Immuron (ASX:IMC) lodged an at-the-market supplementary prospectus with the United States Securities and Exchange Commission, extending the at-the-market funding facility with H.C. Wainwright to an additional aggregate offering price of around $2.8 million, according to a Monday Australian bourse filing.

Immuron will control major aspects of the funding, having sole discretion as to whether the firm uses the at-the-market facility, the number of American depository shares issued, as well as the minimum issue price of the American depository shares.