribution at ordinary income tax rates, even though those shareholders might not have held shares in the Fund at the time the deductions were taken by the Fund, and even though those shareholders will not have corresponding economic gain on their shares at the time of the recapture.  In order to distribute recapture income or to fund redemption requests, the Fund may need to liquidate investments, which may lead to additional recapture income.

A redemption of Fund shares may result in recognition of a taxable gain or loss.  The gain or loss will generally be treated as a long-term capital gain or loss if the shares were held for more than one year.  If the shares were held for one year or less, the gain or loss will generally be treated as a short-term capital gain or loss.  Any loss realized upon redemption or exchange of shares held for six months or less will be treated as a long term capital loss to the extent of any amounts treated as distributions of long term capital gains during such six month period.  Any loss realized upon a redemption may be disallowed under certain wash sale rules to the extent shares of the same Fund or other substantially identical stock or securities are purchased (through reinvestment of distributions or otherwise) within 30 days before or after the redemption.

If a shareholder recognizes a loss with respect to the Fund’s shares of $2 million or more for an individual shareholder or $10 million or more for a corporate shareholder, the shareholder must file with the IRS a disclosure statement on Form 8886.  Direct shareholders of portfolio securities are in many cases exempted from this reporting requirement, but under current guidance, shareholders of a regulated investment company are not exempted.  The fact that a loss is reportable under these regulations does not affect the legal determination of whether the taxpayer’s treatment of the loss is proper. Shareholders should consult their tax advisors to determine the applicability of these regulations considering their individual circumstances.

The Fund's transactions in options and other similar transactions, such as futures, may be subject to special provisions of the Code that, among other things, affect the character of any income realized by the Fund from such investments, accelerate recognition of income to the Fund, defer Fund losses, affect the holding period of the Fund's securities, affect whether distributions will be eligible for the dividends received deduction or be treated as qualified dividend income and affect the determination of whether capital gain and loss is characterized as long-term or short-term capital gain or loss.  These rules could therefore affect the character, amount and timing of distributions to shareholders.  These provisions may also require the Fund to "mark-to-market" certain types of the positions in its portfolio (i.e., treat them as if they were closed out), which may cause the Fund to recognize income without receiving cash with which to make distributions in amounts necessary to satisfy the distribution requirements for avoiding U.S. federal income and excise taxes.  The Fund will monitor these transactions and will make the appropriate entries in its books and records, and if the Fund deems it advisable, will make appropriate elections if available in order to mitigate the effect of these rules, prevent disqualification of the Fund as a regulated investment company and minimize the imposition of U.S. federal income and excise taxes.

The Fund's transactions in broad based equity index futures contracts, exchange-traded options on such indices and certain other futures contracts are generally considered "Section 1256 contracts" for federal income tax purposes.  Any unrealized gains or losses on such Section 1256 contracts are treated as though they were realized at the end of each taxable year.  The resulting gain or loss is treated as 60% long-term capital gain or loss and 40% short-term capital gain or loss.  Gain or loss recognized on actual sales of Section 1256 contracts is treated in the same manner.  As noted above, distributions of net short-term capital gain are taxable to shareholders as ordinary income while distributions of net long-term capital gain are taxable to shareholders as long-term capital gain, regardless of how long the shareholder has held shares of the Fund.

The Fund's entry into a short sale transaction, an option or certain other contracts, such as futures, could be treated as the constructive sale of an appreciated financial position, causing the Fund to realize gain, but not loss, on the position.

If the Fund invests in certain pay-in-kind securities, zero coupon securities, deferred interest securities or, in general, any other securities with original issue discount (or with market discount if the Fund elects to include market discount in income currently), the Fund must accrue income on such investments for each taxable year, which generally will be prior to the receipt of the corresponding cash payments.  However, the Fund must distribute, at least annually, all or substantially all of its investment company taxable income (determined without regard to the deduction for dividends paid), including such accrued income to shareholders to avoid federal income and excise taxes.  Therefore, the Fund may have to sell portfolio securities (potentially under disadvantageous circumstances) to generate cash, or may have to undertake leverage by borrowing cash, to satisfy these distribution requirements. Dispositions of portfolio securities may result in additional gains and additional distribution requirements.

If the Fund invests in a market discount bond, it will be required to treat any gain recognized on the disposition of such market discount bond as ordinary income (instead of capital gain) to the extent of the accrued market discount, unless the Fund elects to include the market discount in income as it accrues as discussed above.  A market discount bond is a security acquired in the secondary market at a price below its redemption value (or its adjusted issue price if it is also an original issue discount bond).

The Fund may be subject to withholding and other taxes imposed by foreign countries, including taxes on interest, dividends and capital gains with respect to its investments in those countries, which would, if imposed, reduce the yield on or return from those investments.  Tax treaties between certain countries and the United States may reduce or eliminate such taxes in some cases.  So long as the Fund qualifies for treatment as a regulated investment company and incurs “qualified foreign taxes,” if more than 50% of its net assets at the close of its taxable year consist of stock or securities of foreign corporations, the Fund may elect to "pass through" to its shareholders the amount of such foreign taxes paid.  If this election is made, information with respect to the amount of the foreign income taxes that are allocated to the Fund's shareholders will be provided to them and any shareholder subject to tax on dividends will be required (i) to include in ordinary gross income (in addition to the amount of the taxable dividends actually received) his/her proportionate share of the foreign taxes paid that are attributable to such dividends; and (ii) either to deduct his/her proportionate share of such foreign taxes in computing his/her taxable income or to claim that amount as a foreign tax credit (subject to applicable limitations) against U.S. income taxes.  The Fund does not expect to satisfy the requirements for passing through to its shareholders their respective pro rata shares of qualified foreign taxes paid by the Fund, with the result that shareholders will not be required to include such taxes in their gross incomes and will not be entitled to a tax deduction or credit for such taxes on their own federal income tax returns.

Foreign exchange gains or losses realized by the Fund in connection with certain transactions involving foreign currency-denominated debt securities, certain options and futures contracts relating to foreign currency, foreign currency forward contracts, foreign currencies, or payables or receivables denominated in a foreign currency are subject to Section 988 of the Code, which generally causes such gains or losses to be treated as ordinary gain or loss and may affect the amount, timing and character of distributions to shareholders.

The Fund may purchase the securities of certain foreign investment funds or trusts called passive foreign investment companies ("PFICs").  PFICs may be the only or primary means by which the Fund may invest in some countries.  If the Fund invests in PFICs, it may be subject to U.S. federal income tax on a portion of any "excess distribution" or gain from the disposition of such shares even if such income is distributed as a taxable dividend to shareholders.  Additional charges in the nature of interest may be imposed on either the Fund or shareholders with respect to deferred taxes arising from such distributions or gains.  Capital gains on the sale of such holdings will be deemed to be ordinary income regardless of how long such PFICs are held.  A “qualified electing fund” election or a “mark to market” election may generally be available that would ameliorate these adverse tax consequences, but such elections could require the Fund to recognize taxable income or gain (subject to the distribution requirements applicable to regulated investment companies, as described above) without the concurrent receipt of cash. In order to satisfy the distribution requirements and avoid a tax on the Fund, the Fund may be required to liquidate portfolio securities that it might otherwise have continued to hold, potentially resulting in additional taxable gain or loss to the fund. In order for the Fund to make a qualified electing fund election with respect to a PFIC, the PFIC would have to agree to provide certain tax information to the Fund on an annual basis, which it might not agree to do. The Fund may limit and/or manage its holdings in PFICs to limit its tax liability or maximize its return from these investments.

Ordinary dividends and certain other payments made by the Fund to non-U.S. shareholders are generally subject to withholding tax at a 30% rate (or a lower rate as may be determined in accordance with any applicable treaty).  In order to obtain a reduced rate of withholding, a non-U.S. shareholder will be required to provide an IRS Form W-8BEN certifying its entitlement to benefits under a treaty.  The withholding tax does not apply to regular dividends paid to a non-U.S. shareholder who provides a Form W-8ECI, certifying that the dividends are effectively connected with the non-U.S. shareholder’s conduct of a trade or business within the United States.  The effectively connected dividends in this particular instance will be subject to regular U.S. income tax as if the non-U.S. shareholder were a U.S. shareholder.  A non-U.S. corporation receiving effectively connected dividends may also be subject to additional “branch profits tax” imposed at a rate of 30% (or at a lower rate, depending on the applicable tax treaty).  A non-U.S. shareholder who fails to provide an IRS Form W-8BEN or other applicable form may be subject to backup withholding at the appropriate rate.  This 30% withholding tax generally does not apply to distributions of net capital gains.  For Fund taxable years beginning before January 1, 2014, this 30% withholding tax will also not apply to dividends that the Fund reports as (a) interest-related dividends, to the extent such dividends are derived from the Fund’s “qualified net interest income,” or (b) short-term capital gain dividends, to the extent such dividends are derived from the Fund’s “qualified short-term gain.”  “Qualified net interest income” is the Fund’s net income derived from U.S.-source interest and original issue discount, subject to certain exceptions and limitations.  “Qualified short-term gain” generally means the excess of the net short-term capital gain of the Fund for the taxable year over its net long-term capital loss, if any.  In order to qualify for this exemption from withholding, a non-U.S. shareholder has to comply with applicable certification requirements relating to its non-U.S. status (including, in general, furnishing an IRS Form W-8BEN or substitute Form).

Distributions and redemption payments and certain capital gain dividends paid after June 30, 2014, to a non-U.S. shareholder that fails to make certain required certifications, or that is a “foreign financial institution” as defined in Section 1471 of the Code and that does not meet the requirements imposed on foreign financial institutions by Section 1471, will generally be subject to withholding tax at a 30% rate.  Withholding on such payments will begin at different times depending on the type of payment, the type of payee, and whether the shareholder’s account is opened before or after July 1, 2014.  Withholding with respect to ordinary dividends is currently scheduled to begin on July 1, 2014 for accounts opened on or after that date and on certain later dates for accounts opened before July 1, 2014.  Withholding on redemption payments and certain capital gain dividends is currently scheduled to begin on January 1, 2017.  The extent, if any, to which such withholding tax may be reduced or eliminated by an applicable tax treaty is unclear.  A non-U.S. shareholder may be exempt from the withholding described in this paragraph under an applicable agreement between the U.S. and a foreign government, provided that the shareholder and the applicable foreign government comply with the terms of such agreement.

The Fund is required to withhold (as “backup withholding”) a portion of reportable payments, including dividends, capital gain distributions and the proceeds of redemptions and exchanges or repurchases of Fund shares, paid to shareholders who have not complied with certain IRS regulations. The backup withholding rate is currently 28%.  In order to avoid this withholding requirement, shareholders, other than certain exempt entities, must certify on IRS Forms W-9 or on certain other documents, that the Social Security Numbers or other Taxpayer Identification Numbers they provide are their correct numbers and that they are not currently subject to backup withholding, or that they are exempt from backup withholding. The Fund may nevertheless be required to backup withhold if it receives notice from the IRS or a broker that a number provided is incorrect or that backup withholding is applicable as a result of previous underreporting of interest or dividend income.

This discussion and the related discussion in the Prospectus have been prepared by management of the Fund, and counsel to the Trust has expressed no opinion in respect thereof.

Prospective shareholders of the Fund should consult their own tax advisors concerning the effect of owning shares of the Fund in light of their particular tax situations.

Please file this Supplement with your records.