The Company has entered into various research, development, license and supply agreements with Serum Institute of India (“Serum Institute”), PJSC Pharmsynthez (“Pharmsynthez”) and SynBio LLC (“SynBio”), a wholly owned subsidiary of Pharmsynthez. The Company’s collaborative partners continue to engage in research and development activities with no resultant commercial products through September 30, 2022. No amounts were recognized as revenue related to the Serum Institute, Pharmsynthez or SynBio agreements during the three and nine months ended September 30, 2022 and 2021, respectively.

In October 2017, the Company granted to Takeda Pharmaceuticals Co. Ltd. (“Takeda”) the right to grant a non-exclusive sublicense to certain patents related to the Company’s PolyXen technology that were previously exclusively licensed to Takeda in connection with products related to the treatment of blood and bleeding disorders. Royalty payments of approximately $0.4 million and $1.2 million were recorded as revenue by the Company during the three and nine months ended September 30, 2022, respectively, and approximately $0.3 million and $0.8 million were recorded as revenue by the Company during the three and nine months ended September 30, 2021, respectively. These payments are based on single digit royalties on net sales of certain covered products. The Company’s policy is to recognize royalty payments as revenue when they are reliably measurable, which is upon receipt of reports from Takeda. The Company receives these reports in the quarter subsequent to the actual sublicensee sales. At the time the revenue was received, there were no remaining performance obligations and all other revenue recognition criteria were met.

On May 15, 2020, the Company and The Scripps Research Institute (“Scripps Research”) entered into a Research Funding and Option Agreement (the “Scripps Agreement”), pursuant to which the Company had agreed to provide Scripps Research an aggregate of up to $3.0 million to fund research relating to advancing the pre-clinical development of XCART. The research funding was payable by the Company to Scripps Research on a quarterly basis in accordance with a negotiated budget, which provided for an initial payment of approximately $300,000 on the date of the Scripps Agreement and subsequent quarterly payments of approximately $300,000 over a 27-month period. Under the Scripps Agreement, Scripps Research has granted the Company a license within the Field (as defined in the Scripps Agreement) to any Patent Rights or Technology (as defined in the Scripps Agreement) under the terms of that certain license agreement with Scripps Research, dated February 25, 2019, assigned to the Company on March 1, 2019. Additionally, the Company has the option to acquire a worldwide exclusive license to Scripps Research’s rights in the Technology or Patent Rights not already licensed to the Company, as well as a non-exclusive, royalty-free, non-transferrable license to make and use Scripps Research Technology (as defined in the Scripps Agreement) solely for the Company’s internal research purposes during the performance of the research program contemplated by the Scripps Agreement. During the second quarter of 2022, the parties mutually agreed to terminate additional funding under the Scripps Agreement. As a result, Scripps Research agreed to continue to perform work under the agreement until funding previously advanced was expended. The Company paid $2.4 million to Scripps Research under this agreement through September 30, 2022. There were no amounts recognized as an advance payment under this agreement or accrued as of September 30, 2022. As of December 31, 2021, approximately $0.2 million has been recognized as an advance payment under this agreement and is included in prepaid expenses and other current assets.

On June 30, 2022, the Company entered into a Statement of Work (the “SOW”) with Catalent Pharma Solutions, LLC (“Catalent”) to outline the general scope of work, timeline, and pricing pursuant to which Catalent will provide certain services to the Company to perform cGMP manufacturing of the Company’s recombinant protein, Human DNase I. The parties agreed to enter into a Master Services Agreement (“MSA”) that will contain terms and conditions to govern the project contemplated by the SOW and that will supersede the addendum to the SOW containing Catalent's standard terms and conditions. In addition, in the event of any conflict between the project-specific terms and conditions set forth in the SOW and the MSA, the MSA terms and conditions shall govern. The estimated total cost of the project contemplated by the SOW is expected to be up to approximately $5 million (exclusive of certain fees and potential alternatives) for the manufacturing services over the course of the term of the project with each phase of the project invoiced separately in connection with the commencement of such phase. Unless earlier terminated, the manufacturing services contemplated by the SOW are currently expected to take approximately 17 months from the start date. The SOW is terminable by the Company at any time with 30 days' prior written notice to Catalent. The SOW also contains customary provisions related to, among other things, confidentiality, warranties, intellectual property and indemnification. During the three and nine months ended September 30, 2022, the Company paid Catalent $0.3 million, which has been recorded as a long-term prepayment as of September 30, 2022.