Note 9 - Related party transactions |
6 Months Ended |
|---|---|
Jun. 30, 2024 | |
| Related Party Transactions [Abstract] | |
| Related party transactions |
9.
Related party transactions:
Hanmi Pharmaceutical Co. Ltd. On November 4, 2021, Aptose entered a licensing agreement (the "Hanmi Licensing Agreement") with the South Korean company Hanmi Pharmaceutical Co. Ltd. ("Hanmi") for the clinical and commercial development of tuspetinib. Under the terms of the Hanmi Licensing Agreement, Hanmi granted Aptose exclusive worldwide rights to tuspetinib for all indications. Hanmi received an upfront payment of $12.5 million, including $5 million in cash and $7.5 million in Common Shares. Aptose issued Hanmi 215,703 Common Shares under this upfront licensing payment. Hanmi will also receive up to $407.5 million in future milestone payments contingent upon achieving certain clinical, regulatory and sales milestones across several potential indications, as well as tiered royalties on net sales. The Hanmi milestone payments are based on the progression of research as outlined in Note 14, Collaborative Agreements, to the Annual report on Form 10-K for the year ended December 31, 2023. The term of the agreement will continue on a product-by-product and country-by-country basis until the expiration of the royalty period for such product in such country. The licenses to Aptose pursuant to the Hanmi Licensing Agreement will survive and become non-exclusive, perpetual, irrevocable and fully paid-up on a product-by-product and country-by-country basis, upon their natural expiration under the terms of the Hanmi Licensing Agreement.
In 2022, the Company and Hanmi also entered into a separate supply agreement for additional production of new drug substance ("API") and drug product to support further tuspetinib clinical development, for which the Company pays Hanmi per batch of production. Expenses related to this supply agreement have been recognized by the Company, amounting to nil and $1.5 million for the six months ended June 30, 2024 and 2023, respectively. Since inception to June 30, 2024, $7.1 million has been recognized for the period under the supply agreement. The Company paid supply costs to Hanmi of $2.6 million and $3.1 million in the six months ended June 30, 2024 and 2023, respectively. Since inception to June 30, 2024, payments of $7.1 million have been made under the supply agreement. At June 30, 2024, the Company did not have either accounts payable or accrued liabilities related to the Hanmi supply agreement. At December 31, 2023, there was $2.6 million in accounts payable and nil in accrued liabilities. See Note 10, Share capital, for share capital transactions with Hanmi. |