Licensing arrangements	12 Months Ended
Dec. 31, 2022
Licensing arrangements
Licensing arrangements	9. Licensing arrangements The Company has entered into various license agreements to further discover, develop and commercialize certain technologies and treatments. The Company may need to pay developmental and regulatory milestone payments of up to approximately $2.6 million. In addition, the Company may need to pay royalty rates on net product sales, a portion of certain sublicense and collaboration payments, and certain commercial milestone payments of up to approximately $1.5 million, if any. The Company recorded $0.1 million in development and regulatory milestone payments during the year ended December 31, 2022 in research and development expenses in the statements of operations. There were no development and regulatory milestone payments during the year ended December 31, 2021. 2022 Amendment to Exclusive License Agreement In December 2022, the Company and Arrayjet Limited, or Arrayjet, amended the Exclusive License Agreement, effective as of June 28, 2019 and amended July 10, 2020. The agreement was amended, among other things, to increase the recurring exclusivity annual fee and make certain adjustments to the termination rights. 2021 Patent License Agreement In June 2021, the Company entered into an exclusive worldwide patent license agreement with several Philadelphia based universities and hospitals (the Licensors) to further discover, develop and commercialize human antibodies, identified using Immunome’s human hybridoma technology, for the treatment of diseases associated with the formation of bacterial biofilms. The Licensors are eligible to receive up to $2.2 million in the aggregate for certain regulatory, developmental, and commercial milestone payments. In addition, the Licensors are eligible to receive low single digit royalty rates for net product sales, which are subject to adjustment in the event the Company sublicenses the approved technology. The Company recorded $0.1 million in initiation and minimum annual payments related to this agreement for each of the years ended December 31, 2022 and 2021, respectively, in research and development expenses in the statement of operations.

Licensing arrangements

12 Months Ended

Dec. 31, 2022

9. Licensing arrangements

The Company has entered into various license agreements to further discover, develop and commercialize certain technologies and treatments. The Company may need to pay developmental and regulatory milestone payments of up to approximately $2.6 million. In addition, the Company may need to pay royalty rates on net product sales, a portion of certain sublicense and collaboration payments, and certain commercial milestone payments of up to approximately $1.5 million, if any.

The Company recorded $0.1 million in development and regulatory milestone payments during the year ended December 31, 2022 in research and development expenses in the statements of operations. There were no development and regulatory milestone payments during the year ended December 31, 2021.

2022 Amendment to Exclusive License Agreement

In December 2022, the Company and Arrayjet Limited, or Arrayjet, amended the Exclusive License Agreement, effective as of June 28, 2019 and amended July 10, 2020. The agreement was amended, among other things, to increase the recurring exclusivity annual fee and make certain adjustments to the termination rights.

2021 Patent License Agreement

In June 2021, the Company entered into an exclusive worldwide patent license agreement with several Philadelphia based universities and hospitals (the Licensors) to further discover, develop and commercialize human antibodies, identified using Immunome’s human hybridoma technology, for the treatment of diseases associated with the formation of bacterial biofilms. The Licensors are eligible to receive up to $2.2 million in the aggregate for certain regulatory, developmental, and commercial milestone payments. In addition, the Licensors are eligible to receive low single digit royalty rates for net product sales, which are subject to adjustment in the event the Company sublicenses the approved technology.

The Company recorded $0.1 million in initiation and minimum annual payments related to this agreement for each of the years ended December 31, 2022 and 2021, respectively, in research and development expenses in the statement of operations.