Biggest changeThe following table sets forth, for the years indicated, our results of operations (in thousands): Years Ended December 31, 2022 2021 2020 Revenue: Product revenue $ 93,388 $ 84,312 $ 39,612 Service and other revenue 21,987 18,290 10,323 Total revenue 115,375 102,602 49,935 Cost of revenue: Cost of product revenue 82,510 84,639 57,035 Cost of service and other revenue 15,032 10,355 5,937 Total cost of revenue 97,542 94,994 62,972 Gross profit 17,833 7,608 (13,037 ) Operating expenses: Research and development 48,855 36,741 28,850 Sales and marketing 89,482 65,070 45,068 General and administrative 40,515 36,316 30,512 Total operating expenses 178,852 138,127 104,430 Loss from operations (161,019 ) (130,519 ) (117,467 ) Interest income and other income, net 3,291 498 526 Interest expense (3,566 ) (1,715 ) (2,891 ) Loss on extinguishment of term loan (1,367 ) — (1,567 ) Change in fair value of redeemable convertible preferred stock warrant liability — — (93 ) Loss before provision for income taxes (162,661 ) (131,736 ) (121,492 ) Provision for income taxes 295 199 — Net loss $ (162,956 ) $ (131,935 ) $ (121,492 ) Revenue Years Ended December 31, Change (dollars in thousands) 2022 2021 $ % Revenue: Product revenue $ 93,388 $ 84,312 $ 9,076 11 % Service and other revenue 21,987 18,290 3,697 20 % Total revenue $ 115,375 $ 102,602 12,773 12 % Product revenue increased by $9.1 million, or 11%, for the year ended December 31, 2022 as compared to the prior year.
Biggest changeResults of Operations In this section, we discuss the results of our operations for the year ended December 31, 2023 compared to the year ended December 31, 2022. 70 The following table sets forth, for the years indicated, our results of operations (in thousands): Years Ended December 31, 2023 2022 2021 Revenue: Product revenue $ 103,537 $ 93,388 $ 84,312 Service and other revenue 26,839 21,987 18,290 Total revenue 130,376 115,375 102,602 Cost of revenue: Cost of product revenue 74,454 82,510 84,639 Cost of service and other revenue 26,922 15,032 10,355 Total cost of revenue 101,376 97,542 94,994 Gross profit 29,000 17,833 7,608 Operating expenses: Research and development 57,307 48,855 36,741 Sales and marketing 96,232 89,482 65,070 General and administrative 45,231 40,515 36,316 Total operating expenses 198,770 178,852 138,127 Loss from operations (169,770 ) (161,019 ) (130,519 ) Interest income and other income, net 10,171 3,291 498 Interest expense (12,675 ) (3,566 ) (1,715 ) Loss on extinguishment of term loan — (1,367 ) — Loss before provision for income taxes (172,274 ) (162,661 ) (131,736 ) Provision for income taxes 523 295 199 Net loss $ (172,797 ) $ (162,956 ) $ (131,935 ) Revenue Years Ended December 31, Change (dollars in thousands) 2023 2022 $ % Revenue: Product revenue $ 103,537 $ 93,388 $ 10,149 11 % Service and other revenue 26,839 21,987 4,852 22 % Total revenue $ 130,376 $ 115,375 15,001 13 % Product revenue increased by $10.1 million, or 11%, for the year ended December 31, 2023 as compared to the prior year.
Overview Our technology is designed to elevate the dialysis experience for patients and help providers overcome traditional care delivery challenges. Requiring only an electrical outlet and tap water to operate, the Tablo® Hemodialysis System frees patients and providers from the burdensome infrastructure required to operate traditional dialysis machines.
Overview Our technology is designed to elevate the dialysis experience for patients and help providers overcome traditional care delivery challenges. Requiring only an electrical outlet and tap water to operate, Tablo® Hemodialysis System (Tablo) frees patients and providers from the burdensome infrastructure required to operate traditional dialysis machines.
In return for a fair market value service fee, we assign members of our own employed nurses on a temporary basis to support participating providers to launch and manage an inpatient dialysis program 66 using Tablo and, as full-time staff is hired, to help train and onboard those nurses.
In return for a fair market value service fee, we assign members of our own employed nurses on a temporary basis to support participating providers to launch and manage an inpatient dialysis program using Tablo and, as full-time staff is hired, to help train and onboard those nurses.
We continue to use our design, engineering, and manufacturing capabilities to further advance and improve the efficiency of our 67 manufacturing processes, which, if successful, we believe will lower production costs and enable us to increase our gross margin.
We continue to use our design, engineering, and manufacturing capabilities to further advance and improve the efficiency of our manufacturing processes, which, if successful, we believe will lower production costs and enable us to increase our gross margin.
We believe Tablo offers automation and ease-of-use benefits over traditional machines that can enhance our existing and potential customers’ ability to support their patient populations despite staffing shortages.
Moreover, we believe Tablo offers automation and ease-of-use benefits over traditional machines that can enhance our existing and potential customers’ ability to support their patient populations despite staffing shortages.
The net cash outflow from operating assets and liabilities was primarily due to an increase in inventories due to the timing of inventory purchases including advance purchases of inventory to mitigate supply chain disruptions, a decrease in accrued payroll and related benefits, an increase in accounts receivable due to timing of collections, a decrease in accounts payable due to timing of vendor payments, an increase in prepaid expenses and other assets, and a decrease in operating lease liabilities.
The net cash outflow from operating assets and liabilities was primarily due to an increase in inventories due to the timing of inventory purchases including advance purchases of inventory to mitigate supply chain disruptions, a decrease in accrued compensation and related benefits, an increase in accounts receivable due to timing of collections, a decrease in accounts payable due to timing of vendor payments, an increase in prepaid expenses and other assets, and a decrease in operating lease liabilities.
Our sales organization is comprised of our capital sales team, responsible for generating new customer demand for Tablo, and 64 our clinical sales team, responsible for driving utilization and fleet expansion of Tablo consoles at existing customer sites. In addition, our field service team provides maintenance services and product support to Tablo customers.
Our sales organization is comprised of our capital sales team, responsible for generating new customer demand for Tablo, and our clinical sales team, responsible for driving utilization and fleet expansion of Tablo at existing customer sites. In addition, our field service team provides maintenance services and product support to our customers.
In May 2022, we implemented a shipment hold on the distribution and marketing of Tablo for use in the home environment pending the FDA’s review and clearance of a 510(k) application we submitted for changes made since the device’s original March 2020 clearance.
Recent Developments In May 2022, we implemented a shipment hold on the distribution and marketing of Tablo for use in the home environment pending the FDA’s review and clearance of a 510(k) application we submitted for changes made since the device’s original March 2020 clearance.
Consumables, including Tablo cartridges, are recognized primarily upon shipment. Revenue is recognized net of any sales incentive, rebates and any taxes collected from customers. Service and Other Revenue We generate service revenue primarily from service agreements for our Tablo consoles and other revenue from shipping and handling charged to customers.
Consumables are recognized primarily upon shipment. Revenue is recognized net of any sales incentive, rebates and any taxes collected from customers. Service and Other Revenue We generate service revenue primarily from service agreements for our Tablo consoles and other revenue from shipping and handling charged to customers.
While we expect gross margin to increase over the long term, we also anticipate it will likely fluctuate from quarter to quarter. Operating Expenses Research and Development Research and development expenses primarily consist of compensation and personnel costs, regulatory fees, consulting services, laboratory supplies and materials expenses, and infrastructure costs including facilities, depreciation and information technology.
While we expect gross margin to increase over the long term, we also anticipate it will likely fluctuate from quarter to quarter. 69 Operating Expenses Research and Development Research and development expenses primarily consist of personnel and related costs, regulatory fees, consulting services, laboratory supplies and materials expenses, and infrastructure costs including facilities, depreciation and information technology.
Expansion of Tablo within the Home Setting We believe that a significant growth opportunity exists within the home hemodialysis market. We are partnering with innovative dialysis clinic providers and health systems who are motivated to grow their home hemodialysis population, and who share our vision of creating a seamless and supported transition to the home.
Expansion of Tablo within the Home Setting We believe that a significant growth opportunity exists within the home hemodialysis market. We are partnering with innovative dialysis clinic providers, health systems and other adjacent healthcare providers who are motivated to grow their home hemodialysis population, and who share our vision of creating a seamless and supported transition to the home.
Refer to Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, located in our annual report on Form 10-K for the year ended December 31, 2021 for reference to discussion of the year ended December 31, 2020, the earliest of the three fiscal years presented.
Refer to Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, located in our annual report on Form 10-K for the year ended December 31, 2022 for reference to discussion of the year ended December 31, 2022, the earliest of the three fiscal years presented.
We have generated meaningful evidence to demonstrate that providers can realize significant operational efficiencies, including reducing the cost of their dialysis programs by up to 80% in the ICU. In addition, Tablo has been shown to deliver robust clinical care.
We have generated meaningful evidence to demonstrate that providers can realize significant operational efficiencies, including reducing the cost of their dialysis programs by up to 80% in the intensive care unit. In addition, Tablo has been shown to deliver robust clinical care.
We believe that our existing cash, cash equivalents and short-term investments, cash generated from sales, and proceeds received and currently available from the recent debt financing described below under “Debt Obligations ‒ SLR Debt Financing”, will be sufficient to meet our anticipated needs for at least the next 12 months from the issuance date of this Annual Report.
We believe that our existing cash, cash equivalents and short-term investments, cash generated from sales, and proceeds received from the debt financing described below under “Debt 72 Obligations ‒ SLR Debt Financing”, will be sufficient to meet our anticipated needs for at least the next 12 months from the issuance date of this Annual Report.
We have worked closely with our manufacturing partners and suppliers to enable us to source key components and maintain appropriate inventory levels to meet customer demand, and have not experienced material disruptions in our supply chain to date.
From a supply chain perspective, we have worked closely with our manufacturing partners and suppliers to enable us to source key components and maintain appropriate inventory levels to meet customer demand, and have not experienced material disruptions in our supply chain to date.
We recently launched a new pilot clinical and administrative services program designed to help bridge our healthcare provider customers, particularly those challenged by staffing shortages, as they transition from using an outsourced inpatient dialysis provider to offering on-site inpatient dialysis services on their own.
In 2022, we launched a pilot clinical and administrative services program designed to help bridge our healthcare provider customers, particularly those challenged by staffing shortages, as they transition from using an outsourced inpatient dialysis provider to offering on-site inpatient dialysis services on their own.
We repaid in full all amounts due under the SVB Term Loan, including the early repayment fee of $0.3 million and the final payment of $2.0 million, using a portion of the proceeds of the SLR Credit Facilities. Critical Accounting Policies and Estimates Our financial statements have been prepared in accordance with U.S. GAAP.
In November 2022, we terminated the SVB Term Loan and repaid in full all amounts due under such loan, including the early repayment fee of $0.3 million and the final payment of $2.0 million, using a portion of the proceeds of the SLR Credit Facilities. Critical Accounting Estimates Our financial statements have been prepared in accordance with U.S. GAAP.
We determine the SSP based upon the facts and circumstances of each performance obligation (product or services), which often requires management's judgement. We use an observable price to estimate SSP for items that are sold separately, including customer service agreements.
We determine the standalone sale prices (SSP) based upon the facts and circumstances of each performance obligation (product or services), which often requires management's judgement. We use an observable price to estimate SSP for items that are sold separately, including service agreements.
Loss on Extinguishment of Term Loan 68 Loss on extinguishment of term loan is related to the repayment of the Perceptive Term Loan in July 2020 and the SVB Term Loan in November 2022, which included early prepayment and exit fees. Provision for Income Taxes Provision for income taxes primarily consists of foreign taxes in Mexico.
Loss on Extinguishment of Term Loan Loss on extinguishment of term loan is related to the repayment of the SVB Term Loan in November 2022, which included early prepayment and exit fees. Provision for Income Taxes Provision for income taxes primarily consists of foreign taxes in Mexico.
We expect our gross margin to increase over the long term to the extent that we are successful in our ability to lower the costs associated with the production and service of the Tablo console and consumables, that we generate recurring revenues from sales of our consumables, and that we can lower cost of service and other revenue as a percentage of revenue.
We expect our gross margin to increase over the long term to the extent that we are successful in our ability to lower production costs, that we generate recurring revenues from sales of our consumables and services, and that we can lower cost of service and other revenue as a percentage of revenue.
Our field sales and service teams represent 47% of our total full-time employees as of December 31, 2022. The same sales organization and field service team drive Tablo penetration in both the acute and home markets.
Our field sales and service teams represent 48% of our total full-time employees as of December 31, 2023. The same sales organization and field service team drive Tablo penetration in both the acute and home markets.
If we achieve a certain net revenue milestone, calculated on a trailing six-month basis (First Revenue Milestone), on or before June 30, 2024 and the Additional Tranche (as defined below) under the SLR Revolver has been approved, we will be permitted to borrow up to $250.0 million under the SLR Credit Facilities.
If we achieve a certain net revenue milestone, calculated on a trailing six-month basis (First Revenue Milestone), on or before June 30, 2024 and the Additional Tranche (as defined below) under the SLR Revolver has been approved, we will be permitted to borrow up to an additional $50.0 million under the SLR Credit Facilities (i.e., a maximum amount of $250.0 million).
The net cash outflow from operating assets and liabilities was partially offset by an increase in deferred revenue due to the growth of our business and an increase in accrued expenses and other current liabilities.
The net cash outflow from operating assets and liabilities was partially offset by an increase in deferred revenue due to the growth in service agreements and an increase in accrued expenses and other current liabilities.
If we achieve a subsequent additional net revenue milestone, calculated on a trailing six-month basis (Second Revenue Milestone), on or before June 30, 2025 and obtain lenders' credit approval, we will be permitted to borrow up to $300.0 million under the SLR Credit Facilities.
If we achieve a subsequent additional net revenue milestone, calculated on a trailing six-month basis (Second Revenue Milestone), on or before June 30, 2025 and obtain lenders' credit approval, we will be permitted to further borrow up to an additional $50.0 million under the SLR Credit Facilities (i.e., a maximum amount of $300.0 million).
If such contracts result in a material right, we allocate part of the transaction price to that right and recognize the associated revenue when those future goods and services are transferred to the customer. SSP is assigned based on the estimated value of the material right.
If such contracts result in a material right, we allocate part of the transaction price to that right and recognize the associated revenue when those future goods and services are transferred to the customer. SSP is assigned based on the estimated value of the material right. We establish SSP ranges for our products and services and reassess them periodically.
Our gross profit has been and will continue to be, affected by a variety of factors, including market conditions that may impact our pricing; sales mix changes among consoles, consumables, and services; excess and obsolete inventories; our cost structure for manufacturing operations relative to volume; inbound freight costs, and product warranty obligations.
Our gross profit has been and will continue to be, affected by a variety of factors, including market conditions that may impact our pricing; product mix and average selling prices; excess and obsolete inventories; our cost structure for manufacturing operations relative to volume; inbound freight costs, and product warranty obligations.
The increase was primarily due to a $9.6 million increase in consumables revenue attributable to the growth in our console installed base.
The increase was primarily due to a $13.4 million increase in consumables revenue attributable to the growth in our console installed base.
Under the service agreements, we provide maintenance, repair and training services, connectivity to our cloud infrastructure, including TabloHub, as well as software updates, when and if available, for Tablo consoles. The service agreements are typically entered into for a one-year term.
Under the service agreements, we provide maintenance, repair and training services, connectivity to our cloud infrastructure, including TabloHub, as well as software updates, when and if available, for Tablo consoles. The service agreements are typically entered into for a one-year term. Revenue from the sale of service agreements is recognized ratably over the service period.
For example, during 2022, our existing and potential customers faced increasing staffing shortages and increased labor costs, combined with economic pressures resulting from general economic and financial market conditions, primarily escalating inflation, tightening hospital operating budgets and increased scrutiny of capital purchase decisions, all of which generally have the effect of lengthening the average sales cycle and elongating the timing of installations.
During 2022, our existing and prospective customers faced shortages of skilled nurses and other clinical personnel as well as increased labor costs, combined with economic pressures resulting from general economic and financial market conditions, primarily escalating inflation, tightening hospital operating budgets and increased scrutiny of capital purchase decisions, all of which generally have the effect of lengthening the average sales cycle and elongating the timing of installations.
The gross margin percentage improved by 8.1 percentage points for the year ended December 31, 2022 as compared to the prior year. This improvement in gross margin was primarily driven by the impact of our console cost reduction activities and a higher average selling price for consoles.
The gross margin percentage improved by 6.7 percentage points for the year ended December 31, 2023 as compared to the prior year. This improvement in gross margin was primarily driven by the impact of cost reduction activities and a higher average selling price for both consoles and consumables.
In studies and surveys we have conducted, patients have reported quality of life benefits on Tablo compared to other dialysis machines. We believe Tablo empowers patients, who have traditionally been passive recipients of care, to regain agency and ownership of their treatment.
In studies and surveys we have conducted, patients have reported quality of life benefits on Tablo compared to other dialysis machines. We believe Tablo empowers patients, who have traditionally been passive recipients of care, to regain agency and ownership of their treatment. Driving adoption of Tablo in the acute care setting has been our primary focus to date.
As a result, we expect sales and marketing expenses to increase in absolute dollars in future periods. As a percentage of revenue, however, we expect sales and marketing expenses to continue to decrease over the long-term primarily as, and to the extent, our revenue grows.
As a percentage of revenue, however, we expect sales and marketing expenses to continue to decrease over the long-term primarily as, and to the extent, our revenue grows.
Net cash used in operating activities of $130.3 million for the year ended December 31, 2021 was due to a net loss of $131.9 million and a net cash outflow from the change in our operating assets and liabilities of $25.6 million, partially offset by the primary non-cash adjustments for stock-based compensation expense of $17.4 million, depreciation and amortization of $5.2 million, accretion of discount on investments of $2.0 million, non-cash lease expense of $1.0 million, provision for inventories of $1.0 million, and non-cash interest expense of $0.6 million.
Net cash used in operating activities of $145.7 million for the year ended December 31, 2022 was due to a net loss of $163.0 million and a net cash outflow from the change in our operating assets and liabilities of $21.1 million, partially offset by the primary non-cash adjustments for stock-based compensation expense of $27.2 million, depreciation and amortization of $5.2 million, provision for inventories of $2.6 million, loss on extinguishment of term loan of $1.4 million, non-cash lease expense of $1.1 million, accretion of discount on investments of $0.4 million, and non-cash interest expense of $0.4 million.
As of December 31, 2022, we had $100.0 million outstanding under the SLR Term Loan Facility. 72 SVB Term Loan We entered into the SVB Loan and Security Agreement with SVB in July 2020, which provides for a $30.0 million term loan (the SVB Term Loan).
No amounts were outstanding under the SLR Revolver as of December 31, 2023. SVB Term Loan We entered into the SVB Loan and Security Agreement with SVB in July 2020, which provides for a $30.0 million term loan (the SVB Term Loan).
The loss on extinguishment of term loan of $1.4 million was recognized for the repayment of the SVB Term Loan in 2022, which included early prepayment and exit fees. 70 Liquidity and Capital Resources Sources of Liquidity As of December 31, 2022, we had cash, cash equivalents, and short-term investments of $287.5 million, which are available to fund future operations, and restricted cash of $3.3 million, for a total cash, cash equivalents, restricted cash and short-term investments balance of $290.8 million.
The loss on extinguishment of term loan of $1.4 million in 2022 was recognized for the repayment of the SVB Term Loan, which included early prepayment and exit fees. Liquidity and Capital Resources Sources of Liquidity As of December 31, 2023, we had a total cash, cash equivalents, restricted cash and short-term investments balance of $206.7 million.
While the significant accounting policies are more fully described in Note 2 to our audited financial statements included elsewhere in this Annual Report, we believe that the following critical accounting policies are most important to understanding and evaluating our reported financial results. Revenue Recognition We generate our revenue primarily from contracts with customers for the sale of products and services.
While the significant accounting policies are more fully described in Note 2 to our audited financial statements included elsewhere in this Annual Report, we believe that the following critical accounting policy is most important to understanding and evaluating our reported financial results. 74 Revenue Recognition Our contracts with customers often include multiple performance obligations, such as products and services.
If our customers continue to face prolonged staffing shortages, volatility, uncertainty, rising costs and financial pressures, whether due to the ongoing effects of the pandemic, general macroeconomic conditions or otherwise, it could ultimately adversely impact our ability to expand existing customer relationships or attract new customers of Tablo, and have a material adverse effect on our bookings, revenues, results of operations, and, ultimately, our future growth and profitability.
However, if our customers continue to face prolonged periods of rising interest rates, capital budget constraints, volatility, uncertainty, staffing shortages, rising costs and other financial pressures, whether due to general macroeconomic conditions or otherwise, it could ultimately adversely impact our ability to expand existing customer relationships or attract new customers of Tablo, timely collect amounts due, effectively manage our inventory levels, and have a material adverse effect on our bookings, revenues, results of operations, financial condition, and, ultimately, our future growth and profitability.
Cash Flows Summary The following table summarizes the cash flows for each of the periods indicated (in thousands): Years Ended December 31, 2022 2021 2020 Net cash provided by (used in): Operating activities $ (145,729 ) $ (130,264 ) $ (99,015 ) Investing activities (66,295 ) (142,507 ) 3,947 Financing activities 72,898 160,147 385,682 Net increase (decrease) in cash, cash equivalents and restricted cash $ (139,126 ) $ (112,624 ) $ 290,614 Operating Activities Net cash used in operating activities of $145.7 million for the year ended December 31, 2022 was due to a net loss of $163.0 million and a net cash outflow from the change in our operating assets and liabilities of $21.1 million, partially offset by the primary non-cash adjustments for stock-based compensation expense of $27.2 million, depreciation and amortization of $5.2 million, provision for inventories of $2.6 million, loss on extinguishment of term loan of $1.4 million, non-cash lease expense of $1.1 million, accretion of discount on investments of $0.4 million, and non-cash interest expense of $0.4 million.
Cash Flows Summary The following table summarizes the cash flows for each of the periods indicated (in thousands): Years Ended December 31, 2023 2022 2021 Net cash (used in) provided by: Operating activities $ (131,373 ) $ (145,729 ) $ (130,264 ) Investing activities 83,026 (66,295 ) (142,507 ) Financing activities 43,652 72,898 160,147 Net decrease in cash, cash equivalents and restricted cash $ (4,695 ) $ (139,126 ) $ (112,624 ) Operating Activities Net cash used in operating activities of $131.4 million for the year ended December 31, 2023 was due to a net loss of $172.8 million and a net cash outflow from the change in our operating assets and liabilities of $0.8 million, partially adjusted by the primary non-cash adjustments for stock-based compensation expense of $38.6 million, amortization of premium on investments of $6.4 million, depreciation and amortization of $5.8 million, non-cash interest expense of $1.8 million, and non-cash lease expense of $1.3 million.
Service and other revenue increased by $3.7 million, or 20%, for the year ended December 31, 2022 as compared to the prior year.
Service and other revenue increased by $4.9 million, or 22%, for the year ended December 31, 2023 as compared to the prior year.
Since our inception, we have incurred net losses and negative cash flows from operations. To date, we have financed our operations and capital expenditures primarily through sales of redeemable convertible preferred stock and common stock, revenue from sales, debt financings, and proceeds from stock option exercises and employee stock purchases.
To date, we have financed our operations and capital expenditures primarily through sales of redeemable convertible preferred stock and common stock, revenue from sales, debt financings, and proceeds from employee exercises of stock options and employee stock purchase plan purchases.
We believe that transitioning production of a majority of Tablo cartridges during 2022 to a contract manufacturer in Mexico helped us achieve cost reductions through lower freight costs, and that our recent efforts to initiate production of cartridges in-house at our manufacturing facility in Mexico which we operate in collaboration with TACNA will help further our long-term gross margin expansion and supply continuity strategies and improve the flexibility of our operations.
Moreover, we believe that localizing production of a majority of Tablo cartridges in Mexico (to our Mexico-based contract manufacturer and, more recently, in-house at our manufacturing facility) has helped achieve cost reductions through lower freight costs, further our long-term gross margin expansion and supply continuity strategies and improve the flexibility of our operations.
We plan to continue to invest in our research and development efforts, including hiring additional employees, to enhance existing products and develop new products. As a percentage of revenue, we expect research and development expenses to vary over time, depending on the level and timing of the enhancement of the existing products and new product development initiatives.
We plan to continue to invest in our research and development efforts to grow our economic and clinical evidence, enhance existing products and develop new products and service offerings and expect research and development expenses to vary over time, depending on the level and timing of the enhancement of the existing products and new product or service development initiatives.
Sales and marketing expenses increased by $24.4 million, or 38% for the year ended December 31, 2022 as compared to the prior year. The increase was primarily driven by higher headcount, resulting in increased payroll-related and stock-based compensation expense and increased infrastructure costs to support our growth.
Sales and marketing expenses increased by $6.8 million, or 8% for the year ended December 31, 2023 as compared to the prior year. The increase was primarily driven by compensation-related and stock-based compensation expense and infrastructure costs to support our growth. In addition, there were higher freight and marketing expenses due to an increase in sales and marketing activities.
Net cash used in investing activities of $142.5 million for the year ended December 31, 2021 was due primarily to purchases of investment securities of $178.4 million and purchases of property and equipment of $3.1 million, partially offset by the sales and maturities of investment securities of $39.0 million.
Net cash used in investing activities of $66.3 million for the year ended December 31, 2022 was due primarily to purchases of investment securities of $261.2 million and purchases of property and equipment of $8.3 million, partially offset by the maturities of investment securities of $203.2 million.
The SLR Revolving Credit Agreement provides for an asset-based revolving credit facility with aggregate revolving commitments of $25.0 million (the Initial Revolver Commitment). We may request to increase the aggregate revolving commitments by $25.0 million (the Additional Tranche) to an aggregate amount of $50.0 million, subject to ABL Lender’s approval.
We may request to increase the aggregate revolving commitments by $25.0 million (the Additional Tranche) to an aggregate amount of $50.0 million, subject to ABL Lender’s approval.
The increase in interest expense for the year ended December 31, 2022 as compared to the prior year was due to higher Prime Rate in 2022, which was the base interest rate used for the SVB Term Loan, and the higher interest expense and outstanding balance under the SLR Term Loan Facility.
The increase in interest expense for the year ended December 31, 2023 as compared to the prior year was due to the increase in interest rate and a full year of outstanding balance under the SLR Term Loan Facility in 2023 as compared to only two months of outstanding balance of such facility in 2022.
We use this data, in conjunction with our diagnostic and predictive algorithms, to determine failure types and, in some instances, predict failures before they occur. In effect, this contributes to a reduction in service hours and an increase in device uptime.
We use this data, in conjunction with our diagnostic and predictive algorithms, to monitor device performance, identify and diagnose failures and, in some instances, predict and prevent potential future device failures or malfunctions. In effect, this contributes to a reduction in service hours and an increase in device uptime.
Sales and Marketing Sales and marketing expenses primarily consist of compensation and personnel costs, including sales commissions and travel. Other sales and marketing expenses include marketing and promotional activities, government affairs, costs of outside consultants, customer services costs, and infrastructure costs including facilities, depreciation, and information technology.
Other sales and marketing expenses include marketing and promotional activities, government affairs, costs of outside consultants, customer services costs, and infrastructure costs including facilities, depreciation, and information technology. Shipping and handling costs, as well as the associated personnel expenses, are included in sales and marketing expenses.
Tablo leverages cloud technology, making it possible for providers to monitor devices and treatments remotely, perform patient and population analytics, and automate clinical recordkeeping, while also enabling us to release features and enhancements through over-the-air updates. Tablo’s connectedness also allows it to continually stream more than 500,000 device performance data points after every treatment.
Tablo leverages cloud technology, making it possible for providers to monitor devices remotely, view treatment data, perform patient and population analytics, and automate clinical recordkeeping. Tablo's wireless connectivity enables us to release training, new features and enhancements over-the-air without interventions by FSEs. Tablo’s connectedness allows continuous streaming of over 500,000 device performance data points to the cloud for every treatment.
Debt Obligations SLR Debt Financing On November 3, 2022 (the Closing Date), we entered into two senior secured credit facilities, which collectively provide for borrowings of up to $300.0 million: (i) a term loan facility pursuant to a loan and security agreement (the SLR Loan Agreement) among SLR Investment Corp., as collateral agent (Agent), the lenders from time to time party thereto (the Term Loan Lenders) and us (the SLR Term Loan Facility), and (ii) an asset-based revolving credit facility pursuant to a credit agreement (the SLR Revolving Credit Agreement, together with the SLR Loan Agreement, the SLR Credit Facility Agreements) among Gemino Healthcare Finance, LLC d/b/a SLR Healthcare ABL, as lender (ABL Lender), and us (the SLR Revolver, together with the SLR Term Loan Facility, the SLR Credit Facilities).
Net cash provided by financing activities of $72.9 million for the year ended December 31, 2022 was due primarily to the net proceeds of $96.1 million from borrowings under the SLR Term Loan Facility and the proceeds of $8.0 million from employee exercises of stock options and employee stock purchase plan purchases, partially offset by the cash outflow of $31.2 million in repayment of the SVB Term Loan which included early prepayment and exit fees. 73 Debt Obligations SLR Debt Financing On November 3, 2022 (the Closing Date), we entered into two senior secured credit facilities, which collectively provide for borrowings of up to $300.0 million as follows: (i) up to a $250.0 million term loan facility pursuant to a loan and security agreement (the SLR Loan Agreement) among SLR Investment Corp., as collateral agent (Agent), the lenders from time to time party thereto (the Term Loan Lenders) and us (the SLR Term Loan Facility) and (ii) up to a $50.0 million asset-based revolving credit facility pursuant to a credit agreement (the SLR Revolving Credit Agreement, together with the SLR Loan Agreement, the SLR Credit Facility Agreements) among Gemino Healthcare Finance, LLC d/b/a SLR Healthcare ABL, as lender (ABL Lender), and us (the SLR Revolver, together with the SLR Term Loan Facility, the SLR Credit Facilities).
Pursuant to the terms and conditions of the SLR Loan Agreement, the Term Loan Lenders agreed to extend term loans to us in an aggregate principal amount of up to $250.0 million, comprised of (i) a term loan of $100.0 million (the Term A Loan), (ii) one or more term loans (in minimum increments of $20.0 million each) in the aggregate of up to $100.0 million (each, a Term B Loan) and (iii) one or more term loans in the aggregate of up to $50.0 million (each, a Term C Loan).
Under the SLR Loan Agreement, as subsequently amended on December 11, 2023, the Term Loan Lenders agreed to extend term loans to us in an aggregate principal amount of up to $250.0 million, comprised of (i) a term loan of $100.0 million (the Term A Loan), (ii) term loans in an aggregate principal amount of up to $100.0 million that was provided for in two increments, one of $33.5 million (the Term B-1 Loan) and one of $66.5 million (the Term B-2 Loan) and (iii) one or more term loans in an aggregate principal amount of up to $50.0 million (the Term C Loans).
Our product and services revenues are generated primarily through direct sales to customers in the United States. Product Revenue We generate product revenue from the sale, and to a lesser extent, leasing of our Tablo consoles and the sale of related consumables, including Tablo cartridges. Our Tablo consoles and consumables are generally sold without the right of return.
Product Revenue We generate product revenue primarily from the sale of our Tablo consoles, including accessories, and the sale of related consumables, including Tablo cartridges. Our Tablo consoles and consumables are generally sold without the right of return.
Other Income (Expenses), Net Years Ended December 31, Change (dollars in thousands) 2022 2021 $ % Other income (expenses), net: Interest income and other income, net $ 3,291 $ 498 $ 2,793 561 % Interest expense (3,566 ) (1,715 ) (1,851 ) 108 % Loss on extinguishment of term loan (1,367 ) — (1,367 ) * Total other expenses, net $ (1,642 ) $ (1,217 ) (425 ) 35 % * Not meaningful The increase in interest income and other income, net, for the year ended December 31, 2022 as compared to the prior year was driven by higher interest rates and higher average short-term investments balance in 2022.
Other Income (Expenses), Net Years Ended December 31, Change (dollars in thousands) 2023 2022 $ % Other income (expenses), net: Interest income and other income, net $ 10,171 $ 3,291 $ 6,880 209 % Interest expense (12,675 ) (3,566 ) (9,109 ) 255 % Loss on extinguishment of term loan — (1,367 ) 1,367 * Total other expenses, net $ (2,504 ) $ (1,642 ) (862 ) 52 % The increase in interest income and other income, net, for the year ended December 31, 2023 as compared to the prior year was driven by higher interest rates.
In instances where SSP is not directly observable, such as when we do not sell the product or service separately, we determine the SSP using information that may include market conditions and other observable inputs. We may offer additional goods or services to customers at the inception of customer contracts at prices not at SSP.
In instances where SSP is not directly observable, such as when we do not sell the product or service separately, we determine the SSP using information that may include market conditions and other observable inputs and allocate the contracted transaction price to each distinct performance obligation based upon the relative SSP.
Financing Activities Net cash provided by financing activities of $72.9 million for the year ended December 31, 2022 was due primarily to the net proceeds of $96.1 million from borrowings under the SLR Term Loan Facility and the proceeds of $8.0 million from employee exercises of stock options and employee stock purchase plan purchases, partially offset by the cash outflow of $31.2 million in repayment of the SVB Term Loan which included early prepayment and exit fees.
Financing Activities Net cash provided by financing activities of $43.7 million for the year ended December 31, 2023 was due primarily to the net proceeds of $33.2 million from borrowings under the SLR Term Loan Facility and the proceeds of $10.4 million from employee exercises of stock options and employee stock purchase plan purchases.
We have a full valuation allowance for deferred tax assets, including net operating loss carryforwards and tax credits related primarily to research and development. Results of Operations In this section, we discuss the results of our operations for the year ended December 31, 2022 compared to the year ended December 31, 2021.
We have a full valuation allowance for deferred tax assets, including net operating loss carryforwards and tax credits related primarily to research and development.
The maximum amount we are permitted to borrow under the SLR Credit Facilities is subject to certain overall borrowing limitations. We are permitted to borrow up to $200.0 million under the SLR Credit Facilities on the Closing Date.
The maximum amount we are permitted to borrow under the SLR Credit Facilities is subject to certain overall borrowing limitations. As described in further detail below, we have already borrowed $200.0 million of term loans.
This increase was partially offset by a net $0.5 million decrease in console revenue which was primarily comprised of a $2.7 million decrease in console leasing revenue due to the expiration of certain lease agreements, substantially offset by a higher average selling price for consoles.
This increase was partially offset by a $3.3 million decrease in console revenue which was primarily comprised of a $1.7 million decrease in console leasing revenue due to the expiration of certain lease agreements and lower number of consoles sold in the current year as compared to the prior year.
These factors negatively impacted our customer base on pipeline development and installation schedules, which, in turn, negatively impacted our bookings, delayed our shipments and adversely impacted our revenues for 2022.
These factors negatively impacted our customer base on pipeline development and installation schedules, which, in turn, negatively impacted our bookings, delayed our shipments and adversely impacted our revenues for 2022. We have generally seen some stabilization in these challenging labor market dynamics for healthcare providers in 2023 as compared to the prior year.
We are subject to covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.
If we raise additional capital through debt financing (including through our existing debt), we will be subject to an increase in our interest expense which may negatively affect our cash flow. We are subject to covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends.
We believe the ability to leverage one team to serve both markets will result in significant productivity and cost optimization as we continue to scale our business. We generate revenue primarily from the initial sale of Tablo consoles, and recurring sales of consumables, including the Tablo cartridge, which generates significant total revenue over the life of the console.
We believe the ability to leverage one team to serve both markets will result in significant productivity and cost optimization as we continue to scale our business.
Shipping and handling costs, as well as the associated personnel expenses, are included in sales and marketing expenses. As we continue to drive the expansion of Tablo, we expect to continue to invest in our sales and support teams, marketing, and shipping and handling costs.
As we continue to drive the expansion of Tablo, we expect shipping and handling costs to also increase. Additionally, we will continue to invest in infrastructure to support our growth. As a result, we expect sales and marketing expenses to increase in absolute dollars in future periods.
During late 2021, these supply chain disruptions escalated, and, as a result, we faced increased supply chain constraints, notably with the transportation of Tablo cartridges from our contract manufacturing partner in Southeast Asia.
We faced increased supply chain constraints during late 2021, resulting in increased transportation and related costs associated with delivering adequate supply of Tablo treatments to our customers from our contract manufacturing partner in Southeast Asia. During 2023, we saw moderation in these costs.
Our ability to successfully execute on this strategy, and thereby increase our revenue in the acute market, will depend in part on the success of our efforts to further evolve our commercial infrastructure and sales processes to support the growth of our business in the acute care market.
Our ability to successfully execute on this strategy, and thereby increase our revenue in the acute market, will depend on several factors.
In addition, the program may not generate sufficient returns to justify our investment, or may result in unanticipated costs, which could adversely impact our operating margins and results of operations. Components of Operating Results Revenue We generate our revenue primarily from the sale of products and services.
However, our pilot clinical and administrative services program may not be successful in achieving the objectives we intend and anticipate, may fail to meet our customers’ expectations, may not generate sufficient returns to justify our investment, or may result in unanticipated costs, which could harm our reputation and customer relationships, and adversely impact our operating margins and results of operations.
However, there is no assurance that we will not continue to face supply chain constraints. Continued escalation of these supply chain disruptions could negatively impact our ability to meet customer demand on a timely basis, result in customer dissatisfaction and adversely impact our operating margins and results of operations.
However, we may face increased supply 68 chain constraints in the future, which could negatively impact our ability to meet customer demand on a timely basis, result in customer dissatisfaction and adversely impact our operating margins and results of operations. Components of Operating Results Revenue We generate our revenue primarily from the sale of products and services.
Operating Expenses Years Ended December 31, Change (dollars in thousands) 2022 2021 $ % Operating expenses: Research and development $ 48,855 $ 36,741 $ 12,114 33 % Sales and marketing 89,482 65,070 24,412 38 % General and administrative 40,515 36,316 4,199 12 % Total operating expenses $ 178,852 $ 138,127 40,725 29 % Research and development expenses increased by $12.1 million, or 33%, for the year ended December 31, 2022 as compared to the prior year.
Operating Expenses Years Ended December 31, Change 71 (dollars in thousands) 2023 2022 $ % Operating expenses: Research and development $ 57,307 $ 48,855 $ 8,452 17 % Sales and marketing 96,232 89,482 6,750 8 % General and administrative 45,231 40,515 4,716 12 % Total operating expenses $ 198,770 $ 178,852 19,918 11 % Research and development expenses increased by $8.5 million, or 17%, for the year ended December 31, 2023 as compared to the prior year.
The net cash outflow from operating assets and liabilities was primarily due to an increase in inventories due to the timing of inventory purchases including advance purchases of inventory to meet anticipated demand and to mitigate supply chain disruptions, an increase in accounts receivable due to timing of collections, a decrease in accounts payable due to timing of vendor payments and a decrease in operating lease liabilities.
The net cash outflow from operating assets and liabilities was primarily due to an increase in accounts receivable due to timing of collections and billings, a decrease in accrued expenses and other current liabilities, a decrease in accrued compensation and related benefits, and a decrease in operating lease liabilities.
General and Administrative General and administrative expenses primarily consist of compensation and personnel costs, accounting and legal expenses, general corporate expenses, employee recruiting and training costs, and infrastructure costs including facilities, depreciation, and information technology. We expect to incur additional general and administrative expenses due to increased costs for accounting, human resources, legal, insurance and investor relations.
General and Administrative General and administrative expenses primarily consist of personnel and related costs, accounting and legal expenses, general corporate expenses, employee recruiting and training costs, and infrastructure costs including facilities, depreciation, and information technology. As a percentage of revenue, we expect general and administrative expenses to decrease over the long-term primarily as, and to the extent, our revenue grows.
These increases were partially offset by lower consulting expenses.
These increases were partially offset by lower insurance expense and lower supplies and materials.
The increase was primarily due to services associated with the growth in our console installed base, which was offset by a decrease in service revenue from leased consoles due to the expiration of certain lease agreements. 69 Gross Profit and Gross Margin Years Ended December 31, Change (dollars in thousands) 2022 2021 $ % Gross profit and gross margin: Gross profit $ 17,833 $ 7,608 $ 10,225 134 % Gross margin 15.5 % 7.4 % Gross profit increased by $10.2 million, or 134%, for the year ended December 31, 2022 as compared to the prior year.
The increase was primarily due to services associated with the growth in our console installed base, which was partially offset by a $4.1 million decrease in service revenue from leased consoles due to the expiration of certain lease agreements.
In late July 2022, the FDA cleared our 510(k) application of Tablo for patient use in the home and we resumed marketing and shipping Tablo for home use. Driving adoption of Tablo in the acute care setting has been our primary focus to date.
In late July 2022, the FDA cleared our 510(k) application of Tablo for patient use in the home and we resumed marketing and shipping Tablo for home use. In July 2023, we received a warning letter (the “Warning Letter”) from the FDA that raised two observations.
These increases were primarily due to higher headcount, resulting in increased payroll-related and stock-based compensation expense and increased infrastructure costs to support our growth. In addition, there were higher consulting and travel expenses to support our product research and development activities.
This increase was primarily due to compensation-related and stock-based compensation expense, supplies and materials used to support our research and development efforts, and infrastructure costs to support our growth. These increases were partially offset by lower consulting expenses.
Third, we will continue to use our design, engineering and manufacturing capabilities to help further advance and improve the efficiency of our manufacturing processes and lower our costs of production. Fourth, we will continue to utilize our cloud-based data system, as well as enhanced product performance, to help drive down the cost of service.
Further, we will continue to utilize our cloud-based data system, as well as enhanced product performance, to better support our field service team and drive down service costs per console.
In addition, there were higher freight, travel, consulting, and marketing expenses due to an increase in sales and marketing activities. General and administrative expenses increased by $4.2 million, or 12%, for the year ended December 31, 2022 as compared to the prior year.
These increases were partially offset by lower travel and consulting expenses. General and administrative expenses increased by $4.7 million, or 12%, for the year ended December 31, 2023 as compared to the prior year. The increase was primarily driven by compensation-related and stock-based compensation expense and consulting expenses.
For the years ended December 31, 2022, 2021 and 2020, sales of our consoles accounted for 56%, 63% and 66% of our revenue, respectively, sales of our consumables accounted for 25%, 19% and 13% of our revenue, respectively, and sales of services and other accounted for 19%, 18% and 21% of our revenue, respectively.
For the years ended December 31, 2023, 2022, and 2021, sales of our consumables accounted for 32%, 25% and 19% of our revenue, respectively, and sales of service and other accounted for 21%, 19% and 18% of our revenue, respectively. 66 We primarily sell our solutions through our direct sales organization, which covers most major metropolitan markets in the United States.
The Term C Loan(s) are available subject to the lenders’ credit approval and the achievement of the Second Revenue Milestone on or before June 30, 2025. The Term C Loan will remain available for funding until one business day prior to November 1, 2027.
As a result, the outstanding principal amount under the SLR Term Loan Facility is $200.0 million as of the date of this Annual Report. The Term C Loans are available subject to lenders’ credit approval and the achievement of the Second Revenue Milestone on or before June 30, 2025.
As a result of these and other initiatives, we expect general and administrative expenses to vary from period to period and increase in absolute dollars in future periods. However, as a percentage of revenue, we expect general and administrative expenses to decrease over the long-term primarily as, and to the extent, our revenue grows.
As a percentage of revenue, however, we expect research and development expenses to continue to decrease over the long-term primarily as, and to the extent, our revenue grows. Sales and Marketing Sales and marketing expenses primarily consist of personnel and related costs, including sales commissions and travel.
To demonstrate the cost advantages of Tablo in the home setting, we are continuing to collect additional patient clinical experience and outcomes data. We sell our solution through our direct sales organization, which covers most major metropolitan markets in the United States.
To demonstrate the cost advantages of Tablo in the home setting, we are continuing to collect additional patient clinical experience and outcomes data. We generate revenue from the placement of Tablo consoles along with accessories, and shipping and handling charged to customers, which revenue is recognized up-front.
As a result, we cannot predict what effect COVID-19, the associated containment measures, and the related supply chain disruptions will ultimately have on our business and result of operations, on our customers, or on our suppliers and vendors.
As the duration and severity of these macroeconomic conditions remain uncertain and depend on various factors, we cannot predict what effects these macroeconomic conditions will ultimately have on our business and results of operations, our customers, or our suppliers.