The information in this prospectus is not complete and may be changed. We may not sell
these securities until the Registration Statement filed with the Securities and Exchange Commission, of which this prospectus is a part, is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy
these securities in any state where the offer or sale is not permitted.
PROSPECTUS
Up to
$11,500,000
American Depositary Shares
We have entered into a Controlled EquitySM Sales Agreement, or the Sales Agreement, with
Cantor Fitzgerald & Co., or Cantor Fitzgerald, dated May 5, 2023, relating to the American Depositary Shares, or ADSs, offered by this prospectus. Each ADS represents one hundred eighty (180) of our ordinary shares, no par value.
Under this prospectus, we may offer and sell ADSs having an aggregate offering price of up to $11.5 million from time to time through Cantor Fitzgerald, acting as sales agent, in accordance with the Sales Agreement.
Sales of the ADSs, if any, under this prospectus may be made by any method permitted that is deemed an at the market offering as
defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended, or the Securities Act. Cantor Fitzgerald may sell our ADSs by any method permitted by law deemed to be an at-the-market offering as defined in Rule 415(a)(4) promulgated under the Securities Act. Cantor Fitzgerald is not required to sell any specific number or dollar amount of securities but will act as our sales
agent using commercially reasonable efforts consistent with their normal trading and sales practices and applicable state and federal laws, rules and regulations and the rules of the Nasdaq, on mutually agreed terms between the Cantor Fitzgerald and
us. There are no minimum sale requirements, and there is no arrangement for funds to be received in any escrow, trust or similar arrangement.
As of May 2, 2023, the aggregate market value of our outstanding ordinary shares held by
non-affiliates, or public float, was approximately $35.2 million (A$51.9 million) based on 1,468,735,424 ordinary shares outstanding (including ordinary shares represented by ADSs), of which approximately
1,206,998,787 ordinary shares (including ordinary shares represented by ADSs) are held by non-affiliates, based on a closing price of $0.03 (A$0.04) per ordinary share on March 9, 2023, which was the
highest closing sale price of our ADSs on the Australian Securities Exchange, or the ASX, the principal market for our common equity, within 60 days of the filing date of this registration statement. We have not offered any securities pursuant to
General Instruction I.B.5 of Form F-3 during the prior 12 calendar month period that ends on and includes the date of this prospectus. Pursuant to General Instruction I.B.5 of Form F-3, in no event will we sell securities registered on this registration statement in a public primary offering with a value exceeding more than one-third of our public float
in any 12-month period so long as our public float remains below $75.0 million.
Cantor
Fitzgerald will be entitled to a commission of 3.0% of the gross sales price per ADS sold under the Sales Agreement. See Plan of Distribution beginning on page S-41 for additional information regarding the compensation to be paid
to Cantor Fitzgerald. In connection with the sale of the ADSs on our behalf, Cantor Fitzgerald will be deemed to be an underwriter within the meaning of the Securities Act, and the compensation paid to Cantor Fitzgerald will be deemed to
be underwriting compensation. We have also agreed in the Sales Agreement to provide indemnification and contribution to Cantor Fitzgerald with respect to certain liabilities, including liabilities under the Securities Act.
The ADSs are listed on the Nasdaq under the symbol BNOX. Our ordinary shares are listed on the ASX under the symbol BNO.
On May 3, 2023, the last reported sale price of the ADSs on the Nasdaq was $2.20 per ADS and the last reported price of our ordinary shares was A$0.02.
INVESTING IN OUR ADSS INVOLVES A HIGH DEGREE OF RISK. BEFORE MAKING AN INVESTMENT DECISION, PLEASE READ THE INFORMATION UNDER THE HEADING
RISK FACTORS BEGINNING ON PAGE S-10 OF THIS PROSPECTUS, AND IN THE DOCUMENTS INCORPORATED BY REFERENCE INTO THIS PROSPECTUS.
Neither the Securities and Exchange Commission, any state securities commission, the Australian Securities and Investments Commission, nor
any other foreign securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.
This prospectus is dated
, 2023.