Strategic License Agreements	6 Months Ended
Jun. 30, 2024
License Agreements Disclosure [Abstract]
Strategic License Agreements	7. Strategic License Agreements Anti-VISTA Antibody Program In-License Agreement In August 2020, Kineta entered into an Option and License Agreement with GigaGen, Inc. (“GigaGen”), which was amended in November 2020 and further amended in May 2023 (such agreement, as amended, the “VISTA Agreement”) to in-license certain intellectual property and antibodies for the VISTA/KVA12123 drug program. Pursuant to the terms of the VISTA Agreement, GigaGen granted Kineta an exclusive (even as to GigaGen) world-wide license, with the right to grant sublicenses to research, develop, make, have made, use, have used, offer for sale, sell, have sold, distribute, import, have imported, export and have exported and otherwise exploit the licensed antibodies and licensed products. License expenses for the VISTA Agreement were zero for the three and six months ended June 30, 2024 and zero for the three and six months ended June 30, 2023. Under the VISTA Agreement, GigaGen is eligible to receive approximately $20.4 million in development and regulatory milestone payments and up to $11.0 million in sales milestone payments. In addition, GigaGen is eligible to receive low single-digit royalty percentages based on net sales. Kineta is responsible (with input from GigaGen) for the preparation, filing, prosecution and maintenance of all patents and patent applications, and all associated costs. The VISTA Agreement shall remain in effect on a licensed product-by-licensed product and country-by-country basis, until the expiration of the royalty term for a licensed product in a country, which, based on the expiration of the last-to-expire valid claim of the two current patent applications (without any patent term adjustment or extensions) would be February 2042 and March 2044, respectively. Kineta may terminate the VISTA Agreement with 30 days’ written notice to GigaGen. Either party has the right to terminate the VISTA Agreement upon a material breach of the other party that is not cured within 90 days after the breaching party receives written notice of such breach from the non-breaching party. Anti-CD27 Agonist Antibody Program In-License Agreement In June 2021, Kineta entered into an Option and License Agreement with GigaGen, as amended in July 2022, December 2022, May 2023 and December 2023 (such agreement, as amended, the “CD27 Agreement”) to in-license certain intellectual property rights and antibodies for the CD27 drug program. Pursuant to the terms of the CD27 Agreement, GigaGen granted Kineta an exclusive (even as to GigaGen) world-wide license, with the right to grant sublicenses to research, develop, make, have made, use, have used, offer for sale, sell, have sold, distribute, import, have imported, export and have exported and otherwise exploit the licensed antibodies and licensed products. License expenses for the CD27 Agreement were zero for the three months ended June 30, 2024 and $430,000 for the six months ended June 30, 2024. License expenses for the CD27 Agreement were zero for the three and six months ended June 30, 2023. Under the CD27 Agreement, GigaGen is eligible to receive approximately $20.4 million in development and regulatory milestone payments and up to $11.0 million in sales milestone payments. In addition, GigaGen is eligible to receive low single-digit royalty percentages based on net sales. Kineta is responsible (with input from GigaGen) for the preparation, filing, prosecution and maintenance of all patents and patent applications, and all associated costs. The CD27 Agreement shall remain in effect on a licensed product-by-licensed product and country-by-country basis, until the expiration of the royalty term for a licensed product in a country, which, based on the expiration of the last-to-expire valid claim of the current provisional patent application (without any patent term adjustment or extensions) would be September 2044. Kineta may terminate the CD27 Agreement with 30 days’ written notice to GigaGen. Either party has the right to terminate the CD27 Agreement upon a material breach of the other party that is not cured within 90 days after the breaching party receives written notice of such breach from the non-breaching party. Merck Neuromuscular License Agreement In connection with the Merger, the Company became the successor in interest to the Merck Neuromuscular License Agreement with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis. In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. The Company recognized licensing revenues of zero for the three and six months ended June 30, 2024 and $5.0 million for the three and six months ended June 30, 2023 under the Merck Neuromuscular License Agreement and has no further obligations under the Merck Neuromuscular License Agreement.

Strategic License Agreements

6 Months Ended

Jun. 30, 2024

License Agreements Disclosure [Abstract]

Anti-VISTA Antibody Program In-License Agreement

In August 2020, Kineta entered into an Option and License Agreement with GigaGen, Inc. (“GigaGen”), which was amended in November 2020 and further amended in May 2023 (such agreement, as amended, the “VISTA Agreement”) to in-license certain intellectual property and antibodies for the VISTA/KVA12123 drug program. Pursuant to the terms of the VISTA Agreement, GigaGen granted Kineta an exclusive (even as to GigaGen) world-wide license, with the right to grant sublicenses to research, develop, make, have made, use, have used, offer for sale, sell, have sold, distribute, import, have imported, export and have exported and otherwise exploit the licensed antibodies and licensed products. License expenses for the VISTA Agreement were zero for the three and six months ended June 30, 2024 and zero for the three and six months ended June 30, 2023.

Under the VISTA Agreement, GigaGen is eligible to receive approximately $20.4 million in development and regulatory milestone payments and up to $11.0 million in sales milestone payments. In addition, GigaGen is eligible to receive low single-digit royalty percentages based on net sales. Kineta is responsible (with input from GigaGen) for the preparation, filing, prosecution and maintenance of all patents and patent applications, and all associated costs.

The VISTA Agreement shall remain in effect on a licensed product-by-licensed product and country-by-country basis, until the expiration of the royalty term for a licensed product in a country, which, based on the expiration of the last-to-expire valid claim of the two current patent applications (without any patent term adjustment or extensions) would be February 2042 and March 2044, respectively. Kineta may terminate the VISTA Agreement with 30 days’ written notice to GigaGen. Either party has the right to terminate the VISTA Agreement upon a material breach of the other party that is not cured within 90 days after the breaching party receives written notice of such breach from the non-breaching party.

Anti-CD27 Agonist Antibody Program In-License Agreement

In June 2021, Kineta entered into an Option and License Agreement with GigaGen, as amended in July 2022, December 2022, May 2023 and December 2023 (such agreement, as amended, the “CD27 Agreement”) to in-license certain intellectual property rights and antibodies for the CD27 drug program. Pursuant to the terms of the CD27 Agreement, GigaGen granted Kineta an exclusive (even as to GigaGen) world-wide license, with the right to grant sublicenses to research, develop, make, have made, use, have used, offer for sale, sell, have sold, distribute, import, have imported, export and have exported and otherwise exploit the licensed antibodies and licensed products. License expenses for the CD27 Agreement were zero for the three months ended June 30, 2024 and $430,000 for the six months ended June 30, 2024. License expenses for the CD27 Agreement were zero for the three and six months ended June 30, 2023.

Under the CD27 Agreement, GigaGen is eligible to receive approximately $20.4 million in development and regulatory milestone payments and up to $11.0 million in sales milestone payments. In addition, GigaGen is eligible to receive low single-digit royalty percentages based on net sales. Kineta is responsible (with input from GigaGen) for the preparation, filing, prosecution and maintenance of all patents and patent applications, and all associated costs.

The CD27 Agreement shall remain in effect on a licensed product-by-licensed product and country-by-country basis, until the expiration of the royalty term for a licensed product in a country, which, based on the expiration of the last-to-expire valid claim of the current provisional patent application (without any patent term adjustment or extensions) would be September 2044. Kineta may terminate the CD27 Agreement with 30 days’

written notice to GigaGen. Either party has the right to terminate the CD27 Agreement upon a material breach of the other party that is not cured within 90 days after the breaching party receives written notice of such breach from the non-breaching party.

Merck Neuromuscular License Agreement

In connection with the Merger, the Company became the successor in interest to the Merck Neuromuscular License Agreement with Merck to support research, development and commercialization of products for treatment of neuromuscular diseases, including amyotrophic lateral sclerosis. In June 2023, the Company achieved a development milestone pursuant to the Merck Neuromuscular License Agreement, which triggered a $5.0 million payment. Merck will continue to advance the research program for the ALS pipeline, one of the two pipeline programs licensed under the Merck Neuromuscular License Agreement. Following this milestone, Merck will assume sole responsibility for all future development and commercialization for the ALS program. The Company recognized licensing revenues of zero for the three and six months ended June 30, 2024 and $5.0 million for the three and six months ended June 30, 2023 under the Merck Neuromuscular License Agreement and has no further obligations under the Merck Neuromuscular License Agreement.