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Class F Prospectus | SIMT CORE FIXED INCOME FUND

CORE FIXED INCOME FUND

Investment Goal

Current income consistent with the preservation of capital.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell Fund shares. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in this table and examples below.

ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	Class F Prospectus SIMT CORE FIXED INCOME FUND CLASS F
Management Fees	0.28%
Distribution (12b-1) Fees	none
Other Expenses	0.46%
Total Annual Fund Operating Expenses	0.74%

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 or hold all of your 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.

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
Class F Prospectus | SIMT CORE FIXED INCOME FUND | CLASS F | USD ($)	76	237	411	918

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 when 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. During the most recent fiscal year, the Fund's portfolio turnover rate was 340% of the average value of its portfolio.

Principal Investment Strategies

Under normal circumstances, the Core Fixed Income Fund will invest at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in fixed income securities. The Fund will invest primarily in investment and non-investment grade (junk bond) U.S. corporate and government fixed income securities, including asset-backed securities, mortgage dollar rolls, mortgage-backed securities and securities issued or guaranteed by the U.S. Government and its agencies and instrumentalities. The Fund may invest in securities

denominated in either U.S. dollars or foreign currency. Due to its investment strategy, the Fund may buy and sell securities and other instruments frequently.

The Fund uses a multi-manager approach, relying upon a number of sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation, the Fund's adviser (SIMC or the Adviser). Sub-Advisers are selected for their expertise in managing various kinds of fixed income securities, and each Sub-Adviser makes investment decisions based on an analysis of yield trends, credit ratings and other factors in accordance with its particular discipline.

The Fund may also invest in futures contracts, forward contracts, options and swaps for speculative or hedging purposes. Futures contracts, forward contracts, options and swaps may be used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives may also be used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities, currencies or market segments. Interest rate swaps may further be used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer, and the Fund may sell credit default swaps to more efficiently gain credit exposure to a security or basket of securities.

The Sub-Advisers may also engage in currency transactions using futures and foreign currency forward contracts either to seek to hedge the Fund's currency exposure or to enhance the Fund's returns. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-). However, the Fund may also invest in non-rated securities or securities rated below investment grade (BB+, B and CCC).

The Fund may also invest a portion of its assets in foreign securities and bank loans, which are, generally, non-investment grade (junk bond) floating rate instruments. The Fund may invest in bank loans in the form of participations in the loans or assignments of all or a portion of the loans from third parties.

While each Sub-Adviser chooses securities of different types and maturities, the Fund, in the aggregate, generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market, as represented by the Bloomberg U.S. Aggregate Bond Index. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates. For example, if a fixed income security has a five-year duration, it will decrease in value by approximately 5% if interest rates rise 1% and increase in value by approximately 5% if interest rates fall 1%. Fixed income instruments with higher duration typically have higher risk and higher volatility.

The dollar-weighted average duration of the Bloomberg U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2023 it was 6.24 years.

Principal Risks

Performance Information

The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year for the past ten calendar years and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compare with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.

Best Quarter: 7.29% (12/31/2023)
Worst Quarter: -6.81% (03/31/2022)

Average Annual Total Returns (for the periods ended December 31, 2023)

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. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Average Annual Returns - Class F Prospectus - SIMT CORE FIXED INCOME FUND	Label	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, 10 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
CLASS F	Return Before Taxes	5.92%	1.03%	1.88%	5.28%	May 01, 1987
After Taxes on Distributions | CLASS F	Return After Taxes on Distributions	4.44%	(0.35%)	0.53%	3.31%
After Taxes on Distributions and Sale of Fund Shares | CLASS F	Return After Taxes on Distributions and Sale of Fund Shares	3.47%	0.26%	0.88%	3.36%
Bloomberg U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)	Bloomberg U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)	5.53%	1.10%	1.81%	5.44%	May 01, 1987