Biggest changeOur future capital requirements are difficult to forecast and will depend on many factors, including but not limited to: • the type, number, scope, progress, expansions, results, costs and timing of discovery, preclinical studies and clinical trials of our product candidates that we are pursuing or may choose to pursue in the future, including the impact of any resolution of the partial clinical hold on our completed Phase 1/2 MARINA clinical trial; • the costs and timing of manufacturing for our product candidates and commercial manufacturing if any product candidate is approved; • the costs, timing, and outcome of regulatory review of our product candidates; • the terms and timing of establishing and maintaining collaborations, licenses, and other similar arrangements; • the costs of obtaining, maintaining, and enforcing our patents and other intellectual property rights; • the costs associated with hiring additional personnel and consultants as our preclinical and clinical activities increase; • the timing and amount of the milestone or other payments made to us under current or future research and collaboration agreements; 91 Table of Contents • the costs and timing of establishing or securing sales and marketing capabilities if any product candidate is approved; • our ability to achieve sufficient market acceptance, coverage and adequate reimbursement from third-party payors, and adequate market share and revenue for any approved products; and • costs associated with any products or technologies that we may in-license or acquire.
Biggest changeOur future capital requirements are difficult to forecast and will depend on many factors, including but not limited to: • the type, number, scope, progress, expansions, results, costs and timing of discovery, preclinical studies and clinical trials of our product candidates that we are pursuing or may choose to pursue in the future; • the costs and timing of manufacturing for our product candidates and commercial manufacturing if any product candidate is approved; • the costs, timing, and outcome of regulatory review of our product candidates; • the terms and timing of establishing and maintaining collaborations, licenses, and other similar arrangements; • the costs of obtaining, maintaining, and enforcing our patents and other intellectual property rights; • the costs associated with hiring additional personnel and consultants as we continue to grow our company; • the timing and amount of the milestone or other payments made to us under current or future research and collaboration agreements; • the costs and timing of establishing or securing sales and marketing capabilities if any product candidate is approved; • our ability to achieve sufficient market acceptance, coverage and adequate reimbursement from third-party payors, and adequate market share and revenue for any approved products; and • costs associated with any products or technologies that we may in-license or acquire. 97 Table of Contents While we may generate revenue under our current and/or future collaboration agreements, we do not expect to generate any revenues from product sales until we successfully complete development and obtain regulatory approval for one or more of our product candidates, which we do not expect will occur in the immediate near term, and may never occur.
Research Collaboration with Bristol Myers Squibb Company In November 2023, we entered into (i) a Research Collaboration and License Agreement with BMS, or the BMS Collaboration Agreement, to expand on the research with MyoKardia for up to five targets utilizing our proprietary AOC platform technology and (ii) a Securities Purchase Agreement with BMS, or the BMS Purchase Agreement, for the purchase by BMS in a private placement of 5,075,304 shares of our common stock at a purchase price of $7.8813 per share, for an aggregate purchase price of approximately $40 million.
Research Collaboration with Bristol Myers Squibb Company In November 2023, we entered into (i) a Research Collaboration and License Agreement, or the BMS Collaboration Agreement, to expand on the research with MyoKardia for up to five targets utilizing our proprietary AOC platform technology and (ii) a Securities Purchase Agreement with BMS, or the BMS Purchase Agreement, for the purchase by BMS in a private placement of 5,075,304 shares of our common stock at a purchase price of $7.8813 per share, for an aggregate purchase price of approximately $40 million.
If we obtain regulatory approval for any of our product candidates, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing, and distribution.
If we obtain regulatory approval for any of our product candidates, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing, and distribution.
Our failure to raise capital or enter into such other arrangements when needed would have a negative impact on our financial condition and could force us to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.
Our failure to raise capital or enter into such other arrangements when needed would have a negative impact on our financial condition and could force us to delay, limit, reduce or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.
The financial terms of these contracts vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided under such contracts. We reflect research and development expenses in our financial statements by matching those expenses with the period in which services and efforts are expended.
The financial terms of these contracts vary from contract to contract and may result in payment flows that do not match the periods over which materials or services are provided under such contracts. We reflect research and development expenses in our consolidated financial statements by matching those expenses with the period in which services and efforts are expended.
The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. On an ongoing basis, we evaluate these estimates and judgments. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances.
The preparation of these consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. On an ongoing basis, we evaluate these estimates and judgments. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances.
While our significant accounting policies are described in more detail in Note 2 to our financial statements included elsewhere in this annual report, we believe that the following accounting policies with financial estimates are the most critical to understanding and evaluating our historical and future performance.
While our significant accounting policies are described in more detail in Note 2 to our consolidated financial statements included elsewhere in this annual report, we believe that the following accounting policies with financial estimates are the most critical to understanding and evaluating our historical and future performance.
Critical Accounting Polices and Estimates Our management’s discussion and analysis of our financial condition and results of operations is based on our financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP.
Critical Accounting Polices and Estimates Our management’s discussion and analysis of our financial condition and results of operations is based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP.
ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations You should read the following discussion and analysis of our financial condition and results of operations together with our financial statements and related notes thereto included elsewhere in this annual report.
ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and related notes thereto included elsewhere in this annual report.
General and Administrative General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation, for employees in our executive, finance, accounting, legal, business development, and support functions.
General and Administrative General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation, for employees in our executive, finance, accounting, legal, business development, and other support functions.
For the comparison of the financial results for the fiscal years ended December 31, 2022 and 2021, see Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed with the SEC on February 28, 2023 .
For the comparison of the financial results for the fiscal years ended December 31, 2023 and 2022, see Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the SEC on February 28, 2024 .
Accordingly, until such time as we can generate significant revenue from sales of our product candidates, if ever, we expect to finance our cash needs through equity offerings, debt financings, or other capital sources, including potential collaborations, licenses and other similar arrangements.
Accordingly, until such time as we can generate 92 Table of Contents significant revenue from sales of our product candidates, if ever, we expect to finance our cash needs through equity offerings, debt financings, or other capital sources, including potential collaborations, licenses, and other similar arrangements.
Based upon our current operating plans, we believe that our existing cash, cash equivalents and marketable securities will be sufficient to fund our operations for at least 12 months from the date of the filing of this Form 10-K.
Based upon our current operating plans, we believe that our existing cash, cash equivalents, and marketable securities will be sufficient to fund our operations for at least 12 months from the date of the filing of this Annual Report on Form 10-K.
To date, there have been no material differences between our estimates of such expenses and the amounts actually incurred. 94 Table of Contents Recent Accounting Pronouncements See Note 2 to our financial statements included elsewhere in this annual report.
To date, 99 Table of Contents there have been no material differences between our estimates of such expenses and the amounts actually incurred. Recent Accounting Pronouncements See Note 2 to our consolidated financial statements included elsewhere in this annual report.
Research and development costs, including costs reimbursed under the Lilly Agreement, are expensed as incurred, with reimbursements of such amounts being recognized as revenue. We account for nonrefundable advance payments for goods and services that will be used in future research and development activities as expenses when the service has been performed or when the goods have been received.
Research and development costs, including costs reimbursed under collaboration agreements, are expensed as incurred, with reimbursements of such amounts being recognized as revenue. We account for nonrefundable advance payments for goods and services that will be used in future research and development activities as expenses when the service has been performed or when the goods have been received.
We expect our general and administrative expenses will increase for the foreseeable future to support our increased research and development activities and other corporate activities. Other Income (Expense) Other income (expense) consists primarily of interest earned on our cash, cash equivalents, and marketable securities.
We expect our general and administrative expenses will increase for the foreseeable future to support our increased research and development activities, commercial readiness initiatives, and other corporate activities. Other Income (Expense) Other income (expense) consists primarily of interest earned on our cash, cash equivalents, and marketable securities.
Our net losses may 86 Table of Contents fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our preclinical studies and clinical trials and our expenditures on other research and development activities, as well as the generation of any collaboration and services revenue.
Our net losses may fluctuate significantly from quarter-to-quarter and year-to-year, depending on the timing of our preclinical studies and clinical trials and our expenditures on other research and development activities, as well as the generation of any collaboration and services revenue.
In June 2023, we further amended the lease to expand our office and laboratory space. The expansion increased monthly base rent by approximately $45,000 increasing to $49,000 per month in the last year of the Lease's term. The total remaining base rent commitment for the initial term under the Lease is $11.2 million.
In June 2023, we further amended the lease to expand our office and laboratory space. The expansion increased monthly base rent by approximately $45,000 increasing to $49,000 per month in the last year of the Lease's term. The total remaining base rent commitment for the initial term under the Lease is $7.5 million.
Since our inception in 2012, we have devoted substantially all of our resources to organizing and staffing our company, business planning, raising capital, developing our proprietary AOC platform, identifying potential product candidates, establishing and protecting our intellectual property portfolio, conducting research and preclinical studies, advancing our clinical programs, and providing other general and administrative support for these operations.
Since our inception in 2012, we have devoted substantially all of our resources to organizing and staffing our company, business planning, raising capital, developing our proprietary AOC platform, identifying potential product candidates, establishing our intellectual property portfolio, conducting research, preclinical and clinical studies, preparing for potential commercial activities, and providing other general and administrative support for these operations.
Sales of the shares of common stock, if any, will be made at prevailing market prices at the time of sale, or as otherwise agreed with the Sales Agent. The Company is not obligated to sell, and the Sales Agent is not obligated to buy or sell, any shares of common stock under the 2022 Sales Agreement.
Sales of the shares of common stock, if any, will be made at prevailing market prices at the time of sale, or as otherwise agreed with the 2024 Sales Agent. We are not obligated to sell, and the 2024 Sales Agent is not obligated to buy or sell, any shares of common stock under the 2024 Sales Agreement.
While we may generate revenue under our current and/or future collaboration agreements, we do not expect to generate any revenues from product sales until we successfully complete development and obtain regulatory approval for one or more of our product candidates, which we expect will take a number of years and may never occur.
While we may generate revenue under our current and/or future collaboration agreements, we do not expect to generate any revenues from product sales until we successfully complete development and obtain regulatory approval for one or more of our product candidates.
Our proprietary AOC platform is designed to combine the specificity of monoclonal antibodies, or mAbs, with the precision of RNA therapeutics to target the root cause of diseases previously untreatable with RNA therapeutics. Our advancing and expanding pipeline currently has three programs in clinical development.
Our proprietary AOC platform is designed to combine the specificity of monoclonal antibodies, or mAbs, with the precision of RNA therapeutics to target the root cause of diseases previously untreatable with such therapeutics. Our pipeline currently has three programs in potentially registrational clinical trials.
Since our inception through December 31, 2023, other significant sources of capital raised to fund our operations were comprised of aggregate gross proceeds of $131.6 million from the sale and issuance of convertible preferred stock and convertible notes, and $143.3 million from funding under collaboration and research services agreements of which approximately $40.0 million relates to the sale of 5,075,304 unregistered shares in November 2023 to BMS in a private placement under the terms of the BMS Purchase Agreement.
As of December 31, 2024, other significant sources of capital raised to fund our operations were comprised of aggregate gross proceeds of $144.6 million from funding under collaboration and research services agreements of which approximately $40.0 million relates to the sale of 5,075,304 unregistered shares in November 2023 to BMS in a private placement under the terms of the BMS Purchase Agreement.
Based upon our current operating plans, we believe that our existing cash, cash equivalents, and marketable securities will be sufficient to fund our operations for at least 12 months from the date of the filing of this Form 10-K.
Future Capital Requirements As of December 31, 2024, we had cash, cash equivalents, and marketable securities of $1.5 billion. Based upon our current operating plans, we believe that our existing cash, cash equivalents, and marketable securities will be sufficient to fund our operations for at least 12 months from the date of the filing of this Form 10-K.
Investing Activities Net cash used in investing activities of $130.1 million for the year ended December 31, 2023 consisted of $461.0 million for purchases of marketable securities due to investing the proceeds from the sale of common stock of $223.8 million in December 2022 and reinvestment of proceeds from matured marketable securities, as well as $4.2 million in purchases of property and equipment, partially offset by $335.2 million of proceeds from maturities of marketable securities.
Net cash used in investing activities of $130.1 million for the year ended December 31, 2023 consisted of $461.0 million for purchases of marketable securities and $4.2 million in purchases of property and equipment, partially offset by $335.2 million of proceeds from maturities of marketable securities.
Under the 2022 Sales Agreement, the Company may, from time to time, sell shares of its common stock having an aggregate offering price of up to $200.0 million through the Sales Agent.
Under the 2024 Sales Agreement, we may, from time to time, sell shares of our common stock having an aggregate offering price of up to $400.0 million through the 2024 Sales Agent.
Other Income Other income increased by $18.5 million for the year ended December 31, 2023 as compared to the same period in 2022, due to higher interest income earned on marketable securities investments.
Other Income Other income increased by $33.3 million for the year ended December 31, 2024 as compared to the same period in 2023, due to higher interest income earned on marketable securities investments and cash and cash equivalent balances.
We expect our research and development expenses to increase for the foreseeable future as we continue to conduct our ongoing research and development activities, advance our preclinical research programs toward clinical development, including conducting IND-enabling studies, and conduct clinical trials. The process of conducting preclinical studies and clinical trials necessary to obtain regulatory approval is costly and time consuming.
We expect our research and development expenses to increase for the foreseeable future as we continue to conduct ongoing research and development activities, advance preclinical research programs toward clinical development, including IND-enabling studies, and conduct clinical trials.
During the years ended December 31, 2023 and 2022, the Company sold 4,107,810 and 7,771,812 shares of its common stock, respectively, pursuant to the Sales Agreements and received net proceeds of $60.5 million and $121.1 million, respectively, after deducting offering-related transaction costs and commissions of $1.4 million and $3.7 million, respectively.
During the years ended December 31, 2024 and 2023, we sold 418,408 and 4,107,810 shares of its common stock, respectively, pursuant to the Sales Agreement and received net proceeds of $5.6 million and $60.5 million, respectively, after deducting offering-related transaction costs and commissions of $0.1 million and $1.4 million, respectively.
If we fail to complete preclinical and clinical development of product candidates or obtain regulatory approval for our product candidates, our ability to generate future revenues and our results of operations and financial position would be adversely affected.
If we fail to complete preclinical and clinical development of product candidates or obtain regulatory approval for our product candidates, our ability to generate future revenues and our results of operations and financial position would be adversely affected. 93 Table of Contents Operating Expenses Research and Development Research and development expenses consist of costs associated with our research and development activities, including our discovery and research efforts, and the preclinical and clinical development of our product candidates.
The decrease in cash used in our operations is primarily due to the cash received in connection with the BMS Collaboration Agreement (excluding the cash received for the sale of our stock), offset by increases in research and development costs as well as general and administrative expenses as described under “Results of Operations” above.
The increase in cash used in our operations is primarily due to increases in research and development costs as well as general and administrative expenses as described under “Results of Operations” above.
In addition, we cannot forecast which development programs may be subject to future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements. 88 Table of Contents Our development costs may vary significantly based on factors such as: • the number and scope of clinical, preclinical, and IND-enabling studies; • the timing and likelihood of resolution of the partial clinical hold on our ongoing Phase 1/2 MARINA clinical trial; • per patient trial costs; • the number of trials required for approval; • the number of sites included in the trials; • the countries in which the trials are conducted; • the length of time required to enroll eligible patients; • the number of patients that participate in the trials; • the number of doses that patients receive; • the drop-out or discontinuation rates of patients; • potential additional safety monitoring requested by regulatory agencies; • the duration of patient participation in the trials and follow-up; • the cost and timing of manufacturing our product candidates; • the phase of development of our product candidates; and • the efficacy and safety profile of our product candidates.
Our development costs may vary significantly based on factors such as: • the number and scope of clinical, preclinical, and IND-enabling studies; • per patient trial costs; • the number of trials required for approval; • the number of sites included in the trials; • the countries in which the trials are conducted; • the length of time required to enroll eligible patients; • the number of patients that participate in the trials; • the number of doses that patients receive; • the drop-out or discontinuation rates of patients; 94 Table of Contents • potential additional safety monitoring requested by regulatory agencies; • the duration of patient participation in the trials and follow-up; • the cost and timing of manufacturing our product candidates; • the various phases of development of our product candidates; and • the efficacy and safety profiles of our product candidates.
Changes in the assumptions can materially affect the fair value and ultimately how much stock-based compensation expense is recognized. Accrued Research and Development Costs As part of the process of preparing our financial statements, we are required to make estimates of our accrued research and development expenses resulting from our obligations under contracts with CROs, manufacturers, vendors and consultants.
Accrued Research and Development Costs As part of the process of preparing our consolidated financial statements, we are required to make estimates of our accrued research and development expenses resulting from our obligations under contracts with CROs, manufacturers, vendors and consultants.
We are eligible to receive a tiered royalty ranging from the mid-single to low-double digits from Lilly on worldwide annual net sales of licensed products, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory. 87 Table of Contents Components of Results of Operations Revenue Our revenue to date has been derived from payments received under our license and research collaboration agreements, including revenue from reimbursements of services, as well as a combination of upfront payments and milestone payments under our current and/or future collaboration agreements.
We are eligible to receive a tiered royalty ranging from the mid-single to low-double digits from Lilly on worldwide annual net sales of licensed products, subject to specified and capped reductions for the market entry of biosimilar products, loss of patent coverage of licensed products, and for payments owed to third parties for additional rights necessary to commercialize licensed products in the territory.
Net cash used in investing activities of $190.0 million for the year ended December 31, 2022 consisted of $355.8 million for purchases of marketable securities and $2.8 million in purchases of property and equipment, partially offset by $168.7 million of proceeds from maturities of marketable securities. 92 Table of Contents Financing Activities Net cash provided by financing activities of $93.9 million for the year ended December 31, 2023 consisted primarily of $60.5 million in net proceeds from sales of our common stock made pursuant to the 2022 Sales Agreement and $31.2 million in net proceeds from the issuance of common stock from a private placement transaction as well as $2.1 million in proceeds from the issuance of common stock under employee incentive equity plans.
Net cash provided by financing activities of $93.9 million for the year ended December 31, 2023 consisted primarily of $60.5 million in net proceeds from the issuance of common stock in public offerings, $31.2 million in net proceeds from the issuance of common stock from a 98 Table of Contents private placement transaction, as well as $2.1 million in proceeds from the issuance of common stock under employee incentive equity plans.
General and Administrative Expenses General and administrative expenses increased by $16.5 million for the year ended December 31, 2023 as compared to the same period in 2022, primarily due to higher personnel costs, including increases of $4.3 million for stock-based compensation and $3.2 million for salaries and benefits, as well as $7.3 million in higher professional fees to support our expanded operations.
General and Administrative Expenses General and administrative expenses increased by $32.1 million for the year ended December 31, 2024 as compared to the same period in 2023, primarily due to $21.5 million in higher personnel costs and $6.1 million in higher professional fees to support our expanded operations and commercial readiness.
AOC 1020 is designed to treat people living with facioscapulohumeral muscular dystrophy, or FSHD, and is currently in Phase 1/2 development with the FORTITUDE™ trial. AOC 1044 is designed for people with Duchenne muscular dystrophy and is currently in Phase 1/2 development with the EXPLORE44™ trial.
Delpacibart braxlosiran, or del-brax (formerly AOC 1020), is the first investigational therapy designed to directly target DUX4 in people living with facioscapulohumeral muscular dystrophy, or FSHD, and is currently in Phase 1/2 development with the FORTITUDE TM trial.
Net cash provided by financing activities of $346.2 million for the year ended December 31, 2022 consisted primarily of $344.8 million in net proceeds from the issuance of common stock in public offerings and pursuant to the 2021 Sales Agreement, as well as $1.4 million in proceeds from the issuance of common stock under employee incentive equity plans.
Financing Activities Net cash provided by financing activities of $1.2 billion for the year ended December 31, 2024 consisted primarily of $762.2 million in net proceeds from sales of our common stock, $238.4 million in net proceeds from the issuance of common stock from a private placement transaction, $141.4 million in net proceeds from the sale of pre-funded warrants in a private placement, as well as $50.4 million in proceeds from the issuance of common stock under employee incentive equity plans.
Cash Flows The following table summarizes our cash flows for the years presented (in thousands): Year Ended December 31, Change 2023 2022 Net cash provided by (used in): Operating activities $ (119,064) $ (136,268) $ 17,204 Investing activities (130,070) (189,955) 59,885 Financing activities 93,864 346,171 (252,307) Net (decrease) increase in cash, cash equivalents and restricted cash $ (155,270) $ 19,948 $ (175,218) Operating Activities Net cash used in operating activities of $119.1 million and $136.3 million for the years ended December 31, 2023 and 2022, respectively, consisted primarily of cash used to fund our operations related to the development of AOC 1001, AOC 1044, AOC 1020, and other potential programs.
Cash Flows The following table summarizes our cash flows for the years presented (in thousands): Year Ended December 31, Change 2024 2023 Net cash provided by (used in): Operating activities $ (300,870) $ (119,064) $ (181,806) Investing activities (854,201) (130,070) (724,131) Financing activities 1,192,357 93,864 1,098,493 Net increase (decrease) in cash, cash equivalents and restricted cash $ 37,286 $ (155,270) $ 192,556 Operating Activities Net cash used in operating activities of $300.9 million and $119.1 million for the years ended December 31, 2024 and 2023, respectively, consisted primarily of cash used to fund our operations related to the development of del-desiran, del-brax, del-zota, and other potential programs.
In July 2021, the Company entered into a sales agreement, or the 2021 Sales Agreement, with Cowen and Company, LLC, or the Sales Agent, under which the Company may, from time to time, sell shares of its 90 Table of Contents common stock having an aggregate offering price of up to $150.0 million through the Sales Agent.
Liquidity and Capital Resources Sources of Liquidity On November 8, 2022, we entered into a sales agreement (the 2022 Sales Agreement) with Cowen and Company, LLC (the Sales Agent), under which we could sell shares of our common stock having an aggregate offering price of up to $200.0 million through the Sales Agent.
We may never succeed in achieving marketing approval for any of our product candidates. The timelines and costs associated with research and development activities are uncertain, can vary significantly for each product candidate and development program, and are difficult to predict.
The process of conducting preclinical studies and clinical trials necessary to obtain regulatory approval is costly and time consuming, and can vary significantly for each product candidate and development program. We may never succeed in achieving marketing approval for any of our product candidates.
AOC 1001 is designed to treat people with myotonic dystrophy type 1, or DM1, and is currently in Phase 1/2 development with the ongoing MARINA open label extension study, or MARINA-OLE™. In mid-2024, we plan to initiate the global Phase 3 HARBOR TM trial of AOC 1001 for adults living with DM1.
Delpacibart etedesiran, abbreviated as del-desiran (formerly AOC 1001), is designed to treat people with myotonic dystrophy type 1, or DM1, and is currently in Phase 3 development with the global HARBOR™ trial.
On December 15, 2022, we completed a public offering of 13,800,000 shares of our common stock at a public offering price of $17.25 per share, for aggregate net proceeds of $223.8 million, after deducting underwriting discounts, commissions and offering costs.
On June 17, 2024, we completed a public offering of 12,132,500 shares of our common stock at a public offering price of $38.00 per share. Net proceeds from the offering were approximately $432.8 million, after deducting underwriting discounts and offering expenses of $28.3 million.
Research and Development Expenses The following tables illustrate the components of our research and development expenses for the years presented (in thousands): Year Ended December 31, Change 2023 2022 External costs: AOC 1001 $ 25,216 $ 19,878 $ 5,338 AOC 1020 18,352 14,287 4,065 AOC 1044 20,137 10,052 10,085 Other programs 8,884 14,774 (5,890) Unallocated 31,044 26,134 4,910 Total external costs 103,633 85,125 18,508 Internal costs: Employee-related expenses 68,136 48,972 19,164 Facilities, lab supplies, and other 19,199 16,307 2,892 Total internal costs 87,335 65,279 22,056 Total research and development expenses $ 190,968 $ 150,404 $ 40,564 Research and development expenses increased by $40.6 million for the year ended December 31, 2023 as compared to the same period in 2022.
Research and Development Expenses The following tables illustrate the components of our research and development expenses for the years presented (in thousands): 95 Table of Contents Year Ended December 31, Change 2024 2023 External costs: Del-desiran $ 47,026 $ 25,216 $ 21,810 Del-brax 33,230 18,352 14,878 Del-zota 27,073 20,137 6,936 Other programs 7,617 8,884 (1,267) Unallocated 74,729 31,044 43,685 Total external costs 189,675 103,633 86,042 Internal costs: Employee-related expenses 90,935 68,136 22,799 Facilities, lab supplies and other 22,983 19,199 3,784 Total internal costs 113,918 87,335 26,583 Total research and development expenses $ 303,593 $ 190,968 $ 112,625 Research and development expenses increased by $112.6 million for the year ended December 31, 2024 as compared to the same period in 2023.
AOC 1044 is specifically designed for people with mutations amenable to exon 44 skipping, or DMD44, and is the first of multiple AOCs we are developing for DMD. AOC 1001, AOC 1020 and AOC 1044 have all been granted Orphan Designation by the FDA and the European Medicines Agency, or EMA, and Fast Track Designation by the FDA.
Delpacibart zotadirsen, or del-zota (formerly AOC 1044), is designed for people with Duchenne muscular dystrophy, or DMD, and is currently in development with the Phase 2 EXPLORE44-OLE TM study. Del-zota is specifically designed for people with mutations amenable to exon 44 skipping, or DMD44, and is the first of multiple AOCs we are developing for DMD.
Research and development expense increased primarily due to $22.1 million in higher external costs (adjusted for a $3.6 million out of period adjustment related to 2022 which reduced external costs) associated with the progression of clinical trials, as well as higher personnel costs, including increases of $12.4 million for salaries and benefits, $6.8 million for stock-based compensation and $2.9 million in higher facilities and lab related overhead charges related to our research and development activities.
Research and development expense increased primarily due to increased external costs associated with the progression of clinical trials and preclinical studies, including $41.1 million in higher manufacturing costs related to monoclonal antibodies used across programs, as well as higher internal costs including $22.8 million in higher personnel costs.
We have not generated any revenue from product sales. In June 2020, we completed our initial public offering, or IPO, and have since raised capital through additional public offerings, other sales of our common stock, and under collaboration and research service agreements.
In June 2020, we completed our initial public offering, or IPO, and have since raised capital through additional public offerings, private placements, and under collaboration and research license agreements. Refer to “Liquidity and Capital Resources” for further information on the capital raised since inception and our future capital requirements. We have incurred operating losses in each year since inception.
On November 8, 2022, the Company entered into a sales agreement, or the 2022 Sales Agreement, with the Sales Agent, with substantially similar terms as the 2021 Sales Agreement, or collectively the Sales Agreements.
On August 9, 2024, we entered into a sales agreement, or the 2024 Sales Agreement, with TD Securities (USA) LLC, or the 2024 Sales Agent, with substantially similar terms as the 2022 Sales Agreement. 96 Table of Contents The 2022 Sales Agreement was terminated upon effectiveness of the 2024 Sales Agreement.
Results of Operations Comparison of the Years Ended December 31, 2023 and 2022 The following table summarizes our results of operations for the years presented (in thousands): Year Ended December 31, Change 2023 2022 Revenue $ 9,560 $ 9,224 $ 336 Research and development expenses 190,968 150,404 40,564 General and administrative expenses 54,190 37,733 16,457 Other income 23,378 4,918 18,460 89 Table of Contents Revenue Revenue is materially flat for the year ended December 31, 2023 as compared to the same period in 2022.
Results of Operations Comparison of the Years Ended December 31, 2024 and 2023 The following table summarizes our results of operations for the years presented (in thousands): Year Ended December 31, Change 2024 2023 Revenue $ 10,897 $ 9,560 $ 1,337 Research and development expenses 303,593 190,968 112,625 General and administrative expenses 86,240 54,190 32,050 Other income 56,634 23,378 33,256 Revenue Revenue increased by $1.3 million for the year ended December 31, 2024 as compared to the same period in 2023, primarily due to the recognition of revenues under the BMS agreement in the current year for which there were no revenues recognized in the prior year comparative period, partially offset by a decrease in revenues under the Lilly agreement in the current year.
Please see the section below entitled "Liquidity and Capital Resources" for further information on the capital raised since inception and our future capital requirements. We have incurred operating losses in each year since inception. Our net losses were $212.2 million, $174.0 million and $118.0 million for the years ended December 31, 2023, 2022 and 2021, respectively.
Our net losses were $322.3 million, $212.2 million, and $174.0 million for the years ended December 31, 2024, 2023, and 2022, respectively. As of December 31, 2024, we had an accumulated deficit of $893.1 million.