iRhythm Technologies Inc.

04/30/2026 | Press release | Distributed by Public on 04/30/2026 15:24

Quarterly Report for Quarter Ending March 31, 2026 (Form 10-Q)

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
You should read the following discussion and analysis of our financial condition and results of operations together with the unaudited condensed consolidated financial statements and related notes included elsewhere in Item 1 of Part I of this Quarterly Report on Form 10-Q. This discussion and other parts of this Quarterly Report on Form 10-Q contain forward-looking statements that involve risks and uncertainties, such as statements of our plans, objectives, expectations and intentions. Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those discussed in the section of this Quarterly Report on Form 10-Q entitled "Risk Factors."
We are a leading digital healthcare company that creates trusted solutions that detect, predict, and prevent disease. Our principal business is the design, development, and commercialization of device-based technology to provide ambulatory cardiac monitoring services that we believe allow clinicians to diagnose certain arrhythmias quicker and with greater efficiency than other services that rely on traditional technology.
Each iRhythm ACM System combines a wire-free, patch-based, 14-day wearable biosensor (FDA-cleared, CE-marked and/or Japan PMDA-approved, as applicable) that continuously records ECG data with a proprietary, cloud-based data analytic software (FDA-cleared, CE-marked, and Japan PMDA-approved) to help physicians monitor patients and diagnose arrhythmias.
Since first receiving clearance from FDA for our technology in 2009, we have supported physician and patient use of this technology and provided ACM services from our Medicare-enrolled IDTFs and with our qualified technicians. We have provided our iRhythm Services using our iRhythm ACM System. Since receiving FDA clearance, we have provided the iRhythm Services via more than twelve million patient reports and have collected over 3 billion hours of curated heartbeat data.
We receive revenue for our iRhythm Services primarily from third-party payors, which include contracted third-party payors and CMS. The remainder of our revenue comes from healthcare institutions, which are typically hospitals or private physician practices, who purchase the iRhythm Services from us directly. We rely on third-party billing partners to submit patient claims and collect from commercial payors, certain government agencies, and patients.
The following are iRhythm Services shown as a percentage of revenue:
Three Months Ended March 31,
2026 2025
Contracted third-party payors 53% 53%
Centers for Medicare & Medicaid Services
26% 24%
Healthcare institutions 15% 17%
Non-contracted third-party payors 6% 6%
Key Business Metric
Non-GAAP Financial Measure
Adjusted EBITDA is a key measure we use to assess our financial performance and it is also used for internal planning and forecasting purposes. We believe Adjusted EBITDA is helpful to investors, analysts, and other interested parties because it can assist in providing a more consistent and comparable overview of our operational performance across our historical financial periods. In addition, this measure is frequently used by analysts, investors, and other interested parties to evaluate and assess performance.
We define Adjusted EBITDA for a particular period as net loss before income tax provision, depreciation and amortization, interest expense, and interest income and as further adjusted for stock-based compensation expense, changes in fair value of strategic investments, impairment charges, business transformation costs, certain intellectual property litigation expenses and settlements, and loss on extinguishment of debt. Business transformation costs include costs associated with professional services, employee termination and relocation, third-party merger and acquisition, integration, and other costs to augment and restructure the organization, inclusive of both outsourced and offshore resources.
Adjusted EBITDA is a non-GAAP financial measure and is presented for supplemental informational purposes only and should not be considered as an alternative or substitute to financial information presented in accordance with GAAP. This measure has certain limitations in that it does not include the impact of certain expenses that are reflected in our unaudited condensed consolidated statements of operations that are necessary to run our business. We may identify additional charges and gains to exclude from Adjusted EBITDA that are significant in nature which may impact period to period comparability and do not represent the ongoing results of the business. Other companies, including other companies in our industry, may not use this measure or may calculate this measure differently than as presented in this Quarterly Report on Form 10-Q, limiting its usefulness as a comparative measure.
The following table presents a reconciliation of Net loss, the most directly comparable financial measure calculated in accordance with GAAP, to Adjusted EBITDA (in thousands):
Three Months Ended March 31,
2026 2025
Net loss1
$ (13,933) $ (30,700)
Interest expense 3,290 3,273
Interest income (4,879) (4,919)
Changes in fair value of strategic investments (1,447) (843)
Income tax provision
500 665
Depreciation and amortization 5,042 5,210
Stock-based compensation 21,491 23,344
Business transformation costs 346 503
Intellectual property litigation expenses 3,689 832
Adjusted EBITDA $ 14,099 $ (2,635)
1 Net loss for the three months ended March 31, 2026 and 2025, includes $0.3 million of acquired in-process research and development expense.
Macroeconomic Factors
Our future results of operations and liquidity could be materially adversely affected by macroeconomic factors contributing to delays in payments of outstanding receivables, supply chain disruptions or shortages, commodity price increases, tariffs on imports, and inflationary pressure, uncertain or reduced demand, a tightening labor market, and the impact of any initiatives or programs that we may undertake to address financial and operational challenges faced by our customers.
The current macroeconomic environment is impacting our customers, both financially and operationally. Hospitals are experiencing staffing shortages and supply chain issues that could affect their ability to provide patient care. Additionally, hospitals are facing significant financial pressure as supply chain constraints and inflation drive up operating costs, interest rate volatility make access to credit more expensive, and unrealized losses decrease available cash reserves. As a consequence of the financial pressures and decreased profitability, some hospitals have indicated that they are lowering their capital investment plans and tightening their operational budgets. Private and government payors around the world are increasingly challenging the utilization and overall cost charged for medical products and services. The containment of healthcare costs has become a priority of governments on a global basis. Private and government payors may decline to cover and reimburse for claims or portions of claims. Climate-related events, including the increasing frequency of extreme weather events, natural disasters, or other catastrophic events may cause damage or disruption to our domestic or global customers or our operations, which could have an adverse effect on our business, operating results, and financial condition.
We have adapted our iRhythm Services to meet the immediate needs of physicians, customers, and patients and significantly increased the utilization of our home enrollment service, which allows patients to receive and wear the single-use Zio patch without going to a healthcare facility.
Our hybrid work arrangements and decision to pursue a sublease have previously resulted in an impairment of our right-of-use asset and related leasehold improvements and furniture and fixtures. As we continue to evaluate our global real estate footprint, we may incur additional impairment charges related to real property lease agreements.
Revenue, net
The majority of our revenue is derived from provision of our iRhythm Services to customers in the United States. We earn revenue from the provision of our iRhythm Services primarily from contracted third-party payors, CMS, and healthcare institutions. A small percentage of our revenue is from non-contracted third-party payors.
We recognize revenue on an accrual basis based on estimates of the amount that will ultimately be realized, which considers the amount submitted for payment and the amount received. These estimates require significant judgment by management. In determining the amount to accrue for the iRhythm Services (including a delivered report), we consider factors such as claim payment history from both payors and patient, available reimbursement, including whether there is a contract between us and the payor or healthcare institution and historical amount received for the service, and any current developments or changes that could impact reimbursement and healthcare institution payments.
We have historically experienced reduced revenue during the third quarter, as well as during the year-end holiday season. We believe this is the result of physicians and patients taking vacations and patients electing to delay our monitoring services during the summer months or holidays. Revenue may be impacted by the outcome of adjudications with contracted and non-contracted payors, as well as changes in CMS reimbursement rates that are updated annually.
Cost of Revenue
Cost of revenue includes direct labor, material costs, tariffs, equipment and infrastructure expenses, amortization of internal-use software, allocated overhead, royalties, and shipping and handling. Direct labor includes payroll-related costs including stock-based compensation involved in manufacturing, clinical data curation, and customer service. Material costs include both the disposable materials costs of the Zio patches and amortization of the PCBAs. Each Zio XT and Zio monitor includes a PCBA, and each Zio AT includes a PCBA and gateway board, the cost of which is amortized over the expected useful life of the board. We expect cost of revenue to increase in absolute dollars as our revenue increases due to increased direct labor, direct materials, and variable spending, as well as amortization of internal-use software, partially offset by economies of scale in relation to fixed costs such as overhead and facilities costs.
Our gross margin has been and will continue to be affected by a variety of factors, including increased contracting with third-party payors and institutional providers. We have in the past been able to increase our pricing as third-party payors become more familiar with the benefits of the iRhythm Services and move to contracted pricing arrangements. We expect increases to the cost of revenues due to increases to materials and electronics components pricing, labor rates, shipping rates, amortization of capitalized internal-use software, along with increases in the general level of inflation and tariffs on imports (which may complicate and increase costs associated with our supply chain). We expect to partially offset these increases by reduced costs from obtaining volume purchase discounts for our material costs, implementing scan-time algorithms and process improvements,
automating manufacturing assembly and packaging, and through software-driven and other workflow enhancements to reduce labor costs. We experienced an improvement in our gross margin from 2023 to 2025, and continue to focus on improving annual gross margins in the future, while navigating through the macroeconomic and supply chain headwinds discussed above that we expect to face.
Research and Development Expenses
We expense research and development costs as they are incurred. Research and development expenses include payroll-related costs, including stock-based compensation, consulting services, clinical studies, laboratory supplies, milestone payments and allocated facility overhead costs. We expect our research and development costs to increase in absolute dollars as we hire additional personnel to develop new product and service offerings, product enhancements, and clinical evidence.
Acquired In-Process Research and Development Expenses
Our in-process research and development ("IPR&D") acquired in an asset acquisition for use in research and development activities with no alternative future use is expensed in the unaudited condensed consolidated statements of operations.
Selling, General and Administrative Expenses
Our sales and marketing expenses consist of payroll-related costs, including stock-based compensation, sales commissions, travel expenses, consulting, public relations costs, direct marketing, tradeshow and promotional expenses, and allocated facility overhead costs.
Our general and administrative expenses consist primarily of payroll-related costs for executive, finance, legal and administrative personnel, including stock-based compensation. Other significant expenses include professional fees for legal and accounting services, consulting fees, recruiting fees, bad debt expense, third-party patient claims processing fees, business transformation, and travel expenses.
Interest Income
Interest income consists of interest income received on our cash and cash equivalents and marketable securities.
Interest Expense
Interest expense is attributable to borrowings under our 2029 Notes. See Note 8, Debt, in the notes to our unaudited condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q for further information on our debt.
Other Income, Net
Other income, net consists primarily of changes in fair value of our strategic loan and equity investments, as well as realized and unrealized foreign currency exchange gains or losses.
Results of Operations
Comparison of the Three Months Ended March 31, 2026 and 2025
Three Months Ended March 31,
2026 2025 $ Change % Change
(in thousands, except percentages) *
Revenue, net $ 199,390 $ 158,677 $ 40,713 26 %
Cost of revenue 58,037 49,461 8,576 17 %
Gross profit 141,353 109,216 32,137 29 %
Operating expenses:
Research and development 21,358 21,519 (161) (1) %
Acquired in-process research and development 296 296 - - %
Selling, general and administrative 135,884 119,957 15,927 13 %
Total operating expenses 157,538 141,772 15,766 11 %
Loss from operations (16,185) (32,556) 16,371 (50) %
Interest and other income, net:
Interest income 4,879 4,919 (40) (1) %
Interest expense (3,290) (3,273) (17) 1 %
Other income, net
1,163 875 288 33 %
Total interest and other income, net
2,752 2,521 231 9 %
Loss before income taxes (13,433) (30,035) 16,602 (55) %
Income tax provision
500 665 (165) (25) %
Net loss $ (13,933) $ (30,700) $ 16,767 (55) %
* Certain numbers expressed may not sum due to rounding.
Revenue, net
Revenue, net increased by $40.7 million, or 26%, to $199.4 million during the three months ended March 31, 2026, as compared to $158.7 million during the three months ended March 31, 2025. The increase in revenue was primarily attributable to an increase in volume of iRhythm Services resulting from increased demand. In particular, during the three months ended March 31, 2026, total revenue volume for both Zio monitor and Zio AT grew, compared to the prior year, resulting from existing and new account growth within our third-party payors, CMS, and healthcare institutions customer groups. We have experienced higher volumes from larger healthcare enterprise accounts which utilize both Zio monitor and Zio AT.
Overall average selling price increased modestly during the three months ended March 31, 2026, as compared to the prior year period. The increase is in part attributable to lower estimated contractual allowance reserves recognized during the three months ended March 31, 2026, as compared to the prior year period. In the first quarter of 2026, we experienced contractual allowance reserve improvements resulting from improved market access, contracting execution, and collection performance. During the first quarter of 2025, we recognized higher contractual allowance reserves, resulting from billing disruptions due to the Change Healthcare cybersecurity incident in the first quarter of 2024, as well as higher payor claim denials. Additionally, during the first quarter of 2026, we also experienced annual reimbursement increases across certain payor categories, including CMS.
Cost of Revenue
Cost of revenue increased by $8.6 million, or 17%, to $58.0 million during the three months ended March 31, 2026, as compared to $49.5 million during the three months ended March 31, 2025. The increase was primarily due to increases in material component costs (inclusive of tariffs), amortization costs related to Zio monitor and Zio AT PCBA, material scrap costs, headcount-related costs, and freight costs associated with the increase in volume of iRhythm Services. Offsetting the increase in cost of revenue for the three months ended March 31, 2026 were lower per unit costs related to our operating efficiencies.
Research and Development Expenses
Research and development expenses decreased by $0.2 million, or 1%, to $21.4 million during the three months ended March 31, 2026, as compared to $21.5 million during the three months ended March 31, 2025. Research and development expenses remained at consistent levels supporting ongoing FDA remediation and sustaining activities, product development consulting, and further development, enhancement, and functionality of our current and future product offerings.
Acquired In-Process Research and Development Expenses
Acquired IPR&D expenses remained flat during the three months ended March 31, 2026, as compared to the three months ended March 31, 2025. See Note 5, Fair Value Measurements, and Note 7, Commitments and Contingencies, in the notes to our unaudited condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q for further details.
Selling, General and Administrative Expenses
Selling, general and administrative expenses increased by $15.9 million, or 13%, to $135.9 million during the three months ended March 31, 2026, as compared to $120.0 million during the three months ended March 31, 2025. For the three months ended March 31, 2026, the increase in selling, general, and administrative expenses were primarily attributable to increases in legal and professional fees for litigation matters, provisions for credit losses, and claims processing fees. Offsetting the increase were lower headcount-related costs (including stock-based compensation). Intellectual property litigation costs relating to our ongoing litigation with Welch-Allyn and BardyDx, wholly-owned subsidiaries of Baxter, during the three months ended March 31, 2026 were $3.7 million, as compared to $0.8 million for the three months ended March 31, 2025. Business transformation costs for the three months ended March 31, 2026 were $0.3 million as compared to $0.5 million for the three months ended March 31, 2025.
Interest Income
Interest income remained flat during the three months ended March 31, 2026, as compared to the three months ended March 31, 2025.
Interest Expense
Interest expense remained flat during the three months ended March 31, 2026, as compared to the three months ended March 31, 2025. The interest expense is primarily attributable to the $661.3 million 2029 Notes borrowed in March 2024.
Other Income, Net
Other income, net increased by $0.3 million to $1.2 million during the three months ended March 31, 2026, as compared to other income, net of $0.9 million during the three months ended March 31, 2025. The increase in other income, net was primarily attributable to increases in the fair value of our strategic loan and equity investments.
Income Tax Provision
Income tax provision decreased by $0.2 million, or 25%, to $0.5 million during the three months ended March 31, 2026, as compared to an income tax provision of $0.7 million during the three months ended March 31, 2025. The income tax provision for each three-month period primarily relates to state and foreign taxes.
On July 4, 2025, legislation referred to as the One Big Beautiful Bill Act ("OBBBA") was signed into law. The OBBBA makes certain provisions of the Tax Cuts and Jobs Act of 2017 permanent and makes changes to some U.S. corporate tax provisions, many of which have different effective dates. Key corporate tax provisions of the OBBBA include the restoration of 100% bonus depreciation, the introduction of new Section 174A permitting immediate expensing of domestic research and experimental expenditures, modifications to Section 163(j) interest expense limitations, and the expansion of Section 162(m) aggregation requirements. We continue to evaluate the impact of the OBBBA, but do not expect the OBBBA to have a material impact on our effective tax rate.
Liquidity and Capital Resources
Overview
As of March 31, 2026, we had cash and cash equivalents of $240.1 million, marketable securities of $309.5 million, and accounts receivable, net of $80.9 million. We continuously review our liquidity and anticipated capital requirements in light of the significant uncertainty created by the current macroeconomic environment, including inflation, interest rate volatility, and potential instability in the global banking system. We intend to continue to make investments to support our business, which may require us to engage in equity or debt financings to secure additional funds.
We believe that our current cash, cash equivalents, and marketable securities balances, together with income to be derived from the sales of our iRhythm Services, will be sufficient to meet our liquidity requirements for at least the next 12 months.
On September 3, 2019, we entered into a Development Collaboration Agreement with Verily Life Sciences LLC, an Alphabet company ("VLS") and Verily Ireland Limited ("VIL" and together with VLS, "Verily") (such Development Collaboration Agreement, as amended by Amendment No. 1 dated April 26, 2021 and Amendment No. 2 dated January 24, 2022, the "Development Agreement"). The Development Agreement involved joint development and production of intellectual property between us and Verily.
In August 2025, we and Verily mutually terminated the Development Agreement, subject to our continued rights to a license to certain intellectual property associated with a mobile app developed under the Development Agreement. During the year ended 2025, we recorded an impairment charge of $2.5 million associated with capitalized internal-use software in development relating to the Zio Watch with our clinically integrated ZEUS system.
On August 30, 2024, we entered into a Technology License Agreement (as amended, the "License Agreement") with BioIS, pursuant to which (i) we will receive a perpetual fully paid up license to certain of BioIS' intellectual property, technology and products for research, development and commercialization of potential next generation products and services in certain fields of use, including (x) an exclusive license to develop and commercialize pulse oximetry, accelerometry, and trending non-invasive blood pressure technologies for use within our ambulatory cardiac monitoring products and services, and (y) a limited, non-exclusive license to develop and commercialize products and services for use in unattended, home-based diagnostic testing and assessment of central and obstructive sleep apnea, and (ii) iRhythm and BioIS agreed to negotiate in good faith a supply agreement for pulse oximetry hardware.
Under the terms of the License Agreement, during the third quarter of 2024 we paid BioIS an upfront fee of $15.0 million in cash consideration. In connection with the License Agreement, we also purchased an aggregate of $40.0 million of convertible promissory notes from BioIS of which $20.0 million of the convertible promissory notes ("Milestone Notes") were designated for satisfaction of our regulatory milestone payment obligations. The Milestone Notes, plus accrued and unpaid interest, if any, will be cancelled, if outstanding, upon the achievement of the regulatory milestones up through December 31, 2026. In June 2025, BioIS achieved the first of two regulatory milestones. As of March 31, 2026, we are in the process of completing all required contractual conditions in order to cancel $10.0 million in Milestone Notes plus accrued and unpaid interest.
The following table summarizes our cash flows for the periods indicated (in thousands):
Three Months Ended March 31,
2026 2025
Net cash used in operating activities
$ (26,173) $ (7,891)
Net cash provided by (used in) investing activities
30,215 (38,139)
Net cash provided by financing activities
149 1,729
Operating Activities
During the three months ended March 31, 2026, cash used in operating activities was $26.2 million, as compared to cash used in operating activities of $7.9 million during the three months ended March 31, 2025. Cash used in operating activities increased by $18.3 million, primarily attributable to a higher level of payments associated with our accrued payroll and related expenses as a result of annual bonuses paid during the first quarter of each year under our annual bonus plan. Additional increases in cash used in operating activities were associated with timing of purchases of inventory and PCBAs. These increases in cash used in operating activities were offset by reductions in our net loss driven by our revenue growth.
Investing Activities
During the three months ended March 31, 2026, cash provided by investing activities was $30.2 million, an increase of $68.4 million, as compared to cash used in investing activities of $38.1 million during the three months ended March 31, 2025. The increase in cash provided by investing activities was primarily attributable to a net increase in the change in marketable securities of $67.3 million, primarily from an increase in the maturities of marketable securities of $127.0 million offset by an increase in purchases of marketable securities of $59.7 million, as well as a decrease in purchases of property and equipment of $2.5 million. These increases in investing activities were offset by purchases of strategic investments of $1.5 million.
Financing Activities
During the three months ended March 31, 2026, cash provided by financing activities was $0.1 million, a decrease of $1.6 million as compared to $1.7 million during the three months ended March 31, 2025. The decrease was related to proceeds from the issuance of common stock primarily from stock option exercises in connection with our employee equity incentive plan.
1.50% Senior Convertible Notes due 2029
On March 7, 2024, we completed an offering of $661.3 million aggregate principal amount of unsecured senior convertible notes with a stated interest rate of 1.50% and a maturity date of September 1, 2029 (the "2029 Notes"). The proceeds include the full exercise of the option granted by us to the initial purchasers of the 2029 Notes to purchase up to an additional $86.3 million aggregate principal amount of notes. Interest on the 2029 Notes is payable semi-annually in arrears on March 1 and September 1 of each year, beginning on September 1, 2024. The net proceeds from the offering, after deducting initial purchasers' discounts and estimated costs directly related to the offering, were $643.8 million. The initial conversion rate of the 2029 Notes is 6.7927 shares per $1,000 principal amount of notes, which is equivalent to a conversion price of approximately $147.22 per share, subject to adjustments. The 2029 Notes may be settled in cash, stock, or a combination thereof, solely at our discretion.
We used approximately $72.4 million of the net proceeds from the offering to pay the cost of the 2029 Capped Calls, as described below. In addition, we used approximately $80.2 million of the net proceeds from the offering for the repayment in full of the indebtedness outstanding from the Initial Tranche of the Braidwell Term Loan Facility (as each such term is defined below). We also used approximately $25.0 million of the net proceeds from the offering to repurchase 229,252 shares of our common stock at a purchase price of $109.05 per share in privately negotiated transactions effected through one of the initial purchasers or its affiliate. These repurchases could increase (or reduce the size of any decrease in) the market price of our common stock, and could result in a higher effective conversion price for the 2029 Notes. We intend to use the remainder of the net proceeds from the offering for general corporate purposes.
No principal payments are due on the 2029 Notes prior to maturity. Other than restrictions relating to certain fundamental changes and consolidations, mergers or asset sales and customary anti-dilution adjustments, the indenture relating to the 2029 Notes includes customary terms and covenants, including certain events of default after which the 2029 Notes may be due and payable immediately.
On January 12, 2026, we implemented the Holding Company Transaction. The Holding Company Transaction constituted a Merger Event as defined under the Indenture. The Holding Company Transaction did not constitute a Fundamental Change or a Make-Whole Fundamental Change as defined under the Indenture. As a result of the Holding Company Transaction, holders of the 2029 Notes had the right to exchange their 2029 Notes at any time up through March 4, 2026, the 35th trading day following the effective date of the Holding Company Transaction.
On January 12, 2026, in connection with the Holding Company Transaction, we entered into a supplemental indenture to the Indenture (the "First Supplemental Indenture") in order to (a) provide that (i) the right to convert each $1,000 principal amount of 2029 Notes into shares of iRhythm Technologies common stock was changed to a right to convert such principal amount of 2029 Notes into shares of our common stock; (ii) iRhythm Technologies shall continue to have the right to determine the form of consideration to be paid or delivered, as the case may be, upon conversion of the 2029 Notes; (iii) any amount payable in cash upon conversion of the 2029 Notes in accordance with the Indenture shall continue to be payable in cash; (iv) any shares of common stock of iRhythm Technologies that iRhythm Technologies would have been required to deliver upon conversion shall instead be deliverable in shares of our common stock; and (v) the Daily VWAP (as defined in the Indenture) shall be calculated based on the value of a share of our common stock; and (b) provide for the full and unconditional guarantee by us of the obligations of iRhythm Technologies under the 2029 Notes and the Indenture.
In connection with the offering of the 2029 Notes, we entered into the privately negotiated capped call transactions (the "2029 Capped Calls") with certain financial institutions. The 2029 Capped Calls will cover, subject to anti-dilution adjustments substantially similar to those applicable to the 2029 Notes, the number of shares of our common stock that will initially underlie the 2029 Notes. The 2029 Capped Calls are expected generally to reduce potential dilution to our common stock upon conversion of the 2029 Notes and/or offset any cash payments that we could be required to make in excess of the principal amount of converted 2029 Notes, as the case may be, with such reduction and/or offset subject to a cap. The 2029 Capped Calls have an initial cap price of $218.10 per share, subject to adjustments, which represents a premium of 100% over the closing price of our common stock of $109.05 per share on The Nasdaq Global Select Market on March 4, 2024. We completed the purchase of the 2029 Capped Calls on March 7, 2024, for the amount of $72.4 million.
Contractual Obligations
Our contractual obligations as of December 31, 2025, are presented in our Annual Report on Form 10-K filed with the SEC on February 19, 2026 (the "Annual Report"). There were no significant changes to our lease obligations during the three months ended March 31, 2026. As of March 31, 2026, our purchase commitments totaled $80.3 million, primarily related to inventory and revenue cycle service fees and expected to be due within a year. See Note 8, Debt, in the notes to our unaudited condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q for changes in our debt obligations during the three months ended March 31, 2026.
Guarantor Information
In connection with the Holding Company Transaction, on January 12, 2026, we, as guarantor, iRhythm Technologies, and U.S. Bank Trust Company, National Association, entered into the First Supplemental Indenture. As of March 31, 2026, there was a $661.3 million aggregate principal amount of issued and outstanding 1.50% Convertible Senior Notes due 2029 of iRhythm Technologies, our wholly owned subsidiary, that are fully and unconditionally guaranteed by us. Accordingly, pursuant to Rule 3-10 of Regulation S-X, separate consolidated financial statements of iRhythm Technologies, Inc. have not been presented. As permitted under Rule 13-01(a)(4)(vi) of Regulation S-X, we have excluded summarized financial information for iRhythm Technologies because the assets, liabilities and results of operations of iRhythm Technologies are not materially different than the corresponding amounts in our consolidated financial statements.
Critical Accounting Policies and Estimates
The discussion and analysis of our financial condition and results of operations are based on our unaudited condensed consolidated financial statements, which we have prepared in accordance with GAAP. The preparation of these unaudited condensed consolidated financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements as well as the reported revenue and expenses during the reporting periods. On an ongoing basis, we evaluate our estimates and judgments. We base our estimates on historical experience and on various other factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
Our significant accounting policies are described in Note 2, Summary of Significant Accounting Policies, to the consolidated financial statements included in the Annual Report. Updates to our significant accounting policies are described in Note 2, Summary of Significant Accounting Policies, in the notes to our unaudited condensed consolidated financial statements in Part 1, Item 1 of this Quarterly Report on Form 10-Q. The critical accounting estimates that are most critical to a full understanding and evaluation of our reported financial results are described in Management's Discussion and Analysis of Financial Condition and Results of Operations in Part II, Item 7 of the Annual Report. There were no material changes to our critical accounting estimates during the three months ended March 31, 2026.
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