OSI SYSTEMS INC

(Unaudited)

1. Basis of Presentation

The unaudited condensed consolidated financial statements include the accounts of OSI Systems, Inc. and our subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The condensed consolidated financial statements have been prepared by management in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and in conjunction with the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures required for annual financial statements have been condensed or excluded in accordance with SEC rules and regulations and GAAP applicable to interim unaudited financial statements. Accordingly, the condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for audited annual financial statements. In the opinion of management, the condensed consolidated financial statements reflect all adjustments of a normal and recurring nature that are considered necessary for a fair presentation of the results for the interim periods presented. These unaudited condensed consolidated financial statements and the accompanying notes should be read in conjunction with the audited consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K for the fiscal year ended June 30, 2026 filed with the SEC. The results of operations for the three months ended September 30, 2026 are not necessarily indicative of the operating results to be expected for the full 2027 fiscal year or any future periods. Short-term investments of $0.2 million have been reclassified from prepaid expenses and other current assets on the condensed consolidated balance sheet as of June 30, 2026 for consistency with the current period presentation. This reclassification on the condensed consolidated balance sheet had no other effect on the previously reported condensed consolidated financial statements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management 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 financial statements and the reported amounts of sales, costs of sales and expenses during the reporting period. The most significant of these estimates and assumptions for our company relate to contract revenue, fair values of assets acquired and liabilities assumed in business combinations, values for inventories reported at lower of cost or net realizable value, stock-based compensation expense, income taxes, accrued warranty costs, contingent consideration, allowance for doubtful accounts, and the recoverability, useful lives and valuation of recorded amounts of long-lived assets, identifiable intangible assets and goodwill. Changes in estimates are reflected in the periods during which they become known. Due to the inherent uncertainty involved in making estimates, our actual amounts reported in future periods could differ materially from these estimates.

Earnings Per Share Computations

We compute basic earnings per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. We compute diluted earnings per share by dividing net income available to common stockholders by the sum of the weighted average number of common shares and dilutive potential common shares outstanding during the period. Potential common shares consist of the shares issuable upon the exercise of stock options and restricted stock unit awards under the treasury stock method. The underlying equity component of the 2.25% convertible senior notes due 2029 (the “2029 Notes”) and the 0.50% convertible senior notes due 2031 (the “2031 Notes”) discussed in Note 8 to the condensed consolidated financial statements will have a net impact on diluted earnings per share when the average price of our common stock exceeds the conversion price of $191.98 for the 2029 Notes and $353.82 for the 2031 Notes because the principal amounts of the respective convertible senior notes will be settled in cash upon conversion. There was a dilutive effect of the 2029 Notes as set forth in the table below for the three months ended September 30, 2026. There was no dilutive impact of the 2031 Notes.

The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share amounts):

Cash and Cash Equivalents

We consider all highly liquid investments with maturities of three months or less as of the acquisition date to be cash equivalents.

Our cash and cash equivalents totaled $236.3 million at September 30, 2026. Of this amount, approximately 35% was held by our foreign subsidiaries and subject to repatriation tax considerations. These foreign funds were held primarily by our subsidiaries in India, the United Kingdom, Singapore, and Canada. We have cash holdings in financial institutions that exceed insured limits for such financial institutions; however, we mitigate this risk by utilizing international financial institutions of high credit quality.

Short-Term Investments

Our short-term investments consist primarily of U.S. Treasury securities classified as available-for-sale debt securities. These securities are carried at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income (loss), net of tax.

The amortized cost, gross unrealized gains and losses, and fair value of our available-for-sale debt securities were as follows as of September 30, 2026 (in thousands):

All of our available-for-sale debt securities outstanding at September 30, 2026 were contractually scheduled to mature within one year.

Fair Value of Financial Instruments

Our financial instruments consist primarily of cash and cash equivalents, short-term investments, insurance company contracts, accounts receivable, accounts payable, debt instruments, an interest rate swap contract and foreign currency forward contracts. The carrying values of financial instruments, other than long-term debt instruments and our interest rate swap contract, are representative of their fair values due to their short-term maturities. The carrying values of our term loan and lease obligations are considered to approximate their fair values because the interest rates of these instruments are variable or comparable to current rates for financing available to us. The fair values of our foreign currency forward contracts were not significant as of June 30, 2026 or as of September 30, 2026.

Fair value is the price that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The “Level 1” category comprises assets and liabilities measured at quoted prices in active markets for identical assets and liabilities. The “Level 2” category comprises assets and liabilities measured from observable inputs other than quoted market prices. The “Level 3” category comprises assets and liabilities for which valuation inputs are unobservable and significant to the fair value measurement. Our contingent payment obligations related to acquisitions, which are further discussed in Note 10 to the condensed consolidated financial statements, are in the “Level 3” category for valuation purposes.

The fair values of our financial assets and liabilities are categorized as follows (in thousands):

Derivative Instruments and Hedging Activity

Our use of derivatives consists of foreign currency forward contracts, a cross-currency interest rate swap contract and an interest rate swap agreement. Our foreign currency forward contracts are utilized to partially mitigate certain balance sheet exposures or used as a net investment hedge to protect against potential changes resulting from short-term foreign currency fluctuations. These contracts have original maturities of up to three months. We use a cross-currency interest rate swap contract to hedge our net investment in a foreign subsidiary. We also manage our risk to changes in interest rates using derivative instruments. We use fixed interest rate swaps to effectively convert a portion of the variable interest rate payments to fixed interest rate payments. We do not use hedging instruments for speculative purposes.

The net gains or losses from our foreign currency forward contracts, which are not designated as hedge instruments, are reported in the consolidated statements of operations, and the amounts reported for the three months ended September 30, 2025 and 2026 were not significant. The fair value of our foreign currency forward contracts is estimated using a standard valuation model and market-based observable inputs over the contractual term. Unrealized gains are recognized as assets and unrealized losses are recognized as liabilities. As of June 30, 2026 and September 30, 2026, we held foreign currency forward contracts with notional amounts totaling $138.0 million and $94.1 million, respectively. Unrealized gains and losses from our foreign currency forward contracts as of June 30, 2026 and September 30, 2026 were not significant.

In July 2026, we settled our previously outstanding cross-currency interest rate swap and concurrently entered into a replacement contract extending the maturity from June 2027 to December 2027. The net settlement amount was not significant. The net gains or losses from our cross-currency interest rate swap contract, which is designated as a net investment hedge instrument in a foreign subsidiary, are reported in accumulated other comprehensive loss in the consolidated statements of stockholders’ equity, and the amount reported for the three months ended September 30, 2026 was not significant. The fair value of our cross-currency interest rate swap contract is estimated using a standard valuation model and market-based observable inputs over the contractual term. Unrealized gains are recognized as assets and unrealized losses are recognized as liabilities. As of June 30, 2026 and September 30, 2026, the notional amount of this contract was $35.0 million. The unrealized gains from our cross-currency interest rate swap contract as of June 30, 2026 and September 30, 2026 were not significant. The net interest rate benefit from this contract recognized in interest and other expense, net was not significant for the three months ended September 30, 2026.

The interest rate swap agreement was entered into to improve the predictability of cash flows from interest payments related to our variable, Secured Overnight Financing Rate (“SOFR”) based debt. The interest rate swap matures in December 2026. The interest rate swap is considered an effective cash flow hedge, and as a result, the net gains or losses on such instrument are reported as a component of other comprehensive income (loss) in our consolidated financial statements and are reclassified as net income when the underlying hedged interest impacts earnings. A qualitative and quantitative assessment of the interest rate swap hedge effectiveness is performed on a quarterly basis, unless facts and circumstances indicate that the hedge may no longer be highly effective. As of June 30, 2026 and September 30, 2026, the notional amount of the interest rate swap hedge derivative instrument was $175 million. The fair value of the interest rate swap contract as of June 30, 2026 and September 30, 2026 is recorded in Other assets within the consolidated balance sheet.

The effect of the cash flow hedges on other comprehensive income (loss) and earnings for the periods presented was as follows:

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) and other regulatory bodies that are adopted as of the specified effective dates. Unless otherwise discussed, management believes that the impact of recently issued standards, which are not yet effective, will not have a material impact on our Consolidated Financial Statements upon adoption.

Accounting Guidance Adopted

In December 2024, the FASB issued Accounting Standards Update 2024-04, “Debt - Debt with Conversion and Other Options (Subtopic 470-20): Induced Conversions of Convertible Debt Instruments” (“ASU 2024-04”), which clarifies the accounting for induced conversions of convertible debt instruments by requiring entities to apply the inducement guidance regardless of whether the convertible debt instrument includes a cash conversion feature or is otherwise within the scope of Subtopic 470-20. We adopted ASU 2024-04 on July 1, 2026 on a prospective basis; there were no settlements or inducement offers related to our 2029 Notes or 2031 Notes during the three months ended September 30, 2026, therefore the adoption had no impact on our condensed consolidated financial statements.

In July 2025, the FASB issued Accounting Standards Update 2025-05, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets” (“ASU 2025-05”) which provides a practical expedient that permits an entity, when developing reasonable and supportable forecasts for current accounts receivable and current contract assets arising from transactions accounted for under ASC 606, to assume that conditions existing as of the balance sheet date will remain unchanged for the remaining life of those assets. We adopted ASU 2025-05 on July 1, 2026 on a prospective basis, and elected to apply the practical expedient which did not have a material impact on our condensed consolidated financial statements.

Accounting Guidance Not Yet Adopted

In November 2024, the FASB issued Accounting Standards Update 2024-03, “Income Statement-Reporting Comprehensive Income (Topic 220): Expense Disaggregation Disclosures”, (“ASU 2024-03”) which requires additional disclosures about income statement expenses. The guidance requires disaggregation of certain costs and expenses included in each relevant expense caption on our consolidated income statements in a separate note to the financial statements at each interim and annual reporting period, including amounts of purchases of inventory, employee compensation, depreciation, and intangible asset amortization. ASU 2024-03 is effective for annual periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted and may be applied either on a prospective or retrospective basis. We are evaluating the potential impact of ASU 2024-03 on disclosures in our Consolidated Financial Statements which will be effective beginning with our Form 10-K for fiscal year 2028.

In September 2025, the FASB issued Accounting Standards Update 2025-06 “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software” (“ASU 2025-06”) which modernizes the accounting for internal-use software to current development practices, clarifies when to begin capitalizing costs and enhances disclosure requirements. This standard is effective for annual reporting periods beginning after December 15, 2027, including interim periods within those annual periods. Early adoption is permitted. The amendments are to be applied retrospectively, prospectively, or a modified transition approach may be used based on the status of the project and whether software costs were capitalized before the date of adoption. We are evaluating the potential impact of ASU 2025-06 on our Consolidated Financial Statements and related disclosures which will be effective beginning with our Form 10-Q for the first quarter of fiscal year 2029 and our Form 10-K for fiscal year 2029.

In December 2025, the FASB issued Accounting Standards Update 2025-11, “Interim Reporting (Topic 270): Narrow-Scope Improvements” (“ASU 2025-11”), which clarifies the application, form and content, and required disclosures for interim financial statements prepared in accordance with GAAP. ASU 2025-11 is effective for interim periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. We are evaluating the potential impact of ASU 2025-11 on disclosures in our Consolidated Financial Statements which will be effective for interim periods beginning in fiscal year 2029.

In December 2025, the FASB issued Accounting Standards Update 2025-12, “Codification Improvements” (“ASU 2025-12”). ASU 2025-12 includes changes that clarify, correct, or otherwise improve certain components of the Accounting Standards Codification. The improvements consist of narrow-scope amendments, technical corrections, clarification of existing guidance, and updates to clarify the appropriate scope and application of certain disclosure requirements. ASU 2025-12 is effective for annual periods beginning after December 15, 2026, and interim reporting periods within those annual reporting periods, with early adoption permitted. We are evaluating the potential impact of ASU 2025-12 on disclosures in our Consolidated Financial Statements which will be effective for interim periods beginning in fiscal year 2028.

2. Business Combinations

Under Accounting Standards Codification Topic 805,Business Combinations (“ASC 805”), the acquisition method of accounting requires us to record assets acquired and liabilities assumed from an acquisition at their estimated fair values at the date of acquisition. Any excess of the total estimated purchase price over the estimated fair value of the net assets acquired should be recorded as goodwill. Such valuations require management to make significant estimates and assumptions, especially with respect to intangible assets. Significant estimates in valuing certain intangible assets include, but are not limited to, future expected cash flows from acquired customers, acquired technology, trade names, useful lives and discount rates. Management’s estimates of fair value are based on assumptions which are believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period for fair value, which is up to one year from the acquisition date, as additional information that existed at the acquisition date becomes available, we may record adjustments to the preliminary assets acquired and liabilities assumed. Upon the conclusion of the measurement period, any subsequent adjustments are included in earnings. There wereno new business combinations during the first quarter of fiscal year 2027. However, we recorded measurement period adjustments related to a prior acquisition from fiscal year 2026 during the quarter which were not significant.

3. Balance Sheet Details

The following tables set forth details of selected balance sheet accounts (in thousands):

Depreciation and amortization expense for property and equipment was $5.4 million and $5.5 million, respectively, for the three months ended September 30, 2025 and 2026.

4. Goodwill and Intangible Assets

The changes in the carrying value of goodwill by segment for the three-month period ended September 30, 2026 were as follows (in thousands):

Intangible assets consisted of the following (in thousands):

Amortization expense related to intangible assets was $4.9 million and $3.6 million for the three months ended September 30, 2025 and 2026, respectively.

At September 30, 2026, the estimated future amortization expense for amortizable intangible assets was as follows (in thousands):

Fiscal Year

Software development costs for software products incurred before establishing technological feasibility are charged to operations. Software development costs incurred after establishing technological feasibility are capitalized on a product-by-product basis until the product is available for general release to customers at which time amortization begins. Annual amortization, charged to cost of goods sold, is the amount computed using the ratio that current revenues for a product bear to the total current and anticipated future revenues for that product. In the event that future revenues are not estimable, such costs are amortized on a straight-line basis over the remaining estimated economic life of the product. Amortizable assets that have not yet begun to be amortized are included in “Thereafter” in the table above. For each of the three months ended September 30, 2025 and 2026, we capitalized software development costs of $4.2 million and $5.6 million, respectively.

5. Contract Assets and Liabilities

We enter into contracts to sell products and provide services, and we recognize contract assets and liabilities that arise from these transactions. We recognize revenue and corresponding accounts receivable according to ASC Topic 606,Revenue from Contracts with Customers (“ASC 606”). When we recognize revenue in advance of the point in time at which contracts give us the right to invoice a customer, we record this as unbilled revenue, which is included in accounts receivable, net, on the consolidated balance sheets. We may also receive consideration, per the terms of a contract, from customers prior to transferring control of goods to the customer. We record customer deposits as contract liabilities. Additionally, we may receive payments, most typically under service and warranty contracts, at the onset of the contract and before services have been performed. In such instances, we record a deferred revenue liability in either Current liabilities or Other long-term liabilities. We recognize these contract liabilities as sales after all revenue recognition criteria are met.

The table below shows the balance of contract assets and liabilities as of June 30, 2026 and September 30, 2026, including the change between such dates. There were no substantial non-current contract assets for the periods presented.

Contract Assets (in thousands)

Contract Liabilities (in thousands)

Contract Assets. Unbilled revenue increased by $34.1 million primarily reflecting continued execution on certain Security Division contracts where we met the revenue recognition criteria under ASC 606 in advance of contractual billing milestones, partially offset by reductions for billings due to the timing and nature of achievement of milestones during the quarter giving us the right to invoice customers.

Contract Liabilities. Advances from customers increased by $21.7 million primarily due to the receipt of customer deposits on certain contracts in our Security division in advance of performance, partially offset by the application of certain amounts to customer invoices during the period. Total deferred revenue decreased by $1.7 million primarily due to recognition of service revenue for performance of obligations during the period, partially offset by service contracts which allow us to collect payment prior to performance of these obligations.

Remaining Performance Obligations. Remaining performance obligations related to ASC 606 represent the portion of the transaction price allocated to performance obligations under contracts which are fully or partially unsatisfied at the end of the period. As of September 30, 2026, the aggregate portion of the transaction price allocated to remaining performance obligations was approximately $2.0 billion. As of September 30, 2026, we expect to recognize revenue on approximately 64% of the remaining performance obligations over the next 12 months, and the remainder is expected to be recognized thereafter. During the three months ended September 30, 2026, we recognized revenue of $37.8 million from contract liabilities existing at the beginning of the period.

*Practical Expedients.*In cases where we are responsible for shipping after the customer has obtained control of the goods, we have elected to treat the shipping activities as fulfillment activities rather than as a separate performance obligation. Additionally, we have elected to capitalize the cost to obtain a contract only if the period ofamortization would be longer than one year. We only give consideration to whether a customer agreement has afinancing component if the period of time between transfer of goods and services and customer payment is greater than one year.

6. Leases

The components of operating lease expense were as follows (in thousands):

Supplemental disclosures related to operating leases were as follows (in thousands):

Supplemental cash flow information related to operating leases was as follows (in thousands):

Maturities of operating lease liabilities at September 30, 2026 were as follows (in thousands):

7. Restructuring and Other charges

We endeavor to align our global capacity and infrastructure with demand by our customers as well as fully integrate acquisitions and thereby improve operational efficiency.

During the three months ended September 30, 2026, we recognized $2.1 million in restructuring and other charges, which included $0.2 million for acquisition-related costs, $0.5 million for employee terminations, $0.1 million for facility closures, $0.3 million in legal charges, and $1.0 million for non-recurring charges in the Security and Healthcare divisions.

During the three months ended September 30, 2025, we recognized $2.7 million in restructuring and other charges, which included $2.4 million primarily for non-recurring charges in the Security and Healthcare divisions and $0.3 million for employee terminations.

The following tables summarize restructuring and other charges for the periods set forth below (in thousands):

The accrued liability for restructuring and other charges is included in other accrued expenses and current liabilities in the condensed consolidated balance sheets. The changes in the accrued liability for restructuring and other charges for the three-month period ended September 30, 2026 were as follows (in thousands):

8. Borrowings

Long-term debt consisted of the following (in thousands):

Future principal payments of long-term debt by fiscal year as of September 30, 2026 are as follows (in thousands):

Revolving Credit Facility

Our senior secured credit facility comprises a term loan and a $725.0 million revolving credit facility which mature in July 2030. The revolving credit facility includes a $350.0 million sub-limit for letters of credit, which includes up to $300.0 million for borrowings in certain foreign currencies. Under certain circumstances and subject to certain conditions, we have the ability to increase the revolving credit facility by an amount equal to the greater of $300 million or such amount as would not cause our secured leverage ratio to exceed a specified level. Our facility permits the securitization of certain qualifying assets of up to $100 million.

Borrowings under the amended facility bore interest at SOFR plus a margin of 1.25% as of September 30, 2026 (which margin can range from 1.0% to 1.75% based on our consolidated net leverage ratio as defined in the credit facility). Letters of credit reduce the amount available to borrow under the credit facility by their face value amount. The unused portion of the facility bore a commitment fee of 0.15% as of September 30, 2026 (which fee can range from 0.10% to 0.25% based on our consolidated net leverage ratio as defined in the credit facility). Our borrowings under the credit agreement are guaranteed by certain of our U.S.-based subsidiaries and are secured by substantially all of our assets and substantially all the assets of certain of our subsidiaries. The credit facility contains various representations and warranties, affirmative, negative and financial covenants and events of default. As of September 30, 2026, there wereno borrowings outstanding under the revolving credit facility, $87.6 million outstanding under the letters of credit sub-facility, and $90.0 million outstanding under the term loan. As of September 30, 2026, the amount available to borrow under the credit facility was $637.4 million. Loan amounts under the revolving credit facility may be borrowed, repaid and re-borrowed during the term. The principal amount of each loan is due and payable in full on the maturity date. We have the right to repay each loan in whole or in part from time to time without penalty. It is our practice to routinely borrow and repay several times per year under the revolving facility and therefore, borrowings under the revolving credit facility are included in current liabilities. As of September 30, 2026, we were in compliance with all financial covenants under this credit facility. In September 2022, we entered into an interest rate swap agreement in order to mitigate the interest rate risk on a portion of the interest payments expected to be made on the borrowings outstanding under the revolving credit facility and term loan. Refer to Note 1 for further information relating to the interest rate swap agreement.

2.25%Convertible Senior Notes Due 2029 (“2029 Notes”)

In July 2024, we issued an aggregate of $350.0 million principal amount of 2.25% convertible senior notes due in August 2029 in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended, at an issuance price equal to 97.5% of the principal amount. The 2029 Notes were issued pursuant to and are governed by an indenture dated July 19, 2024. The proceeds from the issuance of the 2029 Notes were $340.4 million, net of the issuance discount and debt issuance costs.

The 2029 Notes are unsecured obligations which bear regular interest at 2.25% per annum payable semiannually in arrears on February 1 and August 1 of each year, beginning on February 1, 2025. The 2029 Notes will mature on August 1, 2029, unless repurchased, redeemed, or converted in accordance with their terms prior to such date. The 2029 Notes are convertible into a combination of cash and shares of our common stock, at an initial conversion rate of 5.2090 shares of common stock per $1,000 principal amount of 2029 Notes, which is equivalent to an initial conversion price of approximately $191.98 per share of our common stock. The default settlement method is a combination settlement with a specified dollar amount of $1,000 per $1,000 principal amount of notes. The conversion rate is subject to customary adjustments for certain dilutive events. We may redeem for cash all or any portion of the 2029 Notes, at our option, on or after August 6, 2027 if the last reported sale price of our common stock has been at least 130% of the conversion price then in effect for at least 20 trading days at a redemption price equal to 100% of the principal amount of the 2029 Notes to be redeemed, plus accrued and unpaid interest up to the day before the redemption date. The holders may require us to repurchase the 2029 Notes upon the occurrence of certain fundamental change transactions at a redemption price equal to 100% of the principal amount of the 2029 Notes redeemed, plus accrued and unpaid interest up to the day before the redemption date.

Holders of the 2029 Notes may convert all or a portion of their 2029 Notes at their option prior to May 1, 2029, in multiples of $1,000 principal amounts, only under the following circumstances (i) during any calendar quarter commencing after the quarter ended on September 30, 2025 (and only during such calendar quarter), if our common stock price exceeds 130% of the conversion price for at least 20 trading days during the 30 consecutive trading days at the end of the prior calendar quarter; (ii) during the five consecutive business days immediately after any 10 consecutive trading day period in which the trading price per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price per share of our common stock on such trading day and the conversion rate on such trading day; (iii) upon the occurrence of specified corporate events or certain distributions on our common stock; or (iv) if we call any or all 2029 Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date, but only with respect to the notes called for redemption.

On or after May 1, 2029, the 2029 Notes are convertible at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. Holders of the 2029 Notes who convert the 2029 Notes in connection with a make-whole fundamental change, as defined in the indenture governing the 2029 Notes, or in connection with a redemption may be entitled to an increase in the conversion rate.

We accounted for the issuance of the 2029 Notes as a single liability measured at its amortized cost, as no other embedded features require bifurcation and recognition as derivatives. The following table is a summary of the 2029 Notes as of September 30, 2026 (in thousands):

The 2029 Notes were not eligible for conversion as of September 30, 2026. No sinking fund is provided for the 2029 Notes, which means that we are not required to redeem or retire them periodically. As of September 30, 2026 we were in compliance with applicable financial covenants under the indenture governing the 2029 Notes.

For each of the three months ended September 30, 2026 and 2025, total interest expense for the 2029 Notes was $2.4 million, which consisted of $2.0 million of contractual interest expense and $0.4 million of amortization of debt discount and issuance costs. The unamortized debt issuance cost is amortized on the effective interest method over the life of the 2029 Notes.

0.50% Convertible Senior Notes Due 2031 (“2031 Notes”)

In November 2025, we issued an aggregate of $575.0 million principal amount of 0.50% convertible senior notes due in February 2031 in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act at an issuance price equal to 98% of the principal amount. The 2031 Notes were issued pursuant to and are governed by an indenture dated November 20, 2025. The proceeds from the issuance of the 2031 Notes were approximately $563.0 million, net of the issuance discount and debt issuance costs.

The 2031 Notes are unsecured obligations which bear regular interest at 0.50% per annum payable semiannually in arrears on February 1 and August 1 of each year, beginning on August 1, 2026. The 2031 Notes will mature on February 1, 2031, unless repurchased, redeemed, or converted in accordance with their terms prior to such date. The 2031 Notes are convertible into a combination of cash and shares of our common stock, at an initial conversion rate of 2.8263 shares of common stock per $1,000 principal amount of 2031 Notes, which is equivalent to an initial conversion price of approximately $353.82 per share of our common stock. The default settlement method is a combination settlement with a specified dollar amount of $1,000 per $1,000 principal amount of notes. The conversion rate is subject to customary adjustments for certain dilutive events. We may redeem for cash all or any portion of the 2031 Notes, at our option, on or after February 6, 2029 if the last reported sale price of our common stock has been at least 130% of the conversion price then in effect for at least 20 trading days at a redemption price equal to 100% of the principal amount of the 2031 Notes to be redeemed, plus accrued and unpaid interest up to the day before the redemption date. The holders of the 2031 Notes may require us to repurchase the 2031 Notes upon the occurrence of certain fundamental change transactions at a redemption price equal to 100% of the principal amount of the 2031 Notes redeemed, plus accrued and unpaid interest up to the day before the redemption date.

Holders of the 2031 Notes may, at their option, convert all or a portion of their 2031 Notes prior to November 1, 2030, in multiples of $1,000 principal amounts, only (i) during any calendar quarter if our common stock price exceeds 130% of the conversion price for at least 20 trading days during the 30 consecutive trading days at the end of the prior calendar quarter, (ii) during the five consecutive business days immediately after any 10 consecutive trading day period in which the trading price per $1,000 principal amount of the 2031 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price per share of our common stock on such trading day and the conversion rate on such trading day, (iii) upon the occurrence of specified corporate events or certain distributions on our common stock; or (iv) if we call any or all of the 2031 Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date, but only with respect to the 2031 Notes called for redemption.

On or after November 1, 2030, the 2031 Notes will be convertible by the holders thereof at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. Holders of the 2031 Notes who convert the 2031 Notes in connection with a make-whole fundamental change, as defined in the indenture governing the 2031 Notes, or in connection with a redemption may be entitled to an increase in the conversion rate.

We accounted for the issuance of the 2031 Notes as a single liability measured at its amortized cost, as no other embedded features require bifurcation and recognition as derivatives. The following table is a summary of the 2031 Notes as of September 30, 2026 (in thousands):

The 2031 Notes were not eligible for conversion as of September 30, 2026. No sinking fund is provided for the 2031 Notes, which means that we are not required to redeem or retire them periodically. As of September 30, 2026 we were in compliance with applicable financial covenants under the indenture governing the 2031 Notes.

For the three months ended September 30, 2026, total interest expense for the 2031 Notes was $1.3 million, which consisted of $0.7 million of contractual interest expense and $0.6 million of amortization of debt discount and issuance costs. The unamortized debt issuance cost is amortized on the effective interest method over the life of the 2031 Notes.

Other Borrowings

Several of our foreign subsidiaries maintain bank lines-of-credit, denominated in local currencies and U.S. dollars, primarily for the issuance of letters-of-credit. As of September 30, 2026, $61.8 million was outstanding under these letter-of-credit facilities. As of September 30, 2026, the total amount available under these credit facilities was $58.4 million.

9. Stockholders’ Equity

Stock-based Compensation

As of September 30, 2026, we maintained the Amended and Restated 2012 Incentive Award Plan (the “OSI Plan”) as a stock-based employee compensation plan.

We recorded stock-based compensation expense in the consolidated statements of operations as follows (in thousands):

As of September 30, 2026, total unrecognized compensation cost related to stock-based compensation grants under the OSI Plan was estimated at $0.8 million for stock options and $18.1 million for restricted stock units (“RSUs”). We expect to recognize these costs over a weighted-average period of 1.7 years with respect to the stock options and 2.4 years for grants of RSUs.

The following summarizes stock option activity during the three months ended September 30, 2026:

The following summarizes RSU award activity during the three months ended September 30, 2026:

As of September 30, 2026, there were approximately 1.4 million shares available for grant under the OSI Plan. Under the terms of the OSI Plan, RSUs and restricted stock granted from the pool of shares available for grant reduce the pool by 1.87 shares for each award granted. RSUs and restricted stock forfeited and returned to the pool of shares available for grant increase the pool by 1.87 shares for each award forfeited.

We granted 48,185 and 34,962 performance-based awards during the three months ended September 30, 2025 and 2026, respectively. These performance-based RSU awards are contingent on the achievement of certain performance metrics. The payout related to these awards can range from zero to 280% of the original number of shares or units awarded. Compensation costs associated with these performance-based RSUs are recognized based on the estimated number of shares that we ultimately expect will vest. If the estimated number of shares to vest is revised in the future, then stock-based compensation expense will be adjusted accordingly.

Stock Repurchase Program

In August 2026, our Board of Directors approved an additionalone million shares for repurchase under our stock repurchase program. This program does not expire unless our Board of Directors acts to terminate the program. The timing and actual numbers of shares to be purchased under this program depend on a variety of factors, including stock price, general business and market conditions and other investment opportunities. Repurchases may be made from time to time under the program through open-market purchases or privately-negotiated transactions at our discretion. Upon repurchase, the shares are restored to the status of authorized but unissued shares, and we record them in our consolidated financial statements as a reduction in the number of shares of common stock issued and outstanding.

During the three months ended September 30, 2026, we repurchased 305,559 shares of common stock under our current program. As of September 30, 2026, there were 773,172 shares remaining available for repurchase under the authorized repurchase program.

Dividends

We have not paid any dividends since the consummation of our initial public offering in 1997 and we do not currently intend to pay any dividends in the foreseeable future. Our Board of Directors will determine the payment of future dividends, if any. Certain of our current bank credit facilities restrict the payment of dividends and future borrowings may contain similar restrictions.

10. Commitments and Contingencies

Acquisition-Related Contingent Obligations

Under the terms and conditions of the purchase agreements associated with certain acquisitions, we may be obligated to make additional payments based on the achievement of certain sales or profitability milestones through the acquired operations. For agreements that contain contingent consideration caps, the remaining maximum amount of such potential future payments was $50.9 million as of September 30, 2026.

These projections and probabilities are used to estimate future contingent earnout payments, which are discounted back to present value to compute contingent earnout liabilities. The following table provides a roll-forward from June 30, 2026 to September 30, 2026 of the contingent consideration liability, which is included in other accrued expenses and current liabilities, and other long-term liabilities in our consolidated balance sheets (in thousands):

Guarantees

We are periodically required to provide performance bonds to do business with certain customers. These arrangements are common in the industry and generally have terms ranging betweenone year andten years. The bonds are provided by various bonding agencies. However, we are ultimately liable for claims that may occur against them. As of June 30, 2026 and September 30, 2026, we had a maximum financial exposure related to performance bonds of approximately $102 million and $103 million, respectively. As described in Note 8, we and several of our foreign subsidiaries have issued letters of credit under the revolving credit facility and international bank facilities. These letters of credit are issued to protect various customers, suppliers and government agencies under contractual arrangements and regulatory requirements. We have no history of significant claims and there are no pending matters that would require us to perform under any of these arrangements, and we believe that the resolution of any claims that might arise in the future, either individually or in the aggregate, would not materially affect the consolidated financial statements. Accordingly, no liability for any of these arrangements has been recorded as of June 30, 2026 and September 30, 2026.

Environmental Contingencies

We are subject to various environmental laws. We conduct environmental investigations at our manufacturing facilities in North America, Asia-Pacific, and Europe, and, to the extent practicable, on all new properties to identify, as of the date of such investigation, potential areas of environmental concern related to past and present activities or from nearby operations. In certain cases, we have conducted further environmental assessments consisting of soil and groundwater testing and other investigations deemed appropriate by independent environmental consultants.

At present, we are not considered a responsible party to any environmental release or contamination, nor are we responsible for any environmental remediation at sites we occupy currently or have occupied in the past. We have not accrued for loss contingencies relating to environmental matters because we believe that, although unfavorable outcomes are possible, they are not considered by our management to be probable and reasonably estimable. If one or more of these environmental matters are resolved in a manner adverse to us, the impact on our business, financial condition, results of operations and cash flow could be material.

Indemnifications

In the normal course of business, we have agreed to indemnify certain parties with respect to certain matters. We have agreed to hold certain parties harmless against losses arising from a breach of representations, warranties or covenants, or intellectual property infringement or other claims made by third parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. In addition, we have entered into indemnification agreements with our directors and certain of our officers. It is not possible to determine the maximum potential amount under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. We have not recorded any liability for costs related to contingent indemnification obligations as of September 30, 2026.

Legal Proceedings

We are involved in various potential or actual claims and legal proceedings arising in the ordinary course of business. In our opinion after consultation with legal counsel, the ultimate disposition of such proceedings is not likely to have a material adverse effect on our business, financial condition, results of operations or cash flows. We have not accrued for loss contingencies relating to any non-ordinary course matters because we believe that, although unfavorable outcomes in the proceedings are possible, they are not considered by management to be probable and reasonably estimable. If one or more of these matters are resolved in a manner adverse to our company, the impact on our business, financial condition, results of operations and cash flows could be material.

11. Income Taxes

The determination of the annual effective tax rate is based upon a number of significant estimates and judgments, including the estimated annual pretax income in each tax jurisdiction in which we operate and the development of tax planning strategies during the year. In addition, as a global commercial enterprise, our tax expense can be impacted by changes in tax rates or laws, the finalization of tax audits and reviews and other factors that cannot be predicted with certainty. As such, there can be significant volatility in interim tax provisions.

The effective tax rates for the three months ended September 30, 2025 and 2026 were 19.9% and 18.8%, respectively. During the three months ended September 30, 2025 and 2026, we recognized a net discrete tax benefit of $0.9 million and $1.2 million, respectively, related to equity-based compensation under ASU 2016-09 and uncertain tax positions.

12. Segment Information

We operate inthree identifiable industry segments: (a) security and inspection systems (Security division), (b) optoelectronic devices and manufacturing (Optoelectronics and Manufacturing division) and (c) medical monitoring systems (Healthcare division). Factors used to identify our reportable segments primarily reflect our organizational and management structure around differences in products and industry markets. The reconciliation of segment totals to consolidated totals includes intersegment eliminations and certain unallocated corporate items that include executive compensation and certain other general and administrative expenses; expenses related to stock issuances, legal, audit and other professional service fees, depreciation and amortization, and corporate assets. Both the Security and Healthcare divisions comprise primarily end-product businesses whereas the Optoelectronics and Manufacturing division primarily supplies components and subsystems to external OEM customers, as well as to the Security and Healthcare divisions. Sales between divisions are at transfer prices that approximate market values. All other accounting policies of the segments are the same as described in Note 1, Summary of Significant Accounting Policies. We disclose segment income (loss) from operations as our measure of segment profit/loss, reconciled to consolidated income (loss) from operations. The measure of segment income (loss) from operations excludes restructuring and other charges presented below which are presented to reconcile to consolidated income from operations. Segment assets represent total current and noncurrent assets for each reportable segment. Business segment disclosures consider information used by/provided to our chief operating decision maker (“CODM”). Our Chief Executive Officer serves as the CODM. The CODM uses segment assets and segment income (loss) from operations, as well as the expenses within each segment including cost of sales, selling, general and administrative expenses and research and development expenses, to allocate resources to segments in the budgeting and forecasting process along with periodic ongoing reviews of results and overall activity in the markets where each segment operates.

The following tables present our results of operations and identifiable assets by our three industry segments, along with amounts for intersegment eliminations and unallocated corporate items, which are reconciled to consolidated amounts (in thousands):

(2)As of June 30, 2026 and September 30, 2026, one customer in the Security division accounted for 25% of accounts receivable, net.

(3)Eliminations in assets reflect the amount of inter-segment profits in inventory and inter-segment ROU assets under ASC 842 as of the balance sheet date. Such inter-segment profit will be realized when inventory is shipped to the external customers of the Security and Healthcare divisions.