Oberweis Asset Management INSTITUTIONAL INVESTOR OBCHX INVESTOR CLASS OVERVIEW PERFORMANCE FUND HOLDINGS FUND OBJECTIVE Seeks capital appreciation through investment in companies poised to benefit from growth in Greater China. INVESTMENT STRATEGY The China Opportunities Fund, under normal circumstances, invests at least 80% of its net assets in China securities, as defined in the Fund prospectus. There are no restrictions on the capitalization of companies whose securities the Fund may buy; however, the Fund generally invests in the stocks of small to mid-size companies. MANAGEMENT TEAM James W. Oberweis, CFA Barry Wang, CFA Adnan Bokhari Nick Curry, CFA SUMMARY PROSPECTUS LITERATURE THIRD QUARTER 2021 COMMENTARY THIRD QUARTER 2021 FACT SHEET FUND BASICS TICKER CUSIP CATEGORY INCEPTION BENCHMARK OBCHX 674375407 Investor Class 10/1/05 MSCI China Net Index SALES CHARGE EXPENSE RATIO REDEMPTION FEE MINIMUM INVESTMENT The Oberweis China Opportunities is a no-load fund 1.95% for the year ended December 31, 2020 2% redemption fee on shares held three months or less $1,000 non-IRA, $500 IRA The gross expense ratio of expense off set arrangements and expense reimbursements was 1.95% and 1.69% for OBCHX and OCHIX, respectively. Oberweis Asset Management, Inc. (OAM), the Fund’s investment advisor is contractually obligated through April 30, 2022 to reduce its management fees or reimburse OBCHX to the extent that total ordinary operating expenses exceed in any one year 2.24% expressed as a percentage of the Fund’s average daily net assets and for OCHIX 1.99%. OUR PROCESS PROCESS Our process rests on our firmwide commitment to uncovering and capitalizing on the persistent and recurring stock pricing inefficiencies in global equities caused by a lag in investor response to new information. This lag in recognizing the catalysts likely to positively impact future earnings growth drives the security selection across all our strategies and mutual funds. The criteria used within each product, however, can differ. This is how our investment team implements our philosophy in the China Opportunities fund. PRICING (AS OF 12/2/21) OBCHX DAILY NAV 16.75 DAY CHANGE 0.10 YTD RETURN -3.12% NET ASSETS (MILLIONS) 84.78 See pricing for all funds AVERAGE ANNUAL TOTAL RETURNS (PERIODS ENDED 9/30/21) 11.6811.68 16.1416.14 15.3815.38 13.313.3 0 2 4 6 8 10 12 14 16 18 1 Year 5 Years 10 Years Since Inception 10/1/05 Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value will fluctuate, so that you may have a gain or loss when shares are sold. Current performance may be higher or lower than quoted. Before investing, consider the Fund’s investment objectives, risks, charges, and expenses. To obtain a copy of the prospectus or summary prospectus containing this and other information, call 800-323-6166. Read it carefully before investing. The Oberweis Funds invest in rapidly growing smaller and medium-sized companies that may offer greater return potential. However, these investments often involve greater risks and volatility. Foreign investments involve greater risks than U.S. investments, including political and economic risks and the risk of currency fluctuations. There is no guarantee that the Funds can achieve their objectives. The Oberweis Funds are distributed by Oberweis Securities, Inc. Member: FINRA and SIPC. GROWTH OF $10,000 INVESTMENT (10/1/05 – 9/30/21) USD Value Oberweis China Opportunities Fund MSCI China Net Index 10/1/05 1/31/06 5/31/06 9/30/06 1/31/07 5/31/07 9/30/07 1/31/08 5/31/08 9/30/08 1/31/09 5/31/09 9/30/09 1/31/10 5/31/10 12/31/10 1/31/11 5/31/11 9/30/11 1/31/12 5/31/12 9/30/12 1/31/13 5/31/13 9/30/13 1/31/14 5/31/14 9/30/14 1/31/15 5/31/15 9/30/15 1/31/16 5/31/16 9/30/16 1/31/17 5/31/2017 9/30/17 1/31/18 5/31/2018 9/30/18 1/31/19 5/31/2019 9/30/19 1/31/20 5/31/2020 9/30/20 1/31/21 5/31/2021 9/30/21 $0 $20,000 $40,000 $60,000 $80,000 $100,000 The MSCI China Net Index is a free float-adjusted market capitalization-weighted Index of Chinese equities that include China-affiliated corporations and H shares listed on the Hong Kong Exchange, and B shares listed on the Shanghai and Shenzhen exchanges and P chips and foreign listings with minimum dividends reinvested net of withholding tax. Institutional Class shares OCHIX performance information was calculated using the historical performance of Investor Class shares for periods prior to May 1, 2017. Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value will fluctuate, so that you may have gain or loss when shares are sold. Current performance may be higher or lower than quoted. Visit us online at oberweisfunds.com for most recent month-end performance. SECTOR ALLOCATION (AS OF 9/30/21) Energy 2.0% Materials & Processing 18.2% Industrials 17.4% Consumer Discretionary 10.7% Consumer Staples 4.5% Healthcare 8.8% Financials 4.2% Information Technology 19.5% Telecomm Services 2.0% Utilities 7.7% Real Estate 4.9% Cash 0.1% TOP 10 HOLDINGS (AS OF 9/30/21) LiNing 3.6% China Longyuan Power Group 2.5% Luzhou Laojiao Co., Ltd. 2.0% Gangenf Lithium 1.9% Jiangsu Shuangxing Color Plastic New Mater 1.9% China Resources Power Holdings 1.8% Conch Cement 1.8% China Suntien Green Energy 1.7% Zhejiang Jingsheng Mechanical & Electrical 1.7% eMemory Technology Inc. 1.7% TOTAL 20.6% Source: Eikon - Sector data based on MSCI’s revised Global Industry Classification Standards. For more details, visit www.msci.com. Top 10 Holdings and Sector Weightings as a % of Total Net Assets excluding cash. The Oberweis Funds releases the top 10 holdings as of the most recent quarter-end after a 60-day lag. A complete list of holdings can be obtained by contacting a shareholder services representative after the aforementioned 60-day delay periods. The Oberweis Funds invest primarily in small-cap companies, which may have volatile price movements. Continuous publication of the Funds’ current holdings has the potential to affect trading volume and the prices of the securities in which the Funds invest. By delaying the release of the holdings, Oberweis may be able to deter front running by traders who could impair our ability to build positions in our best ideas at the best prices. Portfolio holdings are subject to change at any time. References to specific securities should not be construed as a recommendation to buy or sell and should not be assumed profitable. INVEST NOW Contact Us ©2021 Oberweis Asset Management Privacy Legal Terms of Use DISCLOSURE: Before investing, consider the Fund’s investment objectives, risks, charges, and expenses. To obtain a copy of the prospectus or summary prospectus containing this and other information, call 800-323-6166. Read it carefully before investing. The Oberweis Funds invest in rapidly growing smaller and medium-sized companies that may offer greater return potential. However, these investments often involve greater risks and volatility. Foreign investments involve greater risks than U.S. investments, including political and economic risks and the risk of currency fluctuations. There is no guarantee that the Funds can achieve their objectives. The products described on this website are intended to be made available only to persons residing in the United States. Performance of our products is historical and does not guarantee future results. This website should not be considered a solicitation or an offering of any of the Oberweis Asset Management, Inc. ("OAM") products to investors residing outside of the United States. Please review the Terms and Conditions for using this website as well as our Privacy Notice. The Oberweis Funds are distributed by Oberweis Securities, Inc. Member: FINRA and SIPC.