Class A, Inst, Inv, Separate Account Inst, R6 Shares | Goldman Sachs U.S. Mortgages Fund

Goldman Sachs U.S. Mortgages Fund—Summary

Investment Objective

The Goldman Sachs U.S. Mortgages Fund (the “Fund”) seeks a high level of total return consisting of income and capital appreciation.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. The table does not take into account brokerage commissions that you may pay on your purchases and sales of Institutional Shares of the Fund. You may qualify for sales charge discounts on purchases of Class A Shares if you invest at least $100,000 in Goldman Sachs Funds. More information about these and other discounts is available from your financial professional and in “Shareholder Guide—Common Questions Applicable to the Purchase of Class A Shares” beginning on page 65 and in Appendix C—Additional Information About Sales Charge Variations, Waivers and Discounts on page 133 of the Prospectus and “Other Information Regarding Maximum Sales Charge, Purchases, Redemptions, Exchanges and Dividends” beginning on page B-151 of the Fund’s Statement of Additional Information (“SAI”).

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees - Class A, Inst, Inv, Separate Account Inst, R6 Shares - Goldman Sachs U.S. Mortgages Fund	Class A	Institutional	Investor	Separate Account Institutional	Class R6
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	3.75%	none	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of original purchase price or sale proceeds)	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses - Class A, Inst, Inv, Separate Account Inst, R6 Shares - Goldman Sachs U.S. Mortgages Fund		Class A	Institutional	Investor	Separate Account Institutional	Class R6
Management Fees		0.34%	0.34%	0.34%	0.34%	0.34%
Distribution and Service (12b-1) Fees		0.25%	none	none	none	none
Other Expenses		0.27%	0.18%	0.27%	0.17%	0.17%
Acquired Fund Fees and Expenses		0.01%	0.01%	0.01%	0.01%	0.01%
Total Annual Fund Operating Expenses	[1]	0.87%	0.53%	0.62%	0.52%	0.52%
Fee Waiver and Expense Limitation	[2]	(0.08%)	(0.08%)	(0.08%)	(0.08%)	(0.08%)
Total Annual Fund Operating Expenses	[1],[3]	0.79%	0.45%	0.54%	0.44%	0.44%

Expense 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 Class A, Institutional, Investor, Separate Account Institutional and/or Class R6 Shares of the Fund for the time periods indicated and then redeem all of your Class A, Institutional, Investor, Separate Account Institutional and/or Class R6 Shares at the end of those periods. 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 incorporates the fee waiver and expense limitation arrangements for only the first year). The Example does not take into account brokerage commissions that you may pay on your purchases and sales of Institutional Shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example - Class A, Inst, Inv, Separate Account Inst, R6 Shares - Goldman Sachs U.S. Mortgages Fund - USD ($)	1 Year	3 Years	5 Years	10 Years
Class A Shares	453	634	832	1,400
Institutional Shares	46	162	288	657
Investor Shares	55	190	338	767
Separate Account Institutional Shares	45	159	283	645
Class R6 Shares	45	159	283	645

Portfolio Turnover

The Fund pays transaction costs when it buys and sells securities or instruments (i.e., “turns over” its portfolio). A high rate of portfolio turnover may result in increased transaction costs, which must be borne by the Fund and its shareholders, and is also likely to result in higher short-term capital gains for taxable shareholders. These costs are not reflected in annual fund operating expenses or in the expense example above, but are reflected in the Fund’s performance. The Fund’s portfolio turnover rate for the fiscal year ended March 31, 2019 was 963% of the average value of its portfolio.

Principal Strategy

The Fund invests, under normal circumstances, at least 80% of its net assets plus any borrowings for investment purposes (measured at the time of purchase) (“Net Assets”) in securities representing direct or indirect interests in or that are collateralized by adjustable rate and fixed rate mortgage loans or other mortgage-related securities (“Mortgage-Backed Securities”) of U.S. issuers. A U.S. issuer is an issuer economically tied to the United States. The Fund may also invest in mortgage dollar rolls, securities issued or guaranteed by the U.S. government, its agencies, instrumentalities or sponsored enterprises (“U.S. Government Securities”), asset-backed securities (including collateralized loan obligations (“CLOs”)) and foreign securities. The Fund also intends to invest in derivatives, including (but not limited to) interest rate futures, interest rate swaps and credit default swaps, primarily to manage the Fund’s duration, hedge the Fund’s portfolio risks, and/or gain exposure to certain fixed income securities.

The Fund may also seek to obtain exposure to fixed income investments through investments in affiliated or unaffiliated investment companies, including exchange-traded funds (“ETFs”).

The Fund’s investments must be rated, at the time of purchase, at least BBB– by Standard & Poor’s Ratings Services (“Standard & Poor’s”), at least Baa3 by Moody’s Investors Service, Inc. (“Moody’s”), or have a comparable credit rating by another nationally recognized statistical rating organization (“NRSRO”) or, if unrated, must be determined by the Investment Adviser to be of comparable credit quality.

The Fund’s target duration range under normal interest rate conditions is expected to approximate that of the Bloomberg Barclays U.S. Securitized Bond Index plus or minus 0.5 years, and over the past five years ended June 30, 2019, the duration of this Index has ranged between 2.36 and 5.35 years. “Duration” is a measure of a debt security’s price sensitivity to changes in interest rates. The longer the duration of the Fund (or an individual debt security), the more sensitive its market price to changes in interest rates. For example, if market interest rates increase by 1%, the market price of a debt security with a positive duration of 3 will generally decrease by approximately 3%. Conversely, a 1% decline in market interest rates will generally result in an increase of approximately 3% of that security’s market price.

The Fund may implement short positions and may do so by using swaps, options or futures, To Be Announced (“TBA”) Mortgage-Backed Securities, or through short sales of any instrument that the Fund may purchase for investment. For example, the Fund may enter into a futures contract pursuant to which it agrees to sell an asset (that it does not currently own) at a specified price at a specified point in the future. This gives the Fund a short position with respect to that asset. The Fund may utilize short positions to implement macro views on securities valuations, long term views on relative value or short term views on security mispricings, as well as any other views the Investment Adviser deems appropriate. For example, the Fund may buy a TBA Mortgage-Backed Security that the Investment Adviser expects to outperform or that it believes to be undervalued, and may also sell short a TBA Mortgage-Backed Security that it believes will underperform. The Fund will benefit from a short position to the extent the asset decreases in value (and will be harmed to the extent the asset increases in value) between the time it enters into the futures contract and the agreed date of sale. Alternatively, the Fund may sell an instrument (e.g., a bond, or a futures contract) it does not own in anticipation of a decline in the market value of the instrument, and then borrow the instrument to make delivery to the buyer. In these transactions, the Fund is obligated to replace the instrument borrowed by purchasing it at the market price at the time of replacement.

The Fund’s portfolio managers seek to build a portfolio that reflects their investment views across the U.S. mortgages market consistent with the Fund’s overall risk budget and the views of the Investment Adviser’s Global Fixed Income top-down teams. As market conditions change, the volatility and attractiveness of sectors, securities and strategies can change as well. To optimize the Fund’s risk/return potential within its long-term risk budget, the portfolio managers may dynamically adjust the mix of top-down and bottom-up strategies in the Fund’s portfolio.

The Fund’s benchmark index is the Bloomberg Barclays U.S. Securitized Bond Index.

Principal Risks of the Fund

Loss of money is a risk of investing in the Fund. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any government agency. The Fund should not be relied upon as a complete investment program. There can be no assurance that the Fund will achieve its investment objective. Investments in the Fund involve substantial risks which prospective investors should consider carefully before investing.

• Collateralized Loan Obligations Risk.  The Fund may invest in collateralized loan obligations (“CLOs”) and other similarly structured investments. A CLO is an asset-backed security whose underlying collateral is a pool of loans, which may include, among others, domestic and foreign floating rate and fixed rate senior secured loans, senior unsecured loans, and subordinate corporate loans, including loans that may be rated below investment grade or equivalent unrated loans. In addition to the normal risks associated with loan- and credit-related securities discussed elsewhere in the Prospectus (e.g., loan-related investments risk, interest rate risk and default risk), investments in CLOs carry additional risks including, but not limited to, the risk that: (i) distributions from the collateral may not be adequate to make interest or other payments; (ii) the quality of the collateral may decline in value or default; (iii) the Fund may invest in tranches of CLOs that are subordinate to other tranches; (iv) the structure and complexity of the transaction and the legal documents could lead to disputes among investors regarding the characterization of proceeds; and (v) the CLO’s manager may perform poorly.
  
  CLOs issue classes or “tranches” that offer various maturity, risk and yield characteristics. Losses caused by defaults on underlying assets are borne first by the holders of subordinate tranches. Despite the protection from subordinate tranches, more senior tranches of CLOs can experience losses due to actual defaults, increased sensitivity to defaults due to collateral default and disappearance of more subordinate tranches, market anticipation of defaults, as well as aversion to CLO securities as a class. The Fund’s investments in CLOs principally consist of senior tranches and, to a lesser extent, mezzanine tranches.
• Credit/Default Risk.  An issuer or guarantor of fixed income securities or instruments held by the Fund may default on its obligation to pay interest and repay principal or default on any other obligation. Additionally, the credit quality of securities may deteriorate rapidly, which may impair the Fund’s liquidity and cause significant deterioration in net asset value (“NAV”).
• Derivatives Risk.  The Fund’s use of interest rate futures, interest rate swaps, credit default swaps and other derivative instruments may result in losses. These instruments, which may pose risks in addition to and greater than those associated with investing directly in securities, currencies or other instruments, may be illiquid or less liquid, volatile, difficult to price and leveraged so that small changes in the value of underlying instruments may produce disproportionate losses to the Fund. Certain derivatives are also subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligations. The use of derivatives is a highly specialized activity that involves investment techniques and risks different from those associated with investments in more traditional securities and instruments.
• Interest Rate Risk.  When interest rates increase, fixed income securities or instruments held by the Fund will generally decline in value. Long-term fixed income securities or instruments will normally have more price volatility because of this risk than short-term fixed income securities or instruments. The risks associated with changing interest rates may have unpredictable effects on the markets and the Fund’s investments. Fluctuations in interest rates may also affect the liquidity of fixed income securities and instruments held by the Fund.
• Large Shareholder Transactions Risk.  The Fund may experience adverse effects when certain large shareholders purchase or redeem large amounts of shares of the Fund. Such large shareholder redemptions, which may occur rapidly or unexpectedly, may cause the Fund to sell portfolio securities at times when it would not otherwise do so, which may negatively impact the Fund’s NAV and liquidity. Similarly, large Fund share purchases may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash or otherwise maintains a larger cash position than it ordinarily would. These transactions may also accelerate the realization of taxable income to shareholders if such sales of investments resulted in gains, and may also increase transaction costs. In addition, a large redemption could result in the Fund’s current expenses being allocated over a smaller asset base, leading to an increase in the Fund’s expense ratio.
• Mortgage-Backed and Other Asset-Backed Securities Risk.  Mortgage-related and other asset-backed securities are subject to certain additional risks, including “extension risk” (i.e., in periods of rising interest rates, issuers may pay principal later than expected) and “prepayment risk” (i.e., in periods of declining interest rates, issuers may pay principal more quickly than expected, causing the Fund to reinvest proceeds at lower prevailing interest rates). Mortgage-backed securities offered by non-governmental issuers are subject to other risks as well, including failures of private insurers to meet their obligations and unexpectedly high rates of default on the mortgages backing the securities. Other asset-backed securities are subject to risks similar to those associated with mortgage-backed securities, as well as risks associated with the nature and servicing of the assets backing the securities. Asset-backed securities may not have the benefit of a security interest in collateral comparable to that of mortgage assets, resulting in additional credit risk.
• Other Investment Companies Risk.  By investing in other investment companies (including ETFs) indirectly through the Fund, investors will incur a proportionate share of the expenses of the other investment companies held by the Fund (including operating costs and investment management fees) in addition to the fees regularly borne by the Fund. In addition, the Fund will be affected by the investment policies, practices and performance of such investment companies in direct proportion to the amount of assets the Fund invests therein.
• Portfolio Turnover Rate Risk.  A high rate of portfolio turnover (300% or more) may involve correspondingly greater expenses which must be borne by the Fund and its shareholders, and is also likely to result in short-term capital gains taxable to shareholders.
• Short Position Risk.  The Fund may enter into a short position through a futures contract, an option or swap agreement or through short sales of any instrument that the Fund may purchase for investment. Taking short positions involves leverage of the Fund’s assets and presents various risks. If the value of the underlying instrument or market in which the Fund has taken a short position increases, then the Fund will incur a loss equal to the increase in value from the time that the short position was entered into plus any related interest payments or other fees. Taking short positions involves the risk that losses may be disproportionate, may exceed the amount invested and may be unlimited.
• U.S. Government Securities Risk.  The U.S. government may not provide financial support to U.S. government agencies, instrumentalities or sponsored enterprises if it is not obligated to do so by law. U.S. Government Securities issued by the Federal National Mortgage Association (“Fannie Mae”), Federal Home Loan Mortgage Corporation (“Freddie Mac”) and the Federal Home Loan Banks are neither issued nor guaranteed by the U.S. Treasury and, therefore, are not backed by the full faith and credit of the U.S. The maximum potential liability of the issuers of some U.S. Government Securities held by the Fund may greatly exceed their current resources, including their legal right to support from the U.S. Treasury. It is possible that issuers of U.S. Government Securities will not have the funds to meet their payment obligations in the future.

Performance

The bar chart and table below provide an indication of the risks of investing in the Fund by showing: (a) changes in the performance of the Fund’s Class A Shares from year to year; and (b) how the average annual total returns of the Fund’s Class A, Institutional, Investor, Separate Account Institutional and Class R6 Shares compare to those of a broad-based securities market index. The Fund’s past performance, before and after taxes, is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available at no cost at www.gsamfunds.com/performance or by calling the appropriate phone number on the back cover of the Prospectus.

The bar chart (including “Best Quarter” and “Worst Quarter” information) does not reflect the sales loads applicable to Class A Shares. If the sales loads were reflected, returns would be less. Performance reflects applicable fee waivers and/or expense limitations in effect during the periods shown.

TOTAL RETURN CALENDAR YEAR (CLASS A)

The total return for Class A Shares for the six-month period ended June 30, 2019 was 4.03%.

Best Quarter
Q3 ‘09      +4.75%

Worst Quarter
Q4 ‘16      –1.83%

AVERAGE ANNUAL TOTAL RETURN For the period ended December 31, 2018

Average Annual Total Returns - Class A, Inst, Inv, Separate Account Inst, R6 Shares - Goldman Sachs U.S. Mortgages Fund		1 Year	5 Years	10 Years		Inception Date
Class A Shares		(3.45%)	1.26%	3.29%		Nov. 03, 2003
Class A Shares | Returns After Taxes on Distributions		(4.45%)	0.25%	2.27%		Nov. 03, 2003
Class A Shares | Returns After Taxes on Distributions and Sale of Fund Shares		(2.05%)	0.51%	2.14%		Nov. 03, 2003
Class A Shares | Bloomberg Barclays U.S. Securitized Bond Index (reflects no deduction for fees or expenses)		0.99%	2.51%	3.44%		Nov. 03, 2003
Institutional Shares		0.70%	2.38%	4.04%		Nov. 03, 2003
Institutional Shares | Bloomberg Barclays U.S. Securitized Bond Index (reflects no deduction for fees or expenses)		0.99%	2.51%	3.44%		Nov. 03, 2003
Investor Shares		0.61%	2.28%	2.45%	[1]	Jul. 29, 2011
Investor Shares | Bloomberg Barclays U.S. Securitized Bond Index (reflects no deduction for fees or expenses)		0.99%	2.51%	2.21%	[1]	Jul. 29, 2011
Separate Account Institutional Shares		0.70%	2.38%	4.03%		Nov. 03, 2003
Separate Account Institutional Shares | Bloomberg Barclays U.S. Securitized Bond Index (reflects no deduction for fees or expenses)		0.99%	2.51%	3.44%		Nov. 03, 2003
Class R6 Shares	[2]	0.62%	2.38%	4.05%		Jul. 31, 2015
Class R6 Shares | Bloomberg Barclays U.S. Securitized Bond Index (reflects no deduction for fees or expenses)	[2]	0.99%	2.51%	3.44%		Jul. 31, 2015

The after-tax returns are for Class A Shares only. The after-tax returns for Institutional, Investor, Separate Account Institutional and Class R6 Shares will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. In addition, the after-tax returns shown are not relevant to investors who hold Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.

[1] The "Total Annual Fund Operating Expenses" and "Total Annual Fund Operating Expenses After Fee Waiver and Expense Limitation" do not correlate to the ratios of net and total expenses to average net assets provided in the Financial Highlights, which reflect the operating expenses of the Fund and do not include "Acquired Fund Fees and Expenses."

[2] The Investment Adviser has agreed to (i) waive a portion of its management fee payable by the Fund in an amount equal to any management fee it earns as an investment adviser to the affiliated funds in which the Fund invests; and (ii) reduce or limit “Other Expenses” (excluding acquired fund fees and expenses, transfer agency fees and expenses, taxes, interest, brokerage fees, expenses of shareholder meetings, litigation and indemnification, and extraordinary expenses) to 0.074% of the Fund’s average daily net assets. These arrangements will remain in effect through at least July 29, 2020, and prior to such date the Investment Adviser may not terminate the arrangements without the approval of the Board of Trustees.

[3] After Fee Waiver and Expense Limitation

[1] Returns are shown since the inception date of the share class.

[2] Class R6 Shares commenced operations on July 31, 2015. Prior to that date, the performance of Class R6 Shares shown in the table above is that of Institutional Shares. Performance has not been adjusted to reflect the lower expenses of Class R6 Shares. Class R6 Shares would have had higher returns because: (i) Institutional Shares and Class R6 Shares represent interests in the same portfolio of securities; and (ii) Class R6 Shares have lower expenses.