Biggest changeAs of December 31, 2022, we had $501.4 million in federal net operating loss carryforwards, $345.3 million of various state net operating loss carryforwards, $6.7 million in federal research and orphan drug credits that will begin to expire in 2025, and $3.1 million of state research and development credits that begin to expire in 2022. 69 Results of Operations The following table summarizes our results of operations for the years ended December 31, 2022 and 2021 (in thousands): Years Ended December 31, Change 2022 2021 $ % Product revenue: Gvoke $ 52,527 $ 38,917 $ 13,610 35.0 Keveyis 49,307 10,363 38,944 nm Recorlev 7,429 — 7,429 nm Product revenue, net 109,263 49,280 59,983 121.7 Royalty, contract and other revenue 985 310 675 nm Total revenue 110,248 49,590 60,658 122.3 Cost and expenses: Cost of goods sold, excluding amortization of intangible assets 22,634 13,318 9,316 70.0 Research and development 20,966 25,160 (4,194) (16.7) Selling, general and administrative 137,745 125,718 12,027 9.6 Amortization of intangible assets 10,843 550 10,293 nm Total cost and expenses 192,188 164,746 27,442 16.7 Loss from operations (81,940) (115,156) 33,216 (28.8) Other income (expense): Interest and other income 2,578 313 2,265 nm Interest expense (15,325) (7,180) (8,145) 113.4 Change in fair value of warrants 1,760 (702) 2,462 nm Change in fair value of contingent considerations (3,157) — (3,157) nm Total other expense (14,144) (7,569) (6,575) 86.9 Net loss before benefit from income taxes (96,084) (122,725) 26,641 (21.7) Benefit from income taxes 1,424 — 1,424 nm Net loss $ (94,660) $ (122,725) $ 28,065 (22.9) 1 nm: not meaningful Product revenue, net Gvoke net revenue increased by $13.6 million or 35.0% for the year ended December 31, 2022 compared to the year ended December 31, 2021.
Biggest changeAs of December 31, 2023, we had federal net operating loss carryforwards of $494.3 million and various state net operating loss carryforwards of $352.2 million, $6.9 million in federal income tax credits will begin to expire in 2038, and the $3.7 million of state economic development and research and development credits will begin to expire in 2024. 68 Table of Contents Results of Operations The following table summarizes our results of operations for the years ended December 31, 2023 and 2022 (in thousands): Years Ended December 31, Variance 2023 2022 $ % Product revenue: Gvoke $ 67,045 $ 52,527 $ 14,518 27.6 Keveyis 56,772 49,307 7,465 15.1 Recorlev 29,547 7,429 22,118 297.7 Product revenue, net 153,364 109,263 44,101 40.4 Royalty, contract and other revenue 10,550 985 9,565 nm Total revenue 163,914 110,248 53,666 48.7 Cost and expenses: Cost of goods sold, excluding amortization of intangible assets 28,645 22,634 6,011 26.6 Research and development 22,341 20,966 1,375 6.6 Selling, general and administrative 146,095 137,745 8,350 6.1 Amortization of intangible assets 10,843 10,843 — — Total cost and expenses 207,924 192,188 15,736 8.2 Loss from operations (44,010) (81,940) 37,930 (46.3) Other income (expense): Interest and other income 4,751 2,578 2,173 84.3 Loss on debt extinguishment (2,837) (1,223) (1,614) 132.0 Interest expense (26,609) (14,102) (12,507) 88.7 Change in fair value of warrants 1 1,760 (1,759) nm Change in fair value of contingent considerations 5,200 (3,157) 8,357 nm Total other expense (19,494) (14,144) (5,350) 37.8 Net loss before benefit from income taxes (63,504) (96,084) 32,580 (33.9) Benefit from income taxes 1,249 1,424 (175) (12.3) Net loss $ (62,255) $ (94,660) $ 32,405 (34.2) nm: not meaningful Product revenue, net Gvoke net revenue increased by $14.5 million or 27.6% for the year ended December 31, 2023 compared to the year ended December 31, 2022.
As we continue the marketing and selling of Gvoke, Keveyis and Recorlev, we may not generate a sufficient amount of product revenue to fund our cash requirements. Accordingly, we may need to obtain additional financing in the future which may include public or private debt and/or equity financings.
As we continue the marketing and selling of Gvoke, Recorlev and Keveyis, we may not generate a sufficient amount of product revenue to fund our cash requirements. Accordingly, we may need to obtain additional financing in the future which may include public or private debt and/or equity financings.
We currently sell Gvoke, Keveyis and Recorlev in the United States only and Ogulo (the brand name in the European Union and United Kingdom for the Company's ready-to-use liquid glucagon product) in the United Kingdom.
We currently sell Gvoke, Recorlev and Keveyis in the United States only and Ogulo (the brand name in the European Union and United Kingdom for the Company's ready-to-use liquid glucagon product) in the United Kingdom.
In March 2022, we, Xeris Pharma and certain subsidiary guarantors, entered into a Credit Agreement and Guaranty (the "Hayfin Loan Agreement") with the lenders from time to time parties thereto (the “Lenders”) and Hayfin Services LLP, as administrative agent for the Lenders, pursuant to which we and our subsidiaries party thereto granted a first priority security interest on substantially all of our assets, including intellectual property, subject to certain exceptions.
In March 2022, we, Xeris Pharma and certain subsidiary guarantors, entered into a Credit Agreement and Guaranty (the "Hayfin Loan Agreement") with the lenders from time to time parties thereto (the "Lenders") and Hayfin Services LLP, as administrative agent for the Lenders, pursuant to which we and our subsidiaries party thereto granted a first priority security interest on substantially all of our assets, including intellectual property, subject to certain exceptions.
We expect to incur substantial 71 additional expenditures in the near term to support the marketing and selling of Gvoke, Keveyis and Recorlev as well as our ongoing research and development activities. We expect to continue to incur net losses for at least the next 12 months.
We expect to incur substantial additional expenditures in the near term to support the marketing and selling of Gvoke, Recorlev and Keveyis as well as our ongoing research and development activities. We expect to continue to incur net losses for at least the next 12 months.
The Hayfin Loan Agreement provided for the Lenders to extend $100.0 million in term loans to us on the closing date and up to an additional $50.0 million in delayed draw term loans during the one year period immediately following the closing date (collectively, the "Loans").
The Hayfin Loan Agreement provided for the Lenders to extend $100.0 million in term loans to us on the closing date and up to an additional $50.0 million in delayed draw term loan(s) during the one year period immediately following the closing date (collectively, the "Loans").
Product revenue, net Product revenue, net, represent gross product sales less estimated allowances for patient copay assistance programs, prompt payment discounts, payor rebates, chargebacks, service fees, and product returns, all of which are recorded at the time of sale to the pharmaceutical wholesaler or other customer. We apply significant judgment and estimates in determining some of these allowances.
Product revenue, net Product revenue, net, represents gross product sales less estimated allowances for patient copay assistance programs, prompt payment discounts, payor rebates, chargebacks, service fees, and product returns, all of which are recorded at the time of sale to the pharmaceutical wholesaler or other customer. We apply significant judgment and estimates in determining some of these allowances.
On December 28, 2022, we borrowed the full amount of such $50.0 million delayed draw term loan under the Hayfin Loan Agreement. In conjunction with the execution of the Hayfin Loan Agreement, the Amended Loan Agreement balance of $43.5 million was repaid in full and fees of $2.1 million in connection with the loan repayment were paid.
On December 28, 2022, we borrowed the full amount of such $50.0 million delayed draw term loan under the Hayfin Loan Agreement. In conjunction with the execution of the Hayfin Loan Agreement, the Oxford Loan Agreement balance of $43.5 million was repaid in full and fees of $2.1 million in connection with the loan repayment were paid.
Research and development expenses that are paid in 68 advance of performance are capitalized until services are provided or goods are delivered.
Research and development expenses that are paid in advance of performance are capitalized until services are provided or goods are delivered.
Our future capital requirements will depend on many factors, including: our degree of success in commercializing Gvoke, Keveyis and Recorlev; the costs of commercialization activities, including product marketing, sales and distribution; the costs, timing and outcomes of clinical trials and regulatory reviews associated with our product candidates; the effect on our product development activities of actions taken by the FDA or other regulatory authorities; the number and types of future products we develop and commercialize; the emergence of competing technologies and products and other adverse market developments; and the costs of preparing, filing and prosecuting patent applications and maintaining, enforcing and defending intellectual property-related claims.
Our future capital requirements will depend on many factors, including, but not limited to: our degree of success in commercializing Gvoke, Recorlev and Keveyis; the costs of commercialization activities, including product marketing, sales and distribution; the costs, timing and outcomes of clinical trials and regulatory reviews associated with our product candidates; the effect on our product development activities of actions taken by the FDA or other regulatory authorities; the number and types of future products we develop and commercialize; the emergence of competing technologies and products and other adverse market developments; and the costs of preparing, filing and prosecuting patent applications and maintaining, enforcing and defending intellectual property-related claims.
Based on our current operating plans and existing working capital at December 31, 2022, we believe that our cash resources are sufficient to sustain operations and capital expenditure requirements for at least the next 12 months.
Based on our current operating plans and existing working capital at December 31, 2023, we believe that our cash resources are sufficient to sustain operations and capital expenditure requirements for at least the next 12 months.
If actual results differ from our estimates, we make adjustments to these allowances in the period in which the actual results or updates to estimates become known. See "Critical Accounting Policies and Use of Estimates and Assumptions" for further information regarding the significant judgments and estimates involved in the determination of product revenue, net.
If actual results differ from our estimates, we make adjustments to these allowances in the period in which the actual 67 Table of Contents results or updates to estimates become known. See "Critical Accounting Policies and Use of Estimates and Assumptions" for further information regarding the significant judgments and estimates involved in the determination of product revenue, net.
While we believe that our returns reserve is sufficient to avoid a significant reversal of revenue in future periods, if it were to increase or decrease the rate by 1%, it would have a $1.1 million impact on revenue in the year ended December 31, 2022.
While we believe that our returns reserve is sufficient to avoid a significant reversal of revenue in future periods, if it were to increase or decrease the rate by 1%, it would have a $1.5 million impact on revenue in the year ended December 31, 2023.
Our ability to fund marketing and selling of Gvoke, Keveyis and Recorlev, as well as our product development and clinical operations, including completion of future clinical trials, will depend on the amount and timing of cash received from product revenue and potential future financings.
Our ability to fund marketing and selling of Gvoke, Recorlev and Keveyis, as well as our product development and clinical operations, including 70 Table of Contents completion of future clinical trials, will depend on the amount and timing of cash received from product revenue and potential future financings.
The latter includes the United States Patent Nos. 11,020,393 and 11,278,547, which were granted on June 1, 2021 and March 22, 2022, respectively, and which provide patent protection through 2040 for the use of Recorlev in the treatment of certain patients with persistent or recurrent Cushing’s syndrome.
The latter includes United States Patent Nos. 11,020,393, 11,278,547 and 11,903,940, which were granted on June 1, 2021, March 22, 2022, and February 22, 2024, respectively, and which provide patent protection through 2040 for the use of Recorlev in the treatment of certain patients with persistent or recurrent Cushing’s syndrome.
On January 2, 2022, we entered into a securities purchase agreement in connection with the Private Placement with Armistice for aggregate gross proceeds of approximately $30.0 million and completed the transaction on January 3, 2022.
On January 2, 2022, we entered into a securities purchase agreement in connection with the private placement of our common stock with Armistice for aggregate gross proceeds of approximately $30.0 million and completed the transaction on January 3, 2022.
Other income (expense) Other income (expense) consists primarily of interest expense related to our convertible debt, Hayfin Loan Agreement, Amended Loan Agreement, interest income earned on deposits and investments, gains and losses on extinguishment of debt and lease remeasurement, and the change in fair value of our warrants and Contingent Value Rights ("CVRs").
Other income (expense) Other income (expense) consists primarily of interest expense related to our convertible debt, Hayfin Loan Agreement, Oxford Loan Agreement, interest income earned on deposits and investments, gains and losses on extinguishment of debt and lease remeasurement, and the change in fair value of our warrants and CVRs.
On an ongoing basis, we evaluate our estimates and judgments, including, among others, those related to revenue recognition and stock-based compensation. We base our estimates on historical experience and on various other factors we believe to be appropriate under the circumstances. Actual results may differ from these estimates under different assumptions or conditions.
On an ongoing basis, we evaluate our estimates and judgments, including, among others, those related to revenue recognition and contingent considerations. We base our estimates on historical experience and on various other factors we believe to be appropriate under the circumstances. Actual results may differ from these estimates under different assumptions or conditions.
Included in the total patents, we have 59 granted patents globally related to our platform technologies, including 7 patents granted in the United States and listed in the United States FDA Orange Book covering proprietary formulations of levoketoconazole (the active pharmaceutical ingredient in Recorlev) and the uses of such formulations in treating certain endocrine-related diseases and syndromes.
Included in the total patents, we have 60 granted patents globally related to our platform technologies and 8 patents granted in the United States and listed in the United States FDA Orange Book covering proprietary formulations of levoketoconazole (the active pharmaceutical ingredient in Recorlev) and the uses of such formulations in treating certain endocrine-related diseases and syndromes.
In addition to utilizing the proceeds to repay the obligations under the Amended Loan Agreement in full, the proceeds will otherwise be used for general corporate purposes. After repayment, the Loans may not be re-borrowed.
In addition to utilizing the proceeds to repay the obligations under the Oxford Loan Agreement in full, the proceeds were otherwise used for general corporate purposes. After repayment, the Loans may not be re-borrowed.
Product Returns For some products, our customers generally have the right to return product during the period beginning six months prior to the product expiration date and up to one year after the product expiration date.
Product Returns For some products, our customers generally have the right to return product during the period beginning six months prior to the product expiration date and up to one year after the product expiration date. We use actual return data to estimate the provision for returns.
Capital Resources and Funding Requirements We have incurred operating losses since inception, and we have an accumulated deficit of $554.8 million at December 31, 2022.
Capital Resources and Funding Requirements We have incurred operating losses since inception, and we have an accumulated deficit of $617.0 million at December 31, 2023.
We accrue estimated rebates and discounts based on actual average rebate amounts and estimated percent of product that will be prescribed to qualified patients and record the rebates as a reduction of product revenue.
We accrue estimated rebates and discounts based on actual average rebate amounts and estimated percent of product that will be prescribed to qualified patients and record the rebates as a reduction of product revenue. Accrued government rebates are included in accrued trade discounts and rebates on the consolidated balance sheets.
NEW ACCOUNTING STANDARDS Refer to "Note 2 - Basis of presentation and summary of significant accounting policies and estimates" in Item 8 of this Form 10-K for a description of recent accounting pronouncements applicable to our financial statements. JOBS ACT ACCOUNTING ELECTION In April 2012, the Jumpstart Our Business Startups Act of 2012 ("JOBS Act") was enacted.
NEW ACCOUNTING STANDARDS Refer to "Note 2 - Basis of presentation and summary of significant accounting policies and estimates," in Item 8 of this Form 10-K for a description of recent accounting pronouncements applicable to our financial statements.
Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those set forth in Part I, Item 1A. Risk Factors, of this Annual Report on Form 10-K. Overview As used herein, the "Company", "Xeris", "we" or "our" refers to Xeris Pharmaceuticals, Inc.
Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those set forth in Part I, Item 1A. Risk Factors, of this Annual Report on Form 10-K. This discussion and analysis compares 2023 results to 2022.
We enter into arrangements with payors, group purchasing organizations, and healthcare providers that provide for government-mandated or privately-negotiated rebates, chargebacks and discounts related to our products.
We sell product primarily to wholesalers or a specialty pharmacy that subsequently resell to retail pharmacies or patients. We enter into arrangements with payors, group purchasing organizations, and healthcare providers that provide for government-mandated or privately-negotiated rebates, chargebacks and discounts related to our products.
In the near term, we expect to continue to incur significant expenses, operating losses and net losses as we: continue our marketing and selling efforts related to commercialization of Gvoke, Keveyis and Recorlev; continue our research and development efforts; and continue to operate as a public company.
In the near term, we expect to continue to incur significant expenses, operating losses and net losses as we: continue our marketing and selling efforts related to commercialization of Gvoke, Recorlev and Keveyis; continue our research and development efforts; continue to operate as a public company; and continue to fund our operations with an increased cost of borrowing due to a higher interest rate environment and tighter lending requirements.
We believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving management’s judgments and estimates. Our significant accounting policies are more fully described in "Note 2 - Summary of Significant Accounting Policies" of Item 8 in this Form 10-K.
We believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving management’s judgments and estimates.
Cash Flows Years Ended December 31, ( in thousands ) 2022 2021 Net cash used in operating activities $ (102,891) $ (95,535) Net cash provided by investing activities 34,461 97,964 Net cash provided by financing activities 127,473 27,247 Operating activities Net cash used in operating activities was $102.9 million for the year ended December 31, 2022, compared to $95.5 million for the year ended December 31, 2021.
Cash Flows Years Ended December 31, ( in thousands ) 2023 2022 Net cash used in operating activities $ (47,023) $ (102,891) Net cash (used in)/provided by investing activities (6,004) 34,461 Net cash (used in)/provided by financing activities (1,613) 127,473 Operating activities Net cash used in operating activities was $47.0 million for the year ended December 31, 2023, compared to $102.9 million for the year ended December 31, 2022.
There can be no assurance that such funding may be available to us on acceptable terms, or at all, or that we will be able to successfully market and sell Gvoke, Keveyis and Recorlev.
As detailed in "Note 1 – Liquidity and capital resources" of Item 8 in this Form 10-K, there can be no assurance that such funding may be available to us on acceptable terms, or at all, or that we will be able to successfully market and sell Gvoke, Recorlev and Keveyis.
Components of our Results of Operations The following discussion sets forth certain components of our statement of operations of Xeris for years ended December 31, 2022 and 2021 as well as factors that impact those items.
In addition, we may not be profitable even if we commercialize any of our product candidates. Components of our Results of Operations The following discussion sets forth certain components of the statement of operations of Xeris for years ended December 31, 2023 and 2022 as well as factors that impact those items.
Selling, general and administrative expenses Selling, general and administrative expenses consist principally of compensation and related personnel costs, marketing and selling expenses, professional fees and facility costs not otherwise included in research and development expenses.
Selling, general and administrative expenses Selling, general and administrative expenses consist primarily of compensation and related personnel costs, marketing and selling expenses, professional fees and facility costs not otherwise included in research and development expenses. Amortization of intangible assets Amortization of intangible assets relates to the amortization of our products: Keveyis and Recorlev.
Investing activities Net cash provided by investing activities was $34.5 million for the year ended December 31, 2022, compared to $98.0 million for the year ended December 31, 2021. The decrease in cash provided by investing activities in 2022 was primarily due to a lower number of investments maturing or being sold.
Investing activities Net cash used in investing activities was $6.0 million for the year ended December 31, 2023, compared to net cash provided by investing activities of $34.5 million for the year ended December 31, 2022. Cash used in investing activities in 2023 was primarily due to the purchase of short-term investments.
Contingent considerations The fair value of the CVRs was calculated by using a discounted cash flow method for the Keveyis patent milestone and an option pricing method for the Recorlev and Keveyis sales milestones. In the case of Keveyis milestones, we applied a scenario-based method and weighted them based on the possible achievement of the milestone.
We record estimated product returns in accrued returns reserve on the consolidated balance sheets and as a reduction of product revenue. Contingent considerations The fair value of the CVRs was calculated by using a discounted cash flow method for the Keveyis patent milestone and an option pricing method for the Recorlev and Keveyis sales milestones.
These entities purchase products through wholesalers at the discounted price and the wholesalers charge the difference between their list price and the discounted price back to us.
Chargebacks We arrange with certain commercial and government entities allowing them to buy products directly from wholesalers at specific prices. These entities purchase products through wholesalers at the discounted price and the wholesalers charge the difference between their list price and the discounted price back to us.
Financing We have funded our operations to date primarily with proceeds from the sale of our preferred and common stock and debt financing.
Financing We have funded our operations to date primarily with proceeds from the sale of our preferred and common stock and debt financing. For the years ended December 31, 2023 and 2022, we reported net losses of $62.3 million and $94.7 million, respectively.
We use the majority of the investment at maturity to fund operations and there was no short-term investments as of December 31, 2022. Financing activities Net cash provided by financing activities was $127.5 million for the year ended December 31, 2022, compared to $27.2 million for the year ended December 31, 2021.
In 2022, we used the majority of investments that matured to fund operations instead of re-investing . Financing activities Net cash used in financing activities was $1.6 million for the year ended December 31, 2023, compared to net cash provided by financing activities of $127.5 million for the year ended December 31, 2022.
Gvoke prescriptions grew 54.0% in 2022 compared to prior year. The growth in product demand was partially offset by a decrease in net pricing. Keveyis, which was added to our commercial product portfolio through the Acquisition in the fourth quarter of 2021, had net revenue of $49.3 million for the year ended December 31, 2022.
Gvoke prescriptions grew approximately 48.9% in 2023 compared to prior year. The growth in product demand was partially offset by a decrease in net pricing. Keveyis net revenue increased by $7.5 million or 15.1% for the year ended December 31, 2023 compared to the year ended December 31, 2022.
These gains or losses, if any, are recognized in the consolidated statements of operations and comprehensive loss.
This value is then remeasured for future expected payout as well as the increase in fair value due to the time value of money. These gains or losses, if any, are recognized in the consolidated statements of operations and comprehensive loss.
We are focused on building an innovative, self-sustaining, growth-oriented biopharma company committed to improving patients’ lives by developing and commercializing clinically meaningful products across a range of therapies. We are uniquely positioned to achieve this through our three commercial products and our proprietary formulation science (XeriSol and XeriJect) which generates partnerships and enhances our product candidates.
("Xeris Biopharma"). Throughout this document, unless otherwise noted, references to Gvoke include Gvoke PFS, Gvoke HypoPen, Gvoke Kit and Ogluo. We are focused on building an innovative, self-sustaining, growth-oriented biopharmaceutical company committed to improving patients’ lives by developing and commercializing clinically meaningful products across a range of therapies.
A 10% change of estimated net revenue will change the CVR value by approximately $6 million or 25%. The estimated value of the CVR consideration is based upon available information and certain assumptions which our management believes are reasonable under the circumstances.
The estimated value of the CVR consideration is based upon available information and certain assumptions which our management believes are reasonable under the circumstances. The ultimate payout under the CVRs may differ materially from the assumptions used in determining the fair value of the CVR consideration.
For the years ended December 31, 2022 and 2021, we reported net losses of $94.7 million and $122.7 million, respectively. We have not been profitable since inception, and, as of December 31, 2022, our accumulated deficit was $554.8 million.
We have not been profitable since inception, and, as of December 31, 2023, our accumulated deficit was $617.0 million.
The increase was primarily due to the net proceeds of $30.0 million from the January 2022 private placement of our common stock with an affiliate of Armistice, proceeds net of debt issuance costs of $141.3 million from the March 2022 Hayfin Loan Agreement, partially offset by the payoff of the principals on the Amended Loan Agreement of $43.5 million in March 2022, as compared to the proceeds of $27.0 million from the March 2021 registered direct offering of our common stock. 72 CRITICAL ACCOUNTING POLICIES AND USE OF ESTIMATES AND ASSUMPTIONS Our management’s discussion and analysis of our financial condition and results of operations on our financial statements have been prepared in accordance with generally accepted accounting principles ("GAAP") in the United States.
The cash provided by financing activities in 2022 was primarily due to the net proceeds of $30.0 million from the January 2022 private placement of our common stock with an affiliate of Armistice, proceeds net of debt issuance costs of $141.3 million from the Hayfin Loan Agreement, partially offset by the payoff of the outstanding principal under the Oxford Loan Agreement of $43.5 million in March 2022.
We expect some of these costs to continue to increase in conjunction with our anticipated growth and complexity as a public reporting company. Amortization of intangible assets Amortization of intangible assets relates to the amortization of our products: Keveyis and Recorlev. These two intangible assets are being amortized over a five-year and fourteen-year period, respectively, using the straight-line method.
These two intangible assets are being amortized over a five-year and fourteen-year period, respectively, using the straight-line method.
Research and development expenses Research and development expenses decreased $4.2 million or 16.7% for the year ended December 31, 2022 compared to the year ended December 31, 2021. The decrease was primarily driven by lower product development costs.
Research and development expenses 69 Table of Contents Research and development expenses increased by $1.4 million or 6.6% for the year ended December 31, 2023 compared to the year ended December 31, 2022, driven by the expenses related to the Phase 2 study for XP-8121.
Patents We currently own 176 patents issued globally, including a composition of matter patent covering our ready-to-use glucagon formulation that expires in 2036.
We are uniquely positioned to achieve this through our three commercial products and our proprietary formulation science (XeriSol and XeriJect), which generates partnerships and enhances our product candidates. Patents We currently own 170 patents issued globally, including composition of matter patents covering our ready-to-use glucagon formulation that expire in 2036.
This fair value measurement is based on significant inputs not observable in the market and thus represents a Level 3 measurement as defined in ASC 820, Fair Value Measurement . The key assumptions used include the discount rate and sales growth. A 1% change of the discount rate will change the CVR value by approximately $0.4 million or 2%.
The key assumptions used include the discount rate and sales growth. A 1% change of the discount rate will change the CVR value by approximately $0.02 million or 0.1%. A 10% change of estimated net revenue will change the CVR value by approximately $1.7 million or 8%.
Selling, general and administrative expenses Selling, general and administrative expenses increased $12.0 million or 9.6% for the year ended December 31, 2022 compared to the year ended December 31, 2021. Personnel-related costs increased by $24.9 million primarily to support Keveyis, acquired in October 2021, and Recorlev, launched in 2022, as well as an expansion of our Gvoke sales force.
Selling, general and administrative expenses Selling, general and administrative expenses increased by $8.4 million or 6.1% for the year ended December 31, 2023 compared to the year ended December 31, 2022, due to higher personnel costs and rent expenses related to the new lease which commenced in April 2023.
Other income (expense) For the year ended December 31, 2022, interest expense increased $8.1 million or 113.4% compared to the year ended December 31, 2021. The increase was primarily due to higher interest expense related to the Hayfin loan.
The increase was primarily due to a higher principal amount and increased interest rates related to third party debt arrangements. Other expense in the years ended December 31, 2023 and December 31, 2022 included losses of $2.8 million and $1.2 million, respectively, on extinguishment of debt related to the third party debt arrangements.
Recorlev, which received FDA approval in December 2021, had net revenue of $7.4 million for the year ended December 31, 2022. Cost of goods sold Cost of goods sold was $22.6 million and $13.3 million for the year ended December 31, 2022 and 2021, respectively. The increase was attributable to sales growth.
Cost of goods sold Cost of goods sold increased by $6.0 million or 26.6% for the year ended December 31, 2023 compared to the year ended December 31, 2022. The increase was mainly attributable to higher product sales, partially offset by the product mix and a one-time contract credit in the first quarter of 2023.