Schedule 13D Filing by BroadOak Entities and William Snider

This filing details the beneficial ownership of HARVARD BIOSCIENCE INC (HBIO) common stock by BroadOak Income Fund, L.P., BroadOak Fund VI, L.P., BroadOak Capital Partners, LLC, and William Snider. These entities, collectively referred to as the Reporting Persons, acquired their shares in connection with a Loan Agreement entered into on December 17, 2025. The agreement involves multiple term loans totaling $40 million, with the proceeds used to repay existing debt, cover transaction fees, and for general corporate purposes. William Snider, a partner at BroadOak Capital Partners and manager of the BroadOak Funds, also serves as a director on the Issuer's board. The Reporting Persons collectively hold approximately 15.97% of the Issuer's outstanding common stock, with potential for increased or decreased ownership through various transactions. The filing also details the terms of the loans, including interest rates, repayment schedules, covenants, and the issuance of warrants. The Reporting Persons have entered into a joint filing agreement to coordinate their filings.