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Before you invest, you may want to review the Column Mid Cap Fund (the “Mid Cap Fund” or the “Fund”) Statutory Prospectus and Statement of Additional Information, which contain more information about the Fund and its risks. The current Statutory Prospectus and Statement of Additional Information dated October 31, 2023, are incorporated by reference into this Summary Prospectus. You can find the Fund’s Statutory Prospectus, Statement of Additional Information and other information about the Fund online at https://columnfunds.com/. You can also get this information at no cost by calling 866-950-4644 or by sending an email request to nmis-online@northwesternmutual.com.

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. You may pay other fees, such as annual program or administrative fees, for participating in an advisory program sponsored by Northwestern Mutual Wealth Management Company (“NMWMC”), an affiliate of the Adviser (defined below), which are not reflected in the table and Example below.


Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Management Fees			0.70%
Other Expenses(1)			0.09%
Shareholder Servicing Plan Fees			0.06%
Total Annual Fund Operating Expenses			0.85%
Management Fee Waiver(2)			-0.36%
Total Annual Fund Operating Expenses after Management Fee Waiver			0.49%

(2)Mason Street Advisors, LLC (the “Adviser”), the Fund’s investment adviser, has contractually agreed, through at least October 31, 2025, to waive its management fees to the extent such management fees exceed the management fees that the Adviser is required to pay to the Fund’s designated sub-advisers for management of allocated portions of the Fund. The Adviser may not recoup these waivers in future periods.

Example. This Example is intended to help you compare the costs 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 hold or redeem 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. The management fee waiver discussed in the table above is reflected only through October 31, 2025. Although your actual costs may be higher or lower, based on these assumptions, 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). 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 transaction costs and potentially higher taxes, which are not reflected in the Total Annual Fund Operating Expenses or in the Example, affect the Fund’s performance. Because the Fund is newly organized, portfolio turnover information is not yet available.

Principal Investment Strategies. Under normal market conditions, the Fund will invest at least 80% of net assets (plus any borrowings for investment purposes) in stocks of mid-capitalization companies (“mid-cap companies”). The Fund considers a company to be a mid-cap company if it has a market capitalization within the collective range of the Russell MidCap® Index and the S&P MidCap 400® Index. As of September 30, 2023, this range was approximately $1.1 billion to $53.5 billion. The market capitalization range of these indices changes over time. Securities of companies whose market capitalizations no longer fall within this collective range after purchase may continue to be held by the Fund.

The Fund may invest in common stocks issued by U.S. and foreign mid-cap companies. The Fund may also invest in American Depositary Receipts (“ADRs”), European Depositary Receipts (“EDRs”) and Global Depositary Receipts (“GDRs”). Depositary receipts represent interests in foreign securities on deposit by banks. The Fund may also invest in real estate investment trusts (“REITs”), which are companies that own and/or manage real estate properties.

The Fund incorporates a mix of investment styles and philosophies, targeting a balance of growth and value over time. The Adviser is responsible for developing, constructing and monitoring the asset allocation and portfolio strategy for the Fund. The Adviser believes the Fund’s reward and risk characteristics can be enhanced, using a “manager of managers” approach, by employing multiple sub-advisory firms with distinct and complementary investment styles and approaches for the Fund. When determining the allocation of the Fund’s assets among sub-advisers, the Adviser uses proprietary qualitative and quantitative research, considering factors including, but not limited to, manager experience and investment approach, expected risk and return potential, portfolio characteristics, and costs. Sub-adviser asset allocations are determined by the Adviser and the Adviser may increase or decrease a sub-adviser’s asset allocation as deemed appropriate by the Adviser.

The sub-adviser invests in U.S. mid-cap companies, employing a fundamental, bottom-up process to seek to identify high-quality companies selling at a discount to fair value. The approach aims to balance participating in the market’s upside with mitigating its downside.

The sub-adviser invests in a broad set of U.S. mid-cap companies, taking into consideration valuation, profitability, and levels of investment when selecting and weighting securities. The strategy uses a systematic investment process designed to reduce unnecessary risks and costs.

The sub-adviser invests in U.S. mid-cap companies and uses bottom-up fundamental analysis to make investment decisions. The strategy is designed to identify companies with attractive valuation, sound business fundamentals, and improving business momentum.

The sub-adviser invests in U.S. mid-cap companies, using an industry-specific screening process to identify stocks with the greatest excess return potential. The team uses rigorous bottom-up analysis to build a portfolio of high-quality businesses with an emphasis on limiting downside risk.

The sub-adviser invests in U.S. mid-cap companies, focusing on growth companies that pioneer new markets or are industry leaders run by accomplished management teams. The process relies on bottom-up fundamental analysis and seeks to proactively manage risk.

The sub-adviser invests in U.S. mid-cap companies, using bottom-up research to build a high conviction portfolio, a focused group of stocks that it believes has the best performance potential, of businesses it believes are high-quality, such as those with durable competitive advantages, excellent management, and lower financial risk.

Principal Risks. Before investing in the Fund, you should carefully consider your own investment goals, the amount of time you are willing to leave your money invested, and the amount of risk you are willing to take. Remember, in addition to possibly not achieving your investment goals, you could lose all or a portion of your investment in the Fund over long or even short periods of time. The principal risks of investing in the Fund are:

•Management Risk. The Adviser’s investment strategies for the Fund, including the “manager of managers” approach described above, may not result in an increase in the value of your investment or in overall performance equal to other investments.

•New Fund Risk. The Fund is new with a limited operating history, and there can be no assurance that the Fund will grow to or maintain an economically viable size, in which case the Adviser may recommend to liquidate the Fund.

•Recent Market Events Risk. U.S. and international markets have experienced significant periods of volatility in recent months and years due to a number of economic, political and global macro factors including rising inflation, uncertainty regarding central banks’ interest rate increases, the possibility of a national or global recession, trade tensions, political events, the war between Russia and Ukraine and the continued impact of the coronavirus (COVID-19) global pandemic. The recovery from COVID-19 is proceeding at slower than expected rates and may last for a prolonged period of time. As a result of continuing political tensions and armed conflicts, including the war between Ukraine and Russia, the U.S. and the European Union imposed sanctions on certain Russian individuals and companies, including certain financial institutions, and have limited certain exports and imports to and from Russia. The war has contributed to recent market volatility and may continue to do so. Continuing market volatility as a result of recent market conditions or other events may have an adverse effect on the performance of the Fund.

•Common Stock Risk. Common stock represents a proportionate share of the ownership of a company and its value is based on the success of the company’s business, any income paid to stockholders, the value of its assets, and general market conditions. In addition to the general risks of equity securities, investments in common stocks are subject to the risk that in the event a company in which the Fund invests is liquidated, the holders of preferred stock and creditors of that company will be paid in full before any payments are made to the Fund as a holder of common stock. It is possible that all assets of that company will be exhausted before any payments are made to the Fund.

•Growth Stock Risk. The prices of growth stocks may be more sensitive to changes in current or expected earnings than the prices of other stocks and may be out of favor with investors at different periods of time. Compared to value stocks, growth stocks may experience larger price swings.

•Equity Market Risk. The equity securities held in the Fund’s portfolio may experience sudden, unpredictable drops in value or long periods of decline in value. This may occur because of factors that affect securities markets generally or factors affecting specific industries, sectors or companies in which the Fund invests.

•Mid-Cap Company Risk. The Fund may invest substantially all of its assets in the stocks of mid-cap companies. Mid-cap companies may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, these mid-cap companies may pose additional risks, including liquidity risk, because these companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, mid-cap stocks may be more volatile than those of larger companies.

•Foreign Securities and Currency Risk. Non-U.S. securities are subject to risks relating to political, social and economic developments abroad and differences between U.S. and foreign regulatory requirements and market practices, including fluctuations in foreign currencies. The securities of foreign companies are frequently denominated in foreign currencies. A change in the value of a foreign currency against the U.S. dollar will result in a corresponding change in value of securities denominated in that currency. Issuers of foreign securities may not be required to provide operational or financial information that is as timely or reliable as those required for issuers of U.S. securities. The income or dividends earned on foreign securities may be subject to foreign withholding taxes. To the extent that a market is closed while the markets for the underlying currencies remain open, certain markets may not always reflect significant price and rate movements.

•Depositary Receipts Risk. ADRs and similar depositary receipts typically will be subject to certain of the risks associated with direct investments in the securities of non-U.S. companies because their values depend on the performance of the underlying non-U.S. securities. However, currency fluctuations will impact investments in depositary receipts differently than direct investments in non-U.S. dollar-denominated non-U.S. securities because a depositary receipt will not appreciate in value solely as a result of appreciation in the currency in which the underlying non-U.S. dollar security is denominated. The Fund may invest in depositary receipts through an unsponsored facility where the depositary issues the depositary receipts without an agreement with the company that issues the underlying securities. As a result, available information concerning the issuer may not be as current as for sponsored depositary receipts, and the prices of unsponsored depositary receipts may be more volatile than if such instruments were sponsored by the issuer.

•REIT Risk. Adverse changes in general economic and local market conditions, supply or demand for similar or competing properties, taxes, governmental regulations or interest rates, as well as the risks associated with improving and operating property, may decrease the value of REITs in which the Fund may invest. In addition, to the extent the Fund holds interests in REITs, it is expected that investors in the Fund will bear two layers of asset-based management fees and expenses (directly at the Fund level and indirectly at the REIT level). Additionally, there is always a risk that a REIT will fail to qualify for favorable tax treatment.

•Cybersecurity Risk. With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund’s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs.

Performance. When the Fund has been in operation for a full calendar year, performance will be shown in the Prospectus and will give some indication of the risks of investing in the Fund by comparing the Fund’s performance with a broad measure of market performance. Updated performance information will be available on the Fund’s website at https://columnfunds.com/ or by calling the Fund toll-free at 866-950-4644.

Sub-Advisers and Portfolio Managers. The Adviser allocates Fund assets among the following sub-advisers. Each sub-adviser’s portfolio managers are primarily responsible for the day-to-day management of the portion of the Fund’s portfolio that is allocated to the sub-adviser. For sub-advisers that have a group of portfolio managers, such portfolio managers are jointly and primarily responsible for such day-to-day management.


Portfolio Manager	Primary Title	Years of Service with the Fund
Kevin Toney, CFA	Chief Investment Officer – Global Value Equity, Senior Vice President and Senior Portfolio Manager	Since Inception
Michael Liss, CFA, CPA	Vice President and Senior Portfolio Manager	Since Inception
Brian Woglom, CFA	Vice President and Senior Portfolio Manager	Since Inception
Nathan Rawlins, CFA	Portfolio Manager and Senior Investment Analyst	Since Inception


Portfolio Manager	Primary Title	Years of Service with the Fund
Daniel Ong, CFA	Senior Portfolio Manager	Since Inception
Eduardo Repetto, PhD	Chief Investment Officer	Since Inception
Mitchell Firestein	Senior Portfolio Manager	Since Inception
Ted Randall	Senior Portfolio Manager	Since Inception

Purchase and Sale of Fund Shares. Shares of the Fund are available only to investors participating in certain advisory programs sponsored by NMWMC. NMWMC advisory program investors may purchase and sell (redeem) shares of the Fund only through NMWMC. There is no minimum amount for investment in the Fund.

Tax Information. The Fund’s distributions will be taxed as ordinary income or long-term capital gain, unless you are investing through a tax-deferred or other tax-advantaged arrangement, such as a 401(k) plan or an IRA. You may be taxed later upon withdrawal of monies from tax-deferred arrangements.

NMWMC’s advisory programs purchase and redeem shares of the Fund through a financial intermediary, and the Column Funds and/or their related companies may pay the financial intermediary for the sale of Fund shares and related services. These payments may create conflicts of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your financial adviser or visit your financial intermediary’s website for more information.


One Year			Three Years
$50			$197


			Summary Prospectus October 31, 2023 Column Mid Cap Fund (CFMCX) https://columnfunds.com/