Note 16 - Strategic Alliances	12 Months Ended
Dec. 31, 2023
Notes to Financial Statements
Collaborative Arrangement Disclosure [Text Block]	Note 16 Strategic Alliances Biomedical Advanced Research and Development Authority On September 28, 2023, ModeX was awarded a contract (the "BARDA Contract") from the Biomedical Advanced Research and Development Authority ("BARDA"), part of the Administration for Strategic Preparedness and Response at the U.S. Department of Health and Human Services, to advance a platform and specific product candidates designed to address a range of public health threats in viral infectious diseases. The awarded funding will enable research, development and clinical evaluation of potent multispecific antibodies, based on ModeX's proprietary MSTAR technology. MSTAR is a flexible plug-and-play platform able to incorporate four to six independent antibody binding sites into a single molecule, dramatically expanding its therapeutic potential while enabling rapid responses to emerging infections and their viral variants, including COVID-19, influenza, and other pathogens. The BARDA Contract is cost plus fixed fee, pursuant to which we will receive an initial $59.0 million payment over a five-year period from September 2023 to February 2028 for the development, manufacturing, and execution of a Phase 1 clinical trial for a next-generation MSTAR multispecific antibody with broad neutralizing activity against known variants of SARS-CoV-2. We are eligible to receive up to an additional $109.6 million from BARDA upon achieving particular milestones to develop multispecific antibodies targeting other viral pathogens, such as influenza. As part of the research program, gene-based delivery methods for the multispecific antibodies will be developed using mRNA or DNA vectors to leverage the body’s natural protein production processes. BARDA will make periodic assessments of progress, and the continuation of the BARDA Contract is based on ModeX’s performance thereunder, the timeliness and quality of deliverables, and certain other factors. The BARDA Contract contains a number of terms and conditions that are customary for government contracts of this nature, including provisions giving BARDA the right to terminate the BARDA Contract at any time in its sole discretion. The Company evaluated the BARDA Contract under ASC, Topic 606, Revenue from Contracts with Customers, or ASC 606, and concluded that the BARDA Contract is in scope of ASC 606 as the U.S. government meets the definition of a customer. The scope of the BARDA Contract includes preclinical, clinical, and manufacturing and development activities that fall into the following areas: non-clinical efficacy studies, clinical activities; manufacturing activities; and all associated regulatory, quality assurance, management and administrative activities. The R&D effort for the development of these multispecific antibodies will progress in specific stages that cover the base performance segment, and option segments. ModeX will complete specific tasks required in each of the discrete work segments. The Company identified three potential material promises under the BARDA Contract: (i) development of tetravalent trispecific antibody for COVID-19; (ii) development of multispecific protein Ab for Influenza or other pathogen; and (iii) nucleic acid delivery of a mutltispecific influenza Ab or other pathogen. The Company determined that the promise to develop a tetravalent trispecific antibody for COVID-19, is a separate performance obligation because it is distinct within the context of the contract, as the services have a standalone value and are separately identifiable from other promises within the contract. The Company evaluated the material promises that contained option rights (ii) development of multispecific protein Ab for influenza or other pathogen and (iii) nucleic acid delivery of a mutltispecific influenza Ab or other pathogen and determined (ii) and (iii) were not offered at a discount that is incremental to the range of discounts typically given for these goods and services, and as such, do not represent material rights. Therefore, options for additional services in (ii) and (iii) were not considered performance obligations at the outset of the BARDA Contract. The Company concluded that research and development services performed under the BARDA Contract would be recognized as revenue when research and development services are performed to the extent of actual costs incurred including a fixed fee and will be reimbursed by BARDA. Costs incurred represent work performed, which corresponds with, and thereby best depicts, the transfer of control of the research and development to BARDA. Types of contract costs include labor, material, and third-party services. As such, the related BARDA revenue is recognized as revenue from transfer of intellectual property and other within the Company’s Consolidated Statements of Operations. For the year ended December 31, 2023, we recorded $1.2 million in revenue under the BARDA Contract. As of December 31, 2023, the aggregate amount of transaction price allocated to remaining performance obligations, excluding unexercised contract options, was $57.8 million. We expect to recognize this amount as revenue through February 2028. Merck On March 8, 2023, ModeX, the Company (with respect to certain sections), and Merck Sharp & Dohme LLC (“Merck”) entered into a License and Research Collaboration Agreement (the “Merck Agreement”) pursuant to which ModeX granted to Merck a license to certain patent rights and know-how in connection with the development of ModeX’s preclinical nanoparticle vaccine candidate targeting the Epstein-Barr Virus. Under the terms of the Merck Agreement, ModeX granted to Merck an exclusive, sublicensable, royalty-bearing license to certain intellectual property to develop, manufacture, use and commercialize (i) a multivalent or monovalent vaccine assembled using our platform for Epstein-Barr Virus (“Vaccine”), and (ii) any pharmaceutical or biological preparation in final form containing a Vaccine for sale or for administration to human patients in a clinical trial for all uses (“Product”). We received an initial payment of $50.0 million and are eligible to receive up to an additional $872.5 million upon the achievement of certain commercial and development milestones under several indications. We are also eligible to receive tiered royalty payments ranging from high single digits to low double digits upon achievement of certain sales targets of the Product. Certain of the rights subject to the license provided by us under the Merck Agreement were obtained by us from Sanofi pursuant to that certain License Agreement entered into as of July 1, 2021 (“Sanofi In-License Agreement”) between us and Sanofi, a French corporation (“Sanofi”), and a portion of the upfront payment, milestones and royalties received by us under the Merck Agreement may be payable to Sanofi under the terms of the Sanofi In-License Agreement. As a result of such obligations under the Sanofi In-License Agreement, we paid $12.5 million to Sanofi during the year ended December 31, 2023. As part of their strategic collaboration, ModeX and Merck have put in place a research plan to manage research and other development activities related to the development of a Vaccine or Product including a joint steering committee to facilitate the research program. As part of the research plan, they will use a third-party contract development and manufacturing organization (“CDMO”) to carry out such activities unless otherwise agreed. Development costs incurred by ModeX in furtherance of these development activities will be reimbursed by Merck. To date, we have spent $14.2 million of development costs related to the Epstein -Barr Virus, for which Merck has provided or will provide reimbursement. The Merck Agreement will remain in effect until one or more Products receive marketing authorization, and, thereafter, until the expiration of all royalty obligations unless earlier terminated as permitted under the Merck Agreement. In addition to termination rights for material breach and bankruptcy, Merck is permitted to terminate the Merck Agreement in its entirety without cause after a specified notice period. If Merck terminates the Merck Agreement for convenience or by us for Merck’s uncured material breach, we may elect to receive a reversion license such that we can continue its work with Vaccines and Products which have not been terminated due to a material safety issue. LeaderMed On September 14, 2021, we and LeaderMed announced the formation of a joint venture to develop, manufacture and commercialize two of OPKO’s clinical stage, long-acting drug products in Greater China and eight other Asian territories. Under the terms of the agreements, we have granted the joint venture exclusive rights to develop, manufacture and commercialize (a) OPK88003, an oxyntomodulin analog being developed for the treatment of obesity and diabetes, and (b) Factor VIIa-CTP, a novel long-acting coagulation factor being developed to treat hemophilia, in exchange for a 47% ownership interest in the joint venture. In addition, we received an upfront payment of $1 million and will be reimbursed for clinical trial material and technical support we provide the joint venture. We recognized the upfront payment of $1 million as revenue from transfer of intellectual property and other during the year ended December 31, 2022. LeaderMed has agreed to be responsible for funding the joint venture’s operations, development and commercialization efforts and, together with its syndicate partners, initially invested $11 million in exchange for a 53% ownership interest. We retain full rights to oxyntomodulin and Factor VIIa-CTP in all other geographies. CAMP4 Therapeutics On July 6, 2021, we entered into an exclusive license agreement (the “CAMP4 Agreement”) with CAMP4, pursuant to which we granted to CAMP4 an exclusive license to develop, manufacture, commercialize or improve therapeutics utilizing the AntagoNAT technology, an oligonucleotide platform developed under OPKO CURNA, which includes the molecule for the treatment of Dravet syndrome, together with any derivative or modification thereof (the “Licensed Compound”) and any pharmaceutical product that comprises or contains the Licensed Compound, alone or in combination with one or more other active ingredients (“Licensed Product”), worldwide. The CAMP4 Agreement grant covers human pharmaceutical, prophylactic, and therapeutic and certain diagnostic uses. We received an initial upfront payment of $1.5 million and 3,373,008 shares of CAMP4’s Series A Prime Preferred Stock (“Preferred Stock”), which equates to approximately 9% of the outstanding shares of CAMP4, and we are eligible to receive up to $3.5 million in development milestone payments for Dravet syndrome products, and $4 million for non-Dravet syndrome products, as well as sales milestones of up to $90 million for Dravet syndrome products and up to $90 million for non-Dravet syndrome products. We may also receive double digit royalty payments on the net sales of royalty bearing products, subject to adjustment. In addition, upon achievement of certain development milestones, we will be eligible to receive equity consideration of up to 5,782,299 shares of Preferred Stock in connection with Dravet syndrome products and up to 1,082,248 shares of Preferred Stock in connection with non-Dravet syndrome products. In connection with our acquisition of CURNA, we agreed to pay future consideration to the sellers upon the achievement of certain events. As a result of our execution of the CAMP4 Agreement, we will have to pay a percentage of any payments received under the CAMP4 Agreement to the former CURNA stockholders. For the year ended December 31, 2021, we recognized the fair value of the upfront payments of cash and shares of Preferred Stock totaling $4.9 million in revenue from transfer of intellectual property and other. Unless earlier terminated, the CAMP4 Agreement will remain in effect on a Licensed Product-by-Licensed Product and country by-country basis until such time as the royalty term expires for a Licensed Product in a country, and expires in its entirety upon the expiration of the royalty term for the last Licensed Product in the last country. CAMP4’s royalty obligations expire on the later of (i) the expiration, invalidation or abandonment date of the last patent right in connection with the royalty bearing product, or (ii) ten (10) years after a royalty bearing product’s first commercial sale in a country. In addition to termination rights for material breach and bankruptcy, CAMP4 is permitted to terminate the CAMP4 Agreement after a specified notice period. CAMP4 has informed the Company that the FDA has placed the Dravet clinical trials on hold as CAMP4 is pursuing strategies to potentially advance to clinical trials. NICOYA Macau Limited On June 18, 2021, EirGen, our wholly owned subsidiary, and NICOYA Macau Limited (“Nicoya”), a Macau corporation and an affiliate of NICOYA Therapeutics, entered into a Development and License Agreement (the “Nicoya Agreement”) granting Nicoya the exclusive rights for the development and commercialization of extended release calcifediol (the “Nicoya Product”) in Greater China, which includes mainland China, Hong Kong, Macau, and Taiwan (collectively, the “Nicoya Territory”). Extended release calcifediol is marketed in the U.S. by OPKO under the tradename Rayaldee. The license grant to Nicoya covers the therapeutic and preventative use of the Nicoya Product for SHPT in non-dialysis and hemodialysis chronic kidney disease patients (the “Nicoya Field”). EirGen received an initial upfront payment of $5 million and is eligible to receive an aggregate additional amount of $5 million tied to the first anniversary of the effective date of the Nicoya Agreement, as amended, of which EirGen has received $2.5 million plus accrued interest for the delayed payment. Furthermore, EirGen received the additional $2.5 million upon Nicoya’s submission of an investigational new drug (IND) application to the Center for Drug Evaluation (CDE) of China in March 2023. EirGen is also eligible to receive up to an additional aggregate amount of $115 million upon the achievement of certain development, regulatory and sales-based milestones by Nicoya for the Nicoya Product in the Nicoya Territory. EirGen will also receive tiered, double digit royalty payments at rates in the low double digits on net product sales within the Nicoya Territory and in the Nicoya Field. Nicoya will, at its sole cost and expense, be responsible for performing all development activities necessary to obtain all regulatory approvals for the Nicoya Product in the Nicoya Territory and for all commercial activities pertaining to the Nicoya Product in the Nicoya Territory. Unless earlier terminated, the Nicoya Agreement will remain in effect until such time as all royalty payment terms and extended payment terms have expired, and Nicoya shall have no further payment obligations to EirGen under the terms of the Nicoya Agreement. Nicoya’s royalty obligations expire on the later of (i) expiration of the last to expire valid patent claim covering the Nicoya Product sold in the Nicoya Territory, (ii) expiration of all regulatory and data exclusivity applicable to the Nicoya Product in the Nicoya Territory, and (iii) on a product-by-product basis, ten (10) years after such Nicoya Product’s first commercial sale in the Nicoya Territory. In addition to termination rights for material breach and bankruptcy, Nicoya is permitted to terminate the Nicoya Agreement after a specified notice period. VFMCRP In May 2016, EirGen and Vifor Fresenius Medical Care Renal Pharma Ltd. (“VFMCRP”) entered into a Development and License Agreement (the “VFMCRP Agreement”) for the development and commercialization of Rayaldee (the “Product”) worldwide, except for (i) the United States and Canada, (ii) any country in Central America or South America (including Mexico), (iii) Russia, (iv) China, (v) South Korea, (vi) Ukraine, (vii) Belorussia, (viii) Azerbaijan, (ix) Kazakhstan, (x) Taiwan (xi) the Middle East, and (xii) all countries of Africa (the “VFMCRP Territory”), as amended. The license to VFMCRP potentially covers all therapeutic and prophylactic uses of the Product in human patients (the “VFMCRP Field”), provided that initially the license is for the use of the Product for the treatment or prevention of SHPT related to patients with CKD and vitamin D insufficiency/deficiency (the “VFMCRP Initial Indication”). In January 2023, the price approval for Rayaldee was granted by the German Association of Statutory Health Insurance funds (GKV-SV), which triggered a milestone payment of $7.0 million for the year ended December 31, 2023. For the year ended December 31, 2022 we recognized a milestone payment of $3.0 million in revenue from transfer of intellectual property and other for the first sale of Rayaldee in Europe. Effective May 23, 2021, we entered into an amendment to the VFMCRP Agreement pursuant to which the parties thereto agreed to include Japan as part of the VFMCRP Territory. Effective May 5, 2020, we entered into an amendment to the VFMCRP Agreement pursuant to which the parties agreed to exclude Mexico, South Korea, the Middle East and all of the countries of Africa from the VFMCRP Territory. In addition, the parties agreed to certain amendments to the milestone structure and to reduce minimum royalties payable. As revised, the Company has received a $3 million payment triggered by the first marketing approval of Rayaldee in Europe, $7.0 million payment triggered by the Germany price approval by the local sick fund association, and is eligible to receive up to an additional $15 million in regulatory milestones and $200 million in milestone payments tied to launch, pricing and sales of Rayaldee, and tiered, double-digit royalties. We plan to share responsibility with VFMCRP for the conduct of trials specified within an agreed-upon development plan, with each company leading certain activities within the plan. EirGen will lead the manufacturing activities within and outside the VFMCRP Territory and the commercialization activities outside the VFMCRP Territory and outside the VFMCRP Field in the VFMCRP Territory and VFMCRP will lead the commercialization activities in the VFMCRP Territory and the VFMCRP Field. For the initial development plan, the companies have agreed to certain cost sharing arrangements. VFMCRP will be responsible for all other development costs that VFMCRP considers necessary to develop the Product for the use of the Product for the VFMCRP Initial Indication in the VFMCRP Territory in the VFMCRP Field except as otherwise provided in the VFMCRP Agreement. The first of the clinical studies provided for in the development activities commenced in September 2018. In connection with the VFMCRP Agreement, the parties entered into a letter agreement pursuant to which EirGen granted to VFMCRP an exclusive option (the “Option”) to acquire an exclusive license under certain EirGen patents and technology to use, import, offer for sale, sell, distribute and commercialize the Product in the U.S. solely for the treatment of SHPT in dialysis patients with CKD and vitamin D insufficiency (the “Dialysis Indication”). Upon exercise of the Option, VFMCRP has agreed to reimburse EirGen for all of the development costs incurred by EirGen with respect to the Product for the Dialysis Indication in the U.S. VFMCRP would also pay EirGen up to an additional aggregate amount of $555 million of sales-based milestones upon the achievement of certain milestones and would be obligated to pay royalties at percentage rates that range from the mid-teens to the mid-twenties on sales of the Product in the U.S. for the Dialysis Indication. To date, VFMCRP has not exercised the Option. Payments received for regulatory milestones and sales milestones are non-refundable. The regulatory milestones are payable if and when VFMCRP obtains approval from certain regulatory authorities and will be recognized as revenue in the period in which the associated milestone is achieved, assuming all other revenue recognition criteria are met. We account for the sales milestones as royalties and sales milestones payments will be recognized as revenue in the period in which the associated milestone is achieved or sales occur, assuming all other revenue recognition criteria are met. Pfizer Inc. In December 2014, we entered into an exclusive worldwide agreement with Pfizer for the development and commercialization of our long-acting Somatrogon (hGH-CTP) for the treatment of growth hormone deficiency (“GHD”) in adults and children, as well as for the treatment of growth failure in children born small for gestational age (the “Pfizer Transaction”). In May 2020, we entered into an amended and restated development and commercialization license with Pfizer, effective January 1, 2020 (the “Restated Pfizer Agreement”), pursuant to which the parties agreed, among other things, to share all costs for Manufacturing Activities, as defined in the Restated Pfizer Agreement, for developing a licensed product for the three indications included in the Restated Pfizer Agreement. In June 2023, the FDA approved NGENLA (Somatrogon (hGH-CTP)) a once-weekly injection to treat pediatric growth hormone deficiency in the United States. In early 2022, the European Commission and Ministry of Health, Labour and Welfare in Japan approved NGENLA (Somatrogon). We have also received pricing approvals in Germany and Japan. NGENLA (Somatrogon (hGH-CTP)) is approved for the treatment of pediatric GHD in more than 50 markets, including Canada, Australia, Japan, and EU Member States. With the achievement of these milestones, during the year ended December 31, 2023, we recorded revenue of $90 million and during the year ended December 31, 2022, we recorded $85.0 million, in each case under the Restated Pfizer Agreement. On October 21, 2019, we and Pfizer announced that the global phase 3 trial evaluating Somatrogon dosed once-weekly in prepubertal children with GHD met its primary endpoint of non-inferiority to daily Genotropin® (somatropin) for injection, as measured by annual height velocity at 12 months. Under the terms of the Restated Pfizer Agreement, we received non-refundable and non-creditable upfront payments of $295.0 million and are eligible to receive up to an additional $275.0 million upon the achievement of certain regulatory milestones. Pfizer received the exclusive license to commercialize Somatrogon worldwide. In addition, we are eligible to receive regional, tiered gross profit sharing for both Somatrogon and Pfizer’s Genotropin® (somatropin) in all global markets, with the U.S. region commencing gross profit sharing in August 2023. The Restated Pfizer Agreement will remain in effect until the last sale of the licensed product, unless earlier terminated in accordance with its terms. In addition to termination rights for material breach and bankruptcy, Pfizer is permitted to terminate the Restated Pfizer Agreement in its entirety, or with respect to one or more world regions, without cause after a specified notice period. If the Restated Pfizer Agreement is terminated by us for Pfizer’s uncured material breach, or by Pfizer without cause, provision has been made for transition of product and product responsibilities to us for the terminated regions, as well as continued supply of product by Pfizer or transfer of supply to us in order to support the terminated regions. We recognized the non-refundable $295.0 million upfront payments as revenue as the research and development services were completed. As of December 31, 2023 and 2022, we had no contract liabilities related to the Pfizer Transaction. The Restated Pfizer Agreement includes milestone payments of $275.0 million upon the achievement of certain milestones. The milestones range from $20.0 million to $90.0 million each and are based on achievement of regulatory approval in the U.S. and regulatory approval and price approval in other major markets. The milestone payments will be recognized as revenue in the period in which the associated milestone is achieved, assuming all other revenue recognition criteria are met. To date, $175.0 million revenue has been recognized related to the achievement of the milestones. Other We have completed strategic deals with numerous institutions and commercial partners. In connection with these agreements, upon the achievement of certain milestones we are obligated to make certain payments and have royalty obligations upon sales of products developed under the license agreements. At this time, we are unable to estimate the timing and amounts of payments as the obligations are based on future development of the licensed products.

Note 16 - Strategic Alliances

12 Months Ended

Dec. 31, 2023

Collaborative Arrangement Disclosure [Text Block]

Note 16 Strategic Alliances

Biomedical Advanced Research and Development Authority

On September 28, 2023, ModeX was awarded a contract (the "BARDA Contract") from the Biomedical Advanced Research and Development Authority ("BARDA"), part of the Administration for Strategic Preparedness and Response at the U.S. Department of Health and Human Services, to advance a platform and specific product candidates designed to address a range of public health threats in viral infectious diseases. The awarded funding will enable research, development and clinical evaluation of potent multispecific antibodies, based on ModeX's proprietary MSTAR technology. MSTAR is a flexible plug-and-play platform able to incorporate four to six independent antibody binding sites into a single molecule, dramatically expanding its therapeutic potential while enabling rapid responses to emerging infections and their viral variants, including COVID-19, influenza, and other pathogens.

The BARDA Contract is cost plus fixed fee, pursuant to which we will receive an initial $59.0 million payment over a five-year period from September 2023 to February 2028 for the development, manufacturing, and execution of a Phase 1 clinical trial for a next-generation MSTAR multispecific antibody with broad neutralizing activity against known variants of SARS-CoV-2. We are eligible to receive up to an additional $109.6 million from BARDA upon achieving particular milestones to develop multispecific antibodies targeting other viral pathogens, such as influenza. As part of the research program, gene-based delivery methods for the multispecific antibodies will be developed using mRNA or DNA vectors to leverage the body’s natural protein production processes. BARDA will make periodic assessments of progress, and the continuation of the BARDA Contract is based on ModeX’s performance thereunder, the timeliness and quality of deliverables, and certain other factors. The BARDA Contract contains a number of terms and conditions that are customary for government contracts of this nature, including provisions giving BARDA the right to terminate the BARDA Contract at any time in its sole discretion.

The Company evaluated the BARDA Contract under ASC, Topic 606, Revenue from Contracts with Customers, or ASC 606, and concluded that the BARDA Contract is in scope of ASC 606 as the U.S. government meets the definition of a customer. The scope of the BARDA Contract includes preclinical, clinical, and manufacturing and development activities that fall into the following areas: non-clinical efficacy studies, clinical activities; manufacturing activities; and all associated regulatory, quality assurance, management and administrative activities. The R&D effort for the development of these multispecific antibodies will progress in specific stages that cover the base performance segment, and option segments. ModeX will complete specific tasks required in each of the discrete work segments. The Company identified three potential material promises under the BARDA Contract: (i) development of tetravalent trispecific antibody for COVID-19; (ii) development of multispecific protein Ab for Influenza or other pathogen; and (iii) nucleic acid delivery of a mutltispecific influenza Ab or other pathogen.

The Company determined that the promise to develop a tetravalent trispecific antibody for COVID-19, is a separate performance obligation because it is distinct within the context of the contract, as the services have a standalone value and are separately identifiable from other promises within the contract.

The Company evaluated the material promises that contained option rights (ii) development of multispecific protein Ab for influenza or other pathogen and (iii) nucleic acid delivery of a mutltispecific influenza Ab or other pathogen and determined (ii) and (iii) were not offered at a discount that is incremental to the range of discounts typically given for these goods and services, and as such, do not represent material rights. Therefore, options for additional services in (ii) and (iii) were not considered performance obligations at the outset of the BARDA Contract.

The Company concluded that research and development services performed under the BARDA Contract would be recognized as revenue when research and development services are performed to the extent of actual costs incurred including a fixed fee and will be reimbursed by BARDA. Costs incurred represent work performed, which corresponds with, and thereby best depicts, the transfer of control of the research and development to BARDA. Types of contract costs include labor, material, and third-party services. As such, the related BARDA revenue is recognized as revenue from transfer of intellectual property and other within the Company’s Consolidated Statements of Operations. For the year ended December 31, 2023, we recorded $1.2 million in revenue under the BARDA Contract. As of December 31, 2023, the aggregate amount of transaction price allocated to remaining performance obligations, excluding unexercised contract options, was $57.8 million. We expect to recognize this amount as revenue through February 2028.

Merck

On March 8, 2023, ModeX, the Company (with respect to certain sections), and Merck Sharp & Dohme LLC (“Merck”) entered into a License and Research Collaboration Agreement (the “Merck Agreement”) pursuant to which ModeX granted to Merck a license to certain patent rights and know-how in connection with the development of ModeX’s preclinical nanoparticle vaccine candidate targeting the Epstein-Barr Virus.

Under the terms of the Merck Agreement, ModeX granted to Merck an exclusive, sublicensable, royalty-bearing license to certain intellectual property to develop, manufacture, use and commercialize (i) a multivalent or monovalent vaccine assembled using our platform for Epstein-Barr Virus (“Vaccine”), and (ii) any pharmaceutical or biological preparation in final form containing a Vaccine for sale or for administration to human patients in a clinical trial for all uses (“Product”). We received an initial payment of $50.0 million and are eligible to receive up to an additional $872.5 million upon the achievement of certain commercial and development milestones under several indications. We are also eligible to receive tiered royalty payments ranging from high single digits to low double digits upon achievement of certain sales targets of the Product. Certain of the rights subject to the license provided by us under the Merck Agreement were obtained by us from Sanofi pursuant to that certain License Agreement entered into as of July 1, 2021 (“Sanofi In-License Agreement”) between us and Sanofi, a French corporation (“Sanofi”), and a portion of the upfront payment, milestones and royalties received by us under the Merck Agreement may be payable to Sanofi under the terms of the Sanofi In-License Agreement. As a result of such obligations under the Sanofi In-License Agreement, we paid $12.5 million to Sanofi during the year ended December 31, 2023.

As part of their strategic collaboration, ModeX and Merck have put in place a research plan to manage research and other development activities related to the development of a Vaccine or Product including a joint steering committee to facilitate the research program. As part of the research plan, they will use a third-party contract development and manufacturing organization (“CDMO”) to carry out such activities unless otherwise agreed. Development costs incurred by ModeX in furtherance of these development activities will be reimbursed by Merck. To date, we have spent $14.2 million of development costs related to the Epstein -Barr Virus, for which Merck has provided or will provide reimbursement.

The Merck Agreement will remain in effect until one or more Products receive marketing authorization, and, thereafter, until the expiration of all royalty obligations unless earlier terminated as permitted under the Merck Agreement. In addition to termination rights for material breach and bankruptcy, Merck is permitted to terminate the Merck Agreement in its entirety without cause after a specified notice period. If Merck terminates the Merck Agreement for convenience or by us for Merck’s uncured material breach, we may elect to receive a reversion license such that we can continue its work with Vaccines and Products which have not been terminated due to a material safety issue.

LeaderMed

On September 14, 2021, we and LeaderMed announced the formation of a joint venture to develop, manufacture and commercialize two of OPKO’s clinical stage, long-acting drug products in Greater China and eight other Asian territories.

Under the terms of the agreements, we have granted the joint venture exclusive rights to develop, manufacture and commercialize (a) OPK88003, an oxyntomodulin analog being developed for the treatment of obesity and diabetes, and (b) Factor VIIa-CTP, a novel long-acting coagulation factor being developed to treat hemophilia, in exchange for a 47% ownership interest in the joint venture. In addition, we received an upfront payment of $1 million and will be reimbursed for clinical trial material and technical support we provide the joint venture. We recognized the upfront payment of $1 million as revenue from transfer of intellectual property and other during the year ended December 31, 2022.

LeaderMed has agreed to be responsible for funding the joint venture’s operations, development and commercialization efforts and, together with its syndicate partners, initially invested $11 million in exchange for a 53% ownership interest. We retain full rights to oxyntomodulin and Factor VIIa-CTP in all other geographies.

CAMP4 Therapeutics

On July 6, 2021, we entered into an exclusive license agreement (the “CAMP4 Agreement”) with CAMP4, pursuant to which we granted to CAMP4 an exclusive license to develop, manufacture, commercialize or improve therapeutics utilizing the AntagoNAT technology, an oligonucleotide platform developed under OPKO CURNA, which includes the molecule for the treatment of Dravet syndrome, together with any derivative or modification thereof (the “Licensed Compound”) and any pharmaceutical product that comprises or contains the Licensed Compound, alone or in combination with one or more other active ingredients (“Licensed Product”), worldwide. The CAMP4 Agreement grant covers human pharmaceutical, prophylactic, and therapeutic and certain diagnostic uses.

We received an initial upfront payment of $1.5 million and 3,373,008 shares of CAMP4’s Series A Prime Preferred Stock (“Preferred Stock”), which equates to approximately 9% of the outstanding shares of CAMP4, and we are eligible to receive up to $3.5 million in development milestone payments for Dravet syndrome products, and $4 million for non-Dravet syndrome products, as well as sales milestones of up to $90 million for Dravet syndrome products and up to $90 million for non-Dravet syndrome products. We may also receive double digit royalty payments on the net sales of royalty bearing products, subject to adjustment. In addition, upon achievement of certain development milestones, we will be eligible to receive equity consideration of up to 5,782,299 shares of Preferred Stock in connection with Dravet syndrome products and up to 1,082,248 shares of Preferred Stock in connection with non-Dravet syndrome products. In connection with our acquisition of CURNA, we agreed to pay future consideration to the sellers upon the achievement of certain events. As a result of our execution of the CAMP4 Agreement, we will have to pay a percentage of any payments received under the CAMP4 Agreement to the former CURNA stockholders. For the year ended December 31, 2021, we recognized the fair value of the upfront payments of cash and shares of Preferred Stock totaling $4.9 million in revenue from transfer of intellectual property and other.

Unless earlier terminated, the CAMP4 Agreement will remain in effect on a Licensed Product-by-Licensed Product and country by-country basis until such time as the royalty term expires for a Licensed Product in a country, and expires in its entirety upon the expiration of the royalty term for the last Licensed Product in the last country. CAMP4’s royalty obligations expire on the later of (i) the expiration, invalidation or abandonment date of the last patent right in connection with the royalty bearing product, or (ii) ten (10) years after a royalty bearing product’s first commercial sale in a country. In addition to termination rights for material breach and bankruptcy, CAMP4 is permitted to terminate the CAMP4 Agreement after a specified notice period. CAMP4 has informed the Company that the FDA has placed the Dravet clinical trials on hold as CAMP4 is pursuing strategies to potentially advance to clinical trials.

NICOYA Macau Limited

On June 18, 2021, EirGen, our wholly owned subsidiary, and NICOYA Macau Limited (“Nicoya”), a Macau corporation and an affiliate of NICOYA Therapeutics, entered into a Development and License Agreement (the “Nicoya Agreement”) granting Nicoya the exclusive rights for the development and commercialization of extended release calcifediol (the “Nicoya Product”) in Greater China, which includes mainland China, Hong Kong, Macau, and Taiwan (collectively, the “Nicoya Territory”). Extended release calcifediol is marketed in the U.S. by OPKO under the tradename Rayaldee. The license grant to Nicoya covers the therapeutic and preventative use of the Nicoya Product for SHPT in non-dialysis and hemodialysis chronic kidney disease patients (the “Nicoya Field”).

EirGen received an initial upfront payment of $5 million and is eligible to receive an aggregate additional amount of $5 million tied to the first anniversary of the effective date of the Nicoya Agreement, as amended, of which EirGen has received $2.5 million plus accrued interest for the delayed payment. Furthermore, EirGen received the additional $2.5 million upon Nicoya’s submission of an investigational new drug (IND) application to the Center for Drug Evaluation (CDE) of China in March 2023. EirGen is also eligible to receive up to an additional aggregate amount of $115 million upon the achievement of certain development, regulatory and sales-based milestones by Nicoya for the Nicoya Product in the Nicoya Territory. EirGen will also receive tiered, double digit royalty payments at rates in the low double digits on net product sales within the Nicoya Territory and in the Nicoya Field.

Nicoya will, at its sole cost and expense, be responsible for performing all development activities necessary to obtain all regulatory approvals for the Nicoya Product in the Nicoya Territory and for all commercial activities pertaining to the Nicoya Product in the Nicoya Territory.

Unless earlier terminated, the Nicoya Agreement will remain in effect until such time as all royalty payment terms and extended payment terms have expired, and Nicoya shall have no further payment obligations to EirGen under the terms of the Nicoya Agreement. Nicoya’s royalty obligations expire on the later of (i) expiration of the last to expire valid patent claim covering the Nicoya Product sold in the Nicoya Territory, (ii) expiration of all regulatory and data exclusivity applicable to the Nicoya Product in the Nicoya Territory, and (iii) on a product-by-product basis, ten (10) years after such Nicoya Product’s first commercial sale in the Nicoya Territory. In addition to termination rights for material breach and bankruptcy, Nicoya is permitted to terminate the Nicoya Agreement after a specified notice period.

VFMCRP

In May 2016, EirGen and Vifor Fresenius Medical Care Renal Pharma Ltd. (“VFMCRP”) entered into a Development and License Agreement (the “VFMCRP Agreement”) for the development and commercialization of Rayaldee (the “Product”) worldwide, except for (i) the United States and Canada, (ii) any country in Central America or South America (including Mexico), (iii) Russia, (iv) China, (v) South Korea, (vi) Ukraine, (vii) Belorussia, (viii) Azerbaijan, (ix) Kazakhstan, (x) Taiwan (xi) the Middle East, and (xii) all countries of Africa (the “VFMCRP Territory”), as amended. The license to VFMCRP potentially covers all therapeutic and prophylactic uses of the Product in human patients (the “VFMCRP Field”), provided that initially the license is for the use of the Product for the treatment or prevention of SHPT related to patients with CKD and vitamin D insufficiency/deficiency (the “VFMCRP Initial Indication”).

In January 2023, the price approval for Rayaldee was granted by the German Association of Statutory Health Insurance funds (GKV-SV), which triggered a milestone payment of $7.0 million for the year ended December 31, 2023. For the year ended December 31, 2022 we recognized a milestone payment of $3.0 million in revenue from transfer of intellectual property and other for the first sale of Rayaldee in Europe.

Effective May 23, 2021, we entered into an amendment to the VFMCRP Agreement pursuant to which the parties thereto agreed to include Japan as part of the VFMCRP Territory.

Effective May 5, 2020, we entered into an amendment to the VFMCRP Agreement pursuant to which the parties agreed to exclude Mexico, South Korea, the Middle East and all of the countries of Africa from the VFMCRP Territory. In addition, the parties agreed to certain amendments to the milestone structure and to reduce minimum royalties payable. As revised, the Company has received a $3 million payment triggered by the first marketing approval of Rayaldee in Europe, $7.0 million payment triggered by the Germany price approval by the local sick fund association, and is eligible to receive up to an additional $15 million in regulatory milestones and $200 million in milestone payments tied to launch, pricing and sales of Rayaldee, and tiered, double-digit royalties.

We plan to share responsibility with VFMCRP for the conduct of trials specified within an agreed-upon development plan, with each company leading certain activities within the plan. EirGen will lead the manufacturing activities within and outside the VFMCRP Territory and the commercialization activities outside the VFMCRP Territory and outside the VFMCRP Field in the VFMCRP Territory and VFMCRP will lead the commercialization activities in the VFMCRP Territory and the VFMCRP Field. For the initial development plan, the companies have agreed to certain cost sharing arrangements. VFMCRP will be responsible for all other development costs that VFMCRP considers necessary to develop the Product for the use of the Product for the VFMCRP Initial Indication in the VFMCRP Territory in the VFMCRP Field except as otherwise provided in the VFMCRP Agreement. The first of the clinical studies provided for in the development activities commenced in September 2018.

In connection with the VFMCRP Agreement, the parties entered into a letter agreement pursuant to which EirGen granted to VFMCRP an exclusive option (the “Option”) to acquire an exclusive license under certain EirGen patents and technology to use, import, offer for sale, sell, distribute and commercialize the Product in the U.S. solely for the treatment of SHPT in dialysis patients with CKD and vitamin D insufficiency (the “Dialysis Indication”). Upon exercise of the Option, VFMCRP has agreed to reimburse EirGen for all of the development costs incurred by EirGen with respect to the Product for the Dialysis Indication in the U.S. VFMCRP would also pay EirGen up to an additional aggregate amount of $555 million of sales-based milestones upon the achievement of certain milestones and would be obligated to pay royalties at percentage rates that range from the mid-teens to the mid-twenties on sales of the Product in the U.S. for the Dialysis Indication. To date, VFMCRP has not exercised the Option.

Payments received for regulatory milestones and sales milestones are non-refundable. The regulatory milestones are payable if and when VFMCRP obtains approval from certain regulatory authorities and will be recognized as revenue in the period in which the associated milestone is achieved, assuming all other revenue recognition criteria are met. We account for the sales milestones as royalties and sales milestones payments will be recognized as revenue in the period in which the associated milestone is achieved or sales occur, assuming all other revenue recognition criteria are met.

Pfizer Inc.

In December 2014, we entered into an exclusive worldwide agreement with Pfizer for the development and commercialization of our long-acting Somatrogon (hGH-CTP) for the treatment of growth hormone deficiency (“GHD”) in adults and children, as well as for the treatment of growth failure in children born small for gestational age (the “Pfizer Transaction”). In May 2020, we entered into an amended and restated development and commercialization license with Pfizer, effective January 1, 2020 (the “Restated Pfizer Agreement”), pursuant to which the parties agreed, among other things, to share all costs for Manufacturing Activities, as defined in the Restated Pfizer Agreement, for developing a licensed product for the three indications included in the Restated Pfizer Agreement.

In June 2023, the FDA approved NGENLA (Somatrogon (hGH-CTP)) a once-weekly injection to treat pediatric growth hormone deficiency in the United States. In early 2022, the European Commission and Ministry of Health, Labour and Welfare in Japan approved NGENLA (Somatrogon). We have also received pricing approvals in Germany and Japan. NGENLA (Somatrogon (hGH-CTP)) is approved for the treatment of pediatric GHD in more than 50 markets, including Canada, Australia, Japan, and EU Member States. With the achievement of these milestones, during the year ended December 31, 2023, we recorded revenue of $90 million and during the year ended December 31, 2022, we recorded $85.0 million, in each case under the Restated Pfizer Agreement.

On October 21, 2019, we and Pfizer announced that the global phase 3 trial evaluating Somatrogon dosed once-weekly in prepubertal children with GHD met its primary endpoint of non-inferiority to daily Genotropin® (somatropin) for injection, as measured by annual height velocity at 12 months.

Under the terms of the Restated Pfizer Agreement, we received non-refundable and non-creditable upfront payments of $295.0 million and are eligible to receive up to an additional $275.0 million upon the achievement of certain regulatory milestones. Pfizer received the exclusive license to commercialize Somatrogon worldwide. In addition, we are eligible to receive regional, tiered gross profit sharing for both Somatrogon and Pfizer’s Genotropin® (somatropin) in all global markets, with the U.S. region commencing gross profit sharing in August 2023.

The Restated Pfizer Agreement will remain in effect until the last sale of the licensed product, unless earlier terminated in accordance with its terms. In addition to termination rights for material breach and bankruptcy, Pfizer is permitted to terminate the Restated Pfizer Agreement in its entirety, or with respect to one or more world regions, without cause after a specified notice period. If the Restated Pfizer Agreement is terminated by us for Pfizer’s uncured material breach, or by Pfizer without cause, provision has been made for transition of product and product responsibilities to us for the terminated regions, as well as continued supply of product by Pfizer or transfer of supply to us in order to support the terminated regions.

We recognized the non-refundable $295.0 million upfront payments as revenue as the research and development services were completed. As of December 31, 2023 and 2022, we had no contract liabilities related to the Pfizer Transaction.

The Restated Pfizer Agreement includes milestone payments of $275.0 million upon the achievement of certain milestones. The milestones range from $20.0 million to $90.0 million each and are based on achievement of regulatory approval in the U.S. and regulatory approval and price approval in other major markets. The milestone payments will be recognized as revenue in the period in which the associated milestone is achieved, assuming all other revenue recognition criteria are met. To date, $175.0 million revenue has been recognized related to the achievement of the milestones.

Other

We have completed strategic deals with numerous institutions and commercial partners. In connection with these agreements, upon the achievement of certain milestones we are obligated to make certain payments and have royalty obligations upon sales of products developed under the license agreements. At this time, we are unable to estimate the timing and amounts of payments as the obligations are based on future development of the licensed products.