Exhibit (j)(1)

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form N-1A of our report dated February 26, 2026, relating to the financial statements and financial highlights of Oberweis Micro-Cap Fund, Oberweis Small-Cap Opportunities Fund, Oberweis Global Opportunities Fund, Oberweis China Opportunities Fund, Oberweis International Opportunities Fund, and Oberweis Focused International Growth Fund, each a series of The Oberweis Funds, which are included in Form N-CSR for the year ended December 31, 2025, and to the references to our firm under the headings “Financial Highlights” in the Prospectus and “Additional Information” in the Statement of Additional Information.

/s/ Cohen & Company, Ltd.

COHEN & COMPANY, LTD.

Philadelphia, Pennsylvania

April 29, 2026