Biggest changeYears Ended December 31, Percentage (Dollars in thousands) 2022 2021 Change Functional neurosurgery navigation and therapy Disposable products $ 7,587 $ 7,696 (1) % Services 1,537 375 310 % Subtotal – Functional neurosurgery navigation and therapy 9,124 8,071 13 % Biologics and drug delivery Disposable products 3,690 3,353 10 % Services and license fees 5,430 3,442 58 % Subtotal – Biologics and drug delivery revenue 9,120 6,795 34 % Capital equipment and software Systems and software products 1,512 864 75 % Services 795 569 40 % Subtotal – Capital equipment and software revenue 2,307 1,433 61 % Total revenue $ 20,551 $ 16,299 26 % Functional neurosurgery navigation and therapy revenue, which primarily consists of disposable product commercial sales related to cases utilizing the ClearPoint system, increased 13% to $9.1 million during the year ended December 31, 2022, from $8.1 million for the same period in 2021.
Biggest changeTotal revenue was approximately $24.0 million and $20.6 million for the years ended December 31, 2023 and 2022, respectively. 49 Table of Contents Years Ended December 31, Percentage (Dollars in thousands) 2023 2022 Change Biologics and drug delivery Disposable products $ 2,154 $ 3,690 (42) % Services and license fees 11,448 5,430 111 % Subtotal – Biologics and drug delivery revenue 13,602 9,120 49 % Functional neurosurgery navigation and therapy Disposable products 7,589 7,587 — % Services 931 1,537 (39) % Subtotal – Functional neurosurgery navigation and therapy revenue 8,520 9,124 (7) % Capital equipment and software Systems and software products 860 1,512 (43) % Services 973 795 22 % Subtotal – Capital equipment and software revenue 1,833 2,307 (21) % Total revenue $ 23,955 $ 20,551 17 % Biologics and drug delivery revenue, which include sales of disposable products and services related to customer-sponsored preclinical and clinical trials utilizing our products, increased 49% to $13.6 million for the year ended December 31, 2023, from $9.1 million for the same period in 2022.
Sales and Marketing, and General and Administrative Expenses Our sales and marketing, and general and administrative expenses consist primarily of salaries, incentive-based compensation, travel and benefits, including related share-based compensation; marketing costs; professional fees, including fees for outside attorneys and outside accountants; occupancy costs; insurance; and other general and administrative expenses, which include, but are not limited to, corporate licenses, director fees, hiring costs, taxes, postage, office supplies, information technology and meeting costs.
Sales and Marketing, and General and Administrative Expenses Our sales and marketing, and general and administrative expenses consist primarily of salaries, incentive-based compensation, travel and benefits, including related share-based compensation; marketing costs; professional fees, including fees for outside attorneys and accountants; occupancy costs; insurance; and other general and administrative expenses, which include, but are not limited to, corporate licenses, director fees, hiring costs, taxes, postage, office supplies, information technology and meeting costs.
Cost of Revenue Cost of revenue includes the direct costs associated with the assembly and purchase of components for functional neurosurgery navigation products, biologics and drug delivery products, non-neurosurgery therapy products, and ClearPoint capital equipment that we have sold, and for which we have recognized revenue in accordance with our revenue recognition policy, as well as labor hours for the cost of providing consulting, and service revenue.
Cost of Revenue Cost of revenue includes the direct costs associated with the assembly and purchase of components for functional neurosurgery navigation products, biologics and drug delivery products, non-neurosurgery therapy products, and ClearPoint capital equipment that we have sold, and for which we have recognized revenue in accordance with our revenue recognition policy, as well as labor hours for the cost of providing preclinical, consulting, and service revenue.
We may, in the future, offer and sell additional equity or issue additional notes payable to raise funds for working capital, capital expenditures, or other general corporate purposes. Our primary uses of cash and operating expenses relate to paying employees and consultants, marketing our products, and research and development of future product offerings.
We may, in the future, offer and sell additional equity or issue additional notes payable to raise funds for working capital, capital expenditures, or other general corporate purposes. Our primary uses of cash and operating expenses relate to paying employees and consultants, marketing our products, and supporting our research and development of future product offerings.
Future revenue from sales of our ClearPoint platform products and services is difficult to predict and may not be sufficient to offset our continuing research and development expenses and our increasing selling, general and administrative expenses. Generating recurring revenue from the sale of products is an important part of our business model for our ClearPoint system.
Future revenue from sales of our ClearPoint platform products and services is difficult to predict and may not be sufficient to offset our continuing research and development expenses and our increasing selling, general and administrative expenses. Generating recurring revenue from the sale of products remains an important part of our business model for our ClearPoint system.
Changes in domestic and global economic conditions, supply chain disruptions, labor shortages, as well as other stimulus and spending programs, have led to higher inflation, which is likely to lead to increased costs and may cause changes in fiscal and monetary policy.
Changes in domestic and global economic conditions, supply chain disruptions, labor shortages, as well as other stimulus and spending programs, have led to higher inflation, which is likely to lead to increased costs and may cause further changes in fiscal and monetary policy.
When a contract calls for the satisfaction of multiple performance obligations for a single contract price, we typically allocate the contract price among the performance obligations based on the relative stand-alone prices for each such performance obligation customarily charged by us.
When a contract calls for the satisfaction of multiple performance obligations for a single contract price, we typically allocate the contract price among the performance obligations based on the relative stand-alone selling prices for each such performance obligation customarily charged by us.
In January 2021, we received 510(k) clearance for the SmartFrame Array Neuro Navigation System. In September 2022, the ClearPoint Prism Neuro Laser Therapy System, for which we have exclusive global right to commercialize, received 510(k) clearance through our Swedish partner, CLS. The Prism laser represents the first therapy product we will commercialize.
In January 2021, we received 510(k) clearance for the SmartFrame Array Neuro Navigation System. In September 2022, the ClearPoint Prism Neuro Laser Therapy System, for which we have exclusive global right to commercialize, received 510(k) clearance through our Swedish partner, CLS. The Prism laser represents the first therapy product we have commercialized.
Net cash provided by financing activities in 2022 consisted of proceeds of $0.7 million from the exercise of common stock options and warrants and purchases made under the employee stock 53 Table of Contents purchase plan, partially offset by payments of $0.3 million for taxes related to shares withheld in connection with vesting of restricted stock awards.
Net cash provided by financing activities in 2022 consisted of proceeds of $0.7 million from the exercise of common stock options and warrants and purchases made under the employee stock purchase plan, partially offset by payments of $0.3 million for taxes related to shares withheld in connection with vesting of restricted stock awards.
Our Partners consist of pharmaceutical and biotech companies, academic institutions, or customer-sponsored contract research organizations that 48 Table of Contents are developing methods to deliver a wide variety of molecules, genes or proteins to targeted brain tissue or structures that would need to bypass the blood-brain barrier for the treatment of a variety of disorders.
Our Partners consist of pharmaceutical and biotech companies, academic institutions, or customer-sponsored contract research organizations that are developing methods to deliver a wide variety of molecules, genes or proteins to targeted brain tissue or structures that would need to bypass the blood-brain barrier for the treatment of a variety of disorders.
This increase was primarily due to increases in personnel costs, including share-based compensation expense, of $1.5 million resulting from increases in headcount in our clinical and marketing teams, increases in travel expense of $0.3 million, and increases in marketing activities of $0.2 million. General and Administrative Expenses .
This increase was primarily due to increases in personnel costs, including share-based compensation expense, of $3.0 million resulting from increases in headcount in our clinical and marketing teams, and increases in travel expense of $0.2 million. General and Administrative Expenses .
We utilize risk-free interest rates based on a zero-coupon U.S. treasury instrument, the term of which is consistent with the expected term of the share-based award. We have not paid, and do not anticipate paying, cash dividends on shares of our common stock; therefore, the expected dividend yield is assumed to be zero.
We utilize risk-free interest rates based on U.S. treasury instruments, the term of which is consistent with the expected term of the share-based award. We have not paid, and do not anticipate paying, cash dividends on shares of our common stock; therefore, the expected dividend yield is assumed to be zero.
Our cash balances are typically held in a variety of demand accounts with a view to liquidity and capital preservation.
Our cash balances are primarily held in a variety of demand accounts with a view to liquidity and capital preservation.
Our service revenue was approximately $7.8 million and $4.4 million for the years ended December 31, 2022 and 2021, respectively, of which 70% and 78%, respectively, related to the biologics and drug delivery service line. Our revenue recognition policies are more fully described in Note 2 to the Consolidated Financial Statements elsewhere in this Annual Report.
Our service revenue was approximately $13.4 million and $7.8 million for the years ended December 31, 2023 and 2022, respectively, of which 86% and 70%, respectively, related to the biologics and drug delivery service line. Our revenue recognition policies are more fully described in Note 2 to the consolidated financial statements elsewhere in this Annual Report.
At current interest rates, we expect the interest expense for the next 12 months to be around $0.7 million. • We have lease arrangements related to our office and manufacturing facilities under non-cancellable operating leases.
At current interest rates, we expect the interest expense for the next 12 months to be approximately $0.8 million. • We have lease arrangements related to our office and manufacturing facilities under non-cancellable operating leases.
Our future capital requirements will depend on many factors, including, but not limited to, the following: • the ultimate duration and impact of macroeconomic trends, including the COVID-19 pandemic, inflationary pressures and supply chain disruptions; • the timing of broader market acceptance and adoption of our products; • the scope, rate of progress and cost of our ongoing product development activities relating to our products; • the ability of our Partners to achieve commercial success, including their use of our products and services in their clinical trials and delivery of therapies; • the cost and timing of expanding our sales, clinical support, marketing and distribution capabilities, and other corporate infrastructure; • the cost and timing of establishing inventories at levels sufficient to support our sales; • the effect of competing technological and market developments; • the cost of pursuing additional applications of our technology platforms under current collaborative arrangements, and the terms and timing of any future collaborative, licensing or other arrangements that we may establish; • the cost and timing of any clinical trials; • the cost and timing of regulatory filings, clearances and approvals; and • the cost of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights.
Our future capital requirements will depend on many factors, including, but not limited to, the following: • the ultimate duration and impact of macroeconomic trends, including inflationary pressures, supply chain disruptions, geopolitical instability (including military conflicts), and instability of financial institutions; • the timing of broader market acceptance and adoption of our products; • the scope, rate of progress and cost of our ongoing product development activities relating to our products; • the ability of our Partners to achieve commercial success, including their use of our products and services in their preclinical studies, clinical trials and delivery of therapies; • the cost and timing of expanding our sales, clinical support, marketing and distribution capabilities, and other corporate infrastructure; • the cost and timing of establishing inventories at levels sufficient to support our sales; • the effect of competing technological and market developments; 52 Table of Contents • the cost of pursuing additional applications of our technology platforms under current collaborative arrangements, and the terms and timing of any future collaborative, licensing or other arrangements that we may establish; • the cost and timing of any clinical trials; • the cost and timing of regulatory filings, clearances and approvals; and • the cost of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights.
Product revenue is generally recognized at a point in time, generally upon shipment, however, may be upon delivery based on the contractual terms of the contract. Service revenue is generally recognized over time as the services are delivered to the customer based on the extent of progress towards completion of the performance obligation.
Product revenue is generally recognized at a point in time, generally upon shipment, however, it may be recognized upon delivery based on the contractual terms with certain customers. Service revenue is generally recognized over time as the services are delivered to the customer based on the extent of progress towards completion of the performance obligation.
We recognize revenue when control of our products and services are transferred to our customers in an amount that reflects the consideration we expect to receive from our customers in exchange for those products and services, in a process that involves identifying the contract with a customer, determining the performance obligations in the contract, determining the contract price, allocating the contract price to the distinct performance obligations in the contract, and recognizing revenue when the performance obligations have been satisfied.
Revenue is recognized when control of our products and services are transferred to our customers in an amount that reflects the consideration we expect to receive from our customers in exchange for those products and services, in a process that involves identifying the contract with a customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the distinct performance obligations in the contract, and recognizing revenue when or as the performance obligations have been satisfied.
Net cash flows used in investing activities in 2022 were $10.7 million and consisted primarily of the purchase and maturities of short-term investments and acquisition of equipment and licensing rights. Net cash flows used in investing activities in 2021 were $0.2 million and consisted primarily of equipment acquisitions. Net Cash Flows from Financing Activities .
Net cash flows used in investing activities in 2022 were $10.7 million and consisted primarily of the purchase and maturities of short-term investments and acquisition of equipment licensing rights. Net Cash Flows from Financing Activities .
In management’s opinion, based on our current forecasts for revenue, expense and cash flows, our existing cash and cash equivalent balances and short-term investments at December 31, 2022, are sufficient to support our operations and meet our obligations for at least the next twelve months.
In management’s opinion, based on our current forecasts for revenue, expense and cash flows, our existing cash and cash equivalent balances at December 31, 2023, are sufficient to support our operations and meet our obligations for at least the next twelve months.
Such costs include salaries, travel, and benefits for research and development personnel, including related share-based compensation; materials and laboratory supplies in research and development activities; outside consultant costs; and licensing costs related to technology not yet commercialized.
Such costs include salaries, travel, and benefits for research and development personnel; materials and laboratory supplies in research and development activities; outside consultant costs; and licensing costs related to technology not yet commercialized.
All other software license inventory is classified as a non-current asset. We periodically review our inventory for excess and obsolete items and provide a reserve upon giving consideration to factors such as its physical condition, sales patterns, and expected future demand in order to estimate the amount necessary to write down any slow moving, obsolete, or damaged inventory.
We periodically review our inventory for excess and obsolete items and provide a reserve upon giving consideration to factors such as its physical condition, sales patterns, and expected future demand in order to estimate the amount necessary to write down any slow moving, obsolete, or damaged inventory.
To the extent our Partners achieve commercial success, our expectation is that we will share in such success through our Partners’ use of our products and services in their delivery of therapies. At December 31, 2022, we had more than 50 Partners, as compared with approximately 40 Partners as of the same date in 2021.
To the extent our Partners achieve commercial success, our expectation is that we will share in such success through our Partners’ use of our products and services in their delivery of therapies. At December 31, 2023, we had more than 50 Partners, which is similar to the number of Partners as of the same date in 2022.
Our product revenue was approximately $12.8 million and $11.9 million for the years ended December 31, 2022 and 2021, respectively, and was almost entirely related to our ClearPoint system.
Our product revenue was approximately $10.6 million and $12.8 million for the years ended December 31, 2023 and 2022, respectively, and was almost entirely related to our ClearPoint system.
General and administrative expenses were $9.6 million for the year ended December 31, 2022, compared to $8.0 million for the same period in 2021, an increase of $1.6 million, or 20%.
General and administrative expenses were $11.8 million for the year ended December 31, 2023, compared to $9.6 million for the same period in 2022, an increase of $2.1 million, or 22%.
Impacts from inflationary pressures, such as increasing costs for research and development of our products, administrative and other costs of doing business, and our availability to access capital markets and other sources of funding in the future could adversely affect our business, financial condition and results of operations.
Impacts from inflationary pressures, such as increasing costs for research and development of our products, administrative and other costs of doing business, the potential for instability of the financial institutions where we maintain our deposits or other assets, and our access to capital markets and other sources of funding in the future could adversely affect our business, financial condition and results of operations.
Sales and Marketing Expenses. Sales and marketing expenses were $9.4 million for the year ended December 31, 2022, compared to $7.2 million for the same period in 2021, an increase of $2.1 million, or 30%.
Sales and marketing expenses were $12.6 million for the year ended December 31, 2023, compared to $9.4 million for the same period in 2022, an increase of $3.2 million, or 35%.
Cost of Revenue and Gross Profit. Cost of revenue was $7.0 million, resulting in gross profit of $13.5 million and gross margin of 66%, for the year ended December 31, 2022, compared to $5.2 million, resulting in gross profit of $11.1 million and gross margin of 68% for the year ended December 31, 2021.
Cost of revenue was $10.3 million, resulting in gross profit of $13.6 million and gross margin of 57%, for the year ended December 31, 2023, compared to $7.0 million, resulting in gross profit of $13.5 million and gross margin of 66% for the year ended December 31, 2022.
Actual results may differ materially from these estimates under different assumptions or conditions. 49 Table of Contents While our significant accounting policies are more fully described in Note 2 to our Consolidated Financial Statements included elsewhere in this Annual Report, we believe that the following accounting policies and estimates are most critical to a full understanding and evaluation of our reported financial results.
While our significant accounting policies are more fully described in Note 2 to our consolidated financial statements included elsewhere in this Annual Report, we believe that the following accounting policies and estimates are most critical to a full understanding and evaluation of our reported financial results. Revenue Recognition .
The lease term will commence on June 1, 2023 and end on May 31, 2033. Factors Which May Influence Future Results of Operations The following is a description of factors which may influence our future results of operations, and that we believe are important to an understanding of our business and results of operations.
Factors Which May Influence Future Results of Operations The following is a description of factors which may influence our future results of operations, and that we believe are important to an understanding of our business and results of operations.
Macroeconomic Trends We continue to monitor the impact of various macroeconomic trends, such as global economic and supply chain disruptions, geopolitical instability, labor shortages and inflationary conditions, and the continuing impacts of the COVID-19 pandemic.
Macroeconomic Trends We continue to monitor the impacts of various macroeconomic trends, such as global economic and supply chain disruptions, geopolitical instability (including instability resulting from military conflicts), labor shortages, instability of financial institutions and inflationary conditions.
Capital equipment and software revenue, consisting of sales of ClearPoint reusable hardware and software, and of related services, increased 61% to $2.3 million for the year ended December 31, 2022, from $1.4 million for the same period in 2021. This increase is due primarily to an increase in the placements of ClearPoint capital and software.
Capital equipment and software revenue, consisting of sales of ClearPoint reusable hardware and software and related services, decreased 21% to $1.8 million for the year ended December 31, 2023, from $2.3 million for the same period in 2022, due primarily to a decrease in the placements of ClearPoint capital and software. Cost of Revenue and Gross Profit.
The accounting estimates that require our most significant, difficult and subjective judgments are discussed below. We evaluate our estimates and judgments on an ongoing basis.
The accounting estimates that require our most significant, difficult and subjective judgments are discussed below. We evaluate our estimates and judgments on an ongoing basis. Actual results may differ materially from these estimates under different assumptions or conditions.
Results of Operations Comparison of the Year Ended December 31, 2022 to the Year Ended December 31, 2021 Year Ended December 31, Percentage (Dollars in thousands) 2022 2021 Change Product revenue $ 12,789 $ 11,913 7 % Service and other revenue 7,762 4,386 77 % Total revenue 20,551 16,299 26 % Cost of revenue 7,020 5,176 36 % Gross profit 13,531 11,123 22 % Research and development costs 10,894 9,281 17 % Sales and marketing expenses 9,358 7,217 30 % General and administrative expenses 9,611 7,999 20 % Other income (expense): Other expense, net (22) (63) NM% Interest expense, net (81) (973) (92) % Net loss $ (16,435) $ (14,410) 14 % NM - The percentage change is not meaningful.
Results of Operations Comparison of the Year Ended December 31, 2023 to the Year Ended December 31, 2022 Year Ended December 31, Percentage (Dollars in thousands) 2023 2022 Change Product revenue $ 10,603 $ 12,789 (17) % Service and other revenue 13,352 7,762 72 % Total revenue 23,955 20,551 17 % Cost of revenue 10,341 7,020 47 % Gross profit 13,614 13,531 1 % Research and development costs 11,709 10,894 7 % Sales and marketing expenses 12,595 9,358 35 % General and administrative expenses 11,756 9,611 22 % Other income (expense): Other expense, net (29) (22) NM% Interest income (expense), net 386 (81) 577 % Net loss $ (22,089) $ (16,435) 34 % NM - The percentage change is not meaningful.
Our short- and long-term liquidity requirements include the following obligations: • We have a $10 million secured convertible note payable due in January 2025. Future interest payments associated with the note are variable based on the three (3)-month London Interbank Offered Rate (“LIBOR”) plus 2% (the reference to LIBOR will need to be replaced by June 30, 2023).
Our short- and long-term liquidity requirements include the following obligations: • We have a $10 million secured convertible note payable due in January 2025. Future interest payments associated with the note are variable based on the greater of (i) three (3)-month Secured Overnight Financing Rate (“SOFR”) or (ii) 2%, plus a margin of 2%.
Net cash flows used in operating activities for the year ended December 31, 2022 were $16.2 million, an increase of $3.5 million from the year ended December 31, 2021.
Net cash flows used in operating activities for the year ended December 31, 2023 were $13.7 million, a decrease of $2.4 million from the year ended December 31, 2022.
We do not believe there is a reasonable likelihood that there will be a material change in estimates or assumptions used to 50 Table of Contents determine share-based compensation expense. However, if actual results are not consistent with our estimates or assumptions, we may be exposed to changes in share-based compensation expense that could be material.
We do not believe there is a reasonable likelihood that there will be a material change in estimates or assumptions used to determine share-based compensation expense.
Net cash provided by financing activities in 2021 consisted of: (a) the proceeds, net offering costs, of $46.8 million received from the public offering of our common stock; (b) proceeds from the exercise of common stock options and warrants aggregating $0.5 million; and (c) issuance of common stock under the employee stock purchase plan of $0.2 million, which were partially offset by tax payments of $0.6 million related to shares withheld in connection with vesting of restricted stock awards.
Net cash provided by financing activities in 2023 consisted of proceeds of $0.5 million from the issuance of common stock under the employee stock purchase plan, partially offset by payments of $0.2 million for taxes related to shares withheld in connection with vesting of restricted stock awards.
Revenues In 2010, we received 510(k) clearance from the FDA to market our ClearPoint system in the U.S. for general neurosurgical procedures; in February 2011 and May 2018, we also obtained CE marking for our ClearPoint system and SmartFlow cannula, respectively; and in June 2020 we obtained CE marking for version 2.0 of our ClearPoint software and our Inflexion head fixation frame.
The rapid development and fluidity of these situations precludes any prediction as to the ultimate impact they will have on our business, financial condition, results of operation and cash flows, which will depend largely on future developments . 46 Table of Contents Revenues In 2010, we received 510(k) clearance from the FDA to market our ClearPoint system in the U.S. for general neurosurgical procedures; in February 2011 and May 2018, we also obtained CE marking for our ClearPoint system and SmartFlow cannula, respectively; and in June 2020 we obtained CE marking for version 2.0 of our ClearPoint software and our Inflexion head fixation frame.
These estimates could vary from actual amounts based upon future economic conditions, customer inventory levels, or competitive factors that were not foreseen or did not exist when the estimated write-downs were made. Share-Based Compensation.
These estimates could vary from actual amounts based upon future economic conditions, customer inventory levels, or competitive factors that were not foreseen or did not exist when the estimated write-downs were made. Share-Based Compensation. We account for compensation for all arrangements under which employees and others receive shares of stock or other equity instruments (including options) based on fair value.
This increase consisted of a higher net loss of $2.0 million and the effects of net changes of operating assets and liabilities of $2.6 million, partially offset by a change in non-cash items of $1.2 million.
This decrease consisted of a net decrease in operating assets and liabilities of $3.9 million, and a net increase in non-cash items of $4.2 million, partially offset by an increase in net loss of $5.7 million.
In 2021, we launched the SmartFrame Array Neuro Navigation System and Software, which allows for operating room placement of the ClearPoint system. 2022 Developments • We commenced the limited market commercialization of the ClearPoint Prism Neuro Laser Therapy System.
In 2021, we launched the SmartFrame Array Neuro Navigation System and Software, which allows for operating room placement of the ClearPoint system, and in 2024, we commenced limited market release of the SmartFrame OR Stereotactic System, which allows for complete procedures to be performed 45 Table of Contents in the operating room.
Since inception, we have financed our operations principally from the sale of equity securities and the issuance of notes payable.
In addition, our use of cash from operations amounted to $13.7 million for the year ended December 31, 2023. Since inception, we have financed our operations principally from the sale of equity securities and the issuance of notes payable.
The selection of the method used to measure progress towards completion requires judgment and is based on the nature of the products or services to be provided. We recognize revenue for satisfied performance obligations only when we determine there are no uncertainties regarding payment terms or transfer of control. Inventory .
The selection of the method used to measure progress towards completion requires judgment and is based on the nature of the products or services to be provided.
The change in operating assets and liabilities is primarily due to the use of cash for the buildup of inventory stock in response to supply chain disruptions and the change in the non-cash items results from increases in share-based compensation. Net Cash Flows from Investing Activities.
The change in the non-cash items results primarily from increases in share-based compensation and allowance for credit losses. Net Cash Flows from Investing Activities.
Inventory is carried at the lower of cost (first-in, first-out method) or net realizable value. Items in inventory relate predominantly to our functional neurosurgical products, drug delivery and biologic products, therapy products and ClearPoint capital equipment. Software license inventory related to ClearPoint systems undergoing on-site customer evaluation is included in inventory in the accompanying consolidated balance sheets.
A revenue reversal is possible if it is determined that achievement of a milestone which was previously deemed probable, will not occur. Inventory . Inventory is carried at the lower of cost (first-in, first-out method) or net realizable value. Items in inventory relate predominantly to our functional neurosurgical products, drug delivery and biologic products, therapy products and ClearPoint capital equipment.
This increase was due primarily to increases in personnel costs and share-based compensation of $1.5 million, IT costs of $0.3 million, insurance costs of $0.2 million, offset by a decrease in bad debt expense of $0.3 million. Interest Expense.
The increase was due primarily to increases in personnel costs, including share-based compensation expense, of $1.2 million due to growth in headcount, partially offset by a decrease of $0.6 million in research costs as a result of reprioritization of certain initiatives. Sales and Marketing Expenses.
To estimate the expected terms, we utilize the simplified method for “plain vanilla” options discussed in the SEC’s Staff Accounting Bulletin 107, or SAB 107. We believe that all factors listed within SAB 107 as prerequisites for utilizing the simplified method apply to us and to our share-based compensation arrangements.
We believe that all factors listed within SAB 107 as prerequisites for utilizing the simplified method apply to us and to our share-based compensation arrangements. We intend to utilize the simplified method for the foreseeable future until more detailed information about exercise behavior becomes available. Expected volatility is based on historical volatility of our common stock.
We may also at times enter into long-term commitments or license and collaboration agreements which require commitments that are noncancellable. The total amount as of December 31, 2022 for unfulfilled purchase orders and long-term purchase commitments is $5.5 million, of which approximately 60% is expected to be paid in 2023.
We may also at times enter into long-term commitments or license and collaboration agreements which require commitments that are noncancellable.
Research and development costs were $10.9 million for the year ended December 31, 2022, compared to $9.3 million for the same period in 2021, an increase of $1.6 million, or 17%. The increase was due primarily to increases in personnel costs, including share-based compensation expense, of $1.4 million due to growth in headcount and $0.1 million increase in regulatory fees.
This increase was due primarily to an increase in the allowance for credit losses of $1.4 million and increased share-based compensation of $0.8 million. 50 Table of Contents Interest Expense. Net interest income for the year ended December 31, 2023 was $0.4 million, compared with $0.1 million in net interest expense for the same period in 2022.
Liquidity and Capital Resources We have incurred net losses since our inception, which has resulted in a cumulative deficit at December 31, 2022 of approximately $150 million. In addition, our use of cash from operations amounted to $16.2 million for the year ended December 31, 2022.
Additional information with respect to the 2020 Secured Convertible Note is in Note 7 to the consolidated financial statements included elsewhere in this Annual Report. Liquidity and Capital Resources We have incurred net losses since our inception, which has resulted in a cumulative deficit at December 31, 2023 of approximately $172 million.
Additional information with respect to the Secured Notes is in Note 7 to the consolidated financial statements included elsewhere in this Annual Report. Interest expense was partially offset by higher interest income in the year ended December 31, 2022, as a result of increasing interest rates and the Company's investment in U.S. Government debt securities.
Additional information with respect to the 2020 Secured Notes is in Note 7 to the consolidated financial statements included elsewhere in this Annual Report. As a result of these transactions and our business operations, our cash and cash equivalents totaled $23.1 million at December 31, 2023.
Cash Flows Cash activity for the years ended December 31, 2022 and 2021 is summarized as follows: Years Ended December 31, (in thousands) 2022 2021 Cash from operating activities $ (16,167) $ (12,697) Cash from investing activities (10,736) (168) Cash from financing activities 409 46,875 Net change in cash and cash equivalents $ (26,494) $ 34,010 Net Cash Flows from Operating Activities.
The total amount as of December 31, 2023 for unfulfilled purchase orders and long-term purchase commitments is $3.0 million, of which approximately 40% is expected to be paid in 2024. 51 Table of Contents Cash Flows Cash activity for the years ended December 31, 2023 and 2022 is summarized as follows: Years Ended December 31, (in thousands) 2023 2022 Cash used in operating activities $ (13,720) $ (16,167) Cash provided by (used in) investing activities 8,949 (10,736) Cash provided by financing activities 296 409 Net change in cash and cash equivalents $ (4,475) $ (26,494) Net Cash Flows from Operating Activities.
Currently, we have more than 50 partners who are pharmaceutical/biotech companies, academic institutions, and contract research organizations, who are evaluating or using our products and services in trials to inject gene and cell therapies directly into the brain. Our ClearPoint system is in commercial use in the U.S., the EU, and the United Kingdom.
Our services include protocol consultation and solutions for preclinical study design and execution. Currently, we have more than 50 biologics and drug delivery customers who are evaluating using our products and services in trials to inject gene and cell therapies directly into the brain.
The fair values of our share-based awards are estimated on the grant dates using the Black-Scholes valuation model. This valuation model requires the input of highly subjective assumptions, including the expected stock volatility, estimated award terms and risk-free interest rates for the expected terms.
This valuation model requires the input of highly subjective assumptions, including the expected stock volatility, estimated award terms and risk-free interest rates for the expected terms. To estimate the expected terms, we utilize the simplified method for “plain vanilla” options discussed in the SEC’s Staff Accounting Bulletin 107, or SAB 107.
This increase is attributable to a $2.0 million increase in service and license revenue and $0.3 million increase in product revenue for the year ended December 31, 2022, due to expanded commitments from our current biologics and drug delivery partners as well as an increase in new partners.
This increase is attributable to a $6.0 million increase in service revenue related to new preclinical studies and services entered into with our partners for the year ended December 31, 2023, compared to the same period in 2022, partially offset by a $1.5 million decrease in product revenue.
Additionally, these trends could adversely affect our customers, which could impact their willingness to spend on our products and services. The rapid development and fluidity of these situations precludes any prediction as to the ultimate impact they will have on our business, financial condition, results of operation and cash flows, which will depend largely on future developments.
Additionally, these trends could adversely affect our customers, which could impact their willingness to spend on our products and services, or their ability to make payments, which could harm our collection of accounts receivable and financial results.
We account for compensation for all arrangements under which employees and others receive shares of stock or other equity instruments (including options and warrants) based on fair value. The fair value of each award is estimated as of the grant date and amortized as compensation expense over the requisite vesting period.
The fair value of each award is estimated as of the grant date and amortized as compensation expense over the requisite vesting period. The fair values of our share-based awards are estimated on the grant dates using the Black-Scholes valuation model.
We anticipate that, over time, our research and development costs may increase as we: (i) continue to develop enhancements to our ClearPoint system and SmartFlow cannula; and (ii) seek to expand the application of our technological platforms. From our inception through December 31, 2022, we have incurred approximately $81 million in research and development expenses.
We anticipate that, over time, our research and development costs may increase as we: (i) develop devices and services for delivery of therapeutics into 47 Table of Contents the central nervous system, (ii) expand products into the OR and therapeutics space, and (iii) expand the application of our technological platforms internationally.
This is primarily driven by $1.5 million of service revenue related to development services for the year ended December 31, 2022, compared to $0.4 million for the same period in 2021. 51 Table of Contents Biologics and drug delivery revenue, which include sales of disposable products and services related to customer-sponsored pre-clinical and clinical trials utilizing our products, increased 34% to $9.1 million for the year ended December 31, 2022, from $6.8 million for the same period in 2021.
Functional neurosurgery navigation and therapy revenue, which primarily consists of disposable product commercial sales related to cases utilizing the ClearPoint system, decreased 7% to $8.5 million during the year ended December 31, 2023, from $9.1 million for the same period in 2022.
Additional information with respect to the 2020 Secured Notes is in Note 7 to the consolidated financial statements included elsewhere in this Annual Report. 52 Table of Contents As discussed in Note 9 to the consolidated financial statements included elsewhere in this Annual Report, on February 23, 2021, we completed a public offering of 2,127,660 shares of our common stock.
As discussed in Note 11 to the consolidated financial statements included elsewhere in this Annual Report, on March 4, 2024 we completed a public offering of 2,307,694 shares of our common stock. Net proceeds from the offering were approximately $14.0 million after deducting the underwriting discounts and commissions and other estimated offering expenses payable by us.
Net interest expense for the year ended December 31, 2022 was $0.1 million, compared with $1.0 million for the same period in 2021, due to lower interest expense as a result of the conversion of a portion of the 2020 Secured Convertible Notes in May and November 2021.
The decrease is driven by lower service revenue of $0.6 million as a result of pausing a co-development program with one of our Brain Computer Interface partners for the year ended December 31, 2023, compared to the same period in 2022.
The first foundational part is a medical device company providing medical devices for neurosurgery applications. The second part is focused on partnerships in the drug and delivery space.
The first foundational part of our business is a medical device company providing medical devices for neurosurgery applications. Our primary medical device product, the ClearPoint system, is an integrated system comprised of hardware components, disposable components, and intuitive, menu-driven software, which is in commercial use globally.