Boston Scientific 10-Q 2026-03-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

For the quarterly period ended March 31, 2026

OR

Commission File No. 1-11083

BOSTON SCIENTIFIC CORPORATION

(Exact name of registrant as specified in its charter)

300 Boston Scientific Way**,** Marlborough**,** Massachusetts 01752-1234

(Address of Principal Executive Offices) (Zip Code)

508 683-4000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☑ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☑

The number of shares outstanding of Common Stock, $0.01 par value per share, as of April 29, 2026 was 1,486,355,179.

TABLE OF CONTENTS

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q (this Quarterly Report) contains statements that constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements may be identified by words like “anticipate,” “expect,” “project,” “believe,” “plan,” “estimate,” “intend,” “aim,” "goal," "target," "continue," "hope," "may" and similar words. These forward-looking statements include, among other things, statements regarding our financial and operating performance; acquisitions; clinical trials; business plans and product performance; new and anticipated product approvals and launches; intellectual property; regulations and accounting pronouncements; legal proceedings; tax matters and regulations; and macroeconomic and geopolitical conditions. These forward-looking statements are based on our beliefs, assumptions and estimates using information available to us at the time and are not intended to be guarantees of future events or performance. If our underlying assumptions turn out to be incorrect, or if certain risks or uncertainties materialize, actual results could vary materially from the expectations and projections expressed or implied by our forward-looking statements.

The forward-looking statements in this Quarterly Report are based on certain risks and uncertainties, including the risk factors described in Item 1A under the heading Risk Factors in our most recent Annual Report on Form 10-K and the specific risk factors discussed herein and in connection with forward-looking statements made throughout this Quarterly Report, which could cause actual results to vary materially from the expectations and projections expressed or implied by our forward-looking statements. These risks and uncertainties, in some cases, have affected and in the future could affect our ability to implement our business strategy and may cause actual results to differ materially from those contemplated by the statements expressed in this Quarterly Report. As a result, readers are cautioned not to place undue reliance on any of our forward-looking statements. Risks and uncertainties that may cause such differences include, among other things: economic conditions, including the impact of foreign currency fluctuations; future U.S. and global political, competitive, reimbursement and regulatory conditions, including changing trade and tariff policies; geopolitical events, conflicts and tensions; manufacturing, distribution and supply chain disruptions and cost increases; disruptions caused by cybersecurity events; disruptions caused by public health emergencies or extreme weather or other climate change-related events; labor shortages and increases in labor costs; variations in outcomes of ongoing and future clinical trials and market studies; new product introductions and the market acceptance of those products; market competition for our products; expected pricing environment; expected procedural volumes; the closing and integration of acquisitions; demographic trends; intellectual property rights; litigation; financial market conditions; the execution and effect of our restructuring program; the execution and effect of our business strategy, including our cost-savings and growth initiatives; our ability to achieve sustainability goals; and future business decisions made by us and our competitors. New risks and uncertainties may arise from time to time and are difficult to predict. All of these factors are difficult or impossible to predict accurately and many of them are beyond our control. For a further list and description of these and other important risks and uncertainties that may affect our future operations, see Item 1A. Risk Factors in our most recent Annual Report on Form 10-K, which we may update in Part II, Item 1A. Risk Factors in Quarterly Reports on Form 10-Q that we have filed or will file hereafter. We disclaim any intention or obligation to publicly update or revise any forward-looking statement to reflect any change in our expectations or in events, conditions, or circumstances on which those expectations may be based, or that may affect the likelihood that actual results will differ from those contained in the forward-looking statements, except as required by law. This cautionary statement is applicable to all forward-looking statements contained in this Quarterly Report.

PART I

FINANCIAL INFORMATION

BOSTON SCIENTIFIC CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

Refer to notes to the unaudited consolidated financial statements. Amounts may not add due to rounding.

BOSTON SCIENTIFIC CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED)

Refer to notes to the unaudited consolidated financial statements. Amounts may not add due to rounding.

BOSTON SCIENTIFIC CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (UNAUDITED)

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Introduction

Boston Scientific Corporation is a global developer, manufacturer and marketer of medical devices that are used in a broad range of interventional medical specialties. Our mission is to transform lives through innovative medical solutions that improve the health of patients around the world. As a medical technology leader for more than 45 years, we have advanced the practice of less-invasive medicine by helping physicians and other medical professionals diagnose and treat a wide range of diseases and medical conditions and improve patients’ quality of life by providing alternatives to surgery and other medical procedures that are typically traumatic to the body. We advance science for life by providing a broad range of high performance solutions to address unmet patient needs and reduce the cost of healthcare. When used in this report, the terms "we," "us," "our" and "the Company" mean Boston Scientific Corporation and its divisions and subsidiaries.

Executive Summary

The following section describes some of our financial highlights and trends on a consolidated basis. For additional information on our business units and product offerings, refer to Item 1. Business of our most recent Annual Report on Form 10-K.

During the first quarter of 2026, the increase in our reported net sales was primarily driven by innovation and strong commercial execution across our businesses, particularly in our Electrophysiology and Interventional Cardiology and Vascular Therapies business units. Refer to Results of Operations for a discussion of our net sales by business. The increase in our reported net income attributable to Boston Scientific common stockholders was primarily driven by higher net sales and a discrete tax benefit. Refer to Tax Rate for additional details pertaining to the discrete tax benefit.

To supplement our unaudited consolidated financial statements prepared on a generally accepted accounting principles in the United States (GAAP) basis, we disclose certain non-GAAP measures, including operational and organic net sales growth, adjusted net income attributable to Boston Scientific common stockholders and adjusted net income per common share - diluted. Operational net sales growth excludes the impact of foreign currency fluctuations. Organic net sales growth excludes the impact of foreign currency fluctuations and net sales attributable to certain acquisitions and divestitures for which there are less than a full period of comparable net sales. There were no applicable acquisitions in the first quarter of 2026 or 2025. Our adjusted net income attributable to Boston Scientific common stockholders and adjusted net income per common share - diluted exclude certain charges and/or credits as reported in our net income attributable to Boston Scientific common stockholders and net income per common share - diluted for purposes of assessing operating performance.

Adjusted measures, including operational and organic net sales growth, adjusted net income attributable to Boston Scientific common stockholders and adjusted net income per common share - diluted, exclude certain items required by GAAP are not prepared in accordance with GAAP and should not be considered in isolation from, or as a replacement for, the most directly comparable GAAP measure. Refer to Additional Information for a discussion of management’s use of these non-GAAP financial measures.

Macroeconomic Environment

Our business is affected by global macroeconomic and geopolitical conditions. There continues to be significant uncertainty with respect to global trade policies, including changing tariff rates, tariff imposition delays, and the potential for reciprocal restrictive trade policies by the U.S. or other governments around the world, which could adversely impact our operations and results. We may also experience higher distribution costs and supply chain disruptions, including those arising from global conflicts and energy market volatility. While we seek to mitigate these impacts, their extent and duration remain uncertain and could negatively impact our business and results of operations. For additional information, refer to Item 1A. Risk Factors and Macroeconomic Environment contained in Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations of our most recent Annual Report on Form 10-K.

Results of Operations

Net Sales

The following section describes our net sales by reportable segment and business. In the fourth quarter of 2025, an organizational change combined our legacy Cardiology and Peripheral Interventions businesses into a single Cardiovascular business. We have revised prior periods to conform to the current year presentation. The change had no impact on our reportable segments. For additional information on our business units and product offerings, refer to Item 1. Business of our most recent Annual Report on Form 10-K.

(1) There were no applicable acquisitions in the first quarter of 2026 or 2025.

MedSurg

Endoscopy

Our Endoscopy business develops and manufactures devices to diagnose and treat a broad range of gastrointestinal (GI) conditions with innovative, less-invasive technologies. In the first quarter of 2026, reported net sales growth was primarily driven by our biliary franchise and our endoluminal surgery franchise.

Urology

Our Urology business develops and manufactures devices to treat various urological conditions for both male and female anatomies, including kidney stones, benign prostatic hyperplasia (BPH), prostate cancer, erectile dysfunction and incontinence. In the first quarter of 2026, reported net sales growth was primarily driven by flat operational performance, which was impacted by underperformance in our stone franchise as a result of volume-based-procurement in China, and commercial disruption in our sacral neuromodulation franchise, and the impact of foreign currency fluctuations.

Neuromodulation

Our Neuromodulation business develops and manufactures devices to treat various neurological movement disorders and manage chronic pain. In the first quarter of 2026, reported net sales growth was primarily driven by our comprehensive pain portfolio, led by our Intracept™ Intraosseous Nerve Ablation System and Nalu Peripheral Nerve Stimulation System, and our deep brain stimulation franchise.

Cardiovascular

Our Cardiovascular business develops and manufactures devices and medical technologies for diagnosing and treating a variety of diseases and abnormalities of the heart, as well as products to diagnose and treat peripheral arterial and venous diseases and various forms of cancer. In the first quarter of 2026, reported net sales growth was primarily driven by our Electrophysiology business unit, led by our Farapulse™ Pulsed Field Ablation (PFA) System, our WATCHMAN™ Left Atrial Appendage Closure Devices, and our coronary therapies franchise, led by our AGENT™ Drug-Coated Balloon. Net sales for the first quarter of 2026 were impacted by increased competition within our Electrophysiology business unit and a deceleration of certain WATCHMAN™ procedures.

Gross Profit

Our gross profit was $3.614 billion during the first quarter of 2026 and $3.210 billion during the first quarter of 2025. The following is a reconciliation of our gross profit margin and a description of the drivers of the change from period to period:

The primary factors that impacted gross profit margin for 2026 compared to 2025 were increased sales of higher margin products and a decrease in the impact of inventory step-up adjustments associated with acquisitions, offset by an unfavorable impact from foreign currency.

Operating Expenses

The following table provides a summary of our key operating expenses:

Selling, General and Administrative (SG&A) Expenses

During the first quarter of 2026, SG&A expenses increased $184 million, or 12 percent, compared to the prior year period and remained relatively flat as a percentage of net sales. The increase in SG&A expenses was primarily driven by selling expenses associated with higher net sales and product launches.

Research and Development (R&D) Expenses

We remain committed to advancing medical technologies and investing in meaningful R&D projects across our businesses. During the first quarter of 2026, R&D expenses increased $72 million, or 16 percent, compared to the prior year period and were 40 basis points higher as a percentage of net sales. The increase in R&D expenses was driven by investments across our businesses in order to maintain a pipeline of products that we believe will contribute to future sales growth.

Other Operating Expenses

The following provides a summary of certain of our other operating expenses, which are excluded by management for purposes of evaluating operating performance; refer to Additional Information for a further description.

Restructuring and Restructuring-related Net Charges (Credits)

In February 2023, we committed to a global restructuring program (the 2023 Restructuring Plan). On July 29, 2025, our Board of Directors approved expanding the 2023 Restructuring Plan by up to $250 million in aggregate additional pre-tax charges. The 2023 Restructuring Plan, including the expansion, is estimated to result in total pre-tax charges of approximately $700 million to $800 million. The activities associated with our 2023 Restructuring Plan, including the expansion, were substantially complete at the end of 2025. The following table provides a summary of cumulative pre-tax charges associated with the 2023 Restructuring Plan, including the expansion, by major type of cost:

(1) Plans detailing specific employee impacts are developed for each affected region and business, working with employee representative bodies where required under local laws.

(2) Consists primarily of consulting fees and costs associated with contractual cancellations.

(3) Represents costs to transfer product and manufacturing lines between geographically dispersed facilities.

(4) Comprised of other costs directly related to the restructuring program, including program management, impairment of right of use lease assets, accelerated depreciation and fixed asset write-offs.

The following table presents our restructuring and restructuring-related charges:

(1) These charges are recorded in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 420, Exit or Disposal Cost Obligations.

(2) These charges are primarily recorded within Cost of products sold, SG&A Expenses and R&D Expenses.

The following table presents our restructuring reserve balance:

Tax Rate

The following table provides a reconciliation of our reported tax rate to the rate from continuing operations:

(1) These receipts/charges are taxed at different rates than our rate from continuing operations.

Our reported tax rate is affected by recurring items such as the amount of our earnings subject to differing tax rates in foreign jurisdictions and the impact of certain receipts and charges that are taxed at rates that differ from our rate from continuing operations.

In the first quarter of 2026, the principal reason for the difference between our tax rate from continuing operations and our reported tax rate relates to a discrete tax benefit of $384 million to reflect a change in the anticipated future tax rate at which we expect to recover certain capitalized expenses.

In the first quarter of 2025, the principal reasons for the difference between our tax rate from continuing operations and our reported tax rate relate to certain acquisition-related net charges, and discrete tax benefits primarily related to stock-based compensation.

The Company continues to evaluate the impact of the One Big Beautiful Bill Act (OBBBA), enacted on July 4, 2025, as well as developments related to the Pillar Two framework issued by the Organization for Economic Cooperation and Development (OECD), including administrative guidance issued on January 5, 2026. There have been no significant changes to the Company’s assessment of these developments, and the impact of each on our tax rate from continuing operations was immaterial in the first quarter of 2026.

See Note G – Income Taxes to our unaudited consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q for additional details on our tax rate.

Critical Accounting Policies and Estimates

Our financial results are affected by the selection and application of accounting policies and methods. During the first quarter of 2026, there were no material changes to the application of critical accounting policies previously disclosed in our most recent Annual Report on Form 10-K.

Liquidity and Capital Resources

Based on our current business plan, we believe our existing balance of Cash and cash equivalents, future cash generated from operations, access to capital markets and existing credit facilities will be sufficient to fund our operations, invest in our infrastructure, pay our legal-related liabilities, pay taxes due, service and repay our existing debt and fund possible acquisitions for the next 12 months and for the foreseeable future. For additional information on our future payment obligations and commitments, refer to Contractual Obligations and Commitments below and contained in Item 7 of our most recent Annual Report on Form 10-K.

As of March 31, 2026, we had $1.453 billion of unrestricted Cash and cash equivalents on hand. The balance is comprised of $603 million invested in money market funds and time deposits and $850 million in interest bearing and non-interest-bearing bank accounts. We invest excess cash on hand in short-term financial instruments that earn market interest rates while mitigating principal risk through instrument and counterparty diversification, as well as what we believe to be prudent instrument selection. We limit our direct exposure to securities in any one industry or issuer.

On February 26, 2026, we entered into a new $3.000 billion revolving credit agreement (the 2026 Revolving Credit Agreement) with a global syndicate of commercial banks and terminated our previous revolving credit agreement (the 2021 Revolving Credit Agreement). The 2026 Revolving Credit Agreement matures on February 26, 2031, with one-year extension options subject to certain conditions, including certain lender approvals. This credit agreement provides backing for our commercial paper program, and outstanding commercial paper directly reduces borrowing capacity under the 2026 Revolving Credit Agreement. We had no amounts outstanding under the 2026 Revolving Credit Agreement as of March 31, 2026, resulting in an additional $3.000 billion of available liquidity.

On February 26, 2026, we entered into a $2.000 billion 364-day revolving credit agreement (the 364-Day Revolving Credit Agreement) with a global syndicate of commercial banks. The 364-Day Revolving Credit Agreement matures on the date that is 364 days from the earlier of (i) the date that any loans under the 364-Day Revolving Credit Agreement are available to be drawn on, or (ii) the closing of our proposed acquisition of Penumbra. In addition, on February 26, 2026, we entered into a $6.000 billion term loan credit agreement (the Term Loan Credit Agreement) with a global syndicate of commercial banks. The Term Loan Credit Agreement permits us to borrow (i) a 364-day delayed draw term loan in an aggregate principal amount of up to $1.000 billion (the Tranche A Loan), and (ii) a 364-day delayed draw term loan in an aggregate amount of up to $5.000 billion (the Tranche B Loan). Each of the Tranche A Loan and the Tranche B Loan may only be drawn upon the closing of our proposed acquisition of Penumbra and will mature 364 days thereafter. As of March 31, 2026, we had no amounts outstanding under the 364-Day Revolving Credit Agreement or Term Loan Credit Agreement.

For additional details related to our debt obligations, including our financial covenant requirement, refer to Note E – Contractual Obligations and Commitments to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q.

The following provides a summary and description of our net cash inflows (outflows):

Operating Activities

During the first quarter of 2026, cash provided by (used for) operating activities decreased $193 million compared to the prior year period primarily due to an increase in employee and working capital-related payments, partially offset by comparatively higher sales and corresponding operating income.

Investing Activities

During the first quarter of 2026, cash provided by (used for) investing activities included net cash payments of $523 million for the acquisition of Nalu Medical, Inc. and purchases of property, plant and equipment and internal use software of $177 million, partially offset by proceeds from the sale of equity method investments of $201 million. During the first quarter of 2025, cash provided by (used for) investing activities included net cash payments of $239 million for the acquisition of Cortex, Inc., and purchases of property, plant and equipment and internal use software of $187 million. For more information on our acquisitions, refer to Note B – Acquisitions and Strategic Investments to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Financing Activities

During the first quarter of 2026, cash provided by (used for) financing activities included a $255 million payment of the remaining balance of 3.750% Senior Notes due March 2026.

Cash provided by (used for) financing activities in the first quarter of 2025 included the registered public offering of €1.500 billion in aggregate principal amount of euro-denominated senior notes (the 2025 Eurobonds), partially offset by net payments of commercial paper of $192 million. The 2025 Eurobonds offering resulted in cash proceeds of $1.558 billion, net of investor discounts and issuance costs. We used the net proceeds from the 2025 Eurobonds offering to fund the repayment at maturity of AMS Europe’s €1.000 billion 0.750% Senior Notes due March 2025 and to pay accrued and unpaid interest with respect to such notes. Additionally, we used the remaining net proceeds for general corporate purposes, including, among other things, short term investments, reduction of short term debt, funding of working capital and acquisitions. For more information, refer to Note E – Contractual Obligations and Commitments to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Financial Covenant

As of March 31, 2026, we were in compliance with the financial covenant required by our credit agreements described above.

(1) Ratio of total debt to deemed consolidated Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA), as defined by each of the 2026 Revolving Credit Agreement, the 364-Day Revolving Credit Agreement and the Term Loan Credit Agreement.

Under each of the 2026 Revolving Credit Agreement, 364-Day Revolving Credit Agreement and Term Loan Credit Agreement, we are required to maintain a maximum permitted leverage ratio, as defined in the agreements, of 3.75 times. The credit agreements provide for higher leverage ratios, at our election, for the period following a qualified acquisition, as defined in the agreements, for which consideration exceeds $1.000 billion. In the event of such an acquisition, for the four succeeding quarters immediately following, including the quarter in which the acquisition occurs, the maximum permitted leverage ratio is 4.75 times. It steps down for the fifth, sixth and seventh succeeding quarters to 4.50 times, 4.25 times and 4.00 times, respectively. Thereafter, a maximum leverage ratio of 3.75 times is required through the remaining term of the applicable credit agreement. The financial covenant is substantially similar to the covenant that was required under the 2021 Revolving Credit Agreement, which we terminated on February 26, 2026. On November 15, 2024, we announced the closing of our acquisition of Axonics, Inc. which we had previously designated as a qualified acquisition under the 2021 Revolving Credit Agreement, increasing the maximum permitted leverage ratio to 4.75 times at that time. We continued such designation under the new credit agreements. Consequently, as of March 31, 2026, the maximum permitted leverage ratio is 4.25 times. We believe that we have the ability to comply with the financial covenant for the next 12 months.

The financial covenant requirement provides for an exclusion from the calculation of consolidated EBITDA, through maturity, of certain charges and expenses. Permitted exclusions from the calculation of consolidated EBITDA include any non-cash charges and any cash litigation payments (net of any cash litigation receipts), as defined in the credit agreements, provided that the sum of any excluded net cash litigation payments since December 31, 2025 does not exceed $1.160 billion. As of March 31, 2026, we had $1.143 billion of the total permitted exclusion remaining.

Contractual Obligations and Commitments

On January 15, 2026, we announced our entry into a definitive agreement to acquire 100 percent of Penumbra, Inc. (Penumbra), a publicly traded medical technology company primarily focused on thrombectomy products for use in peripheral vascular procedures in the removal of blood clots and blockages. At the time of announcement, the purchase price was valued at $374 per share, or approximately $14.500 billion. On March 16, 2026, we and Penumbra each received a request for additional information (Second Request) from the United States Federal Trade Commission (FTC) in connection with its review of the transaction. We and Penumbra are responding to the Second Request and continue to work cooperatively with the FTC in its review. The transaction is expected to be completed in the second half of 2026, subject to receipt of Penumbra's stockholder approval and the satisfaction of other customary closing conditions, including regulatory clearances. We plan to fund the transaction consideration through a combination of cash on hand and newly issued debt in an aggregate amount equal to approximately $11.000 billion, and the remaining portion of the transaction consideration will be paid in shares of our common stock. The Penumbra business will be integrated into our Cardiovascular division.

Certain of our acquisitions involve the payment of contingent consideration. Refer to Note B – Acquisitions and Strategic Investments to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q for further details regarding the estimated potential amount of future contingent consideration we could be required to pay associated with our acquisitions. There have been no other material changes to our contractual obligations and commitments as of March 31, 2026.

Equity

We did not repurchase any shares of our common stock during the first quarter of 2026 or 2025. On February 18, 2026, our Board of Directors approved an increase to the existing authorization to repurchase up to $1.000 billion of our common stock by an additional $4.000 billion. As a result, our stock repurchase program is now authorized to repurchase up to $5.000 billion of our common stock. As of March 31, 2026, we had the full amount remaining available under the authorization. Shares of our common stock may be repurchased under the stock repurchase program from time to time through open market purchases, block trades, private transactions or accelerated or other structured share repurchase programs. The extent to which we repurchase shares of our common stock, and the timing of such purchases, will depend upon a variety of factors, including market conditions, regulatory requirements and other considerations, as determined by the Company. The stock repurchase program may be suspended or discontinued at any time.

Legal Matters

For a discussion of our material legal proceedings refer to Note H – Commitments and Contingencies to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q and Note I – Commitments and Contingencies to our audited financial statements contained in Item 8 of our most recent Annual Report on Form 10-K.

Recent Accounting Pronouncements

Information regarding new accounting pronouncements implemented since December 31, 2025, and relevant accounting pronouncements to be implemented in the future are included in Note M – New Accounting Pronouncements to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Additional Information

Use of Non-GAAP Financial Measures

To supplement our unaudited consolidated financial statements presented on a GAAP basis, we disclose certain non-GAAP financial measures, including adjusted net income (loss), adjusted net income (loss) attributable to Boston Scientific common stockholders and adjusted net income (loss) per share (EPS) that exclude certain charges (credits); operational net sales, which exclude the impact of foreign currency fluctuations; and organic net sales, which exclude the impact of foreign currency fluctuations as well as the impact of certain acquisitions and divestitures with less than a full period of comparable net sales. These non-GAAP financial measures are not in accordance with U.S. GAAP and should not be considered in isolation from or as a replacement for the most directly comparable GAAP financial measures. Further, other companies may calculate these non-GAAP financial measures differently than we do, which may limit the usefulness of those measures for comparative purposes.

To calculate adjusted net income (loss), adjusted net income (loss) attributable to Boston Scientific common stockholders and adjusted net income (loss) per share, we exclude certain charges (credits) from GAAP net income and GAAP net income attributable to Boston Scientific common stockholders, which include amortization expense, goodwill and other intangible asset impairment charges, acquisition/divestiture-related net charges (credits), investment portfolio net losses (gains) and impairments, restructuring and restructuring-related net charges (credits), litigation-related net charges (credits), European Union (EU) Medical Device Regulation (MDR) implementation costs, debt extinguishment net charges, deferred tax expenses (benefits) and discrete tax items. Amounts are presented after-tax using our effective tax rate, unless the amount is a significant unusual or infrequently occurring item in accordance with FASB ASC Topic 740-270-30, "General Methodology and Use of Estimated Annual Effective Tax Rate." In addition to the explanation below, please refer to Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations in our most recent Annual Report on Form 10-K filed with the Securities and Exchange Commission for an explanation of each of these adjustments and the reasons for excluding each item. The following is an explanation of each incremental or revised adjustment type, since our most recent Annual Report on Form 10-K, that management excluded as part of these non-GAAP financial measures as well as the reason for excluding each item:

• Restructuring and restructuring-related net charges (credits) - These adjustments primarily represent severance and other compensation-related charges, fixed asset write-offs, contract cancellations, project management fees, facility shut down costs, costs to transfer manufacturing lines between geographically dispersed facilities and other direct costs associated with our restructuring plans. These restructuring plans each consist of distinct initiatives that are fundamentally different from our ongoing, core cost reduction initiatives in terms of, among other things, the frequency with which each action is performed and the required planning, resourcing, cost and timing. Examples of such initiatives include the movement of business activities, facility consolidations and closures and the transfer of product lines between manufacturing facilities, which, due to the highly regulated nature of our industry, requires a significant investment in time and cost to create duplicate manufacturing lines, run product validations and seek regulatory approvals. Restructuring plans take place over a defined timeframe and have a distinct project timeline that requires, and begins subsequent to, approval by our Board of Directors. In contrast to our ongoing cost reduction initiatives, restructuring plans typically result in duplicative cost and exit costs over the defined timeframe and are not considered part of our core, ongoing operations. In addition, we may incur certain charges such as severance and other compensation-related charges, fixed asset write-offs, contract cancellations, facility shutdown costs, and inventory write-downs associated with discontinuations of significant product lines. These restructuring plans and activities are incremental to the core activities that arise in the ordinary course of our business. Restructuring and restructuring-related net charges (credits) are excluded from management's assessment of operating performance and from our operating segments' measures of profit and loss used for making operating decisions and assessing performance.

• Deferred tax expenses (benefits) - These amounts represent significant non-cash tax benefits arising from internal reorganizations or intra-entity asset transfers. The deferred tax effects related to the establishment and subsequent reversal of net deferred tax assets are excluded from management's assessment of operating performance used for making operating decisions and assessing performance.

The GAAP financial measures most directly comparable to adjusted net income (loss), adjusted net income (loss) attributable to Boston Scientific common stockholders and adjusted net income (loss) per share are GAAP net income (loss), GAAP net income (loss) attributable to Boston Scientific common stockholders and GAAP net income (loss) per common share - diluted, respectively.

To calculate operational net sales growth rates, which exclude the impact of foreign currency fluctuations, we convert actual net sales from local currency to U.S. dollars using constant foreign currency exchange rates in the current and prior periods. To calculate organic net sales growth rates, we also remove the impact of certain acquisitions and divestitures with less than a full period of comparable net sales. The GAAP financial measure most directly comparable to operational net sales and organic net sales is net sales reported on a GAAP basis.

Reconciliations of each of these non-GAAP financial measures to the corresponding GAAP financial measure are included below and under Executive Summary and Results of Operations above.

Management uses these supplemental non-GAAP financial measures to evaluate performance period over period, to analyze the underlying trends in our business, to assess our performance relative to our competitors and to establish operational goals and forecasts that are used in allocating resources. In addition, management uses these non-GAAP financial measures to further its understanding of the performance of our operating segments. The adjustments excluded from our non-GAAP financial measures are consistent with those excluded from our operating segments’ measures of net sales and profit or loss. These adjustments are excluded from the segment measures reported to our chief operating decision maker that are used to make operating decisions and assess performance.

We believe that presenting adjusted net income (loss), adjusted net income (loss) attributable to Boston Scientific common stockholders, adjusted net income (loss) per share, operational and organic net sales growth rates, in addition to the corresponding GAAP financial measures, provides investors greater transparency to the information used by management for its operational decision-making and allows investors to see our results “through the eyes” of management. We further believe that providing this information assists our investors in understanding our operating performance and the methodology used by management to evaluate and measure such performance.

The following is a reconciliation of our results of operations prepared in accordance with GAAP to those adjusted results considered by management. Refer to Executive Summary and Results of Operations for a discussion of these reconciling items:

We develop, manufacture and sell medical devices globally and our earnings and cash flows are exposed to market risk from changes in currency exchange rates and interest rates. We address these risks through a risk management program that includes the use of derivative financial instruments. We operate the program pursuant to documented corporate risk management policies. We do not enter derivative transactions for speculative purposes. Gains and losses on derivative financial instruments substantially offset losses and gains on underlying hedged exposures. Furthermore, we manage our exposure to counterparty risk on derivative instruments by entering into contracts with a diversified group of major financial institutions and by actively monitoring outstanding positions.

Our currency risk consists primarily of foreign currency denominated firm commitments, forecasted foreign currency denominated intercompany and third-party transactions and net investments in certain subsidiaries. We use both nonderivative (primarily European manufacturing operations) and derivative instruments to manage our earnings and cash flow exposure to changes in currency exchange rates. We had currency derivative instruments outstanding in the contract amount of $13.633 billion as of March 31, 2026 and $12.726 billion as of December 31, 2025. A ten percent appreciation in the U.S. dollar’s value relative to the hedged currencies would increase the derivative instruments’ fair value by $784 million as of March 31, 2026 compared to $804 million as of December 31, 2025. A ten percent depreciation in the U.S. dollar’s value relative to the hedged currencies would decrease the derivative instruments’ fair value by $958 million as of March 31, 2026 compared to $982 million as of December 31, 2025. Any increase or decrease in the fair value of our currency exchange rate sensitive derivative instruments would be substantially offset by a corresponding decrease or increase in the fair value of the hedged underlying asset, liability or forecasted transaction, resulting in minimal impacts on our unaudited consolidated statements of operations.

Our interest rate risk relates primarily to U.S. dollar and euro-denominated borrowings partially offset by U.S. dollar cash investments. We have historically used interest rate derivative instruments to manage our earnings and cash flow exposure to changes in interest rates. We had no interest rate derivative instruments outstanding as of March 31, 2026 or December 31, 2025. As of March 31, 2026, $10.935 billion in aggregate principal amount of our outstanding debt obligations was at fixed interest rates, representing approximately 100% of our total debt, on an amortized cost basis. As of March 31, 2026, our outstanding debt obligations at fixed interest rates were comprised of senior notes.

Refer to Note D – Hedging Activities and Fair Value Measurements to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q for further information regarding our derivative financial instruments.

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our President and Chief Executive Officer (CEO) and our Executive Vice President and Chief Financial Officer (CFO), evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2026 pursuant to Rule 13a-15(b) of the Securities Exchange Act of 1934, as amended. Disclosure controls and procedures are designed to ensure that material information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and ensure that such material information is accumulated and communicated to our management, including our CEO and CFO, as appropriate, to allow timely decisions regarding required disclosure. Based on their evaluation, our CEO and CFO concluded that, as of March 31, 2026, our disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting

Previously, we began a multi-year implementation of a new global enterprise resource planning (ERP) system, which will replace our existing system. The implementation is expected to occur in phases over the next several years. The portion of the transition to the new ERP system which we have completed to date resulted in changes in our business processes and internal control over financial reporting. No changes occurred during the three months ended March 31, 2026. As future phases are implemented, we expect the changes to have a material impact on our internal controls over financial reporting and we will evaluate whether these process changes necessitate further changes in the design of and testing for effectiveness of internal controls over financial reporting.

PART II

OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Refer to Note H – Commitments and Contingencies to our unaudited consolidated financial statements contained in Part I, Item 1 of this Quarterly Report on Form 10-Q, which is incorporated herein by reference.

In addition to other information contained elsewhere in this report, you should carefully consider the factors discussed in Item 1A. Risk Factors in our most recent Annual Report on Form 10-K, which could materially affect our business, financial condition or future results.

(c)

On February 19, 2026, Michael F. Mahoney, our Chairman and Chief Executive Officer, terminated a trading plan that was originally entered into on August 29, 2025 and intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The plan covered the sale of up to 478,914 shares of our common stock, including 287,264 shares to be acquired upon exercise of stock options. Transactions under the plan were based upon pre-established dates and stock price thresholds.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on May 1, 2026.