Morningstar® Investment Profile™   Morningstar® Disclosure   Format for Print Wanger Acorn  WUSAX Release date as of 2024-03-31. Data on page is subject to change. Snapshot Ratings & Risk Portfolio Nuts & Bolts

Morningstar Report Overall Morningstar Rating™ What is this? As of 2024-03-31 Out of 520 Mid-Cap Growth Funds Morningstar® Style Box™ What is this? As of 2024-02-29 Total Fund Assets ($ Mil) 557.72 View Historical Morningstar Star Ratings and Definitions

Investment Objective & Strategy   The investment seeks long-term capital appreciation. Under normal circumstances, the fund invests a majority of its net assets in the common stock of small- and mid-sized companies with market capitalizations generally in the range of market capitalizations in the Russell 2500 Growth Index, the fund's benchmark, at the time of purchase.

Morningstar Category: Mid-Cap Growth Some mid-cap growth portfolios invest in stocks of all sizes, thus leading to a mid-cap profile, but others focus on midsize companies. Mid-cap growth portfolios target U.S. firms that are projected to grow faster than other mid-cap stocks, therefore commanding relatively higher prices. Stocks in the middle 20% of the capitalization of the U.S. equity market are defined as mid-cap. Growth is defined based on fast growth (high growth rates for earnings, sales, book value, and cash flow) and high valuations (high price ratios and low dividend yields).

Investment Risks Mid Cap Funds: The securities of companies with market capitalizations below $10 billion may be more volatile and less liquid than the securities of larger companies.

Portfolio Profile Asset Allocation % of Net Assets U.S. Stocks 94.3 Non-U.S. Stocks 3.1 Bonds 0.0 Cash 2.5 Other 0.1 Data through 2024-02-29 Morningstar Equity Sectors % of Stocks Cyclical 28.07 Basic Materials 1.01 Consumer Cyclical 17.74 Financial Services 7.11 Real Estate 2.21 Sensitive 48.80 Communication Services 1.47 Energy 1.94 Industrials 23.09 Technology 22.30 Defensive 23.13 Consumer Defensive 3.24 Healthcare 19.89 Utilities 0.00 Data through 2024-02-29 Holding Status Total Number of Stock Holdings 99 Total Number of Bond Holdings 0 % of Net Assets in Top 10 Holdings 22.59 Turnover % (as of 2023-12-31) 65.00 30 Day SEC Yield % --- Top Holdings Sector P/E % of Net Assets Columbia Short-Term Cash --- --- 2.51 WillScot Mobile Mini Holdings Corp 27.51 2.47 Repligen Corp 248.54 2.33 Bio-Techne Corp 50.64 2.29 Ryan Specialty Holdings Inc Class A 106.73 2.27 SPX Technologies Inc 39.72 2.22 Colliers International Group Inc Shs Subord Voting --- 2.15 BJ's Wholesale Club Holdings Inc 19.50 2.14 Churchill Downs Inc 22.54 2.11 Five Below Inc 33.53 2.10 Data through 2024-02-29

Principal Risks    Emerging Markets, Foreign Securities, Loss of Money, Not FDIC Insured, Growth Investing, Active Management, Issuer, Market/Market Volatility, Industry and Sector Investing, Restricted/Illiquid Securities, Small Cap, Mid-Cap Show Risk Definitions

Other Information Inception Date: 1995-05-03 Portfolio Manager(s) Erika K Maschmeyer   (2021-04-15) Ms. Maschmeyer has been associated with the Investment Manager as an investment professional since 2016. Ms. Maschmeyer heads the Investment Manager's U.S. equity research efforts and has been a Vice President of the Trust since March 2020. Prior to joining Columbia WAM, Ms. Maschmeyer was a research analyst at Oak Ridge Investments where she was responsible for U.S. consumer discretionary/staples investments. Ms. Maschmeyer began her investment career in 2001 and earned a B.A. from Denison University and an M.B.A from the University of Chicago. Investment Advisor(s) Columbia Wanger Asset Management LLC Issuer Wanger Subadvisor(s) ---

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