Biggest changeNet cash provided by financing activities of $176.3 million for the year ended December 31, 2021 consisted primarily of net proceeds from the issuance of common stock in the August 2021 public offering and sales of our common stock made pursuant to the 2021 Sales Agreement, as well as proceeds from the exercise of stock options and issuance of common stock under the ESPP.
Biggest changeNet 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.
Research Collaboration and License Agreement with Eli Lilly and Company In April 2019, we entered into a Research Collaboration and License Agreement with Eli Lilly and Company, or Lilly, (the Lilly Agreement) for the discovery, development, and commercialization of AOC products in immunology and other select indications on a worldwide basis.
Research Collaboration with Eli Lilly and Company In April 2019, we entered into a Research Collaboration and License Agreement, or the Lilly Agreement, with Eli Lilly and Company, or Lilly, for the discovery, development, and commercialization of AOC products in immunology and other select indications on a worldwide basis.
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.
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 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 RNA therapeutics. Our advancing and expanding pipeline currently has three programs in clinical development.
References to “Avidity,” “we,” “us” and “our” refer to Avidity Biosciences, Inc. Overview We are a biopharmaceutical company committed to delivering a new class of RNA therapeutics called Antibody Oligonucleotide Conjugates, or AOCs.
References to “Avidity,” "the Company," “we,” “us” and “our” refer to Avidity Biosciences, Inc. Overview We are a biopharmaceutical company committed to delivering a new class of RNA therapeutics called Antibody Oligonucleotide Conjugates, or AOCs.
Our research and development expenses include: • external costs, including expenses incurred under arrangements with third parties, such as contract research organizations, contract manufacturers, consultants, and our scientific advisors; and 85 Table of Contents • internal costs, including; • employee-related expenses, including salaries, benefits, and stock-based compensation; • the costs of laboratory supplies and acquiring, developing, and manufacturing preclinical study materials; and • facilities, information technology, and depreciation, which include direct and allocated expenses for rent and maintenance of facilities and depreciation of leasehold improvements and equipment.
Our research and development expenses include: • external costs, including expenses incurred under arrangements with third parties, such as contract research organizations, contract manufacturers, consultants and our scientific advisors; and • internal costs, including; • employee-related expenses, including salaries, benefits, and stock-based compensation; • the costs of laboratory supplies and acquiring, developing, and manufacturing preclinical study materials; and • facilities, information technology, and depreciation, which include direct and allocated expenses for rent and maintenance of facilities and depreciation of leasehold improvements and equipment.
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 and preclinical and clinical studies, 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 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.
For licenses that are bundled with other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, upfront fees.
For licenses that are bundled with other promises, we utilize judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of 93 Table of Contents recognizing revenue from non-refundable, upfront fees.
While we may generate revenue under our current and/or future collaboration agreements, we 84 Table of Contents 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, which we expect will take a number of years and may never occur.
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, 89 Table of Contents including current and potential future collaborations, licenses and other similar arrangements.
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 current and potential future collaborations, licenses and other similar arrangements.
The Lease has a five-year initial term with a renewal option for an additional five years. Under the terms of the Lease, the initial monthly base rent of approximately $251,000 will increase to approximately 90 Table of Contents $282,000 during the last year of the Lease's initial term, and the first year includes five months of rent abatement.
The Lease has a five-year initial term with a renewal option for an additional five years. Under the terms of the Lease, the initial monthly base rent of approximately $251,000 will increase to approximately $282,000 during the last year of the Lease's initial term, and the first year includes five months of rent abatement.
To date, 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 financial statements included elsewhere in this annual report.
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.
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.
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.
Revenue Recognition To date, all of our revenue has been derived from our collaboration and research agreements entered into with Lilly and various other parties.
Revenue Recognition To date, all of our revenue has been derived from our collaboration and research agreements entered into with various parties.
Contractual Obligations and Commitments We have operating lease obligations related to our lease for office and laboratory space in San Diego, California. In June 2020, and as amended in December 2020, we entered into a non-cancellable operating lease for approximately 47,737 square feet of office and laboratory space, or the Lease, which commenced in November 2021.
Contractual Obligations and Commitments We have operating lease obligations related to our lease for office and laboratory space in San Diego, California. In June 2020, and as amended in December 2020, we entered into a non-cancellable operating lease for approximately 54,597 square feet of office and laboratory space, or the Lease, which commenced in November 2021.
Stock-based compensation expense for employee stock purchases under the Employee Stock Purchase Plan, or the ESPP, is recorded at the estimated fair value of the purchase as of the plan enrollment date and is recognized as expense on a straight-line basis over the applicable six-month ESPP offering period.
Stock-based compensation expense for employee stock purchases under the Employee Stock Purchase Plan, or the ESPP, is recorded at the estimated fair value of the purchase as of the plan enrollment date and is recognized as expense on a straight-line basis over the applicable six-month ESPP offering period. Forfeitures are accounted for as incurred.
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, sales agreements, and under collaboration and research service agreements.
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.
Our 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 our preclinical and clinical activities increase; • the timing and amount of the milestone or other payments made to us under the Lilly Agreement or any future 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.
Our 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.
In July 2021, we entered into a sales agreement (the 2021 Sales Agreement) with Cowen and Company, LLC (the Sales Agent), under which we may, from time to time, sell shares of common stock having an aggregate offering price of up to $150.0 million through the Sales Agent.
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.
Please see the section below entitled "Liquidity and Capital Resources" for further information on the capital raised since inception and the Company’s future capital requirements. We have incurred operating losses in each year since inception. Our net losses were $174.0 million, $118.0 million and $44.4 million for the years ended December 31, 2022, 2021 and 2020, respectively.
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.
For the comparison of the financial results for the fiscal years ended December 31, 2021 and 2020, 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, 202 1 , filed with the SEC on March 1 , 202 2 .
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 .
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 86 Table of Contents • the efficacy and safety profile of our product candidates.
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.
We estimate the fair value of our stock-based awards using the Black-Scholes model. The Black-Scholes model requires the use of subjective assumptions, including the expected volatility, expected term and expected dividend yield. These inputs are subjective and generally require judgment to develop.
We estimate the fair value of our stock option awards and shares issued under the Company's ESPP using the Black-Scholes-Merton, or BSM model. The BSM model requires the use of subjective assumptions, including the expected volatility, expected term, and expected dividend yield. These inputs are subjective and generally require judgment to develop.
Future Capital Requirements As of December 31, 2022, we had cash, cash equivalents, and marketable securities of $610.7 million. 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 Form 10-K.
The total remaining base rent commitment for the initial term under the Lease is $12.7 million. We enter into contracts in the normal course of business for contract research services, contract manufacturing services, clinical trials, professional services, and other services and products for operating purposes. These contracts may include certain provisions that could require payments for early termination.
We enter into contracts in the normal course of business for contract research services, contract manufacturing services, clinical trials, professional services, and other services and products for operating purposes. These contracts may include certain provisions that could require payments for early termination.
Under the 2022 Sales Agreement, we may, from time to time, sell shares of our common stock having an aggregate offering price of up to $200.0 million through the Sales Agent. Upon entry into the 2022 Sales Agreement, the 2021 Sales Agreement was terminated.
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.
On November 8, 2022, we entered into a new sales agreement (the 2022 Sales Agreement) with the Sales Agent, with substantially similar terms as the 2021 Sales Agreement described above.
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.
Deferred revenue represented the portion of payments received that have not been earned. 91 Table of Contents Stock-Based Compensation Stock-based compensation expense for employee and non-employee stock option grants is recorded at the estimated fair value of the award as of the grant date and is recognized as expense on a straight-line basis over the requisite service period (usually the vesting period) of the stock-based award, and forfeitures are recognized as incurred.
Stock-Based Compensation Stock-based compensation expense for employee and non-employee stock option grants is recorded at the estimated fair value of the award as of the grant date and is recognized as expense on a straight-line basis over the requisite service period (usually the vesting period) of the stock-based award.
Financing Activities Net cash provided by financing activities of $346.2 million for the year ended December 31, 2022 consisted primarily of net proceeds from sales of our common stock made pursuant to the 2021 Sales Agreement and net proceeds from the issuance of common stock from the December 2022 public offering.
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.
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™ trial and MARINA open label extension study, or MARINA-OLE™. 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 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.
Cash Flows The following table summarizes our cash flows for the years presented (in thousands): Year Ended December 31, Change 2022 2021 Net cash provided by (used in): Operating activities $ (136,268) $ (94,813) $ (41,455) Investing activities (189,955) (82,517) (107,438) Financing activities 346,171 176,316 169,855 Net (decrease) increase in cash, cash equivalents and restricted cash $ 19,948 $ (1,014) $ 20,962 Operating Activities Net cash used in operating activities of $136.3 million and $94.8 million for the years ended December 31, 2022 and 2021, 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 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.
As of December 31, 2022, we had an accumulated deficit of $358.5 million.
As of December 31, 2023, we had an accumulated deficit of $570.8 million.
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.
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.
Investing Activities 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.
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.
We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition.
We evaluate the measure of progress each reporting period and, if necessary, adjust the measure of performance and related revenue recognition. With respect to BMS, we identified two distinct units of accounting under the BMS Agreements.
Since our inception through December 31, 2022, 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 $38.1 million from funding under collaboration and research services agreements.
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.
The increase of $11.5 million was primarily due to higher personnel costs, including $2.4 million for salaries and benefits, $4.1 million for stock-based compensation, and $3.1 million in professional fees to support our expanded operations.
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.
For all periods presented, amounts received prior to satisfying the above revenue recognition criteria were recorded as deferred revenue until all applicable revenue recognition criteria were met.
The Company periodically reviews and updates the estimated collaboration expenses, when appropriate, which adjusts the percentage of revenue that is recognized for the period. For all periods presented, amounts received prior to satisfying the above revenue recognition criteria were recorded as deferred revenue until all applicable revenue recognition criteria were met.
AOC 1044 is designed for people with Duchenne muscular dystrophy and is currently in Phase 1/2 development with the EXPLORE44™ trial. AOC 1044 is specifically designed for people with mutations amenable to exon 44 skipping, or DMD44, and is the first of multiple AOCs the company is developing for DMD.
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.
Research and Development Expenses The following tables illustrate the components of our research and development expenses for the years presented (in thousands): 87 Table of Contents Year Ended December 31, Change 2022 2021 External costs: AOC 1001 $ 19,878 $ 22,081 (2,203) AOC 1020 14,287 8,873 5,414 AOC 1044 10,052 14,799 (4,747) Other programs 14,774 6,308 8,466 Unallocated 26,134 6,922 19,212 Total external costs 85,125 58,983 26,142 Internal costs: Employee-related expenses 48,972 31,751 17,221 Facilities, lab supplies, and other 16,307 10,448 5,859 Total research and development expenses $ 150,404 $ 101,182 $ 49,222 Research and development expenses were $150.4 million for the year ended December 31, 2022 compared to $101.2 million for the year ended December 31, 2021.
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.
The increase is due to increased research and development costs as well as general and administrative expenses as described under “Results of Operations” above.
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.
Through December 31, 2022, we have sold 8,552,361 shares of our common stock pursuant to the 2021 Sales Agreement and received net proceeds of $140.6 million, after deducting offering-related transaction costs and commissions.
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.
Results of Operations Comparison of the Years Ended December 31, 2022 and 2021 The following table summarizes our results of operations for the years presented (in thousands): Year Ended December 31, Change 2022 2021 Revenue $ 9,224 $ 9,326 $ (102) Research and development expenses 150,404 101,182 49,222 General and administrative expenses 37,733 26,195 11,538 Other income (expense) 4,918 42 4,876 Revenue Revenue of $9.2 million and $9.3 million for the years ended December 31, 2022 and 2021, respectively, was primarily derived from the Lilly 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.
Accordingly, we will recognize revenue for the fixed or determinable collaboration in an amount proportional to the collaboration expenses incurred and the total estimated collaboration expenses over the five-year period over which we expect to deliver our performance obligations.
The Company will recognize revenue using the input method in an amount proportional to the collaboration expenses incurred and the total estimated collaboration expenses over the seven-year period in which it expects to deliver its performance obligation as this method provides the most faithful depiction of the Company's transfer of services under the BMS Agreements.
We have identified one performance obligation for all the deliverables under the Lilly Agreement since the delivered elements are either not capable of being distinct or are not distinct within the context of the contract.
The Company has determined that these delivered elements individually are either not capable of being distinct or are not distinct within the context of the contract and, therefore, will account for them as a single distinct performance obligation for purposes of revenue recognition.