Note 9 - License Agreements	3 Months Ended
Mar. 31, 2024
Notes to Financial Statements
License Agreement Disclosure [Text Block]	NOTE 9 LICENSE AGREEMENTS *BRIUMVI (Ublituximab)* In January 2012, we entered into an exclusive license agreement with LFB Biotechnologies, GTC Biotherapeutics and LFB/GTC LLC, all wholly-owned subsidiaries of LFB Group, relating to the development of ublituximab (the LFB License Agreement). Under the terms of the LFB License Agreement, we have acquired the exclusive worldwide rights (exclusive of France/Belgium) for the development and commercialization of ublituximab. As of March 31, 2024, we have incurred approximately $31.0 million in expense related to the achievement of certain milestones of the LFB License Agreement. LFB Group is eligible to receive royalty payments on net sales of ublituximab at a royalty rate that escalates from mid-single digits to high-single digits. The license will terminate on a country-by-country basis upon the expiration of the last licensed patent right or 15 years after the first commercial sale of a product in such country, unless the agreement is earlier terminated (i) by LFB if the Company challenges any of the licensed patent rights, (ii) by either party due to a breach of the agreement, or (iii) by either party in the event of the insolvency of the other party. During the three months ended March 31, 2024, the Company recorded $4.9 million related to the worldwide royalty due under the LFB License Agreement in cost of revenue based on sales of BRIUMVI in the U.S. and the EU, compared to $0.8 million during the three months ended March 31, 2023 related to the worldwide royalty due under the LFB License Agreement in cost of revenue based on U.S. sales of BRIUMVI. As of March 31, 2024, $4.9 million in royalties were payable under the LFB License Agreement. In November 2012, we entered into an exclusive (within the territory) sublicense agreement with Ildong Pharmaceutical Co. Ltd. (Ildong) relating to the development and commercialization of ublituximab in South Korea and Southeast Asia. Under the terms of the sublicense agreement, Ildong has been granted a royalty bearing, exclusive right, including the right to grant sublicenses, to develop and commercialize ublituximab in South Korea, Taiwan, Singapore, Indonesia, Malaysia, Thailand, Philippines, Vietnam, and Myanmar. An upfront payment of $2.0 million, which was received in December 2012, net of $0.3 million of income tax withholdings, is being recognized as license revenue on a straight-line basis over the life of the agreement, which is through the expiration of the last licensed patent right or 15 years after the first commercial sale of a product in such country, unless the agreement is earlier terminated, and represents the estimated period over which we will have certain ongoing responsibilities under the sublicense agreement. We recorded license revenue of approximately $38,000 for each of the three months ended March 31, 2024 and 2023. At March 31, 2024 and December 31, 2023, we have deferred revenue of approximately $0.3 million and $0.5 million, respectively, associated with this $2 million payment (approximately $0.2 million of which has been classified in current liabilities at March 31, 2024 and December 31, 2023). We may receive up to an additional $5.0 million in payments upon the achievement of pre-specified milestones. In addition, upon commercialization, Ildong will make royalty payments to us on net sales of ublituximab in the sublicense territory. In July 2023, the Company entered into the Commercialization Agreement with Neuraxpharm. The Company granted Neuraxpharm the exclusive right to commercialize BRIUMVI in territories outside the United States, Canada, and Mexico, which are retained by TG, and excluding certain Asian countries previously partnered. Under the terms of the Commercialization Agreement, the Company received a one-time, non-refundable payment of $140.0 million upon contract execution (please refer to Note 2 – Revenue). In March 2024, the Company received a $12.5 million milestone payment upon the first key market commercial launch in the EU. The Company is eligible to receive up to an additional $492.5 million in milestone-based payments on achievement of certain launch and commercial milestones. In addition, TG will receive tiered double-digit royalties on net product sales up to 30%. Royalty revenue of less than $0.1 million was recognized during the three months ended March 31, 2024. In the event of a change of control of the Company (as defined in the Commercialization Agreement), the Company retains an option to buy back all rights under the Commercialization Agreement for a period of two years thereafter. *Azer-cel* On January 7, 2024, the Company and its wholly-owned subsidiary, TG Cell Therapy, Inc., entered into the Precision License Agreement with Precision, pursuant to which Precision granted the Company certain exclusive and non-exclusive license rights to develop, manufacture, and commercialize Precision’s allogeneic CAR T therapy azercabtagene zapreleucel (azer-cel) for the treatment of autoimmune and other non-oncology diseases and conditions. Pursuant to the Precision License Agreement, the Company made an upfront payment to Precision of $7.5 million, consisting of (i) $5.25 million in cash and (ii) $2.25 million, as an equity investment, for the purchase of 2,920,816 shares of Precision’s common stock at a price of $0.77 per share. Within 12 months of the Precision License Agreement, the Company will make a deferred payment of $2.5 million to Precision, consisting of an equity investment in Precision’s common stock at a 100% premium to the 30-day volume-weighted average price (the 30-day VWAP) prior to purchase. Upon achievement of certain near-term clinical or time-based milestones, the Company will make a $7.5 million payment to Precision, a portion of which will also be an equity investment in Precision’s common stock at a 100% premium to the 30-day VWAP prior to purchase. Precision will be eligible to receive up to $293 million in additional milestone payments based on the achievement of certain clinical, regulatory, and commercial milestones. In addition, the Company is obligated to pay Precision high-single-digit to low-double-digit royalties on net sales of the licensed product on a country-by-country basis until the latest to occur of patent expiration, loss of regulatory exclusivity, and a period of ten years following the first commercial sale of the licensed product in such country. The Company has also agreed to make certain payments to Precision’s licensors during the term of the Precision License Agreement.

Note 9 - License Agreements

3 Months Ended

Mar. 31, 2024

License Agreement Disclosure [Text Block]

NOTE 9 LICENSE AGREEMENTS

BRIUMVI (Ublituximab)

In January 2012, we entered into an exclusive license agreement with LFB Biotechnologies, GTC Biotherapeutics and LFB/GTC LLC, all wholly-owned subsidiaries of LFB Group, relating to the development of ublituximab (the LFB License Agreement). Under the terms of the LFB License Agreement, we have acquired the exclusive worldwide rights (exclusive of France/Belgium) for the development and commercialization of ublituximab. As of March 31, 2024, we have incurred approximately $31.0 million in expense related to the achievement of certain milestones of the LFB License Agreement.

LFB Group is eligible to receive royalty payments on net sales of ublituximab at a royalty rate that escalates from mid-single digits to high-single digits. The license will terminate on a country-by-country basis upon the expiration of the last licensed patent right or 15 years after the first commercial sale of a product in such country, unless the agreement is earlier terminated (i) by LFB if the Company challenges any of the licensed patent rights, (ii) by either party due to a breach of the agreement, or (iii) by either party in the event of the insolvency of the other party. During the three months ended March 31, 2024, the Company recorded $4.9 million related to the worldwide royalty due under the LFB License Agreement in cost of revenue based on sales of BRIUMVI in the U.S. and the EU, compared to $0.8 million during the three months ended March 31, 2023 related to the worldwide royalty due under the LFB License Agreement in cost of revenue based on U.S. sales of BRIUMVI. As of March 31, 2024, $4.9 million in royalties were payable under the LFB License Agreement.

In November 2012, we entered into an exclusive (within the territory) sublicense agreement with Ildong Pharmaceutical Co. Ltd. (Ildong) relating to the development and commercialization of ublituximab in South Korea and Southeast Asia. Under the terms of the sublicense agreement, Ildong has been granted a royalty bearing, exclusive right, including the right to grant sublicenses, to develop and commercialize ublituximab in South Korea, Taiwan, Singapore, Indonesia, Malaysia, Thailand, Philippines, Vietnam, and Myanmar.

An upfront payment of $2.0 million, which was received in December 2012, net of $0.3 million of income tax withholdings, is being recognized as license revenue on a straight-line basis over the life of the agreement, which is through the expiration of the last licensed patent right or 15 years after the first commercial sale of a product in such country, unless the agreement is earlier terminated, and represents the estimated period over which we will have certain ongoing responsibilities under the sublicense agreement. We recorded license revenue of approximately $38,000 for each of the three months ended March 31, 2024 and 2023. At March 31, 2024 and December 31, 2023, we have deferred revenue of approximately $0.3 million and $0.5 million, respectively, associated with this $2 million payment (approximately $0.2 million of which has been classified in current liabilities at March 31, 2024 and December 31, 2023).

We may receive up to an additional $5.0 million in payments upon the achievement of pre-specified milestones. In addition, upon commercialization, Ildong will make royalty payments to us on net sales of ublituximab in the sublicense territory.

In July 2023, the Company entered into the Commercialization Agreement with Neuraxpharm. The Company granted Neuraxpharm the exclusive right to commercialize BRIUMVI in territories outside the United States, Canada, and Mexico, which are retained by TG, and excluding certain Asian countries previously partnered. Under the terms of the Commercialization Agreement, the Company received a one-time, non-refundable payment of $140.0 million upon contract execution (please refer to Note 2 – Revenue). In March 2024, the Company received a $12.5 million milestone payment upon the first key market commercial launch in the EU. The Company is eligible to receive up to an additional $492.5 million in milestone-based payments on achievement of certain launch and commercial milestones. In addition, TG will receive tiered double-digit royalties on net product sales up to 30%. Royalty revenue of less than $0.1 million was recognized during the three months ended March 31, 2024. In the event of a change of control of the Company (as defined in the Commercialization Agreement), the Company retains an option to buy back all rights under the Commercialization Agreement for a period of two years thereafter.

Azer-cel

On January 7, 2024, the Company and its wholly-owned subsidiary, TG Cell Therapy, Inc., entered into the Precision License Agreement with Precision, pursuant to which Precision granted the Company certain exclusive and non-exclusive license rights to develop, manufacture, and commercialize Precision’s allogeneic CAR T therapy azercabtagene zapreleucel (azer-cel) for the treatment of autoimmune and other non-oncology diseases and conditions.

Pursuant to the Precision License Agreement, the Company made an upfront payment to Precision of $7.5 million, consisting of (i) $5.25 million in cash and (ii) $2.25 million, as an equity investment, for the purchase of 2,920,816 shares of Precision’s common stock at a price of $0.77 per share. Within 12 months of the Precision License Agreement, the Company will make a deferred payment of $2.5 million to Precision, consisting of an equity investment in Precision’s common stock at a 100% premium to the 30-day volume-weighted average price (the 30-day VWAP) prior to purchase. Upon achievement of certain near-term clinical or time-based milestones, the Company will make a $7.5 million payment to Precision, a portion of which will also be an equity investment in Precision’s common stock at a 100% premium to the 30-day VWAP prior to purchase. Precision will be eligible to receive up to $293 million in additional milestone payments based on the achievement of certain clinical, regulatory, and commercial milestones. In addition, the Company is obligated to pay Precision high-single-digit to low-double-digit royalties on net sales of the licensed product on a country-by-country basis until the latest to occur of patent expiration, loss of regulatory exclusivity, and a period of ten years following the first commercial sale of the licensed product in such country. The Company has also agreed to make certain payments to Precision’s licensors during the term of the Precision License Agreement.