Oscar Health, Inc.

Oscar is a leading healthcare technology company built around a full stack technology platform and a relentless focus on member experience. We have been challenging the status quo in the healthcare system since our founding in 2012, and are dedicated to making a healthier life accessible and affordable for all. Oscar serves individuals, families, and employees through the Patient Protection and Affordable Care Act (“ACA”). We also offer health technology solutions that power the healthcare industry through +Oscar. In May 2025, the Company purchased 100% of the equity interests in three 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). Our technology drives superior experiences, deep engagement, and high-value clinical care, earning us 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.

We regularly review our Total revenue, Medical loss ratio (“MLR”), Selling, general, and administrative expense ratio (“SG&A expense ratio”), Earnings from operations, and Net income (loss) attributable to Oscar Health, Inc. to evaluate our business, measure our performance, identify trends in our business, prepare financial projections, and make strategic decisions. We believe these operational and financial measures are useful in evaluating our performance, in addition to our financial results prepared in accordance with GAAP.

Total Revenue

Total revenue includes Premium revenue (net of risk adjustment transfers), Investment income, and Other revenues. We believe Total revenue is an important metric to assess the growth of our business, as well as the earnings potential of our investment portfolio.

MLR

MLR is a metric used to calculate medical expenses as a percentage of net premiums before ceded quota share reinsurance. The impact of the federal risk adjustment program is included in the denominator of our MLR. We believe MLR is an important metric to demonstrate the ratio of our costs to pay for the healthcare of our members to the net premium before ceded quota share reinsurance. MLRs in our products are subject to various federal and state minimum requirements.

SG&A Expense Ratio

The SG&A expense ratio reflects the Company’s selling, general, and administrative expenses, as a percentage of Total revenue (net of risk adjustment transfers). We believe the SG&A expense ratio is useful to evaluate our ability to manage our overall selling, general, and administrative cost base.

Earnings (Loss) from Operations

Earnings (loss) from operations is the Company's Total revenue less Total operating expenses. We believe Earnings (loss) from operations is an important primary metric for assessing operating performance.

Net Income (Loss) Attributable to Oscar Health, Inc.

Net income (loss) attributable to Oscar Health, Inc. is Net earnings (loss) allocated to the Company after net income (loss) attributable to noncontrolling interests. It is a key indicator of the Company’s profitability and operational efficiency, allowing management to evaluate performance and make informed decisions on strategic planning, cost management, and resource allocation.