Variable Portfolio – Partners International Core Equity Fund
Summary Prospectus
May 1, 2026
 
The Fund may offer Class 1 and Class 2 shares to separate accounts funding variable annuity contracts and variable life insurance policies (Contracts) issued by affiliated and unaffiliated life insurance companies as well as qualified pension and retirement plans (Qualified Plans) and other qualified institutional investors authorized by Columbia Management Investment Distributors, Inc. (the Distributor). There are no exchange ticker symbols associated with shares of 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, reports to shareholders, statement of additional information and other information about the Fund online at https://www.columbiathreadneedleus.com/resources/literature. You can also get this information at no cost by calling 800.345.6611, by sending an email to serviceinquiries@columbiathreadneedle.com, or by contacting the participating insurance company or other financial intermediary through whom you hold your Fund shares. This Summary Prospectus incorporates by reference the Fund’s prospectus, dated May 1, 2026, and current Statement of Additional Information.
As with all mutual funds, the Securities and Exchange Commission has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.
 
Investment Objective
Variable Portfolio – Partners International Core Equity Fund (the Fund) seeks to provide shareholders with long-term growth of capital.
Fees and Expenses of the Fund
This table describes the fees and expenses that you may pay as an investor in the Fund. The table does not reflect any fees or expenses imposed by your Contract or Qualified Plan, which are disclosed in your separate Contract prospectus or Qualified Plan disclosure documents. If the additional fees or expenses were reflected, the expenses set forth below would be higher. 
Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
 
Class 1
Class 2
Management fees
0.80
%
0.80
%
Distribution and/or service (12b-1) fees
0.00
%
0.25
%
Other expenses
0.03
%
0.03
%
Total annual Fund operating expenses(a)
0.83
%
1.08
%
(a)
“Total annual Fund operating expenses” include acquired fund fees and expenses (expenses the Fund incurs indirectly through its investments in other investment companies) and may be higher than the ratio of expenses to average net assets shown in the Financial Highlights section of this prospectus because the ratio of expenses to average net assets does not include acquired fund fees and expenses.
 Example
The following 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 illustrates the hypothetical expenses that you would incur over the time periods indicated, and assumes that:
■
you invest $10,000 in the applicable class of Fund shares for the periods indicated,
■
your investment has a 5% return each year, and
■
the Fund’s total annual operating expenses remain the same as shown in the Annual Fund Operating Expenses table above.
The example does not reflect any fees and expenses that apply to your Contract or Qualified Plan. Inclusion of these charges would increase expenses for all periods shown.
Although your actual costs may be higher or lower, based on the assumptions listed above, your costs would be: 
 
1 year
3 years
5 years
10 years
Class 1 (whether or not shares are redeemed)
$85
$265
$460
$1,025
Class 2 (whether or not shares are redeemed)
$110
$343
$595
$1,317
Portfolio Turnover
The Fund may pay 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. 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 35% of the average value of its portfolio.
Principal Investment Strategies
Under normal circumstances, the Fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities of foreign issuers, located or traded in countries other than the U.S., that are believed to offer strong growth potential. While the Fund may invest in companies of any size, under normal circumstances, the Fund generally invests its assets in companies whose market capitalizations fall within the range of the companies that comprise the MSCI Europe, Australasia and Far East (EAFE) Index (the Capitalization Index). The market capitalization range of the companies included within the Capitalization Index was $3.1 billion to $500.5 billion as of March 31, 2026. The market capitalization range and composition of companies in the Capitalization Index are subject to change. As such, the size of the companies in which the Fund invests may change. The Fund may continue to hold a security even if the company’s market capitalization is no longer within the range of the Capitalization Index. The Fund may invest directly in foreign securities or indirectly through depositary
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Variable Portfolio – Partners International Core Equity Fund
receipts. From time to time, the Fund may focus its investments in certain countries or geographic areas, including the Asia Pacific region and Europe. The Fund may at times emphasize one or more sectors in selecting its investments, including the financials sector.
Issues such as climate change, environmental performance, labor standards and corporate governance, among others, may be evaluated in the assessment of an investment's risk and potential for profitability.
Principal Risks
An investment in the Fund involves risks, including Foreign Securities Risk, Market Risk, and Large-Cap Stock Risk, among others. Descriptions of these and other principal risks of investing in the Fund are provided below. There is no assurance that the Fund will achieve its investment objective and you may lose money. The value of the Fund’s holdings may decline, and the Fund’s net asset value (NAV) and share price may go down. 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. The significance of any specific risk to an investment in the Fund will vary over time depending on the composition of the Fund's portfolio, market conditions, and other factors. You should read all of the risk information below carefully, because any one or more of these risks may result in losses to the Fund.
Active Management Risk. Due to its active management, the Fund could underperform its benchmark index and/or other funds with similar investment objectives and/or strategies.
Depositary Receipts Risk. Depositary receipts are receipts issued by a bank or trust company reflecting ownership of underlying securities issued by foreign companies. Some foreign securities are traded in the form of American Depositary Receipts and/or Global Depositary Receipts. Depositary receipts involve risks similar to the risks associated with investments in foreign securities, including those associated with an issuer’s (and any of its related companies’) country of organization and places of business operations, which may be related to the particular political, regulatory, economic, social and other conditions or events (including, for example, military confrontations and actions, war, other conflicts, terrorism and disease/virus outbreaks and epidemics) occurring in the country and fluctuations in such country’s currency, as well as market risk tied to the underlying foreign company. In addition, holders of depositary receipts may have limited voting rights, may not have the same rights afforded to stockholders of a typical domestic company in the event of a corporate action, such as an acquisition, merger or rights offering, and may experience difficulty in receiving company stockholder communications. There is no guarantee that a financial institution will continue to sponsor a depositary receipt, or that a depositary receipt will continue to trade on an exchange, either of which could adversely affect the liquidity, availability and pricing of the depositary receipt. Changes in foreign currency exchange rates will affect the value of depositary receipts and, therefore, may affect the value of your investment in the Fund.
Equity Securities Risk. Equity securities may experience significant volatility. Such securities may fall sharply in response to adverse events affecting overall markets, a particular industry or sector, or an individual company’s financial condition.
Foreign Securities Risk. Investments in or exposure to securities of foreign companies may involve heightened risks relative to investments in or exposure to securities of U.S. companies. Investing in securities of foreign companies subjects the Fund to the risks associated with an issuer’s (and any of its related companies’) country of organization and places of business operations, including risks related to political, regulatory, economic, social, diplomatic and other conditions or events (including, for example, military confrontations and actions, war, other conflicts, terrorism and disease/virus outbreaks and epidemics) occurring in the country or region, as well as risks associated with less developed custody and settlement practices. Foreign securities may be more volatile and less liquid than securities of U.S. companies and are subject to the risks associated with potential imposition of economic and other sanctions against a particular foreign country, its nationals or industries or businesses within the country. In addition, foreign governments may impose withholding or other taxes on the Fund’s income, capital gains or proceeds from the disposition of foreign securities, which could reduce the Fund’s return on such securities. The performance of the Fund may also be negatively affected by fluctuations in a foreign currency's strength or weakness relative to the U.S. dollar, particularly to the extent the Fund invests a significant percentage of its assets in foreign securities or other assets denominated in currencies other than the U.S. dollar.
Geographic Focus Risk. The Fund may be particularly susceptible to risks related to economic, political, regulatory or other events or conditions affecting issuers and countries within the specific geographic regions in which the Fund invests. The Fund’s NAV may be more volatile than the NAV of a more geographically diversified fund.
■
Asia Pacific Region. Many of the countries in the Asia Pacific region are considered underdeveloped or developing, including from a political, economic and/or social perspective, and may have relatively unstable governments and economies based on limited business, industries and/or natural resources or commodities. Events in any one country within the region may impact other countries in the region or the region as a whole. As a result, events in
Variable Portfolio – Partners International Core Equity Fund
2
the region will generally have a greater effect on the Fund than if the Fund were more geographically diversified. This could result in increased volatility in the value of the Fund’s investments and losses for the Fund. Also, securities of some companies in the region can be less liquid than U.S. or other foreign securities, potentially making it difficult for the Fund to sell such securities at a desirable time and price.
■
Europe. The Fund is particularly susceptible to risks related to economic, political, regulatory or other events or conditions, including acts of war or other conflicts in the region, affecting issuers and countries in Europe. Countries in Europe are often closely connected and interdependent, and events in one European country can have an adverse impact on, and potentially spread to, other European countries. In addition, significant private or public debt problems in a single European Union (EU) country can pose economic risks to the EU as a whole. As a result, the Fund’s NAV may be more volatile than the NAV of a more geographically diversified fund. If securities of issuers in Europe fall out of favor, it may cause the Fund to underperform other funds that do not focus their investments in this region of the world. Any uncertainty caused by the departure of the United Kingdom (UK) from the EU, which occurred in January 2020, could have negative impacts on the UK and the EU, as well as other European economies and the broader global economy. These could include negative impacts on currencies and financial markets as well as increased volatility and illiquidity, and potentially lower economic growth in markets in Europe, which could adversely affect the value of your investment in the Fund.
Issuer Risk. An issuer in which the Fund invests or to which it has exposure may perform poorly or below expectations, and the value of its securities may therefore decline, which may negatively affect the Fund’s performance. Underperformance of an issuer may be caused by poor management decisions, competitive pressures, breakthroughs in technology, reliance on suppliers, labor problems or shortages, corporate restructurings, fraudulent disclosures, natural disasters, military confrontations and actions, war, other conflicts, terrorism, disease/virus outbreaks, epidemics or other events, conditions and factors which may impair the value of your investment in the Fund.
■
Small- and Mid-Cap Stock Risk. Investments in small- and mid-capitalization companies (small- and mid-cap companies) often involve greater risks than investments in larger, more established companies (larger companies) because small- and mid-cap companies tend to have less predictable earnings and may lack the management experience, financial resources, product diversification and competitive strengths of larger companies. Securities of small- and mid-cap companies may be less liquid and more volatile than the securities of larger companies.
■
Large-Cap Stock Risk. Investments in larger companies may involve certain risks associated with their larger size. For instance, larger companies may be less able to respond quickly to new competitive challenges, such as changes in consumer tastes or innovation from smaller competitors. Also, larger companies are sometimes less able to achieve as high growth rates as successful smaller companies, especially during extended periods of economic expansion.
Liquidity Risk. Liquidity risk is the risk associated with any event, circumstance, or characteristic of an investment or market that negatively impacts the Fund’s ability to sell, or realize the proceeds from the sale of, an investment at a desirable time or price. Liquidity risk may arise because of, for example, a lack of marketability of the investment, which means that when seeking to sell its portfolio investments, the Fund could find that selling is more difficult than anticipated, especially during times of high market volatility. Market participants attempting to sell the same or a similar instrument at the same time as the Fund could exacerbate the Fund’s exposure to liquidity risk. The Fund may have to accept a lower selling price for the holding, sell other liquid or more liquid investments that it might otherwise prefer to hold (thereby increasing the proportion of the Fund’s investments in less liquid or illiquid securities), or forego another more appealing investment opportunity. The liquidity of Fund investments may change significantly over time and certain investments that were liquid when purchased by the Fund may later become illiquid, particularly in times of overall economic distress. Changing regulatory, market or other conditions or environments (for example, the interest rate or credit environments) may also adversely affect the liquidity and the price of the Fund's investments. Judgment plays a larger role in valuing illiquid or less liquid investments as compared to valuing liquid or more liquid investments. Price volatility may be higher for illiquid or less liquid investments as a result of, for example, the relatively less frequent pricing of such securities (as compared to liquid or more liquid investments). Generally, the less liquid the market at the time the Fund sells a portfolio investment, the greater the risk of loss or decline of value to the Fund. Overall market liquidity and other factors can lead to an increase in redemptions, which may negatively impact Fund performance and NAV, including, for example, if the Fund is forced to sell investments in a down market. Foreign securities can present enhanced liquidity risks, including as a result of less developed custody, settlement or other practices of foreign markets.
Market Risk. The Fund may incur losses due to declines in the value of one or more securities in which it invests. These declines may be due to factors affecting a particular issuer, or the result of, among other things, political, regulatory, market, economic or social developments affecting the relevant market(s) more generally. In addition, turbulence in financial markets and reduced liquidity in equity, credit and/or fixed income markets may negatively
3
Variable Portfolio – Partners International Core Equity Fund
affect many issuers, which could adversely affect the Fund’s ability to price or value hard-to-value assets in thinly traded and closed markets and could cause significant redemptions and operational challenges. Global economies and financial markets are increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. These risks may be magnified if certain events or developments adversely interrupt the global supply chain; in these and other circumstances, such risks might affect companies worldwide. As a result, local, regional or global events such as terrorism, war, other conflicts, natural disasters, disease/virus outbreaks and epidemics or other public health issues, recessions, depressions or other events – or the potential for such events – could have a significant negative impact on global economic and market conditions.
Sector Risk. At times, the Fund may have a significant portion of its assets invested in securities of companies conducting business in a related group of industries within one or more economic sectors, including the financials sector. Companies in the same sector may be similarly affected by economic, regulatory, political or market events or conditions, which may make the Fund vulnerable to unfavorable developments in that group of industries or economic sector.
■
Financials Sector. The Fund is vulnerable to the particular risks that may affect companies in the financials sector. Companies in the financials sector are subject to certain risks, including the risk of regulatory change, decreased liquidity in credit markets and unstable interest rates. Such companies may have concentrated portfolios, such as a high level of loans to one or more industries or sectors, which makes them vulnerable to economic conditions that affect such industries or sectors. Performance of such companies may be affected by competitive pressures and exposure to investments, agreements and counterparties, including credit products that, under certain circumstances, may lead to losses (e.g., subprime loans). Companies in the financials sector are subject to extensive governmental regulation that may limit the amount and types of loans and other financial commitments they can make, and the interest rates and fees they may charge. In addition, profitability of such companies is largely dependent upon the availability and the cost of capital.
Sustainability and ESG Integration Risks. The sustainability characteristics that may be evaluated as part of the Fund’s investment process, including issues such as climate change, environmental performance, labor standards and corporate governance, among others, are anticipated to evolve over time and one or more characteristics may not be relevant with respect to all issuers that are eligible for investment. The relevance and weightings of specific sustainability characteristics to the investment process vary across asset classes, sectors and strategies. Sustainability characteristics are not the only factors that may be considered in selecting investments and as a result, investments may not have favorable sustainability characteristics. While the integration of sustainability analysis into the Fund’s investment process has the potential to identify financial risks and potentially contribute to the Fund’s long-term performance, there is no guarantee that the integration of sustainability analysis will result in better performance. Investors can differ in their views of what constitutes positive or negative sustainability characteristics. Further, the regulatory landscape with respect to sustainability investing is still developing and the Fund may modify or alter its investment process with respect to sustainability integration.
Integrating financially material environmental, social, and governance (ESG) analysis into the investment process carries the risk that the Fund's portfolio may perform differently from, and may underperform, funds that do not integrate ESG into their analysis, or funds that evaluate different ESG characteristics. ESG characteristics are not the only factors considered and as a result, the Fund's portfolio's investments may not have favorable ESG characteristics or high ESG ratings.
Value Securities Risk. Value securities are securities of companies that may have experienced, for example, adverse business, industry or other developments or may be subject to special risks that have caused the securities to be out of favor and, in turn, potentially undervalued. The market value of a portfolio security may not meet the perceived value assessment of that security as determined by the portfolio managers, or may decline in price, even though the securities are already believed to be undervalued by the portfolio managers. There is also a risk that it may take longer than expected for the value of these investments to rise to the perceived value as determined by the portfolio managers. In addition, value securities, at times, may not perform as well as growth securities or the stock market in general, and may be out of favor with investors for varying periods of time.
Variable Portfolio – Partners International Core Equity Fund
4
Performance Information
The following bar chart and table show you how the Fund has performed in the past, and can help you understand the risks of investing in the Fund. The bar chart shows how the Fund’s Class 2 share performance has varied for each full calendar year shown. The table below the bar chart compares the Fund’s returns for the periods shown with a broad measure of market performance.
Except for differences in annual returns resulting from differences in expenses (where applicable), the share classes of the Fund would have substantially similar annual returns because all share classes of the Fund invest in the same portfolio of securities.
The returns shown do not reflect any fees and expenses imposed under your Contract or Qualified Plan and would be lower if they did.
The Fund’s performance prior to May 2021 reflects returns achieved by one or more different subadviser(s) that managed the Fund according to different principal investment strategies. If the Fund’s current subadviser and strategies had been in place for the prior periods, results shown may have been different.
The Fund’s past performance is no guarantee of how the Fund will perform in the future. Updated performance information can be obtained by calling toll-free 800.345.6611 or visiting columbiathreadneedleus.com. 
Year by Year Total Return (%)
as of December 31 Each Year
Best and Worst Quarterly Returns
During the Period Shown in the Bar Chart
 
Best
2nd Quarter 2020
17.86%
Worst
1st Quarter 2020
-24.08%
 Average Annual Total Returns (for periods ended December 31, 2025)
 
 
Share Class
Inception Date
1 Year
5 Years
10 Years
Class 1
05/07/2010
24.85%
7.29%
6.39%
Class 2
05/07/2010
24.55%
7.02%
6.12%
MSCI EAFE Index (Net) (reflects reinvested dividends net of withholding taxes but
reflects no deductions for fees, expenses or other taxes)
 
31.22%
8.92%
8.18%
 
Fund Management
Investment Manager: Columbia Management Investment Advisers, LLC
Subadviser: Schroder Investment Management North America Inc. (SIMNA Inc.)
Sub-Subadviser: Schroder Investment Management North America Limited (SIMNA Ltd.) (SIMNA Inc. and SIMNA Ltd., collectively referred to as Schroders) 
Portfolio Management
Title
Role with Fund
Managed Fund Since
James Gautrey, CFA
Portfolio Manager of Schroders
Co-Portfolio Manager
2020
Simon Webber, CFA
Portfolio Manager of Schroders
Co-Portfolio Manager
2020
Purchase and Sale of Fund Shares
The Fund is available for purchase through Contracts offered by the separate accounts of participating insurance companies or Qualified Plans or by other eligible investors authorized by Columbia Management Investment Distributors, Inc. (the Distributor). Shares of the Fund may not be purchased or sold by individual owners of Contracts or Qualified Plans. If you are a Contract holder or Qualified Plan participant, please refer to your separate Contract prospectus or Qualified Plan disclosure documents for information about minimum investment requirements and how to purchase and redeem shares of the Fund on days the Fund is open for business.
5
Variable Portfolio – Partners International Core Equity Fund
Tax Information
The Fund normally distributes its net investment income and net realized capital gains, if any, to its shareholders, which are generally the participating insurance companies and Qualified Plans investing in the Fund through separate accounts. These distributions may not be taxable to you as the holder of a Contract or a participant in a Qualified Plan. Please consult the prospectus or other information provided to you by your participating insurance company and/or Qualified Plan regarding the U.S. federal income taxation of your contract, policy and/or plan.
Payments to Broker-Dealers and Other Financial Intermediaries
If you make allocations to the Fund, the Fund, its Distributor or other related companies may pay participating insurance companies or other financial intermediaries for the allocation (sale) of Fund shares and related services in connection with such allocations to the Fund. These payments may create a conflict of interest by influencing the participating insurance company, other financial intermediary or your salesperson to recommend an allocation to the Fund over another fund or other investment option. Ask your financial advisor or salesperson or visit your financial intermediary’s website for more information.
Variable Portfolio – Partners International Core Equity Fund
6
 
Columbia Threadneedle Investments (Columbia Threadneedle) is the global brand name of the Columbia and Threadneedle group of
companies.
The Fund is distributed by Columbia Management Investment Distributors, Inc., 290 Congress Street, Boston, MA 02210.
© 2026 Columbia Threadneedle. All rights reserved.
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