Summary Prospectus by Investment Company (Form 497K)

SUMMARY PROSPECTUS

DECEMBER 7, 2021

VALIC COMPANY I

GLOBAL STRATEGY FUND

(TICKER: VGLSX)

Investment Objective

The Fund seeks high total return.

Fees and Expenses of the Fund

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. The table and the example below do not reflect the separate account fees charged in the variable annuity or variable life insurance policy ("Variable Contracts") in which the Fund is offered. If separate account fees were shown, the Fund's annual operating expenses would be higher. Please see your Variable Contract prospectus for more details on the separate account fees.

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

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 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 include fee waivers for year one. The Example does not reflect charges imposed by the Variable Contract. If the Variable Contract fees were reflected, the expenses would be higher. See the Variable Contract prospectus for information on such charges. Although your actual costs may be higher or lower, based on these assumptions and the net expenses shown in the fee table, your costs would be:

Portfolio Turnover

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). 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 39% of the average value of its portfolio.

Principal Investment Strategies of the Fund

Under normal market conditions, the Fund invests in equity securities of companies in any country, fixed income (debt) securities of companies and governments of any country, or other instruments with similar economic characteristics, and in money market securities. There are no minimum or

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maximum percentage targets for each asset class, though under normal market conditions, the subadviser will direct 50% to 80% of the Fund's assets to equity securities. The Fund's subadviser, Franklin Advisers, Inc. ("Franklin Advisers"), manages the equity portion of the Fund's assets and allocates the remainder of the portfolio to be managed by its affiliate, Brandywine Global Investment Management, LLC ("Brandywine Global"), the Fund's sub-subadviser. Although the Fund seeks investments across a number of countries and sectors, from time to time, based on economic conditions, the Fund may have significant positions in particular countries or sectors.

The equity securities in which the Fund invests are primarily common stock of large- and mid-capitalization companies included in the Morgan Stanley Capital International All Country World Index (the "MSCI ACWI Index") and depositary receipts representing such stocks. As of October 29, 2021, the market capitalization range of the companies in the MSCI ACWI Index was approximately $72.33 million to $2.49 trillion.

With respect to equity securities, the Fund seeks to achieve a lower level of risk and higher risk-adjusted performance than the MSCI ACWI Index over the long term through a multi-factor selection process employed by the Fund's subadviser. The subadviser's multi-factor selection process for equity securities is designed to select stocks for the Fund that have favorable exposure to three investment factors - quality, value and momentum. Under normal market conditions, the Fund will hold 450 to 600 of the common stocks, or depositary receipts representing such stocks, in the MSCI ACWI Index.

With respect to the Fund's fixed income securities, the Fund's sub-subadviser follows a value-driven, active, strategic approach to portfolio decisions that considers duration, yield curve exposure, credit exposure, and sector weightings that are based upon the broad investment themes of its global macroeconomic research platform as they apply to fixed income markets.

The sub-subadviser has broad discretion to invest in multiple types of fixed income securities of any maturity and duration. The Fund can seek investment opportunities anywhere in the world. Under normal market conditions, the Fund's foreign currency exposure will be limited to 25% of the Fund's fixed income assets. Alternatively, the Fund could invest more than 25% of its fixed income securities in bonds denominated in non-U.S. currencies if it uses derivatives strategies to hedge the non-U.S. currency exposure back to the U.S. dollar so that the Fund would have no more than 25% of its fixed income portfolio exposed to non-U.S. currencies.

The Fund may invest in securities that are rated in any category or unrated. Up to 15% of the Fund's net assets may be invested in "high yield" or "junk" bonds (that is, securities rated below the Baa/BBB- categories or, if

unrated, determined to be of comparable credit quality by the sub-subadviser), which are considered speculative.

The Fund may invest in asset-backed and mortgage-backed securities. The Fund will not invest more than 25% of its fixed income assets in asset-backed and mortgage-backed securities that are not issued or guaranteed by, or comprised of securities issued or guaranteed by, a U.S. government agency or U.S. government-sponsored entity.

Under normal market conditions, the Fund expects to invest at least 40% of its net assets in foreign securities, including foreign equity securities and foreign sovereign debt securities. The Fund considers an issuer to be from a particular country (including the United States) or geographic region if: (i) its principal securities trading market is in that country or geographic region; (ii) the company derives the majority of its annual revenue or earnings or assets from goods produced, sales made or services performed in that country or geographic region; or (iii) it is organized under the laws of, or has a principal office in, that country or geographic region. Although the Fund generally invests in securities of issuers located in developed countries, the Fund may invest up to 50% of its total assets in securities of issuers located in emerging markets.

The Fund may invest in derivative instruments such as foreign currency forwards, currency options, bond futures, interest rate futures, equity futures, equity index futures, swaps (including interest rate, total return and inflation swaps), credit default swaps, credit default swap index products, instruments involved in currency risk management strategies, options, options on futures, structured credit products and currency index futures contracts. The Fund may use derivatives to enhance total return, as a means of providing additional exposure to certain types of investments, to hedge against fluctuations in securities prices, interest rates or currency exchange rates, to change the effective duration of its portfolio, as a cash flow management technique or as a substitute for the purchase or sale of securities or currencies.

In order to generate additional income, the Fund may lend portfolio securities to broker-dealers and other financial institutions provided that the value of the loaned securities does not exceed 30% of the Fund's total assets. These loans earn income for the Fund and are collateralized by cash and securities issued or guaranteed by the U.S. Government or its agencies or instrumentalities.

Principal Risks of Investing in the Fund

As with any mutual fund, there can be no assurance that the Fund's investment objective will be met or that the net return on an investment in the Fund will exceed what could have been obtained through other investment or savings vehicles. Shares of the Fund are not bank deposits and are not guaranteed or insured by any bank, government entity or the Federal Deposit Insurance Corporation. If the value of the assets of the Fund goes down, you could lose money.

GLOBAL STRATEGY FUND

The following is a summary of the principal risks of investing in the Fund.

Management Risk. The investment style or strategy used by the subadviser and sub-subadviser may fail to produce the intended result. The subadviser's or sub-subadviser's assessment of a particular security or company may prove incorrect, resulting in losses or underperformance.

Emerging Markets Risk. In addition to the risks associated with investments in foreign securities, emerging market securities are subject to additional risks, which cause these securities generally to be more volatile than securities of issuers located in developed countries.

Foreign Investment Risk. Investment in foreign securities involves risks due to several factors, such as illiquidity, the lack of public information, changes in the exchange rates between foreign currencies and the U.S. dollar, unfavorable political, social and legal developments, or economic and financial instability. Foreign companies are not subject to the U.S. accounting and financial reporting standards and may have riskier settlement procedures. U.S. investments that are denominated in foreign currencies or that are traded in foreign markets, or securities of U.S. companies that have significant foreign operations may be subject to foreign investment risk.

Geographic Risk. If the Fund invests a significant portion of its assets in issuers located in a single country, a limited number of countries, or a particular geographic region, it assumes the risk that economic, political and social conditions in those countries or that region may have a significant impact on its investment performance.

Equity Securities Risk. The Fund's investments in equity securities are subject to the risk that stock prices will fall and may underperform other asset classes. Individual stock prices fluctuate from day-to-day and may decline significantly. The prices of individual stocks may be negatively affected by poor company results or other factors affecting individual prices, as well as industry and/ or economic trends and developments affecting industries or the securities market as a whole.

Depositary Receipts Risk. Depositary receipts are generally subject to the same risks as the foreign securities that they evidence or into which they may be converted. Depositary receipts may or may not be jointly sponsored by the underlying issuer. The issuers of unsponsored depositary receipts are not obligated to disclose information that is considered material in the United States. Therefore, there may be less information available regarding the issuers and there may not be a correlation between such information and the market value of the depositary receipts. Certain depositary receipts are not listed on an exchange and therefore may be considered to be illiquid securities.

Factor-Based Investing Risk. There can be no assurance that the multi-factor selection process employed by the subadviser will enhance performance. Exposure to

investment style factors may detract from performance in some market environments, which may continue for prolonged periods.

Disciplined Strategy Risk. The Fund will not deviate from its equity strategy (except to the extent necessary to comply with federal tax laws or other applicable laws). If the Fund is committed to a strategy that is unsuccessful, the Fund will not meet its investment goal. Because the Fund generally will not use certain techniques available to other mutual funds to reduce stock market exposure, the Fund may be more susceptible to general market declines than other mutual funds.

Credit Risk. The issuer of a fixed income security owned by the Fund may be unable to make interest or principal payments.

Interest Rate Fluctuations Risk. Fixed income securities may be subject to volatility due to changes in interest rates. Duration is a measure of interest rate risk that indicates how price-sensitive a bond is to changes in interest rates. Longer-term and lower coupon bonds tend to be more sensitive to changes in interest rates. Interest rates have been historically low, so the Fund faces a heightened risk that interest rates may rise. For example, a bond with a duration of three years will decrease in value by approximately 3% if interest rates increase by 1%. Recent and potential future changes in monetary policy made by central banks and/or their governments are likely to affect the level of interest rates.

Currency Risk. Because the Fund's foreign investments are generally held in foreign currencies, the Fund could experience gains or losses based solely on changes in the exchange rate between foreign currencies and the U.S. dollar. Such gains or losses may be substantial.

Derivatives Risk. The prices of derivatives may move in unexpected ways due to the use of leverage and other factors and may result in increased volatility or losses. The Fund may not be able to terminate or sell derivative positions, and a liquid secondary market may not always exist for derivative positions. When currency forwards are used by the Fund for hedging purposes, there is a risk that due to imperfect correlations, the currency forwards will not fully hedge against adverse changes in foreign currency values or, under extreme market conditions, will not provide any hedging benefit. The successful use of currency forwards for non-hedging purposes usually depends on the portfolio managers' ability to forecast movements in foreign currency values and may be speculative. Should these values move in unexpected ways, the Fund may not achieve the anticipated benefit from using currency forwards, and it may realize losses, which could be significant.

Foreign Sovereign Debt Risk. Foreign sovereign debt securities are subject to the risk that a governmental entity may delay or refuse to pay interest or to repay principal on its sovereign debt, due, for example, to cash flow problems,

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insufficient foreign currency reserves, political, social and economic considerations, the relative size of the governmental entity's debt position in relation to the economy or the failure to put in place economic reforms required by the International Monetary Fund or other multilateral agencies. If a governmental entity defaults, it may ask for more time in which to pay or for further loans.

Futures Risk. A futures contract is considered a derivative because it derives its value from the price of the underlying currency, security or financial index. The prices of futures contracts can be volatile and futures contracts may lack liquidity. In addition, there may be imperfect or even negative correlation between the price of a futures contract and the price of the underlying currency, security or financial index.

Credit Default Swap Risk. A credit default swap is an agreement between two parties: a buyer of credit protection and a seller of credit protection. The buyer in a credit default swap agreement is obligated to pay the seller a periodic stream of payments over the term of the swap agreement. If no default or other designated credit event occurs, the seller of credit protection will have received a fixed rate of income throughout the term of the swap agreement. If a default or designated credit event does occur, the seller of credit protection must pay the buyer of credit protection the full value of the reference obligation. Credit default swaps increase counterparty risk when the Fund is the buyer. The absence of a central exchange or market for swap transactions has led, in some instances, to difficulties in trading and valuation, especially in the event of market disruptions. Recent legislation requires most swaps to be executed through a centralized exchange or regulated facility and be cleared through a regulated clearinghouse. The swap market could be disrupted or limited as a result of this legislation, which could adversely affect the Fund. Moreover, the establishment of a centralized exchange or market for swap transactions may not result in swaps being easier to trade or value.

Junk Bond Risk. High yielding, high risk fixed-income securities (often referred to as "junk bonds") may involve significantly greater credit risk, market risk and interest rate risk compared to higher rated fixed-income securities. Issuers of junk bonds are less secure financially and their securities are more sensitive to downturns in the economy. The market for junk bonds may not be as liquid as that for more highly rated securities.

Mortgage-Backed Securities Risk. Mortgage-backed securities are similar to other debt securities in that they are subject to credit risk and interest rate risk. Mortgage-backed securities may be issued or guaranteed by the U.S. Government, its agencies or instrumentalities or may be non-guaranteed securities issued by private issuers. These securities are also subject to the risk that issuers will prepay the principal more quickly or more slowly than expected, which could cause the Fund to invest the proceeds in less attractive investments or increase the volatility of their prices.

Asset-Backed Securities Risk. Asset-backed securities are bonds or notes that are normally supported by a specific property. If the issuer fails to pay the interest or return the principal when the bond matures, then the issuer must give the property to the bondholders or noteholders. Examples of assets supporting asset-backed securities include credit card receivables, retail installment loans, home equity loans, auto loans, and manufactured housing loans.

Income Risk. Because the Fund can only distribute what it earns, the Fund's distributions to shareholders may decline when prevailing interest rates fall or when the Fund experiences defaults on debt securities it holds.

Counterparty Risk. Counterparty risk is the risk that a counterparty to a security, loan or derivative held by the Fund becomes bankrupt or otherwise fails to perform its obligations due to financial difficulties. The Fund may experience significant delays in obtaining any recovery in a bankruptcy or other reorganization proceeding, and there may be no recovery or limited recovery in such circumstances.

Liquidity Risk. If the active trading market for certain securities becomes limited or non-existent, it can become more difficult to sell the securities at or near their perceived value. This may cause the value of such securities and the Fund's share price to fall dramatically.

Market Risk. The Fund's share price can fall because of weakness in the broad market, a particular industry, or specific holdings or due to adverse political or economic developments here or abroad, changes in investor psychology, or heavy institutional selling and other conditions or events (including, for example, military confrontations, war, terrorism, disease/virus, outbreaks and epidemics). The prices of individual securities may fluctuate, sometimes dramatically, from day to day. The prices of stocks and other equity securities tend to be more volatile than those of fixed-income securities.

The coronavirus pandemic and the related governmental and public responses have had and may continue to have an impact on the Fund's investments and net asset value and have led and may continue to lead to increased market volatility and the potential for illiquidity in certain classes of securities and sectors of the market Preventative or protective actions that governments may take in respect of pandemic or epidemic diseases may result in periods of business disruption, business closures, inability to obtain raw materials, supplies and component parts, and reduced or disrupted operations for the issuers in which the Fund invests. Government intervention in markets may impact interest rates, market volatility and security pricing. The occurrence, reoccurrence and pendency of such diseases could adversely affect the economies (including through changes in business activity and increased unemployment) and financial markets either in specific countries or worldwide.

GLOBAL STRATEGY FUND

Large-Cap Companies Risk.Large-cap companies tend to go in and out of favor based on market and economic conditions and tend to be less volatile than companies with smaller market capitalizations. In exchange for this potentially lower risk, the Fund's value may not rise as much as the value of funds that emphasize smaller capitalization companies. Larger, more established companies may be unable to respond quickly to new competitive challenges, such as changes in technology and consumer tastes. Larger companies also may not be able to attain the high growth rate of successful smaller companies, particularly during extended periods of economic expansion.

Mid-Cap Company Risk. Investing in mid-cap companies carries the risk that due to current market conditions these companies may be out of favor with investors. Stocks of mid-cap companies may be more volatile than those of larger companies due to, among other reasons, narrower product lines, more limited financial resources and fewer experienced managers.

Risks of Investing in Money Market Securities. An investment in the Fund is subject to the risk that the value of its investments in high-quality short-term obligations ("money market securities") may be subject to changes in interest rates, changes in the rating of any money market security and in the ability of an issuer to make payments of interest and principal.

Securities Lending Risk. Engaging in securities lending could increase the market and credit risk for Fund investments. The Fund may lose money if it does not recover borrowed securities, the value of the collateral falls, or the value of investments made with cash collateral declines. The Fund's loans will be collateralized by securities issued or guaranteed by the U.S. Government or its agencies and instrumentalities, which subjects the Fund to the credit risk of the U.S. Government or the issuing federal agency or instrumentality. If the value of either the cash collateral or the Fund's investments of the cash collateral falls below the amount owed to a borrower, the Fund also may incur losses that exceed the amount it earned on lending the security. Securities lending also involves the risks of delay in receiving additional collateral or possible loss of rights in the collateral if the borrower fails. Another risk of securities lending is the risk that the loaned portfolio securities may not be available to the Fund on a timely basis and the Fund may therefore lose the opportunity to sell the securities at a desirable price.

Currency Management Strategies Risk. Currency management strategies may substantially change the Fund's exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as the subadviser expects. In addition, currency management strategies, to the extent that they reduce the Fund's exposure to currency risks, may also reduce the Fund's ability to benefit from favorable changes in currency exchange rates. Using currency management strategies for purposes other than hedging further increases the Fund's exposure to foreign investment losses. Currency

markets generally are not as regulated as securities markets. In addition, currency rates may fluctuate significantly over short periods of time, and can reduce returns.

Performance Information

The following Risk/Return Bar Chart and Table illustrate the risks of investing in the Fund by showing changes in the Fund's performance from calendar year to calendar year and comparing the Fund's average annual returns to those of the MSCI ACWI Index (net) and two blended indices and each of their components. Effective December 7, 2021, the Fund changed its blended index against which the Fund measures its performance from the J.P. Morgan GBI Global Index (unhedged) (40%) and the MSCI ACWI Index (net) (60%) (the "Old Blended Index") to the Bloomberg Global Aggregate Index (USD hedged) (40%) and the MSCI ACWI Index (net) (60%) (the "New Blended Index"). Fund management believes that the New Blended Index is more representative of the securities in which the Fund invests. Fund management believes the New Blended Index provides additional comparative performance information and represents the Fund's overall investment strategies and portfolio composition. Fees and expenses incurred at the contract level are not reflected in the bar chart or table. If these amounts were reflected, returns would be less than those shown. Of course, past performance of the Fund is not necessarily an indication of how the Fund will perform in the future.

Effective December 7, 2021, Franklin Advisers manages the equity assets of the Fund and Brandywine Global manages the fixed income assets of the Fund. From January 29, 2020 through December 6, 2021, Franklin Advisers managed all of the assets of the Fund. Prior to January 29, 2020, Templeton Investment Counsel, LLC managed the equity assets of the Fund and Franklin Advisers managed the fixed income assets of the Fund.

During the period shown in the bar chart:

Highest Quarterly Return: March 31, 2021 9.17%

Lowest Quarterly Return: March 31, 2020 -14.67%

Year to Date Most Recent Quarter: September 30, 2021 4.71%

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Average Annual Total Returns (For the periods ended December 31, 2020)

Investment Adviser

The Fund's investment adviser is The Variable Annuity Life Insurance Company.

The Fund is subadvised by Franklin Advisers and sub-subadvised by Brandywine Global.

Portfolio Managers

Purchases and Sales of Fund Shares

Shares of the Fund may only be purchased or redeemed through Variable Contracts offered by the separate accounts of VALIC or other participating life insurance companies and through qualifying retirement plans ("Plans") and IRAs. Shares of the Fund may be purchased and redeemed each day the New York Stock Exchange is open, at the Fund's net asset value determined after receipt of a request in good order.

The Fund does not have any initial or subsequent investment minimums. However, your insurance company may impose investment or account value minimums. The prospectus (or other offering document) for your Variable Contract contains additional information about purchases and redemptions of the Fund's shares.

Tax Information

The Fund will not be subject to U.S. federal income tax so long as it qualifies as a regulated investment company and distributes its income and gains each year to its shareholders. However, contractholders may be subject to federal income tax (and a federal Medicare tax of 3.8% that applies to net income, including taxable annuity payments, if applicable) upon withdrawal from a Variable Contract. Contractholders should consult the prospectus (or other offering document) for the Variable Contract for additional information regarding taxation.

Payments to Broker-Dealers and Other Financial Intermediaries

The Fund is not sold directly to the general public but instead is offered to registered and unregistered separate accounts of VALIC and its affiliates and to Plans and IRAs. The Fund and its related companies may make payments to the sponsoring insurance company or its affiliates for recordkeeping and distribution. These payments may create a conflict of interest as they may be a factor that the insurance company considers in including the Fund as an underlying investment option in a variable contract. Visit your sponsoring insurance company's website for more information.