Biggest changeAs part of our liquidity strategy, we will continue to monitor our capital structure and operating plans and we may access the capital markets or debt markets for additional funding if the opportunity arises to enhance our capital structure for changes to our operating plans, for financing strategic initiatives and to provide financial flexibility. 80 Cash Flows The following is a summary of cash flows for each of the periods set forth below (in thousands): Year Ended December 31, 2023 2022 Net cash used in operating activities $ (70,163) $ (66,312) Net cash provided by investing activities 89,713 26,882 Net cash provided by financing activities 20,366 41,762 Net increase in cash and cash equivalents $ 39,916 $ 2,332 Net cash used in operating activities Net cash used in operating activities was $70.2 million for the year ended December 31, 2023, and consisted of a net loss of $60.4 million, a $14.1 million exchange-related gain, a $6.6 million gain in the fair value of derivatives on convertible notes, and a $4.0 million net change in operating assets and liabilities, partially offset by $8.7 million of stock-based compensation, and $6.3 million related to depreciation/amortization and other non-cash items. Net cash used in operating activities was $66.3 million for the year ended December 31, 2022, and consisted of a $184.2 million gain in the fair value of derivatives on convertible notes, a $43.7 million gain on fair value adjustment of options, a $2.5 million net change in operating assets and liabilities, partially offset by net income of $142.1 million, $13.3 million related to depreciation/amortization and other non-cash items, $8.6 million of stock-based compensation, and $0.1 million of loss on extinguishment of options. Net cash provided by investing activities Net cash provided by investing activities was $89.7 million for the year ended December 31, 2023, and consisted of $158.6 million from the sale and maturity of marketable securities, offset by $68.5 million from the purchase of marketable securities and $0.4 million of capital expenditures for laboratory equipment and leasehold improvements. Net cash provided by investing activities was $26.9 million for the year ended December 31, 2022, and consisted of $131.9 million from the sale and maturity of marketable securities, offset by $104.7 million from the purchase of marketable securities and $0.3 million of capital expenditures for laboratory equipment. Net cash provided by financing activities Net cash provided by financing activities was $20.4 million for the year ended December 31, 2023, and primarily consisted of $7.4 million in proceeds related to the issuance of common stock and the exercise of stock options and warrants, $14.7 million in proceeds from the issuance of the PHC Purchase Warrant, and $24.4 million in net proceeds from borrowings pursuant to the Loan and Security Agreement, partially offset by $15.7 million and $7.5 million in repayment of the 2023 and 2025 notes, respectively, $2.7 million taxes paid related to net share settlement of equity awards, and $0.4 million in debt issuance costs. Net cash provided by financing activities was $41.8 million for the year ended December 31, 2022, and primarily consisted of $12 million in proceeds from the issuance of Series B preferred stock related to the Energy Capital option exercise, $34.2 million from issuance of common stock, and $1.1 million for proceeds related to exercise of stock options and warrants, offset by $2.9 million in repayment of the PPP loan and $2.6 million taxes paid related to net share settlement of equity awards. 81
Biggest changeThere is no assurance that the Company will be successful in obtaining sufficient funding on acceptable terms, if at all, and could be forced to delay, reduce, or eliminate some or all of its research, clinical trials, product development or future commercialization efforts, which could materially adversely affect its business prospects or its ability to continue as a going concern. 79 Cash Flows The following is a summary of cash flows for each of the periods set forth below (in thousands): Year Ended December 31, 2024 2023 Net cash used in operating activities $ (60,465) $ (70,163) Net cash provided by investing activities 32,838 89,713 Net cash provided by financing activities 26,830 20,366 Net (decrease) increase in cash and cash equivalents $ (797) $ 39,916 Net cash used in operating activities Net cash used in operating activities was $60.5 million for the year ended December 31, 2024, and consisted of a net loss of $78.6 million, partially offset by a $0.9 million net change in operating assets and liabilities, $9.2 million of stock-based compensation, $3.9 million in non-cash inventory costs primarily due to transition to the 365-day product, and $4.1 million related to depreciation/amortization and other non-cash items. Net cash used in operating activities was $70.2 million for the year ended December 31, 2023, and consisted of a net loss of $60.4 million, a $14.1 million exchange-related gain, a $6.6 million gain in the fair value of derivatives on convertible notes, and a $4.0 million net change in operating assets and liabilities, partially offset by $8.7 million of stock-based compensation, and $6.3 million related to depreciation/amortization and other non-cash items. Net cash provided by investing activities Net cash provided by investing activities was $32.8 million for the year ended December 31, 2024, and consisted of $93.1 million from the sale and maturity of marketable securities, partially offset by $58.1 million from the purchase of marketable securities and $2.2 million of capital expenditures for laboratory equipment and leasehold improvements. Net cash provided by investing activities was $89.7 million for the year ended December 31, 2023, and consisted of $158.6 million from the sale and maturity of marketable securities, partially offset by $68.5 million from the purchase of marketable securities and $0.4 million of capital expenditures for laboratory equipment and leasehold improvements. Net cash provided by financing activities Net cash provided by financing activities was $26.8 million for the year ended December 31, 2024, and primarily consisted of an aggregate of $4.0 million in proceeds related to the issuance of common stock pursuant to our at the market offering and the exercise of stock options, $14.5 million in proceeds from a registered direct offering, and $10.0 million in net proceeds from borrowings pursuant to the Loan and Security Agreement, partially offset by $1.7 million taxes paid related to net share settlement of equity awards. Net cash provided by financing activities was $20.4 million for the year ended December 31, 2023, and primarily consisted of an aggregate of $7.4 million in proceeds related to the issuance of common stock pursuant to our at the market offering and the exercise of stock options, $14.7 million in proceeds from the issuance of the PHC Purchase Warrant, and $24.4 million in net proceeds from borrowings pursuant to the Loan and Security Agreement, partially offset by $15.7 million and $7.5 million in repayment and exchange of the 2023 Notes and 2025 Notes, respectively, $2.7 million taxes paid related to net share settlement of equity awards, and $0.4 million in debt issuance costs. 80
(“Hercules”) in its capacity as administrative agent and collateral agent for itself and the Lenders, pursuant to which the Lenders agreed to make available up to $50.0 million in senior secured term loans (the “Term Loan Facility”), consisting of (i) an initial term loan of $25.0 million (the “Tranche 1 Loan”), which was funded on September 8, 2023 and (ii) two additional tranches of term loans in the amounts of up to $10.0 million (the “Tranche 2 Loan”) and $15.0 million (the “Tranche 3 Loan”), respectively, which will become available to us upon our satisfaction of certain terms and conditions set forth in the Loan and Security Agreement.
(“Hercules”) in its capacity as administrative agent 76 and collateral agent for itself and the Lenders, pursuant to which the Lenders agreed to make available up to $50.0 million in senior secured term loans (the “Term Loan Facility”), consisting of (i) an initial term loan of $25.0 million (the “Tranche 1 Loan”), which was funded on September 8, 2023 and (ii) two additional tranches of term loans in the amounts of up to $10.0 million (the “Tranche 2 Loan”) and $15.0 million (the “Tranche 3 Loan”), respectively, which will become available to us upon our satisfaction of certain terms and conditions set forth in the Loan and Security Agreement.
You should review the “Risk Factors” section of this Annual Report for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis. Overview We are a medical technology company focused on the development and manufacturing of glucose monitoring products designed to transform lives in the global diabetes community with differentiated, long-term implantable glucose management technology.
You should review the “Risk Factors” section of this Annual Report for a discussion of important factors that could cause actual results to differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis. Overview We are a medical technology company focused on the development and manufacturing of glucose monitoring products designed to transform lives in the global diabetes community with differentiated, long-term implantable glucose 69 management technology.
The loans under the Loan and Security Agreement mature on September 1, 2027. 77 On August 10, 2023, we entered into separate, privately negotiated exchange agreements (the “Exchange Agreements”) with a limited number of holders (the “Noteholders”) of our outstanding 5.25% Convertible Senior Notes due 2025 (the “2025 Notes”).
The loans under the Loan and Security Agreement mature on September 1, 2027. On August 10, 2023, we entered into separate, privately negotiated exchange agreements (the “Exchange Agreements”) with a limited number of holders (the “Noteholders”) of our outstanding 5.25% Convertible Senior Notes due 2025 (the “2025 Notes”).
This sub-set of 72 30 participants were left undisturbed for 365 days with the goal of measuring accuracy and longevity over the full 365 days.
This sub-set of 30 participants were left undisturbed for 365 days with the goal of measuring accuracy and longevity over the full 365 days.
Upon the closing of the PHC Notes, we prepaid in full the First Lien Notes, issued and sold pursuant a loan agreement with Highbridge Capital Management, LLC (“Highbridge”) (the “Highbridge Loan Agreement”), in the amount of approximately $17.6 million.
Upon the closing of the PHC Notes, we 77 prepaid in full the First Lien Notes, issued and sold pursuant to a loan agreement with Highbridge Capital Management, LLC (“Highbridge”) (the “Highbridge Loan Agreement”), in the amount of approximately $17.6 million.
As described in Note 21, on March 13, 2023, we entered into an agreement with PHC, whereby PHC has agreed to exchange the PHC Notes for a warrant (the “PHC Exchange Warrant”) to purchase up to 68,525,311 shares of common stock. The 78 Exchange Warrant is a “pre-funded” warrant with a nominal exercise price of $0.001 per share.
As described in Note 2, on March 13, 2023, we entered into an agreement with PHC, whereby PHC has agreed to exchange the PHC Notes for a warrant (the “PHC Exchange Warrant”) to purchase up to 68,525,311 shares of common stock. The Exchange Warrant is a “pre-funded” warrant with a nominal exercise price of $0.001 per share.
In February 2022, the extended life Eversense E3 CGM system was approved by the FDA. In June 2019, we received FDA approval for the non-adjunctive indication (dosing claim) for the Eversense system and launched with an updated app in December 2019.
In February 2022, the Eversense E3 CGM system was approved by the FDA. In June 2019, we received FDA approval for the non-adjunctive indication (dosing claim) for the Eversense system and launched with an updated app in December 2019.
Ascensia began commercializing Eversense E3 in the United States during the second quarter of 2022. The ENHANCE clinical study was initiated as a pivotal study with the purpose of gathering additional clinical data to support an integrated continuous glucose monitoring (“iCGM”) submission for the Eversense E3 system using the SBA technology.
Ascensia began commercializing Eversense E3 in the United States during the second quarter of 2022. 71 The ENHANCE clinical study was initiated as a pivotal study with the purpose of gathering additional clinical data to support an integrated continuous glucose monitoring (iCGM) submission for the Eversense E3 system using the SBA technology.
Variable consideration, such as discounts and prompt-pay incentives, are treated as a reduction in revenue and variable considerations, such as revenue share, is treated as an addition in revenue when the product sale is recognized.
Variable consideration, such as rebates and prompt-pay incentives, are treated as a reduction in revenue and variable considerations, such as revenue share, is treated as an addition in revenue when the product sale is recognized.
These estimates, particularly estimates relating to accounting for variable consideration related to revenue and embedded derivatives, have a material impact on our financial statements and are discussed in detail throughout our analysis of the results of operations discussed below. We did not make any material changes to these assumptions for the year ended December 31, 2023.
These estimates, particularly estimates relating to accounting for variable consideration related to revenue, inventory obsolescence and embedded derivatives, have a material impact on our financial statements and are discussed in detail throughout our analysis of the results of operations discussed below. We did not make any material changes to these assumptions for the year ended December 31, 2024.
The 2023 Notes were paid in full in January 2023 and the derivative liability was derecognized. In connection with our issuance of the convertible senior subordinated notes due 2025, or the 2025 Notes in July 2019, we bifurcated the embedded conversion option along with the fundamental change make-whole provision and the cash settled fundamental make-whole shares provision, and recorded the fair value of these embedded features as a derivative liability in our consolidated balance sheets in accordance with Accounting Standards Codification, or ASC, Topic 815, Derivatives and Hedging. In August 2020, we issued convertible senior secured notes due 2024, or the PHC Notes.
The 2023 Notes were paid in full in January 2023 and the derivative liability was derecognized. In connection with our issuance of the convertible senior subordinated notes due 2025, or the 2025 Notes in July 2019, we bifurcated the embedded conversion option along with the fundamental change make-whole provision and the cash settled fundamental make-whole shares provision, and recorded the fair value of these embedded features as a derivative liability in our consolidated balance sheets in accordance with Accounting Standards Codification, or ASC, Topic 815, Derivatives and Hedging.
All or any part of the Purchase Warrant shall is exercisable by the holder at any time and from time to time. In addition, on March 13, 2023, we entered into an exchange agreement with PHC, pursuant to which PHC agreed to exchange $35.0 million aggregate principal amount of the PHC Notes, including all accrued and unpaid interest thereon, for a warrant (the “PHC Exchange Warrant”) to purchase up to 68,525,311 shares of common stock.
All or any part of the Purchase Warrant is exercisable by PHC at any time and from time to time. In March 2023, we entered into an exchange agreement with PHC, pursuant to which PHC exchanged $35.0 million aggregate principal amount of the PHC Notes, including all accrued and unpaid interest thereon, for a warrant (the “PHC Exchange Warrant”) to purchase up to 68,525,311 shares of common stock.
We do not expect any material changes in the near term to the underlying assumptions during the year ended December 31, 2024. We base our estimates on historical experience and various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets, liabilities and equity that are not readily apparent from other sources.
We do not expect any material changes to the underlying assumptions during the year ending December 31, 2025. We base our estimates on historical experience and various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets, liabilities and equity that are not readily apparent from other sources.
In February 2024, we announced that Medicare coverage was expanded for Eversense E3 to include all people with diabetes using insulin and non-insulin users who have a history of problematic hypoglycemia providing access to millions of Medicare patients.
In February 2024, we announced that Medicare coverage was expanded for Eversense E3 to include all people with diabetes using insulin and non-insulin users who have a history of problematic hypoglycemia providing access to millions of Medicare patients. All of the Medicare administrative contractors (“MAC”) expansions became effective in 2024.
Our implantable CGM (“Eversense”), Eversense E3 continuous glucose monitoring (“CGM”) system version is designed to continually and accurately measure glucose levels in people with diabetes via an under-the-skin sensor, a removable and rechargeable smart transmitter, and a convenient app for real-time diabetes monitoring and management for a period of up to six months as compared to seven to 14 days for non-implantable CGM systems.
Our implantable CGM (“Eversense”), including Eversense E3 and Eversense 365 CGM systems are designed to continually and accurately measure glucose levels in people with diabetes via an under-the-skin sensor, a removable and rechargeable smart transmitter, and a convenient app for real-time diabetes monitoring and management for a period of up to six months in the case of Eversense E3 and up to twelve months in the case of Eversense 365, as compared to seven to 14 days for non-implantable CGM systems.
We have reached approximately 300 million covered lives in the United States through positive insurance payor coverage decisions. In June 2023, we received positive payor coverage decision from UnitedHealthcare, the largest healthcare insurance company in the United States that effective July 1, 2023, Eversense E3 CGM system would be covered.
In June 2023, we received positive payor coverage decision from UnitedHealthcare, the largest healthcare insurance company in the United States that effective July 1, 2023, Eversense E3 CGM system would be covered.
Contracts with our distributors contain performance obligations, mostly for the supply of goods, and is typically satisfied upon transfer of control of the product. Customer contracts do not include the right to return unless there is a product issue, in which case we may provide replacement product.
Our contract with Ascensia contains performance obligations, mostly for the supply of goods, and are typically satisfied upon transfer of control of the product and does not include the right to return unless there is a product issue, in which case we may provide replacement product.
The number of shares issued was determined based upon the volume-weighted average price per share of the common stock during a 15-day averaging period.
The number of shares issued was determined based upon the volume-weighted average price per share of the common stock during a 15-day averaging period. Based on the volume-weighted average price per share of the common stock during the averaging period, we issued a total of 35.1 million shares of common stock in the exchanges.
In February 2022, the 180-day extended life Eversense E3 CGM system was approved by the FDA and Ascensia began commercializing Eversense E3 in the United States in the second quarter of 2022. Our net revenues are derived from sales of the Eversense system which is sold in two separate kits: the disposable Eversense Sensor Pack which includes the sensor, insertion tool, and adhesive patches, and the durable Eversense Smart Transmitter Pack which includes the transmitter and charger. We sell directly to our network of distributors and strategic fulfillment partners, who provide the Eversense system to healthcare providers and patients through a prescribed request and invoice insurance payors for reimbursement.
In September 2024, the 365-day extended life Eversense E3 CGM system was approved by the FDA and Ascensia began commercializing Eversense 365 in the United States in the fourth quarter of 2024. Our net revenues are derived from sales of the Eversense CGM system which includes the Eversense Sensor Pack containing the sensor, insertion tool, and adhesive patches, the Eversense Smart Transmitter Pack containing the transmitter and charger and in some cases the procedure revenue associated with insertions and removals. We primarily sell directly to our network of distributors, strategic fulfillment partners, who provide the Eversense system to healthcare providers and patients through a prescribed request and invoice insurance payors for reimbursement.
The Warrant was exercised in full in February 2022. On August 9, 2020, we entered into a financing agreement with Ascensia’s parent company, PHC Holdings Corporation (“PHC”), pursuant to which we issued $35.0 million in aggregate principal amount of Senior Secured Convertible Notes due on October 31, 2024 (the “PHC Notes”), to PHC on the Closing Date.
We received aggregate gross proceeds of $15.0 million in the transaction, before deducting private placement expenses payable by us. On August 9, 2020, we entered into a financing agreement with Ascensia’s parent company, PHC Holdings Corporation (“PHC”), pursuant to which we issued $35.0 million in aggregate principal amount of Senior Secured Convertible Notes due on October 31, 2024 (the “PHC Notes”), to PHC on the Closing Date.
In November 2022, CMS released its Calendar Year 2023 Medicare Physician Fee Schedule Proposed Rule that updates the payment amounts for the three CPT© Category III codes to account for the longer 6-month sensor. The Calendar Year 2024 Medicare Physician Fee Schedule continues to include the three CPT© Category III codes.
In December 2021, CMS released its Calendar Year 2022 Medicare Physician Fee Schedule that updated global payments for the device cost and procedure fees. In November 2022, CMS released its Calendar Year 2023 Medicare Physician Fee Schedule Proposed Rule that updates the payment amounts for the three CPT© III codes to account for the longer 6-month sensor.
On March 31, 2023 (6:00 am Japan Standard Time on April 1, 2023), the PHC Exchange was consummated, and the Company issued the PHC Exchange Warrant in consideration for the cancellation of the PHC Notes. Warrants In connection with certain of our historical financing transactions, we have issued warrants to investors and providers of debt financing, as described below. On June 30, 2016, we entered into a loan agreement with Oxford Finance and Silicon Valley Bank (collectively, the “Lenders”) and issued to the Lenders 10-year stock purchase warrants to purchase an aggregate of 116,581, 63,025 and 80,645 shares of common stock at an exercise price of $3.86, $2.38 and $1.86 per share, respectively (“Oxford/SVB Warrants”).
In the first quarter of 2025, Energy Capital converted its Series B Preferred Stock in full into 30,372,058 shares of common stock. Warrants In connection with certain of our historical financing transactions, we have issued warrants to investors and providers of debt financing, as described below. On June 30, 2016, we entered into a loan agreement with Oxford Finance and Silicon Valley Bank (collectively, the “Lenders”) and issued to the Lenders 10-year stock purchase warrants to purchase an aggregate of 116,581, 63,025 and 80,645 shares of common stock at an exercise price of $3.86, $2.38 and $1.86 per share, respectively (“Oxford/SVB Warrants”).
The distribution rights under the agreement expired January 31, 2021. 73 In June 2022, we affixed the CE mark for the Eversense E3 CGM system, and Ascensia began commercialization in certain European markets during the second half of 2022. Critical Accounting Estimates The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of our consolidated financial statements requires us to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities and equity and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period.
Following CE Mark approval, we plan to launch Eversense 365 with our global commercial partner, Ascensia, in the second half of 2025. Critical Accounting Estimates The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of our consolidated financial statements requires us to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities and equity and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period.
Our gross profit increased to $3.1 million for the year ended December 31, 2023, compared to $2.7 million for the year ended December 31, 2022. Gross profit as a percentage of revenue, or gross margin, was 13.8% and 16.6% for the years ended December 31, 2023 and 2022, respectively.
Our gross profit decreased to $0.5 million for the twelve months ended December 31, 2024, compared to $3.1 million for the twelve months ended December 31, 2023. Gross profit as a percentage of revenue, or gross margin, was 2.4% and 13.8% for the twelve months ended December 31, 2024 and December 31, 2023, respectively.
As of the date of this Annual Report on Form 10-K, no sales have been made under the Equity Distribution Agreement. In November 2021, we entered into an Open Market Sale Agreement (the “2021 Sales Agreement”) with Jefferies LLC (“Jefferies”) under which we could offer and sell, from time to time, at our sole discretion, shares of our common stock having an aggregate offering price of up to $150.0 million through Jefferies as our sales agent in an “at the market” offering.
For the year ended December 31, 2024, the Company received approximately $4.3 million in net proceeds from the sale of 11,918,121 shares under the Equity Distribution Agreement. In November 2021, we entered into an Open Market Sale Agreement (the “2021 Sales Agreement”) with Jefferies LLC (“Jefferies”) under which we could offer and sell, from time to time, at our sole discretion, shares of our common stock having an aggregate offering price of up to $150.0 million through Jefferies as our sales agent in an “at the market” offering.
The Tranche 2 Warrants may be exercised through the earlier of (i) September 8, 2030 and (ii) the consummation of certain acquisition transactions involving the company, as set forth in the warrant agreement. 79 The number of shares for which the Tranche 1 Warrants are exercisable and the associated exercise price are subject to certain customary proportional adjustments for fundamental events, including stock splits and reverse stock splits, as set forth in the warrant agreement. Indebtedness Loan and Security Agreement On September 8, 2023, we entered into the Loan and Security Agreement with the Lenders and Hercules, pursuant to which the Lenders agreed to make available to us the Term Loan Facility, consisting of (i) an initial Tranche 1 Loan, which was funded in the amount of $25.0 million on the Effective Date and (ii) the Tranche 2 Loan and Tranche 3 Loan, respectively, which would become available to the Company upon our satisfaction of certain terms and conditions set forth in the Loan and Security Agreement.
The PP Warrants are non-exercisable for the first six months after issuance and expire on April 29, 2030. Indebtedness Loan and Security Agreement On September 8, 2023, we entered into the Loan and Security Agreement with the Lenders and Hercules, pursuant to which the Lenders agreed to make available to us the Term Loan Facility, consisting of (i) an initial Tranche 1 Loan, which was funded in the amount of $25.0 million on the Effective Date and (ii) the Tranche 2 Loan and Tranche 3 Loan, respectively, which would become available to the Company upon our satisfaction of certain terms and conditions set forth in the Loan and Security Agreement.
At the time of termination, approximately $106.6 million remained available for issuance pursuant to the 2021 Sales Agreement. On November 9, 2020, we entered into the Equity Line Agreement with Energy Capital, pursuant to which Energy Capital committed to purchase up to an aggregate of $12.0 million of shares of our newly designated Series B convertible Preferred Stock (“Series B Preferred Stock”), at our request from time to time during the 24-month term of the Equity Line Agreement.
On March 31, 2023 (6:00 am Japan Standard Time on April 1, 2023), the PHC Exchange was consummated, and the Company issued the PHC Exchange Warrant in consideration for the cancellation of the PHC Notes. On November 9, 2020, we entered into the Equity Line Agreement with Energy Capital, pursuant to which Energy Capital committed to purchase up to an aggregate of $12.0 million of shares of our newly designated Series B convertible Preferred Stock (“Series B Preferred Stock”), at our request from time to time during the 24-month term of the Equity Line Agreement.
The PHC Exchange Warrant was recorded in equity based on its fair value of $48.6 million. On September 8, 2023, we entered into the Loan and Security Agreement and issued the Tranche 1 Warrants to acquire an aggregate of 832,362 shares of common stock at an exercise price of $0.6007 per share.
All or any part of the Exchange Warrant is exercisable by PHC at any time and from time to time. On September 8, 2023, we entered into the Loan and Security Agreement with several lenders and issued the Tranche 1 Warrants to acquire an aggregate of 832,362 shares of common stock at an exercise price of $0.6007 per share.
As of December 31, 2023, we had cash, cash equivalents and marketable securities of $109.5 million. During 2023, we undertook a number of financing transactions designed to strengthen our balance sheet, including the repayment of our 2023 Notes, the issuance of additional pre-funded warrant to PHC for cash in a private placement, the exchange of our PHC Notes for a newly issued pre-funded warrant, the exchange of a portion of our 2025 Notes for cash and newly issued common stock in a series of private exchanges, the entry into a new term loan facility and the issuance of shares of common stock pursuant to an at the market offering program.
As of December 31, 2024, the Company had unrestricted cash and cash equivalents of $74.6 million. In the past two years, we have taken a number of measures to strengthen our financial position, including the repayment of our 2023 Notes, the sale of common stock in a registered direct offering and related issuance of warrants, the issuance of a pre-funded warrant to PHC for cash in a private placement, the exchange of our PHC Notes for a newly issued pre-funded warrant, the exchange of a portion of our 2025 Notes for cash and common stock in a series of private exchanges and the repayment of the remaining 2025 Notes, the entry into a term loan facility and the issuance of shares of common stock pursuant to an at the market offering program.
In both the United States and our overseas markets, we have entered into strategic partnerships and distribution agreements that allow third party collaborators with direct sales forces and established distribution systems to market and promote Eversense. United States Development and Commercialization of Eversense In 2016, we completed our PRECISE II pivotal clinical trial in the United States.
In both the United States and our overseas markets, we have entered into strategic partnerships and distribution agreements that allow third party collaborators with direct sales forces and established distribution systems to market and promote Senseonics CGM systems, including 90-day Eversense, Eversense XL, Eversense E3, Eversense 365 and future generation products.
We received aggregate gross proceeds of $15.0 million in the transaction, before deducting private placement expenses payable by us. On September 8, 2023, we entered into a loan agreement (the “Loan and Security Agreement”) with several institutions (collectively, the “Lenders") and Hercules Capital, Inc.
The offering closed on October 28, 2024, and the Company received proceeds of approximately $14.8 million after payment of fees to the placement agent, but before payment of any additional expenses incurred by the Company in connection with the transaction. On September 8, 2023, we entered into a loan agreement (the “Loan and Security Agreement”) with several institutions (collectively, the “Lenders") and Hercules Capital, Inc.
We engage a third-party valuation specialist to perform the valuation using the binomial option pricing model. 75 Results of Operations Comparison of the Years Ended December 31, 2023 and 2022 The following table sets forth our results of operations for the years ended December 31, 2023 and 2022. 2023 2022 Period Change (in thousands) (in thousands) Revenue, net $ 1,655 $ 656 $ 999 Revenue, net - related parties 20,735 15,733 5,002 Total revenue 22,390 16,389 6,001 Cost of sales 19,299 13,663 5,636 Gross profit 3,091 2,726 365 Expenses: Research and development expenses 48,752 39,719 9,033 Selling, general and administrative expenses 29,942 31,634 (1,692) Operating loss (75,603) (68,627) (6,976) Other income (expense), net: Interest income 5,362 1,824 3,538 Gain on fair value adjustment of option — 43,745 (43,745) Exchange related gain, net 14,109 — 14,109 Loss on extinguishment of debt and option — (101) 101 Interest expense (11,110) (18,703) 7,593 Gain on change in fair value of derivatives 6,648 184,221 (177,573) Impairment cost — (138) 138 Other income (expense) 202 (102) 304 Total other income, net 15,211 210,746 (195,535) Net (Loss) Income $ (60,392) $ 142,119 $ (202,511) Components of Results of Operations Total revenue Our total net revenue increased to $22.4 million for the year ended December 31, 2023, compared to $16.4 million for the year ended December 31, 2022, an increase of $6.0 million.
We engage a third-party valuation specialist to perform the valuation using the binomial option pricing model. 74 Results of Operations Comparison of the Years Ended December 31, 2024 and 2023 The following table sets forth our results of operations for the years ended December 31, 2024 and 2023. 2024 2023 Period Change (in thousands) (in thousands) Revenue, net $ 3,973 $ 1,655 $ 2,318 Revenue, net - related parties 18,499 20,735 (2,236) Total revenue 22,472 22,390 82 Cost of sales 21,939 19,299 2,640 Gross profit 533 3,091 (2,558) Expenses: Research and development expenses 41,144 48,752 (7,608) Selling, general and administrative expenses 34,231 29,942 4,289 Operating loss (74,842) (75,603) 761 Other income (expense), net: Interest income 4,502 5,362 (860) Exchange related gain, net — 14,109 (14,109) Interest expense (8,437) (11,110) 2,673 Gain on change in fair value of derivatives 102 6,648 (6,546) Other income 59 202 (143) Total other (expense) income, net (3,774) 15,211 (18,985) Net Loss $ (78,616) $ (60,392) $ (18,224) Components of Results of Operations Total revenue Our total net revenue increased to $22.5 million for the twelve months ended December 31, 2024, compared to $22.4 million for the year ended December 31, 2023, an increase of $0.1 million.
In June 2022, we affixed the CE mark to the Eversense E3 CGM system and Ascensia Diabetes Care Holdings AG (“Ascensia”) began commercialization in select markets in Europe during the third quarter of 2022. In June 2018, the U.S. Food and Drug Administration (“FDA”), approved the 90-day Eversense CGM system for distribution throughout the United States.
In February 2022, the 180-day Eversense E3 CGM system was approved by the FDA and Ascensia began commercializing Eversense E3 in the United States in the second quarter of 2022. In June 2022, we affixed the CE mark to the Eversense E3 CGM system and Ascensia began commercialization in select markets in Europe during the third quarter of 2022.
The change was primarily due to a $177.6 million reduction in gains on the fair value of derivatives primarily driven by debt settlement and the decrease in our stock price, and a $43.7 million reduction in the gain on fair value of options primarily driven by the decrease in our stock price, partially offset by a $3.5 million increase in interest income, a $7.6 million decrease in interest expense, a $14.1 million gain on exchange of debt, and $0.6 million increase in other income (expense) items, net. Liquidity and Capital Resources Since our inception, we have incurred significant net losses and expect to incur additional losses in the near future.
The decrease in other income was primarily due to a $14.1 million reduction in exchange related gains, net, a $6.5 million reduction in gain on the change in the fair value of derivatives driven by the decrease in our stock price, and $1.0 million reduction in interest and other income.
On March 31, 2023, the exchange was consummated, and we issued the PHC Exchange Warrant in consideration for the cancellation of the PHC Notes. The PHC Exchange Warrant is a “pre-funded” warrant with a nominal exercise price of $0.001 per PHC Exchange Warrant Share.
The PHC Exchange Warrant is a “pre-funded” warrant with a nominal exercise price of $0.001 per PHC Exchange Warrant Share.
These activities, including our ongoing focus to grow covered lives through positive insurance payor policy decisions and continued development of Eversense 365-day product in the United States, will require significant uses of working capital through 2024 and beyond. Management has concluded that based on our current operating plans, existing cash and cash equivalents and cash flows from our future operations will be sufficient to meet our anticipated operating needs through twelve months after issuance of the financial statements.
These activities, including our ongoing focus to grow covered lives through positive insurance payor policy decisions and continued development of Eversense 365-day product in the United States, will require significant uses of working capital through 2025 and beyond.
We are generally paid for our sales directly to the Customers, regardless of whether or not the Customers resell the products to health care providers and patients. Revenue from product sales is recognized at a point in time when the Customers obtain control of our product based upon the delivery terms as defined in the contract at an amount that reflects the consideration which we expect to receive in exchange for the product.
Actual results and outcomes could differ from these estimates and assumptions. Revenue We generate a significant portion of product revenue from sales of the Eversense system and related components and supplies to Ascensia, through the Commercialization Agreement, who then resells the products to health care providers and patients. Revenue from product sales to Ascensia is recognized at a point in time when the Ascensia obtains control of our product based upon the delivery terms as defined in the contract at an amount that reflects the consideration which we expect to receive in exchange for the product.
In April 2022, we repaid the outstanding principal and accrued interest in full. Convertible Notes The following table summarizes our outstanding senior convertible note obligations at December 31, 2023: Aggregate Initial Conversion Conversion Price Convertible Issuance Principal Maturity Rate per $1,000 per Share of Note Date Coupon (in millions) Date Principal Amount Common Stock 2025 Notes July 1, 2019 5.25% $ 20.4 January 15, 2025 757.5758 $ 1.32 See Note 13 in the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report for further discussion of the 2025 Notes. Funding Requirements and Outlook Our ability to generate revenue and achieve profitability depends on the successful commercialization and adoption of our Eversense CGM systems by diabetes patients and healthcare providers, along with future product development, regulatory approvals, certifications and post-approval requirements.
See Note 13 in the accompanying notes to our consolidated financial statements included elsewhere in this Annual Report for further discussion of the 2025 Notes. Funding Requirements and Outlook Our ability to generate revenue and achieve profitability depends on the successful commercialization and adoption of our Eversense CGM systems by diabetes patients and healthcare providers, along with future product development, regulatory approvals, certifications and post-approval requirements.
These transactions are described in greater detail below. On March 13, 2023, we issued and sold to PHC in a private placement a warrant (the “Purchase Warrant”) to purchase an aggregate of 15,425,750 shares of common stock (the “Purchase Warrant Shares”). The purchase price of the Purchase Warrant was approximately $0.97 per Purchase Warrant Share.
At the time of termination, approximately $106.6 million remained available for issuance pursuant to the 2021 Sales Agreement. On March 13, 2023, we issued and sold to PHC in a private placement a warrant (the “Purchase Warrant”) to purchase an aggregate of 15,425,750 shares of common stock (the “Purchase Warrant Shares”).
The Tranche 1 Warrants may be exercised through the earlier of (i) September 8, 2030 and (ii) the consummation of certain acquisition transactions involving the company, as set forth in the warrant agreement. The Tranche 1 Warrants were recorded in equity based on their fair value of $0.4 million .
The Tranche 1 Warrants may be exercised through the earlier of (i) September 8, 2030 and (ii) the consummation of certain acquisition transactions involving the company, as set forth in the warrant agreement. On January 2, 2024, we issued the Tranche 2 Warrants to acquire an aggregate of 347,887 shares at an exercise price of $0.5749 per share.
Depending on the variable consideration, we develop 74 estimates for the expected value based on the terms of the agreements, historical data, geographic mix, reimbursement rates, and market conditions. Contract assets consist of trade receivables and unbilled receivables from customers and are recorded at net realizable value.
Estimating variable consideration and the related constraint requires the use of significant management judgment. Depending on the variable consideration, we develop estimates for the expected value based on the terms of the agreements, historical data, geographic mix, reimbursement rates, and market conditions.
In March 2022, we extended the ongoing ENHANCE clinical study to evaluate the safety and accuracy of the Eversense 365 System for a period of up to one year in the United States. In mid-2023, the data gathered in this trial was used to submit an application to the FDA for the integrated continuous glucose monitoring (“iCGM”) designation.
In March 2022, we extended the ongoing ENHANCE clinical study to evaluate the safety and accuracy of the Eversense 365 System for a period of up to one year in the United States. In September 2022, we completed enrollment of the ENHANCE study and the last patient of the adult cohort completed the study in the third quarter of 2023.
In 2022, we submitted and received approval for an investigational device exemption (“IDE”) for an extension of the trial to allow for pediatric patients and we began enrolling patients in the first half of 2023.
In November 2022, we submitted and in the first quarter of 2023 we received approval of an investigational device enrollment (“IDE”) for the enrollment of a pediatric cohort in the ENHANCE study.
We expect that this data will support an FDA submission to be made in the coming weeks for a new product with a target 365-day duration and once per week calibration. European Commercialization of Eversense In September 2017, we affixed the CE mark for Eversense XL, which permits the product to be sold freely in any part of the European Economic Area (“EEA”).
Data gathered from this first-in-human testing will be utilized for an IDE submission anticipated in the second half of 2025. European Commercialization of Eversense In September 2017, we affixed the CE mark for Eversense XL, which permits the product to be sold freely in any part of the European Economic Area (“EEA”).
The Highbridge Warrants are exercisable until April 24, 2030. During the year ended December 31, 2021, the warrant holders exercised 1,750,000 warrants.
The Highbridge Warrants are exercisable until April 24, 2030. During the year ended December 31, 2021, the warrant holders exercised 1,750,000 warrants. On March 13, 2023, we issued and sold to PHC a Purchase Warrant to purchase 15,425,750 shares of common stock for $15.0 million.
Unbilled receivables relate to the revenue share variable consideration from the Commercialization Agreement. Derivative Financial Instruments In connection with our issuance of the convertible senior subordinated notes due 2023, or the 2023 Notes in January 2018, we bifurcated the embedded conversion option, along with the interest make-whole provision and make-whole fundamental change provision, and recorded the embedded conversion option as a derivative liability in our consolidated balance sheets in accordance with ASC Topic 815, Derivatives and Hedging.
Our estimates are based on information known at the time and include factors such as anticipated future usage and sales, potential for external unfavorable conditions such as import holds or quality issues, and planned product upgrades. However, if actual product conditions differ from our assumptions, additional inventory adjustments that would increase cost of sales could be required. Derivative Financial Instruments In connection with our issuance of the convertible senior subordinated notes due 2023, or the 2023 Notes in January 2018, we bifurcated the embedded conversion option, along with the interest make-whole provision and make-whole fundamental change provision, and recorded the embedded conversion option as a derivative liability in our consolidated balance sheets in accordance with ASC Topic 815, Derivatives and Hedging.
The decrease was primarily the result of a $1.0 million decrease in personnel costs, a $0.8 million decrease in other general and administrative costs to include recruiting and associated employee overhead, local tax expenses, and legal expenses, partially offset by a $0.1 million increase in other selling and marketing costs. Total other income, net Total other income, net, was $15.2 million for the year ended December 31, 2023, compared to $210.7 million for the year ended December 31, 2022, a reduction of $195.5 million.
These increases were partially offset by a $0.4 million reduction in insurance costs and other sales and marketing expenses. Total other (expense) income, net Total other expense, net was $(3.8) million for the twelve months ended December 31, 2024, compared to other income, net of $15.2 million for the twelve months ended December 31, 2023, a decrease in other income of $19.0 million.
The ENHANCE pivotal study for the Eversense 365-day system completed enrollment, the last patient of the adult cohort completed the study, and we completed our analysis of the data. Based on this analysis, we determined to advance to the next generation sensor platform as the underlying technology used in the 365-day and future products.
Based on the analysis of the ENHANCE Pivotal study data, the decision was made to advance to the next generation sensor platform as the underlying technology used in the 365-day and future products. In May 2024, this data supported an FDA 510(k) submission for a new product with a 365-day duration and once per week calibration.
Sales of the Eversense system are widely dependent on the ability of patients to obtain coverage and adequate reimbursement from third-party payors or government agencies. We leverage and target regions where we have coverage decisions for patient device use and provider insertion and removal procedure payment.
In addition, we sell our product through a consignment model through arrangements with our network of healthcare professionals. Sales of the Eversense system are widely dependent on the ability of patients to obtain coverage and adequate reimbursement from third-party payors or government agencies.
This increase was primarily the result of increased commercial activities driving new patients and awareness and a full year of Eversense E3 revenue in 2023, partially offset by slightly lower sales outside of the United States during 2023. Cost of sales and gross profit Our cost of sales increased to $19.3 million for the year ended December 31, 2023, compared to $13.7 million for the year ended December 31, 2022.
Higher sales within the United States of $1.2 million was largely offset by $1.1 million in lower sales outside of the United States primarily due to reduced inventory levels. Cost of sales and gross profit Our cost of sales were $21.9 million for the twelve months ended December 31, 2024 compared to $19.3 million for the twelve months ended December 31, 2023, an increase of $2.6 million.
On November 7, 2022, Energy Capital exercised in full its right to purchase $12.0 million of Series B Preferred Stock. Concurrently with entry into the Equity Line Agreement, we issued a warrant to Energy Capital, exercisable beginning May 9, 2021, to purchase up to 10,000,000 shares of common stock at an exercise price of $0.3951 per share, (the “Warrant”).
On November 7, 2022, Energy Capital exercised in full its right to purchase $12.0 million of Series B Preferred Stock.
We incurred total net (loss) income of ($60.4) million and $142.1 million for the years ended December 31, 2023 and 2022, respectively. Positive net income during 2022 was substantially the result of fair value gains due to embedded derivatives in our convertible notes. As of December 31, 2023, we had an accumulated deficit of $869.3 million.
We incurred total net loss of $(78.6) million and $(60.4) million for the years ended December 31, 2024 and 2023, respectively. As of December 31, 2024, we had an accumulated deficit of $947.9 million. To date, we have financed our operations primarily through sales of our equity securities and debt financings.
Product conformity guarantees do not create additional performance obligations and are accounted for as warranty obligations in accordance with guarantee and loss contingency accounting guidance. In addition, we sell small quantities of our products directly to healthcare provider locations within the United States.
Product conformity guarantees do not create additional performance obligations and are accounted for as warranty obligations in accordance with guarantee and loss contingency accounting guidance. The consideration we expect to receive includes estimates of variable consideration for which reserves are established that is primarily the result of variable consideration such as patient assistance program rebates, prompt-pay discounts, tier-volume price discounts and for the Commercialization Agreement, revenue share.
We expect that this data will support an FDA submission to be made in the coming weeks for a new product with a target 365-day duration and once per week calibration. We are in the early commercialization stages of the Eversense brand and are focused on driving awareness of our CGM system amongst intensively managed patients and their healthcare providers.
We have been working with payors to transition their policies to Eversense 365 and have confirmed immediate coverage policy transition from select payors. We are in the early commercialization stages of the Eversense brand and are focused on driving awareness of our CGM system amongst people with diabetes and their healthcare providers.
The increase was primarily due to investments for next generation technologies including a $4.0 million increase in clinical studies activities, an increase of $2.2 million in personnel related costs due to the expansion of our research and development workforce, an increase of 76 $1.4 million for consulting and other support services, an increase of $1.0 million in design and prototype development costs, and an increase of $0.5 million in other administrative R&D expenses. Selling, general and administrative expenses Selling, general and administrative expenses were $29.9 million for the year ended December 31, 2023, compared to $31.6 million for the year ended December 31, 2022, a decrease of $1.7 million.
These decreases were partially offset by a $3.2 million increase in personnel costs to support our development projects, $1.8 million in 365-day product manufacturing costs incurred prior to FDA approval, a $0.8 million increase in contract fabrication costs and a $0.2 million increase in facilities costs. Selling, general and administrative expenses Selling, general and administrative expenses were $34.2 million for the twelve months ended December 31, 2024, compared to $29.9 million for the twelve months ended December 31, 2023, an increase of $4.3 million.
In December 2021, CMS released its Calendar Year 2022 Medicare 71 Physician Fee Schedule that updated global payments for the device cost and procedure fees. In July 2022, CMS provided temporary G-codes to enable immediate access to Eversense E3 for all eligible Medicare beneficiaries.
CMS provided G-codes to enable immediate access to Eversense 365 for all eligible Medicare beneficiaries.
The number of shares for which the Tranche 1 Warrants are exercisable and the associated exercise price are subject to certain customary proportional adjustments for fundamental events, including stock splits and reverse stock splits, as set forth in the warrant agreement. On January 2, 2024, we issued the Tranche 2 Warrants to acquire an aggregate of 347,887 shares at an exercise price of $0.5749 per share.
The Tranche 2 Warrants may be exercised through the earlier of (i) January 2, 2031 and (ii) the consummation of certain acquisition transactions involving the company, as set forth in the warrant agreement. 78 On October 24, 2024, in connection with the registered direct offering described above, the Company issued to the investors in the offering the PP Warrants to purchase an aggregate of 45,714,286 shares of common stock at an exercise price of $0.35 per share.