Oscar Health, Inc.

Notes to Condensed Consolidated Financial Statements (unaudited)

(in thousands, except per share amounts, or as otherwise stated herein)

1. ORGANIZATION

Oscar Health, Inc., together with its subsidiaries (either individually or collectively referred to as “Oscar” or the “Company”), is a leading healthcare technology company, whose mission is to make a healthier life accessible and affordable for all. The Company’s Class A common stock is traded on the New York Stock Exchange under the symbol “OSCR”.

Oscar operates asone reportable segment to sell insurance to individuals, families, and employees through the federal and state-run healthcare exchanges formed in conjunction with the Patient Protection and Affordable Care Act (“ACA”) and leverages its technology platform to provide services via its +Oscar offering. In May 2025, the Company purchased 100% of the equity interests inthree businesses operating in the individual market: INSXCloud, Inc. (an approved enhanced direct enrollment platform), IHC Specialty Benefits, Inc. (an insurance agency that sells individual medical and supplemental health products), and Healthinsurance.org, LLC (an online resource providing educational content for consumers navigating health insurance and the ACA marketplace). The Company determined that the Chief Executive Officer is the chief operating decision maker (“CODM”) who regularly reviews financial information and other key performance indicators on a consolidated basis, for the purposes of allocating resources and evaluating financial performance. Factors used in determining the reportable segment include the nature of operating activities, the Company’s organizational and reporting structure, and the type of information presented to the Company’s CODM to allocate resources and evaluate financial performance.

The Company’s member-first philosophy and innovative approach to care has earned the trust of approximately 2.1 million effectuated members (“members”), as of September 30, 2025. Effectuated members are those who are actively enrolled in one of the Company’s plans and whose required premium payments have either been made or are within the payment grace period.

Basis of Presentation

The accompanying interim Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), and the applicable rules and regulations of the Securities and Exchange Commission for interim financial information. As such, these financial statements do not include all information and footnotes required by U.S. GAAP for complete financial statements.

These Condensed Consolidated Financial Statements are unaudited; however, in the opinion of management, they reflect all adjustments, consisting only of normal recurring adjustments, necessary to state fairly the information presented in conformity with U.S. GAAP applicable for the interim periods presented. The results of operations for the interim periods presented are not necessarily indicative of results for the full year or future periods. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and related notes thereto included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission for the year ended December 31, 2024.

During the second quarter of 2025, management identified an understatement of Selling, general, and administrative (“SG&A”) expenses related to the 2023-2024 periods. In accordance with Staff Accounting Bulletin ("SAB") No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements with Quantifying Misstatements in Current Year Financial Statements, the Company evaluated the error and determined that the out of period adjustment was not material to the consolidated financial statements for the current interim period or to any previously reported annual or interim periods. Accordingly, the Company recorded a $14.9 million adjustment in the second quarter of 2025 within SG&A expenses related to prior periods. Certain monetary amounts, percentages, and other figures included in this Quarterly Report on Form 10-Q have been subject to rounding adjustments. Percentage amounts included in this Quarterly Report on Form 10-Q have not in all cases been calculated on the basis of such rounded figures, but on the basis of such amounts prior to rounding. For this reason, percentage amounts in this Quarterly Report on Form 10-Q may vary from those obtained by performing the same calculations using the figures in the Company's Condensed Consolidated Financial Statements included elsewhere in this Quarterly Report on Form 10-Q. Certain other amounts that appear in this Quarterly Report on Form 10-Q may not sum due to rounding.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes. Significant estimates inherent in the preparation of the accompanying interim Condensed Consolidated Financial Statements include healthcare costs incurred but not yet reported (“IBNR”) and risk adjustment transfers. Estimates are based on past experience, evaluation of current trends, information from third-party professionals, and other considerations that are reasonable under the circumstances. Actual results may differ materially from these estimates.

Accounting Pronouncements - Not Yet Adopted

In December 2023, the FASB issued Accounting Standards Update No. 2023-09 (“ASU 2023-09”), Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which is intended to improve the transparency of income tax disclosures by requiring greater disaggregation of income tax disclosures related to the income tax rate reconciliation and income taxes paid and other amendments to improve the effectiveness of income tax disclosures. This guidance is effective for annual periods beginning after December 15, 2024, with early adoption permitted. ASU 2023-09 applies on a prospective basis; however, retrospective application in all prior periods presented is permitted. The Company plans to apply the disclosure requirements on a retrospective basis upon adoption. While the standard will require additional disclosures related to the Company’s income taxes for 2025 and prior periods included in our consolidated financial statement disclosures, the standard is not expected to have any material impact on the Company’s consolidated operating results, financial condition, or cash flows.

In November 2024, the FASB issued Accounting Standards Update No. 2024-03 (“ASU 2024-03”), Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires additional disclosures in the Notes to Condensed Consolidated Financial Statements, disaggregating specific expense categories for relevant income statement captions and additional disclosures of the Company's total amount of selling expenses. This guidance is effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027, with early adoption permitted. While the standard will require additional disclosures related to the Company’s income statement, the standard is not expected to have any material impact on the Company’s consolidated operating results, financial condition, or cash flows. The Company is currently evaluating the impact of the adoption of this guidance on the related disclosures.

In September 2025, the FASB issued Accounting Standards Update No. 2025-06 (“ASU 2025-06”), Intangibles–Goodwill and Other – Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which modernizes the recognition and disclosure framework for internal-use software costs, removing all references to “development stages” and introducing a more judgement-based approach. This guidance is effective for annual periods beginning after December 15, 2027, and interim periods within those annual reporting periods. This ASU is applicable to the Company’s fiscal year beginning January 1, 2028, with early application permitted. The transition method may be prospective, modified, or retrospective. The Company is currently evaluating the impact of the adoption of this guidance on the Company’s consolidated financial statements and disclosures.

2. EARNINGS PER SHARE

Basic earnings per share (“EPS”) is computed by dividing Net income (loss) attributable to Oscar Health, Inc. for the period by the weighted-average shares of common stock outstanding during the period.

In periods when the Company is in a net loss position, potentially dilutive securities are excluded from the computation of diluted EPS because their inclusion would have an anti-dilutive effect; thus, basic EPS is the same as diluted EPS.

During periods of net income, diluted EPS is computed by adjusting Net income attributable to Oscar Health, Inc. for any interest charges, net of tax, related to the Company’s convertible notes, as well as for the changes in the fair value of the bifurcated conversion option to the extent these instruments are dilutive. This adjusted net income is then divided by the sum of the basic weighted-average shares of common stock outstanding and any dilutive potential common stock outstanding during the period, using the treasury stock method and the if-converted method for convertible senior notes, as described in“Note 8 - Debt.” Potential common stock includes the effect of outstanding dilutive stock options, restricted stock units, and performance-based restricted stock units. The computations for basic and diluted EPS are as follows:

The following potential common shares were excluded from the computation of diluted EPS because including them would have had an anti-dilutive effect:

The Company entered into capped call transactions in connection with the 2030 Notes (as defined in “Note 8 - Debt”). The effect of the capped call transactions was excluded from the calculation of diluted earnings per share as the effect of the capped calls would have been anti-dilutive. The capped calls are generally expected to reduce the potential dilution to the Company’s common stock upon any conversion of the relevant series of the Notes (See “Note 8 - Debt” for further details).

3. REVENUE RECOGNITION

Premium

Premium revenue includes direct policy premiums collected from members and the federal government, assumed policy premiums received as part of the reinsurance arrangement under the Cigna+Oscar Small Group plan previously offered, and risk adjustment transfers. Premium revenue is net of ceded premium from excess of loss (“XOL”) and run-off quota share reinsurance contracts accounted for under reinsurance accounting (See“Note 9 - Reinsurance” for additional information on the Company’s reinsurance contracts).

The direct policy premiums received from the Centers for Medicare & Medicaid Services (“CMS”) for the three and nine months ended September 30, 2025 were $3,391.9 million and $9,779.0 million, respectively. For the three and nine months ended September 30, 2024, direct policy premiums received from CMS were $2,488.4 million and $6,952.3 million, respectively.

Other Revenues

Other revenues include revenue earned through brokerage, enhanced direct enrollment platform, and market education services, fees for services performed via the +Oscar platform, revenue sharing from virtual credit card rebates, and sublease income. Other revenue is recognized in the period the contractual performance obligations are satisfied and measured in an amount that reflects the consideration the Company expects to be entitled to in exchange for performing the services. The timing of the Company's revenue recognition may differ from the timing of payment by customers. A receivable is recorded to Premiums and accounts receivable when revenue is recognized prior to payment and there is an unconditional right to payment. Alternatively, deferred revenue is recorded to Accounts payable and other liabilities when payment is received before the performance obligations are satisfied.

4. INVESTMENTS

Net investment income was attributable to the following:

(1) Represents the net interest earned on funds withheld.

As of September 30, 2025 and December 31, 2024, the Company recorded accrued investment income of $23.4 million and $19.8 million, respectively.

The following tables provide summaries of the Company's carrying amounts and fair values of available-for-sale securities by major security type as of September 30, 2025 and December 31, 2024:

(1) Includes equity securities without a readily determinable market value.

(1) Includes equity securities without a readily determinable market value.

The following tables present the estimated fair value and gross unrealized losses of fixed maturity securities in a gross unrealized loss position, by the length of time in which the securities have continuously been in that position, as of September 30, 2025 and December 31, 2024:

The Company monitors available-for-sale debt securities for credit losses and recognizes an allowance for credit losses when factors indicate a decline in the fair value of a security is credit-related. Certain investments may experience a decline in fair value due to changes in market interest rates, changes in general economic conditions, or a deterioration in the credit worthiness of a security's issuer. For securities in an unrealized loss position that the Company does not intend to sell, the Company has assessed the gross unrealized losses during the period and determined an allowance for credit losses is not necessary because the declines in fair value are believed to be due to market fluctuations and not due to credit-related events.

The amortized cost and fair value of the Company's fixed maturity securities as of September 30, 2025 and December 31, 2024 by contractual maturity are shown below. Actual maturities of these securities could differ from their contractual maturities because issuers may have the right to call or prepay obligations, with or without penalties.

5. FAIR VALUE MEASUREMENTS

Fair value represents the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants. The Company's financial assets and liabilities measured at fair value on a recurring basis are categorized into a three-level fair value hierarchy based on the priority of the inputs used in the fair value valuation technique.

The levels of the fair value hierarchy are as follows:

•Level 1: Inputs utilize quoted (unadjusted) prices in active markets for identical assets or liabilities.

•Level 2: Inputs utilize quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; or model-derived valuations in which all significant inputs are observable in active markets.

•Level 3: Inputs utilized are unobservable but significant to the fair value measurement for the asset or liability. The unobservable inputs are used to measure fair value to the extent relevant observable inputs are not available. The unobservable inputs typically reflect management’s own estimates about the assumptions a market participant would use in pricing the asset or liability.

The following tables summarize fair value measurements by level for assets and liabilities measured at fair value on a recurring basis:

6. RESTRICTED CASH AND RESTRICTED DEPOSITS

The Company maintains cash, cash equivalents, and investments on deposit that are pledged to various state agencies in connection with its insurance licensure or property leases. The restricted cash and cash equivalents and restricted investments presented below are included in Restricted deposits in the accompanying Condensed Consolidated Balance Sheets.

7. BENEFITS PAYABLE

Reserves for medical claims expenses are estimated using actuarial assumptions and recorded as Benefits payable liabilities on the Condensed Consolidated Balance Sheets. The assumptions for the estimates and for establishing the resulting liability are reviewed and any adjustments to reserves are reflected in the Condensed Consolidated Statements of Operations in the period in which the estimates are updated.

The following table provides a rollforward of the Company’s beginning and ending benefits payable and claims adjustment expenses (“CAE”) payable balances for the nine months ended September 30, 2025 and 2024:

Amounts incurred related to prior periods vary from previously estimated liabilities as more claim information becomes available and claims are ultimately settled. The favorable prior period development recognized in the nine months ended September 30, 2025 resulted primarily from lower than expected paid claims for 2024.

8. DEBT

Convertible Senior Notes

As previously disclosed in“Note 9 - Debt,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, in February 2022, the Company issued $305.0 million in aggregate principal amount of convertible senior notes due 2031 (the “2031 Notes”) in a private placement to funds affiliated with or advised by Dragoneer Investment Group, LLC, Thrive Capital, LionTree Investment Management, LLC, and Tenere Capital LLC (the “Initial Purchasers”). In connection with the issuance of the 2031 Notes, on January 27, 2022, the Company entered into an investment agreement with the Initial Purchasers (the “Investment Agreement”) and on February 3, 2022, the Company entered into an indenture with U.S. Bank, as Trustee (the “2031 Indenture”). On September 11, 2025, the Company entered into an amendment to the Investment Agreement to permit the private offering of the 2030 Notes (as defined below) under the Investment Agreement.

The 2031 Notes are the Company's senior, unsecured obligations which bear interest at a rate of 7.25% per annum, payable in cash, semi-annually in arrears on June 30 and December 31 of each year, commencing on June 30, 2022. The 2031 Notes will mature on December 31, 2031, subject to earlier repurchase, redemption, or conversion.

Upon the occurrence of a fundamental change (as defined in the 2031 Indenture), holders of the 2031 Notes have the right to require the Company to repurchase all or some of their 2031 Notes for cash, subject to certain conditions. The repurchase price will be equal to the principal amount of the notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the applicable repurchase date. Additionally, the initial purchasers of the 2031 Notes have the right to require the Company to repurchase all of their 2031 Notes for cash, on each of June 30, 2027, June 30, 2028, June 30, 2029 and June 30, 2030, subject to certain notice requirements.

The Company may not redeem the 2031 Notes before December 31, 2026. The Company may redeem all of the 2031 Notes from December 31, 2026 to the 35th scheduled trading day before the maturity date, at the redemption price. To do so, the last reported sale price per share of Class A common stock must have exceeded 200% of the conversion price for 20 of the last 30 consecutive trading days immediately before the date on which the Company sends the applicable redemption notice. The redemption price will be a cash amount equal to the principal amount of the 2031 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. If the Company calls any of the 2031 Notes for redemption, the Initial Purchasers may elect to convert their 2031 Notes and receive shares of Class A common stock pursuant to the terms of the Investment Agreement.

The 2031 Notes are initially convertible into the Company's Class A common stock at a price of approximately $8.32 per share of Class A common stock (based on an initial conversion rate of 120.1721 per $1,000 principal amount), subject to customary adjustments upon the occurrence of certain events. The holders may elect to convert their 2031 Notes: (i) on or after August 31, 2031, (ii) if the Company calls the 2031 Notes for redemption, (iii) upon satisfaction of a Class A common stock sale price condition, (iv) upon satisfaction of a 2031 Note trading price condition, or (v) upon certain corporate events. Upon conversion, the Company may choose to settle the 2031 Notes in shares of Class A common stock, cash, or a combination of both, unless an Initial Purchaser of the 2031 Notes elects to receive shares of Class A common stock pursuant to the terms of the Investment Agreement. During the quarterly period ended September 30, 2025, the Class A common stock sales price condition was satisfied because the last reported sales price per share of the Company’s common stock exceeded 130% of the conversion price of $8.32 per share for twenty (20) trading days of the thirty (30) consecutive trading days ending on the last trading day of the quarter. As a result, the holders may elect to convert their 2031 Notes during the fourth quarter of 2025.

In October 2025, the Company received conversion notices from certain of the Initial Purchasers to convert a total of $20.0 million in aggregate principal amount of the 2031 Notes. The Company elected to issue approximately 2.4 million shares of Class A common stock to settle these conversions.

On November 3, 2025, the Company and Oasis FD Holdings, LP (“Dragoneer”) entered into an Exchange Agreement (the “Exchange Agreement”) pursuant to which, until December 14, 2025, Dragoneer may elect to exchange up to $250,000,000 aggregate principal amount of the 2031 Notes, representing the balance of its 2031 Notes, for aggregate consideration consisting of (A) a number of shares of Class A common stock based on the conversion rate set forth in the 2031 Indenture, and (B) up to $17.8 million, payable in shares of Class A common stock and/or cash, pursuant to the terms of the Exchange Agreement and subject to the satisfaction of certain conditions. On November 5, 2025, Dragoneer exchanged $187,500,000 aggregate principal amount of the 2031 Notes in exchange for 23,273,179 shares of Class A common stock.

In connection with the Exchange Agreement and the related transactions, as of November 5, 2025, the debt covenants in the Investment Agreement were extinguished, and the 2030 Notes (as defined below) ceased to be subordinated to the 2031 Notes.

Convertible Senior Subordinated Notes

On September 18, 2025, the Company issued $410.0 million aggregate principal amount of convertible senior subordinated notes due 2030 (the “2030 Notes”). The 2030 Notes were issued pursuant to an indenture (the “2030 Indenture”), dated as of September 18, 2025, between the Company and U.S. Bank Trust Company, National Association, as trustee.

The 2030 Notes are the Company’s unsecured subordinated indebtedness which bear interest at a rate of 2.25% per annum, payable semi-annually in arrears on March 1 and September 1 of each year, beginning on March 1, 2026. The 2030 Notes will mature on September 1, 2030, unless they are earlier repurchased, redeemed, or converted.

Upon the occurrence of a fundamental change (as defined in the 2030 Indenture), holders of the 2030 Notes may require the Company to repurchase their 2030 Notes for cash, subject to certain conditions. The repurchase price will be equal to the principal amount of the 2030 Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the repurchase date.

The Company may redeem the 2030 Notes, in whole or in part (subject to certain limitations described below), from September 6, 2028 to the 25th scheduled trading day before the maturity date. To do so, (i) the 2030 Notes must be freely tradable (as defined in the 2030 Indenture) as of the date of the redemption notice, the Company must be current in its interest payment obligations to the 2030 Notes holders; and (ii) the last reported sale price per share of the Company’s Class A common stock must have exceeded 130% of the conversion price on (1)20 of the last 30 consecutive trading days immediately before the date the Company sends the applicable redemption notice; and (2) the trading day immediately before the date the Company sends such redemption notice. The Company may only redeem less than all of the outstanding 2030 Notes if at least $100.0 million aggregate principal amount of 2030 Notes are outstanding (and not called for redemption) when the Company sends the redemption notice. The redemption price will be a cash amount equal to the principal amount of the 2030 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. Calling any 2030 Note for redemption will constitute a make-whole fundamental change (as defined in the 2030 Indenture) with respect to that 2030 Note, so the conversion rate for that 2030 Note will be increased in certain circumstances if it is converted after it is called for redemption.

Before June 1, 2030, noteholders may only convert their 2030 Notes upon the occurrence of certain events. From June 1, 2030 until the second scheduled trading day before the maturity date, noteholders may elect to convert their 2030 Notes at any time. The Company may choose to settle conversions in cash, shares of its Class A common stock, or a combination of both. The initial conversion price is approximately $24.82 per share of the Company’s Class A common stock (based on an initial conversion rate of 40.2946 shares of the Company’s Class A common stock per $1,000 principal amount of 2030 Notes). The conversion rate and conversion price are subject to customary adjustments upon the occurrence of certain events. In addition, if certain make-whole fundamental changes occur, the conversion rate will, in certain circumstances, be increased for a specified period of time.

The following is a summary of net carrying amounts and the estimated fair values of the Company’s convertible notes:

The following table presents the interest expense over the term of the Company’s convertible notes:

Capped Call Transactions

On September 15, 2025, in connection with the pricing of the offering of 2030 Notes, the Company entered into privately negotiated capped call transactions (the “Base Capped Call Transactions”) with certain of the 2030 Notes initial purchasers or their affiliates and certain other financial institutions (the “Option Counterparties”). In addition, on September 16, 2025, in connection with the initial purchasers’ exercise of their option to purchase additional 2030 Notes, the Company entered into additional capped call transactions (the “Additional Capped Call Transactions,” and, together with the Base Capped Call Transactions, (the “Capped Call Transactions”) with each of the Option Counterparties.

The Capped Call Transactions cover the aggregate number of shares of the Company’s Class A common stock that initially underlie the 2030 Notes (subject to customary anti-dilution adjustments), and are expected to reduce potential dilution to the Company’s Class A common stock upon any conversion of 2030 Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted 2030 Notes, with such reduction and/or offset subject to a cap, based on the cap price of the Capped Call Transactions. The cap price of the Capped Call Transactions is initially $37.46 per share (subject to adjustment under the terms of the Capped Call Transactions), which represents a premium of 100% over the last reported sale price of the Company’s Class A common stock on September 15, 2025. The cost of the Capped Call Transactions was approximately $34.4 million.

For accounting purposes, the Capped Call Transactions are separated from the 2030 Notes. As the Capped Call Transactions qualify for a scope exception from derivative accounting for instruments that are both indexed to the issuer’s own stock and classified in stockholders’ equity, the premiums paid for the purchase of the Capped Call Transactions are recorded as a reduction to additional paid-in capital. The Capped Call Transactions will not be remeasured as long as they continue to meet the conditions for equity classification.

Revolving Credit Facility

As previously disclosed in “Note 9 - Debt,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, on December 28, 2023, the Company entered into a third amendment to its senior secured credit agreement with Wells Fargo Bank, National Association, as lender and administrative agent, and certain other lenders party thereto from time to time (collectively, the “Lenders”), and Oscar Management Corporation, as a subsidiary guarantor, which amended the senior secured credit agreement, dated as of February 21, 2021 (as previously amended by the First Amendment to Credit Agreement, dated as of January 27, 2022 and the Second Amendment to Credit Agreement, dated as of July 21, 2023, the “Amended Credit Agreement”). The Amended Credit Agreement provided for a revolving loan credit facility (the “Revolving Credit Facility”) in the aggregate principal amount of $115.0 million, with proceeds to be used for general corporate purposes of the Company. On September 18, 2025, the Company terminated the Revolving Credit Facility. At the time of termination, there wereno outstanding borrowings under the Revolving Credit Facility.

9. REINSURANCE

The Company participates in quota share reinsurance to limit risk and capital requirements and XOL reinsurance to mitigate the exposure of high cost or catastrophic member risk. The quota share reinsurance arrangements are with more than one counterparty with multiple state-level treaties. The XOL reinsurance arrangements are with a private counterparty and federal and state-run programs. A summary of the Company's reinsurance agreements and related accounting treatment is included in“Note 11 - Reinsurance,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024.

As previously disclosed in“Note 1 - Organization,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, the Company did not renew the Cigna+Oscar Small Group arrangement after the expiration of the initial term on December 31, 2024, and will continue to provide transition and run-off services through December 31, 2026, and share proportionally in all premiums and claims for any Cigna+Oscar Small Group plan sold or issued on or before December 15, 2024, in accordance with the terms of the arrangement.

Reinsurance Contracts Accounted for under Deposit Accounting

As of September 30, 2025 and December 31, 2024, a deposit liability balance of $93.6 million and $13.6 million, respectively, was recorded for the Company's quota share arrangements accounted for under deposit accounting and represented fees due to the reinsurer, which are recognized within Selling, general, and administrative expenses on the Consolidated Statements of Operations.

For the three and nine months ended September 30, 2025, the Company ceded 47% and 49%, respectively, of its premium under reinsurance contracts accounted for under deposit accounting. For the three and nine months ended September 30, 2024, the Company ceded 51% and 53%, respectively, of its premium under reinsurance contracts accounted for under deposit accounting.

Reinsurance Contracts Accounted for under Reinsurance Accounting

In the current year, reinsurance accounting applies to XOL treaties. In 2024, reinsurance accounting also applied to quota share reinsurance contracts that were in runoff. The tables below present information for the Company's reinsurance arrangements accounted for under reinsurance accounting. Please see“Note 3 - Revenue Recognition” for total reinsurance premiums ceded and reinsurance premiums assumed, which are included as components of total Premium revenue in the Condensed Consolidated Statements of Operations.

The following table reconciles total Medical expenses to the amount presented in the Condensed Consolidated Statements of Operations:

The Company records SG&A expenses net of reinsurance ceding commissions and assumed SG&A expenses. The following table reconciles total Selling, general, and administrative expenses to the amount presented in the Condensed Consolidated Statements of Operations:

The composition of the Reinsurance recoverable balance on the Condensed Consolidated Balance Sheets is as follows:

Credit Ratings

The financial condition of the Company's reinsurers is regularly evaluated to minimize exposure to significant losses. A key credit quality indicator for reinsurance is the financial strength ratings issued by the credit rating agencies, which provide an independent opinion of a reinsurer’s ability to meet ongoing obligations to policyholders. The Company’s reinsurers have most recently been issued financial strength ratings of A+ or higher.

The creditworthiness of each reinsurer is evaluated in order to assess counterparty credit risk and estimate an allowance for expected credit losses on the Company's reinsurance recoverable balances.

10. BUSINESS ARRANGEMENTS

Variable Interest Entities

The Company entered into business arrangements with integrated health systems, as well as medical professional corporations that employ health care providers to deliver telemedical healthcare services to its covered member population in various states. The financial results of these entities are consolidated into the Company's financial statements.

The following table presents the collective assets and liabilities of the Company's variable interest entities:

11. RELATED PARTY TRANSACTIONS

In February 2022, the Company issued the 2031 Notes to funds affiliated with, among others, Thrive Capital (collectively, the “Initial Purchasers”). See“Note 8 - Debt” for additional information. In addition, pursuant to the Investment Agreement entered into with the Initial Purchasers, the Company agreed to amend the Twelfth Amended and Restated Investors' Rights Agreement dated as of March 5, 2021 (the “Investors’ Rights Agreement”), by and among the Company and the investors party thereto, to provide that the Notes and shares of Class A common stock issued or issuable upon conversion of any 2031 Notes held by entities affiliated with Thrive Capital will be subject to the registration rights contained in the Investors' Rights Agreement. On September 11, 2025, the Company entered into an amendment to the Investment Agreement to permit the private offering of the 2030 Notes.

12. COMMITMENTS AND CONTINGENCIES

The Company’s current and past business practices are subject to review or other investigations by various state insurance and healthcare regulatory authorities and other state and federal regulatory authorities. These reviews focus on numerous facets of the Company’s business, including claims payment practices, statutory capital requirements, provider contracting, risk adjustment, competitive practices, commission payments, privacy issues, network adequacy, utilization management practices, pharmacy benefits, access to care, and sales practices, among others. Some of these reviews have historically resulted in fines imposed on the Company and some have required changes to certain of the Company’s practices. The Company continues to be subject to these reviews, which could result in additional fines or other sanctions being imposed on the Company or additional changes to certain of its practices.

The Company is also currently involved in, and may in the future from time to time become involved in, legal proceedings and other claims in the ordinary course of its business, including class actions and suits brought by the Company’s members, providers, commercial counterparties, employees, and other parties relating to the Company’s business, including management and administration of health benefit plans and other services. Such matters can include claims relating to the performance of contractual and non-contractual obligations to providers, vendors, members, employer groups, and others, including, but not limited to, the alleged failure to properly pay in-network and out-of-network claims and challenges to the manner in which the Company processes claims, disputes regarding the amounts owed under vendor contracts, various employment claims, disputes regarding reinsurance arrangements, disputes relating to intellectual property privacy, the Telephone Consumer Protection Act and class action lawsuits, or other and claims alleging that the Company has engaged in unfair business practices.

In addition, on May 12, 2022, a securities class action lawsuit against the Company, certain of its directors and officers, and the underwriters that participated in the Company’s initial public offering (“IPO”) was commenced in the United States District Court for the Southern District of New York (the “Court”), captioned Carpenter v. Oscar Health, Inc., et al., Case No. 1:22-CV-03885 (S.D.N.Y.) (the “Securities Action”). The initial complaint in the Securities Action asserted violations of Sections 11 and 15 of the Securities Act based on the Company’s purported failure to disclose in its IPO registration statement growing COVID-19 testing and treatment costs, the impact of significant Special Enrollment Period membership, and risk adjustment data validation results for 2019 and 2020. By Court orders dated September 27, 2022 and December 13, 2022, the Court appointed a lead plaintiff and lead counsel on behalf of the putative class. An amended complaint filed on December 6, 2022 asserted the same violations of Sections 11 and 15 of the Securities Act, but this time based on the Company’s alleged failure to disclose in its IPO registration statement purportedly inadequate controls and systems in connection with the risk adjustment data validation audit for 2019, alleging that this purported omission caused losses and damages for members of the putative class. The amended complaint sought unspecified compensatory damages as well as interest, fees, and costs. On April 4, 2023, the Company moved to dismiss the amended complaint. On March 6, 2025, the Court granted the motion to dismiss without prejudice and granted leave to file a second amended complaint. A second amended complaint was not timely filed and on April 22, 2025 the Court dismissed the case with prejudice.

The Company records liabilities for its reasonable estimates of probable losses resulting from these matters where appropriate. Estimates of losses resulting from legal and regulatory matters involving the Company are inherently difficult to predict, particularly where the matters: involve indeterminate claims for monetary damages or may involve fines, penalties or punitive damages; present novel legal theories or represent a shift in regulatory policy; involve a large number of claimants or regulatory bodies; are in the early stages of the proceedings; or could result in a change in business practices. Accordingly, the Company is often unable to estimate the losses or ranges of losses for those matters where there is a reasonable possibility or it is probable that a loss may be incurred, the ultimate settlement of which could be material.

Given that such proceedings are subject to uncertainty, there can be no assurance that such legal proceedings, either individually or in the aggregate, will not have a material adverse effect on Oscar's business, results of operations, financial condition or cash flows.

The ACA originally established a cost-sharing reduction (“CSR”) program to make health insurance more affordable for eligible individuals by requiring insurers to reduce out-of-pocket costs while receiving CSR subsidies from CMS. In 2017, the Trump Administration issued an executive order that immediately ceased payments of ACA CSR subsidies to issuers. A class action lawsuit was subsequently filed by impacted issuers seeking compensation for the halted CSR subsidy payments. In 2024, an agreement in principle was reached between class counsel on behalf of impacted issuers and the federal government to retroactively compensate the class. In 2025, Oscar was notified of the proposed settlement amounts for each of its impacted subsidiaries. The estimated net recovery recorded as of September 30, 2025 was $49 million.

13. SEGMENT INFORMATION

The Company operates in and reports as a single reportable segment, as the CODM does not evaluate profitability nor evaluate performance or allocate resources below the level of the consolidated Company. The accounting policies of the segment are the same as those described in “Note 2 - Summary of Significant Accounting Policies,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. The CODM reviews Net income (loss) attributable to Oscar Health, Inc. and Earnings from operations presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. These metrics serve as benchmarks to evaluate the business, measure performance, identify trends, prepare financial projections, and make strategic decisions. The CODM does not evaluate performance or allocate resources based on segment assets data; therefore, total segment assets are not presented.

The following table presents the revenue, significant expenses, and net income (loss) for the Company’s segment. As the Company operates and reports as a single segment, its measure of segment net income (loss) is the same as Net income (loss) attributable to Oscar Health, Inc. on the Condensed Consolidated Statements of Operations.

(1)Member acquisition and servicing costs include the Company’s expenses incurred to acquire, service, and fulfill obligations to members.

(2)Premium taxes, exchange fees, and other taxes and fees represent non-income tax charges from federal and state governments, including but not limited to healthcare exchange user fees and premium taxes.

(3)All other SG&A includes employee-related and administrative costs that are not member-based. Additionally, all other SG&A includes the net impact of quota share reinsurance accounted for under deposit accounting.

Significant Customers

The Company generates the majority of its total revenue from health insurance policy premiums, which primarily comes from subsidies received from CMS as part of the Advanced Premium Tax Credit program.

14. RISK ADJUSTMENT

The risk adjustment programs in the markets the Company serves are administered federally by CMS and are designed to mitigate the potential impact of adverse selection and provide stability for health insurers. Under this program, each plan is assigned a risk score based upon demographic information and current year claims information related to its members. Plans with lower than average risk scores generally pay into the pool (a payable to CMS), while plans with higher than average risk scores generally receive distributions (a receivable from CMS). The Company estimates its risk adjustment transfer receivable or payable for each state by comparing its estimated risk score to the state average risk score. The Company records a receivable or payable as an adjustment to its premium revenues to reflect the year-to-date impact of the risk adjustment based on its best estimate. The Company reevaluates its risk adjustment transfer estimates as new information and market data becomes available until final reporting is received from CMS in later periods, which may be up to twelve months in arrears.

The following table provides a rollforward of the Company’s beginning and ending risk adjustment receivable and payable balances for the nine months ended September 30, 2025 and 2024:

(1)The table includes risk adjustment data validation (“RADV”) receivables and payables. The balance at the beginning of each year presented pertains to prior policy years.

In July 2025 the Company received third-party reports, based on industry claims data through April 2025, providing estimates of the market risk score (a measure of market morbidity) for the states where it participates in the ACA. As a result of this new data, the Company significantly increased its estimate of the risk adjustment transfer as of June 30, 2025. The Company further increased its estimate of the risk adjustment transfer as of September 30, 2025 based on the updated estimates of the market risk score received in September 2025 relating to industry claims data through July 2025.