Transamerica Mid Cap Growth

Summary Prospectus March 1, 2022  

Class R4 (TMIFX) Class R (TMIRX) Class I3 (TMITX)

Thank you for being a valued Transamerica shareholder. This Summary Prospectus will provide you with updated information about your investment in the fund.

Before you invest, you may want to review the fund’s prospectus, which contains more information about the fund and its risks. You can find the fund’s prospectus and other information about the fund, including the fund’s statement of additional information and most recent reports to shareholders, online at www.transamerica.com. You can also get this information at no cost by calling 866-414-6349 or by sending an e-mail request to orders@mysummaryprospectus.com, or from your financial professional. The fund’s prospectus and statement of additional information dated March 1, 2022, as supplemented from time to time, and the independent registered public accounting firm’s report and financial statements in the fund’s annual report to shareholders, dated October 31, 2021, are incorporated by reference into this summary prospectus.

Investment Objective: Seeks long term capital appreciation.

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

Shareholder Fees (fees paid directly from your investment) 

Class:	R4	R	I3
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	None	None	None
Maximum deferred sales charge (load) (as a percentage of purchase price or redemption proceeds, whichever is lower)	None	None	None

 

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

Class:	R4	R	I3
Management fees	0.69%	0.69%	0.69%
Distribution and service (12b-1) fees	0.25%	0.50%	None
Other expenses	0.07%	0.06%	0.07%
Total annual fund operating expenses	1.01%	1.25%	0.76%
Fee waiver and/or expense reimbursement1	0.06%	0.00%	0.00%
Total annual fund operating expenses after fee waiver and/or expense reimbursement	0.95%	1.25%	0.76%

1

Contractual arrangements have been made with the fund’s investment manager, Transamerica Asset Management, Inc. (“TAM”), through March 1, 2023 to waive fees and/or reimburse fund expenses to the extent that total annual fund operating expenses exceed 0.95% for Class R4 shares, 1.35% for Class R shares and 0.85% for Class I3 shares, excluding, as applicable, acquired fund fees and expenses, interest, taxes, brokerage commissions, dividend and interest expenses on securities sold short, extraordinary expenses and other expenses not incurred in the ordinary course of the fund’s business. These arrangements cannot be terminated prior to March 1, 2023 without the Board of Trustees’ consent. TAM is permitted to recapture amounts waived and/or reimbursed to a class during any of the 36 months from the date on which TAM waived fees and/or reimbursed expenses for the class if the class’ total annual fund operating expenses have fallen to a level below the limits described above. In no case will TAM recapture any amount that would result, on any particular business day of the fund, in the class’ total annual operating expenses exceeding the applicable limits described above or any other lower limit then in effect.

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 all 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. Only the 1 year dollar amount shown below reflects TAM's agreement to waive fees and/or reimburse fund expenses. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

	1 year	3 years	5 years	10 years
Class R4	$97	$316	$552	$1,231
Class R	$127	$397	$686	$1,511
Class I3	$78	$243	$422	$942

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 portfolio turnover rate for the fund was 99% of the average value of its portfolio.

Principal Investment Strategies: The fund normally invests primarily in stocks of medium sized companies which the fund’s sub-adviser, Wellington Management Company LLP (the “sub-adviser”), believes will earn high returns on invested capital, benefit from long term secular growth trends, and meet the sub-adviser’s long term valuation criteria. Under normal circumstances, the sub-adviser invests at least 80% of the fund’s net assets (plus the amount of borrowings, if any, for investment purposes) in securities of medium sized (or mid-cap) companies and other investments with similar economic characteristics. The sub-adviser considers mid-cap companies to be companies with market capitalizations that, at the time of initial purchase, are within the range of capitalization of the companies that are included in the Russell Midcap® Growth Index1.  As of December 31, 2021, the market capitalizations of companies in the Russell Midcap® Growth Index

ranged from approximately $1.22 billion to $58.76 billion. Over time, the capitalizations of the companies in the Russell Midcap®Growth Index will change. As they do, the size of the companies in which the fund invests may change.

The fund’s equity securities may include common stocks and preferred stocks listed on the New York Stock Exchange and on other national securities exchanges and, generally to a lesser extent, stocks that are traded over-the-counter. The fund normally emphasizes common stocks. The fund may also invest in foreign securities. Growth stocks as a group may be out of favor and underperform the overall equity market for a long period of time, for example, while the market favors “value” stocks.

The fund may also invest its assets in cash, cash equivalent securities or short-term debt securities, repurchase agreements and money market instruments. Generally, 5% or less of the fund’s assets will be invested in cash and cash equivalents.

1 “Russell®” and other service marks and trademarks related to the Russell indexes are trademarks of the London Stock Exchange Group companies.

Principal Risks: Risk is inherent in all investing. Many factors and risks affect the fund's performance, including those described below. The value of your investment in the fund, as well as the amount of return you receive on your investment, may fluctuate significantly day to day and over time. You may lose part or all of your investment in the fund or your investment may not perform as well as other similar investments. The following is a summary description of principal risks (in alphabetical order after certain key risks) 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 or any other government agency.You may lose money if you invest in this fund.

Market – The market prices of the fund’s securities or other assets may go up or down, sometimes rapidly or unpredictably, due to general market conditions, overall economic trends or events, inflation, changes in interest rates, governmental actions or interventions, actions taken by the U.S. Federal Reserve or foreign central banks, market disruptions caused by tariffs, trade disputes or other factors, political developments, investor sentiment, the global and domestic effects of a pandemic, and other factors that may or may not be related to the issuer of the security or other asset. If the market prices of the fund’s securities and assets fall, the value of your investment will go down.

Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading and tariff arrangements, public health events (such as the spread of infectious disease), wars, terrorism, cybersecurity events, technology and data interruptions, natural disasters, and other circumstances in one or more countries or regions could be highly disruptive to, and have profound impacts on, global economies or markets. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the fund’s investments may go down.

The pandemic of the novel coronavirus respiratory disease designated COVID-19 has resulted in extreme volatility in the financial markets, a domestic and global economic downturn, severe losses, particularly to some sectors of the economy and

individual issuers, and reduced liquidity of many instruments. There also have been significant disruptions to business operations, including business closures; strained healthcare systems; disruptions to supply chains and employee availability; large fluctuations in consumer demand; and widespread uncertainty regarding the duration and long-term effects of the pandemic. The domestic and global economic downturn may be prolonged. The pandemic may result in domestic and foreign political and social instability, damage to diplomatic and international trade relations, and continued volatility and/or decreased liquidity in the securities markets. Developing or emerging market countries may be more impacted by the pandemic.

The U.S. government and the Federal Reserve, as well as certain foreign governments and central banks, have taken extraordinary actions to support local and global economies and the financial markets in response to the COVID-19 pandemic, including by pushing interest rates to very low levels. This and other government intervention into the economy and financial markets to address the pandemic may not work as intended, particularly if the efforts are perceived by investors as being unlikely to achieve the desired results. Government actions to mitigate the economic impact of the pandemic have resulted in large expansion of government deficits and debt, the long-term consequences of which are not known. Rates of inflation have recently risen, which could adversely affect economies and markets.

The COVID-19 pandemic could continue to adversely affect the value and liquidity of the fund’s investments, impair the fund’s ability to satisfy redemption requests, and negatively impact the fund’s performance. In addition, the pandemic, and measures taken to mitigate its effects, could result in disruptions to the services provided to the fund by its service providers.

Growth Stocks – Returns on growth stocks may not move in tandem with returns on other categories of stocks or the market as a whole. Growth stocks typically are particularly sensitive to market movements and may involve larger price swings because their market prices tend to reflect future expectations. When it appears those expectations may not be met, the prices of growth securities typically fall. Growth stocks as a group may be out of favor and underperform the overall equity market for a long period of time, for example, while the market favors “value” stocks.

Medium Capitalization Companies – The fund will be exposed to additional risks as a result of its investments in the securities of medium capitalization companies. Investing in medium capitalization companies involves greater risk than is customarily associated with more established companies. The prices of securities of medium capitalization companies generally are more volatile and are more likely to be adversely affected by changes in earnings results and investor expectations or poor economic or market conditions. Securities of medium capitalization companies may underperform larger capitalization companies, may be harder to sell at times and at prices the portfolio managers believe appropriate and may offer greater potential for losses.

Equity Securities – Equity securities generally have greater risk of loss than debt securities. Stock markets are volatile and the value of equity securities may go up or down, sometimes rapidly and unpredictably. The value of equity securities fluctuates based on real or perceived changes in a company’s financial condition, factors affecting a particular industry or industries, and overall

market, economic and political conditions. If the market prices of the equity securities owned by the fund fall, the value of your investment in the fund will decline. The fund may lose its entire investment in the equity securities of an issuer. A change in financial condition or other event affecting a single issuer may adversely impact securities markets as a whole.

Management – The value of your investment may go down if the investment manager’s or sub-adviser's judgments and decisions are incorrect or otherwise do not produce the desired results, or if the investment strategy does not work as intended. You may also suffer losses if there are imperfections, errors or limitations in the quantitative, analytic or other tools, resources, information and data used, investment techniques applied, or the analyses employed or relied on, by the investment manager or sub-adviser, if such tools, resources, information or data are used incorrectly or otherwise do not work as intended, or if the investment manager’s or sub-adviser's investment style is out of favor or otherwise fails to produce the desired results. Any of these things could cause the fund to lose value or its results to lag relevant benchmarks or other funds with similar objectives.

Active Trading – The fund may purchase and sell securities without regard to the length of time held. Active trading may be more pronounced during periods of market volatility, may have a negative impact on performance and may generate greater amounts of short-term capital gains.

Counterparty – The fund could lose money if the counterparties to derivatives, repurchase agreements and other financial contracts entered into for the fund do not fulfill their contractual obligations. In addition, the fund may incur costs and may be hindered or delayed in enforcing its rights against a counterparty.

Credit – If an issuer or other obligor (such as a party providing insurance or other credit enhancement) of a security held by the fund or a counterparty to a financial contract with the fund is unable or unwilling to meet its financial obligations, or is downgraded or perceived to be less creditworthy (whether by market participants or otherwise), or if the value of any underlying assets declines, the value of your investment will typically decline. A decline may be significant, particularly in certain market environments. In addition, the fund may incur costs and may be hindered or delayed in enforcing its rights against an issuer, obligor or counterparty.

Currency – The value of a fund’s investments in securities denominated in foreign currencies increases or decreases as the rates of exchange between those currencies and the U.S. dollar change. U.S. dollar-denominated securities of foreign issuers may also be affected by currency risk. Currency exchange rates can be volatile and may fluctuate significantly over short periods of time. Currency conversion costs and currency fluctuations could reduce or eliminate investment gains or add to investment losses. A fund may be unable or may choose not to hedge its foreign currency exposure.

Foreign Investments – Investing in securities of foreign issuers or issuers with significant exposure to foreign markets involves additional risks. Foreign markets can be less liquid, less regulated, less transparent and more volatile than U.S. markets. The value of the fund’s foreign investments may decline, sometimes rapidly or unpredictably, because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable

or unsuccessful government actions, reduction of government or central bank support, tariffs and trade disruptions, sanctions, political or financial instability, social unrest or other adverse economic or political developments. Foreign investments may also be subject to different accounting practices and different regulatory, legal, auditing, financial reporting and recordkeeping standards and practices, and may be more difficult to value than investments in U.S. issuers.

Large Shareholder – A significant portion of the fund’s shares may be owned by other funds sponsored by Transamerica. Transactions by these funds may be disruptive to the management of the fund. For example, the fund may experience large redemptions and could be required to sell securities at a time when it may not otherwise desire to do so. Such transactions may increase the fund’s brokerage and/or other transaction costs. These transactions may also accelerate the realization of taxable income to shareholders if such sales of investments resulted in gains. In addition, sizeable redemptions could cause the fund’s total expenses to increase.

Leveraging – To the extent that the fund borrows or uses derivatives or other investments, such as ETFs, that have embedded leverage, your investment may be subject to heightened volatility, risk of loss and costs. Other risks also will be compounded because leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger pool of assets than the fund would otherwise have. Use of leverage may result in the loss of a substantial amount, and possibly all, of the fund’s assets. The fund also may have to sell assets at inopportune times to satisfy its obligations or meet segregation, coverage or margin requirements.

Preferred Stock – Preferred stock’s right to dividends and liquidation proceeds is junior to the rights of a company’s debt securities. The value of preferred stock may be subject to factors that affect fixed-income and equity securities. The value of preferred stock tends to vary more with fluctuations in the underlying common stock and less with fluctuations in interest rates and tends to exhibit greater volatility.

Repurchase Agreements – In a repurchase agreement, the fund purchases securities from a broker-dealer or a bank, called the counterparty, upon the agreement of the counterparty to repurchase the securities from the fund at a later date, and at a specified price. The securities purchased serve as the fund's collateral for the obligation of the counterparty to repurchase the securities. If the counterparty does not repurchase the securities, the fund is entitled to sell the securities, but the fund may not be able to sell them for the price at which they were purchased, thus causing a loss. If the counterparty becomes insolvent, there is some risk that the fund will not have a right to the securities, or the immediate right to sell the securities.

Performance: The bar chart and the table below provide some indication of the risks of investing in the fund. The bar chart shows how the fund’s performance has varied from year to year. The table shows how the fund’s average annual total returns for different periods compare to the returns of a broad measure of market performance.

The fund acquired the assets and assumed the liabilities of three Transamerica Partners funds, including Transamerica Partners Institutional Mid Growth (the “predecessor fund”), on March 10, 2017, and the predecessor fund was the accounting and performance survivor of the reorganizations. This means that the predecessor fund's financial and performance history became the financial and performance history of the fund. In the reorganization of the predecessor fund, former shareholders of the predecessor fund received Class R4 shares of the fund. The performance of Class R4 shares includes the performance of the predecessor fund prior to the reorganizations, and has not been restated to reflect the annual operating expenses of Class R4 shares.

Absent any applicable fee waivers and/or expense limitations, performance would have been lower.

As with all mutual funds, past performance (before and after taxes) is not a prediction of future results. Updated performance information is available on our website at www.transamerica.com/investments-fund-center or by calling 1-888-233-4339.

Prior to June 28, 2013, the predecessor fund had a different sub-adviser, a different investment objective and used different investment strategies. The performance set forth prior to that date is attributable to that sub-adviser.

Prior to December 1, 2018, the fund had a different sub-adviser and used different investment strategies. The performance set forth for the period between June 28, 2013 and November 30, 2018 is attributable to that sub-adviser.

Annual Total Returns (calendar years ended December 31) - Class R4

  

	Quarter Ended	Return
Best Quarter:	6/30/2020	32.60%
Worst Quarter:	3/31/2020	-21.21%

Average Annual Total Returns (periods ended December 31, 2021) 

	1 Year	5 Years	10 Years	Since Inception	Inception Date
Class R4					11/7/2001
Return before taxes	6.54%	14.21%	13.08%
Return after taxes on distributions	-3.16%	9.37%	8.42%
Return after taxes on distributions and sale of fund shares	7.29%	9.87%	8.85%
Class R (Return before taxes only)	6.09%	N/A	N/A	12.87%	3/10/2017
Class I3 (Return before taxes only)	6.61%	N/A	N/A	13.44%	3/10/2017
Russell Midcap® Growth Index1 (reflects no deduction for fees, expenses or taxes)	12.73%	19.83%	16.63%	19.29%

1

“Russell®” and other service marks and trademarks related to the Russell indexes are trademarks of the London Stock Exchange Group companies.

The after-tax returns are calculated using the historic highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns may depend on the investor’s individual tax situation and may differ from those shown. After-tax returns may not be relevant if the investment is made through a tax-exempt or tax-deferred account, such as a 401(k) plan.

After-tax returns are presented for only one class, and returns for other classes are presented before taxes only and will vary.

Management: 

Investment Manager: Transamerica Asset Management, Inc. Sub-Adviser: Wellington Management Company LLP Portfolio Manager:
Timothy N. Manning	Portfolio Manager	since December 2018

Purchase and Sale of Fund Shares: Shares of the fund are available to individual and institutional investors through certain retirement plans. These plans include, but are not limited to, 401(k), 403(b) and 457 Plans, Money Purchase Plans, Profit Sharing Plans, Simplified Employee Pension Plans, Keogh Plans, defined benefit plans, nonqualified deferred compensation plans and IRAs. Shares may be purchased by these investors through a plan administrator, recordkeeper or authorized financial intermediary. If you are a participant in a plan, you should obtain the plan’s conditions for participation from your plan administrator. Shares of the fund are also available to other investors, including endowment funds and foundations, any state, county or city, or its instrumentality, department, authority or agency, and accounts registered to insurance companies, trust companies and bank trust departments. Such investors may purchase shares in the fund through the transfer agent directly. You may purchase shares of the fund on any day the New York Stock Exchange is open for business. Requests to purchase shares for the fund should be mailed to Transamerica Fund Services, Inc., P.O. Box 219945, Kansas City, MO 64121-9945. Participants in retirement plans administered by Transamerica Retirement Solutions should contact Transamerica Retirement Solutions at 1-800-755-5801 for additional information. If you would like to purchase shares in a fund by a wire transfer, please call 1-888-233-4339 for wire transfer instructions. You buy and redeem shares at the fund’s next-determined net asset value (“NAV”)

after receipt of your request in good order. There is no minimum investment for eligible retirement plans investing in Class R shares. The minimum initial investment for Class R4 shares is $5,000. There is no minimum for subsequent investments in Class R or R4 shares. A retirement plan may, however, impose minimum investment requirements. Plan participants or IRA holders should consult their plan administrator, recordkeeper or authorized financial intermediary.

Redemption requests may be made by mail and, in certain circumstances, telephone. The proceeds of the redemption will be sent by mail or, if authorized on the Account Application, wire transfer. Requests to redeem shares of the fund should be mailed to Transamerica Fund Services, Inc., P.O. Box 219945, Kansas City, MO 64121-9945. You may redeem shares by telephone if you authorized telephone redemptions on your Account Application. The fund reserves the right to refuse a telephone redemption request if it is believed it is advisable to do so. The telephone redemption option may be suspended or terminated at any time without advance notice.

Class I3 shares are only available to certain funds of funds, registered and unregistered insurance company separate accounts and collective investment trusts. Class I3 shares do not have a minimum initial investment for those that qualify for the share class or a minimum subsequent investment amount.

Tax Information: Fund distributions may be taxable as ordinary income, qualified dividend income, or capital gains, except when your investment is in an IRA, 401(k) or other tax-advantaged investment plan. In that case, you may be taxed when you take a distribution from such plan, depending on the type of plan, the circumstances of your distribution and other factors.

 

In an effort to reduce paper mailings and conserve natural resources, we encourage you to visit our website, www.transamerica.com, to set up an account and enroll in eDelivery.

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