Biggest changeThe increase of $14.1 million was due to the following: • an increase of $4.7 million in external expenses related to our AATD program, WVE-006 (RNA editing); • an increase of $5.2 million in external expenses related to our DMD programs, including WVE-N531 (splicing); • an increase of $5.1 million in external expenses related to our HD programs, including WVE-003 (silencing); • an increase of $1.6 million in other research and development expenses, including INHBE, RNA editing, PRISM, and other internal and external research and development expenses that are not allocated on a program-by-program basis. or are related to other discovery and development programs, and the identification of potential drug discovery candidates, mainly due to increases in compensation-related expenses and facilities-related expenses, partially offset by decreases in other external research and development expenses; and • a decrease of $2.5 million in external expenses related to our discontinued ALS and FTD program, WVE-004.
Biggest changeThe increase of $23.1 million was due to the following: • an increase of $6.4 million in external expenses related to our INHBE program, including WVE-007 (RNAi); • a decrease of $5.9 million in external expenses related to our AATD program, WVE-006 (RNA editing); • an increase of $3.9 million in external expenses related to our DMD program, including WVE-N531 (splicing); • a decrease of $9.1 million in external expenses related to our HD program, including WVE-003 (silencing); and • an increase of $27.8 million in other research and development expenses, including PNPLA3, additional preclinical programs, PRISM, and internal and external research and development expenses that are not allocated on a program-by-program basis or are related to other discovery and development programs, and the identification of potential drug discovery candidates.
In addition, the Company considers whether the customer can benefit from a promise for its intended purpose without the receipt of the remaining promise, whether the value of the promise is dependent on the unsatisfied promise, whether there are other vendors that could provide the remaining promise, and whether it is separately identifiable from the remaining promise.
In addition, the Company considers whether the customer can benefit from a promise for its intended purpose without the receipt of the remaining promise, whether the value of the promise is dependent on the unsatisfied promise, whether there are other vendors that could provide the remaining promise, and whether it is separately identifiable from the remaining promise.
We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates under different assumptions and conditions. 101 Revenue Recognition The Company recognizes revenue in accordance with Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”).
We evaluate our estimates and assumptions on an ongoing basis. Our actual results may differ from these estimates under different assumptions and conditions. Revenue Recognition The Company recognizes revenue in accordance with Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”).
In addition, we may elect to raise additional funds before we need them if the conditions for raising capital are 98 favorable due to market conditions or strategic considerations, even if we expect we have sufficient funds for our current or future operating plans.
In addition, we may elect to raise additional funds before we need them if the conditions for raising capital are favorable due to market conditions or strategic considerations, even if we expect we have sufficient funds for our current or future operating plans.
Additionally, there were $1.1 million in net proceeds from our "at-the-market" equity program. Funding Requirements We expect to continue to incur significant expenses in connection with our ongoing research and development activities and our internal cGMP manufacturing activities.
Additionally, there were $3.1 million in net proceeds from our "at-the-market" equity program. Funding Requirements We expect to continue to incur significant expenses in connection with our ongoing research and development activities and our internal cGMP manufacturing activities.
We base our estimates on communications with internal study managers, our knowledge of the ongoing and past work at the CROs and CMOs, and communications and reporting from our CROs and CMOs, where applicable. 103
We base our estimates on communications with internal study managers, our knowledge of the ongoing and past work at the CROs and CMOs, and communications and reporting from our CROs and CMOs, where applicable.
Research and Development Expenses Research and development expenses consist primarily of costs incurred for our research activities, including our discovery efforts, and the development of our product candidates, which include: • compensation-related expenses, including employee salaries, bonuses, share-based compensation expense and other related benefits expenses for personnel in our research and development organization; • expenses incurred under agreements with third parties, including CROs that conduct research, preclinical and clinical activities on our behalf, as well as CMOs that manufacture drug product for use in our preclinical studies and clinical trials; • expenses incurred related to our internal manufacturing of drug substance for use in our preclinical studies and clinical trials; • expenses related to compliance with regulatory requirements; • expenses related to third-party consultants; • research and development supplies and services expenses; and • facility-related expenses, including rent, maintenance and other general operating expenses.
Research and Development Expenses Research and development expenses consist primarily of costs incurred for our research activities, including development of our RNA medicines platform, our discovery efforts, and the development of our product candidates, which include: • compensation-related expenses, including employee salaries, bonuses, share-based compensation expense and other related benefits expenses for personnel in our research and development organization; • expenses incurred under agreements with third parties, including CROs that conduct research, preclinical and clinical activities on our behalf, as well as CMOs that manufacture drug product for use in our preclinical studies and clinical trials; • expenses incurred related to our internal manufacturing of drug substance for use in our preclinical studies and clinical trials; • expenses related to compliance with regulatory requirements; • expenses related to third-party consultants; • research and development supplies and services expenses; and • facility-related expenses, including rent, maintenance and other general operating expenses.
The 102 Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.
The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.
As of December 31, 2024 and 2023, we have recorded a full valuation allowance against our net operating loss carryforwards and federal and state tax credits in all jurisdictions due to uncertainty regarding future taxable income.
As of December 31, 2025 and 2024, we have recorded a full valuation allowance against our net operating loss carryforwards and federal and state tax credits in all jurisdictions due to uncertainty regarding future taxable income.
We do not currently have any committed external source of funds, except for possible future payments from GSK under our collaborations with them.
We do not currently have any committed external source of funds, except for possible future payments from GSK under our collaboration with them.
Results of Operations In this section, we discuss the results of our operations for the year ended December 31, 2024 compared to the year ended December 31, 2023 and for the year ended December 31, 2023 compared to the year ended December 31, 2022 .
Results of Operations In this section, we discuss the results of our operations for the year ended December 31, 2025 compared to the year ended December 31, 2024 and for the year ended December 31, 2024 compared to the year ended December 31, 2023 .
Comparison of the Year Ended December 31, 2024 to the Year Ended December 31, 2023 The following table summarizes our results of operations for 2024 and 2023: For the Year Ended December 31, 2024 2023 Change (in thousands) Revenue $ 108,302 $ 113,305 $ (5,003 ) Operating expenses: Research and development 159,682 130,009 29,673 General and administrative 59,023 51,292 7,731 Total operating expenses 218,705 181,301 37,404 Loss from operations (110,403 ) (67,996 ) (42,407 ) Total other income, net 13,395 9,806 3,589 Loss before income taxes (97,008 ) (58,190 ) (38,818 ) Income tax benefit (provision) — 677 (677 ) Net loss $ (97,008 ) $ (57,513 ) $ (39,495 ) Revenue Revenue for the years ended December 31, 2024 and 2023, was $108.3 million and $113.3 million, respectively, and was earned under the GSK Collaboration Agreement and the Takeda Collaboration Agreement. 95 The $5.0 million decrease in revenue year over year was driven by the revenue recognized under the GSK Collaboration Agreement, partially offset by the increase in revenue recognized under the Takeda Collaboration Agreement.
Comparison of the Year Ended December 31, 2024 to the Year Ended December 31, 2023 The following table summarizes our results of operations for 2024 and 2023: For the Year Ended December 31, 2024 2023 Increase (Decrease) (in thousands) Revenue $ 108,302 $ 113,305 $ (5,003 ) Operating expenses: Research and development 159,682 130,009 29,673 General and administrative 59,023 51,292 7,731 Total operating expenses 218,705 181,301 37,404 Loss from operations (110,403 ) (67,996 ) 42,407 Total other income, net 13,395 9,806 3,589 Loss before income taxes (97,008 ) (58,190 ) 38,818 Income tax benefit — 677 (677 ) Net loss $ (97,008 ) $ (57,513 ) $ 39,495 Revenue Revenue for the years ended December 31, 2024 and 2023, was $108.3 million and $113.3 million, respectively, and was earned under the GSK Collaboration Agreement and the Takeda Collaboration Agreement.
Financing Activities During 2024, net cash provided by financing activities was $253.9 million, which was primarily due to the $215.8 million in net proceeds from the September 2024 Offering of ordinary shares and the 2024 Pre-Funded Warrants; as well as the $14.0 million in net proceeds from the January 2024 exercise of the underwriters’ option to purchase an additional 3,000,000 shares under the December 2023 Offering.
During 2024, net cash provided by financing activities was $253.9 million, primarily due to the $215.8 million in net proceeds from the September 2024 underwritten public offering of ordinary shares and the 2024 Pre-Funded Warrants (as defined below) (the "September 2024 Offering"); as well as the $14.0 million in net proceeds from the January 2024 exercise of the underwriters’ option to purchase an additional 3,000,000 shares under the December 2023 Offering.
Our future capital requirements for our therapeutic programs will depend on many factors, including: • the progress, results and costs of conducting research and continued preclinical and clinical development for our therapeutic programs and future potential pipeline candidates; • the number and characteristics of product candidates and programs that we pursue; • the cost of manufacturing clinical supplies of our product candidates; • whether and to what extent milestone events are achieved under our collaborations with Takeda and GSK or any potential future licensee or collaborator; • the costs, timing and outcome of regulatory review of our product candidates; • our ability to obtain marketing approval for our product candidates; 100 • the impacts of local and global health epidemics, the conflict involving Russia and Ukraine, the conflict in the Middle East, global economic uncertainty, volatility in inflation, volatility in interest rates or market disruptions on our business; • the costs and timing of future commercialization activities, including manufacturing, marketing, sales and distribution, for any of our product candidates for which we receive marketing approval; • market acceptance of our product candidates, to the extent any are approved for commercial sale, and the revenue, if any, received from commercial sales of our product candidates for which we receive marketing approval; • the costs and timing of preparing, filing and prosecuting patent applications, maintaining and enforcing our intellectual property rights and defending any intellectual property-related claims; • the effect of competing technological and market developments; and • the extent to which we acquire or invest in businesses, products and technologies, including entering into licensing or collaboration arrangements for product candidates.
Our future capital requirements for our therapeutic programs will depend on many factors, including: • the progress, results and costs of conducting research and continued preclinical and clinical development for our therapeutic programs and future potential pipeline candidates; • the number and characteristics of product candidates and programs that we pursue; • the cost of manufacturing clinical supplies of our product candidates; • whether and to what extent milestone events are achieved under our collaboration with GSK or any potential future licensee or collaborator; • the costs, timing and outcome of regulatory review of our product candidates; • our ability to obtain marketing approval for our product candidates; • the impacts of local and global health epidemics, geopolitical conflicts, global economic uncertainty, tariffs, rising inflation, rising interest rates or market disruptions on our business; • the costs and timing of future commercialization activities, including manufacturing, marketing, sales and distribution, for any of our product candidates for which we receive marketing approval; • market acceptance of our product candidates, to the extent any are approved for commercial sale, and the revenue, if any, received from commercial sales of our product candidates for which we receive marketing approval; • the costs and timing of preparing, filing and prosecuting patent applications, maintaining and enforcing our intellectual property rights and defending any intellectual property-related claims; • the effect of competing technological and market developments; and • the extent to which we acquire or invest in businesses, products and technologies, including entering into licensing or collaboration arrangements for product candidates.
Furthermore, we anticipate that our expenses will continue to vary if and as we: • continue to conduct our clinical trials evaluating our product candidates in patients; • conduct research and preclinical development of discovery targets and advance additional programs into clinical development; • file clinical trial applications with global regulatory agencies and conduct clinical trials for our programs; • make strategic investments in continuing to innovate our research and development platform, PRISM, and in optimizing our manufacturing processes and formulations; • maintain our manufacturing capabilities through our internal facility and our CMOs; • maintain our intellectual property portfolio and consider the acquisition of complementary intellectual property; • seek and obtain regulatory approvals for our product candidates; • respond to the impacts of local and global health epidemics, the conflict involving Russia and Ukraine, the conflict in the Middle East, global economic uncertainty, volatility in inflation, volatility in interest rates or market disruptions on our business; and • establish and build capabilities to market, distribute and sell our product candidates.
Furthermore, we anticipate that our expenses will continue to vary if and as we: • continue to conduct our clinical trials evaluating our product candidates in patients; • conduct research and preclinical development of discovery targets and advance additional programs into clinical development; • file clinical trial applications with global regulatory agencies and conduct clinical trials for our programs; • make strategic investments in continuing to innovate our research and development platform, PRISM, and in optimizing our manufacturing processes and formulations; • maintain our manufacturing capabilities through our internal facility and our CMOs; • maintain our intellectual property portfolio and consider the acquisition of complementary intellectual property; • seek and obtain regulatory approvals for our product candidates; • respond to the impacts of local and global health epidemics, geopolitical conflicts, global economic uncertainty, tariffs, rising inflation, rising interest rates or market disruptions on our business; and • establish and build capabilities to market, distribute and sell our product candidates.
Our operating lease commitments as of December 31, 2024 total $29.1 million, of which $9.6 million is related to payments in 2025 and approximately $19.5 million is related to payments beyond 2025.
Our operating lease commitments as of December 31, 2025 total $19.5 million, of which $9.6 million is related to payments in 2026 and approximately $9.9 million is related to payments beyond 2026.
Income Tax Benefit (Provision) During the years ended December 31, 2023 and 2022, we recorded an income tax benefit of $0.7 million and an income tax provision of $0.7 million, respectively.
Income Tax Benefit During the years ended December 31, 2024 and 2023, we recorded no income tax benefit or provision and an income tax benefit of $0.7 million, respectively.
For the three months ended December 31, 2024, we received $5.2 million in net proceeds from sales under our “at-the-market" equity program. Adequate additional financing may not be available to us on acceptable terms, or at all.
For the twelve months ended December 31, 2025, we received $94.6 million in net proceeds from sales under our “at-the-market" equity program. Adequate additional financing may not be available to us on acceptable terms, or at all.
These expenses, which are not allocated on a program-by-program basis, are included in the “Other research and development expenses (1) , including INHBE, RNA 94 editing, PRISM, others” category along with other external expenses related to our discovery and development programs, as well as platform development and identification of potential drug discovery candidates.
These expenses, which are not allocated on a program-by-program basis, are included in the “Other research and development expenses (1) , including PNPLA3, additional preclinical programs, PRISM” category along with other external expenses related to our discovery and development programs, as well as platform development and identification of potential drug discovery candidates.
Research and Development Expenses The following table summarizes our research and development expenses incurred for the years ended December 31, 2024 and 2023: For the Year Ended December 31, 2024 2023 Change (in thousands) AATD program $ 11,666 $ 8,453 $ 3,213 DMD programs 15,536 7,808 7,728 HD programs 11,790 13,086 (1,296 ) Other research and development expenses (1) , including INHBE, RNA editing, PRISM, others 119,976 91,617 28,359 ALS and FTD programs (discontinued) 714 9,045 (8,331 ) Total research and development expenses $ 159,682 $ 130,009 $ 29,673 (1) Includes expenses related to other research and development programs, identification of potential drug discovery candidates, compensation-related expenses, internal manufacturing expenses, equipment repairs and maintenance expense, facility-related expenses, and other operating expenses, which are not allocated to specific programs.
Research and Development Expenses The following table summarizes our research and development expenses incurred for the years ended December 31, 2024 and 2023: For the Year Ended December 31, 2024 2023 Increase (Decrease) (in thousands) INHBE program $ 9,294 $ 229 $ 9,065 AATD program 11,666 8,453 3,213 DMD program 15,536 7,808 7,728 HD program 11,790 13,086 (1,296 ) Other research and development expenses(1), including PNPLA3, additional preclinical programs, PRISM 111,396 100,433 10,963 Total research and development expenses $ 159,682 $ 130,009 $ 29,673 (1) Includes expenses related to other research and development programs, identification of potential drug discovery candidates, compensation-related expenses, internal manufacturing expenses, equipment repairs and maintenance expense, facility-related expenses, and other operating expenses, which are not allocated to specific programs.
The increase of $29.7 million was due to the following: • an increase of $3.2 million in external expenses related to our AATD program, WVE-006 (RNA editing); • an increase of $7.7 million in external expenses related to our DMD programs, including WVE-N531 (splicing); • a decrease of $1.3 million in external expenses related to our HD programs, including WVE-003 (silencing); • an increase of $28.4 million in other research and development expenses, including INHBE, RNA editing, PRISM, and other internal and external research and development expenses that are not allocated on a program-by-program basis or are related to other discovery and development programs, and the identification of potential drug discovery candidates, mainly due to increases in compensation-related expenses and facilities-related expenses, partially offset by decreases in other external research and development expenses; and • a decrease of $8.3 million in external expenses related to our discontinued ALS and FTD program, WVE-004.
The increase of $29.7 million was due to the following: • an increase of $9.1 million in external expenses related to our INHBE program, including WVE-007 (RNAi); • an increase of $3.2 million in external expenses related to our AATD program, WVE-006 (RNA editing); • an increase of $7.7 million in external expenses related to our DMD program, including WVE-N531 (splicing); • a decrease of $1.3 million in external expenses related to our HD program, including WVE-003 (silencing); and • an increase of $11.0 million in other research and development expenses, including PNPLA3, additional preclinical programs, PRISM, and internal and external research and development expenses that are not allocated on a program-by-program basis or are related to other discovery and development programs, and the identification of potential drug discovery candidates.
Through December 31, 2024, we have received an aggregate of approximately $1,578.4 million in net proceeds from these transactions, consisting of $977.8 million in net proceeds from public and other registered offerings of our ordinary shares and other securities, $511.3 million from our collaborations and $89.3 million in net proceeds from private placements of our debt and equity securities.
Through December 31, 2025, we have received an aggregate of approximately $2,076.7 million in net proceeds from these transactions, consisting of $1,450.5 million in net proceeds from public and other registered offerings of our ordinary shares and other securities, $536.9 million from our collaborations and $89.3 million in net proceeds from private placements of our debt and equity securities.
As of December 31, 2024, we had cash and cash equivalents of $302.1 million, restricted cash of $3.8 million and an accumulated deficit of $1,121.9 million. We expect that our existing cash and cash equivalents will be sufficient to fund our operations for at least the next twelve months.
As of December 31, 2025, we had cash and cash equivalents of $602.1 million, restricted cash of $3.8 million and an accumulated deficit of $1,326.2 million. We expect that our existing cash and cash equivalents will be sufficient to fund our operations for at least the next twelve months from the issuance date of these financial statements.
General and administrative expenses also include legal fees; expenses associated with being a public company; professional fees for accounting, auditing, tax and consulting services; insurance costs; travel expenses; other operating costs; and facility-related expenses.
General and administrative expenses also include legal fees; expenses associated with being a public company; professional fees for accounting, auditing, tax and consulting services; insurance costs; travel expenses; other operating costs; and facility-related expenses. Other Income, Net Other income, net is comprised primarily of interest income on cash and cash equivalents and refundable tax credits from tax authorities.
Cash Flows The following table summarizes our sources and uses of cash for each of the periods presented: For the Year Ended December 31, 2024 2023 2022 (in thousands) Net cash used in operating activities $ (151,026 ) $ (19,431 ) $ (127,781 ) Net cash used in investing activities (938 ) (1,115 ) (1,255 ) Net cash provided by financing activities 253,890 132,534 67,188 Effect of foreign exchange rates on cash (138 ) (95 ) (210 ) Net increase (decrease) in cash, cash equivalents and restricted cash $ 101,788 $ 111,893 $ (62,058 ) Operating Activities During 2024, operating activities used $151.0 million of cash, primarily due to our net loss of $97.0 million, partially offset by non-cash charges of $21.8 million and changes in our operating assets and liabilities of $75.8 million.
Cash Flows The following table summarizes our sources and uses of cash for each of the periods presented: For the Year Ended December 31, 2025 2024 2023 (in thousands) Net cash used in operating activities $ (187,493 ) $ (151,026 ) $ (19,431 ) Net cash used in investing activities (718 ) (938 ) (1,115 ) Net cash provided by financing activities 488,235 253,890 132,534 Effect of foreign exchange rates on cash 12 (138 ) (95 ) Net increase in cash, cash equivalents and restricted cash $ 300,036 $ 101,788 $ 111,893 Operating Activities During 2025, operating activities used $187.5 million of cash, primarily due to our net loss of $204.4 million and changes in our operating assets and liabilities of $16.9 million, partially offset by non-cash charges of $33.8 million The non-cash charges for 2025 related to share-based compensation expense of $25.0 million, amortization of right-of-use assets of $5.4 million, and depreciation expense of $3.4 million.
The increase of $3.6 million in other income, net was primarily driven by an increase in estimated refundable tax credits as well as an increase in dividend income during the year ended December 31, 2024. 96 Income Tax Benefit During the years ended December 31, 2024 and 2023, we recorded no income tax benefit or provision and an income tax benefit of $0.7 million, respectively.
The increase of $3.6 million in other income, net was primarily driven by an increase in estimated refundable tax credits as well as an increase in interest income during the year ended December 31, 2024.
Liquidity and Capital Resources Since our inception, we have not generated any product revenue and have incurred recurring net operating losses. To date, we have primarily funded our operations through public and other registered offerings of our ordinary shares and other securities, collaborations with third parties and private placements of debt and equity securities.
To date, we have primarily funded our operations through public and other registered offerings of our ordinary shares and other securities, collaborations with third parties and private placements of debt and equity securities.
The increase in revenue earned year over year related to the Takeda Collaboration is primarily due to the termination of the C9 and SCA3 programs in 2023 which led to the recognition of the remainder of the deferred revenue related to the research and development services, as well as the options related to the C9 and SCA3 programs.
The decrease in the Takeda Collaboration revenue earned year over year was primarily due to the termination of the collaboration agreement in October 2024, which led to the recognition of the remainder of the deferred revenue related to the research and development services, as well as the license related to the HD program.
General and Administrative Expenses General and administrative expenses were $59.0 million for the year ended December 31, 2024, compared to $51.3 million for the year ended December 31, 2023. The increase of $7.7 million is primarily driven by increases in compensation related expenses and administrative expenses.
This is mainly due to increases in compensation-related expenses and facilities-related expenses, partially offset by decreases in other external research and development expenses. General and Administrative Expenses General and administrative expenses were $59.0 million for the year ended December 31, 2024, compared to $51.3 million for the year ended December 31, 2023.
The income tax benefit for the year ended December 31, 2023 was due to a change in estimate in connection with U.S. tax guidance relating to the capitalization of research and development expenditures.
The income tax benefit for the year ended December 31, 2023 was due to a change in estimate in connection with U.S. tax guidance relating to the capitalization of research and development expenditures. Liquidity and Capital Resources Since our inception, we have not generated any product revenue and have incurred recurring net operating losses.
Other Income, Net Other income, net for the years ended December 31, 2024 and 2023 was $13.4 million and $9.8 million, respectively.
The increase of $7.7 million was primarily driven by increases in compensation related expenses and administrative expenses. Other Income, Net Other income, net for the years ended December 31, 2024 and 2023 was $13.4 million and $9.8 million, respectively.
Our toolkit of RNA-targeting modalities includes RNA editing, splicing, silencing using RNA interference (“siRNA") and antisense silencing, providing us with unique capabilities for designing and sustainably delivering candidates that optimally address disease biology.
Our toolkit of RNA-targeting modalities, including RNAi (SpiNA) and RNA editing (AIMers), provides us with unmatched capabilities for designing and sustainably delivering candidates that optimally address disease biology.
Revenue for year ended December 31, 2022 was $3.6 million and was earned primarily under the Takeda Collaboration Agreement, as the GSK Collaboration Agreement became effective in January 2023.
Revenue for the year ended December 31, 2024 was $108.3 million, and was earned under the GSK Collaboration Agreement ($37.0 million) and the Takeda Collaboration Agreement ($71.3 million).
We have more than a decade of experience challenging convention related to oligonucleotide design and pioneering novel chemistry modifications to optimize the pharmacological properties of our molecules. We have seen in clinical trials that these chemistry modifications enhance potency, distribution, and durability of effect of our molecules.
We were founded on the recognition that there was a significant, untapped opportunity to use chemistry innovation to tune the pharmacological properties of oligonucleotides. We have more than a decade of experience challenging convention related to oligonucleotide design and pioneering novel chemistry modifications to optimize the pharmacological properties of our molecules.
Our net loss was $97.0 million in 2024, $57.5 million in 2023, and $161.8 million in 2022. As of December 31, 2024 and 2023, we had an accumulated deficit of $1,121.9 million and $1,024.9 million, respectively. We expect to incur significant expenses and operating losses for the foreseeable future.
Financial Operations Overview We have never been profitable, and since our inception, we have incurred significant operating losses. Our net loss was $204.4 million in 2025, $97.0 million in 2024, and $57.5 million in 2023. As of December 31, 2025 and 2024, we had an accumulated deficit of $1,326.2 million and $1,121.9 million, respectively.
The $109.7 million increase in revenue year over year was driven by the revenue recognized under the new GSK Collaboration Agreement, after it became effective in January 2023, as well as the increase in revenue recognized under the Takeda Collaboration Agreement.
The $5.0 million decrease in revenue year over year was driven by the revenue recognized under the GSK Collaboration Agreement, partially offset by the increase in revenue recognized under the Takeda Collaboration Agreement.
During 2022, operating activities used $127.8 million of cash, primarily due to our net loss of $161.8 million, partially offset by non-cash charges of $27.3 million and changes in our operating assets and liabilities of $6.7 million. The non-cash charges for 2022 related mainly to share-based compensation expense of $17.2 million and depreciation expense of $6.6 million.
During 2024, operating activities used $151.0 million of cash, primarily due to our net loss of $97.0 million, partially offset by non-cash charges of $21.8 million and changes in our operating assets and liabilities of $75.8 million.
Other Income, Net Other income, net for the years ended December 31, 2023 and 2022 was $9.8 million and $1.6 million, respectively. The increase of $8.2 million in other income, net was primarily driven by an increase in dividend income as well as an increase in estimated refundable tax credits during the year ended December 31, 2023.
The decrease of $2.4 million in other income, net was primarily driven by a decrease in estimated refundable tax credits during the year ended December 31, 2025. Income Tax Benefit During the years ended December 31, 2025 and 2024, we recorded no income tax benefit or provision.
The largest change in operating assets and liabilities was a $9.3 million increase in accounts payable. Investing Activities During 2024, investing activities used $0.9 million of cash, primarily consisting of purchases of property and equipment.
Investing Activities During 2025, investing activities used $0.7 million of cash, primarily consisting of purchases of property and equipment. During 2024, investing activities used $0.9 million of cash, primarily consisting of purchases of property and equipment. During 2023, investing activities used $1.1 million of cash, primarily consisting of purchases of property and equipment.
The gross proceeds to us from the September 2024 Offering were $200.0 million before deducting underwriting discounts and commissions and other offering expenses. On October 1, 2024, the representatives of the underwriters exercised their option in full to purchase an additional 3,750,000 ordinary shares, for additional net proceeds to us of approximately $28.2 million.
The gross proceeds to us from the December 2025 Offering were approximately $402.5 million before deducting underwriting discounts and commissions and other offering expenses, and including gross proceeds from the exercise of the Underwriters' option to purchase the additional shares in full.
General and Administrative Expenses General and administrative expenses were $51.3 million for the year ended December 31, 2023, compared to $50.5 million for the year ended December 31, 2022. The increase of $0.8 million was primarily driven by increases in other general and administrative operating expenses, partially offset by a decrease in compensation-related expenses.
This is mainly due to increases in compensation-related expenses and facilities-related expenses, partially offset by decreases in other external research and development expenses. General and Administrative Expenses General and administrative expenses were $75.3 million for the year ended December 31, 2025, compared to $59.0 million for the year ended December 31, 2024.
Our diversified pipeline includes clinical programs in obesity, alpha-1 antitrypsin deficiency (“AATD”), Duchenne muscular dystrophy (“DMD”), and Huntington’s disease (“HD”), as well as several preclinical programs utilizing our versatile RNA medicines platform. We were founded on the recognition that there was a significant, untapped opportunity to use chemistry innovation to tune the pharmacological properties of oligonucleotides.
Our pipeline is focused on our obesity (WVE-007), alpha-1 antitrypsin deficiency (“AATD”) (WVE-006) and PNPLA3 I148M liver disease (WVE-008) programs, and also includes clinical programs for Duchenne muscular dystrophy (“DMD”) and Huntington’s disease (“HD”), as well as several preclinical programs utilizing our versatile RNA medicines platform.
Additionally, there were $3.1 million in net proceeds from our "at-the-market" equity program. During 2022, net cash provided by financing activities was $67.2 million, primarily due to the $65.5 million in net proceeds from the underwritten offering we completed in June 2022, which was comprised of sales of ordinary shares and the 2022 Pre-Funded Warrants.
Financing Activities During 2025, net cash provided by financing activities was $488.2 million, primarily due to the $377.8 million in net proceeds from the December 2025 Offering of ordinary shares and the 2025 Pre-Funded Warrants, $94.6 million in net proceeds from sales under our “at-the-market” equity program, as well as $14.9 million in proceeds from the exercise of stock options.
Research and Development Expenses The following table summarizes our research and development expenses incurred for the years ended December 31, 2023 and 2022: For the Year Ended December 31, 2023 2022 Change (in thousands) AATD program $ 8,453 $ 3,763 $ 4,690 DMD programs 7,808 2,610 5,198 HD programs 13,086 7,952 5,134 Other research and development expenses (1) , including INHBE, RNA editing, PRISM, others 91,617 89,992 1,625 ALS and FTD programs (discontinued) 9,045 11,539 (2,494 ) Total research and development expenses $ 130,009 $ 115,856 $ 14,153 (1) Includes expenses related to other research and development programs, identification of potential drug discovery candidates, compensation-related expenses, internal manufacturing expenses, equipment repairs and maintenance expense, facility-related expenses, and other operating expenses, which are not allocated to specific programs. 97 Research and development expenses were $130.0 million for the year ended December 31, 2023, compared to $115.9 million for the year ended December 31, 2022.
Research and Development Expenses The following table summarizes our research and development expenses incurred for the years ended December 31, 2025 and 2024: For the Year Ended December 31, 2025 2024 Increase (Decrease) (in thousands) INHBE program $ 15,715 $ 9,294 $ 6,421 AATD program 5,714 11,666 (5,952 ) DMD program 19,469 15,536 3,933 HD program 2,678 11,790 (9,112 ) Other research and development expenses(1), including PNPLA3, additional preclinical programs, PRISM 139,203 111,396 27,807 Total research and development expenses $ 182,779 $ 159,682 $ 23,097 (1) Includes expenses related to other research and development programs, identification of potential drug discovery candidates, compensation-related expenses, internal manufacturing expenses, equipment repairs and maintenance expense, facility-related expenses, and other operating expenses, which are not allocated to specific programs.
We received an additional $14.0 million in net proceeds from the December 2023 Offering in January 2024. On September 27, 2024, we closed the September 2024 Offering in which we issued and sold 23,125,001 of our ordinary shares and the 2024 Pre-Funded Warrants to purchase up to 1,875,023 of our ordinary shares.
On December 11, 2025, we closed an underwritten public offering (the "December 2025 Offering") in which we issued and sold 18,552,632 of our ordinary shares, including 2,763,157 ordinary shares issued and sold pursuant to the underwriter's exercise in full of their option to purchase additional shares, and pre-funded warrants to purchase up to 2,631,578 of our ordinary shares (the "2025 Pre-Funded Warrants").