Oberweis Asset Management ABOUT US RESOURCES LOGIN Oberweis Securities, Inc. Your gateway to full-service investment assistance CONTACT US ONLINE ACCESS TO OBERWEIS FUNDS WEBSITE The Oberweis Funds are pleased to announce online account access and expanded customer service hours. Oberweis Funds Shareholders can log on to view their accounts and place transactions. Fund shareholders may now contact our service representatives from 7 a.m. to 7 p.m. CST, Monday through Friday, at 800-245-7311. QUICK LINKS Oberweis Asset Management Oberweis Funds Shareholders Check the background of this firm on FINRA’s Broker Check Oberweis Securities, Inc. 3333 Warrenville Road, Suite 500 Lisle, IL 60532 Institutional Services 800-323-6166 ©2021 "Oberweis" and the "O" design are trademarks of Oberweis Asset Management, Inc. All rights reserved. Privacy Legal Terms of Use DISCLOSURE: Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-323-6166. Read it carefully before investing. The Oberweis Funds are distributed by Oberweis Securities, Inc. Member FINRA & SIPC

Oberweis Asset Management ABOUT US RESOURCES LOGIN CONTACT US ABOUT US OVERVIEW AFFILIATED COMPANIES INVESTMENT PROCESS OVERVIEW Oberweis Securities, Inc. (OSI) is a full-service broker-dealer offering a diversified and comprehensive array of quality products and services that can meet our clients’ individual objectives for the future. At OSI, we help individual investors manage the complexities of establishing and pursuing essential financial goals. Providing clients with high-quality, personalized investment advice has never been more valuable than in today’s ever-changing marketplace, so we offer our clients access to: Premier account asset management Full-service brokerage Online trading Oberweis Securities, Inc. 3333 Warrenville Road, Suite 500 Lisle, IL 60532 Institutional Services 800-323-6166 ©2021 "Oberweis" and the "O" design are trademarks of Oberweis Asset Management, Inc. All rights reserved. Privacy Legal Terms of Use DISCLOSURE: Before investing carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information or call 1-800-323-6166. Read it carefully before investing. The Oberweis Funds are distributed by Oberweis Securities, Inc. Member FINRA & SIPC