Biggest changeOther income (expense), net Other income (expense), net consists primarily of research and development tax credits earned in the applicable period, as well as foreign currency transaction gains or losses, and interest income from interest-bearing cash equivalents. 109 Table of Contents Results of Operations Comparison of the Years Ended December 31, 2022 and 2021 The following table summarizes our results of operations (in thousands): Year Ended December 31, (in thousands) 2022 2021 Change Consolidated Statements of Operations Data: Operating Expenses: Research and development $ 30,324 $ 18,572 $ 11,752 General and administrative 13,227 10,026 3,201 Total operating expenses 43,551 28,598 14,953 Loss from operations (43,551) (28,598) (14,953) Other income (expense): Grant income 22,217 17,447 4,770 Change in the fair value of the derivative liability — 2,209 (2,209) Change in the fair value of SAFE — (2,236) 2,236 Other income (expense), net (35) (88) 53 Gain on debt extinguishment — 443 (443) Interest expense (28) (893) 865 Total other income, net 22,154 16,882 5,272 Net Loss $ (21,397) $ (11,716) $ (9,681) Research and Development Expenses The following table summarizes our research and development expenses (in thousands): Year Ended December 31, 2022 2021 Change Clinical programs $ 15,782 $ 4,679 $ 11,103 Personnel 7,481 4,882 2,599 Manufacturing 4,661 7,465 (2,804) Preclinical programs 2,178 1,426 752 Facilities and other costs 222 120 102 $ 30,324 $ 18,572 $ 11,752 Research and development expenses were $30.3 million for the year ended December 31, 2022, compared to $18.6 million for the year ended December 31, 2021.
Biggest changeOther Income (Expense), Net Other income (expense), net consists primarily of interest income from money market funds, other fees such as offering costs incurred to establish our equity line financing, as well as foreign currency transaction gains or losses. 109 Table of Contents Results of Operations Comparison of the Years Ended December 31, 2023 and 2022 The following table summarizes our results of operations (in thousands): Year Ended December 31, (in thousands) 2023 2022 Change Consolidated Statements of Operations Data: Operating Expenses: Research and development $ 37,196 $ 30,324 $ 6,872 General and administrative 13,528 13,227 301 Total operating expenses 50,724 43,551 7,173 Loss from operations (50,724) (43,551) (7,173) Other income (expense): Grant income 24,805 22,217 2,588 Other income (expense), net 158 (35) 193 Interest expense (27) (28) 1 Total other income, net 24,936 22,154 2,782 Net Loss $ (25,788) $ (21,397) $ (4,391) Research and Development Expenses The following table summarizes our research and development expenses (in thousands): Year Ended December 31, 2023 2022 Change Clinical programs $ 21,180 $ 15,782 $ 5,398 Personnel 9,193 7,481 1,712 Preclinical programs 3,503 2,178 1,325 Manufacturing 2,890 4,661 (1,771) Other expense 430 222 208 Total research & development expenses $ 37,196 $ 30,324 $ 6,872 Research and development expenses were $37.2 million for the year ended December 31, 2023, compared to $30.3 million for the year ended December 31, 2022.
To the extent available, we expect to continue our pursuit of non-dilutive research contributions, or grants, including additional NIA grant funding. However, we may fail to receive additional NIA Grants, or we may be unable to raise additional funds or enter into such other agreements or arrangements when needed on acceptable terms, or at all.
To the extent available, we expect to continue our pursuit of non-dilutive research contributions, or grants, including additional NIA grant funding. However, we may fail to receive additional NIA grants, or we may be unable to raise additional funds or enter into such other agreements or arrangements when needed on acceptable terms, or at all.
Our failure to obtain additional NIA Grants or raise capital or enter into such agreements as and when needed could have a material adverse effect on our business, results of operations and financial condition.
Our failure to obtain additional NIA grants or raise capital or enter into such agreements as and when needed could have a material adverse effect on our business, results of operations and financial condition.
While the potential further economic impact brought by, and the duration of, the COVID 19 pandemic may be difficult to assess or predict, there could be a significant disruption of global financial markets, reducing our ability to access capital, which could in the future negatively affect our liquidity and financial position.
While the potential further economic impact brought by the COVID-19 pandemic may be difficult to assess or predict, there could be a significant disruption of global financial markets, reducing our ability to access capital, which could in the future negatively affect our liquidity and financial position.
Our future funding requirements will depend on many factors, including, but not limited to: ● the scope, progress, costs and results of our ongoing and planned clinical trials of CT1812, as well as the associated costs, including any unforeseen costs we may incur as a result of preclinical study or clinical trial delays due to the COVID-19 pandemic or other diseases, macroeconomic conditions, global or political instability, such as the ongoing conflict between Ukraine and Russia, inflation, or other delays; ● the scope, progress, costs and results of preclinical development, laboratory testing and clinical trials for any future product candidates we may decide to pursue; 112 Table of Contents ● the extent to which we develop, in-license or acquire other product candidates and technologies; ● the costs and timing of process development and manufacturing scale-up activities associated with our product candidates and other programs as we advance them through preclinical and clinical development; ● the availability, timing, and receipt of any future NIA Grants; ● the number and development requirements of other product candidates that we may pursue; ● the costs, timing and outcome of regulatory review of our product candidates; ● the costs and timing of future commercialization activities, including product manufacturing, marketing, sales and distribution, for any of our product candidates for which we receive marketing approval; ● the revenue, if any, received from commercial sales of our product candidates for which we receive marketing approval; ● our ability to establish collaborations to commercialize CT1812 or any of our other product candidates outside the United States; ● 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; and ● the additional costs we may incur as a result of operating as a public company, including our efforts to enhance operational systems and hire additional personnel, including enhanced internal controls over financial reporting.
Our future funding requirements will depend on many factors, including, but not limited to: ● the scope, progress, costs and results of our ongoing and planned clinical trials of CT1812, as well as the associated costs, including any unforeseen costs we may incur as a result of preclinical study or clinical trial delays due to a pandemic, such as the COVID-19 pandemic, or other diseases, macroeconomic conditions, global or political instability, such as the ongoing global and regional conflicts, inflation, or other delays; ● the scope, progress, costs and results of preclinical development, laboratory testing and clinical trials for any future product candidates we may decide to pursue; ● the extent to which we develop, in-license or acquire other product candidates and technologies; ● the costs and timing of process development and manufacturing scale-up activities associated with our product candidates and other programs as we advance them through preclinical and clinical development; ● the availability, timing, and receipt of any future NIA grants; ● the number and development requirements of other product candidates that we may pursue; ● the costs, timing and outcome of regulatory review of our product candidates; ● the costs and timing of future commercialization activities, including product manufacturing, marketing, sales and distribution, for any of our product candidates for which we receive marketing approval; ● the revenue, if any, received from commercial sales of our product candidates for which we receive marketing approval; 112 Table of Contents ● our ability to establish collaborations to commercialize CT1812 or any of our other product candidates outside the United States; ● 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; and ● the additional costs we may incur as a result of operating as a public company, including our efforts to enhance operational systems and hire additional personnel, including enhanced internal controls over financial reporting.
Our goal is to develop disease modifying treatments for patients with these degenerative disorders by initially leveraging our expertise in the σ-2 (sigma-2) receptor, or S2R, which is expressed by multiple cell types, including neuronal synapses, and acts as a key regulator of cellular damage commonly associated with certain age-related degenerative diseases of the CNS and retina.
Our goal is to develop disease-modifying treatments for patients with these degenerative disorders by initially leveraging our expertise in the σ-2 (sigma-2) receptor (“S2R”), which is expressed by multiple cell types, including neuronal synapses, and acts as a key regulator of cellular damage commonly associated with certain age-related degenerative diseases of the CNS and retina.
As such, the expected volatility was derived from the average historical stock volatilities of the common stock of several public companies within the industry that the Company considers to be comparable to our business over a period equivalent to the expected term of the stock-based awards.
As such, the expected volatility was derived from the average historical stock volatilities of the common stock of several public companies within the industry that the Company considers to 115 Table of Contents be comparable to our business over a period equivalent to the expected term of the stock-based awards.
We do not own or operate manufacturing facilities. We rely, and expect to continue to rely, on third parties for the manufacture of CT1812 for preclinical studies and clinical trials, as well as for commercial manufacture if CT1812 obtains marketing approval.
We do not own or operate manufacturing facilities. We rely, and expect to continue to rely, on third parties for the manufacture of CT1812 for preclinical studies and clinical trials, as well as for commercial manufacture if CT1812 obtains 107 Table of Contents marketing approval.
Under the agreement, we financed $0.8 million of certain premiums at a 6.85% annual interest rate. Payments of less than $0.1 million are due monthly from October 2022 through September 2023. As of December 31, 2022, the outstanding principal of the loan was $0.6 million.
Under the agreement, we financed $0.8 million of certain premiums at a 6.85% annual interest rate. Payments of less than $0.1 million are due monthly from October 2022 through September 2023. As of December 31, 2023, there was no remaining outstanding principal on the loan.
We enter into contracts in the normal course of business with contract research organizations and other vendors to assist in the performance of our research and development and other services and products for operating purposes.
We enter into contracts in the normal course of business with CROs and other vendors to assist in the performance of our research and development and other services and products for operating purposes.
Since our inception in 2007, we have incurred significant operating losses and devoted substantially all of our time and resources to developing our lead product candidate, CT1812, building our intellectual property portfolio, raising capital and recruiting management and technical staff to support these operations. As of December 31, 2022, we had an accumulated deficit of $115.4 million.
Since our inception in 2007, we have incurred significant operating losses and devoted substantially all of our time and resources to developing our lead product candidate, CT1812, building our intellectual property portfolio, raising capital and recruiting management and technical staff to support these operations. As of December 31, 2023, we had an accumulated deficit of $141.2 million.
The grants awarded relate to agreed upon direct and indirect costs for specific studies or clinical trials, which may include personnel 108 Table of Contents and consulting costs, costs paid to contract research organizations, research institutions and /or consortiums involved in the grant, as well as facilities and administrative costs.
The grants awarded relate to agreed upon direct and indirect costs for specific studies or clinical trials, which may include personnel and consulting costs, costs paid to contract research organizations (“CROs”), research institutions and /or consortiums involved in the grant, as well as facilities and administrative costs.
As of December 31, 2022, we had cash and cash equivalents of $41.6 million. On October 13, 2021, we completed our IPO, pursuant to which we issued and sold 3,768,116 shares of our common stock at a public offering price of $12.00 per share.
As of December 31, 2023, we had cash and cash equivalents of $29.9 million. On October 13, 2021, we completed our IPO, pursuant to which we issued and sold 3,768,116 shares of our common stock at a public offering price of $12.00 per share.
On November 15, 2022, we closed our follow-on public offering, selling 5,000,000 shares of our common stock at a public offering price of $1.20 per share. The net proceeds were approximately $5.2 million, after deducting underwriting discounts and commissions and other offering related expenses payable by us.
The net proceeds from our IPO, which closed on October 13, 2021, were approximately $44.2 million, after deducting underwriting discounts and commissions and other offering related expenses payable by us. On November 15, 2022, we closed our follow-on public offering, selling 5,000,000 shares of our common stock at a public offering price of $1.20 per share.
The increase of $3.2 million was primarily due to: ● an increase of $1.1 million in Director & Officer liability insurance and other expenses; and ● an increase of $0.8 million in compensation and employee benefits driven by increased headcount; and ● an increase of $2.6 million in professional fees driven by increased audit, tax, and legal services; and ● a decrease of $1.3 million in equity-based compensation from stock option grants.
The increase of $0.3 million was primarily due to: ● an increase of $0.6 million in equity-based compensation from stock option grants and restricted stock unit (“RSU”); ● an increase of $0.3 million in compensation and employee benefits driven by increased headcount; ● a decrease of $0.2 million in professional fees driven by decreased audit, tax, and legal services; and ● a decrease of $0.4 million in Director & Officer liability insurance and other expenses.
Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the United States and worldwide resulting from the ongoing COVID-19 pandemic or other diseases, the ongoing conflict between Ukraine and Russia, inflation, liquidity constraints, failures and instability in U.S. and international financial banking systems, and otherwise.
Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the United States and worldwide resulting from the effects of the COVID-19 pandemic or other diseases, the ongoing global and regional conflicts, inflation, liquidity constraints, failures and instability in U.S. and international financial banking systems, and otherwise.
Investing Activities During the years ended December 31, 2022 and 2021, we used $0.2 and less than $0.1 million of cash, respectively, for investing activities related to purchases of property and equipment. Financing Activities Net cash provided by financing activities was $5.5 million and $53.2 million for the years ended December 31, 2022 and 2021, respectively.
Investing Activities During the years ended December 31, 2023 and 2022, we used $0.1 and $0.2 million of cash, respectively, for investing activities related to purchases of property and equipment. Financing Activities Net cash provided by financing activities was $4.5 million and $5.5 million for the years ended December 31, 2023 and 2022, respectively.
We believe that targeting the S2R complex represents a mechanism that is functionally distinct from other current approaches in clinical development for the treatment of degenerative diseases.
We believe that targeting the S2R complex represents a mechanism that is functionally distinct from other current approaches in clinical development for the treatment of degenerative diseases. Recent clinical results support this hypothesis.
As of December 31, 2022, the Company has been awarded grants with project periods that extend through May 31, 2026, subject to extension.
As of December 31, 2023, the Company has been awarded grants with project periods that extend through May 31, 2027, subject to extension.
Based on our current business plans, we believe that the net proceeds from the IPO and follow-on public offering, together with our existing cash and cash equivalents and income from non-dilutive grants, will be sufficient for us to fund our operating expenses and capital expenditures requirements into the second half of 2024, which assumes no usage from the ATM nor purchase agreement with Lincoln Park.
Based on our current business plans, we believe that our existing cash and cash equivalents, income from non-dilutive grants, and net proceeds from our March 2024 follow-on public offering will be sufficient for us to fund our operating expenses and capital expenditures requirements through May of 2025, which assumes no usage from the remaining ATM nor the Lincoln Park Purchase Agreement.
Emerging Growth Company Status We are an emerging growth company, as defined in the JOBS Act. Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies.
Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies.
Impact of COVID-19 on Our Business Our business has been and could continue to be adversely affected by the effects of the ongoing COVID-19 pandemic, including, but not limited to, our clinical trials. For example, our ongoing and/or planned clinical trials may be impacted by interruptions or delays in the operations of the FDA and comparable foreign regulatory authorities.
Impact of COVID-19 on Our Business Our business has been and could be adversely affected by the effects of the COVID-19 pandemic or other national health issues. For example, our ongoing and/or planned clinical trials may be impacted by interruptions or delays in the operations of the FDA and comparable foreign regulatory authorities.
Since our inception, we have received approximately $171.0 million in cumulative grant awards to fund our clinical trials, primarily from the NIA, and we have raised approximately $108.8 million in net proceeds from sales of our equity securities, convertible notes, SAFE, stock option exercises, our IPO and follow-on public offering.
Since our inception, we have received approximately $171.0 million in cumulative grant awards to fund our clinical trials, primarily from the NIA, and we have raised approximately $124.5 million in net proceeds from sales of our equity securities, convertible notes, SAFE, stock option exercises, IPO, follow-on public offerings, ATM, and equity line financing with Lincoln Park.
Other Income (Expense) Grant Income Grant income was $22.2 million for the year ended December 31, 2022, compared to $17.4 million for the year ended December 31, 2022. The change in grant income is correlated with the increase in eligible reimbursable costs incurred during 2022 as compared to 2021.
Other Income (Expense) Grant Income Grant income was $24.8 million for the year ended December 31, 2023, compared to $22.2 million for the year ended December 31, 2022. The change in grant income is correlated with the increase in eligible reimbursable costs related to clinical trials incurred during 2023 as compared to 2022.
Since our inception, we have received grant awards primarily from the NIA in the aggregate amount of approximately $171.0 million and have raised approximately $108.8 million in net proceeds from sales of our equity securities, convertible notes and SAFE, stock option exercises, our IPO and our follow-on public offering.
Since our inception, we have received grant awards primarily from the NIA in the aggregate amount of approximately $171.0 million and have raised approximately $124.5 million in net proceeds from sales of our equity securities, convertible notes and SAFE, stock option exercises, our ATM, our equity line financing with Lincoln Park, our IPO and our follow-on public offerings.
Net cash used in operating activities for the year ended December 31, 2021 was $3.6 million, which consisted primarily of our net loss of $11.7 million partially offset by net non-cash charges of $5.2 million and a net change of $2.8 million in our operating assets and liabilities.
Net cash used in operating activities for the year ended December 31, 2022 was $18.5 million, which consisted primarily of our net loss of $21.4 million partially offset by net non-cash charges of $3.8 million and a net change of $0.9 million in our operating assets and liabilities.
On November 15, 2022, we completed our follow-on public offering, pursuant to which we issued and sold 5,000,000 shares of our common stock at a public offering price of $1.20 per share. In connection with the follow-on public offering, we received net proceeds of approximately $5.2 million, after deducting underwriting discounts and commissions and other offering related expenses.
In connection with the IPO, we received net proceeds of approximately $44.2 million, after deducting underwriting discounts and commissions and other offering related expenses payable by us, which includes net proceeds of approximately $6.3 million from the exercise of the over-allotment option. 106 Table of Contents On November 15, 2022, we completed our follow-on public offering, pursuant to which we issued and sold 5,000,000 shares of our common stock at a public offering price of $1.20 per share.
We incurred net losses of $21.4 million and $11.7 million for the years ended December 31, 2022 and 2021, respectively.
We incurred net losses of $25.8 million and $21.4 million for the years ended December 31, 2023 and 2022, respectively.
To date, we have funded our operations primarily with proceeds from grants awarded by the National Institute of Aging, or NIA, a division of the National Institutes of Health, or NIH, and proceeds from our initial public offering, or IPO, completed in October 2021, proceeds from our follow-on public offering in November 2022, and the sales of our convertible promissory notes, convertible preferred stock, simple agreements for future equity, or SAFE, and stock option exercises.
To date, we have funded our operations primarily with proceeds from grants awarded by the National Institute of Aging (the “NIA”), a division of the National Institutes of Health (the “NIH”), and proceeds from our initial public offering (the “IPO”), completed in October 2021, proceeds from our follow-on public offerings in November 2022 and March 2024, sales of our common stock through our ATM (as defined below), sales of our convertible promissory notes, convertible preferred stock, simple agreements for future equity (“SAFE”) and stock option exercises.
We expect that our research and development expenses will increase substantially for the foreseeable future as we continue to invest in research and development activities related to developing our product candidates, as our product candidates advance into later stages of development, as we begin to conduct larger clinical trials, as we seek regulatory approvals for any product candidates that successfully complete clinical trials, as we expand our product pipeline, as we maintain, expand, protect and enforce our intellectual property portfolio, and as we incur expenses associated with hiring additional personnel to support our research and development efforts.
We expect that our research and development expenses will increase substantially for the foreseeable future as we continue to invest in research and development activities related to developing our product candidates, as our product candidates advance into later stages of development, as we begin to conduct larger clinical trials, as we seek regulatory approvals for any product candidates that successfully complete clinical trials, as we expand our product pipeline, as we maintain, expand, protect and enforce our intellectual property portfolio, and as we incur expenses associated with hiring additional personnel to support our research and development efforts. 108 Table of Contents General and Administrative Expenses General and administrative expenses consist primarily of personnel-related costs, including employee salaries, related benefits, and stock-based compensation expense for our employees in the executive, finance and accounting, and other administrative functions.
For the year ended December 31, 2022, we have not sold any shares of common stock under the ATM. 106 Table of Contents We expect to continue to incur significant and increasing expenses and net losses for the foreseeable future, as we advance our current and future product candidates through preclinical and clinical development, manufacture drug product and drug supply, seek regulatory approval for our current and future product candidates, maintain and expand our intellectual property portfolio, hire additional research and development and business personnel and operate as a public company.
We expect to continue to incur significant and increasing expenses and net losses for the foreseeable future, as we advance our current and future product candidates through preclinical and clinical development, manufacture drug product and drug supply, seek regulatory approval for our current and future product candidates, maintain and expand our intellectual property portfolio, hire additional research and development and business personnel and operate as a public company.
The net change in our operating assets and liabilities was primarily due to an increase in accounts payable of $2.2 million, an increase in accrued expenses of $1.3 million, and an increase in other current liabilities of $0.5 million, partially offset by an increase in grant receivables of $1.2 million.
The net change in our operating assets and liabilities was primarily due to an increase in grant receivables of $2.4 million, an increase in prepaid expenses and other assets of $1.8 million, an increase in accounts payable and accrued expenses of $2.4 million, partially offset by a decrease in deferred grant income and other liabilities of $1.6 million, and a decrease of $0.1 million of operating lease liabilities.
The plan allows for the issuance of incentive stock options, non-qualified stock options, restricted stock units, and other forms of equity awards. We recognize equity-based compensation expense for stock options subject to time-based vesting on a straight-line basis over the requisite service period and account for forfeitures as they occur.
We recognize equity-based compensation expense for stock options subject to time-based vesting on a straight-line basis over the requisite service period and account for forfeitures as they occur.
Interest Expense Interest expense was less than $0.1 million for the year ended December 31, 2022, compared to interest expense of $0.9 million for the year ended December 31, 2021.
Interest Expense Interest expense was less than $0.1 million for the year ended December 31, 2023, compared to interest expense of less than $0.1 million for the year ended December 31, 2022. Interest expense was not significant in either period.
Additionally, on August 31, 2022, we modified one of our existing lease agreements with the landlord for approximately 3,706 square feet of lab space at the same location to extend the lease term termination date from June 30, 2023 until June 30, 2026.
Additionally, on August 31, 2022, we modified one of our existing lease agreements with the landlord for approximately 3,706 square feet of lab space at the same location to extend the lease term termination date from June 30, 2023 until June 30, 2026. 114 Table of Contents On July 1, 2021, we entered into an agreement to lease 2,864 square feet of office space in Purchase, New York.
The increase of $11.7 million was primarily due to the following: ● an increase of $11.1 million in clinical programs related to increased Phase 2 trial activity primarily due to increased contract research organization spend; and ● an increase of $2.6 million in personnel costs associated with expanded research and development activities; and ● a decrease of $2.8 million in manufacturing expense related to costs incurred with contract manufacturing organizations for production of pre-clinical and future clinical trial materials associated with our most advanced product candidates due to the timing of the manufacturing of the pre-clinical and clinical trial materials; and ● an increase of $0.9 million in preclinical programs, facilities and other costs primarily due to increased sponsored research spend under grants. 110 Table of Contents General and Administrative Expenses General and administrative expenses were $13.2 million for the year ended December 31, 2022, compared to $10.0 million for the year ended December 31, 2021.
The increase of $6.9 million was primarily due to the following: ● an increase of $5.4 million in clinical programs primarily related to increased Phase 2 trial activities with contract research organizations; ● an increase of $1.7 million in personnel costs associated with expanded research and development activities, and equity-based compensation expense; ● an increase of $1.5 million in preclinical programs, and other expense primarily due to increased research spend; and ● a decrease of $1.7 million in manufacturing related to lower costs with contract manufacturing organizations for the production of pre-clinical and future clinical trial supply. 110 Table of Contents General and Administrative Expenses General and administrative expenses were $13.5 million for the year ended December 31, 2023, compared to $13.2 million for the year ended December 31, 2022.
Overview We are a clinical-stage biopharmaceutical company engaged in the discovery and development of innovative, small molecule therapeutics targeting age-related degenerative diseases and disorders of the central nervous system, or CNS, and retina. Currently available therapies for these diseases are limited, with many diseases having no approved therapies or treatments.
Overview We are a clinical-stage biopharmaceutical company engaged in the discovery and development of innovative, small molecule therapeutics targeting age-related degenerative diseases and disorders of the central nervous system (“CNS”) and retina.
Costs for certain research and development activities are recognized based on the pattern of performance of the individual arrangements, which may differ from the pattern of billings incurred, and are reflected in the consolidated financial statements as prepaid expenses or as accrued research and development expenses. 115 Table of Contents Equity-Based Compensation We maintain an equity-based compensation plan as a long-term incentive for employees, non-employee directors and consultants.
Costs for certain research and development activities are recognized based on the pattern of performance of the individual arrangements, which may differ from the pattern of billings incurred, and are reflected in the consolidated financial statements as prepaid expenses or as accrued research and development expenses.
We cannot assure you that we will ever be profitable or generate positive cash flows from operating activities. 113 Table of Contents Cash Flows The following table summarizes our cash flows for the periods indicated (in thousands): Year Ended December 31, 2022 2021 Cash flows used in operating activities $ (18,533) $ (3,631) Cash flows used in investing activities (171) (27) Cash flows provided by financing activities 5,546 53,201 Effect of exchange rate changes on cash and cash equivalents (1) (11) Net (decrease) increase in cash and cash equivalents $ (13,159) $ 49,532 Operating Activities Net cash used in operating activities for the year ended December 31, 2022 was $18.5 million, which consisted primarily of our net loss of $21.4 million partially offset by net non-cash charges of $3.8 million and a net change of $0.9 million in our operating assets and liabilities.
Cash Flows The following table summarizes our cash flows for the periods indicated (in thousands): Year Ended December 31, 2023 2022 Cash flows used in operating activities $ (16,018) $ (18,533) Cash flows used in investing activities (147) (171) Cash flows provided by financing activities 4,521 5,546 Effect of exchange rate changes on cash and cash equivalents 4 (1) Net decrease in cash and cash equivalents $ (11,640) $ (13,159) Operating Activities Net cash used in operating activities for the year ended December 31, 2023 was $16.0 million, which consisted primarily of our net loss of $25.8 million partially offset by net non-cash charges of $5.0 million and a net change of $4.8 million in our operating assets and liabilities.
Insufficient liquidity may also require us to relinquish rights to product candidates at an earlier stage of development or on less favorable terms than we would otherwise choose.
Insufficient liquidity may also require us to relinquish rights to product candidates at an earlier stage of development or on less favorable terms than we would otherwise choose. We cannot assure you that we will ever be profitable or generate positive cash flows from operating activities.
In addition, in March 2023, we entered into a Purchase Agreement with Lincoln Park Capital Fund, LLC, or Lincoln Park, giving the Company the right, but not the obligation to sell to Lincoln Park up to $35.0 million worth of shares of our common stock. As of December 31, 2022, we had $41.6 million in cash and cash equivalents and have not generated positive cash flows from operations.
In addition, in March 2023, we entered into the Lincoln Park Purchase Agreement with Lincoln Park Capital Fund, LLC, or Lincoln Park, giving the Company the right, but not the obligation to sell to Lincoln Park up to $35 million worth of shares 111 Table of Contents of our common stock.
On December 23, 2022, we entered into a sales agreement with the Sales Agents, providing for the offering, issuance and sale by us of up to $40.0 million of our common stock from time to time in ATM offerings. As of December 31, 2022, we have not sold any shares of common stock under the ATM.
The net proceeds were approximately $5.2 million, after deducting underwriting discounts and commissions and other offering related expenses payable by us. On December 23, 2022, we entered into a sales agreement with the Sales Agents, providing for the offering, issuance and sale by us of up to $40 million of our common stock from time to time in ATM offerings.
The annual base rent under the lease is less than $0.1 million for the first lease year and is subject to annual increases of between 1.82% and 2.04%. We provided a security deposit in the form of a Letter of Credit in the amount of less than $0.1 million pursuant to the terms of the lease.
We provided a security deposit in the form of a Letter of Credit in the amount of less than $0.1 million pursuant to the terms of the lease.
On December 23, 2022, we entered into a sales agreement with Cantor Fitzgerald & Co. and B. Riley Securities, Inc., or the Sales Agents, providing for the offering, issuance and sale by us of up to $40 million of our common stock from time to time in “at-the-market” offerings (the “ATM”).
Riley Securities, Inc., or the Sales Agents, providing for the offering, issuance and sale by us of up to $40 million of our common stock from time to time in “at-the-market” offerings (the “ATM”). For the period ended December 31, 2023, we sold 2,859,074 shares of its common stock pursuant to the ATM for gross proceeds of approximately $5.3 million.
Other Income (Expense), Net Other income, net was less than $0.1 million for the year ended December 31, 2022, compared to other expense, net of less than $0.1 million for the year ended December 31, 2021. Overall, management believes that the change in other expense was not significant in either period.
Other Income (Expense), Net Other income, net was $0.2 million for the year ended December 31, 2023, compared to other expense, net of less than $0.1 million for the year ended December 31, 2022. The change in other income (expense), net was driven primarily by interest earned on money market funds.
As a result, we may face difficulties raising capital through future sales of our common stock or such sales may be on unfavorable terms. 107 Table of Contents Components of Our Results of Operations Operating Expenses Research and Development Expenses Research and development expenses consist primarily of direct and indirect costs incurred for our research activities, including development of our drug discovery efforts and the development of our product candidates.
Components of Our Results of Operations Operating Expenses Research and Development Expenses Research and development expenses consist primarily of direct and indirect costs incurred for our research activities, including development of our drug discovery efforts and the development of our product candidates.
This is partially offset by proceeds received from the exercise of common stock options in the amount of $1.6 million, as well as proceeds from issuance of common stock in our follow-on public offering in the amount of $5.3 million during the year ended December 31, 2022. 114 Table of Contents Contractual Obligations The following table summarizes our contractual obligations as of December 31, 2022 (in thousands): Less than 1 to 3 3 to 5 More than 5 1 Year Years Years years Total Operating lease obligations: $ 209 $ 443 $ 242 $ 126 $ 1,020 Total: $ 209 $ 443 $ 242 $ 126 $ 1,020 In October 2022, we entered into an insurance premium financing arrangement with a lender.
Contractual Obligations The following table summarizes our contractual obligations as of December 31, 2023 (in thousands): Less than 1 to 3 3 to 5 More than 5 1 Year Years Years years Total Operating lease obligations: $ 221 $ 377 $ 175 $ 37 $ 810 Total: $ 221 $ 377 $ 175 $ 37 $ 810 In October 2022, we entered into an insurance premium financing arrangement with a lender.
There was no gain or loss on debt extinguishment for the year ended December 31, 2022. Interest expense Interest expense for the year ended December 31, 2022 consisted of interest expense related to the insurance premium financing arrangement with a lender. Interest expense for the year ended December 31, 2021 primarily consisted of interest expense from our convertible notes.
Interest Expense Interest expense for the years ended December 31, 2023 and 2022 consisted of interest expense related to the insurance premium financing arrangement with a lender.
As of December 31, 2022, the total unrecognized compensation expense related to unvested time-based vesting awards was $6.5 million, which is expected to be recognized over weighted-average remaining vesting period of approximately 2.0 years. 116 Table of Contents Recent Accounting Pronouncements For a description of recent accounting pronouncements, see Note 2 of the notes to our audited consolidated financial statements for the year ended December 31, 2022 included elsewhere in this Annual Report.
As of December 31, 2023, the total unrecognized compensation expense related to unvested time-based vesting awards was $4.3 million, which is expected to be recognized over weighted-average remaining vesting period of approximately 1.6 years.
The change of $0.9 million in interest expense was the result of the convertible notes outstanding balance during the year ended December 31, 2021, which were subsequently converted into shares of our Series B-1 convertible preferred stock in May 2021. 111 Table of Contents Liquidity and Capital Resources Sources of Liquidity To date, we have funded our operations primarily with proceeds from grants awarded by the NIA, and proceeds from the sales of our convertible promissory notes, convertible preferred stock, SAFE, stock option exercises, our IPO and our follow-on public offering.
Liquidity and Capital Resources Sources of Liquidity To date, we have funded our operations primarily with proceeds from grants awarded by the NIA, and proceeds from the sales of our convertible promissory notes, convertible preferred stock, SAFE, stock option exercises, follow-on equity offerings, sales under our ATM and equity line financing, and our IPO.
In connection with the IPO, we received net proceeds of approximately $44.2 million, after deducting underwriting discounts and commissions and other offering related expenses payable by us, which includes net proceeds of approximately $6.3 million from the exercise of the over-allotment option.
In connection with the follow-on public offering, we received net proceeds of approximately $5.2 million, after deducting underwriting discounts and commissions and other offering related expenses. On December 23, 2022, we entered into a sales agreement with Cantor Fitzgerald & Co. and B.
The decrease in cash provided by financing activities relates primarily to the IPO of our stock whereby we received net proceeds of $44.2 million and the issuance of SAFEs whereby we received $8.9 million during the year ended December 31, 2021.
The change in net cash provided by financing activities is primarily related to net proceeds from the issuance of common stock under the ATM program and sale of common stock pursuant to the Lincoln Park Purchase Agreement during the year ended December 31, 2023 as compared to the proceeds from the issuance of common stock in our November 2022 follow-on public offering in the amount of $5.3 million during the year ended December 31, 2022.