Biggest changeChanges in the fair value-based measurement of stock awards could materially impact our operating results. 66 Table of Contents Results of Operations Income and Revenues Total income and revenues for the years ended December 31, 2024 and 2023, were as follows (in thousands): Year Ended December 31, 2024 2023 Change Income from purchased receivables under the EIR method $ 15,066 $ — $ 15,066 Income from purchased receivables under the cost recovery method 3,201 — 3,201 Revenue from contracts with customers 6,650 2,650 4,000 Revenue recognized under units-of-revenue method 3,570 2,108 1,462 Total income and revenues $ 28,487 $ 4,758 $ 23,729 Income from Purchased Receivables under the EIR Method Income from purchased receivables under the EIR method for the year ended December 31, 2024 included estimated income under the EIR method related to sales of VABYSMO of $14.8 million and to sales of IXINITY of $0.3 million.
Biggest changeResults of Operations Income and Revenues Total income and revenues for the years ended December 31, 2025 and 2024, were as follows (in thousands): Year Ended December 31, 2025 2024 Change Income from purchased receivables under the EIR method $ 26,745 $ 15,066 $ 11,679 Income from purchased receivables under the cost recovery method 13,744 3,201 10,543 Revenue from contracts with customers 10,350 6,650 3,700 Revenue recognized under units-of-revenue method 1,310 3,570 (2,260) Total income and revenues $ 52,149 $ 28,487 $ 23,662 Income from Purchased Receivables under the EIR Method and Cost Recovery Method The following table summarizes income recognized from purchased receivables under the EIR method and cost recovery method during the years ended December 31, 2025 and 2024 (in thousands): Year Ended December 31, 2025 2024 Change Affitech (VABYSMO) $ 23,957 $ 14,800 $ 9,157 Aptevo (IXINITY) 989 266 723 LadRx (MIPLYFFA) 1,799 — 1,799 Total income from purchased receivables under the EIR method $ 26,745 $ 15,066 $ 11,679 Viracta (OJEMDA) $ 13,716 $ 3,201 $ 10,515 Talphera (DSUVIA) 28 — 28 Total income from purchased receivables under the cost recovery method $ 13,744 $ 3,201 $ 10,543 Income from purchased receivables under the EIR method for the year ended December 31, 2025, included estimated income under the EIR method related to sales of VABYSMO of $24.0 million, sales of MIPLYFFA of $1.8 million, and sales of IXINITY of $1.0 million.
Income from Purchased Receivables under the Cost Recovery Method Income from purchased receivables under the cost recovery method for the year ended December 31, 2024 included $2.7 million in estimated income under the cost recovery method related to sales of OJEMDA and $0.5 million related to a milestone payment under the Viracta RPA.
Income from purchased receivables under the cost recovery method for the year ended December 31, 2024, included $2.7 million in estimated income under the cost recovery method related to sales of OJEMDA and $0.5 million related to a milestone payment under the Viracta RPA.
Revenue from contracts with customers for the year ended December 31, 2024 primarily included a milestone payment of $5.0 million pursuant to our license agreement with Rezolute, the $0.5 million option fee under our license agreement with Alexion, and a milestone payment of $1.0 million pursuant to a license agreement with an undisclosed licensee.
Revenue from contracts with customers for the year ended December 31, 2024, primarily included a milestone payment of $5.0 million pursuant to our license agreement with Rezolute, a $0.5 million option fee under our license agreement with Alexion, and a milestone payment of $1.0 million pursuant to a license agreement with an undisclosed licensee.
Credit Losses on Purchased Receivables Credit losses on purchased receivables were $30.9 million for the year ended December 31, 2024 and consisted of $9.0 million related to our Aronora RPA in the second quarter of 2024, $14.0 million related to our Agenus RPA in the third quarter of 2024, and $7.9 million related to our Talphera CPPA in the fourth quarter of 2024.
Credit losses on purchased receivables were $30.9 million for the year ended December 31, 2024, and consisted of $9.0 million related to our Aronora RPA in the second quarter of 2024, $14.0 million related to our Agenus RPA in the third quarter of 2024, and $7.9 million related to our Talphera CPPA in the fourth quarter of 2024.
Based on our current cash balance and our planned discretionary spending, such as royalty or other acquisitions, we believe that our current financial resources are sufficient to fund our planned operations, commitments, and contractual obligations for a period of at least one year following the filing date of this Annual Report. The generation of future income and revenue related to licenses, milestone payments, and royalties is dependent on the achievement of milestones or product sales by our existing partners.
Based on our current cash balance and our planned discretionary spending, such as royalty or other acquisitions, we believe that our current financial resources are sufficient to fund our planned operations, commitments, and contractual obligations for a period of at least one year following the filing date of this Annual Report. The generation of future income and revenue related to royalties and milestone payments is dependent on the achievement of product sales or milestones by our existing partners.
Material Cash Requirements Our material cash requirements in the short and long term consist of the following: Operating Expenditures: Our primary uses of cash and our operating expenses include employee and related costs, consultant fees to support our administrative and business development efforts, legal and accounting fees, insurance costs, and costs associated with our investor relations and IT services. To support our royalty aggregator business model, we engage third parties to assist in the evaluation of potential acquisitions of milestone payments and royalty streams.
Material Cash Requirements Our material cash requirements in the short and long term consist of the following: Operating Expenditures: Our primary uses of cash for our operating expenses include employee and related costs, consultant fees to support our administrative and business development efforts, legal and accounting fees, insurance costs, and costs associated with our investor relations and IT services. To support our royalty aggregator business model, we engage third parties to assist in the evaluation of potential acquisitions of milestone payments and royalty streams.
We generated a net loss of $13.8 million and net cash used in operating activities was $13.7 million for the year ended December 31, 2024, and we had an accumulated deficit of $1.2 billion as of December 31, 2024.
We generated a net loss of $13.8 million and net cash used in operating activities was $13.7 million for the year ended December 31, 2024. We had an accumulated deficit of $1.2 billion as of December 31, 2025.
Our developmental pipeline products are non-commercial, non-approved products that require FDA or other regulatory approval, and thus have uncertain cash flows. As of December 31, 2024, the Company is unable to reliably estimate the timing and/or amount of future cash flows associated with certain commercial product receivables and thus accounts for them under the cost recovery method.
Our developmental pipeline products are non-commercial, non-approved products that require FDA or other regulatory approval and, thus, have uncertain cash flows. As of December 31, 2025, the Company is unable to reliably estimate the timing and/or amount of future cash flows associated with certain commercial product receivables and thus accounts for them under the cost recovery method.
Loss of regulatory exclusivity, patent protection, or other additional factors that may be communicated to us by our partners or through third-party information may impact the royalty duration we use in forecasting future expected cash flows. Contingent Payments We may be obligated to make contingent payments related to certain product development milestones and sales-based milestones.
Loss of regulatory exclusivity, patent protection, or other additional factors that may be communicated to us by our partners or through third-party information may impact the royalty duration we use in forecasting future expected cash flows. 75 Table of Contents Contingent Payments We may be obligated to make contingent payments related to certain product development milestones and sales-based milestones.
We are unable to determine precisely when 72 Table of Contents and if our payment obligations under the agreements will become due as these obligations are based on milestone events, the achievement of which is subject to a significant number of risks and uncertainties.
We are unable to determine precisely when and if our payment obligations under the agreements will become due as these obligations are based on milestone events, the achievement of which is subject to a significant number of risks and uncertainties.
All of these milestones and royalty payments represent a portion of the funds we may receive in the future pursuant to these agreements, and therefore we expect these payments to be fully funded by the related royalty or commercial payment receipts.
All of these milestones and royalty payments represent a portion of the funds we may receive in the future pursuant to this agreement, and therefore we expect these payments to be fully funded by the related royalty or commercial payment receipts.
Our royalty aggregator business is primarily focused on early to mid-stage clinical assets, primarily in Phase 1 and 2 development, which we believe have significant commercial sales potential and that are licensed to well-funded partners with established expertise in developing and commercializing drugs.
Our royalty aggregator business is primarily focused on early to mid-stage clinical assets, primarily in Phase 1 and 2 development, which we believe have significant commercial sales potential and that are licensed to well-funded sponsors or developers with established expertise in developing and commercializing drugs.
Additional operating expenses, including consulting and legal costs, may continue to increase in 2025 in response to an anticipated increase in the volume of royalty or acquisition targets evaluated or completed. 71 Table of Contents We have an operating lease for our headquarters in Emeryville, California that expires in April 2029.
Additional operating expenses, including consulting and legal costs, may continue to increase in 2026 in response to an anticipated increase in the volume of royalty or acquisition targets evaluated or completed. 82 Table of Contents We have an operating lease for our headquarters in Emeryville, California that expires in April 2029.
When the recorded purchased receivable balance has been fully collected, any additional amounts collected will be recognized as income from purchased receivables under the cost recovery method. 64 Table of Contents We rely on third-party information to calculate the income recognized during the period.
When the recorded purchased receivable balance has been fully collected, any additional amounts collected will be recognized as income from purchased receivables under the cost recovery method. We rely on third-party information to calculate the income recognized during the period.
Milestone payments earned in prior periods are not indicative of anticipated milestone payments in future periods. We may seek additional capital through our 2018 Common Stock ATM Agreement or our 2021 Series B Preferred Stock ATM Agreement (see Note 12 to the consolidated financial statements), or through other public or private debt or equity transactions.
Milestone payments earned in prior periods are not indicative of anticipated milestone payments in future periods. We may seek additional capital through our 2025 Common Stock ATM Agreement or our 2025 Series B Preferred Stock ATM Agreement (see Note 14 to the consolidated financial statements), or through other public or private debt or equity transactions.
As of December 31, 2024, XRL held restricted cash of $4.8 million in reserve accounts that may only be used to pay interest and administrative fees and XRL’s operating expenses pursuant to the Blue Owl Loan Agreement.
As of December 31, 2025, XRL held restricted cash of $2.2 million in reserve accounts that may only be used to pay interest and administrative fees and XRL’s operating expenses pursuant to the Blue Owl Loan Agreement.
Our current expected credit losses are based on an estimate of discounted future cash flows for our purchased receivables, which relies on assumptions including probability of technical success and discount rate. Changes to these assumptions could have a material impact on our financial statements. Intangible Assets Our intangible asset consists of IP from the acquisition of Pulmokine.
Our current expected credit losses are based on an estimate of discounted future cash flows for our purchased receivables, which relies on assumptions including probability of technical success and discount rate. Changes to these assumptions could have a material impact on our financial statements.
Because it is uncertain if and when these milestones will be achieved, such contingencies, aggregating up to $6.3 million (assuming one product per contract meets all milestone events) have not been recorded on our consolidated balance sheet as of December 31, 2024.
Because it is uncertain if and when these milestones will be achieved, such contingencies, aggregating up to $12.1 million (assuming one product per contract meets all milestone events) have not been recorded on our consolidated balance sheet as of December 31, 2025, including the $10.0 million BioInvent 83 Table of Contents contingent consideration.
We had a total of $5.9 million of gross unrecognized tax benefits, none of which would impact our effective tax rate to the extent that we continue to maintain a full valuation allowance against our deferred tax assets.
We had a total of $5.9 million of gross unrecognized tax benefits as of December 31, 2025, none of which would impact our effective tax rate to the extent that we continue to maintain a full valuation allowance against our deferred tax assets. We do not expect our unrecognized tax benefits to change significantly over the next twelve months.
Below is a summary of the cash received from our purchased receivables and contracts with customers for the years ended December 31, 2024 and 2023 (in thousands): Year Ended December 31, 2024 2023 Royalties and commercial payments VABYSMO $ 16,888 $ 7,283 OJEMDA 1,413 — IXINITY 1,613 1,674 Other 97 — Total royalties and commercial payments 20,011 8,957 Other receipts from purchased receivables 19,250 5,000 Receipts from contracts with customers 7,100 1,650 Total cash receipts $ 46,361 $ 15,607 We have incurred significant operating losses since our inception and as of December 31, 2024, we had an accumulated deficit of $1.2 billion.
Below is a summary of the cash received from our purchased receivables and contracts with customers for the years ended December 31, 2025 and 2024 (in thousands): Year Ended December 31, 2025 2024 Royalties and commercial payments VABYSMO $ 22,507 $ 16,888 OJEMDA 6,404 1,413 MIPLYFFA 2,884 — IXINITY 1,724 1,613 OTHER 32 97 Total royalties and commercial payments 33,551 20,011 Other receipts from purchased receivables 6,000 19,250 Receipts from contracts with customers 10,900 7,100 Total cash receipts $ 50,451 $ 46,361 We have historically incurred significant operating losses and as of December 31, 2025, we had an accumulated deficit of $1.2 billion.
These changes could impact our fair value-based measurement of stock options granted in the future.
These changes 76 Table of Contents could impact our fair value-based measurement of stock options granted in the future. Changes in the fair value-based measurement of stock awards could materially impact our operating results.
Portfolio Updates – Royalty and Commercial Payment Purchase Agreements Castle Creek Royalty Purchase Agreement In February 2025, we contributed $5.0 million to Castle Creek Biosciences’ $75.0 million syndicated royalty financing transaction led by Ligand. Through this transaction, we acquired a royalty interest in D-Fi (FCX-007), a Phase 3 asset being developed by Castle Creek Biosciences.
Castle Creek Royalty Purchase Agreement In February 2025, we contributed $5.0 million to Castle Creek’s $75.0 million syndicated royalty financing transaction led by Ligand. Through this transaction, we acquired a royalty interest in D-Fi (FCX-007), a Phase 3 asset being developed by Castle Creek. D-Fi is being studied in DEB, a rare progressive and debilitating skin disorder.
D-Fi is being studied in dystrophic epidermolysis bullosa (“DEB”), a rare progressive and debilitating skin disorder. D-Fi has been granted Orphan Drug Designation for the treatment of DEB, as well as Rare Pediatric Disease, Fast Track, and Regenerative Medicine Advanced Therapy designations by the FDA.
D-Fi has been granted Orphan Drug Designation for the treatment of DEB, as well as Rare Pediatric Disease, Fast Track, and Regenerative Medicine Advanced Therapy designations by the FDA.
Net cash used in financing activities for the year ended December 31, 2024 was $11.1 million compared with net cash provided by financing activities of $120.6 million for the year ended December 31, 2023.
Net cash used in financing activities for the year ended December 31, 2025 was $26.5 million, compared with $11.1 million for the year ended December 31, 2024.
Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Overview XOMA is a biotech royalty aggregator. On July 10, 2024, we changed our name from XOMA Corporation to XOMA Royalty Corporation. We have a sizable portfolio of economic rights to future potential milestone and royalty payments associated with partnered commercial and pre-commercial therapeutic candidates.
Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Overview XOMA is a royalty aggregator. We have a sizable portfolio of economic rights to future potential milestone and royalty payments associated with over 120 commercial and pre-commercial therapeutic candidates. In 2017, we transformed our business model to become a royalty aggregator.
As of December 31, 2024, we had $101.6 million in unrestricted cash and cash equivalents and $4.8 million in restricted cash.
As of December 31, 2025, we had $82.9 million in unrestricted cash and cash equivalents and $50.8 million in restricted cash.
The difference was primarily driven by proceeds from our Blue Owl Loan in 2023. 70 Table of Contents Capital Resources We have historically financed our operations and acquisitions through debt facilities, the issuance of our common stock, Series A and Series B Preferred Stock, and amounts received as milestone payments under our license agreements.
The difference was primarily due to repurchases of common stock of $16.0 million, principal repayments on our Blue Owl Loan of $10.6 million (compared with $6.9 million in principal repayments in the year ended December 31, 2024), partially offset by net proceeds from issuances of Series B Preferred Stock of $4.0 million. 81 Table of Contents Capital Resources We have historically financed our operations and acquisitions through debt facilities, the issuance of our common stock, Series A and Series B Preferred Stock, and amounts received as milestone payments under our license agreements.
Benefit/Provision for Income Taxes We recorded an income tax benefit of $5.7 million for the year ended December 31, 2024 and no income tax benefit/provision for the year ended December 31, 2023. We continue to maintain a full valuation allowance against our remaining net deferred tax assets.
This compares to an income tax benefit of $5.7 million for the year ended December 31, 2024, primarily related to the release of valuation allowance resulting from the deferred tax liability recorded on intangible assets acquired in the Pulmokine acquisition. We continue to maintain a full valuation allowance against our net deferred tax assets.
Recoverability is measured by comparison of the carrying amount of an asset group to the future net undiscounted cash flows that the assets are expected to generate.
We review our intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability is measured by comparison of the carrying amount of an asset group to the future net undiscounted cash flows that the assets are expected to generate.
GAAP does not provide specific authoritative guidance covering such agreements, we have analogized and accounted for the purchased rights as a financial asset in accordance with ASC 310 as we believe our contractual rights to cash flows most closely resemble that of loans (see Note 5 to the consolidated financial statements).
GAAP does not provide specific authoritative guidance covering such agreements, we have analogized and accounted for the purchased rights as a financial asset in accordance with ASC 310 as we believe our contractual rights to cash flows most closely resemble that of loans (see Note 4 to the consolidated financial statements). 74 Table of Contents Royalty and Commercial Payment Receivables (Cost Recovery Method) We account for milestone and royalty rights related to developmental pipeline or recently commercialized products on a non-accrual basis using the cost recovery method for products where we are not able to reliably estimate the timing and amount of future cash flows.
During the twelve months ended December 31, 2024, we recognized a total of $14.8 million in income from purchased receivables related to the Affitech CPPA under the EIR method for sales of VABYSMO.
Income from purchased receivables under the EIR method for the year ended December 31, 2024, included estimated income under the EIR method related to sales of VABYSMO of $14.8 million and sales of IXINITY of $0.3 million.
Under the effective interest rate method, the amount and timing of contingent payments are included in the forecasted expected cash flows used to estimate royalty and commercial payment receivables and income from purchased receivables. 65 Table of Contents Allowance for Current Expected Credit Losses We review our allowance for current expected credit losses on a quarterly basis based on updates from our partners, press releases and public information on clinical trials.
Under the effective interest rate method, the amount and timing of contingent payments are included in the forecasted expected cash flows used to estimate royalty and commercial payment receivables and income from purchased receivables.
Revenue from Contracts with Customers Revenue from contracts with customers includes upfront fees, annual license fees and milestone payments related to the out-licensing of our legacy product candidates and technologies.
OJEMDA was launched in the second quarter of 2024, and we expect income from related royalties to increase in future periods based on projections reported by Day One. Revenue from Contracts with Customers Revenue from contracts with customers includes upfront fees, annual license fees and milestone payments related to the out-licensing of our legacy product candidates and technologies.
In March 2025, we paid the final $6.0 million in milestone payments due under the Affitech CPPA. We will be obligated to pay an additional $11.0 million for each successive $22.0 million received by us under the Daré RPAs after achievement of a return threshold of $88.0 million.
We expect to continue deploying capital toward these acquisitions in the near and long term. We will be obligated to pay an additional $11.0 million for each successive $22.0 million received by us under the Daré RPAs after achievement of a return threshold of $88.0 million. In addition, we have potential sales-based milestone payments that may become due under our agreement with Kuros.
Interest expense is shown below for the years ended December 31, 2024 and 2023 (in thousands): Year Ended December 31, 2024 2023 Change Accrued interest expense $ 12,490 $ 535 $ 11,955 Accretion of debt discount and debt issuance costs 1,350 34 1,316 Total interest expense $ 13,840 $ 569 $ 13,271 We incurred $13.8 million and $0.6 million in interest expense for the years ended December 31, 2024 and 2023, respectively, as a result of interest incurred on the Blue Owl Loan.
Interest expense for the years ended December 31, 2025 and 2024, was as follows (in thousands): Year Ended December 31, 2025 2024 Change Accrued interest expense $ 11,644 $ 12,490 $ (846) Accretion of debt discount and debt issuance costs 1,387 1,350 37 Total interest expense $ 13,031 $ 13,840 $ (809) Interest expense incurred for the years ended December 31, 2025 and 2024, was related to our Blue Owl Loan.
The generation of future revenues and income related to licenses, milestone payments, and royalties is dependent on the achievement of milestones or product sales by our licensees.
The generation of future revenues and income related to licenses, milestone payments, and royalties is dependent on the achievement of milestones or product sales by the sponsors, marketers, and licensees. We generated a net income of $31.7 million and net cash provided by operating activities was $2.9 million for the year ended December 31, 2025.
Revenue from contracts with customers for the year ended December 31, 2023 primarily included milestone payments of $1.5 million and $1.0 million pursuant to the license agreements with Janssen and an undisclosed licensee, respectively.
Revenue from contracts with customers for the year ended December 31, 2025, primarily included a milestone payment of $5.0 million pursuant to our Rezolute License 77 Table of Contents Agreement, $4.1 million pursuant to the Takeda Collaboration Agreement, including $3.0 million from a milestone payment and $1.1 million in other revenue, and $1.3 million in other milestone payments.
Net cash used in investing activities was $28.3 million for the year ended December 31, 2024 compared with net cash used in investing activities of $0.7 million for the year ended December 31, 2023.
The change was primarily driven by cash receipts during the year (see further details in the Capital Resources section below). Net cash provided by investing activities was $50.9 million for the year ended December 31, 2025, compared with net cash used in investing activities of $28.3 million for the year ended December 31, 2024.
The credit losses recorded for each of these programs represented the full remaining purchased receivable balance. 63 Table of Contents Portfolio Updates – License Agreements Rezolute License Agreement In April 2024, Rezolute dosed the first patient in its Phase 3 trial of RZ358, and we earned a $5.0 million milestone payment pursuant to our Rezolute License Agreement.
Portfolio Updates Rezolute License Agreement In May 2025, Rezolute dosed the last patient in its first Phase 3 trial of ersodetug (RZ358), and we earned a $5.0 million milestone payment pursuant to our Rezolute License Agreement. In December 2025, Rezolute announced the Phase 3 clinical study for ersodetug did not meet its primary and key secondary endpoints.
Subject to the terms of those agreements, we are eligible to receive net royalties ranging from the low to mid-single digits on commercial sales and we will retain a portion of future milestone payments.
We are eligible to receive up to $270.0 million in upfront and milestone payments, as well as future royalty payments at rates ranging from the low single digits to mid-teens on commercial sales.
Other Income (Expense) Gain on the Acquisition of Kinnate During the year ended December 31, 2024, we recognized a $19.3 million gain on the acquisition of Kinnate due to the fair value of net assets acquired in the acquisition of Kinnate exceeding the total purchase consideration (see Note 4 to the consolidated financial statements).
Because the fair value of these net assets exceeded the purchase price, we recognized a $3.2 million bargain purchase gain in other income (expense), net for the year ended December 31, 2025.
Intangible assets are amortized based on our best estimate of the distribution of the economic value of the respective intangible assets, which is generally the expected regulatory exclusivity. We review our intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.
Intangible Assets Our intangible assets consist of IP from the acquisition of Pulmokine, the contract-based BioInvent intangible asset, and IP from the acquisition of LAVA. Intangible assets are amortized based on our best estimate of the distribution of the economic value of the respective intangible assets, which is generally the expected regulatory exclusivity.
Our portfolio was built through the acquisition of rights to future milestones, royalties and commercial payments, since our royalty aggregator business model was implemented in 2017. These acquisitions build upon out-licensing agreements for proprietary products and platforms held within our portfolio.
We subsequently advanced our portfolio by building upon our existing out-licensing agreements for proprietary products and platforms through the acquisition of rights to future milestones, royalties and commercial payments. Currently, our portfolio is anchored royalty streams and milestone payments derived from seven commercial-stage assets.
We expect these costs to be funded in full by the cash we received upon close of the merger. Share Repurchase Program: On January 2, 2024, our Board authorized our first stock repurchase program, which permits us to purchase up to $50.0 million of our common stock through January 2027.
If the Boston Lease is terminated, assigned, or subleased after twelve months of the HilleVax Merger Closing Date, 90% of the applicable receipts will be distributed to CVR holders. Stock Repurchase Program: On January 2, 2024, our Board authorized our stock repurchase program, which permits us to purchase up to $50.0 million of our common stock through January 2027.
Revenue Recognized under Units-of-Revenue Method Revenue recognized under the units-of-revenue method includes the amortization of unearned revenue from the sale of royalty interests to HCRP in 2016. The increase in revenue for the year ended December 31, 2024 compared with the year ended December 31, 2023 was due to increased sales of products underlying the agreements with HCRP.
Revenue Recognized under Units-of-Revenue Method Revenue recognized under the units-of-revenue method includes the amortization of unearned revenue from the sale of royalty interests to HCRP in 2016. Changes in revenues recognized in each year presented are related to the changes in estimated royalties received by HCRP.
As of December 31, 2024, we expect to incur incremental undiscounted costs of $0.4 million associated with our building lease. We will be required to make future R&D and G&A expenditures related to the obligations and liabilities we assumed in the Kinnate acquisition.
As of December 31, 2025, we expect to incur incremental undiscounted costs of $0.3 million associated with our building lease. In September 2025, as part of the HilleVax acquisition, we acquired the Boston Lease that expires on December 31, 2032.
We expect these payments to be fully funded by the receipt of milestone and royalty payments from Gossamer Bio. RPAs, AAAs, and CPPAs: A significant component of our business model is to acquire rights to potential future milestone payments and royalty payment streams.
As of December 31, 2025, the current and non-current portion of the initial term loan was $12.5 million and $96.5 million, respectively, and $2.0 million of the restricted cash was classified as non-current. RPAs, AAAs, and CPPAs: A significant component of our business model is to acquire rights to potential future milestone payments and royalty payment streams.
Change in Fair Value of Embedded Derivative Related to RPA During the year ended December 31, 2024, we recognized an $8.1 million change in fair value of an embedded derivative related to RPA associated with a payment of $8.1 million for the sale of a priority review voucher by Day One, which we earned pursuant to the Viracta RPA (see Note 5 to the consolidated financial statements). 68 Table of Contents Interest Expense The accretion of debt discount and debt issuance costs is included in interest expense.
During the year ended December 31, 2024, we recognized an $8.1 million change in fair value of an embedded derivative related to RPA associated with a payment of $8.1 million for the sale of a priority review voucher by Day One, which we earned pursuant to the Viracta RPA. 79 Table of Contents Other Income, Net Other income, net for the years ended December 31, 2025 and 2024, was as follows (in thousands): Year Ended December 31, 2025 2024 Change Other income, net Gain on sale of equity securities $ 3,663 $ — $ 3,663 Investment income 3,470 6,493 (3,023) Arranger fee from ESSA transaction 3,000 — 3,000 Sublease income 840 272 568 Unrealized gain from change in fair value of equity securities 90 131 (41) Other miscellaneous income, net 1,175 25 1,150 Total other income, net $ 12,238 $ 6,921 $ 5,317 During the year ended December 31, 2025, we recognized a gain of $3.7 million from the sale of equity securities.
The increase of $8.9 million was primarily due to $7.4 million in costs associated with our acquisition of Kinnate, which primarily included $3.6 million in severance costs for exit packages provided to Kinnate senior leadership, $2.9 million in legal and consulting costs, $0.4 million in information technology costs, and $0.3 million in insurance costs.
The increase of $1.6 million was primarily due to an increase in business development and deal-related costs of $3.7 million, an increase in lease costs of $1.0 million primarily related to the HilleVax acquisition, partially offset by $3.6 million in costs related to exit packages for Kinnate senior leadership in 2024 and a decrease of $1.0 million in share-based compensation.
Credit losses on purchased receivables were $1.6 million for the year ended December 31, 2023 and consisted of the credit losses of $1.6 million related to our Bioasis RPAs in the second quarter of 2023.
Credit Losses on Purchased Receivables There were no credit losses on purchased receivables for the year ended December 31, 2025.
Sublease income increased by $0.3 million for the year ended December 31, 2024, compared with the same period in 2023 due to the lease assignment agreement acquired under the Kinnate acquisition.
The decrease of $3.0 million in investment income for the year ended December 31, 2025, as compared to 2024 was due to lower cash balances.
Kinnate Acquisition On February 16, 2024, we entered into the Kinnate Merger Agreement pursuant to which we acquired Kinnate through a tender offer for (i) $2.5879 in cash per share of Kinnate common stock, plus (ii) one non-transferable contractual CVR per share of Kinnate common stock.
In March 2026, we distributed $2.1 million to the LAVA CVR holders representing the excess net cash received in the transaction. HilleVax Acquisition In September 2025, we acquired HilleVax through a tender offer for $1.95 in cash per share of HilleVax common stock, plus one non-transferable CVR per share of HilleVax common stock, totaling approximately $105.3 million in purchase consideration.
R&D Expenses R&D expense was $2.9 million for the year ended December 31, 2024, compared with $0.1 million for the year ended December 31, 2023. The increase of $2.8 million was due to clinical trial costs related to KIN-3248. We are in the process of finalizing this study, and we expect a decrease in related R&D costs in 2025.
R&D Expenses Total research and development expenses for the years ended December 31, 2025 and 2024, were as follows (in thousands): Year Ended December 31, 2025 2024 Change Research and development $ 1,712 $ 2,875 $ (1,163) R&D expense was $1.7 million for the year ended December 31, 2025, compared with $2.9 million for the year ended December 31, 2024.
During the year ended December 31, 2024, we purchased a total of 660 shares of common stock pursuant to the stock repurchase program for $13,000. Long-Term Debt: Under the Blue Owl Loan Agreement, the outstanding principal balance will bear interest at an annual rate of 9.875%.
Burns’ resignation, following which the Cash-Out Agreement was terminated and no cash was disbursed. Long-Term Debt: Under the Blue Owl Loan Agreement, the outstanding principal balance bears interest at an annual rate of 9.875%.