GMO Trust | GMO U.S. Treasury Fund

GMO U.S. TREASURY FUND

Investment objective

Liquidity and safety of principal

with current income as a secondary objective.

Fees and expenses

The table below describes the fees and expenses that you may pay if you buy and hold shares of the Fund.

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

Annual Fund Operating Expenses		GMO Trust GMO U.S. Treasury Fund
Management fee	[1]	0.08%
Other expenses		0.02%
Total annual operating expenses		0.10%
Expense reimbursement/waiver	[1]	(0.02%)
Total annual operating expenses after expense reimbursement/waiver		0.08%

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, regardless of whether or not you redeem your shares at the end of such periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same as those shown in the table. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example (USD $)	1 Year		3 Years	5 Years	10 Years
GMO Trust GMO U.S. Treasury Fund	8	[1]	30	54	126

Expense Example, No Redemption (USD $)	1 Year		3 Years	5 Years	10 Years
GMO Trust GMO U.S. Treasury Fund	8	[1]	30	54	126

Portfolio turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities. A higher portfolio turnover rate may result in higher transaction costs and, when Fund shares are held in a taxable account, higher taxes. These costs, which are not reflected in Annual Fund operating expenses or in the Example, affect the Fund’s performance. During its fiscal year ended February 28, 2013, the Fund’s portfolio turnover rate (excluding short-term investments) was 0% of the average value of its portfolio.

Principal investment strategies

Under normal circumstances, the Fund invests at least 80% of its assets in Direct U.S. Treasury Obligations and repurchase agreements collateralized by these Obligations (see “Name Policies”). “Direct U.S. Treasury Obligations” include U.S. Treasury bills, bonds and notes and other securities issued by the U.S. Treasury, as well as Separately Traded Registered Interest and Principal Securities (STRIPS) and other zero-coupon securities. The Manager normally seeks to maintain an interest rate duration of one year or less for the Fund’s portfolio. For an additional discussion of duration, see “Additional Information About the Funds’ Investment Strategies, Risks, and Expenses — Fixed Income Funds — Duration.”

The Fund also may enter into repurchase agreements, under which the Fund purchases a security backed by the full faith and credit of the U.S. government from a seller who simultaneously commits to repurchase, on an agreed upon date in the future, the security from the Fund at the original purchase price plus an agreed upon amount representing the original purchase price plus interest. The counterparties in repurchase agreements are typically broker-dealers and banks, and the safety of the arrangement depends on, among other things, the Fund’s having an interest in the security that it can realize in the event of the insolvency of the counterparty.

In addition to Direct U.S. Treasury Obligations, the Fund may invest in other fixed income securities that are backed by the full faith and credit of the U.S. government, such as fixed income securities issued by the Government National Mortgage Association (GNMA) and the Federal Deposit Insurance Corporation (FDIC) that are guaranteed by the U.S. government. The Fund also may invest in money market funds that are unaffiliated with GMO.

Although the fixed income securities purchased by the Fund normally will have a stated or remaining maturity of one year or less, Direct U.S. Treasury Obligations purchased pursuant to repurchase agreements may not, and, therefore, if the counterparty to the repurchase agreement defaults, the Fund may end up owning a security with a stated or remaining maturity of more than one year.

The Fund is not a money market fund and is not subject to the duration, quality, diversification and other requirements applicable to money market funds.

In selecting U.S. Treasury securities for the Fund’s portfolio, the Manager focuses primarily on the relative attractiveness of different obligations (such as bonds, notes or bills), which can vary depending on the general level of interest rates as well as supply/demand imbalances and other market conditions. The factors considered and investment methods used by the Manager can change over time.

Principal risks of investing in the Fund

The value of the Fund’s shares changes with the value of the Fund’s investments. Many factors can affect this value, and you may lose money by investing in the Fund. The principal risks of investing in the Fund are summarized below. For a more complete discussion of these risks, see “Description of Principal Risks.”

• Market Risk – Fixed Income Investments – The market price of a fixed income investment can decline due to market-related factors, primarily rising interest rates.

• Credit Risk – Securities issued by the U.S. Treasury historically have presented minimal credit risk. However, recent events have led to a downgrade in the long-term U.S. credit rating by at least one major rating agency and have introduced greater uncertainty about the ability of the U.S. to repay its obligations. A further credit rating downgrade or a U.S. credit default could decrease the value and increase the volatility of the Fund’s investments.

• Focused Investment Risk – Focusing investments in securities from issuers, sectors, or industries with high positive correlations to one another, such as the Fund’s investments in securities issued by the U.S. Treasury and other fixed income securities that are backed by the full faith and credit of the U.S. government, creates more risk than if the Fund’s investments were less correlated.

• Large Shareholder Risk – To the extent that a large number of shares of the Fund is held by a single shareholder (e.g., an institutional investor or another GMO Fund) or a group of shareholders with a common investment strategy (e.g., GMO asset allocation accounts), the Fund is subject to the risk that a redemption by those shareholders of all or a large portion of their Fund shares will disrupt the Fund’s operations.

• Management and Operational Risk – The Fund runs the risk that GMO’s investment techniques will fail to produce desired results. The Fund also runs the risk that deficiencies in GMO’s or another service provider’s internal systems or controls will cause losses for the Fund or impair Fund operations.

• Market Disruption and Geopolitical Risk – Geopolitical and other events may disrupt securities markets and adversely affect global economies and markets. Those events, as well as other changes in non-U.S. and U.S. economic and political conditions, could adversely affect the value of the Fund’s investments.

Performance

The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund’s annual total returns from year to year for the periods indicated and by comparing the Fund’s average annual total returns for different calendar periods with those of a broad-based index. 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 your tax situation and may differ from those shown. After-tax returns shown are not relevant if you are tax-exempt or if you hold your Fund shares through tax-deferred arrangements (such as a 401(k) plan or individual retirement account). Past performance (before and after taxes) is not an indication of future performance.

Annual Total Returns
Years Ending December 31

Highest Quarter: 0.07% (2Q2010)
Lowest Quarter: – 0.02% (1Q2010)
Year-to-Date (as of 3/31/13): 0.03%

Average Annual Total Returns
Periods Ending December 31, 2012

Average Annual Total Returns GMO Trust	1 Year	5 Years	10 Years	Incept.	Inception Date
GMO U.S. Treasury Fund	0.10%			0.15%	Mar. 17, 2009
GMO U.S. Treasury Fund Return After Taxes on Distributions	0.07%			0.10%	Mar. 17, 2009
GMO U.S. Treasury Fund Return After Taxes on Distributions and Sale of Fund Shares	0.07%			0.10%	Mar. 17, 2009
GMO U.S. Treasury Fund Citigroup 3-Month Treasury Bill Index (reflects no deduction for fees, expenses, or taxes)	0.07%			0.11%	Mar. 17, 2009

[1] Grantham, Mayo, Van Otterloo & Co. LLC (the "Manager" or "GMO") has contractually agreed to reimburse the Fund for the following expenses: audit expenses, fund accounting expenses, pricing service expenses, expenses of non-investment related tax services, transfer agency expenses, expenses of non-investment related legal services provided to the Fund by or at the direction of the Manager, federal securities law filing expenses, printing expenses, state and federal registration fees and custody expenses. The Manager also has agreed to waive or reduce the Fund's management fees to the extent necessary to offset the management fees directly or indirectly paid to the Manager as a result of the Fund's direct or indirect investments in other GMO Funds. Management fees will not be waived below zero. This reimbursement and waiver will continue through at least June 30, 2014, and may not be terminated prior to this date without the action or consent of the Fund's Board of Trustees.

[1] After reimbursement

[1] After reimbursement